Chris Mason | 6cbd557 | 2007-06-12 09:07:21 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 Oracle. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public |
| 6 | * License v2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 | * General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public |
| 14 | * License along with this program; if not, write to the |
| 15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 16 | * Boston, MA 021110-1307, USA. |
| 17 | */ |
| 18 | |
Chris Mason | dc17ff8 | 2008-01-08 15:46:30 -0500 | [diff] [blame] | 19 | #ifndef __BTRFS_CTREE__ |
| 20 | #define __BTRFS_CTREE__ |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 21 | |
Chris Mason | 810191f | 2007-10-15 16:18:55 -0400 | [diff] [blame] | 22 | #include <linux/mm.h> |
| 23 | #include <linux/highmem.h> |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 24 | #include <linux/fs.h> |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 25 | #include <linux/rwsem.h> |
Stefan Behrens | 803b2f5 | 2013-08-15 17:11:21 +0200 | [diff] [blame] | 26 | #include <linux/semaphore.h> |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 27 | #include <linux/completion.h> |
Chris Mason | 0416008 | 2008-03-26 10:28:07 -0400 | [diff] [blame] | 28 | #include <linux/backing-dev.h> |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 29 | #include <linux/wait.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 30 | #include <linux/slab.h> |
Stefan Schmidt | f8b1808 | 2011-01-12 10:30:42 +0100 | [diff] [blame] | 31 | #include <linux/kobject.h> |
liubo | 1abe9b8 | 2011-03-24 11:18:59 +0000 | [diff] [blame] | 32 | #include <trace/events/btrfs.h> |
Chris Mason | 479965d | 2007-10-15 16:14:27 -0400 | [diff] [blame] | 33 | #include <asm/kmap_types.h> |
Josef Bacik | 3b16a4e | 2011-09-21 15:05:58 -0400 | [diff] [blame] | 34 | #include <linux/pagemap.h> |
Filipe Brandenburger | 55e301f | 2013-01-29 06:04:50 +0000 | [diff] [blame] | 35 | #include <linux/btrfs.h> |
Miao Xie | 21c7e75 | 2014-05-13 17:29:04 -0700 | [diff] [blame] | 36 | #include <linux/workqueue.h> |
Qu Wenruo | f667aef | 2014-09-23 13:40:08 +0800 | [diff] [blame] | 37 | #include <linux/security.h> |
Chris Mason | d1310b2 | 2008-01-24 16:13:08 -0500 | [diff] [blame] | 38 | #include "extent_io.h" |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 39 | #include "extent_map.h" |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 40 | #include "async-thread.h" |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 41 | |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 42 | struct btrfs_trans_handle; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 43 | struct btrfs_transaction; |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 44 | struct btrfs_pending_snapshot; |
Chris Mason | 35b7e47 | 2007-05-02 15:53:43 -0400 | [diff] [blame] | 45 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
| 46 | extern struct kmem_cache *btrfs_transaction_cachep; |
| 47 | extern struct kmem_cache *btrfs_bit_radix_cachep; |
Chris Mason | 2c90e5d | 2007-04-02 10:50:19 -0400 | [diff] [blame] | 48 | extern struct kmem_cache *btrfs_path_cachep; |
Josef Bacik | dc89e98 | 2011-01-28 17:05:48 -0500 | [diff] [blame] | 49 | extern struct kmem_cache *btrfs_free_space_cachep; |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 50 | struct btrfs_ordered_sum; |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 51 | |
Josef Bacik | 294e30f | 2013-10-09 12:00:56 -0400 | [diff] [blame] | 52 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
| 53 | #define STATIC noinline |
| 54 | #else |
| 55 | #define STATIC static noinline |
| 56 | #endif |
| 57 | |
Zach Brown | cdb4c57 | 2013-02-20 00:55:13 +0000 | [diff] [blame] | 58 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 59 | |
Stefan Behrens | 72d7aef | 2012-11-06 14:57:46 +0100 | [diff] [blame] | 60 | #define BTRFS_MAX_MIRRORS 3 |
Stefan Behrens | 94598ba | 2012-03-27 14:21:26 -0400 | [diff] [blame] | 61 | |
Chris Mason | 4008c04 | 2009-02-12 14:09:45 -0500 | [diff] [blame] | 62 | #define BTRFS_MAX_LEVEL 8 |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 63 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 64 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
| 65 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 66 | /* holds pointers to all of the tree roots */ |
Chris Mason | 6407bf6 | 2007-03-27 06:33:00 -0400 | [diff] [blame] | 67 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 68 | |
| 69 | /* stores information about which extents are in use, and reference counts */ |
Chris Mason | 0cf6c62 | 2007-06-09 09:22:25 -0400 | [diff] [blame] | 70 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 71 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 72 | /* |
| 73 | * chunk tree stores translations from logical -> physical block numbering |
| 74 | * the super block points to the chunk tree |
| 75 | */ |
Chris Mason | e085def | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 76 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 77 | |
| 78 | /* |
| 79 | * stores information about which areas of a given device are in use. |
| 80 | * one per device. The tree of tree roots points to the device tree |
| 81 | */ |
Chris Mason | e085def | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 82 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
| 83 | |
| 84 | /* one per subvolume, storing files and directories */ |
| 85 | #define BTRFS_FS_TREE_OBJECTID 5ULL |
| 86 | |
| 87 | /* directory objectid inside the root tree */ |
| 88 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 89 | |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 90 | /* holds checksums of all the data extents */ |
| 91 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL |
| 92 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 93 | /* holds quota configuration and tracking */ |
| 94 | #define BTRFS_QUOTA_TREE_OBJECTID 8ULL |
| 95 | |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 96 | /* for storing items that use the BTRFS_UUID_KEY* types */ |
| 97 | #define BTRFS_UUID_TREE_OBJECTID 9ULL |
| 98 | |
David Sterba | 60b6297 | 2013-04-30 17:29:29 +0000 | [diff] [blame] | 99 | /* for storing balance parameters in the root tree */ |
| 100 | #define BTRFS_BALANCE_OBJECTID -4ULL |
| 101 | |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 102 | /* orhpan objectid for tracking unlinked/truncated files */ |
| 103 | #define BTRFS_ORPHAN_OBJECTID -5ULL |
| 104 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 105 | /* does write ahead logging to speed up fsyncs */ |
| 106 | #define BTRFS_TREE_LOG_OBJECTID -6ULL |
| 107 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL |
| 108 | |
Zheng Yan | e465768 | 2008-09-26 10:04:53 -0400 | [diff] [blame] | 109 | /* for space balancing */ |
| 110 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL |
| 111 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL |
| 112 | |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 113 | /* |
| 114 | * extent checksums all have this objectid |
| 115 | * this allows them to share the logging tree |
| 116 | * for fsyncs |
| 117 | */ |
| 118 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL |
| 119 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 120 | /* For storing free space cache */ |
| 121 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL |
| 122 | |
Li Zefan | 82d5902 | 2011-04-20 10:33:24 +0800 | [diff] [blame] | 123 | /* |
Wang Sheng-Hui | 527a136 | 2012-09-06 13:33:37 +0800 | [diff] [blame] | 124 | * The inode number assigned to the special inode for storing |
Li Zefan | 82d5902 | 2011-04-20 10:33:24 +0800 | [diff] [blame] | 125 | * free ino cache |
| 126 | */ |
| 127 | #define BTRFS_FREE_INO_OBJECTID -12ULL |
| 128 | |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 129 | /* dummy objectid represents multiple objectids */ |
| 130 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL |
| 131 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 132 | /* |
Zheng Yan | 6527cdb | 2008-09-05 16:43:53 -0400 | [diff] [blame] | 133 | * All files have objectids in this range. |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 134 | */ |
Chris Mason | f6dbff5 | 2007-12-13 11:13:32 -0500 | [diff] [blame] | 135 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
Zheng Yan | 6527cdb | 2008-09-05 16:43:53 -0400 | [diff] [blame] | 136 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 137 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
Chris Mason | 3768f36 | 2007-03-13 16:47:54 -0400 | [diff] [blame] | 138 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 139 | |
| 140 | /* |
| 141 | * the device items go into the chunk tree. The key is in the form |
| 142 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] |
| 143 | */ |
| 144 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL |
| 145 | |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 146 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
| 147 | |
| 148 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 |
| 149 | |
Geert Uytterhoeven | 6e71c47 | 2013-08-20 13:20:08 +0200 | [diff] [blame] | 150 | #define BTRFS_DEV_REPLACE_DEVID 0ULL |
Stefan Behrens | e93c89c | 2012-11-05 17:33:06 +0100 | [diff] [blame] | 151 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 152 | /* |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 153 | * the max metadata block size. This limit is somewhat artificial, |
| 154 | * but the memmove costs go through the roof for larger blocks. |
| 155 | */ |
| 156 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 |
| 157 | |
| 158 | /* |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 159 | * we can actually store much bigger names, but lets not confuse the rest |
| 160 | * of linux |
| 161 | */ |
| 162 | #define BTRFS_NAME_LEN 255 |
| 163 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 164 | /* |
| 165 | * Theoretical limit is larger, but we keep this down to a sane |
| 166 | * value. That should limit greatly the possibility of collisions on |
| 167 | * inode ref items. |
| 168 | */ |
| 169 | #define BTRFS_LINK_MAX 65535U |
| 170 | |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 171 | /* 32 bytes in various csum fields */ |
| 172 | #define BTRFS_CSUM_SIZE 32 |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 173 | |
| 174 | /* csum types */ |
| 175 | #define BTRFS_CSUM_TYPE_CRC32 0 |
| 176 | |
Qu Wenruo | 1f6e4b3 | 2015-05-05 10:53:15 +0800 | [diff] [blame] | 177 | static int btrfs_csum_sizes[] = { 4 }; |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 178 | |
Chris Mason | 509659c | 2007-05-10 12:36:17 -0400 | [diff] [blame] | 179 | /* four bytes for CRC32 */ |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 180 | #define BTRFS_EMPTY_DIR_SIZE 0 |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 181 | |
Stefan Behrens | 29a8d9a | 2012-11-06 14:16:24 +0100 | [diff] [blame] | 182 | /* spefic to btrfs_map_block(), therefore not in include/linux/blk_types.h */ |
| 183 | #define REQ_GET_READ_MIRRORS (1 << 30) |
| 184 | |
Chris Mason | fabb568 | 2007-06-07 22:13:21 -0400 | [diff] [blame] | 185 | #define BTRFS_FT_UNKNOWN 0 |
| 186 | #define BTRFS_FT_REG_FILE 1 |
| 187 | #define BTRFS_FT_DIR 2 |
| 188 | #define BTRFS_FT_CHRDEV 3 |
| 189 | #define BTRFS_FT_BLKDEV 4 |
| 190 | #define BTRFS_FT_FIFO 5 |
| 191 | #define BTRFS_FT_SOCK 6 |
| 192 | #define BTRFS_FT_SYMLINK 7 |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 193 | #define BTRFS_FT_XATTR 8 |
| 194 | #define BTRFS_FT_MAX 9 |
Chris Mason | fabb568 | 2007-06-07 22:13:21 -0400 | [diff] [blame] | 195 | |
Stefan Behrens | 3d136a1 | 2012-02-03 11:20:04 +0100 | [diff] [blame] | 196 | /* ioprio of readahead is set to idle */ |
| 197 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) |
| 198 | |
Miao Xie | e2d8452 | 2013-01-29 10:09:20 +0000 | [diff] [blame] | 199 | #define BTRFS_DIRTY_METADATA_THRESH (32 * 1024 * 1024) |
| 200 | |
Josef Bacik | dcab6a3 | 2015-02-11 15:08:59 -0500 | [diff] [blame] | 201 | #define BTRFS_MAX_EXTENT_SIZE (128 * 1024 * 1024) |
| 202 | |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 203 | /* |
Wu Fengguang | d4a7894 | 2009-04-02 16:46:06 -0400 | [diff] [blame] | 204 | * The key defines the order in the tree, and so it also defines (optimal) |
| 205 | * block layout. |
| 206 | * |
| 207 | * objectid corresponds to the inode number. |
| 208 | * |
| 209 | * type tells us things about the object, and is a kind of stream selector. |
| 210 | * so for a given inode, keys with type of 1 might refer to the inode data, |
| 211 | * type of 2 may point to file data in the btree and type == 3 may point to |
| 212 | * extents. |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 213 | * |
| 214 | * offset is the starting byte offset for this key in the stream. |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 215 | * |
| 216 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always |
| 217 | * in cpu native order. Otherwise they are identical and their sizes |
| 218 | * should be the same (ie both packed) |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 219 | */ |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 220 | struct btrfs_disk_key { |
| 221 | __le64 objectid; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 222 | u8 type; |
Chris Mason | 70b2bef | 2007-04-17 15:39:32 -0400 | [diff] [blame] | 223 | __le64 offset; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 224 | } __attribute__ ((__packed__)); |
| 225 | |
| 226 | struct btrfs_key { |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 227 | u64 objectid; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 228 | u8 type; |
Chris Mason | 70b2bef | 2007-04-17 15:39:32 -0400 | [diff] [blame] | 229 | u64 offset; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 230 | } __attribute__ ((__packed__)); |
| 231 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 232 | struct btrfs_mapping_tree { |
| 233 | struct extent_map_tree map_tree; |
| 234 | }; |
| 235 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 236 | struct btrfs_dev_item { |
| 237 | /* the internal btrfs device id */ |
| 238 | __le64 devid; |
| 239 | |
| 240 | /* size of the device */ |
| 241 | __le64 total_bytes; |
| 242 | |
| 243 | /* bytes used */ |
| 244 | __le64 bytes_used; |
| 245 | |
| 246 | /* optimal io alignment for this device */ |
| 247 | __le32 io_align; |
| 248 | |
| 249 | /* optimal io width for this device */ |
| 250 | __le32 io_width; |
| 251 | |
| 252 | /* minimal io size for this device */ |
| 253 | __le32 sector_size; |
| 254 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 255 | /* type and info about this device */ |
| 256 | __le64 type; |
| 257 | |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 258 | /* expected generation for this device */ |
| 259 | __le64 generation; |
| 260 | |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 261 | /* |
| 262 | * starting byte of this partition on the device, |
Wu Fengguang | d4a7894 | 2009-04-02 16:46:06 -0400 | [diff] [blame] | 263 | * to allow for stripe alignment in the future |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 264 | */ |
| 265 | __le64 start_offset; |
| 266 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 267 | /* grouping information for allocation decisions */ |
| 268 | __le32 dev_group; |
| 269 | |
| 270 | /* seek speed 0-100 where 100 is fastest */ |
| 271 | u8 seek_speed; |
| 272 | |
| 273 | /* bandwidth 0-100 where 100 is fastest */ |
| 274 | u8 bandwidth; |
| 275 | |
Chris Mason | 0d81ba5 | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 276 | /* btrfs generated uuid for this device */ |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 277 | u8 uuid[BTRFS_UUID_SIZE]; |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 278 | |
| 279 | /* uuid of FS who owns this device */ |
| 280 | u8 fsid[BTRFS_UUID_SIZE]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 281 | } __attribute__ ((__packed__)); |
| 282 | |
| 283 | struct btrfs_stripe { |
| 284 | __le64 devid; |
| 285 | __le64 offset; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 286 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 287 | } __attribute__ ((__packed__)); |
| 288 | |
| 289 | struct btrfs_chunk { |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 290 | /* size of this chunk in bytes */ |
| 291 | __le64 length; |
| 292 | |
| 293 | /* objectid of the root referencing this chunk */ |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 294 | __le64 owner; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 295 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 296 | __le64 stripe_len; |
| 297 | __le64 type; |
| 298 | |
| 299 | /* optimal io alignment for this chunk */ |
| 300 | __le32 io_align; |
| 301 | |
| 302 | /* optimal io width for this chunk */ |
| 303 | __le32 io_width; |
| 304 | |
| 305 | /* minimal io size for this chunk */ |
| 306 | __le32 sector_size; |
| 307 | |
| 308 | /* 2^16 stripes is quite a lot, a second limit is the size of a single |
| 309 | * item in the btree |
| 310 | */ |
| 311 | __le16 num_stripes; |
Chris Mason | 321aecc | 2008-04-16 10:49:51 -0400 | [diff] [blame] | 312 | |
| 313 | /* sub stripes only matter for raid10 */ |
| 314 | __le16 sub_stripes; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 315 | struct btrfs_stripe stripe; |
| 316 | /* additional stripes go here */ |
| 317 | } __attribute__ ((__packed__)); |
| 318 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 319 | #define BTRFS_FREE_SPACE_EXTENT 1 |
| 320 | #define BTRFS_FREE_SPACE_BITMAP 2 |
| 321 | |
| 322 | struct btrfs_free_space_entry { |
| 323 | __le64 offset; |
| 324 | __le64 bytes; |
| 325 | u8 type; |
| 326 | } __attribute__ ((__packed__)); |
| 327 | |
| 328 | struct btrfs_free_space_header { |
| 329 | struct btrfs_disk_key location; |
| 330 | __le64 generation; |
| 331 | __le64 num_entries; |
| 332 | __le64 num_bitmaps; |
| 333 | } __attribute__ ((__packed__)); |
| 334 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 335 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
| 336 | { |
| 337 | BUG_ON(num_stripes == 0); |
| 338 | return sizeof(struct btrfs_chunk) + |
| 339 | sizeof(struct btrfs_stripe) * (num_stripes - 1); |
| 340 | } |
| 341 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 342 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
| 343 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 344 | |
| 345 | /* |
| 346 | * File system states |
| 347 | */ |
Miao Xie | 87533c4 | 2013-01-29 10:14:48 +0000 | [diff] [blame] | 348 | #define BTRFS_FS_STATE_ERROR 0 |
Miao Xie | dc81cdc | 2013-02-20 23:32:52 -0700 | [diff] [blame] | 349 | #define BTRFS_FS_STATE_REMOUNTING 1 |
David Sterba | 0874881 | 2013-03-12 14:46:08 +0000 | [diff] [blame] | 350 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
Miao Xie | c404e0d | 2014-01-30 16:46:55 +0800 | [diff] [blame] | 351 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 352 | |
Miao Xie | 87533c4 | 2013-01-29 10:14:48 +0000 | [diff] [blame] | 353 | /* Super block flags */ |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 354 | /* Errors detected */ |
| 355 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) |
| 356 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 357 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
| 358 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) |
| 359 | |
| 360 | #define BTRFS_BACKREF_REV_MAX 256 |
| 361 | #define BTRFS_BACKREF_REV_SHIFT 56 |
| 362 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ |
| 363 | BTRFS_BACKREF_REV_SHIFT) |
| 364 | |
| 365 | #define BTRFS_OLD_BACKREF_REV 0 |
| 366 | #define BTRFS_MIXED_BACKREF_REV 1 |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 367 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 368 | /* |
| 369 | * every tree block (leaf or node) starts with this header. |
| 370 | */ |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 371 | struct btrfs_header { |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 372 | /* these first four must match the super block */ |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 373 | u8 csum[BTRFS_CSUM_SIZE]; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 374 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 375 | __le64 bytenr; /* which block this node is supposed to live in */ |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 376 | __le64 flags; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 377 | |
| 378 | /* allowed to be different from the super from here on down */ |
| 379 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 380 | __le64 generation; |
Chris Mason | 4d77567 | 2007-04-20 20:23:12 -0400 | [diff] [blame] | 381 | __le64 owner; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 382 | __le32 nritems; |
Chris Mason | 9a6f11e | 2007-03-27 09:06:38 -0400 | [diff] [blame] | 383 | u8 level; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 384 | } __attribute__ ((__packed__)); |
| 385 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 386 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 387 | sizeof(struct btrfs_header)) / \ |
| 388 | sizeof(struct btrfs_key_ptr)) |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 389 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
David Sterba | 707e8a0 | 2014-06-04 19:22:26 +0200 | [diff] [blame] | 390 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->nodesize)) |
David Sterba | 7ec20af | 2014-07-24 17:34:58 +0200 | [diff] [blame] | 391 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ |
| 392 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 393 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
| 394 | sizeof(struct btrfs_item) - \ |
David Sterba | 7ec20af | 2014-07-24 17:34:58 +0200 | [diff] [blame] | 395 | BTRFS_FILE_EXTENT_INLINE_DATA_START) |
Yan, Zheng | f34f57a | 2009-11-12 09:35:27 +0000 | [diff] [blame] | 396 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
| 397 | sizeof(struct btrfs_item) -\ |
| 398 | sizeof(struct btrfs_dir_item)) |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 399 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 400 | |
| 401 | /* |
| 402 | * this is a very generous portion of the super block, giving us |
| 403 | * room to translate 14 chunks with 3 stripes each. |
| 404 | */ |
| 405 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 |
Chris Mason | 7ae9c09 | 2008-04-18 10:29:49 -0400 | [diff] [blame] | 406 | #define BTRFS_LABEL_SIZE 256 |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 407 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 408 | /* |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 409 | * just in case we somehow lose the roots and are not able to mount, |
| 410 | * we store an array of the roots from previous transactions |
| 411 | * in the super. |
| 412 | */ |
| 413 | #define BTRFS_NUM_BACKUP_ROOTS 4 |
| 414 | struct btrfs_root_backup { |
| 415 | __le64 tree_root; |
| 416 | __le64 tree_root_gen; |
| 417 | |
| 418 | __le64 chunk_root; |
| 419 | __le64 chunk_root_gen; |
| 420 | |
| 421 | __le64 extent_root; |
| 422 | __le64 extent_root_gen; |
| 423 | |
| 424 | __le64 fs_root; |
| 425 | __le64 fs_root_gen; |
| 426 | |
| 427 | __le64 dev_root; |
| 428 | __le64 dev_root_gen; |
| 429 | |
| 430 | __le64 csum_root; |
| 431 | __le64 csum_root_gen; |
| 432 | |
| 433 | __le64 total_bytes; |
| 434 | __le64 bytes_used; |
| 435 | __le64 num_devices; |
| 436 | /* future */ |
Masanari Iida | d142324 | 2012-10-31 15:16:32 +0000 | [diff] [blame] | 437 | __le64 unused_64[4]; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 438 | |
| 439 | u8 tree_root_level; |
| 440 | u8 chunk_root_level; |
| 441 | u8 extent_root_level; |
| 442 | u8 fs_root_level; |
| 443 | u8 dev_root_level; |
| 444 | u8 csum_root_level; |
| 445 | /* future and to align */ |
| 446 | u8 unused_8[10]; |
| 447 | } __attribute__ ((__packed__)); |
| 448 | |
| 449 | /* |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 450 | * the super block basically lists the main trees of the FS |
| 451 | * it currently lacks any block count etc etc |
| 452 | */ |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 453 | struct btrfs_super_block { |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 454 | u8 csum[BTRFS_CSUM_SIZE]; |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 455 | /* the first 4 fields must match struct btrfs_header */ |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 456 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 457 | __le64 bytenr; /* this block number */ |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 458 | __le64 flags; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 459 | |
| 460 | /* allowed to be different from the btrfs_header from here own down */ |
Chris Mason | 3768f36 | 2007-03-13 16:47:54 -0400 | [diff] [blame] | 461 | __le64 magic; |
Chris Mason | 3768f36 | 2007-03-13 16:47:54 -0400 | [diff] [blame] | 462 | __le64 generation; |
| 463 | __le64 root; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 464 | __le64 chunk_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 465 | __le64 log_root; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 466 | |
| 467 | /* this will help find the new super based on the log root */ |
| 468 | __le64 log_root_transid; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 469 | __le64 total_bytes; |
| 470 | __le64 bytes_used; |
Chris Mason | 2e635a2 | 2007-03-21 11:12:56 -0400 | [diff] [blame] | 471 | __le64 root_dir_objectid; |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 472 | __le64 num_devices; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 473 | __le32 sectorsize; |
| 474 | __le32 nodesize; |
David Sterba | 707e8a0 | 2014-06-04 19:22:26 +0200 | [diff] [blame] | 475 | __le32 __unused_leafsize; |
Chris Mason | 87ee04e | 2007-11-30 11:30:34 -0500 | [diff] [blame] | 476 | __le32 stripesize; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 477 | __le32 sys_chunk_array_size; |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 478 | __le64 chunk_root_generation; |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 479 | __le64 compat_flags; |
| 480 | __le64 compat_ro_flags; |
| 481 | __le64 incompat_flags; |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 482 | __le16 csum_type; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 483 | u8 root_level; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 484 | u8 chunk_root_level; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 485 | u8 log_root_level; |
Chris Mason | 0d81ba5 | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 486 | struct btrfs_dev_item dev_item; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 487 | |
Chris Mason | 7ae9c09 | 2008-04-18 10:29:49 -0400 | [diff] [blame] | 488 | char label[BTRFS_LABEL_SIZE]; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 489 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 490 | __le64 cache_generation; |
Stefan Behrens | 2643279 | 2013-08-15 17:11:22 +0200 | [diff] [blame] | 491 | __le64 uuid_tree_generation; |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 492 | |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 493 | /* future expansion */ |
Stefan Behrens | 2643279 | 2013-08-15 17:11:22 +0200 | [diff] [blame] | 494 | __le64 reserved[30]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 495 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 496 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
Chris Mason | cfaa729 | 2007-02-21 17:04:57 -0500 | [diff] [blame] | 497 | } __attribute__ ((__packed__)); |
| 498 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 499 | /* |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 500 | * Compat flags that we support. If any incompat flags are set other than the |
| 501 | * ones specified below then we will fail to mount |
| 502 | */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 503 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 504 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
Josef Bacik | 6737773 | 2010-09-16 16:19:09 -0400 | [diff] [blame] | 505 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
Li Zefan | a6fa6fa | 2010-10-25 15:12:26 +0800 | [diff] [blame] | 506 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 507 | /* |
| 508 | * some patches floated around with a second compression method |
| 509 | * lets save that incompat here for when they do get in |
| 510 | * Note we don't actually support it, we're just reserving the |
| 511 | * number |
| 512 | */ |
| 513 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) |
| 514 | |
| 515 | /* |
| 516 | * older kernels tried to do bigger metadata blocks, but the |
| 517 | * code was pretty buggy. Lets not let them try anymore. |
| 518 | */ |
| 519 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 520 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 521 | #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 522 | #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 523 | #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) |
Josef Bacik | 16e7549 | 2013-10-22 12:18:51 -0400 | [diff] [blame] | 524 | #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 525 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 526 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
Jeff Mahoney | 2eaa055 | 2013-11-15 15:33:55 -0500 | [diff] [blame] | 527 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
| 528 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 529 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL |
Jeff Mahoney | 2eaa055 | 2013-11-15 15:33:55 -0500 | [diff] [blame] | 530 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
| 531 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL |
| 532 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 533 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
| 534 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ |
Josef Bacik | 6737773 | 2010-09-16 16:19:09 -0400 | [diff] [blame] | 535 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
Li Zefan | a6fa6fa | 2010-10-25 15:12:26 +0800 | [diff] [blame] | 536 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 537 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 538 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 539 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 540 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
Josef Bacik | 16e7549 | 2013-10-22 12:18:51 -0400 | [diff] [blame] | 541 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
| 542 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 543 | |
Jeff Mahoney | 2eaa055 | 2013-11-15 15:33:55 -0500 | [diff] [blame] | 544 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
| 545 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) |
| 546 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 547 | |
| 548 | /* |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 549 | * A leaf is full of items. offset and size tell us where to find |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 550 | * the item in the leaf (relative to the start of the data area) |
| 551 | */ |
Chris Mason | 0783fcf | 2007-03-12 20:12:07 -0400 | [diff] [blame] | 552 | struct btrfs_item { |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 553 | struct btrfs_disk_key key; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 554 | __le32 offset; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 555 | __le32 size; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 556 | } __attribute__ ((__packed__)); |
| 557 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 558 | /* |
| 559 | * leaves have an item area and a data area: |
| 560 | * [item0, item1....itemN] [free space] [dataN...data1, data0] |
| 561 | * |
| 562 | * The data is separate from the items to get the keys closer together |
| 563 | * during searches. |
| 564 | */ |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 565 | struct btrfs_leaf { |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 566 | struct btrfs_header header; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 567 | struct btrfs_item items[]; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 568 | } __attribute__ ((__packed__)); |
| 569 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 570 | /* |
| 571 | * all non-leaf blocks are nodes, they hold only keys and pointers to |
| 572 | * other blocks |
| 573 | */ |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 574 | struct btrfs_key_ptr { |
| 575 | struct btrfs_disk_key key; |
| 576 | __le64 blockptr; |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 577 | __le64 generation; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 578 | } __attribute__ ((__packed__)); |
| 579 | |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 580 | struct btrfs_node { |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 581 | struct btrfs_header header; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 582 | struct btrfs_key_ptr ptrs[]; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 583 | } __attribute__ ((__packed__)); |
| 584 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 585 | /* |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 586 | * btrfs_paths remember the path taken from the root down to the leaf. |
| 587 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 588 | * to any other levels that are present. |
| 589 | * |
| 590 | * The slots array records the index of the item or block pointer |
| 591 | * used while walking the tree. |
| 592 | */ |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 593 | struct btrfs_path { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 594 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 595 | int slots[BTRFS_MAX_LEVEL]; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 596 | /* if there is real range locking, this locks field will change */ |
| 597 | int locks[BTRFS_MAX_LEVEL]; |
Chris Mason | 3c69fae | 2007-08-07 15:52:22 -0400 | [diff] [blame] | 598 | int reada; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 599 | /* keep some upper locks as we walk down */ |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 600 | int lowest_level; |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 601 | |
| 602 | /* |
| 603 | * set by btrfs_split_item, tells search_slot to keep all locks |
| 604 | * and to force calls to keep space in the nodes |
| 605 | */ |
Chris Mason | b947343 | 2009-03-13 11:00:37 -0400 | [diff] [blame] | 606 | unsigned int search_for_split:1; |
| 607 | unsigned int keep_locks:1; |
| 608 | unsigned int skip_locking:1; |
| 609 | unsigned int leave_spinning:1; |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 610 | unsigned int search_commit_root:1; |
Josef Bacik | 3f8a18c | 2014-03-28 17:16:01 -0400 | [diff] [blame] | 611 | unsigned int need_commit_sem:1; |
Filipe Manana | 5f5bc6b | 2014-11-09 08:38:39 +0000 | [diff] [blame] | 612 | unsigned int skip_release_on_error:1; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 613 | }; |
Chris Mason | 5de08d7 | 2007-02-24 06:24:44 -0500 | [diff] [blame] | 614 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 615 | /* |
| 616 | * items in the extent btree are used to record the objectid of the |
| 617 | * owner of the block and the number of references |
| 618 | */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 619 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 620 | struct btrfs_extent_item { |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 621 | __le64 refs; |
| 622 | __le64 generation; |
| 623 | __le64 flags; |
| 624 | } __attribute__ ((__packed__)); |
| 625 | |
| 626 | struct btrfs_extent_item_v0 { |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 627 | __le32 refs; |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 628 | } __attribute__ ((__packed__)); |
| 629 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 630 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
| 631 | sizeof(struct btrfs_item)) |
| 632 | |
| 633 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) |
| 634 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) |
| 635 | |
| 636 | /* following flags only apply to tree blocks */ |
| 637 | |
| 638 | /* use full backrefs for extent pointers in the block */ |
| 639 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) |
| 640 | |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 641 | /* |
| 642 | * this flag is only used internally by scrub and may be changed at any time |
| 643 | * it is only declared here to avoid collisions |
| 644 | */ |
| 645 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) |
| 646 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 647 | struct btrfs_tree_block_info { |
| 648 | struct btrfs_disk_key key; |
| 649 | u8 level; |
| 650 | } __attribute__ ((__packed__)); |
| 651 | |
| 652 | struct btrfs_extent_data_ref { |
| 653 | __le64 root; |
| 654 | __le64 objectid; |
| 655 | __le64 offset; |
| 656 | __le32 count; |
| 657 | } __attribute__ ((__packed__)); |
| 658 | |
| 659 | struct btrfs_shared_data_ref { |
| 660 | __le32 count; |
| 661 | } __attribute__ ((__packed__)); |
| 662 | |
| 663 | struct btrfs_extent_inline_ref { |
| 664 | u8 type; |
Yan Zheng | 1bec1ae | 2009-07-22 09:59:00 -0400 | [diff] [blame] | 665 | __le64 offset; |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 666 | } __attribute__ ((__packed__)); |
| 667 | |
| 668 | /* old style backrefs item */ |
| 669 | struct btrfs_extent_ref_v0 { |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 670 | __le64 root; |
| 671 | __le64 generation; |
| 672 | __le64 objectid; |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 673 | __le32 count; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 674 | } __attribute__ ((__packed__)); |
| 675 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 676 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 677 | /* dev extents record free space on individual devices. The owner |
| 678 | * field points back to the chunk allocation mapping tree that allocated |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 679 | * the extent. The chunk tree uuid field is a way to double check the owner |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 680 | */ |
| 681 | struct btrfs_dev_extent { |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 682 | __le64 chunk_tree; |
| 683 | __le64 chunk_objectid; |
| 684 | __le64 chunk_offset; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 685 | __le64 length; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 686 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 687 | } __attribute__ ((__packed__)); |
| 688 | |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 689 | struct btrfs_inode_ref { |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 690 | __le64 index; |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 691 | __le16 name_len; |
| 692 | /* name goes here */ |
| 693 | } __attribute__ ((__packed__)); |
| 694 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 695 | struct btrfs_inode_extref { |
| 696 | __le64 parent_objectid; |
| 697 | __le64 index; |
| 698 | __le16 name_len; |
| 699 | __u8 name[0]; |
| 700 | /* name goes here */ |
| 701 | } __attribute__ ((__packed__)); |
| 702 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 703 | struct btrfs_timespec { |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 704 | __le64 sec; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 705 | __le32 nsec; |
| 706 | } __attribute__ ((__packed__)); |
| 707 | |
Jan Engelhardt | 95029d7 | 2009-01-21 10:49:16 -0500 | [diff] [blame] | 708 | enum btrfs_compression_type { |
Li Zefan | 261507a0 | 2010-12-17 14:21:50 +0800 | [diff] [blame] | 709 | BTRFS_COMPRESS_NONE = 0, |
| 710 | BTRFS_COMPRESS_ZLIB = 1, |
Li Zefan | a6fa6fa | 2010-10-25 15:12:26 +0800 | [diff] [blame] | 711 | BTRFS_COMPRESS_LZO = 2, |
| 712 | BTRFS_COMPRESS_TYPES = 2, |
| 713 | BTRFS_COMPRESS_LAST = 3, |
Jan Engelhardt | 95029d7 | 2009-01-21 10:49:16 -0500 | [diff] [blame] | 714 | }; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 715 | |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 716 | struct btrfs_inode_item { |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 717 | /* nfs style generation number */ |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 718 | __le64 generation; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 719 | /* transid that last touched this inode */ |
| 720 | __le64 transid; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 721 | __le64 size; |
Yan Zheng | a76a3cd | 2008-10-09 11:46:29 -0400 | [diff] [blame] | 722 | __le64 nbytes; |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 723 | __le64 block_group; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 724 | __le32 nlink; |
| 725 | __le32 uid; |
| 726 | __le32 gid; |
| 727 | __le32 mode; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 728 | __le64 rdev; |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 729 | __le64 flags; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 730 | |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 731 | /* modification sequence number for NFS */ |
| 732 | __le64 sequence; |
| 733 | |
| 734 | /* |
| 735 | * a little future expansion, for more than this we can |
| 736 | * just grow the inode item and version it |
| 737 | */ |
| 738 | __le64 reserved[4]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 739 | struct btrfs_timespec atime; |
| 740 | struct btrfs_timespec ctime; |
| 741 | struct btrfs_timespec mtime; |
| 742 | struct btrfs_timespec otime; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 743 | } __attribute__ ((__packed__)); |
| 744 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 745 | struct btrfs_dir_log_item { |
| 746 | __le64 end; |
| 747 | } __attribute__ ((__packed__)); |
| 748 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 749 | struct btrfs_dir_item { |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 750 | struct btrfs_disk_key location; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 751 | __le64 transid; |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 752 | __le16 data_len; |
Chris Mason | a8a2ee0 | 2007-03-16 08:46:49 -0400 | [diff] [blame] | 753 | __le16 name_len; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 754 | u8 type; |
| 755 | } __attribute__ ((__packed__)); |
| 756 | |
Li Zefan | b83cc96 | 2010-12-20 16:04:08 +0800 | [diff] [blame] | 757 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
| 758 | |
David Sterba | 521e054 | 2014-04-15 16:41:44 +0200 | [diff] [blame] | 759 | /* |
| 760 | * Internal in-memory flag that a subvolume has been marked for deletion but |
| 761 | * still visible as a directory |
| 762 | */ |
| 763 | #define BTRFS_ROOT_SUBVOL_DEAD (1ULL << 48) |
| 764 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 765 | struct btrfs_root_item { |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 766 | struct btrfs_inode_item inode; |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 767 | __le64 generation; |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 768 | __le64 root_dirid; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 769 | __le64 bytenr; |
| 770 | __le64 byte_limit; |
| 771 | __le64 bytes_used; |
Yan Zheng | 80ff385 | 2008-10-30 14:20:02 -0400 | [diff] [blame] | 772 | __le64 last_snapshot; |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 773 | __le64 flags; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 774 | __le32 refs; |
Chris Mason | 5eda7b5 | 2007-06-22 14:16:25 -0400 | [diff] [blame] | 775 | struct btrfs_disk_key drop_progress; |
| 776 | u8 drop_level; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 777 | u8 level; |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 778 | |
| 779 | /* |
| 780 | * The following fields appear after subvol_uuids+subvol_times |
| 781 | * were introduced. |
| 782 | */ |
| 783 | |
| 784 | /* |
| 785 | * This generation number is used to test if the new fields are valid |
| 786 | * and up to date while reading the root item. Everytime the root item |
| 787 | * is written out, the "generation" field is copied into this field. If |
| 788 | * anyone ever mounted the fs with an older kernel, we will have |
| 789 | * mismatching generation values here and thus must invalidate the |
| 790 | * new fields. See btrfs_update_root and btrfs_find_last_root for |
| 791 | * details. |
| 792 | * the offset of generation_v2 is also used as the start for the memset |
| 793 | * when invalidating the fields. |
| 794 | */ |
| 795 | __le64 generation_v2; |
| 796 | u8 uuid[BTRFS_UUID_SIZE]; |
| 797 | u8 parent_uuid[BTRFS_UUID_SIZE]; |
| 798 | u8 received_uuid[BTRFS_UUID_SIZE]; |
| 799 | __le64 ctransid; /* updated when an inode changes */ |
| 800 | __le64 otransid; /* trans when created */ |
| 801 | __le64 stransid; /* trans when sent. non-zero for received subvol */ |
| 802 | __le64 rtransid; /* trans when received. non-zero for received subvol */ |
| 803 | struct btrfs_timespec ctime; |
| 804 | struct btrfs_timespec otime; |
| 805 | struct btrfs_timespec stime; |
| 806 | struct btrfs_timespec rtime; |
| 807 | __le64 reserved[8]; /* for future */ |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 808 | } __attribute__ ((__packed__)); |
| 809 | |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 810 | /* |
| 811 | * this is used for both forward and backward root refs |
| 812 | */ |
| 813 | struct btrfs_root_ref { |
| 814 | __le64 dirid; |
| 815 | __le64 sequence; |
| 816 | __le16 name_len; |
| 817 | } __attribute__ ((__packed__)); |
| 818 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 819 | struct btrfs_disk_balance_args { |
| 820 | /* |
| 821 | * profiles to operate on, single is denoted by |
| 822 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE |
| 823 | */ |
| 824 | __le64 profiles; |
| 825 | |
| 826 | /* usage filter */ |
| 827 | __le64 usage; |
| 828 | |
| 829 | /* devid filter */ |
| 830 | __le64 devid; |
| 831 | |
| 832 | /* devid subset filter [pstart..pend) */ |
| 833 | __le64 pstart; |
| 834 | __le64 pend; |
| 835 | |
| 836 | /* btrfs virtual address space subset filter [vstart..vend) */ |
| 837 | __le64 vstart; |
| 838 | __le64 vend; |
| 839 | |
| 840 | /* |
| 841 | * profile to convert to, single is denoted by |
| 842 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE |
| 843 | */ |
| 844 | __le64 target; |
| 845 | |
| 846 | /* BTRFS_BALANCE_ARGS_* */ |
| 847 | __le64 flags; |
| 848 | |
David Sterba | 7d824b6 | 2014-05-07 17:37:51 +0200 | [diff] [blame] | 849 | /* BTRFS_BALANCE_ARGS_LIMIT value */ |
| 850 | __le64 limit; |
| 851 | |
| 852 | __le64 unused[7]; |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 853 | } __attribute__ ((__packed__)); |
| 854 | |
| 855 | /* |
| 856 | * store balance parameters to disk so that balance can be properly |
| 857 | * resumed after crash or unmount |
| 858 | */ |
| 859 | struct btrfs_balance_item { |
| 860 | /* BTRFS_BALANCE_* */ |
| 861 | __le64 flags; |
| 862 | |
| 863 | struct btrfs_disk_balance_args data; |
| 864 | struct btrfs_disk_balance_args meta; |
| 865 | struct btrfs_disk_balance_args sys; |
| 866 | |
| 867 | __le64 unused[4]; |
| 868 | } __attribute__ ((__packed__)); |
| 869 | |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 870 | #define BTRFS_FILE_EXTENT_INLINE 0 |
| 871 | #define BTRFS_FILE_EXTENT_REG 1 |
| 872 | #define BTRFS_FILE_EXTENT_PREALLOC 2 |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 873 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 874 | struct btrfs_file_extent_item { |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 875 | /* |
| 876 | * transaction id that created this extent |
| 877 | */ |
Chris Mason | 71951f3 | 2007-03-27 09:16:29 -0400 | [diff] [blame] | 878 | __le64 generation; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 879 | /* |
| 880 | * max number of bytes to hold this extent in ram |
| 881 | * when we split a compressed extent we can't know how big |
| 882 | * each of the resulting pieces will be. So, this is |
| 883 | * an upper limit on the size of the extent in ram instead of |
| 884 | * an exact limit. |
| 885 | */ |
| 886 | __le64 ram_bytes; |
| 887 | |
| 888 | /* |
| 889 | * 32 bits for the various ways we might encode the data, |
| 890 | * including compression and encryption. If any of these |
| 891 | * are set to something a given disk format doesn't understand |
| 892 | * it is treated like an incompat flag for reading and writing, |
| 893 | * but not for stat. |
| 894 | */ |
| 895 | u8 compression; |
| 896 | u8 encryption; |
| 897 | __le16 other_encoding; /* spare for later use */ |
| 898 | |
| 899 | /* are we inline data or a real extent? */ |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 900 | u8 type; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 901 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 902 | /* |
| 903 | * disk space consumed by the extent, checksum blocks are included |
| 904 | * in these numbers |
David Sterba | 7ec20af | 2014-07-24 17:34:58 +0200 | [diff] [blame] | 905 | * |
| 906 | * At this offset in the structure, the inline extent data start. |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 907 | */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 908 | __le64 disk_bytenr; |
| 909 | __le64 disk_num_bytes; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 910 | /* |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 911 | * the logical offset in file blocks (no csums) |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 912 | * this extent record is for. This allows a file extent to point |
| 913 | * into the middle of an existing extent on disk, sharing it |
| 914 | * between two snapshots (useful if some bytes in the middle of the |
| 915 | * extent have changed |
| 916 | */ |
| 917 | __le64 offset; |
| 918 | /* |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 919 | * the logical number of file blocks (no csums included). This |
| 920 | * always reflects the size uncompressed and without encoding. |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 921 | */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 922 | __le64 num_bytes; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 923 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 924 | } __attribute__ ((__packed__)); |
| 925 | |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 926 | struct btrfs_csum_item { |
Chris Mason | 509659c | 2007-05-10 12:36:17 -0400 | [diff] [blame] | 927 | u8 csum; |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 928 | } __attribute__ ((__packed__)); |
| 929 | |
Stefan Behrens | 733f4fb | 2012-05-25 16:06:10 +0200 | [diff] [blame] | 930 | struct btrfs_dev_stats_item { |
| 931 | /* |
| 932 | * grow this item struct at the end for future enhancements and keep |
| 933 | * the existing values unchanged |
| 934 | */ |
| 935 | __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; |
| 936 | } __attribute__ ((__packed__)); |
| 937 | |
Stefan Behrens | e922e08 | 2012-11-05 17:26:40 +0100 | [diff] [blame] | 938 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 |
| 939 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 |
| 940 | #define BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED 0 |
| 941 | #define BTRFS_DEV_REPLACE_ITEM_STATE_STARTED 1 |
| 942 | #define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 2 |
| 943 | #define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 3 |
| 944 | #define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 4 |
| 945 | |
| 946 | struct btrfs_dev_replace { |
| 947 | u64 replace_state; /* see #define above */ |
| 948 | u64 time_started; /* seconds since 1-Jan-1970 */ |
| 949 | u64 time_stopped; /* seconds since 1-Jan-1970 */ |
| 950 | atomic64_t num_write_errors; |
| 951 | atomic64_t num_uncorrectable_read_errors; |
| 952 | |
| 953 | u64 cursor_left; |
| 954 | u64 committed_cursor_left; |
| 955 | u64 cursor_left_last_write_of_item; |
| 956 | u64 cursor_right; |
| 957 | |
| 958 | u64 cont_reading_from_srcdev_mode; /* see #define above */ |
| 959 | |
| 960 | int is_valid; |
| 961 | int item_needs_writeback; |
| 962 | struct btrfs_device *srcdev; |
| 963 | struct btrfs_device *tgtdev; |
| 964 | |
| 965 | pid_t lock_owner; |
| 966 | atomic_t nesting_level; |
| 967 | struct mutex lock_finishing_cancel_unmount; |
| 968 | struct mutex lock_management_lock; |
| 969 | struct mutex lock; |
| 970 | |
| 971 | struct btrfs_scrub_progress scrub_progress; |
| 972 | }; |
| 973 | |
Stefan Behrens | a2bff64 | 2012-11-05 17:32:20 +0100 | [diff] [blame] | 974 | struct btrfs_dev_replace_item { |
| 975 | /* |
| 976 | * grow this item struct at the end for future enhancements and keep |
| 977 | * the existing values unchanged |
| 978 | */ |
| 979 | __le64 src_devid; |
| 980 | __le64 cursor_left; |
| 981 | __le64 cursor_right; |
| 982 | __le64 cont_reading_from_srcdev_mode; |
| 983 | |
| 984 | __le64 replace_state; |
| 985 | __le64 time_started; |
| 986 | __le64 time_stopped; |
| 987 | __le64 num_write_errors; |
| 988 | __le64 num_uncorrectable_read_errors; |
| 989 | } __attribute__ ((__packed__)); |
| 990 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 991 | /* different types of block groups (and chunks) */ |
Ilya Dryomov | 52ba692 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 992 | #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) |
| 993 | #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) |
| 994 | #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) |
| 995 | #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) |
| 996 | #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) |
| 997 | #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) |
| 998 | #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) |
Andreas Philipp | 1c89cdd | 2013-05-11 11:12:54 +0000 | [diff] [blame] | 999 | #define BTRFS_BLOCK_GROUP_RAID5 (1ULL << 7) |
| 1000 | #define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8) |
David Sterba | 36523e95 | 2014-02-07 14:34:12 +0100 | [diff] [blame] | 1001 | #define BTRFS_BLOCK_GROUP_RESERVED (BTRFS_AVAIL_ALLOC_BIT_SINGLE | \ |
| 1002 | BTRFS_SPACE_INFO_GLOBAL_RSV) |
Miao Xie | e6ec716 | 2013-01-17 05:38:51 +0000 | [diff] [blame] | 1003 | |
| 1004 | enum btrfs_raid_types { |
| 1005 | BTRFS_RAID_RAID10, |
| 1006 | BTRFS_RAID_RAID1, |
| 1007 | BTRFS_RAID_DUP, |
| 1008 | BTRFS_RAID_RAID0, |
| 1009 | BTRFS_RAID_SINGLE, |
Chris Mason | e942f88 | 2013-02-20 14:06:05 -0500 | [diff] [blame] | 1010 | BTRFS_RAID_RAID5, |
| 1011 | BTRFS_RAID_RAID6, |
Miao Xie | e6ec716 | 2013-01-17 05:38:51 +0000 | [diff] [blame] | 1012 | BTRFS_NR_RAID_TYPES |
| 1013 | }; |
Chris Mason | 1e2677e | 2007-05-29 16:52:18 -0400 | [diff] [blame] | 1014 | |
Ilya Dryomov | 52ba692 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1015 | #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \ |
| 1016 | BTRFS_BLOCK_GROUP_SYSTEM | \ |
| 1017 | BTRFS_BLOCK_GROUP_METADATA) |
| 1018 | |
| 1019 | #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \ |
| 1020 | BTRFS_BLOCK_GROUP_RAID1 | \ |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1021 | BTRFS_BLOCK_GROUP_RAID5 | \ |
| 1022 | BTRFS_BLOCK_GROUP_RAID6 | \ |
Ilya Dryomov | 52ba692 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1023 | BTRFS_BLOCK_GROUP_DUP | \ |
| 1024 | BTRFS_BLOCK_GROUP_RAID10) |
Zhao Lei | ffe2d20 | 2015-01-20 15:11:44 +0800 | [diff] [blame] | 1025 | #define BTRFS_BLOCK_GROUP_RAID56_MASK (BTRFS_BLOCK_GROUP_RAID5 | \ |
| 1026 | BTRFS_BLOCK_GROUP_RAID6) |
| 1027 | |
Ilya Dryomov | a46d11a | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1028 | /* |
| 1029 | * We need a bit for restriper to be able to tell when chunks of type |
| 1030 | * SINGLE are available. This "extended" profile format is used in |
| 1031 | * fs_info->avail_*_alloc_bits (in-memory) and balance item fields |
| 1032 | * (on-disk). The corresponding on-disk bit in chunk.type is reserved |
| 1033 | * to avoid remappings between two formats in future. |
| 1034 | */ |
| 1035 | #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) |
| 1036 | |
David Sterba | 36523e95 | 2014-02-07 14:34:12 +0100 | [diff] [blame] | 1037 | /* |
| 1038 | * A fake block group type that is used to communicate global block reserve |
| 1039 | * size to userspace via the SPACE_INFO ioctl. |
| 1040 | */ |
| 1041 | #define BTRFS_SPACE_INFO_GLOBAL_RSV (1ULL << 49) |
| 1042 | |
Ilya Dryomov | 899c81e | 2012-03-27 17:09:16 +0300 | [diff] [blame] | 1043 | #define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | \ |
| 1044 | BTRFS_AVAIL_ALLOC_BIT_SINGLE) |
| 1045 | |
| 1046 | static inline u64 chunk_to_extended(u64 flags) |
| 1047 | { |
| 1048 | if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0) |
| 1049 | flags |= BTRFS_AVAIL_ALLOC_BIT_SINGLE; |
| 1050 | |
| 1051 | return flags; |
| 1052 | } |
| 1053 | static inline u64 extended_to_chunk(u64 flags) |
| 1054 | { |
| 1055 | return flags & ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; |
| 1056 | } |
| 1057 | |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1058 | struct btrfs_block_group_item { |
| 1059 | __le64 used; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1060 | __le64 chunk_objectid; |
| 1061 | __le64 flags; |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1062 | } __attribute__ ((__packed__)); |
| 1063 | |
Qu Wenruo | 8465ece | 2015-02-27 16:24:22 +0800 | [diff] [blame] | 1064 | #define BTRFS_QGROUP_LEVEL_SHIFT 48 |
| 1065 | static inline u64 btrfs_qgroup_level(u64 qgroupid) |
| 1066 | { |
| 1067 | return qgroupid >> BTRFS_QGROUP_LEVEL_SHIFT; |
| 1068 | } |
| 1069 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 1070 | /* |
| 1071 | * is subvolume quota turned on? |
| 1072 | */ |
| 1073 | #define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) |
| 1074 | /* |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1075 | * RESCAN is set during the initialization phase |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 1076 | */ |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1077 | #define BTRFS_QGROUP_STATUS_FLAG_RESCAN (1ULL << 1) |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 1078 | /* |
| 1079 | * Some qgroup entries are known to be out of date, |
| 1080 | * either because the configuration has changed in a way that |
| 1081 | * makes a rescan necessary, or because the fs has been mounted |
| 1082 | * with a non-qgroup-aware version. |
| 1083 | * Turning qouta off and on again makes it inconsistent, too. |
| 1084 | */ |
| 1085 | #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) |
| 1086 | |
| 1087 | #define BTRFS_QGROUP_STATUS_VERSION 1 |
| 1088 | |
| 1089 | struct btrfs_qgroup_status_item { |
| 1090 | __le64 version; |
| 1091 | /* |
| 1092 | * the generation is updated during every commit. As older |
| 1093 | * versions of btrfs are not aware of qgroups, it will be |
| 1094 | * possible to detect inconsistencies by checking the |
| 1095 | * generation on mount time |
| 1096 | */ |
| 1097 | __le64 generation; |
| 1098 | |
| 1099 | /* flag definitions see above */ |
| 1100 | __le64 flags; |
| 1101 | |
| 1102 | /* |
| 1103 | * only used during scanning to record the progress |
| 1104 | * of the scan. It contains a logical address |
| 1105 | */ |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1106 | __le64 rescan; |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 1107 | } __attribute__ ((__packed__)); |
| 1108 | |
| 1109 | struct btrfs_qgroup_info_item { |
| 1110 | __le64 generation; |
| 1111 | __le64 rfer; |
| 1112 | __le64 rfer_cmpr; |
| 1113 | __le64 excl; |
| 1114 | __le64 excl_cmpr; |
| 1115 | } __attribute__ ((__packed__)); |
| 1116 | |
| 1117 | /* flags definition for qgroup limits */ |
| 1118 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) |
| 1119 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) |
| 1120 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) |
| 1121 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) |
| 1122 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) |
| 1123 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) |
| 1124 | |
| 1125 | struct btrfs_qgroup_limit_item { |
| 1126 | /* |
| 1127 | * only updated when any of the other values change |
| 1128 | */ |
| 1129 | __le64 flags; |
| 1130 | __le64 max_rfer; |
| 1131 | __le64 max_excl; |
| 1132 | __le64 rsv_rfer; |
| 1133 | __le64 rsv_excl; |
| 1134 | } __attribute__ ((__packed__)); |
| 1135 | |
Jeff Mahoney | c189544 | 2014-05-27 12:59:57 -0400 | [diff] [blame] | 1136 | /* For raid type sysfs entries */ |
| 1137 | struct raid_kobject { |
| 1138 | int raid_type; |
| 1139 | struct kobject kobj; |
| 1140 | }; |
| 1141 | |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1142 | struct btrfs_space_info { |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 1143 | spinlock_t lock; |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1144 | |
Josef Bacik | 89a5589 | 2010-10-14 14:52:27 -0400 | [diff] [blame] | 1145 | u64 total_bytes; /* total bytes in the space, |
| 1146 | this doesn't take mirrors into account */ |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 1147 | u64 bytes_used; /* total bytes used, |
Lucas De Marchi | e9c5499 | 2011-04-26 23:28:26 -0700 | [diff] [blame] | 1148 | this doesn't take mirrors into account */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1149 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
| 1150 | transaction finishes */ |
| 1151 | u64 bytes_reserved; /* total bytes the allocator has reserved for |
| 1152 | current allocations */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1153 | u64 bytes_may_use; /* number of bytes that may be used for |
Josef Bacik | 9ed74f2 | 2009-09-11 16:12:44 -0400 | [diff] [blame] | 1154 | delalloc/allocations */ |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 1155 | u64 bytes_readonly; /* total bytes that are read only */ |
| 1156 | |
| 1157 | unsigned int full:1; /* indicates that we cannot allocate any more |
| 1158 | chunks for this space */ |
| 1159 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ |
| 1160 | |
| 1161 | unsigned int flush:1; /* set if we are trying to make space */ |
| 1162 | |
| 1163 | unsigned int force_alloc; /* set if we need to force a chunk |
| 1164 | alloc for this space */ |
| 1165 | |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 1166 | u64 disk_used; /* total bytes used on disk */ |
Josef Bacik | 89a5589 | 2010-10-14 14:52:27 -0400 | [diff] [blame] | 1167 | u64 disk_total; /* total bytes on disk, takes mirrors into |
| 1168 | account */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1169 | |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 1170 | u64 flags; |
| 1171 | |
Chris Mason | 36e39c4 | 2011-03-12 07:08:42 -0500 | [diff] [blame] | 1172 | /* |
Josef Bacik | b150a4f | 2013-06-19 15:00:04 -0400 | [diff] [blame] | 1173 | * bytes_pinned is kept in line with what is actually pinned, as in |
| 1174 | * we've called update_block_group and dropped the bytes_used counter |
| 1175 | * and increased the bytes_pinned counter. However this means that |
| 1176 | * bytes_pinned does not reflect the bytes that will be pinned once the |
| 1177 | * delayed refs are flushed, so this counter is inc'ed everytime we call |
| 1178 | * btrfs_free_extent so it is a realtime count of what will be freed |
| 1179 | * once the transaction is committed. It will be zero'ed everytime the |
| 1180 | * transaction commits. |
| 1181 | */ |
| 1182 | struct percpu_counter total_bytes_pinned; |
| 1183 | |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1184 | struct list_head list; |
Filipe Manana | 75c68e9 | 2015-01-16 13:24:40 +0000 | [diff] [blame] | 1185 | /* Protected by the spinlock 'lock'. */ |
Josef Bacik | 633c0aa | 2014-10-31 09:49:34 -0400 | [diff] [blame] | 1186 | struct list_head ro_bgs; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1187 | |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 1188 | struct rw_semaphore groups_sem; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1189 | /* for block groups in our same type */ |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 1190 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
Josef Bacik | fdb5eff | 2011-06-07 16:07:44 -0400 | [diff] [blame] | 1191 | wait_queue_head_t wait; |
Jeff Mahoney | 6ab0a20 | 2013-11-01 13:07:04 -0400 | [diff] [blame] | 1192 | |
| 1193 | struct kobject kobj; |
Jeff Mahoney | c189544 | 2014-05-27 12:59:57 -0400 | [diff] [blame] | 1194 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1195 | }; |
| 1196 | |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 1197 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
| 1198 | #define BTRFS_BLOCK_RSV_DELALLOC 2 |
| 1199 | #define BTRFS_BLOCK_RSV_TRANS 3 |
| 1200 | #define BTRFS_BLOCK_RSV_CHUNK 4 |
| 1201 | #define BTRFS_BLOCK_RSV_DELOPS 5 |
| 1202 | #define BTRFS_BLOCK_RSV_EMPTY 6 |
| 1203 | #define BTRFS_BLOCK_RSV_TEMP 7 |
| 1204 | |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1205 | struct btrfs_block_rsv { |
| 1206 | u64 size; |
| 1207 | u64 reserved; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1208 | struct btrfs_space_info *space_info; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1209 | spinlock_t lock; |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 1210 | unsigned short full; |
| 1211 | unsigned short type; |
| 1212 | unsigned short failfast; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1213 | }; |
| 1214 | |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 1215 | /* |
| 1216 | * free clusters are used to claim free space in relatively large chunks, |
| 1217 | * allowing us to do less seeky writes. They are used for all metadata |
| 1218 | * allocations and data allocations in ssd mode. |
| 1219 | */ |
| 1220 | struct btrfs_free_cluster { |
| 1221 | spinlock_t lock; |
| 1222 | spinlock_t refill_lock; |
| 1223 | struct rb_root root; |
| 1224 | |
| 1225 | /* largest extent in this cluster */ |
| 1226 | u64 max_size; |
| 1227 | |
| 1228 | /* first extent starting offset */ |
| 1229 | u64 window_start; |
| 1230 | |
| 1231 | struct btrfs_block_group_cache *block_group; |
| 1232 | /* |
| 1233 | * when a cluster is allocated from a block group, we put the |
| 1234 | * cluster onto a list in the block group so that it can |
| 1235 | * be freed before the block group is freed. |
| 1236 | */ |
| 1237 | struct list_head block_group_list; |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1238 | }; |
| 1239 | |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1240 | enum btrfs_caching_type { |
| 1241 | BTRFS_CACHE_NO = 0, |
| 1242 | BTRFS_CACHE_STARTED = 1, |
Josef Bacik | 291c7d2 | 2011-11-14 13:52:14 -0500 | [diff] [blame] | 1243 | BTRFS_CACHE_FAST = 2, |
| 1244 | BTRFS_CACHE_FINISHED = 3, |
Josef Bacik | 36cce92 | 2013-08-05 11:15:21 -0400 | [diff] [blame] | 1245 | BTRFS_CACHE_ERROR = 4, |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1246 | }; |
| 1247 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1248 | enum btrfs_disk_cache_state { |
| 1249 | BTRFS_DC_WRITTEN = 0, |
| 1250 | BTRFS_DC_ERROR = 1, |
| 1251 | BTRFS_DC_CLEAR = 2, |
| 1252 | BTRFS_DC_SETUP = 3, |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1253 | }; |
| 1254 | |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1255 | struct btrfs_caching_control { |
| 1256 | struct list_head list; |
| 1257 | struct mutex mutex; |
| 1258 | wait_queue_head_t wait; |
Josef Bacik | bab39bf | 2011-06-30 14:42:28 -0400 | [diff] [blame] | 1259 | struct btrfs_work work; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1260 | struct btrfs_block_group_cache *block_group; |
| 1261 | u64 progress; |
| 1262 | atomic_t count; |
| 1263 | }; |
| 1264 | |
Chris Mason | 4c6d1d8 | 2015-04-06 13:17:20 -0700 | [diff] [blame] | 1265 | struct btrfs_io_ctl { |
| 1266 | void *cur, *orig; |
| 1267 | struct page *page; |
| 1268 | struct page **pages; |
| 1269 | struct btrfs_root *root; |
Chris Mason | c9dc4c6 | 2015-04-04 17:14:42 -0700 | [diff] [blame] | 1270 | struct inode *inode; |
Chris Mason | 4c6d1d8 | 2015-04-06 13:17:20 -0700 | [diff] [blame] | 1271 | unsigned long size; |
| 1272 | int index; |
| 1273 | int num_pages; |
Chris Mason | c9dc4c6 | 2015-04-04 17:14:42 -0700 | [diff] [blame] | 1274 | int entries; |
| 1275 | int bitmaps; |
Chris Mason | 4c6d1d8 | 2015-04-06 13:17:20 -0700 | [diff] [blame] | 1276 | unsigned check_crcs:1; |
| 1277 | }; |
| 1278 | |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1279 | struct btrfs_block_group_cache { |
| 1280 | struct btrfs_key key; |
| 1281 | struct btrfs_block_group_item item; |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1282 | struct btrfs_fs_info *fs_info; |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1283 | struct inode *inode; |
Chris Mason | c286ac4 | 2008-07-22 23:06:41 -0400 | [diff] [blame] | 1284 | spinlock_t lock; |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 1285 | u64 pinned; |
Zheng Yan | e856981 | 2008-09-26 10:05:48 -0400 | [diff] [blame] | 1286 | u64 reserved; |
Miao Xie | e570fd2 | 2014-06-19 10:42:50 +0800 | [diff] [blame] | 1287 | u64 delalloc_bytes; |
Josef Bacik | 1b2da37 | 2009-09-11 16:11:20 -0400 | [diff] [blame] | 1288 | u64 bytes_super; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1289 | u64 flags; |
Josef Bacik | 9630308 | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1290 | u64 sectorsize; |
Josef Bacik | 5b0e95b | 2011-10-06 08:58:24 -0400 | [diff] [blame] | 1291 | u64 cache_generation; |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1292 | |
Miao Xie | e570fd2 | 2014-06-19 10:42:50 +0800 | [diff] [blame] | 1293 | /* |
| 1294 | * It is just used for the delayed data space allocation because |
| 1295 | * only the data space allocation and the relative metadata update |
| 1296 | * can be done cross the transaction. |
| 1297 | */ |
| 1298 | struct rw_semaphore data_rwsem; |
| 1299 | |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1300 | /* for raid56, this is a full stripe, without parity */ |
| 1301 | unsigned long full_stripe_len; |
| 1302 | |
Mariusz Kozlowski | 0410c94 | 2010-11-20 12:03:07 +0000 | [diff] [blame] | 1303 | unsigned int ro:1; |
Mariusz Kozlowski | 0410c94 | 2010-11-20 12:03:07 +0000 | [diff] [blame] | 1304 | unsigned int iref:1; |
Filipe Manana | 4f69cb9 | 2014-11-26 15:28:51 +0000 | [diff] [blame] | 1305 | unsigned int has_caching_ctl:1; |
Filipe Manana | 0421682 | 2014-11-27 21:14:15 +0000 | [diff] [blame] | 1306 | unsigned int removed:1; |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1307 | |
| 1308 | int disk_cache_state; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1309 | |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1310 | /* cache tracking stuff */ |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1311 | int cached; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1312 | struct btrfs_caching_control *caching_ctl; |
| 1313 | u64 last_byte_to_unpin; |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1314 | |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1315 | struct btrfs_space_info *space_info; |
| 1316 | |
| 1317 | /* free space cache stuff */ |
Li Zefan | 34d52cb | 2011-03-29 13:46:06 +0800 | [diff] [blame] | 1318 | struct btrfs_free_space_ctl *free_space_ctl; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1319 | |
| 1320 | /* block group cache stuff */ |
| 1321 | struct rb_node cache_node; |
| 1322 | |
| 1323 | /* for block groups in the same raid type */ |
| 1324 | struct list_head list; |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 1325 | |
| 1326 | /* usage count */ |
| 1327 | atomic_t count; |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 1328 | |
| 1329 | /* List of struct btrfs_free_clusters for this block group. |
| 1330 | * Today it will only have one thing on it, but that may change |
| 1331 | */ |
| 1332 | struct list_head cluster_list; |
Josef Bacik | ea658ba | 2012-09-11 16:57:25 -0400 | [diff] [blame] | 1333 | |
Josef Bacik | 47ab2a6 | 2014-09-18 11:20:02 -0400 | [diff] [blame] | 1334 | /* For delayed block group creation or deletion of empty block groups */ |
| 1335 | struct list_head bg_list; |
Josef Bacik | 633c0aa | 2014-10-31 09:49:34 -0400 | [diff] [blame] | 1336 | |
| 1337 | /* For read-only block groups */ |
| 1338 | struct list_head ro_list; |
Filipe Manana | 0421682 | 2014-11-27 21:14:15 +0000 | [diff] [blame] | 1339 | |
| 1340 | atomic_t trimming; |
Josef Bacik | ce93ec5 | 2014-11-17 15:45:48 -0500 | [diff] [blame] | 1341 | |
| 1342 | /* For dirty block groups */ |
| 1343 | struct list_head dirty_list; |
Chris Mason | c9dc4c6 | 2015-04-04 17:14:42 -0700 | [diff] [blame] | 1344 | struct list_head io_list; |
| 1345 | |
| 1346 | struct btrfs_io_ctl io_ctl; |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1347 | }; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1348 | |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 1349 | /* delayed seq elem */ |
| 1350 | struct seq_list { |
| 1351 | struct list_head list; |
| 1352 | u64 seq; |
| 1353 | }; |
| 1354 | |
David Sterba | 3284da7 | 2015-02-25 15:47:32 +0100 | [diff] [blame] | 1355 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
| 1356 | |
Josef Bacik | 5d80366 | 2013-02-07 16:06:02 -0500 | [diff] [blame] | 1357 | enum btrfs_orphan_cleanup_state { |
| 1358 | ORPHAN_CLEANUP_STARTED = 1, |
| 1359 | ORPHAN_CLEANUP_DONE = 2, |
| 1360 | }; |
| 1361 | |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1362 | /* used by the raid56 code to lock stripes for read/modify/write */ |
| 1363 | struct btrfs_stripe_hash { |
| 1364 | struct list_head hash_list; |
| 1365 | wait_queue_head_t wait; |
| 1366 | spinlock_t lock; |
| 1367 | }; |
| 1368 | |
| 1369 | /* used by the raid56 code to lock stripes for read/modify/write */ |
| 1370 | struct btrfs_stripe_hash_table { |
Chris Mason | 4ae10b3 | 2013-01-31 14:42:09 -0500 | [diff] [blame] | 1371 | struct list_head stripe_cache; |
| 1372 | spinlock_t cache_lock; |
| 1373 | int cache_size; |
| 1374 | struct btrfs_stripe_hash table[]; |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1375 | }; |
| 1376 | |
| 1377 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 |
| 1378 | |
Miao Xie | 21c7e75 | 2014-05-13 17:29:04 -0700 | [diff] [blame] | 1379 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
| 1380 | |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 1381 | /* fs_info */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1382 | struct reloc_control; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1383 | struct btrfs_device; |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 1384 | struct btrfs_fs_devices; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1385 | struct btrfs_balance_control; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1386 | struct btrfs_delayed_root; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1387 | struct btrfs_fs_info { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1388 | u8 fsid[BTRFS_FSID_SIZE]; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1389 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1390 | struct btrfs_root *extent_root; |
| 1391 | struct btrfs_root *tree_root; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1392 | struct btrfs_root *chunk_root; |
| 1393 | struct btrfs_root *dev_root; |
Chris Mason | 3de4586 | 2008-11-17 21:02:50 -0500 | [diff] [blame] | 1394 | struct btrfs_root *fs_root; |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 1395 | struct btrfs_root *csum_root; |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1396 | struct btrfs_root *quota_root; |
Stefan Behrens | f7a81ea | 2013-08-15 17:11:19 +0200 | [diff] [blame] | 1397 | struct btrfs_root *uuid_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1398 | |
| 1399 | /* the log root tree is a directory of all the other log roots */ |
| 1400 | struct btrfs_root *log_root_tree; |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 1401 | |
| 1402 | spinlock_t fs_roots_radix_lock; |
Chris Mason | 0f7d52f | 2007-04-09 10:42:37 -0400 | [diff] [blame] | 1403 | struct radix_tree_root fs_roots_radix; |
Chris Mason | 1a5bc16 | 2007-10-15 16:15:26 -0400 | [diff] [blame] | 1404 | |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1405 | /* block group cache stuff */ |
| 1406 | spinlock_t block_group_cache_lock; |
Liu Bo | a1897fd | 2012-12-27 09:01:23 +0000 | [diff] [blame] | 1407 | u64 first_logical_byte; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1408 | struct rb_root block_group_cache_tree; |
| 1409 | |
Josef Bacik | 2bf6475 | 2011-09-26 17:12:22 -0400 | [diff] [blame] | 1410 | /* keep track of unallocated space */ |
| 1411 | spinlock_t free_chunk_lock; |
| 1412 | u64 free_chunk_space; |
| 1413 | |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1414 | struct extent_io_tree freed_extents[2]; |
| 1415 | struct extent_io_tree *pinned_extents; |
Chris Mason | 1a5bc16 | 2007-10-15 16:15:26 -0400 | [diff] [blame] | 1416 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1417 | /* logical->physical extent mapping */ |
| 1418 | struct btrfs_mapping_tree mapping_tree; |
| 1419 | |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1420 | /* |
| 1421 | * block reservation for extent, checksum, root tree and |
| 1422 | * delayed dir index item |
| 1423 | */ |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1424 | struct btrfs_block_rsv global_block_rsv; |
| 1425 | /* block reservation for delay allocation */ |
| 1426 | struct btrfs_block_rsv delalloc_block_rsv; |
| 1427 | /* block reservation for metadata operations */ |
| 1428 | struct btrfs_block_rsv trans_block_rsv; |
| 1429 | /* block reservation for chunk tree */ |
| 1430 | struct btrfs_block_rsv chunk_block_rsv; |
Josef Bacik | 6d668dd | 2011-11-03 22:54:25 -0400 | [diff] [blame] | 1431 | /* block reservation for delayed operations */ |
| 1432 | struct btrfs_block_rsv delayed_block_rsv; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1433 | |
| 1434 | struct btrfs_block_rsv empty_block_rsv; |
| 1435 | |
Chris Mason | 293ffd5 | 2007-03-20 15:57:25 -0400 | [diff] [blame] | 1436 | u64 generation; |
Josef Bacik | 15ee9bc | 2007-08-10 16:22:09 -0400 | [diff] [blame] | 1437 | u64 last_trans_committed; |
Josef Bacik | 0a2b2a8 | 2014-01-23 10:54:11 -0500 | [diff] [blame] | 1438 | u64 avg_delayed_ref_runtime; |
Chris Mason | 12fcfd2 | 2009-03-24 10:24:20 -0400 | [diff] [blame] | 1439 | |
| 1440 | /* |
| 1441 | * this is updated to the current trans every time a full commit |
| 1442 | * is required instead of the faster short fsync log commits |
| 1443 | */ |
| 1444 | u64 last_trans_log_full_commit; |
Stefan Behrens | 25cd999 | 2012-03-30 13:58:32 +0200 | [diff] [blame] | 1445 | unsigned long mount_opt; |
David Sterba | 572d9ab | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 1446 | /* |
| 1447 | * Track requests for actions that need to be done during transaction |
| 1448 | * commit (like for some mount options). |
| 1449 | */ |
| 1450 | unsigned long pending_changes; |
Li Zefan | 261507a0 | 2010-12-17 14:21:50 +0800 | [diff] [blame] | 1451 | unsigned long compress_type:4; |
David Sterba | 8b87dc1 | 2013-08-01 18:14:52 +0200 | [diff] [blame] | 1452 | int commit_interval; |
Miao Xie | 8c6a3ee | 2013-01-29 10:05:05 +0000 | [diff] [blame] | 1453 | /* |
| 1454 | * It is a suggestive number, the read side is safe even it gets a |
| 1455 | * wrong number because we will write out the data into a regular |
| 1456 | * extent. The write side(mount/remount) is under ->s_umount lock, |
| 1457 | * so it is also safe. |
| 1458 | */ |
Chris Mason | 6f568d3 | 2008-01-29 16:03:38 -0500 | [diff] [blame] | 1459 | u64 max_inline; |
Miao Xie | c018dae | 2013-01-29 10:07:33 +0000 | [diff] [blame] | 1460 | /* |
| 1461 | * Protected by ->chunk_mutex and sb->s_umount. |
| 1462 | * |
| 1463 | * The reason that we use two lock to protect it is because only |
| 1464 | * remount and mount operations can change it and these two operations |
| 1465 | * are under sb->s_umount, but the read side (chunk allocation) can not |
| 1466 | * acquire sb->s_umount or the deadlock would happen. So we use two |
| 1467 | * locks to protect it. On the write side, we must acquire two locks, |
| 1468 | * and on the read side, we just need acquire one of them. |
| 1469 | */ |
Chris Mason | 8f662a7 | 2008-01-02 10:01:11 -0500 | [diff] [blame] | 1470 | u64 alloc_start; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 1471 | struct btrfs_transaction *running_transaction; |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 1472 | wait_queue_head_t transaction_throttle; |
Chris Mason | f929574 | 2008-07-17 12:54:14 -0400 | [diff] [blame] | 1473 | wait_queue_head_t transaction_wait; |
Sage Weil | bb9c12c | 2010-10-29 15:37:34 -0400 | [diff] [blame] | 1474 | wait_queue_head_t transaction_blocked_wait; |
Chris Mason | 771ed68 | 2008-11-06 22:02:51 -0500 | [diff] [blame] | 1475 | wait_queue_head_t async_submit_wait; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1476 | |
Miao Xie | ceda086 | 2013-04-11 10:30:16 +0000 | [diff] [blame] | 1477 | /* |
| 1478 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags |
| 1479 | * when they are updated. |
| 1480 | * |
| 1481 | * Because we do not clear the flags for ever, so we needn't use |
| 1482 | * the lock on the read side. |
| 1483 | * |
| 1484 | * We also needn't use the lock when we mount the fs, because |
| 1485 | * there is no other task which will update the flag. |
| 1486 | */ |
| 1487 | spinlock_t super_lock; |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 1488 | struct btrfs_super_block *super_copy; |
| 1489 | struct btrfs_super_block *super_for_commit; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1490 | struct block_device *__bdev; |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 1491 | struct super_block *sb; |
Chris Mason | d98237b | 2007-03-28 13:57:48 -0400 | [diff] [blame] | 1492 | struct inode *btree_inode; |
Chris Mason | 0416008 | 2008-03-26 10:28:07 -0400 | [diff] [blame] | 1493 | struct backing_dev_info bdi; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1494 | struct mutex tree_log_mutex; |
Chris Mason | a74a4b9 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 1495 | struct mutex transaction_kthread_mutex; |
| 1496 | struct mutex cleaner_mutex; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 1497 | struct mutex chunk_mutex; |
Chris Mason | 7d9eb12 | 2008-07-08 14:19:17 -0400 | [diff] [blame] | 1498 | struct mutex volume_mutex; |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1499 | |
Chris Mason | 1bbc621 | 2015-04-06 12:46:08 -0700 | [diff] [blame] | 1500 | /* |
| 1501 | * this is taken to make sure we don't set block groups ro after |
| 1502 | * the free space cache has been allocated on them |
| 1503 | */ |
| 1504 | struct mutex ro_block_group_mutex; |
| 1505 | |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1506 | /* this is used during read/modify/write to make sure |
| 1507 | * no two ios are trying to mod the same stripe at the same |
| 1508 | * time |
| 1509 | */ |
| 1510 | struct btrfs_stripe_hash_table *stripe_hash_table; |
| 1511 | |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1512 | /* |
| 1513 | * this protects the ordered operations list only while we are |
| 1514 | * processing all of the entries on it. This way we make |
| 1515 | * sure the commit code doesn't find the list temporarily empty |
| 1516 | * because another function happens to be doing non-waiting preflush |
| 1517 | * before jumping into the main commit. |
| 1518 | */ |
| 1519 | struct mutex ordered_operations_mutex; |
Josef Bacik | 9ffba8c | 2013-08-14 11:33:56 -0400 | [diff] [blame] | 1520 | |
| 1521 | /* |
| 1522 | * Same as ordered_operations_mutex except this is for ordered extents |
| 1523 | * and not the operations. |
| 1524 | */ |
| 1525 | struct mutex ordered_extent_flush_mutex; |
| 1526 | |
Josef Bacik | 9e351cc | 2014-03-13 15:42:13 -0400 | [diff] [blame] | 1527 | struct rw_semaphore commit_root_sem; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1528 | |
Yan, Zheng | c71bf09 | 2009-11-12 09:34:40 +0000 | [diff] [blame] | 1529 | struct rw_semaphore cleanup_work_sem; |
Yan, Zheng | 76dda93 | 2009-09-21 16:00:26 -0400 | [diff] [blame] | 1530 | |
Yan, Zheng | c71bf09 | 2009-11-12 09:34:40 +0000 | [diff] [blame] | 1531 | struct rw_semaphore subvol_sem; |
Yan, Zheng | 76dda93 | 2009-09-21 16:00:26 -0400 | [diff] [blame] | 1532 | struct srcu_struct subvol_srcu; |
| 1533 | |
Josef Bacik | a4abeea | 2011-04-11 17:25:13 -0400 | [diff] [blame] | 1534 | spinlock_t trans_lock; |
Chris Mason | 7585717 | 2011-06-13 20:00:16 -0400 | [diff] [blame] | 1535 | /* |
| 1536 | * the reloc mutex goes with the trans lock, it is taken |
| 1537 | * during commit to protect us from the relocation code |
| 1538 | */ |
| 1539 | struct mutex reloc_mutex; |
| 1540 | |
Chris Mason | 8fd1779 | 2007-04-19 21:01:03 -0400 | [diff] [blame] | 1541 | struct list_head trans_list; |
Chris Mason | facda1e | 2007-06-08 18:11:48 -0400 | [diff] [blame] | 1542 | struct list_head dead_roots; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1543 | struct list_head caching_block_groups; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1544 | |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 1545 | spinlock_t delayed_iput_lock; |
| 1546 | struct list_head delayed_iputs; |
Zhao Lei | d7c1517 | 2015-02-26 10:49:20 +0800 | [diff] [blame] | 1547 | struct rw_semaphore delayed_iput_sem; |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 1548 | |
Jan Schmidt | f29021b | 2012-05-16 17:55:38 +0200 | [diff] [blame] | 1549 | /* this protects tree_mod_seq_list */ |
| 1550 | spinlock_t tree_mod_seq_lock; |
Jan Schmidt | fc36ed7e | 2013-04-24 16:57:33 +0000 | [diff] [blame] | 1551 | atomic64_t tree_mod_seq; |
Jan Schmidt | f29021b | 2012-05-16 17:55:38 +0200 | [diff] [blame] | 1552 | struct list_head tree_mod_seq_list; |
| 1553 | |
| 1554 | /* this protects tree_mod_log */ |
| 1555 | rwlock_t tree_mod_log_lock; |
| 1556 | struct rb_root tree_mod_log; |
| 1557 | |
Chris Mason | cb03c74 | 2008-05-15 16:15:45 -0400 | [diff] [blame] | 1558 | atomic_t nr_async_submits; |
Chris Mason | 8c8bee1 | 2008-09-29 11:19:10 -0400 | [diff] [blame] | 1559 | atomic_t async_submit_draining; |
Chris Mason | 0986fe9e | 2008-08-15 15:34:15 -0400 | [diff] [blame] | 1560 | atomic_t nr_async_bios; |
Chris Mason | 771ed68 | 2008-11-06 22:02:51 -0500 | [diff] [blame] | 1561 | atomic_t async_delalloc_pages; |
Josef Bacik | a4abeea | 2011-04-11 17:25:13 -0400 | [diff] [blame] | 1562 | atomic_t open_ioctl_trans; |
Chris Mason | ce9adaa | 2008-04-09 16:28:12 -0400 | [diff] [blame] | 1563 | |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1564 | /* |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 1565 | * this is used to protect the following list -- ordered_roots. |
Chris Mason | 3eaa288 | 2008-07-24 11:57:52 -0400 | [diff] [blame] | 1566 | */ |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 1567 | spinlock_t ordered_root_lock; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1568 | |
| 1569 | /* |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 1570 | * all fs/file tree roots in which there are data=ordered extents |
| 1571 | * pending writeback are added into this list. |
| 1572 | * |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1573 | * these can span multiple transactions and basically include |
| 1574 | * every dirty data page that isn't from nodatacow |
| 1575 | */ |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 1576 | struct list_head ordered_roots; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1577 | |
Miao Xie | 573bfb7 | 2014-03-06 13:55:03 +0800 | [diff] [blame] | 1578 | struct mutex delalloc_root_mutex; |
Miao Xie | eb73c1b | 2013-05-15 07:48:22 +0000 | [diff] [blame] | 1579 | spinlock_t delalloc_root_lock; |
| 1580 | /* all fs/file tree roots that have delalloc inodes. */ |
| 1581 | struct list_head delalloc_roots; |
Chris Mason | 3eaa288 | 2008-07-24 11:57:52 -0400 | [diff] [blame] | 1582 | |
| 1583 | /* |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1584 | * there is a pool of worker threads for checksumming during writes |
| 1585 | * and a pool for checksumming after reads. This is because readers |
| 1586 | * can run with FS locks held, and the writers may be waiting for |
| 1587 | * those locks. We don't want ordering in the pending list to cause |
| 1588 | * deadlocks, and so the two are serviced separately. |
Chris Mason | 1cc127b | 2008-06-12 14:46:17 -0400 | [diff] [blame] | 1589 | * |
| 1590 | * A third pool does submit_bio to avoid deadlocking with the other |
| 1591 | * two |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1592 | */ |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 1593 | struct btrfs_workqueue *workers; |
| 1594 | struct btrfs_workqueue *delalloc_workers; |
| 1595 | struct btrfs_workqueue *flush_workers; |
| 1596 | struct btrfs_workqueue *endio_workers; |
| 1597 | struct btrfs_workqueue *endio_meta_workers; |
| 1598 | struct btrfs_workqueue *endio_raid56_workers; |
Miao Xie | 8b110e3 | 2014-09-12 18:44:03 +0800 | [diff] [blame] | 1599 | struct btrfs_workqueue *endio_repair_workers; |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 1600 | struct btrfs_workqueue *rmw_workers; |
| 1601 | struct btrfs_workqueue *endio_meta_write_workers; |
| 1602 | struct btrfs_workqueue *endio_write_workers; |
| 1603 | struct btrfs_workqueue *endio_freespace_worker; |
| 1604 | struct btrfs_workqueue *submit_workers; |
| 1605 | struct btrfs_workqueue *caching_workers; |
| 1606 | struct btrfs_workqueue *readahead_workers; |
Josef Bacik | bab39bf | 2011-06-30 14:42:28 -0400 | [diff] [blame] | 1607 | |
Chris Mason | 247e743 | 2008-07-17 12:53:51 -0400 | [diff] [blame] | 1608 | /* |
| 1609 | * fixup workers take dirty pages that didn't properly go through |
| 1610 | * the cow mechanism and make them safe to write. It happens |
| 1611 | * for the sys_munmap function call path |
| 1612 | */ |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 1613 | struct btrfs_workqueue *fixup_workers; |
| 1614 | struct btrfs_workqueue *delayed_workers; |
Chris Mason | a79b7d4 | 2014-05-22 16:18:52 -0700 | [diff] [blame] | 1615 | |
| 1616 | /* the extent workers do delayed refs on the extent allocation tree */ |
| 1617 | struct btrfs_workqueue *extent_workers; |
Chris Mason | a74a4b9 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 1618 | struct task_struct *transaction_kthread; |
| 1619 | struct task_struct *cleaner_kthread; |
Chris Mason | 4543df7 | 2008-06-11 21:47:56 -0400 | [diff] [blame] | 1620 | int thread_pool_size; |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1621 | |
Jeff Mahoney | 6ab0a20 | 2013-11-01 13:07:04 -0400 | [diff] [blame] | 1622 | struct kobject *space_info_kobj; |
Chris Mason | e66f709 | 2007-04-20 13:16:02 -0400 | [diff] [blame] | 1623 | int do_barriers; |
Chris Mason | facda1e | 2007-06-08 18:11:48 -0400 | [diff] [blame] | 1624 | int closing; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1625 | int log_root_recovering; |
Josef Bacik | 47ab2a6 | 2014-09-18 11:20:02 -0400 | [diff] [blame] | 1626 | int open; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1627 | |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 1628 | u64 total_pinned; |
Chris Mason | b947343 | 2009-03-13 11:00:37 -0400 | [diff] [blame] | 1629 | |
Miao Xie | e2d8452 | 2013-01-29 10:09:20 +0000 | [diff] [blame] | 1630 | /* used to keep from writing metadata until there is a nice batch */ |
| 1631 | struct percpu_counter dirty_metadata_bytes; |
Miao Xie | 963d678 | 2013-01-29 10:10:51 +0000 | [diff] [blame] | 1632 | struct percpu_counter delalloc_bytes; |
Miao Xie | e2d8452 | 2013-01-29 10:09:20 +0000 | [diff] [blame] | 1633 | s32 dirty_metadata_batch; |
Miao Xie | 963d678 | 2013-01-29 10:10:51 +0000 | [diff] [blame] | 1634 | s32 delalloc_batch; |
| 1635 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1636 | struct list_head dirty_cowonly_roots; |
| 1637 | |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 1638 | struct btrfs_fs_devices *fs_devices; |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 1639 | |
| 1640 | /* |
| 1641 | * the space_info list is almost entirely read only. It only changes |
| 1642 | * when we add a new raid type to the FS, and that happens |
| 1643 | * very rarely. RCU is used to protect it. |
| 1644 | */ |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1645 | struct list_head space_info; |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 1646 | |
Li Zefan | b4d7c3c | 2012-07-09 20:21:07 -0600 | [diff] [blame] | 1647 | struct btrfs_space_info *data_sinfo; |
| 1648 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1649 | struct reloc_control *reloc_ctl; |
| 1650 | |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 1651 | /* data_alloc_cluster is only used in ssd mode */ |
| 1652 | struct btrfs_free_cluster data_alloc_cluster; |
| 1653 | |
| 1654 | /* all metadata allocations go through this cluster */ |
| 1655 | struct btrfs_free_cluster meta_alloc_cluster; |
Chris Mason | d18a2c4 | 2008-04-04 15:40:00 -0400 | [diff] [blame] | 1656 | |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 1657 | /* auto defrag inodes go here */ |
| 1658 | spinlock_t defrag_inodes_lock; |
| 1659 | struct rb_root defrag_inodes; |
| 1660 | atomic_t defrag_running; |
| 1661 | |
Miao Xie | de98ced | 2013-01-29 10:13:12 +0000 | [diff] [blame] | 1662 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
| 1663 | seqlock_t profiles_lock; |
Ilya Dryomov | a46d11a | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1664 | /* |
| 1665 | * these three are in extended format (availability of single |
| 1666 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other |
| 1667 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) |
| 1668 | */ |
Chris Mason | d18a2c4 | 2008-04-04 15:40:00 -0400 | [diff] [blame] | 1669 | u64 avail_data_alloc_bits; |
| 1670 | u64 avail_metadata_alloc_bits; |
| 1671 | u64 avail_system_alloc_bits; |
Chris Mason | 788f20e | 2008-04-28 15:29:42 -0400 | [diff] [blame] | 1672 | |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1673 | /* restriper state */ |
| 1674 | spinlock_t balance_lock; |
| 1675 | struct mutex balance_mutex; |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 1676 | atomic_t balance_running; |
| 1677 | atomic_t balance_pause_req; |
Ilya Dryomov | a7e99c6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 1678 | atomic_t balance_cancel_req; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1679 | struct btrfs_balance_control *balance_ctl; |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 1680 | wait_queue_head_t balance_wait_q; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1681 | |
Josef Bacik | 97e728d | 2009-04-21 17:40:57 -0400 | [diff] [blame] | 1682 | unsigned data_chunk_allocations; |
| 1683 | unsigned metadata_ratio; |
| 1684 | |
Chris Mason | 788f20e | 2008-04-28 15:29:42 -0400 | [diff] [blame] | 1685 | void *bdev_holder; |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 1686 | |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 1687 | /* private scrub information */ |
| 1688 | struct mutex scrub_lock; |
| 1689 | atomic_t scrubs_running; |
| 1690 | atomic_t scrub_pause_req; |
| 1691 | atomic_t scrubs_paused; |
| 1692 | atomic_t scrub_cancel_req; |
| 1693 | wait_queue_head_t scrub_pause_wait; |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 1694 | int scrub_workers_refcnt; |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 1695 | struct btrfs_workqueue *scrub_workers; |
| 1696 | struct btrfs_workqueue *scrub_wr_completion_workers; |
| 1697 | struct btrfs_workqueue *scrub_nocow_workers; |
Zhao Lei | 20b2e30 | 2015-06-04 20:09:15 +0800 | [diff] [blame] | 1698 | struct btrfs_workqueue *scrub_parity_workers; |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 1699 | |
Stefan Behrens | 21adbd5 | 2011-11-09 13:44:05 +0100 | [diff] [blame] | 1700 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
| 1701 | u32 check_integrity_print_mask; |
| 1702 | #endif |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1703 | /* |
| 1704 | * quota information |
| 1705 | */ |
| 1706 | unsigned int quota_enabled:1; |
| 1707 | |
| 1708 | /* |
| 1709 | * quota_enabled only changes state after a commit. This holds the |
| 1710 | * next state. |
| 1711 | */ |
| 1712 | unsigned int pending_quota_state:1; |
| 1713 | |
| 1714 | /* is qgroup tracking in a consistent state? */ |
| 1715 | u64 qgroup_flags; |
| 1716 | |
| 1717 | /* holds configuration and tracking. Protected by qgroup_lock */ |
| 1718 | struct rb_root qgroup_tree; |
Josef Bacik | fcebe45 | 2014-05-13 17:30:47 -0700 | [diff] [blame] | 1719 | struct rb_root qgroup_op_tree; |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1720 | spinlock_t qgroup_lock; |
Josef Bacik | fcebe45 | 2014-05-13 17:30:47 -0700 | [diff] [blame] | 1721 | spinlock_t qgroup_op_lock; |
| 1722 | atomic_t qgroup_op_seq; |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1723 | |
Wang Shilong | 1e8f915 | 2013-05-06 11:03:27 +0000 | [diff] [blame] | 1724 | /* |
| 1725 | * used to avoid frequently calling ulist_alloc()/ulist_free() |
| 1726 | * when doing qgroup accounting, it must be protected by qgroup_lock. |
| 1727 | */ |
| 1728 | struct ulist *qgroup_ulist; |
| 1729 | |
Wang Shilong | f2f6ed3 | 2013-04-07 10:50:16 +0000 | [diff] [blame] | 1730 | /* protect user change for quota operations */ |
| 1731 | struct mutex qgroup_ioctl_lock; |
| 1732 | |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1733 | /* list of dirty qgroups to be written at next commit */ |
| 1734 | struct list_head dirty_qgroups; |
| 1735 | |
Qu Wenruo | e69bcee | 2015-04-17 10:23:16 +0800 | [diff] [blame] | 1736 | /* used by qgroup for an efficient tree traversal */ |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1737 | u64 qgroup_seq; |
Stefan Behrens | 21adbd5 | 2011-11-09 13:44:05 +0100 | [diff] [blame] | 1738 | |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1739 | /* qgroup rescan items */ |
| 1740 | struct mutex qgroup_rescan_lock; /* protects the progress item */ |
| 1741 | struct btrfs_key qgroup_rescan_progress; |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 1742 | struct btrfs_workqueue *qgroup_rescan_workers; |
Jan Schmidt | 57254b6e | 2013-05-06 19:14:17 +0000 | [diff] [blame] | 1743 | struct completion qgroup_rescan_completion; |
Jan Schmidt | b382a32 | 2013-05-28 15:47:24 +0000 | [diff] [blame] | 1744 | struct btrfs_work qgroup_rescan_work; |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1745 | |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 1746 | /* filesystem state */ |
Miao Xie | 87533c4 | 2013-01-29 10:14:48 +0000 | [diff] [blame] | 1747 | unsigned long fs_state; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1748 | |
| 1749 | struct btrfs_delayed_root *delayed_root; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 1750 | |
Arne Jansen | 90519d6 | 2011-05-23 14:30:00 +0200 | [diff] [blame] | 1751 | /* readahead tree */ |
| 1752 | spinlock_t reada_lock; |
| 1753 | struct radix_tree_root reada_tree; |
Chris Mason | 531f4b1a | 2011-11-06 03:05:08 -0500 | [diff] [blame] | 1754 | |
Josef Bacik | f28491e | 2013-12-16 13:24:27 -0500 | [diff] [blame] | 1755 | /* Extent buffer radix tree */ |
| 1756 | spinlock_t buffer_lock; |
| 1757 | struct radix_tree_root buffer_radix; |
| 1758 | |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 1759 | /* next backup root to be overwritten */ |
| 1760 | int backup_root_index; |
Stefan Behrens | 5af3e8c | 2012-08-01 18:56:49 +0200 | [diff] [blame] | 1761 | |
| 1762 | int num_tolerated_disk_barrier_failures; |
Stefan Behrens | e922e08 | 2012-11-05 17:26:40 +0100 | [diff] [blame] | 1763 | |
| 1764 | /* device replace state */ |
| 1765 | struct btrfs_dev_replace dev_replace; |
Stefan Behrens | 5ac00ad | 2012-11-05 17:54:08 +0100 | [diff] [blame] | 1766 | |
| 1767 | atomic_t mutually_exclusive_operation_running; |
Stefan Behrens | 803b2f5 | 2013-08-15 17:11:21 +0200 | [diff] [blame] | 1768 | |
Miao Xie | c404e0d | 2014-01-30 16:46:55 +0800 | [diff] [blame] | 1769 | struct percpu_counter bio_counter; |
| 1770 | wait_queue_head_t replace_wait; |
| 1771 | |
Stefan Behrens | 803b2f5 | 2013-08-15 17:11:21 +0200 | [diff] [blame] | 1772 | struct semaphore uuid_tree_rescan_sem; |
Stefan Behrens | 70f8017 | 2013-08-15 17:11:23 +0200 | [diff] [blame] | 1773 | unsigned int update_uuid_tree_gen:1; |
Miao Xie | 21c7e75 | 2014-05-13 17:29:04 -0700 | [diff] [blame] | 1774 | |
| 1775 | /* Used to reclaim the metadata space in the background. */ |
| 1776 | struct work_struct async_reclaim_work; |
Josef Bacik | 47ab2a6 | 2014-09-18 11:20:02 -0400 | [diff] [blame] | 1777 | |
| 1778 | spinlock_t unused_bgs_lock; |
| 1779 | struct list_head unused_bgs; |
Filipe Manana | d4b450c | 2015-01-29 19:18:25 +0000 | [diff] [blame] | 1780 | struct mutex unused_bg_unpin_mutex; |
Filipe Manana | 67c5e7d | 2015-06-11 00:58:53 +0100 | [diff] [blame] | 1781 | struct mutex delete_unused_bgs_mutex; |
Qu Wenruo | f667aef | 2014-09-23 13:40:08 +0800 | [diff] [blame] | 1782 | |
| 1783 | /* For btrfs to record security options */ |
| 1784 | struct security_mnt_opts security_opts; |
Filipe Manana | 0421682 | 2014-11-27 21:14:15 +0000 | [diff] [blame] | 1785 | |
| 1786 | /* |
| 1787 | * Chunks that can't be freed yet (under a trim/discard operation) |
| 1788 | * and will be latter freed. Protected by fs_info->chunk_mutex. |
| 1789 | */ |
| 1790 | struct list_head pinned_chunks; |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 1791 | }; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1792 | |
Miao Xie | 8257b2d | 2014-03-06 13:38:19 +0800 | [diff] [blame] | 1793 | struct btrfs_subvolume_writers { |
| 1794 | struct percpu_counter counter; |
| 1795 | wait_queue_head_t wait; |
| 1796 | }; |
| 1797 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1798 | /* |
Miao Xie | 27cdeb7 | 2014-04-02 19:51:05 +0800 | [diff] [blame] | 1799 | * The state of btrfs root |
| 1800 | */ |
| 1801 | /* |
| 1802 | * btrfs_record_root_in_trans is a multi-step process, |
| 1803 | * and it can race with the balancing code. But the |
| 1804 | * race is very small, and only the first time the root |
| 1805 | * is added to each transaction. So IN_TRANS_SETUP |
| 1806 | * is used to tell us when more checks are required |
| 1807 | */ |
| 1808 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 |
| 1809 | #define BTRFS_ROOT_REF_COWS 1 |
| 1810 | #define BTRFS_ROOT_TRACK_DIRTY 2 |
| 1811 | #define BTRFS_ROOT_IN_RADIX 3 |
| 1812 | #define BTRFS_ROOT_DUMMY_ROOT 4 |
| 1813 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 5 |
| 1814 | #define BTRFS_ROOT_DEFRAG_RUNNING 6 |
| 1815 | #define BTRFS_ROOT_FORCE_COW 7 |
| 1816 | #define BTRFS_ROOT_MULTI_LOG_TASKS 8 |
Josef Bacik | e7070be | 2014-12-16 08:54:43 -0800 | [diff] [blame] | 1817 | #define BTRFS_ROOT_DIRTY 9 |
Miao Xie | 27cdeb7 | 2014-04-02 19:51:05 +0800 | [diff] [blame] | 1818 | |
| 1819 | /* |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1820 | * in ram representation of the tree. extent_root is used for all allocations |
Chris Mason | f2458e1 | 2007-04-25 15:52:25 -0400 | [diff] [blame] | 1821 | * and for the extent tree extent_root root. |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1822 | */ |
| 1823 | struct btrfs_root { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1824 | struct extent_buffer *node; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 1825 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1826 | struct extent_buffer *commit_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1827 | struct btrfs_root *log_root; |
Zheng Yan | 1a40e23 | 2008-09-26 10:09:34 -0400 | [diff] [blame] | 1828 | struct btrfs_root *reloc_root; |
Yan Zheng | 31153d8 | 2008-07-28 15:32:19 -0400 | [diff] [blame] | 1829 | |
Miao Xie | 27cdeb7 | 2014-04-02 19:51:05 +0800 | [diff] [blame] | 1830 | unsigned long state; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1831 | struct btrfs_root_item root_item; |
| 1832 | struct btrfs_key root_key; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1833 | struct btrfs_fs_info *fs_info; |
Chris Mason | d0c803c | 2008-09-11 16:17:57 -0400 | [diff] [blame] | 1834 | struct extent_io_tree dirty_log_pages; |
| 1835 | |
Chris Mason | a213501 | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 1836 | struct mutex objectid_mutex; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1837 | |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1838 | spinlock_t accounting_lock; |
| 1839 | struct btrfs_block_rsv *block_rsv; |
| 1840 | |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1841 | /* free ino cache stuff */ |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1842 | struct btrfs_free_space_ctl *free_ino_ctl; |
David Sterba | 57cdc8d | 2014-02-05 02:37:48 +0100 | [diff] [blame] | 1843 | enum btrfs_caching_type ino_cache_state; |
| 1844 | spinlock_t ino_cache_lock; |
| 1845 | wait_queue_head_t ino_cache_wait; |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1846 | struct btrfs_free_space_ctl *free_ino_pinned; |
David Sterba | 57cdc8d | 2014-02-05 02:37:48 +0100 | [diff] [blame] | 1847 | u64 ino_cache_progress; |
| 1848 | struct inode *ino_cache_inode; |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1849 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1850 | struct mutex log_mutex; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1851 | wait_queue_head_t log_writer_wait; |
| 1852 | wait_queue_head_t log_commit_wait[2]; |
Miao Xie | 8b050d3 | 2014-02-20 18:08:58 +0800 | [diff] [blame] | 1853 | struct list_head log_ctxs[2]; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1854 | atomic_t log_writers; |
| 1855 | atomic_t log_commit[2]; |
Miao Xie | 2ecb792 | 2012-09-06 04:04:27 -0600 | [diff] [blame] | 1856 | atomic_t log_batch; |
Miao Xie | bb14a59 | 2014-02-20 18:08:56 +0800 | [diff] [blame] | 1857 | int log_transid; |
Miao Xie | d1433de | 2014-02-20 18:08:59 +0800 | [diff] [blame] | 1858 | /* No matter the commit succeeds or not*/ |
| 1859 | int log_transid_committed; |
| 1860 | /* Just be updated when the commit succeeds. */ |
Miao Xie | bb14a59 | 2014-02-20 18:08:56 +0800 | [diff] [blame] | 1861 | int last_log_commit; |
Josef Bacik | ff782e0 | 2009-10-08 15:30:04 -0400 | [diff] [blame] | 1862 | pid_t log_start_pid; |
Chris Mason | ea8c281 | 2008-08-04 23:17:27 -0400 | [diff] [blame] | 1863 | |
Chris Mason | 0f7d52f | 2007-04-09 10:42:37 -0400 | [diff] [blame] | 1864 | u64 objectid; |
| 1865 | u64 last_trans; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1866 | |
| 1867 | /* data allocations are done in sectorsize units */ |
| 1868 | u32 sectorsize; |
| 1869 | |
| 1870 | /* node allocations are done in nodesize units */ |
| 1871 | u32 nodesize; |
| 1872 | |
Chris Mason | 87ee04e | 2007-11-30 11:30:34 -0500 | [diff] [blame] | 1873 | u32 stripesize; |
| 1874 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1875 | u32 type; |
Yan, Zheng | 13a8a7c | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 1876 | |
| 1877 | u64 highest_objectid; |
Chris Mason | 7585717 | 2011-06-13 20:00:16 -0400 | [diff] [blame] | 1878 | |
Chris Mason | 0d4cf4e | 2014-10-07 13:24:20 -0700 | [diff] [blame] | 1879 | /* only used with CONFIG_BTRFS_FS_RUN_SANITY_TESTS is enabled */ |
Josef Bacik | faa2dbf | 2014-05-07 17:06:09 -0400 | [diff] [blame] | 1880 | u64 alloc_bytenr; |
Josef Bacik | faa2dbf | 2014-05-07 17:06:09 -0400 | [diff] [blame] | 1881 | |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 1882 | u64 defrag_trans_start; |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 1883 | struct btrfs_key defrag_progress; |
Chris Mason | 0ef3e66 | 2008-05-24 14:04:53 -0400 | [diff] [blame] | 1884 | struct btrfs_key defrag_max; |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 1885 | char *name; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1886 | |
| 1887 | /* the dirty list is only used by non-reference counted roots */ |
| 1888 | struct list_head dirty_list; |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 1889 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1890 | struct list_head root_list; |
| 1891 | |
Josef Bacik | 2ab28f3 | 2012-10-12 15:27:49 -0400 | [diff] [blame] | 1892 | spinlock_t log_extents_lock[2]; |
| 1893 | struct list_head logged_list[2]; |
| 1894 | |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 1895 | spinlock_t orphan_lock; |
Josef Bacik | 8a35d95 | 2012-05-23 14:26:42 -0400 | [diff] [blame] | 1896 | atomic_t orphan_inodes; |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 1897 | struct btrfs_block_rsv *orphan_block_rsv; |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 1898 | int orphan_cleanup_state; |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1899 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1900 | spinlock_t inode_lock; |
| 1901 | /* red-black tree that keeps track of in-memory inodes */ |
| 1902 | struct rb_root inode_tree; |
| 1903 | |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1904 | /* |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1905 | * radix tree that keeps track of delayed nodes of every inode, |
| 1906 | * protected by inode_lock |
| 1907 | */ |
| 1908 | struct radix_tree_root delayed_nodes_tree; |
| 1909 | /* |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1910 | * right now this just gets used so that a root has its own devid |
| 1911 | * for stat. It may be used for more later |
| 1912 | */ |
Al Viro | 0ee5dc6 | 2011-07-07 15:44:25 -0400 | [diff] [blame] | 1913 | dev_t anon_dev; |
Liu Bo | f1ebcc7 | 2011-11-14 20:48:06 -0500 | [diff] [blame] | 1914 | |
Anand Jain | 5f3ab90 | 2012-12-07 09:28:54 +0000 | [diff] [blame] | 1915 | spinlock_t root_item_lock; |
Miao Xie | b0feb9d | 2013-05-15 07:48:20 +0000 | [diff] [blame] | 1916 | atomic_t refs; |
Miao Xie | eb73c1b | 2013-05-15 07:48:22 +0000 | [diff] [blame] | 1917 | |
Miao Xie | 573bfb7 | 2014-03-06 13:55:03 +0800 | [diff] [blame] | 1918 | struct mutex delalloc_mutex; |
Miao Xie | eb73c1b | 2013-05-15 07:48:22 +0000 | [diff] [blame] | 1919 | spinlock_t delalloc_lock; |
| 1920 | /* |
| 1921 | * all of the inodes that have delalloc bytes. It is possible for |
| 1922 | * this list to be empty even when there is still dirty data=ordered |
| 1923 | * extents waiting to finish IO. |
| 1924 | */ |
| 1925 | struct list_head delalloc_inodes; |
| 1926 | struct list_head delalloc_root; |
| 1927 | u64 nr_delalloc_inodes; |
Miao Xie | 31f3d25 | 2014-03-06 13:55:02 +0800 | [diff] [blame] | 1928 | |
| 1929 | struct mutex ordered_extent_mutex; |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 1930 | /* |
| 1931 | * this is used by the balancing code to wait for all the pending |
| 1932 | * ordered extents |
| 1933 | */ |
| 1934 | spinlock_t ordered_extent_lock; |
| 1935 | |
| 1936 | /* |
| 1937 | * all of the data=ordered extents pending writeback |
| 1938 | * these can span multiple transactions and basically include |
| 1939 | * every dirty data page that isn't from nodatacow |
| 1940 | */ |
| 1941 | struct list_head ordered_extents; |
| 1942 | struct list_head ordered_root; |
| 1943 | u64 nr_ordered_extents; |
David Sterba | 2c68653 | 2013-12-16 17:34:17 +0100 | [diff] [blame] | 1944 | |
| 1945 | /* |
| 1946 | * Number of currently running SEND ioctls to prevent |
| 1947 | * manipulation with the read-only status via SUBVOL_SETFLAGS |
| 1948 | */ |
| 1949 | int send_in_progress; |
Miao Xie | 8257b2d | 2014-03-06 13:38:19 +0800 | [diff] [blame] | 1950 | struct btrfs_subvolume_writers *subv_writers; |
| 1951 | atomic_t will_be_snapshoted; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1952 | }; |
| 1953 | |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 1954 | struct btrfs_ioctl_defrag_range_args { |
| 1955 | /* start of the defrag operation */ |
| 1956 | __u64 start; |
| 1957 | |
| 1958 | /* number of bytes to defrag, use (u64)-1 to say all */ |
| 1959 | __u64 len; |
| 1960 | |
| 1961 | /* |
| 1962 | * flags for the operation, which can include turning |
| 1963 | * on compression for this one defrag |
| 1964 | */ |
| 1965 | __u64 flags; |
| 1966 | |
| 1967 | /* |
| 1968 | * any extent bigger than this will be considered |
| 1969 | * already defragged. Use 0 to take the kernel default |
| 1970 | * Use 1 to say every single extent must be rewritten |
| 1971 | */ |
| 1972 | __u32 extent_thresh; |
| 1973 | |
| 1974 | /* |
| 1975 | * which compression method to use if turning on compression |
| 1976 | * for this defrag operation. If unspecified, zlib will |
| 1977 | * be used |
| 1978 | */ |
| 1979 | __u32 compress_type; |
| 1980 | |
| 1981 | /* spare for later */ |
| 1982 | __u32 unused[4]; |
| 1983 | }; |
| 1984 | |
| 1985 | |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1986 | /* |
| 1987 | * inode items have the data typically returned from stat and store other |
| 1988 | * info about object characteristics. There is one for every file and dir in |
| 1989 | * the FS |
| 1990 | */ |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1991 | #define BTRFS_INODE_ITEM_KEY 1 |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1992 | #define BTRFS_INODE_REF_KEY 12 |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 1993 | #define BTRFS_INODE_EXTREF_KEY 13 |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1994 | #define BTRFS_XATTR_ITEM_KEY 24 |
| 1995 | #define BTRFS_ORPHAN_ITEM_KEY 48 |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1996 | /* reserve 2-15 close to the inode for later flexibility */ |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1997 | |
| 1998 | /* |
| 1999 | * dir items are the name -> inode pointers in a directory. There is one |
| 2000 | * for every name in a directory. |
| 2001 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 2002 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
| 2003 | #define BTRFS_DIR_LOG_INDEX_KEY 72 |
| 2004 | #define BTRFS_DIR_ITEM_KEY 84 |
| 2005 | #define BTRFS_DIR_INDEX_KEY 96 |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2006 | /* |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2007 | * extent data is for file data |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2008 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 2009 | #define BTRFS_EXTENT_DATA_KEY 108 |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 2010 | |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2011 | /* |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 2012 | * extent csums are stored in a separate tree and hold csums for |
| 2013 | * an entire extent on disk. |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 2014 | */ |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 2015 | #define BTRFS_EXTENT_CSUM_KEY 128 |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 2016 | |
| 2017 | /* |
Wu Fengguang | d4a7894 | 2009-04-02 16:46:06 -0400 | [diff] [blame] | 2018 | * root items point to tree roots. They are typically in the root |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2019 | * tree used by the super block to find all the other trees |
| 2020 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 2021 | #define BTRFS_ROOT_ITEM_KEY 132 |
| 2022 | |
| 2023 | /* |
| 2024 | * root backrefs tie subvols and snapshots to the directory entries that |
| 2025 | * reference them |
| 2026 | */ |
| 2027 | #define BTRFS_ROOT_BACKREF_KEY 144 |
| 2028 | |
| 2029 | /* |
| 2030 | * root refs make a fast index for listing all of the snapshots and |
| 2031 | * subvolumes referenced by a given root. They point directly to the |
| 2032 | * directory item in the root that references the subvol |
| 2033 | */ |
| 2034 | #define BTRFS_ROOT_REF_KEY 156 |
| 2035 | |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2036 | /* |
| 2037 | * extent items are in the extent map tree. These record which blocks |
| 2038 | * are used, and how many references there are to each block |
| 2039 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 2040 | #define BTRFS_EXTENT_ITEM_KEY 168 |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2041 | |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 2042 | /* |
| 2043 | * The same as the BTRFS_EXTENT_ITEM_KEY, except it's metadata we already know |
| 2044 | * the length, so we save the level in key->offset instead of the length. |
| 2045 | */ |
| 2046 | #define BTRFS_METADATA_ITEM_KEY 169 |
| 2047 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2048 | #define BTRFS_TREE_BLOCK_REF_KEY 176 |
| 2049 | |
| 2050 | #define BTRFS_EXTENT_DATA_REF_KEY 178 |
| 2051 | |
| 2052 | #define BTRFS_EXTENT_REF_V0_KEY 180 |
| 2053 | |
| 2054 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 |
| 2055 | |
| 2056 | #define BTRFS_SHARED_DATA_REF_KEY 184 |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2057 | |
| 2058 | /* |
| 2059 | * block groups give us hints into the extent allocation trees. Which |
| 2060 | * blocks are free etc etc |
| 2061 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 2062 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 2063 | |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 2064 | #define BTRFS_DEV_EXTENT_KEY 204 |
| 2065 | #define BTRFS_DEV_ITEM_KEY 216 |
| 2066 | #define BTRFS_CHUNK_ITEM_KEY 228 |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2067 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 2068 | /* |
| 2069 | * Records the overall state of the qgroups. |
| 2070 | * There's only one instance of this key present, |
| 2071 | * (0, BTRFS_QGROUP_STATUS_KEY, 0) |
| 2072 | */ |
| 2073 | #define BTRFS_QGROUP_STATUS_KEY 240 |
| 2074 | /* |
| 2075 | * Records the currently used space of the qgroup. |
| 2076 | * One key per qgroup, (0, BTRFS_QGROUP_INFO_KEY, qgroupid). |
| 2077 | */ |
| 2078 | #define BTRFS_QGROUP_INFO_KEY 242 |
| 2079 | /* |
| 2080 | * Contains the user configured limits for the qgroup. |
| 2081 | * One key per qgroup, (0, BTRFS_QGROUP_LIMIT_KEY, qgroupid). |
| 2082 | */ |
| 2083 | #define BTRFS_QGROUP_LIMIT_KEY 244 |
| 2084 | /* |
| 2085 | * Records the child-parent relationship of qgroups. For |
| 2086 | * each relation, 2 keys are present: |
| 2087 | * (childid, BTRFS_QGROUP_RELATION_KEY, parentid) |
| 2088 | * (parentid, BTRFS_QGROUP_RELATION_KEY, childid) |
| 2089 | */ |
| 2090 | #define BTRFS_QGROUP_RELATION_KEY 246 |
| 2091 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2092 | #define BTRFS_BALANCE_ITEM_KEY 248 |
| 2093 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 2094 | /* |
Stefan Behrens | 733f4fb | 2012-05-25 16:06:10 +0200 | [diff] [blame] | 2095 | * Persistantly stores the io stats in the device tree. |
| 2096 | * One key for all stats, (0, BTRFS_DEV_STATS_KEY, devid). |
| 2097 | */ |
| 2098 | #define BTRFS_DEV_STATS_KEY 249 |
| 2099 | |
| 2100 | /* |
Stefan Behrens | a2bff64 | 2012-11-05 17:32:20 +0100 | [diff] [blame] | 2101 | * Persistantly stores the device replace state in the device tree. |
| 2102 | * The key is built like this: (0, BTRFS_DEV_REPLACE_KEY, 0). |
| 2103 | */ |
| 2104 | #define BTRFS_DEV_REPLACE_KEY 250 |
| 2105 | |
| 2106 | /* |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 2107 | * Stores items that allow to quickly map UUIDs to something else. |
| 2108 | * These items are part of the filesystem UUID tree. |
| 2109 | * The key is built like this: |
| 2110 | * (UUID_upper_64_bits, BTRFS_UUID_KEY*, UUID_lower_64_bits). |
| 2111 | */ |
| 2112 | #if BTRFS_UUID_SIZE != 16 |
| 2113 | #error "UUID items require BTRFS_UUID_SIZE == 16!" |
| 2114 | #endif |
| 2115 | #define BTRFS_UUID_KEY_SUBVOL 251 /* for UUIDs assigned to subvols */ |
| 2116 | #define BTRFS_UUID_KEY_RECEIVED_SUBVOL 252 /* for UUIDs assigned to |
| 2117 | * received subvols */ |
| 2118 | |
| 2119 | /* |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2120 | * string items are for debugging. They just store a short string of |
| 2121 | * data in the FS |
| 2122 | */ |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2123 | #define BTRFS_STRING_ITEM_KEY 253 |
| 2124 | |
David Sterba | 0942caa | 2011-06-28 15:10:37 +0000 | [diff] [blame] | 2125 | /* |
| 2126 | * Flags for mount options. |
| 2127 | * |
| 2128 | * Note: don't forget to add new options to btrfs_show_options() |
| 2129 | */ |
Chris Mason | 21ad10c | 2008-01-09 09:23:21 -0500 | [diff] [blame] | 2130 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
| 2131 | #define BTRFS_MOUNT_NODATACOW (1 << 1) |
| 2132 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) |
Chris Mason | e18e480 | 2008-01-18 10:54:22 -0500 | [diff] [blame] | 2133 | #define BTRFS_MOUNT_SSD (1 << 3) |
Chris Mason | dfe2502 | 2008-05-13 13:46:40 -0400 | [diff] [blame] | 2134 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 2135 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
Sage Weil | 3a5e140 | 2009-04-02 16:49:40 -0400 | [diff] [blame] | 2136 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
Sage Weil | dccae99 | 2009-04-02 16:59:01 -0400 | [diff] [blame] | 2137 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
Chris Mason | 451d758 | 2009-06-09 20:28:34 -0400 | [diff] [blame] | 2138 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
Chris Mason | c289811 | 2009-06-10 09:51:32 -0400 | [diff] [blame] | 2139 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
Christoph Hellwig | e244a0a | 2009-10-14 09:24:59 -0400 | [diff] [blame] | 2140 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
Chris Mason | a555f81 | 2010-01-28 16:18:15 -0500 | [diff] [blame] | 2141 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 2142 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
Josef Bacik | 88c2ba3 | 2010-09-21 14:21:34 -0400 | [diff] [blame] | 2143 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
Sage Weil | 4260f7c | 2010-10-29 15:46:43 -0400 | [diff] [blame] | 2144 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
Chris Mason | 9143565 | 2011-02-16 13:10:41 -0500 | [diff] [blame] | 2145 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 2146 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
Chris Mason | 4b9465c | 2011-06-03 09:36:29 -0400 | [diff] [blame] | 2147 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 2148 | #define BTRFS_MOUNT_RECOVERY (1 << 18) |
Ilya Dryomov | 9555c6c | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2149 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
Chris Mason | c126dea | 2012-01-16 15:27:58 -0500 | [diff] [blame] | 2150 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
| 2151 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) |
Jeff Mahoney | 8c34293 | 2011-10-03 23:22:31 -0400 | [diff] [blame] | 2152 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
Stefan Behrens | f420ee1 | 2013-08-15 17:11:24 +0200 | [diff] [blame] | 2153 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
Chris Mason | b6cda9b | 2007-12-14 15:30:32 -0500 | [diff] [blame] | 2154 | |
David Sterba | 8b87dc1 | 2013-08-01 18:14:52 +0200 | [diff] [blame] | 2155 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
Filipe David Borba Manana | 95ac567 | 2013-08-08 22:45:48 +0100 | [diff] [blame] | 2156 | #define BTRFS_DEFAULT_MAX_INLINE (8192) |
David Sterba | 8b87dc1 | 2013-08-01 18:14:52 +0200 | [diff] [blame] | 2157 | |
Chris Mason | b6cda9b | 2007-12-14 15:30:32 -0500 | [diff] [blame] | 2158 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
| 2159 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) |
Miao Xie | dc81cdc | 2013-02-20 23:32:52 -0700 | [diff] [blame] | 2160 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
Chris Mason | b6cda9b | 2007-12-14 15:30:32 -0500 | [diff] [blame] | 2161 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ |
| 2162 | BTRFS_MOUNT_##opt) |
David Sterba | 572d9ab | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 2163 | |
Wang Shilong | 9d89ce6 | 2014-04-23 19:33:33 +0800 | [diff] [blame] | 2164 | #define btrfs_set_and_info(root, opt, fmt, args...) \ |
| 2165 | { \ |
| 2166 | if (!btrfs_test_opt(root, opt)) \ |
| 2167 | btrfs_info(root->fs_info, fmt, ##args); \ |
| 2168 | btrfs_set_opt(root->fs_info->mount_opt, opt); \ |
| 2169 | } |
| 2170 | |
| 2171 | #define btrfs_clear_and_info(root, opt, fmt, args...) \ |
| 2172 | { \ |
| 2173 | if (btrfs_test_opt(root, opt)) \ |
| 2174 | btrfs_info(root->fs_info, fmt, ##args); \ |
| 2175 | btrfs_clear_opt(root->fs_info->mount_opt, opt); \ |
| 2176 | } |
| 2177 | |
Yan | b98b676 | 2008-01-08 15:54:37 -0500 | [diff] [blame] | 2178 | /* |
David Sterba | 572d9ab | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 2179 | * Requests for changes that need to be done during transaction commit. |
| 2180 | * |
| 2181 | * Internal mount options that are used for special handling of the real |
| 2182 | * mount options (eg. cannot be set during remount and have to be set during |
| 2183 | * transaction commit) |
| 2184 | */ |
| 2185 | |
David Sterba | 7e1876a | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 2186 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
| 2187 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) |
David Sterba | d51033d | 2014-11-12 14:24:35 +0100 | [diff] [blame] | 2188 | #define BTRFS_PENDING_COMMIT (2) |
David Sterba | 7e1876a | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 2189 | |
David Sterba | 572d9ab | 2014-02-05 15:26:17 +0100 | [diff] [blame] | 2190 | #define btrfs_test_pending(info, opt) \ |
| 2191 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) |
| 2192 | #define btrfs_set_pending(info, opt) \ |
| 2193 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) |
| 2194 | #define btrfs_clear_pending(info, opt) \ |
| 2195 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) |
| 2196 | |
| 2197 | /* |
| 2198 | * Helpers for setting pending mount option changes. |
| 2199 | * |
| 2200 | * Expects corresponding macros |
| 2201 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name |
| 2202 | */ |
| 2203 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ |
| 2204 | do { \ |
| 2205 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ |
| 2206 | btrfs_info((info), fmt, ##args); \ |
| 2207 | btrfs_set_pending((info), SET_##opt); \ |
| 2208 | btrfs_clear_pending((info), CLEAR_##opt); \ |
| 2209 | } \ |
| 2210 | } while(0) |
| 2211 | |
| 2212 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ |
| 2213 | do { \ |
| 2214 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ |
| 2215 | btrfs_info((info), fmt, ##args); \ |
| 2216 | btrfs_set_pending((info), CLEAR_##opt); \ |
| 2217 | btrfs_clear_pending((info), SET_##opt); \ |
| 2218 | } \ |
| 2219 | } while(0) |
| 2220 | |
| 2221 | /* |
Yan | b98b676 | 2008-01-08 15:54:37 -0500 | [diff] [blame] | 2222 | * Inode flags |
| 2223 | */ |
Yan | fdebe2b | 2008-01-14 13:26:08 -0500 | [diff] [blame] | 2224 | #define BTRFS_INODE_NODATASUM (1 << 0) |
| 2225 | #define BTRFS_INODE_NODATACOW (1 << 1) |
| 2226 | #define BTRFS_INODE_READONLY (1 << 2) |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 2227 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 2228 | #define BTRFS_INODE_PREALLOC (1 << 4) |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 2229 | #define BTRFS_INODE_SYNC (1 << 5) |
| 2230 | #define BTRFS_INODE_IMMUTABLE (1 << 6) |
| 2231 | #define BTRFS_INODE_APPEND (1 << 7) |
| 2232 | #define BTRFS_INODE_NODUMP (1 << 8) |
| 2233 | #define BTRFS_INODE_NOATIME (1 << 9) |
| 2234 | #define BTRFS_INODE_DIRSYNC (1 << 10) |
Liu Bo | 75e7cb7 | 2011-03-22 10:12:20 +0000 | [diff] [blame] | 2235 | #define BTRFS_INODE_COMPRESS (1 << 11) |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 2236 | |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 2237 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
| 2238 | |
Chris Mason | cfed81a | 2012-03-03 07:40:03 -0500 | [diff] [blame] | 2239 | struct btrfs_map_token { |
| 2240 | struct extent_buffer *eb; |
| 2241 | char *kaddr; |
| 2242 | unsigned long offset; |
| 2243 | }; |
| 2244 | |
| 2245 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
| 2246 | { |
Josef Bacik | ad91455 | 2012-10-15 13:39:33 -0400 | [diff] [blame] | 2247 | token->kaddr = NULL; |
Chris Mason | cfed81a | 2012-03-03 07:40:03 -0500 | [diff] [blame] | 2248 | } |
| 2249 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2250 | /* some macros to generate set/get funcs for the struct fields. This |
| 2251 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
| 2252 | * one for u8: |
| 2253 | */ |
| 2254 | #define le8_to_cpu(v) (v) |
| 2255 | #define cpu_to_le8(v) (v) |
| 2256 | #define __le8 u8 |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2257 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2258 | #define read_eb_member(eb, ptr, type, member, result) ( \ |
| 2259 | read_extent_buffer(eb, (char *)(result), \ |
| 2260 | ((unsigned long)(ptr)) + \ |
| 2261 | offsetof(type, member), \ |
| 2262 | sizeof(((type *)0)->member))) |
| 2263 | |
| 2264 | #define write_eb_member(eb, ptr, type, member, result) ( \ |
| 2265 | write_extent_buffer(eb, (char *)(result), \ |
| 2266 | ((unsigned long)(ptr)) + \ |
| 2267 | offsetof(type, member), \ |
| 2268 | sizeof(((type *)0)->member))) |
| 2269 | |
Li Zefan | 18077bb | 2012-07-09 20:22:35 -0600 | [diff] [blame] | 2270 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
| 2271 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ |
| 2272 | unsigned long off, \ |
| 2273 | struct btrfs_map_token *token); \ |
| 2274 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ |
| 2275 | unsigned long off, u##bits val, \ |
| 2276 | struct btrfs_map_token *token); \ |
| 2277 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ |
| 2278 | unsigned long off) \ |
| 2279 | { \ |
| 2280 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ |
| 2281 | } \ |
| 2282 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ |
| 2283 | unsigned long off, u##bits val) \ |
| 2284 | { \ |
| 2285 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ |
| 2286 | } |
| 2287 | |
| 2288 | DECLARE_BTRFS_SETGET_BITS(8) |
| 2289 | DECLARE_BTRFS_SETGET_BITS(16) |
| 2290 | DECLARE_BTRFS_SETGET_BITS(32) |
| 2291 | DECLARE_BTRFS_SETGET_BITS(64) |
| 2292 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2293 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
Li Zefan | 18077bb | 2012-07-09 20:22:35 -0600 | [diff] [blame] | 2294 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
| 2295 | { \ |
| 2296 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 2297 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ |
| 2298 | } \ |
| 2299 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ |
| 2300 | u##bits val) \ |
| 2301 | { \ |
| 2302 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 2303 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ |
| 2304 | } \ |
| 2305 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ |
| 2306 | struct btrfs_map_token *token) \ |
| 2307 | { \ |
| 2308 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 2309 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ |
| 2310 | } \ |
| 2311 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ |
| 2312 | type *s, u##bits val, \ |
| 2313 | struct btrfs_map_token *token) \ |
| 2314 | { \ |
| 2315 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 2316 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ |
| 2317 | } |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2318 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2319 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ |
| 2320 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ |
| 2321 | { \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 2322 | type *p = page_address(eb->pages[0]); \ |
David Miller | df68b8a | 2008-02-15 10:40:52 -0500 | [diff] [blame] | 2323 | u##bits res = le##bits##_to_cpu(p->member); \ |
Chris Mason | 810191f | 2007-10-15 16:18:55 -0400 | [diff] [blame] | 2324 | return res; \ |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2325 | } \ |
| 2326 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ |
| 2327 | u##bits val) \ |
| 2328 | { \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 2329 | type *p = page_address(eb->pages[0]); \ |
David Miller | df68b8a | 2008-02-15 10:40:52 -0500 | [diff] [blame] | 2330 | p->member = cpu_to_le##bits(val); \ |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2331 | } |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2332 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2333 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
| 2334 | static inline u##bits btrfs_##name(type *s) \ |
| 2335 | { \ |
| 2336 | return le##bits##_to_cpu(s->member); \ |
| 2337 | } \ |
| 2338 | static inline void btrfs_set_##name(type *s, u##bits val) \ |
| 2339 | { \ |
| 2340 | s->member = cpu_to_le##bits(val); \ |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2341 | } |
| 2342 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2343 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
| 2344 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); |
| 2345 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
| 2346 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); |
| 2347 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 2348 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
| 2349 | start_offset, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2350 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
| 2351 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2352 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
| 2353 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); |
| 2354 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 2355 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2356 | |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 2357 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
| 2358 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, |
| 2359 | total_bytes, 64); |
| 2360 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, |
| 2361 | bytes_used, 64); |
| 2362 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, |
| 2363 | io_align, 32); |
| 2364 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, |
| 2365 | io_width, 32); |
| 2366 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, |
| 2367 | sector_size, 32); |
| 2368 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2369 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
| 2370 | dev_group, 32); |
| 2371 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, |
| 2372 | seek_speed, 8); |
| 2373 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, |
| 2374 | bandwidth, 8); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 2375 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
| 2376 | generation, 64); |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 2377 | |
Geert Uytterhoeven | 410ba3a | 2013-08-20 13:20:11 +0200 | [diff] [blame] | 2378 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2379 | { |
Geert Uytterhoeven | 410ba3a | 2013-08-20 13:20:11 +0200 | [diff] [blame] | 2380 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2381 | } |
| 2382 | |
Geert Uytterhoeven | 1473b24 | 2013-08-20 13:20:12 +0200 | [diff] [blame] | 2383 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 2384 | { |
Geert Uytterhoeven | 1473b24 | 2013-08-20 13:20:12 +0200 | [diff] [blame] | 2385 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 2386 | } |
| 2387 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2388 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2389 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
| 2390 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); |
| 2391 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); |
| 2392 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); |
| 2393 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); |
| 2394 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); |
| 2395 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); |
Chris Mason | 321aecc | 2008-04-16 10:49:51 -0400 | [diff] [blame] | 2396 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2397 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
| 2398 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); |
| 2399 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2400 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
| 2401 | { |
| 2402 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); |
| 2403 | } |
| 2404 | |
| 2405 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2406 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
| 2407 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, |
| 2408 | stripe_len, 64); |
| 2409 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, |
| 2410 | io_align, 32); |
| 2411 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, |
| 2412 | io_width, 32); |
| 2413 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, |
| 2414 | sector_size, 32); |
| 2415 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); |
| 2416 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, |
| 2417 | num_stripes, 16); |
Chris Mason | 321aecc | 2008-04-16 10:49:51 -0400 | [diff] [blame] | 2418 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
| 2419 | sub_stripes, 16); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2420 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
| 2421 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); |
| 2422 | |
| 2423 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, |
| 2424 | int nr) |
| 2425 | { |
| 2426 | unsigned long offset = (unsigned long)c; |
| 2427 | offset += offsetof(struct btrfs_chunk, stripe); |
| 2428 | offset += nr * sizeof(struct btrfs_stripe); |
| 2429 | return (struct btrfs_stripe *)offset; |
| 2430 | } |
| 2431 | |
Chris Mason | a443755 | 2008-04-18 10:29:38 -0400 | [diff] [blame] | 2432 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
| 2433 | { |
| 2434 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); |
| 2435 | } |
| 2436 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2437 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
| 2438 | struct btrfs_chunk *c, int nr) |
| 2439 | { |
| 2440 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); |
| 2441 | } |
| 2442 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2443 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
| 2444 | struct btrfs_chunk *c, int nr) |
| 2445 | { |
| 2446 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); |
| 2447 | } |
| 2448 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2449 | /* struct btrfs_block_group_item */ |
| 2450 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, |
| 2451 | used, 64); |
| 2452 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, |
| 2453 | used, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2454 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
| 2455 | struct btrfs_block_group_item, chunk_objectid, 64); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2456 | |
| 2457 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2458 | struct btrfs_block_group_item, chunk_objectid, 64); |
| 2459 | BTRFS_SETGET_FUNCS(disk_block_group_flags, |
| 2460 | struct btrfs_block_group_item, flags, 64); |
| 2461 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, |
| 2462 | struct btrfs_block_group_item, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2463 | |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 2464 | /* struct btrfs_inode_ref */ |
| 2465 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 2466 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 2467 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 2468 | /* struct btrfs_inode_extref */ |
| 2469 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, |
| 2470 | parent_objectid, 64); |
| 2471 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, |
| 2472 | name_len, 16); |
| 2473 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); |
| 2474 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2475 | /* struct btrfs_inode_item */ |
| 2476 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 2477 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2478 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2479 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
Yan Zheng | a76a3cd | 2008-10-09 11:46:29 -0400 | [diff] [blame] | 2480 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2481 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
| 2482 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); |
| 2483 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); |
| 2484 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); |
| 2485 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2486 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2487 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2488 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
| 2489 | generation, 64); |
| 2490 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, |
| 2491 | sequence, 64); |
| 2492 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, |
| 2493 | transid, 64); |
| 2494 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); |
| 2495 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, |
| 2496 | nbytes, 64); |
| 2497 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, |
| 2498 | block_group, 64); |
| 2499 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); |
| 2500 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); |
| 2501 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); |
| 2502 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); |
| 2503 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); |
| 2504 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2505 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
| 2506 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2507 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
| 2508 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2509 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2510 | /* struct btrfs_dev_extent */ |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2511 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
| 2512 | chunk_tree, 64); |
| 2513 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, |
| 2514 | chunk_objectid, 64); |
| 2515 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, |
| 2516 | chunk_offset, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2517 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
| 2518 | |
Geert Uytterhoeven | 231e88f | 2013-08-20 13:20:13 +0200 | [diff] [blame] | 2519 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2520 | { |
| 2521 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); |
Geert Uytterhoeven | 231e88f | 2013-08-20 13:20:13 +0200 | [diff] [blame] | 2522 | return (unsigned long)dev + ptr; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2523 | } |
| 2524 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2525 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
| 2526 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, |
| 2527 | generation, 64); |
| 2528 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 2529 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2530 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2531 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2532 | |
| 2533 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); |
| 2534 | |
| 2535 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, |
| 2536 | struct btrfs_tree_block_info *item, |
| 2537 | struct btrfs_disk_key *key) |
| 2538 | { |
| 2539 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
| 2540 | } |
| 2541 | |
| 2542 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, |
| 2543 | struct btrfs_tree_block_info *item, |
| 2544 | struct btrfs_disk_key *key) |
| 2545 | { |
| 2546 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
| 2547 | } |
| 2548 | |
| 2549 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
| 2550 | root, 64); |
| 2551 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, |
| 2552 | objectid, 64); |
| 2553 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, |
| 2554 | offset, 64); |
| 2555 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, |
| 2556 | count, 32); |
| 2557 | |
| 2558 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, |
| 2559 | count, 32); |
| 2560 | |
| 2561 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, |
| 2562 | type, 8); |
| 2563 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, |
| 2564 | offset, 64); |
| 2565 | |
| 2566 | static inline u32 btrfs_extent_inline_ref_size(int type) |
| 2567 | { |
| 2568 | if (type == BTRFS_TREE_BLOCK_REF_KEY || |
| 2569 | type == BTRFS_SHARED_BLOCK_REF_KEY) |
| 2570 | return sizeof(struct btrfs_extent_inline_ref); |
| 2571 | if (type == BTRFS_SHARED_DATA_REF_KEY) |
| 2572 | return sizeof(struct btrfs_shared_data_ref) + |
| 2573 | sizeof(struct btrfs_extent_inline_ref); |
| 2574 | if (type == BTRFS_EXTENT_DATA_REF_KEY) |
| 2575 | return sizeof(struct btrfs_extent_data_ref) + |
| 2576 | offsetof(struct btrfs_extent_inline_ref, offset); |
| 2577 | BUG(); |
| 2578 | return 0; |
| 2579 | } |
| 2580 | |
| 2581 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); |
| 2582 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, |
| 2583 | generation, 64); |
| 2584 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); |
| 2585 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2586 | |
| 2587 | /* struct btrfs_node */ |
| 2588 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 2589 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2590 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
| 2591 | blockptr, 64); |
| 2592 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, |
| 2593 | generation, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2594 | |
| 2595 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2596 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2597 | unsigned long ptr; |
| 2598 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2599 | sizeof(struct btrfs_key_ptr) * nr; |
| 2600 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2601 | } |
| 2602 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2603 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
| 2604 | int nr, u64 val) |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2605 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2606 | unsigned long ptr; |
| 2607 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2608 | sizeof(struct btrfs_key_ptr) * nr; |
| 2609 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2610 | } |
| 2611 | |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 2612 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
| 2613 | { |
| 2614 | unsigned long ptr; |
| 2615 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2616 | sizeof(struct btrfs_key_ptr) * nr; |
| 2617 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); |
| 2618 | } |
| 2619 | |
| 2620 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, |
| 2621 | int nr, u64 val) |
| 2622 | { |
| 2623 | unsigned long ptr; |
| 2624 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2625 | sizeof(struct btrfs_key_ptr) * nr; |
| 2626 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); |
| 2627 | } |
| 2628 | |
Chris Mason | 810191f | 2007-10-15 16:18:55 -0400 | [diff] [blame] | 2629 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2630 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2631 | return offsetof(struct btrfs_node, ptrs) + |
| 2632 | sizeof(struct btrfs_key_ptr) * nr; |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2633 | } |
| 2634 | |
Chris Mason | e644d02 | 2007-11-06 15:09:29 -0500 | [diff] [blame] | 2635 | void btrfs_node_key(struct extent_buffer *eb, |
| 2636 | struct btrfs_disk_key *disk_key, int nr); |
| 2637 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2638 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
| 2639 | struct btrfs_disk_key *disk_key, int nr) |
| 2640 | { |
| 2641 | unsigned long ptr; |
| 2642 | ptr = btrfs_node_key_ptr_offset(nr); |
| 2643 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, |
| 2644 | struct btrfs_key_ptr, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2645 | } |
| 2646 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2647 | /* struct btrfs_item */ |
| 2648 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); |
| 2649 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2650 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
| 2651 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2652 | |
| 2653 | static inline unsigned long btrfs_item_nr_offset(int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2654 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2655 | return offsetof(struct btrfs_leaf, items) + |
| 2656 | sizeof(struct btrfs_item) * nr; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2657 | } |
| 2658 | |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2659 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2660 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2661 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2662 | } |
| 2663 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2664 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
| 2665 | struct btrfs_item *item) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2666 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2667 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2668 | } |
| 2669 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2670 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2671 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2672 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2673 | } |
| 2674 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2675 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2676 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2677 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2678 | } |
| 2679 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2680 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2681 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2682 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2683 | } |
| 2684 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2685 | static inline void btrfs_item_key(struct extent_buffer *eb, |
| 2686 | struct btrfs_disk_key *disk_key, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2687 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2688 | struct btrfs_item *item = btrfs_item_nr(nr); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2689 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2690 | } |
| 2691 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2692 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
| 2693 | struct btrfs_disk_key *disk_key, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2694 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2695 | struct btrfs_item *item = btrfs_item_nr(nr); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2696 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2697 | } |
| 2698 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2699 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
| 2700 | |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 2701 | /* |
| 2702 | * struct btrfs_root_ref |
| 2703 | */ |
| 2704 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); |
| 2705 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); |
| 2706 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); |
| 2707 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2708 | /* struct btrfs_dir_item */ |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 2709 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2710 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
| 2711 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2712 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2713 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
| 2714 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, |
| 2715 | data_len, 16); |
| 2716 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, |
| 2717 | name_len, 16); |
| 2718 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, |
| 2719 | transid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2720 | |
| 2721 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
| 2722 | struct btrfs_dir_item *item, |
| 2723 | struct btrfs_disk_key *key) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2724 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2725 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2726 | } |
| 2727 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2728 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
| 2729 | struct btrfs_dir_item *item, |
| 2730 | struct btrfs_disk_key *key) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2731 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2732 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2733 | } |
| 2734 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 2735 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
| 2736 | num_entries, 64); |
| 2737 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, |
| 2738 | num_bitmaps, 64); |
| 2739 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, |
| 2740 | generation, 64); |
| 2741 | |
| 2742 | static inline void btrfs_free_space_key(struct extent_buffer *eb, |
| 2743 | struct btrfs_free_space_header *h, |
| 2744 | struct btrfs_disk_key *key) |
| 2745 | { |
| 2746 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); |
| 2747 | } |
| 2748 | |
| 2749 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, |
| 2750 | struct btrfs_free_space_header *h, |
| 2751 | struct btrfs_disk_key *key) |
| 2752 | { |
| 2753 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); |
| 2754 | } |
| 2755 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2756 | /* struct btrfs_disk_key */ |
| 2757 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, |
| 2758 | objectid, 64); |
| 2759 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); |
| 2760 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); |
Chris Mason | 1d4f640 | 2007-03-15 15:18:43 -0400 | [diff] [blame] | 2761 | |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2762 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
| 2763 | struct btrfs_disk_key *disk) |
| 2764 | { |
| 2765 | cpu->offset = le64_to_cpu(disk->offset); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2766 | cpu->type = disk->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2767 | cpu->objectid = le64_to_cpu(disk->objectid); |
| 2768 | } |
| 2769 | |
| 2770 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, |
| 2771 | struct btrfs_key *cpu) |
| 2772 | { |
| 2773 | disk->offset = cpu_to_le64(cpu->offset); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2774 | disk->type = cpu->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2775 | disk->objectid = cpu_to_le64(cpu->objectid); |
| 2776 | } |
| 2777 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2778 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
| 2779 | struct btrfs_key *key, int nr) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2780 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2781 | struct btrfs_disk_key disk_key; |
| 2782 | btrfs_node_key(eb, &disk_key, nr); |
| 2783 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2784 | } |
| 2785 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2786 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
| 2787 | struct btrfs_key *key, int nr) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2788 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2789 | struct btrfs_disk_key disk_key; |
| 2790 | btrfs_item_key(eb, &disk_key, nr); |
| 2791 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2792 | } |
| 2793 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2794 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
| 2795 | struct btrfs_dir_item *item, |
| 2796 | struct btrfs_key *key) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2797 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2798 | struct btrfs_disk_key disk_key; |
| 2799 | btrfs_dir_item_key(eb, item, &disk_key); |
| 2800 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2801 | } |
| 2802 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2803 | |
| 2804 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2805 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2806 | return key->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2807 | } |
| 2808 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2809 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2810 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2811 | key->type = val; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2812 | } |
| 2813 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2814 | /* struct btrfs_header */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2815 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2816 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
| 2817 | generation, 64); |
| 2818 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); |
| 2819 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 2820 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2821 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2822 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
| 2823 | generation, 64); |
| 2824 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); |
| 2825 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, |
| 2826 | nritems, 32); |
| 2827 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2828 | |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 2829 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
| 2830 | { |
| 2831 | return (btrfs_header_flags(eb) & flag) == flag; |
| 2832 | } |
| 2833 | |
| 2834 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) |
| 2835 | { |
| 2836 | u64 flags = btrfs_header_flags(eb); |
| 2837 | btrfs_set_header_flags(eb, flags | flag); |
| 2838 | return (flags & flag) == flag; |
| 2839 | } |
| 2840 | |
| 2841 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) |
| 2842 | { |
| 2843 | u64 flags = btrfs_header_flags(eb); |
| 2844 | btrfs_set_header_flags(eb, flags & ~flag); |
| 2845 | return (flags & flag) == flag; |
| 2846 | } |
| 2847 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2848 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
| 2849 | { |
| 2850 | u64 flags = btrfs_header_flags(eb); |
| 2851 | return flags >> BTRFS_BACKREF_REV_SHIFT; |
| 2852 | } |
| 2853 | |
| 2854 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, |
| 2855 | int rev) |
| 2856 | { |
| 2857 | u64 flags = btrfs_header_flags(eb); |
| 2858 | flags &= ~BTRFS_BACKREF_REV_MASK; |
| 2859 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; |
| 2860 | btrfs_set_header_flags(eb, flags); |
| 2861 | } |
| 2862 | |
Ross Kirk | 0a4e558 | 2013-09-24 10:12:38 +0100 | [diff] [blame] | 2863 | static inline unsigned long btrfs_header_fsid(void) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2864 | { |
Geert Uytterhoeven | fba6aa7 | 2013-08-20 13:20:14 +0200 | [diff] [blame] | 2865 | return offsetof(struct btrfs_header, fsid); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2866 | } |
| 2867 | |
Geert Uytterhoeven | b308bc2 | 2013-08-20 13:20:15 +0200 | [diff] [blame] | 2868 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2869 | { |
Geert Uytterhoeven | b308bc2 | 2013-08-20 13:20:15 +0200 | [diff] [blame] | 2870 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2871 | } |
| 2872 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2873 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
Chris Mason | 7518a23 | 2007-03-12 12:01:18 -0400 | [diff] [blame] | 2874 | { |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 2875 | return btrfs_header_level(eb) == 0; |
Chris Mason | 7518a23 | 2007-03-12 12:01:18 -0400 | [diff] [blame] | 2876 | } |
| 2877 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2878 | /* struct btrfs_root_item */ |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2879 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
| 2880 | generation, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2881 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2882 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
| 2883 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2884 | |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2885 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
| 2886 | generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2887 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
| 2888 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2889 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
| 2890 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2891 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2892 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
| 2893 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); |
Yan Zheng | 80ff385 | 2008-10-30 14:20:02 -0400 | [diff] [blame] | 2894 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
| 2895 | last_snapshot, 64); |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 2896 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
| 2897 | generation_v2, 64); |
| 2898 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, |
| 2899 | ctransid, 64); |
| 2900 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, |
| 2901 | otransid, 64); |
| 2902 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, |
| 2903 | stransid, 64); |
| 2904 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, |
| 2905 | rtransid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2906 | |
Li Zefan | b83cc96 | 2010-12-20 16:04:08 +0800 | [diff] [blame] | 2907 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
| 2908 | { |
Al Viro | 6ed3cf2 | 2012-04-13 11:49:04 -0400 | [diff] [blame] | 2909 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
Li Zefan | b83cc96 | 2010-12-20 16:04:08 +0800 | [diff] [blame] | 2910 | } |
| 2911 | |
David Sterba | 521e054 | 2014-04-15 16:41:44 +0200 | [diff] [blame] | 2912 | static inline bool btrfs_root_dead(struct btrfs_root *root) |
| 2913 | { |
| 2914 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; |
| 2915 | } |
| 2916 | |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 2917 | /* struct btrfs_root_backup */ |
| 2918 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, |
| 2919 | tree_root, 64); |
| 2920 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, |
| 2921 | tree_root_gen, 64); |
| 2922 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, |
| 2923 | tree_root_level, 8); |
| 2924 | |
| 2925 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, |
| 2926 | chunk_root, 64); |
| 2927 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, |
| 2928 | chunk_root_gen, 64); |
| 2929 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, |
| 2930 | chunk_root_level, 8); |
| 2931 | |
| 2932 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, |
| 2933 | extent_root, 64); |
| 2934 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, |
| 2935 | extent_root_gen, 64); |
| 2936 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, |
| 2937 | extent_root_level, 8); |
| 2938 | |
| 2939 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, |
| 2940 | fs_root, 64); |
| 2941 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, |
| 2942 | fs_root_gen, 64); |
| 2943 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, |
| 2944 | fs_root_level, 8); |
| 2945 | |
| 2946 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, |
| 2947 | dev_root, 64); |
| 2948 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, |
| 2949 | dev_root_gen, 64); |
| 2950 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, |
| 2951 | dev_root_level, 8); |
| 2952 | |
| 2953 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, |
| 2954 | csum_root, 64); |
| 2955 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, |
| 2956 | csum_root_gen, 64); |
| 2957 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, |
| 2958 | csum_root_level, 8); |
| 2959 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, |
| 2960 | total_bytes, 64); |
| 2961 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, |
| 2962 | bytes_used, 64); |
| 2963 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, |
| 2964 | num_devices, 64); |
| 2965 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2966 | /* struct btrfs_balance_item */ |
| 2967 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2968 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2969 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
| 2970 | struct btrfs_balance_item *bi, |
| 2971 | struct btrfs_disk_balance_args *ba) |
| 2972 | { |
| 2973 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); |
| 2974 | } |
| 2975 | |
| 2976 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, |
| 2977 | struct btrfs_balance_item *bi, |
| 2978 | struct btrfs_disk_balance_args *ba) |
| 2979 | { |
| 2980 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); |
| 2981 | } |
| 2982 | |
| 2983 | static inline void btrfs_balance_meta(struct extent_buffer *eb, |
| 2984 | struct btrfs_balance_item *bi, |
| 2985 | struct btrfs_disk_balance_args *ba) |
| 2986 | { |
| 2987 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); |
| 2988 | } |
| 2989 | |
| 2990 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, |
| 2991 | struct btrfs_balance_item *bi, |
| 2992 | struct btrfs_disk_balance_args *ba) |
| 2993 | { |
| 2994 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); |
| 2995 | } |
| 2996 | |
| 2997 | static inline void btrfs_balance_sys(struct extent_buffer *eb, |
| 2998 | struct btrfs_balance_item *bi, |
| 2999 | struct btrfs_disk_balance_args *ba) |
| 3000 | { |
| 3001 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); |
| 3002 | } |
| 3003 | |
| 3004 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, |
| 3005 | struct btrfs_balance_item *bi, |
| 3006 | struct btrfs_disk_balance_args *ba) |
| 3007 | { |
| 3008 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); |
| 3009 | } |
| 3010 | |
| 3011 | static inline void |
| 3012 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, |
| 3013 | struct btrfs_disk_balance_args *disk) |
| 3014 | { |
| 3015 | memset(cpu, 0, sizeof(*cpu)); |
| 3016 | |
| 3017 | cpu->profiles = le64_to_cpu(disk->profiles); |
| 3018 | cpu->usage = le64_to_cpu(disk->usage); |
| 3019 | cpu->devid = le64_to_cpu(disk->devid); |
| 3020 | cpu->pstart = le64_to_cpu(disk->pstart); |
| 3021 | cpu->pend = le64_to_cpu(disk->pend); |
| 3022 | cpu->vstart = le64_to_cpu(disk->vstart); |
| 3023 | cpu->vend = le64_to_cpu(disk->vend); |
| 3024 | cpu->target = le64_to_cpu(disk->target); |
| 3025 | cpu->flags = le64_to_cpu(disk->flags); |
David Sterba | 7d824b6 | 2014-05-07 17:37:51 +0200 | [diff] [blame] | 3026 | cpu->limit = le64_to_cpu(disk->limit); |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 3027 | } |
| 3028 | |
| 3029 | static inline void |
| 3030 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, |
| 3031 | struct btrfs_balance_args *cpu) |
| 3032 | { |
| 3033 | memset(disk, 0, sizeof(*disk)); |
| 3034 | |
| 3035 | disk->profiles = cpu_to_le64(cpu->profiles); |
| 3036 | disk->usage = cpu_to_le64(cpu->usage); |
| 3037 | disk->devid = cpu_to_le64(cpu->devid); |
| 3038 | disk->pstart = cpu_to_le64(cpu->pstart); |
| 3039 | disk->pend = cpu_to_le64(cpu->pend); |
| 3040 | disk->vstart = cpu_to_le64(cpu->vstart); |
| 3041 | disk->vend = cpu_to_le64(cpu->vend); |
| 3042 | disk->target = cpu_to_le64(cpu->target); |
| 3043 | disk->flags = cpu_to_le64(cpu->flags); |
David Sterba | 7d824b6 | 2014-05-07 17:37:51 +0200 | [diff] [blame] | 3044 | disk->limit = cpu_to_le64(cpu->limit); |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 3045 | } |
| 3046 | |
| 3047 | /* struct btrfs_super_block */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3048 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
Chris Mason | a061fc8 | 2008-05-07 11:43:44 -0400 | [diff] [blame] | 3049 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3050 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
| 3051 | generation, 64); |
| 3052 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 3053 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
| 3054 | struct btrfs_super_block, sys_chunk_array_size, 32); |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 3055 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
| 3056 | struct btrfs_super_block, chunk_root_generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3057 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
| 3058 | root_level, 8); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 3059 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
| 3060 | chunk_root, 64); |
| 3061 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3062 | chunk_root_level, 8); |
| 3063 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, |
| 3064 | log_root, 64); |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 3065 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
| 3066 | log_root_transid, 64); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3067 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
| 3068 | log_root_level, 8); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3069 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
| 3070 | total_bytes, 64); |
| 3071 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, |
| 3072 | bytes_used, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3073 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
| 3074 | sectorsize, 32); |
| 3075 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, |
| 3076 | nodesize, 32); |
Chris Mason | 87ee04e | 2007-11-30 11:30:34 -0500 | [diff] [blame] | 3077 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
| 3078 | stripesize, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3079 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
| 3080 | root_dir_objectid, 64); |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 3081 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
| 3082 | num_devices, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 3083 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
| 3084 | compat_flags, 64); |
| 3085 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, |
Josef Bacik | 1253483 | 2009-12-17 21:32:27 +0000 | [diff] [blame] | 3086 | compat_ro_flags, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 3087 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
| 3088 | incompat_flags, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 3089 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
| 3090 | csum_type, 16); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 3091 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
| 3092 | cache_generation, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 3093 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
Stefan Behrens | 2643279 | 2013-08-15 17:11:22 +0200 | [diff] [blame] | 3094 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
| 3095 | uuid_tree_generation, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 3096 | |
| 3097 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) |
| 3098 | { |
David Sterba | 1104a88 | 2013-03-06 15:57:46 +0100 | [diff] [blame] | 3099 | u16 t = btrfs_super_csum_type(s); |
| 3100 | /* |
| 3101 | * csum type is validated at mount time |
| 3102 | */ |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 3103 | return btrfs_csum_sizes[t]; |
| 3104 | } |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3105 | |
| 3106 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 3107 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3108 | return offsetof(struct btrfs_leaf, items); |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 3109 | } |
| 3110 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3111 | /* struct btrfs_file_extent_item */ |
| 3112 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 3113 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
| 3114 | struct btrfs_file_extent_item, disk_bytenr, 64); |
| 3115 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, |
| 3116 | struct btrfs_file_extent_item, offset, 64); |
| 3117 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, |
| 3118 | struct btrfs_file_extent_item, generation, 64); |
| 3119 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, |
| 3120 | struct btrfs_file_extent_item, num_bytes, 64); |
Josef Bacik | e20d6c5 | 2013-11-13 21:11:49 -0500 | [diff] [blame] | 3121 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
| 3122 | struct btrfs_file_extent_item, disk_num_bytes, 64); |
| 3123 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, |
| 3124 | struct btrfs_file_extent_item, compression, 8); |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 3125 | |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 3126 | static inline unsigned long |
| 3127 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 3128 | { |
David Sterba | 7ec20af | 2014-07-24 17:34:58 +0200 | [diff] [blame] | 3129 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 3130 | } |
| 3131 | |
| 3132 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) |
| 3133 | { |
David Sterba | 7ec20af | 2014-07-24 17:34:58 +0200 | [diff] [blame] | 3134 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 3135 | } |
| 3136 | |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3137 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
| 3138 | disk_bytenr, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3139 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
| 3140 | generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3141 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
| 3142 | disk_num_bytes, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3143 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
| 3144 | offset, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3145 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
| 3146 | num_bytes, 64); |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 3147 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
| 3148 | ram_bytes, 64); |
| 3149 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, |
| 3150 | compression, 8); |
| 3151 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, |
| 3152 | encryption, 8); |
| 3153 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, |
| 3154 | other_encoding, 16); |
| 3155 | |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 3156 | /* |
| 3157 | * this returns the number of bytes used by the item on disk, minus the |
| 3158 | * size of any extent headers. If a file is compressed on disk, this is |
| 3159 | * the compressed size |
| 3160 | */ |
| 3161 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, |
| 3162 | struct btrfs_item *e) |
| 3163 | { |
David Sterba | 7ec20af | 2014-07-24 17:34:58 +0200 | [diff] [blame] | 3164 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 3165 | } |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 3166 | |
Chris Mason | 514ac8a | 2014-01-03 21:07:00 -0800 | [diff] [blame] | 3167 | /* this returns the number of file bytes represented by the inline item. |
| 3168 | * If an item is compressed, this is the uncompressed size |
| 3169 | */ |
| 3170 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, |
| 3171 | int slot, |
| 3172 | struct btrfs_file_extent_item *fi) |
| 3173 | { |
| 3174 | struct btrfs_map_token token; |
| 3175 | |
| 3176 | btrfs_init_map_token(&token); |
| 3177 | /* |
| 3178 | * return the space used on disk if this item isn't |
| 3179 | * compressed or encoded |
| 3180 | */ |
| 3181 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && |
| 3182 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && |
| 3183 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { |
| 3184 | return btrfs_file_extent_inline_item_len(eb, |
| 3185 | btrfs_item_nr(slot)); |
| 3186 | } |
| 3187 | |
| 3188 | /* otherwise use the ram bytes field */ |
| 3189 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); |
| 3190 | } |
| 3191 | |
| 3192 | |
Stefan Behrens | 733f4fb | 2012-05-25 16:06:10 +0200 | [diff] [blame] | 3193 | /* btrfs_dev_stats_item */ |
| 3194 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, |
| 3195 | struct btrfs_dev_stats_item *ptr, |
| 3196 | int index) |
| 3197 | { |
| 3198 | u64 val; |
| 3199 | |
| 3200 | read_extent_buffer(eb, &val, |
| 3201 | offsetof(struct btrfs_dev_stats_item, values) + |
| 3202 | ((unsigned long)ptr) + (index * sizeof(u64)), |
| 3203 | sizeof(val)); |
| 3204 | return val; |
| 3205 | } |
| 3206 | |
| 3207 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, |
| 3208 | struct btrfs_dev_stats_item *ptr, |
| 3209 | int index, u64 val) |
| 3210 | { |
| 3211 | write_extent_buffer(eb, &val, |
| 3212 | offsetof(struct btrfs_dev_stats_item, values) + |
| 3213 | ((unsigned long)ptr) + (index * sizeof(u64)), |
| 3214 | sizeof(val)); |
| 3215 | } |
| 3216 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 3217 | /* btrfs_qgroup_status_item */ |
| 3218 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, |
| 3219 | generation, 64); |
| 3220 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, |
| 3221 | version, 64); |
| 3222 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, |
| 3223 | flags, 64); |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 3224 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
| 3225 | rescan, 64); |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 3226 | |
| 3227 | /* btrfs_qgroup_info_item */ |
| 3228 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, |
| 3229 | generation, 64); |
| 3230 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); |
| 3231 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, |
| 3232 | rfer_cmpr, 64); |
| 3233 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); |
| 3234 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, |
| 3235 | excl_cmpr, 64); |
| 3236 | |
| 3237 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, |
| 3238 | struct btrfs_qgroup_info_item, generation, 64); |
| 3239 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, |
| 3240 | rfer, 64); |
| 3241 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, |
| 3242 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); |
| 3243 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, |
| 3244 | excl, 64); |
| 3245 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, |
| 3246 | struct btrfs_qgroup_info_item, excl_cmpr, 64); |
| 3247 | |
| 3248 | /* btrfs_qgroup_limit_item */ |
| 3249 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, |
| 3250 | flags, 64); |
| 3251 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, |
| 3252 | max_rfer, 64); |
| 3253 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, |
| 3254 | max_excl, 64); |
| 3255 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, |
| 3256 | rsv_rfer, 64); |
| 3257 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, |
| 3258 | rsv_excl, 64); |
| 3259 | |
Stefan Behrens | a2bff64 | 2012-11-05 17:32:20 +0100 | [diff] [blame] | 3260 | /* btrfs_dev_replace_item */ |
| 3261 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, |
| 3262 | struct btrfs_dev_replace_item, src_devid, 64); |
| 3263 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, |
| 3264 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, |
| 3265 | 64); |
| 3266 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, |
| 3267 | replace_state, 64); |
| 3268 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, |
| 3269 | time_started, 64); |
| 3270 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, |
| 3271 | time_stopped, 64); |
| 3272 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, |
| 3273 | num_write_errors, 64); |
| 3274 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, |
| 3275 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, |
| 3276 | 64); |
| 3277 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, |
| 3278 | cursor_left, 64); |
| 3279 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, |
| 3280 | cursor_right, 64); |
| 3281 | |
| 3282 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, |
| 3283 | struct btrfs_dev_replace_item, src_devid, 64); |
| 3284 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, |
| 3285 | struct btrfs_dev_replace_item, |
| 3286 | cont_reading_from_srcdev_mode, 64); |
| 3287 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, |
| 3288 | struct btrfs_dev_replace_item, replace_state, 64); |
| 3289 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, |
| 3290 | struct btrfs_dev_replace_item, time_started, 64); |
| 3291 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, |
| 3292 | struct btrfs_dev_replace_item, time_stopped, 64); |
| 3293 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, |
| 3294 | struct btrfs_dev_replace_item, num_write_errors, 64); |
| 3295 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, |
| 3296 | struct btrfs_dev_replace_item, |
| 3297 | num_uncorrectable_read_errors, 64); |
| 3298 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, |
| 3299 | struct btrfs_dev_replace_item, cursor_left, 64); |
| 3300 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, |
| 3301 | struct btrfs_dev_replace_item, cursor_right, 64); |
| 3302 | |
Al Viro | 815745c | 2011-11-17 15:40:49 -0500 | [diff] [blame] | 3303 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 3304 | { |
| 3305 | return sb->s_fs_info; |
| 3306 | } |
| 3307 | |
Chris Mason | 4beb1b8 | 2007-03-14 10:31:29 -0400 | [diff] [blame] | 3308 | /* helper function to cast into the data area of the leaf. */ |
| 3309 | #define btrfs_item_ptr(leaf, slot, type) \ |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 3310 | ((type *)(btrfs_leaf_data(leaf) + \ |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3311 | btrfs_item_offset_nr(leaf, slot))) |
| 3312 | |
| 3313 | #define btrfs_item_ptr_offset(leaf, slot) \ |
| 3314 | ((unsigned long)(btrfs_leaf_data(leaf) + \ |
| 3315 | btrfs_item_offset_nr(leaf, slot))) |
Chris Mason | 4beb1b8 | 2007-03-14 10:31:29 -0400 | [diff] [blame] | 3316 | |
Josef Bacik | 6737773 | 2010-09-16 16:19:09 -0400 | [diff] [blame] | 3317 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
| 3318 | { |
| 3319 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && |
| 3320 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); |
| 3321 | } |
| 3322 | |
Josef Bacik | 3b16a4e | 2011-09-21 15:05:58 -0400 | [diff] [blame] | 3323 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
| 3324 | { |
| 3325 | return mapping_gfp_mask(mapping) & ~__GFP_FS; |
| 3326 | } |
| 3327 | |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 3328 | /* extent-tree.c */ |
Chris Mason | 28f75a0 | 2015-02-04 06:59:29 -0800 | [diff] [blame] | 3329 | |
| 3330 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_root *root, u64 csum_bytes); |
| 3331 | |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3332 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
Josef Bacik | 9e0baf6 | 2011-07-15 15:16:44 +0000 | [diff] [blame] | 3333 | unsigned num_items) |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3334 | { |
David Sterba | 707e8a0 | 2014-06-04 19:22:26 +0200 | [diff] [blame] | 3335 | return (root->nodesize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * |
Josef Bacik | c4fbb43 | 2013-09-17 10:50:06 -0400 | [diff] [blame] | 3336 | 2 * num_items; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3337 | } |
| 3338 | |
Josef Bacik | 0712718 | 2011-08-19 10:29:59 -0400 | [diff] [blame] | 3339 | /* |
| 3340 | * Doing a truncate won't result in new nodes or leaves, just what we need for |
| 3341 | * COW. |
| 3342 | */ |
| 3343 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, |
| 3344 | unsigned num_items) |
| 3345 | { |
David Sterba | 707e8a0 | 2014-06-04 19:22:26 +0200 | [diff] [blame] | 3346 | return root->nodesize * BTRFS_MAX_LEVEL * num_items; |
Josef Bacik | 0712718 | 2011-08-19 10:29:59 -0400 | [diff] [blame] | 3347 | } |
| 3348 | |
Josef Bacik | 1be41b7 | 2013-06-12 13:56:06 -0400 | [diff] [blame] | 3349 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
| 3350 | struct btrfs_root *root); |
Josef Bacik | 0a2b2a8 | 2014-01-23 10:54:11 -0500 | [diff] [blame] | 3351 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
| 3352 | struct btrfs_root *root); |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 3353 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
Chris Mason | 56bec29 | 2009-03-13 10:10:06 -0400 | [diff] [blame] | 3354 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
| 3355 | struct btrfs_root *root, unsigned long count); |
Chris Mason | a79b7d4 | 2014-05-22 16:18:52 -0700 | [diff] [blame] | 3356 | int btrfs_async_run_delayed_refs(struct btrfs_root *root, |
| 3357 | unsigned long count, int wait); |
Filipe Manana | 1a4ed8f | 2014-10-27 10:44:24 +0000 | [diff] [blame] | 3358 | int btrfs_lookup_data_extent(struct btrfs_root *root, u64 start, u64 len); |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 3359 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
| 3360 | struct btrfs_root *root, u64 bytenr, |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 3361 | u64 offset, int metadata, u64 *refs, u64 *flags); |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 3362 | int btrfs_pin_extent(struct btrfs_root *root, |
| 3363 | u64 bytenr, u64 num, int reserved); |
Liu Bo | dcfac41 | 2012-12-27 09:01:20 +0000 | [diff] [blame] | 3364 | int btrfs_pin_extent_for_log_replay(struct btrfs_root *root, |
Chris Mason | e688b725 | 2011-10-31 20:52:39 -0400 | [diff] [blame] | 3365 | u64 bytenr, u64 num_bytes); |
Josef Bacik | 8c2a1a3 | 2013-06-06 13:19:32 -0400 | [diff] [blame] | 3366 | int btrfs_exclude_logged_extents(struct btrfs_root *root, |
| 3367 | struct extent_buffer *eb); |
Yan Zheng | 80ff385 | 2008-10-30 14:20:02 -0400 | [diff] [blame] | 3368 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3369 | struct btrfs_root *root, |
| 3370 | u64 objectid, u64 offset, u64 bytenr); |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 3371 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
| 3372 | struct btrfs_fs_info *info, |
| 3373 | u64 bytenr); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3374 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
Jeff Mahoney | 6ab0a20 | 2013-11-01 13:07:04 -0400 | [diff] [blame] | 3375 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
David Sterba | 4d75f8a | 2014-06-15 01:54:12 +0200 | [diff] [blame] | 3376 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
| 3377 | struct btrfs_root *root, u64 parent, |
| 3378 | u64 root_objectid, |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3379 | struct btrfs_disk_key *key, int level, |
Jan Schmidt | 5581a51 | 2012-05-16 17:04:52 +0200 | [diff] [blame] | 3380 | u64 hint, u64 empty_size); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 3381 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
| 3382 | struct btrfs_root *root, |
| 3383 | struct extent_buffer *buf, |
Jan Schmidt | 5581a51 | 2012-05-16 17:04:52 +0200 | [diff] [blame] | 3384 | u64 parent, int last_ref); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3385 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
| 3386 | struct btrfs_root *root, |
| 3387 | u64 root_objectid, u64 owner, |
| 3388 | u64 offset, struct btrfs_key *ins); |
| 3389 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
| 3390 | struct btrfs_root *root, |
| 3391 | u64 root_objectid, u64 owner, u64 offset, |
| 3392 | struct btrfs_key *ins); |
Josef Bacik | 0036158 | 2013-08-14 14:02:47 -0400 | [diff] [blame] | 3393 | int btrfs_reserve_extent(struct btrfs_root *root, u64 num_bytes, |
| 3394 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
Miao Xie | e570fd2 | 2014-06-19 10:42:50 +0800 | [diff] [blame] | 3395 | struct btrfs_key *ins, int is_data, int delalloc); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3396 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
Josef Bacik | e339a6b | 2014-07-02 10:54:25 -0700 | [diff] [blame] | 3397 | struct extent_buffer *buf, int full_backref); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3398 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
Josef Bacik | e339a6b | 2014-07-02 10:54:25 -0700 | [diff] [blame] | 3399 | struct extent_buffer *buf, int full_backref); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3400 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
| 3401 | struct btrfs_root *root, |
| 3402 | u64 bytenr, u64 num_bytes, u64 flags, |
Josef Bacik | b1c79e0 | 2013-05-09 13:49:30 -0400 | [diff] [blame] | 3403 | int level, int is_data); |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 3404 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
| 3405 | struct btrfs_root *root, |
Arne Jansen | 66d7e7f | 2011-09-12 15:26:38 +0200 | [diff] [blame] | 3406 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
Josef Bacik | fcebe45 | 2014-05-13 17:30:47 -0700 | [diff] [blame] | 3407 | u64 owner, u64 offset, int no_quota); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3408 | |
Miao Xie | e570fd2 | 2014-06-19 10:42:50 +0800 | [diff] [blame] | 3409 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len, |
| 3410 | int delalloc); |
Chris Mason | e688b725 | 2011-10-31 20:52:39 -0400 | [diff] [blame] | 3411 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
| 3412 | u64 start, u64 len); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3413 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
| 3414 | struct btrfs_root *root); |
Chris Mason | ccd467d | 2007-06-28 15:57:36 -0400 | [diff] [blame] | 3415 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 3416 | struct btrfs_root *root); |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 3417 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 3418 | struct btrfs_root *root, |
| 3419 | u64 bytenr, u64 num_bytes, u64 parent, |
Josef Bacik | fcebe45 | 2014-05-13 17:30:47 -0700 | [diff] [blame] | 3420 | u64 root_objectid, u64 owner, u64 offset, int no_quota); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3421 | |
Chris Mason | 1bbc621 | 2015-04-06 12:46:08 -0700 | [diff] [blame] | 3422 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans, |
| 3423 | struct btrfs_root *root); |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 3424 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
| 3425 | struct btrfs_root *root); |
Josef Bacik | dcdf7f6 | 2015-03-02 16:37:31 -0500 | [diff] [blame] | 3426 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
| 3427 | struct btrfs_root *root); |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 3428 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 3429 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
| 3430 | int btrfs_read_block_groups(struct btrfs_root *root); |
Josef Bacik | ba1bf48 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 3431 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 3432 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
| 3433 | struct btrfs_root *root, u64 bytes_used, |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 3434 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 3435 | u64 size); |
Zheng Yan | 1a40e23 | 2008-09-26 10:09:34 -0400 | [diff] [blame] | 3436 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
Filipe Manana | 0421682 | 2014-11-27 21:14:15 +0000 | [diff] [blame] | 3437 | struct btrfs_root *root, u64 group_start, |
| 3438 | struct extent_map *em); |
Josef Bacik | 47ab2a6 | 2014-09-18 11:20:02 -0400 | [diff] [blame] | 3439 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
Josef Bacik | ea658ba | 2012-09-11 16:57:25 -0400 | [diff] [blame] | 3440 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
| 3441 | struct btrfs_root *root); |
Miao Xie | 6d07bce | 2011-01-05 10:07:31 +0000 | [diff] [blame] | 3442 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 3443 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 3444 | |
| 3445 | enum btrfs_reserve_flush_enum { |
| 3446 | /* If we are in the transaction, we can't flush anything.*/ |
| 3447 | BTRFS_RESERVE_NO_FLUSH, |
| 3448 | /* |
| 3449 | * Flushing delalloc may cause deadlock somewhere, in this |
| 3450 | * case, use FLUSH LIMIT |
| 3451 | */ |
| 3452 | BTRFS_RESERVE_FLUSH_LIMIT, |
| 3453 | BTRFS_RESERVE_FLUSH_ALL, |
| 3454 | }; |
| 3455 | |
Dongsheng Yang | e2d1f92 | 2015-02-06 10:26:52 -0500 | [diff] [blame] | 3456 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes, u64 write_bytes); |
Yan, Zheng | 0ca1f7c | 2010-05-16 10:48:47 -0400 | [diff] [blame] | 3457 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 3458 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
| 3459 | struct btrfs_root *root); |
Filipe Manana | 4fbcdf6 | 2015-05-20 14:01:54 +0100 | [diff] [blame] | 3460 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 3461 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
| 3462 | struct inode *inode); |
| 3463 | void btrfs_orphan_release_metadata(struct inode *inode); |
Miao Xie | d5c1207 | 2013-02-28 10:04:33 +0000 | [diff] [blame] | 3464 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
| 3465 | struct btrfs_block_rsv *rsv, |
| 3466 | int nitems, |
Jeff Mahoney | ee3441b | 2013-07-09 16:37:21 -0400 | [diff] [blame] | 3467 | u64 *qgroup_reserved, bool use_global_rsv); |
Miao Xie | d5c1207 | 2013-02-28 10:04:33 +0000 | [diff] [blame] | 3468 | void btrfs_subvolume_release_metadata(struct btrfs_root *root, |
| 3469 | struct btrfs_block_rsv *rsv, |
| 3470 | u64 qgroup_reserved); |
Yan, Zheng | 0ca1f7c | 2010-05-16 10:48:47 -0400 | [diff] [blame] | 3471 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
| 3472 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); |
| 3473 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); |
| 3474 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 3475 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
| 3476 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, |
| 3477 | unsigned short type); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 3478 | void btrfs_free_block_rsv(struct btrfs_root *root, |
| 3479 | struct btrfs_block_rsv *rsv); |
Chris Mason | cdfb080 | 2015-04-06 18:17:00 -0700 | [diff] [blame] | 3480 | void __btrfs_free_block_rsv(struct btrfs_block_rsv *rsv); |
Josef Bacik | 4a92b1b | 2011-08-30 12:34:28 -0400 | [diff] [blame] | 3481 | int btrfs_block_rsv_add(struct btrfs_root *root, |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 3482 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
| 3483 | enum btrfs_reserve_flush_enum flush); |
Josef Bacik | 4a92b1b | 2011-08-30 12:34:28 -0400 | [diff] [blame] | 3484 | int btrfs_block_rsv_check(struct btrfs_root *root, |
Josef Bacik | 36ba022 | 2011-10-18 12:15:48 -0400 | [diff] [blame] | 3485 | struct btrfs_block_rsv *block_rsv, int min_factor); |
| 3486 | int btrfs_block_rsv_refill(struct btrfs_root *root, |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 3487 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
| 3488 | enum btrfs_reserve_flush_enum flush); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 3489 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
| 3490 | struct btrfs_block_rsv *dst_rsv, |
| 3491 | u64 num_bytes); |
Josef Bacik | d52be81 | 2013-05-29 14:54:47 -0400 | [diff] [blame] | 3492 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
| 3493 | struct btrfs_block_rsv *dest, u64 num_bytes, |
| 3494 | int min_factor); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 3495 | void btrfs_block_rsv_release(struct btrfs_root *root, |
| 3496 | struct btrfs_block_rsv *block_rsv, |
| 3497 | u64 num_bytes); |
| 3498 | int btrfs_set_block_group_ro(struct btrfs_root *root, |
| 3499 | struct btrfs_block_group_cache *cache); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3500 | void btrfs_set_block_group_rw(struct btrfs_root *root, |
| 3501 | struct btrfs_block_group_cache *cache); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 3502 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
Miao Xie | 6d07bce | 2011-01-05 10:07:31 +0000 | [diff] [blame] | 3503 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3504 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
| 3505 | u64 start, u64 end); |
Filipe Manana | 1edb647b | 2014-12-08 14:01:12 +0000 | [diff] [blame] | 3506 | int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr, |
| 3507 | u64 num_bytes, u64 *actual_bytes); |
Chris Mason | c87f08c | 2011-02-16 13:57:04 -0500 | [diff] [blame] | 3508 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
| 3509 | struct btrfs_root *root, u64 type); |
Li Dongyang | f7039b1 | 2011-03-24 10:24:28 +0000 | [diff] [blame] | 3510 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3511 | |
liubo | c59021f | 2011-03-07 02:13:14 +0000 | [diff] [blame] | 3512 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 3513 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
| 3514 | struct btrfs_fs_info *fs_info); |
Liu Bo | 31e5022 | 2012-11-21 14:18:10 +0000 | [diff] [blame] | 3515 | int __get_raid_index(u64 flags); |
Filipe Manana | 9ea24bb | 2014-10-29 11:57:59 +0000 | [diff] [blame] | 3516 | int btrfs_start_write_no_snapshoting(struct btrfs_root *root); |
| 3517 | void btrfs_end_write_no_snapshoting(struct btrfs_root *root); |
Filipe Manana | 39c2d7f | 2015-05-20 14:01:55 +0100 | [diff] [blame] | 3518 | void check_system_chunk(struct btrfs_trans_handle *trans, |
| 3519 | struct btrfs_root *root, |
Filipe Manana | 4617ea3 | 2015-06-09 17:48:21 +0100 | [diff] [blame] | 3520 | const u64 type); |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3521 | /* ctree.c */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3522 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
| 3523 | int level, int *slot); |
| 3524 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 3525 | int btrfs_previous_item(struct btrfs_root *root, |
| 3526 | struct btrfs_path *path, u64 min_objectid, |
| 3527 | int type); |
Wang Shilong | ade2e0b | 2014-01-12 21:38:33 +0800 | [diff] [blame] | 3528 | int btrfs_previous_extent_item(struct btrfs_root *root, |
| 3529 | struct btrfs_path *path, u64 min_objectid); |
Daniel Dressler | b7a0365 | 2014-11-12 13:43:09 +0900 | [diff] [blame] | 3530 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
| 3531 | struct btrfs_path *path, |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3532 | struct btrfs_key *new_key); |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 3533 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
| 3534 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); |
Chris Mason | e7a8456 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 3535 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 3536 | struct btrfs_key *key, int lowest_level, |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 3537 | u64 min_trans); |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 3538 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 3539 | struct btrfs_path *path, |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 3540 | u64 min_trans); |
Alexander Block | 7069830 | 2012-06-05 21:07:48 +0200 | [diff] [blame] | 3541 | enum btrfs_compare_tree_result { |
| 3542 | BTRFS_COMPARE_TREE_NEW, |
| 3543 | BTRFS_COMPARE_TREE_DELETED, |
| 3544 | BTRFS_COMPARE_TREE_CHANGED, |
Josef Bacik | ba5e8f2 | 2013-08-16 16:52:55 -0400 | [diff] [blame] | 3545 | BTRFS_COMPARE_TREE_SAME, |
Alexander Block | 7069830 | 2012-06-05 21:07:48 +0200 | [diff] [blame] | 3546 | }; |
| 3547 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, |
| 3548 | struct btrfs_root *right_root, |
| 3549 | struct btrfs_path *left_path, |
| 3550 | struct btrfs_path *right_path, |
| 3551 | struct btrfs_key *key, |
| 3552 | enum btrfs_compare_tree_result result, |
| 3553 | void *ctx); |
| 3554 | int btrfs_compare_trees(struct btrfs_root *left_root, |
| 3555 | struct btrfs_root *right_root, |
| 3556 | btrfs_changed_cb_t cb, void *ctx); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3557 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
| 3558 | struct btrfs_root *root, struct extent_buffer *buf, |
| 3559 | struct extent_buffer *parent, int parent_slot, |
Chris Mason | 9fa8cfe | 2009-03-13 10:24:59 -0400 | [diff] [blame] | 3560 | struct extent_buffer **cow_ret); |
Chris Mason | be20aa9 | 2007-12-17 20:14:01 -0500 | [diff] [blame] | 3561 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
| 3562 | struct btrfs_root *root, |
| 3563 | struct extent_buffer *buf, |
| 3564 | struct extent_buffer **cow_ret, u64 new_root_objectid); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3565 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
| 3566 | struct extent_buffer *buf); |
Tsutomu Itoh | 4b90c68 | 2013-04-16 05:18:49 +0000 | [diff] [blame] | 3567 | void btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path, |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3568 | u32 data_size); |
Tsutomu Itoh | afe5fea | 2013-04-16 05:18:22 +0000 | [diff] [blame] | 3569 | void btrfs_truncate_item(struct btrfs_root *root, struct btrfs_path *path, |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3570 | u32 new_size, int from_end); |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 3571 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
| 3572 | struct btrfs_root *root, |
| 3573 | struct btrfs_path *path, |
| 3574 | struct btrfs_key *new_key, |
| 3575 | unsigned long split_offset); |
Yan, Zheng | ad48fd75 | 2009-11-12 09:33:58 +0000 | [diff] [blame] | 3576 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
| 3577 | struct btrfs_root *root, |
| 3578 | struct btrfs_path *path, |
| 3579 | struct btrfs_key *new_key); |
Kelley Nielsen | e33d5c3 | 2013-11-04 19:33:33 -0800 | [diff] [blame] | 3580 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
| 3581 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3582 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
| 3583 | *root, struct btrfs_key *key, struct btrfs_path *p, int |
| 3584 | ins_len, int cow); |
Jan Schmidt | 5d9e75c4 | 2012-05-16 18:25:47 +0200 | [diff] [blame] | 3585 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
| 3586 | struct btrfs_path *p, u64 time_seq); |
Arne Jansen | 2f38b3e | 2011-09-13 11:18:10 +0200 | [diff] [blame] | 3587 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
| 3588 | struct btrfs_key *key, struct btrfs_path *p, |
| 3589 | int find_higher, int return_any); |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 3590 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3591 | struct btrfs_root *root, struct extent_buffer *parent, |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 3592 | int start_slot, u64 *last_ret, |
Chris Mason | a6b6e75 | 2007-10-15 16:22:39 -0400 | [diff] [blame] | 3593 | struct btrfs_key *progress); |
David Sterba | b3b4aa7 | 2011-04-21 01:20:15 +0200 | [diff] [blame] | 3594 | void btrfs_release_path(struct btrfs_path *p); |
Chris Mason | 2c90e5d | 2007-04-02 10:50:19 -0400 | [diff] [blame] | 3595 | struct btrfs_path *btrfs_alloc_path(void); |
| 3596 | void btrfs_free_path(struct btrfs_path *p); |
Chris Mason | b4ce94d | 2009-02-04 09:25:08 -0500 | [diff] [blame] | 3597 | void btrfs_set_path_blocking(struct btrfs_path *p); |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3598 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
Chris Mason | bd68151 | 2011-07-16 15:23:14 -0400 | [diff] [blame] | 3599 | struct extent_buffer *held, int held_rw); |
Chris Mason | b4ce94d | 2009-02-04 09:25:08 -0500 | [diff] [blame] | 3600 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
| 3601 | |
Chris Mason | 85e21ba | 2008-01-29 15:11:36 -0500 | [diff] [blame] | 3602 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| 3603 | struct btrfs_path *path, int slot, int nr); |
Chris Mason | 85e21ba | 2008-01-29 15:11:36 -0500 | [diff] [blame] | 3604 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
| 3605 | struct btrfs_root *root, |
| 3606 | struct btrfs_path *path) |
| 3607 | { |
| 3608 | return btrfs_del_items(trans, root, path, path->slots[0], 1); |
| 3609 | } |
| 3610 | |
Tsutomu Itoh | afe5fea | 2013-04-16 05:18:22 +0000 | [diff] [blame] | 3611 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3612 | struct btrfs_key *cpu_key, u32 *data_size, |
| 3613 | u32 total_data, u32 total_size, int nr); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3614 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
| 3615 | *root, struct btrfs_key *key, void *data, u32 data_size); |
Chris Mason | 9c58309 | 2008-01-29 15:15:18 -0500 | [diff] [blame] | 3616 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
| 3617 | struct btrfs_root *root, |
| 3618 | struct btrfs_path *path, |
| 3619 | struct btrfs_key *cpu_key, u32 *data_size, int nr); |
| 3620 | |
| 3621 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, |
| 3622 | struct btrfs_root *root, |
| 3623 | struct btrfs_path *path, |
| 3624 | struct btrfs_key *key, |
| 3625 | u32 data_size) |
| 3626 | { |
| 3627 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); |
| 3628 | } |
| 3629 | |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 3630 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
Josef Bacik | 16e7549 | 2013-10-22 12:18:51 -0400 | [diff] [blame] | 3631 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
Jan Schmidt | 3d7806e | 2012-06-11 08:29:29 +0200 | [diff] [blame] | 3632 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
| 3633 | u64 time_seq); |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 3634 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
| 3635 | struct btrfs_path *p, u64 time_seq) |
Jan Schmidt | c7d22a3 | 2011-11-22 15:14:33 +0100 | [diff] [blame] | 3636 | { |
| 3637 | ++p->slots[0]; |
| 3638 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 3639 | return btrfs_next_old_leaf(root, p, time_seq); |
Jan Schmidt | c7d22a3 | 2011-11-22 15:14:33 +0100 | [diff] [blame] | 3640 | return 0; |
| 3641 | } |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 3642 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
| 3643 | { |
| 3644 | return btrfs_next_old_item(root, p, 0); |
| 3645 | } |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3646 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
Jeff Mahoney | 2c53679 | 2011-10-03 23:22:41 -0400 | [diff] [blame] | 3647 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
| 3648 | struct btrfs_block_rsv *block_rsv, |
| 3649 | int update_ref, int for_reloc); |
Yan Zheng | f82d02d | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 3650 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
| 3651 | struct btrfs_root *root, |
| 3652 | struct extent_buffer *node, |
| 3653 | struct extent_buffer *parent); |
David Sterba | 7841cb2 | 2011-05-31 18:07:27 +0200 | [diff] [blame] | 3654 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
| 3655 | { |
| 3656 | /* |
| 3657 | * Get synced with close_ctree() |
| 3658 | */ |
| 3659 | smp_mb(); |
| 3660 | return fs_info->closing; |
| 3661 | } |
Miao Xie | babbf170 | 2013-05-14 10:20:43 +0000 | [diff] [blame] | 3662 | |
| 3663 | /* |
| 3664 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do |
| 3665 | * anything except sleeping. This function is used to check the status of |
| 3666 | * the fs. |
| 3667 | */ |
| 3668 | static inline int btrfs_need_cleaner_sleep(struct btrfs_root *root) |
| 3669 | { |
| 3670 | return (root->fs_info->sb->s_flags & MS_RDONLY || |
| 3671 | btrfs_fs_closing(root->fs_info)); |
| 3672 | } |
| 3673 | |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 3674 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
| 3675 | { |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 3676 | kfree(fs_info->balance_ctl); |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 3677 | kfree(fs_info->delayed_root); |
| 3678 | kfree(fs_info->extent_root); |
| 3679 | kfree(fs_info->tree_root); |
| 3680 | kfree(fs_info->chunk_root); |
| 3681 | kfree(fs_info->dev_root); |
| 3682 | kfree(fs_info->csum_root); |
Arne Jansen | bcef60f | 2011-09-13 15:23:30 +0200 | [diff] [blame] | 3683 | kfree(fs_info->quota_root); |
Filipe David Borba Manana | d8f9803 | 2013-08-24 19:51:06 +0100 | [diff] [blame] | 3684 | kfree(fs_info->uuid_root); |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 3685 | kfree(fs_info->super_copy); |
| 3686 | kfree(fs_info->super_for_commit); |
Qu Wenruo | f667aef | 2014-09-23 13:40:08 +0800 | [diff] [blame] | 3687 | security_free_mnt_opts(&fs_info->security_opts); |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 3688 | kfree(fs_info); |
| 3689 | } |
David Sterba | 7841cb2 | 2011-05-31 18:07:27 +0200 | [diff] [blame] | 3690 | |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 3691 | /* tree mod log functions from ctree.c */ |
| 3692 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, |
| 3693 | struct seq_list *elem); |
| 3694 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, |
| 3695 | struct seq_list *elem); |
Jan Schmidt | 5b6602e | 2012-10-23 11:28:27 +0200 | [diff] [blame] | 3696 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 3697 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3698 | /* root-item.c */ |
Chris Mason | ea9e8b1 | 2008-11-17 21:14:24 -0500 | [diff] [blame] | 3699 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3700 | struct btrfs_path *path, |
| 3701 | u64 root_id, u64 ref_id); |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 3702 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
| 3703 | struct btrfs_root *tree_root, |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3704 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
| 3705 | const char *name, int name_len); |
| 3706 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, |
| 3707 | struct btrfs_root *tree_root, |
| 3708 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 3709 | const char *name, int name_len); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3710 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| 3711 | struct btrfs_key *key); |
| 3712 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root |
| 3713 | *root, struct btrfs_key *key, struct btrfs_root_item |
| 3714 | *item); |
Jeff Mahoney | b45a9d8 | 2011-10-03 23:22:44 -0400 | [diff] [blame] | 3715 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
| 3716 | struct btrfs_root *root, |
| 3717 | struct btrfs_key *key, |
| 3718 | struct btrfs_root_item *item); |
Miao Xie | cb517ea | 2013-05-15 07:48:19 +0000 | [diff] [blame] | 3719 | int btrfs_find_root(struct btrfs_root *root, struct btrfs_key *search_key, |
| 3720 | struct btrfs_path *path, struct btrfs_root_item *root_item, |
| 3721 | struct btrfs_key *root_key); |
Yan, Zheng | 76dda93 | 2009-09-21 16:00:26 -0400 | [diff] [blame] | 3722 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
Mark Fasheh | bf5f32e | 2011-07-14 21:23:06 +0000 | [diff] [blame] | 3723 | void btrfs_set_root_node(struct btrfs_root_item *item, |
| 3724 | struct extent_buffer *node); |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 3725 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 3726 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
| 3727 | struct btrfs_root *root); |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 3728 | |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 3729 | /* uuid-tree.c */ |
| 3730 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, |
| 3731 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, |
| 3732 | u64 subid); |
| 3733 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, |
| 3734 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, |
| 3735 | u64 subid); |
Stefan Behrens | 70f8017 | 2013-08-15 17:11:23 +0200 | [diff] [blame] | 3736 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
| 3737 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, |
| 3738 | u64)); |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 3739 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3740 | /* dir-item.c */ |
Chris Mason | 9c52057 | 2012-12-17 14:26:57 -0500 | [diff] [blame] | 3741 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
| 3742 | const char *name, int name_len); |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 3743 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
| 3744 | struct btrfs_root *root, const char *name, |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3745 | int name_len, struct inode *dir, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 3746 | struct btrfs_key *location, u8 type, u64 index); |
Chris Mason | 7e38180 | 2007-04-19 15:36:27 -0400 | [diff] [blame] | 3747 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
| 3748 | struct btrfs_root *root, |
| 3749 | struct btrfs_path *path, u64 dir, |
| 3750 | const char *name, int name_len, |
| 3751 | int mod); |
| 3752 | struct btrfs_dir_item * |
| 3753 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, |
| 3754 | struct btrfs_root *root, |
| 3755 | struct btrfs_path *path, u64 dir, |
| 3756 | u64 objectid, const char *name, int name_len, |
| 3757 | int mod); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3758 | struct btrfs_dir_item * |
| 3759 | btrfs_search_dir_index_item(struct btrfs_root *root, |
| 3760 | struct btrfs_path *path, u64 dirid, |
| 3761 | const char *name, int name_len); |
Chris Mason | 7e38180 | 2007-04-19 15:36:27 -0400 | [diff] [blame] | 3762 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
| 3763 | struct btrfs_root *root, |
| 3764 | struct btrfs_path *path, |
| 3765 | struct btrfs_dir_item *di); |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 3766 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
Yan, Zheng | f34f57a | 2009-11-12 09:35:27 +0000 | [diff] [blame] | 3767 | struct btrfs_root *root, |
| 3768 | struct btrfs_path *path, u64 objectid, |
| 3769 | const char *name, u16 name_len, |
| 3770 | const void *data, u16 data_len); |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 3771 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
| 3772 | struct btrfs_root *root, |
| 3773 | struct btrfs_path *path, u64 dir, |
| 3774 | const char *name, u16 name_len, |
| 3775 | int mod); |
Josef Bacik | 22a94d4 | 2011-03-16 16:47:17 -0400 | [diff] [blame] | 3776 | int verify_dir_item(struct btrfs_root *root, |
| 3777 | struct extent_buffer *leaf, |
| 3778 | struct btrfs_dir_item *dir_item); |
Filipe Manana | 5f5bc6b | 2014-11-09 08:38:39 +0000 | [diff] [blame] | 3779 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
| 3780 | struct btrfs_path *path, |
| 3781 | const char *name, |
| 3782 | int name_len); |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 3783 | |
| 3784 | /* orphan.c */ |
| 3785 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, |
| 3786 | struct btrfs_root *root, u64 offset); |
| 3787 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, |
| 3788 | struct btrfs_root *root, u64 offset); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3789 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 3790 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3791 | /* inode-item.c */ |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 3792 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
| 3793 | struct btrfs_root *root, |
| 3794 | const char *name, int name_len, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 3795 | u64 inode_objectid, u64 ref_objectid, u64 index); |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 3796 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
| 3797 | struct btrfs_root *root, |
| 3798 | const char *name, int name_len, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 3799 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3800 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
| 3801 | struct btrfs_root *root, |
| 3802 | struct btrfs_path *path, u64 objectid); |
Chris Mason | 293ffd5 | 2007-03-20 15:57:25 -0400 | [diff] [blame] | 3803 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 3804 | *root, struct btrfs_path *path, |
| 3805 | struct btrfs_key *location, int mod); |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3806 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 3807 | struct btrfs_inode_extref * |
| 3808 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, |
| 3809 | struct btrfs_root *root, |
| 3810 | struct btrfs_path *path, |
| 3811 | const char *name, int name_len, |
| 3812 | u64 inode_objectid, u64 ref_objectid, int ins_len, |
| 3813 | int cow); |
| 3814 | |
| 3815 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, |
| 3816 | u64 ref_objectid, const char *name, |
| 3817 | int name_len, |
| 3818 | struct btrfs_inode_extref **extref_ret); |
| 3819 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3820 | /* file-item.c */ |
Miao Xie | facc8a22 | 2013-07-25 19:22:34 +0800 | [diff] [blame] | 3821 | struct btrfs_dio_private; |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 3822 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
| 3823 | struct btrfs_root *root, u64 bytenr, u64 len); |
Chris Mason | 61b4944 | 2008-07-31 15:42:53 -0400 | [diff] [blame] | 3824 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 3825 | struct bio *bio, u32 *dst); |
Josef Bacik | 4b46fce | 2010-05-23 11:00:55 -0400 | [diff] [blame] | 3826 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
Miao Xie | 23ea8e5 | 2014-09-12 18:43:54 +0800 | [diff] [blame] | 3827 | struct bio *bio, u64 logical_offset); |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 3828 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 3829 | struct btrfs_root *root, |
| 3830 | u64 objectid, u64 pos, |
| 3831 | u64 disk_offset, u64 disk_num_bytes, |
| 3832 | u64 num_bytes, u64 offset, u64 ram_bytes, |
| 3833 | u8 compression, u8 encryption, u16 other_encoding); |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3834 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
| 3835 | struct btrfs_root *root, |
| 3836 | struct btrfs_path *path, u64 objectid, |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3837 | u64 bytenr, int mod); |
Chris Mason | 065631f | 2008-02-20 12:07:25 -0500 | [diff] [blame] | 3838 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 3839 | struct btrfs_root *root, |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 3840 | struct btrfs_ordered_sum *sums); |
Chris Mason | 3edf7d3 | 2008-07-18 06:17:13 -0400 | [diff] [blame] | 3841 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 3842 | struct bio *bio, u64 file_start, int contig); |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 3843 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
| 3844 | struct list_head *list, int search_commit); |
Filipe Manana | 7ffbb59 | 2014-06-09 03:48:05 +0100 | [diff] [blame] | 3845 | void btrfs_extent_item_to_extent_map(struct inode *inode, |
| 3846 | const struct btrfs_path *path, |
| 3847 | struct btrfs_file_extent_item *fi, |
| 3848 | const bool new_inline, |
| 3849 | struct extent_map *em); |
| 3850 | |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3851 | /* inode.c */ |
Miao Xie | 8ccf6f19 | 2012-10-25 09:28:04 +0000 | [diff] [blame] | 3852 | struct btrfs_delalloc_work { |
| 3853 | struct inode *inode; |
| 3854 | int wait; |
| 3855 | int delay_iput; |
| 3856 | struct completion completion; |
| 3857 | struct list_head list; |
| 3858 | struct btrfs_work work; |
| 3859 | }; |
| 3860 | |
| 3861 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, |
| 3862 | int wait, int delay_iput); |
| 3863 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); |
| 3864 | |
Josef Bacik | b267515 | 2011-07-18 13:21:36 -0400 | [diff] [blame] | 3865 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
| 3866 | size_t pg_offset, u64 start, u64 len, |
| 3867 | int create); |
Josef Bacik | 0036158 | 2013-08-14 14:02:47 -0400 | [diff] [blame] | 3868 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
Josef Bacik | 7ee9e44 | 2013-06-21 16:37:03 -0400 | [diff] [blame] | 3869 | u64 *orig_start, u64 *orig_block_len, |
| 3870 | u64 *ram_bytes); |
Chris Mason | 4881ee5 | 2008-07-24 09:51:08 -0400 | [diff] [blame] | 3871 | |
| 3872 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ |
Eric Sandeen | 5036f53 | 2008-08-07 11:19:42 -0400 | [diff] [blame] | 3873 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
Chris Mason | 4881ee5 | 2008-07-24 09:51:08 -0400 | [diff] [blame] | 3874 | #define ClearPageChecked ClearPageFsMisc |
| 3875 | #define SetPageChecked SetPageFsMisc |
| 3876 | #define PageChecked PageFsMisc |
| 3877 | #endif |
| 3878 | |
Li Zefan | b6973aa | 2011-07-20 03:46:35 +0000 | [diff] [blame] | 3879 | /* This forces readahead on a given range of bytes in an inode */ |
| 3880 | static inline void btrfs_force_ra(struct address_space *mapping, |
| 3881 | struct file_ra_state *ra, struct file *file, |
| 3882 | pgoff_t offset, unsigned long req_size) |
| 3883 | { |
| 3884 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); |
| 3885 | } |
| 3886 | |
Chris Mason | 3de4586 | 2008-11-17 21:02:50 -0500 | [diff] [blame] | 3887 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
| 3888 | int btrfs_set_inode_index(struct inode *dir, u64 *index); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3889 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
| 3890 | struct btrfs_root *root, |
| 3891 | struct inode *dir, struct inode *inode, |
| 3892 | const char *name, int name_len); |
| 3893 | int btrfs_add_link(struct btrfs_trans_handle *trans, |
| 3894 | struct inode *parent_inode, struct inode *inode, |
| 3895 | const char *name, int name_len, int add_backref, u64 index); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3896 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
| 3897 | struct btrfs_root *root, |
| 3898 | struct inode *dir, u64 objectid, |
| 3899 | const char *name, int name_len); |
Josef Bacik | 2aaa665 | 2012-08-29 14:27:18 -0400 | [diff] [blame] | 3900 | int btrfs_truncate_page(struct inode *inode, loff_t from, loff_t len, |
| 3901 | int front); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3902 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
| 3903 | struct btrfs_root *root, |
| 3904 | struct inode *inode, u64 new_size, |
| 3905 | u32 min_type); |
| 3906 | |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 3907 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
Miao Xie | 6c255e6 | 2014-03-06 13:55:01 +0800 | [diff] [blame] | 3908 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
| 3909 | int nr); |
Josef Bacik | 2ac55d4 | 2010-02-03 19:33:23 +0000 | [diff] [blame] | 3910 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
| 3911 | struct extent_state **cached_state); |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 3912 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
Filipe David Borba Manana | 6354192 | 2014-01-07 11:47:46 +0000 | [diff] [blame] | 3913 | struct btrfs_root *new_root, |
| 3914 | struct btrfs_root *parent_root, |
| 3915 | u64 new_dirid); |
David Woodhouse | 64a1670 | 2009-07-15 23:29:37 +0100 | [diff] [blame] | 3916 | int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, |
| 3917 | size_t size, struct bio *bio, |
| 3918 | unsigned long bio_flags); |
Nick Piggin | c2ec175 | 2009-03-31 15:23:21 -0700 | [diff] [blame] | 3919 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
Chris Mason | 9ebefb18 | 2007-06-15 13:50:00 -0400 | [diff] [blame] | 3920 | int btrfs_readpage(struct file *file, struct page *page); |
Al Viro | bd55597 | 2010-06-07 11:35:40 -0400 | [diff] [blame] | 3921 | void btrfs_evict_inode(struct inode *inode); |
Christoph Hellwig | a9185b4 | 2010-03-05 09:21:37 +0100 | [diff] [blame] | 3922 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3923 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
| 3924 | void btrfs_destroy_inode(struct inode *inode); |
Al Viro | 45321ac | 2010-06-07 13:43:19 -0400 | [diff] [blame] | 3925 | int btrfs_drop_inode(struct inode *inode); |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3926 | int btrfs_init_cachep(void); |
| 3927 | void btrfs_destroy_cachep(void); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3928 | long btrfs_ioctl_trans_end(struct file *file); |
Balaji Rao | 1a54ef8 | 2008-07-21 02:01:04 +0530 | [diff] [blame] | 3929 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
Josef Bacik | 73f7341 | 2009-12-04 17:38:27 +0000 | [diff] [blame] | 3930 | struct btrfs_root *root, int *was_new); |
Chris Mason | a52d9a8 | 2007-08-27 16:49:44 -0400 | [diff] [blame] | 3931 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
David Sterba | 306e16c | 2011-04-19 14:29:38 +0200 | [diff] [blame] | 3932 | size_t pg_offset, u64 start, u64 end, |
Chris Mason | a52d9a8 | 2007-08-27 16:49:44 -0400 | [diff] [blame] | 3933 | int create); |
| 3934 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
| 3935 | struct btrfs_root *root, |
| 3936 | struct inode *inode); |
Josef Bacik | be6aef6 | 2012-10-22 15:43:12 -0400 | [diff] [blame] | 3937 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
| 3938 | struct btrfs_root *root, struct inode *inode); |
Zheng Yan | 5b21f2e | 2008-09-26 10:05:38 -0400 | [diff] [blame] | 3939 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
Josef Bacik | 66b4ffd | 2011-01-31 16:22:42 -0500 | [diff] [blame] | 3940 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 3941 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
| 3942 | struct btrfs_root *root); |
Josef Bacik | a41ad39 | 2011-01-31 15:30:16 -0500 | [diff] [blame] | 3943 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3944 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 3945 | void btrfs_add_delayed_iput(struct inode *inode); |
| 3946 | void btrfs_run_delayed_iputs(struct btrfs_root *root); |
Yan, Zheng | efa5646 | 2010-05-16 10:49:59 -0400 | [diff] [blame] | 3947 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
| 3948 | u64 start, u64 num_bytes, u64 min_size, |
| 3949 | loff_t actual_len, u64 *alloc_hint); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 3950 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
| 3951 | struct btrfs_trans_handle *trans, int mode, |
| 3952 | u64 start, u64 num_bytes, u64 min_size, |
| 3953 | loff_t actual_len, u64 *alloc_hint); |
Filipe Manana | b38ef71 | 2014-11-13 17:01:45 +0000 | [diff] [blame] | 3954 | int btrfs_inode_check_errors(struct inode *inode); |
Alexey Dobriyan | 82d339d | 2009-10-09 09:54:36 -0400 | [diff] [blame] | 3955 | extern const struct dentry_operations btrfs_dentry_operations; |
Josef Bacik | 6a3891c | 2015-03-16 17:38:52 -0400 | [diff] [blame] | 3956 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
| 3957 | void btrfs_test_inode_set_ops(struct inode *inode); |
| 3958 | #endif |
Christoph Hellwig | f46b5a6 | 2008-06-11 21:53:53 -0400 | [diff] [blame] | 3959 | |
| 3960 | /* ioctl.c */ |
| 3961 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 3962 | void btrfs_update_iflags(struct inode *inode); |
| 3963 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); |
Stefan Behrens | dd5f961 | 2013-08-15 17:11:20 +0200 | [diff] [blame] | 3964 | int btrfs_is_empty_uuid(u8 *uuid); |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 3965 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
| 3966 | struct btrfs_ioctl_defrag_range_args *range, |
| 3967 | u64 newer_than, unsigned long max_pages); |
Stefan Behrens | 5af3e8c | 2012-08-01 18:56:49 +0200 | [diff] [blame] | 3968 | void btrfs_get_block_group_info(struct list_head *groups_list, |
| 3969 | struct btrfs_ioctl_space_info *space); |
Stefan Behrens | 35a3621 | 2013-08-14 18:12:25 +0200 | [diff] [blame] | 3970 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
| 3971 | struct btrfs_ioctl_balance_args *bargs); |
| 3972 | |
Stefan Behrens | 5af3e8c | 2012-08-01 18:56:49 +0200 | [diff] [blame] | 3973 | |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3974 | /* file.c */ |
Miao Xie | 9247f31 | 2012-11-26 09:24:43 +0000 | [diff] [blame] | 3975 | int btrfs_auto_defrag_init(void); |
| 3976 | void btrfs_auto_defrag_exit(void); |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 3977 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
| 3978 | struct inode *inode); |
| 3979 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
Miao Xie | 26176e7 | 2012-11-26 09:26:20 +0000 | [diff] [blame] | 3980 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
Josef Bacik | 02c24a8 | 2011-07-16 20:44:56 -0400 | [diff] [blame] | 3981 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
Josef Bacik | 7014cdb | 2012-08-30 20:06:49 -0400 | [diff] [blame] | 3982 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
| 3983 | int skip_pinned); |
Alexey Dobriyan | 828c095 | 2009-10-01 15:43:56 -0700 | [diff] [blame] | 3984 | extern const struct file_operations btrfs_file_operations; |
Josef Bacik | 5dc562c | 2012-08-17 13:14:17 -0400 | [diff] [blame] | 3985 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
| 3986 | struct btrfs_root *root, struct inode *inode, |
| 3987 | struct btrfs_path *path, u64 start, u64 end, |
Filipe David Borba Manana | 1acae57 | 2014-01-07 11:42:27 +0000 | [diff] [blame] | 3988 | u64 *drop_end, int drop_cache, |
| 3989 | int replace_extent, |
| 3990 | u32 extent_item_size, |
| 3991 | int *key_inserted); |
Josef Bacik | 5dc562c | 2012-08-17 13:14:17 -0400 | [diff] [blame] | 3992 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
| 3993 | struct btrfs_root *root, struct inode *inode, u64 start, |
Josef Bacik | 2671485 | 2012-08-29 12:24:27 -0400 | [diff] [blame] | 3994 | u64 end, int drop_cache); |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 3995 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 3996 | struct inode *inode, u64 start, u64 end); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3997 | int btrfs_release_file(struct inode *inode, struct file *file); |
Josef Bacik | be1a12a | 2011-04-06 13:05:22 -0400 | [diff] [blame] | 3998 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, |
| 3999 | struct page **pages, size_t num_pages, |
| 4000 | loff_t pos, size_t write_bytes, |
| 4001 | struct extent_state **cached); |
Filipe Manana | 728404d | 2014-10-10 09:43:11 +0100 | [diff] [blame] | 4002 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 4003 | |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 4004 | /* tree-defrag.c */ |
| 4005 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 4006 | struct btrfs_root *root); |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 4007 | |
| 4008 | /* sysfs.c */ |
| 4009 | int btrfs_init_sysfs(void); |
| 4010 | void btrfs_exit_sysfs(void); |
Jeff Mahoney | 5ac1d20 | 2013-11-01 13:06:58 -0400 | [diff] [blame] | 4011 | int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info); |
| 4012 | void btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info); |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 4013 | |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 4014 | /* xattr.c */ |
| 4015 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
Josef Bacik | 6099afe | 2008-07-24 12:16:03 -0400 | [diff] [blame] | 4016 | |
Chris Mason | edbd8d4 | 2007-12-21 16:27:24 -0500 | [diff] [blame] | 4017 | /* super.c */ |
Christoph Hellwig | edf24ab | 2008-06-10 10:40:29 -0400 | [diff] [blame] | 4018 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 4019 | int btrfs_sync_fs(struct super_block *sb, int wait); |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 4020 | |
| 4021 | #ifdef CONFIG_PRINTK |
| 4022 | __printf(2, 3) |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 4023 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 4024 | #else |
| 4025 | static inline __printf(2, 3) |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 4026 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 4027 | { |
| 4028 | } |
| 4029 | #endif |
| 4030 | |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 4031 | #define btrfs_emerg(fs_info, fmt, args...) \ |
| 4032 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) |
| 4033 | #define btrfs_alert(fs_info, fmt, args...) \ |
| 4034 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) |
| 4035 | #define btrfs_crit(fs_info, fmt, args...) \ |
| 4036 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) |
| 4037 | #define btrfs_err(fs_info, fmt, args...) \ |
| 4038 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) |
| 4039 | #define btrfs_warn(fs_info, fmt, args...) \ |
| 4040 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) |
| 4041 | #define btrfs_notice(fs_info, fmt, args...) \ |
| 4042 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) |
| 4043 | #define btrfs_info(fs_info, fmt, args...) \ |
| 4044 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) |
Frank Holton | 27a0dd6 | 2013-11-12 19:22:53 -0500 | [diff] [blame] | 4045 | |
| 4046 | #ifdef DEBUG |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 4047 | #define btrfs_debug(fs_info, fmt, args...) \ |
| 4048 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) |
Frank Holton | 27a0dd6 | 2013-11-12 19:22:53 -0500 | [diff] [blame] | 4049 | #else |
| 4050 | #define btrfs_debug(fs_info, fmt, args...) \ |
| 4051 | no_printk(KERN_DEBUG fmt, ##args) |
| 4052 | #endif |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 4053 | |
Josef Bacik | 2e17c7c | 2013-08-26 16:53:15 -0400 | [diff] [blame] | 4054 | #ifdef CONFIG_BTRFS_ASSERT |
| 4055 | |
David Sterba | c0d19e2 | 2015-04-24 19:11:57 +0200 | [diff] [blame] | 4056 | __cold |
Josef Bacik | 2e17c7c | 2013-08-26 16:53:15 -0400 | [diff] [blame] | 4057 | static inline void assfail(char *expr, char *file, int line) |
| 4058 | { |
Frank Holton | efe120a | 2013-12-20 11:37:06 -0500 | [diff] [blame] | 4059 | pr_err("BTRFS: assertion failed: %s, file: %s, line: %d", |
Josef Bacik | 2e17c7c | 2013-08-26 16:53:15 -0400 | [diff] [blame] | 4060 | expr, file, line); |
| 4061 | BUG(); |
| 4062 | } |
| 4063 | |
| 4064 | #define ASSERT(expr) \ |
| 4065 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) |
| 4066 | #else |
| 4067 | #define ASSERT(expr) ((void)0) |
| 4068 | #endif |
| 4069 | |
| 4070 | #define btrfs_assert() |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 4071 | __printf(5, 6) |
David Sterba | c0d19e2 | 2015-04-24 19:11:57 +0200 | [diff] [blame] | 4072 | __cold |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 4073 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
Jeff Mahoney | 4da3511 | 2012-03-01 14:57:30 +0100 | [diff] [blame] | 4074 | unsigned int line, int errno, const char *fmt, ...); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 4075 | |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 4076 | |
David Sterba | c0d19e2 | 2015-04-24 19:11:57 +0200 | [diff] [blame] | 4077 | __cold |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 4078 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
| 4079 | struct btrfs_root *root, const char *function, |
| 4080 | unsigned int line, int errno); |
| 4081 | |
Mitch Harder | 2b0ce2c | 2012-07-24 11:58:43 -0600 | [diff] [blame] | 4082 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
| 4083 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) |
| 4084 | |
| 4085 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, |
| 4086 | u64 flag) |
| 4087 | { |
| 4088 | struct btrfs_super_block *disk_super; |
| 4089 | u64 features; |
| 4090 | |
| 4091 | disk_super = fs_info->super_copy; |
| 4092 | features = btrfs_super_incompat_flags(disk_super); |
| 4093 | if (!(features & flag)) { |
Miao Xie | ceda086 | 2013-04-11 10:30:16 +0000 | [diff] [blame] | 4094 | spin_lock(&fs_info->super_lock); |
| 4095 | features = btrfs_super_incompat_flags(disk_super); |
| 4096 | if (!(features & flag)) { |
| 4097 | features |= flag; |
| 4098 | btrfs_set_super_incompat_flags(disk_super, features); |
Frank Holton | efe120a | 2013-12-20 11:37:06 -0500 | [diff] [blame] | 4099 | btrfs_info(fs_info, "setting %llu feature flag", |
Miao Xie | ceda086 | 2013-04-11 10:30:16 +0000 | [diff] [blame] | 4100 | flag); |
| 4101 | } |
| 4102 | spin_unlock(&fs_info->super_lock); |
Mitch Harder | 2b0ce2c | 2012-07-24 11:58:43 -0600 | [diff] [blame] | 4103 | } |
| 4104 | } |
| 4105 | |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 4106 | #define btrfs_fs_incompat(fs_info, opt) \ |
| 4107 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) |
| 4108 | |
| 4109 | static inline int __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
| 4110 | { |
| 4111 | struct btrfs_super_block *disk_super; |
| 4112 | disk_super = fs_info->super_copy; |
| 4113 | return !!(btrfs_super_incompat_flags(disk_super) & flag); |
| 4114 | } |
| 4115 | |
David Sterba | 005d642 | 2012-09-18 07:52:32 -0600 | [diff] [blame] | 4116 | /* |
| 4117 | * Call btrfs_abort_transaction as early as possible when an error condition is |
| 4118 | * detected, that way the exact line number is reported. |
| 4119 | */ |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 4120 | #define btrfs_abort_transaction(trans, root, errno) \ |
| 4121 | do { \ |
David Sterba | 1a9a8a7 | 2015-04-24 19:11:54 +0200 | [diff] [blame] | 4122 | /* Report first abort since mount */ \ |
| 4123 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ |
| 4124 | &((root)->fs_info->fs_state))) { \ |
| 4125 | WARN(1, KERN_DEBUG \ |
| 4126 | "BTRFS: Transaction aborted (error %d)\n", \ |
| 4127 | (errno)); \ |
| 4128 | } \ |
| 4129 | __btrfs_abort_transaction((trans), (root), __func__, \ |
| 4130 | __LINE__, (errno)); \ |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 4131 | } while (0) |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 4132 | |
| 4133 | #define btrfs_std_error(fs_info, errno) \ |
| 4134 | do { \ |
| 4135 | if ((errno)) \ |
Jeff Mahoney | 4da3511 | 2012-03-01 14:57:30 +0100 | [diff] [blame] | 4136 | __btrfs_std_error((fs_info), __func__, \ |
| 4137 | __LINE__, (errno), NULL); \ |
| 4138 | } while (0) |
| 4139 | |
| 4140 | #define btrfs_error(fs_info, errno, fmt, args...) \ |
| 4141 | do { \ |
| 4142 | __btrfs_std_error((fs_info), __func__, __LINE__, \ |
| 4143 | (errno), fmt, ##args); \ |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 4144 | } while (0) |
Josef Bacik | 33268ea | 2008-07-24 12:16:36 -0400 | [diff] [blame] | 4145 | |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 4146 | __printf(5, 6) |
David Sterba | c0d19e2 | 2015-04-24 19:11:57 +0200 | [diff] [blame] | 4147 | __cold |
Jeff Mahoney | 8c34293 | 2011-10-03 23:22:31 -0400 | [diff] [blame] | 4148 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, |
| 4149 | unsigned int line, int errno, const char *fmt, ...); |
| 4150 | |
Eric Sandeen | aa43a17 | 2013-01-31 00:54:55 +0000 | [diff] [blame] | 4151 | /* |
| 4152 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic |
| 4153 | * will panic(). Otherwise we BUG() here. |
| 4154 | */ |
Jeff Mahoney | 8c34293 | 2011-10-03 23:22:31 -0400 | [diff] [blame] | 4155 | #define btrfs_panic(fs_info, errno, fmt, args...) \ |
| 4156 | do { \ |
Eric Sandeen | aa43a17 | 2013-01-31 00:54:55 +0000 | [diff] [blame] | 4157 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ |
| 4158 | BUG(); \ |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 4159 | } while (0) |
| 4160 | |
| 4161 | /* acl.c */ |
| 4162 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
Christoph Hellwig | 4e34e71 | 2011-07-23 17:37:31 +0200 | [diff] [blame] | 4163 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
Christoph Hellwig | 996a710 | 2013-12-20 05:16:43 -0800 | [diff] [blame] | 4164 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 4165 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
| 4166 | struct inode *inode, struct inode *dir); |
Li Zefan | 9b89d95 | 2011-07-14 03:17:39 +0000 | [diff] [blame] | 4167 | #else |
Linus Torvalds | ed8f373 | 2011-08-02 21:14:05 -1000 | [diff] [blame] | 4168 | #define btrfs_get_acl NULL |
Christoph Hellwig | 996a710 | 2013-12-20 05:16:43 -0800 | [diff] [blame] | 4169 | #define btrfs_set_acl NULL |
Li Zefan | 9b89d95 | 2011-07-14 03:17:39 +0000 | [diff] [blame] | 4170 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
| 4171 | struct inode *inode, struct inode *dir) |
| 4172 | { |
| 4173 | return 0; |
| 4174 | } |
Li Zefan | 9b89d95 | 2011-07-14 03:17:39 +0000 | [diff] [blame] | 4175 | #endif |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 4176 | |
| 4177 | /* relocation.c */ |
| 4178 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); |
| 4179 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
| 4180 | struct btrfs_root *root); |
| 4181 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, |
| 4182 | struct btrfs_root *root); |
| 4183 | int btrfs_recover_relocation(struct btrfs_root *root); |
| 4184 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); |
Josef Bacik | 83d4cfd | 2013-08-30 15:09:51 -0400 | [diff] [blame] | 4185 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
| 4186 | struct btrfs_root *root, struct extent_buffer *buf, |
| 4187 | struct extent_buffer *cow); |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 4188 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, |
| 4189 | struct btrfs_pending_snapshot *pending, |
| 4190 | u64 *bytes_to_reserve); |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 4191 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 4192 | struct btrfs_pending_snapshot *pending); |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 4193 | |
| 4194 | /* scrub.c */ |
Stefan Behrens | aa1b8cd | 2012-11-05 17:03:39 +0100 | [diff] [blame] | 4195 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
| 4196 | u64 end, struct btrfs_scrub_progress *progress, |
Stefan Behrens | 63a212a | 2012-11-05 18:29:28 +0100 | [diff] [blame] | 4197 | int readonly, int is_dev_replace); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 4198 | void btrfs_scrub_pause(struct btrfs_root *root); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 4199 | void btrfs_scrub_continue(struct btrfs_root *root); |
Stefan Behrens | aa1b8cd | 2012-11-05 17:03:39 +0100 | [diff] [blame] | 4200 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
| 4201 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, |
| 4202 | struct btrfs_device *dev); |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 4203 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, |
| 4204 | struct btrfs_scrub_progress *progress); |
| 4205 | |
Miao Xie | c404e0d | 2014-01-30 16:46:55 +0800 | [diff] [blame] | 4206 | /* dev-replace.c */ |
| 4207 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); |
| 4208 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); |
Miao Xie | 4245215 | 2014-11-25 16:39:28 +0800 | [diff] [blame] | 4209 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
| 4210 | |
| 4211 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) |
| 4212 | { |
| 4213 | btrfs_bio_counter_sub(fs_info, 1); |
| 4214 | } |
Miao Xie | c404e0d | 2014-01-30 16:46:55 +0800 | [diff] [blame] | 4215 | |
Arne Jansen | 7414a03 | 2011-05-23 14:33:49 +0200 | [diff] [blame] | 4216 | /* reada.c */ |
| 4217 | struct reada_control { |
| 4218 | struct btrfs_root *root; /* tree to prefetch */ |
| 4219 | struct btrfs_key key_start; |
| 4220 | struct btrfs_key key_end; /* exclusive */ |
| 4221 | atomic_t elems; |
| 4222 | struct kref refcnt; |
| 4223 | wait_queue_head_t wait; |
| 4224 | }; |
| 4225 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, |
| 4226 | struct btrfs_key *start, struct btrfs_key *end); |
| 4227 | int btrfs_reada_wait(void *handle); |
| 4228 | void btrfs_reada_detach(void *handle); |
| 4229 | int btree_readahead_hook(struct btrfs_root *root, struct extent_buffer *eb, |
| 4230 | u64 start, int err); |
| 4231 | |
Jan Schmidt | 95a0607 | 2012-05-29 17:06:54 +0200 | [diff] [blame] | 4232 | static inline int is_fstree(u64 rootid) |
| 4233 | { |
| 4234 | if (rootid == BTRFS_FS_TREE_OBJECTID || |
Qu Wenruo | e09fe2d | 2015-02-27 16:24:23 +0800 | [diff] [blame] | 4235 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
| 4236 | !btrfs_qgroup_level(rootid))) |
Jan Schmidt | 95a0607 | 2012-05-29 17:06:54 +0200 | [diff] [blame] | 4237 | return 1; |
| 4238 | return 0; |
| 4239 | } |
David Sterba | 210549e | 2013-02-09 23:38:06 +0000 | [diff] [blame] | 4240 | |
| 4241 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) |
| 4242 | { |
| 4243 | return signal_pending(current); |
| 4244 | } |
| 4245 | |
Josef Bacik | aaedb55 | 2013-10-11 14:44:09 -0400 | [diff] [blame] | 4246 | /* Sanity test specific functions */ |
| 4247 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
| 4248 | void btrfs_test_destroy_inode(struct inode *inode); |
| 4249 | #endif |
David Sterba | 210549e | 2013-02-09 23:38:06 +0000 | [diff] [blame] | 4250 | |
David Sterba | fccb84c | 2014-09-29 23:53:21 +0200 | [diff] [blame] | 4251 | static inline int btrfs_test_is_dummy_root(struct btrfs_root *root) |
| 4252 | { |
| 4253 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
| 4254 | if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state))) |
| 4255 | return 1; |
| 4256 | #endif |
| 4257 | return 0; |
| 4258 | } |
| 4259 | |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 4260 | #endif |