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> |
Chris Mason | d1310b2 | 2008-01-24 16:13:08 -0500 | [diff] [blame] | 36 | #include "extent_io.h" |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 37 | #include "extent_map.h" |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 38 | #include "async-thread.h" |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 39 | |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 40 | struct btrfs_trans_handle; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 41 | struct btrfs_transaction; |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 42 | struct btrfs_pending_snapshot; |
Chris Mason | 35b7e47 | 2007-05-02 15:53:43 -0400 | [diff] [blame] | 43 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
| 44 | extern struct kmem_cache *btrfs_transaction_cachep; |
| 45 | extern struct kmem_cache *btrfs_bit_radix_cachep; |
Chris Mason | 2c90e5d | 2007-04-02 10:50:19 -0400 | [diff] [blame] | 46 | extern struct kmem_cache *btrfs_path_cachep; |
Josef Bacik | dc89e98 | 2011-01-28 17:05:48 -0500 | [diff] [blame] | 47 | extern struct kmem_cache *btrfs_free_space_cachep; |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 48 | struct btrfs_ordered_sum; |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 49 | |
Josef Bacik | 294e30f | 2013-10-09 12:00:56 -0400 | [diff] [blame] | 50 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
| 51 | #define STATIC noinline |
| 52 | #else |
| 53 | #define STATIC static noinline |
| 54 | #endif |
| 55 | |
Zach Brown | cdb4c57 | 2013-02-20 00:55:13 +0000 | [diff] [blame] | 56 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 57 | |
Stefan Behrens | 72d7aef | 2012-11-06 14:57:46 +0100 | [diff] [blame] | 58 | #define BTRFS_MAX_MIRRORS 3 |
Stefan Behrens | 94598ba | 2012-03-27 14:21:26 -0400 | [diff] [blame] | 59 | |
Chris Mason | 4008c04 | 2009-02-12 14:09:45 -0500 | [diff] [blame] | 60 | #define BTRFS_MAX_LEVEL 8 |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 61 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 62 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
| 63 | |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 64 | /* |
| 65 | * files bigger than this get some pre-flushing when they are added |
| 66 | * to the ordered operations list. That way we limit the total |
| 67 | * work done by the commit |
| 68 | */ |
| 69 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) |
| 70 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 71 | /* holds pointers to all of the tree roots */ |
Chris Mason | 6407bf6 | 2007-03-27 06:33:00 -0400 | [diff] [blame] | 72 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 73 | |
| 74 | /* stores information about which extents are in use, and reference counts */ |
Chris Mason | 0cf6c62 | 2007-06-09 09:22:25 -0400 | [diff] [blame] | 75 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 76 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 77 | /* |
| 78 | * chunk tree stores translations from logical -> physical block numbering |
| 79 | * the super block points to the chunk tree |
| 80 | */ |
Chris Mason | e085def | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 81 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 82 | |
| 83 | /* |
| 84 | * stores information about which areas of a given device are in use. |
| 85 | * one per device. The tree of tree roots points to the device tree |
| 86 | */ |
Chris Mason | e085def | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 87 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
| 88 | |
| 89 | /* one per subvolume, storing files and directories */ |
| 90 | #define BTRFS_FS_TREE_OBJECTID 5ULL |
| 91 | |
| 92 | /* directory objectid inside the root tree */ |
| 93 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 94 | |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 95 | /* holds checksums of all the data extents */ |
| 96 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL |
| 97 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 98 | /* holds quota configuration and tracking */ |
| 99 | #define BTRFS_QUOTA_TREE_OBJECTID 8ULL |
| 100 | |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 101 | /* for storing items that use the BTRFS_UUID_KEY* types */ |
| 102 | #define BTRFS_UUID_TREE_OBJECTID 9ULL |
| 103 | |
David Sterba | 60b6297 | 2013-04-30 17:29:29 +0000 | [diff] [blame] | 104 | /* for storing balance parameters in the root tree */ |
| 105 | #define BTRFS_BALANCE_OBJECTID -4ULL |
| 106 | |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 107 | /* orhpan objectid for tracking unlinked/truncated files */ |
| 108 | #define BTRFS_ORPHAN_OBJECTID -5ULL |
| 109 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 110 | /* does write ahead logging to speed up fsyncs */ |
| 111 | #define BTRFS_TREE_LOG_OBJECTID -6ULL |
| 112 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL |
| 113 | |
Zheng Yan | e465768 | 2008-09-26 10:04:53 -0400 | [diff] [blame] | 114 | /* for space balancing */ |
| 115 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL |
| 116 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL |
| 117 | |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 118 | /* |
| 119 | * extent checksums all have this objectid |
| 120 | * this allows them to share the logging tree |
| 121 | * for fsyncs |
| 122 | */ |
| 123 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL |
| 124 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 125 | /* For storing free space cache */ |
| 126 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL |
| 127 | |
Li Zefan | 82d5902 | 2011-04-20 10:33:24 +0800 | [diff] [blame] | 128 | /* |
Wang Sheng-Hui | 527a136 | 2012-09-06 13:33:37 +0800 | [diff] [blame] | 129 | * The inode number assigned to the special inode for storing |
Li Zefan | 82d5902 | 2011-04-20 10:33:24 +0800 | [diff] [blame] | 130 | * free ino cache |
| 131 | */ |
| 132 | #define BTRFS_FREE_INO_OBJECTID -12ULL |
| 133 | |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 134 | /* dummy objectid represents multiple objectids */ |
| 135 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL |
| 136 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 137 | /* |
Zheng Yan | 6527cdb | 2008-09-05 16:43:53 -0400 | [diff] [blame] | 138 | * All files have objectids in this range. |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 139 | */ |
Chris Mason | f6dbff5 | 2007-12-13 11:13:32 -0500 | [diff] [blame] | 140 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
Zheng Yan | 6527cdb | 2008-09-05 16:43:53 -0400 | [diff] [blame] | 141 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 142 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
Chris Mason | 3768f36 | 2007-03-13 16:47:54 -0400 | [diff] [blame] | 143 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 144 | |
| 145 | /* |
| 146 | * the device items go into the chunk tree. The key is in the form |
| 147 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] |
| 148 | */ |
| 149 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL |
| 150 | |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 151 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
| 152 | |
| 153 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 |
| 154 | |
Geert Uytterhoeven | 6e71c47 | 2013-08-20 13:20:08 +0200 | [diff] [blame] | 155 | #define BTRFS_DEV_REPLACE_DEVID 0ULL |
Stefan Behrens | e93c89c | 2012-11-05 17:33:06 +0100 | [diff] [blame] | 156 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 157 | /* |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 158 | * the max metadata block size. This limit is somewhat artificial, |
| 159 | * but the memmove costs go through the roof for larger blocks. |
| 160 | */ |
| 161 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 |
| 162 | |
| 163 | /* |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 164 | * we can actually store much bigger names, but lets not confuse the rest |
| 165 | * of linux |
| 166 | */ |
| 167 | #define BTRFS_NAME_LEN 255 |
| 168 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 169 | /* |
| 170 | * Theoretical limit is larger, but we keep this down to a sane |
| 171 | * value. That should limit greatly the possibility of collisions on |
| 172 | * inode ref items. |
| 173 | */ |
| 174 | #define BTRFS_LINK_MAX 65535U |
| 175 | |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 176 | /* 32 bytes in various csum fields */ |
| 177 | #define BTRFS_CSUM_SIZE 32 |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 178 | |
| 179 | /* csum types */ |
| 180 | #define BTRFS_CSUM_TYPE_CRC32 0 |
| 181 | |
| 182 | static int btrfs_csum_sizes[] = { 4, 0 }; |
| 183 | |
Chris Mason | 509659c | 2007-05-10 12:36:17 -0400 | [diff] [blame] | 184 | /* four bytes for CRC32 */ |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 185 | #define BTRFS_EMPTY_DIR_SIZE 0 |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 186 | |
Stefan Behrens | 29a8d9a | 2012-11-06 14:16:24 +0100 | [diff] [blame] | 187 | /* spefic to btrfs_map_block(), therefore not in include/linux/blk_types.h */ |
| 188 | #define REQ_GET_READ_MIRRORS (1 << 30) |
| 189 | |
Chris Mason | fabb568 | 2007-06-07 22:13:21 -0400 | [diff] [blame] | 190 | #define BTRFS_FT_UNKNOWN 0 |
| 191 | #define BTRFS_FT_REG_FILE 1 |
| 192 | #define BTRFS_FT_DIR 2 |
| 193 | #define BTRFS_FT_CHRDEV 3 |
| 194 | #define BTRFS_FT_BLKDEV 4 |
| 195 | #define BTRFS_FT_FIFO 5 |
| 196 | #define BTRFS_FT_SOCK 6 |
| 197 | #define BTRFS_FT_SYMLINK 7 |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 198 | #define BTRFS_FT_XATTR 8 |
| 199 | #define BTRFS_FT_MAX 9 |
Chris Mason | fabb568 | 2007-06-07 22:13:21 -0400 | [diff] [blame] | 200 | |
Stefan Behrens | 3d136a1 | 2012-02-03 11:20:04 +0100 | [diff] [blame] | 201 | /* ioprio of readahead is set to idle */ |
| 202 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) |
| 203 | |
Miao Xie | e2d8452 | 2013-01-29 10:09:20 +0000 | [diff] [blame] | 204 | #define BTRFS_DIRTY_METADATA_THRESH (32 * 1024 * 1024) |
| 205 | |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 206 | /* |
Wu Fengguang | d4a7894 | 2009-04-02 16:46:06 -0400 | [diff] [blame] | 207 | * The key defines the order in the tree, and so it also defines (optimal) |
| 208 | * block layout. |
| 209 | * |
| 210 | * objectid corresponds to the inode number. |
| 211 | * |
| 212 | * type tells us things about the object, and is a kind of stream selector. |
| 213 | * so for a given inode, keys with type of 1 might refer to the inode data, |
| 214 | * type of 2 may point to file data in the btree and type == 3 may point to |
| 215 | * extents. |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 216 | * |
| 217 | * offset is the starting byte offset for this key in the stream. |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 218 | * |
| 219 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always |
| 220 | * in cpu native order. Otherwise they are identical and their sizes |
| 221 | * should be the same (ie both packed) |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 222 | */ |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 223 | struct btrfs_disk_key { |
| 224 | __le64 objectid; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 225 | u8 type; |
Chris Mason | 70b2bef | 2007-04-17 15:39:32 -0400 | [diff] [blame] | 226 | __le64 offset; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 227 | } __attribute__ ((__packed__)); |
| 228 | |
| 229 | struct btrfs_key { |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 230 | u64 objectid; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 231 | u8 type; |
Chris Mason | 70b2bef | 2007-04-17 15:39:32 -0400 | [diff] [blame] | 232 | u64 offset; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 233 | } __attribute__ ((__packed__)); |
| 234 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 235 | struct btrfs_mapping_tree { |
| 236 | struct extent_map_tree map_tree; |
| 237 | }; |
| 238 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 239 | struct btrfs_dev_item { |
| 240 | /* the internal btrfs device id */ |
| 241 | __le64 devid; |
| 242 | |
| 243 | /* size of the device */ |
| 244 | __le64 total_bytes; |
| 245 | |
| 246 | /* bytes used */ |
| 247 | __le64 bytes_used; |
| 248 | |
| 249 | /* optimal io alignment for this device */ |
| 250 | __le32 io_align; |
| 251 | |
| 252 | /* optimal io width for this device */ |
| 253 | __le32 io_width; |
| 254 | |
| 255 | /* minimal io size for this device */ |
| 256 | __le32 sector_size; |
| 257 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 258 | /* type and info about this device */ |
| 259 | __le64 type; |
| 260 | |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 261 | /* expected generation for this device */ |
| 262 | __le64 generation; |
| 263 | |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 264 | /* |
| 265 | * starting byte of this partition on the device, |
Wu Fengguang | d4a7894 | 2009-04-02 16:46:06 -0400 | [diff] [blame] | 266 | * to allow for stripe alignment in the future |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 267 | */ |
| 268 | __le64 start_offset; |
| 269 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 270 | /* grouping information for allocation decisions */ |
| 271 | __le32 dev_group; |
| 272 | |
| 273 | /* seek speed 0-100 where 100 is fastest */ |
| 274 | u8 seek_speed; |
| 275 | |
| 276 | /* bandwidth 0-100 where 100 is fastest */ |
| 277 | u8 bandwidth; |
| 278 | |
Chris Mason | 0d81ba5 | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 279 | /* btrfs generated uuid for this device */ |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 280 | u8 uuid[BTRFS_UUID_SIZE]; |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 281 | |
| 282 | /* uuid of FS who owns this device */ |
| 283 | u8 fsid[BTRFS_UUID_SIZE]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 284 | } __attribute__ ((__packed__)); |
| 285 | |
| 286 | struct btrfs_stripe { |
| 287 | __le64 devid; |
| 288 | __le64 offset; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 289 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 290 | } __attribute__ ((__packed__)); |
| 291 | |
| 292 | struct btrfs_chunk { |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 293 | /* size of this chunk in bytes */ |
| 294 | __le64 length; |
| 295 | |
| 296 | /* objectid of the root referencing this chunk */ |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 297 | __le64 owner; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 298 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 299 | __le64 stripe_len; |
| 300 | __le64 type; |
| 301 | |
| 302 | /* optimal io alignment for this chunk */ |
| 303 | __le32 io_align; |
| 304 | |
| 305 | /* optimal io width for this chunk */ |
| 306 | __le32 io_width; |
| 307 | |
| 308 | /* minimal io size for this chunk */ |
| 309 | __le32 sector_size; |
| 310 | |
| 311 | /* 2^16 stripes is quite a lot, a second limit is the size of a single |
| 312 | * item in the btree |
| 313 | */ |
| 314 | __le16 num_stripes; |
Chris Mason | 321aecc | 2008-04-16 10:49:51 -0400 | [diff] [blame] | 315 | |
| 316 | /* sub stripes only matter for raid10 */ |
| 317 | __le16 sub_stripes; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 318 | struct btrfs_stripe stripe; |
| 319 | /* additional stripes go here */ |
| 320 | } __attribute__ ((__packed__)); |
| 321 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 322 | #define BTRFS_FREE_SPACE_EXTENT 1 |
| 323 | #define BTRFS_FREE_SPACE_BITMAP 2 |
| 324 | |
| 325 | struct btrfs_free_space_entry { |
| 326 | __le64 offset; |
| 327 | __le64 bytes; |
| 328 | u8 type; |
| 329 | } __attribute__ ((__packed__)); |
| 330 | |
| 331 | struct btrfs_free_space_header { |
| 332 | struct btrfs_disk_key location; |
| 333 | __le64 generation; |
| 334 | __le64 num_entries; |
| 335 | __le64 num_bitmaps; |
| 336 | } __attribute__ ((__packed__)); |
| 337 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 338 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
| 339 | { |
| 340 | BUG_ON(num_stripes == 0); |
| 341 | return sizeof(struct btrfs_chunk) + |
| 342 | sizeof(struct btrfs_stripe) * (num_stripes - 1); |
| 343 | } |
| 344 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 345 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
| 346 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 347 | |
| 348 | /* |
| 349 | * File system states |
| 350 | */ |
Miao Xie | 87533c4 | 2013-01-29 10:14:48 +0000 | [diff] [blame] | 351 | #define BTRFS_FS_STATE_ERROR 0 |
Miao Xie | dc81cdc | 2013-02-20 23:32:52 -0700 | [diff] [blame] | 352 | #define BTRFS_FS_STATE_REMOUNTING 1 |
David Sterba | 0874881 | 2013-03-12 14:46:08 +0000 | [diff] [blame] | 353 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
Miao Xie | c404e0d | 2014-01-30 16:46:55 +0800 | [diff] [blame] | 354 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 355 | |
Miao Xie | 87533c4 | 2013-01-29 10:14:48 +0000 | [diff] [blame] | 356 | /* Super block flags */ |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 357 | /* Errors detected */ |
| 358 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) |
| 359 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 360 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
| 361 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) |
| 362 | |
| 363 | #define BTRFS_BACKREF_REV_MAX 256 |
| 364 | #define BTRFS_BACKREF_REV_SHIFT 56 |
| 365 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ |
| 366 | BTRFS_BACKREF_REV_SHIFT) |
| 367 | |
| 368 | #define BTRFS_OLD_BACKREF_REV 0 |
| 369 | #define BTRFS_MIXED_BACKREF_REV 1 |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 370 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 371 | /* |
| 372 | * every tree block (leaf or node) starts with this header. |
| 373 | */ |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 374 | struct btrfs_header { |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 375 | /* these first four must match the super block */ |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 376 | u8 csum[BTRFS_CSUM_SIZE]; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 377 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 378 | __le64 bytenr; /* which block this node is supposed to live in */ |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 379 | __le64 flags; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 380 | |
| 381 | /* allowed to be different from the super from here on down */ |
| 382 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 383 | __le64 generation; |
Chris Mason | 4d77567 | 2007-04-20 20:23:12 -0400 | [diff] [blame] | 384 | __le64 owner; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 385 | __le32 nritems; |
Chris Mason | 9a6f11e | 2007-03-27 09:06:38 -0400 | [diff] [blame] | 386 | u8 level; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 387 | } __attribute__ ((__packed__)); |
| 388 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 389 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 390 | sizeof(struct btrfs_header)) / \ |
| 391 | sizeof(struct btrfs_key_ptr)) |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 392 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 393 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
Chris Mason | 236454df | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 394 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
| 395 | sizeof(struct btrfs_item) - \ |
| 396 | sizeof(struct btrfs_file_extent_item)) |
Yan, Zheng | f34f57a | 2009-11-12 09:35:27 +0000 | [diff] [blame] | 397 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
| 398 | sizeof(struct btrfs_item) -\ |
| 399 | sizeof(struct btrfs_dir_item)) |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 400 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 401 | |
| 402 | /* |
| 403 | * this is a very generous portion of the super block, giving us |
| 404 | * room to translate 14 chunks with 3 stripes each. |
| 405 | */ |
| 406 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 |
Chris Mason | 7ae9c09 | 2008-04-18 10:29:49 -0400 | [diff] [blame] | 407 | #define BTRFS_LABEL_SIZE 256 |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 408 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 409 | /* |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 410 | * just in case we somehow lose the roots and are not able to mount, |
| 411 | * we store an array of the roots from previous transactions |
| 412 | * in the super. |
| 413 | */ |
| 414 | #define BTRFS_NUM_BACKUP_ROOTS 4 |
| 415 | struct btrfs_root_backup { |
| 416 | __le64 tree_root; |
| 417 | __le64 tree_root_gen; |
| 418 | |
| 419 | __le64 chunk_root; |
| 420 | __le64 chunk_root_gen; |
| 421 | |
| 422 | __le64 extent_root; |
| 423 | __le64 extent_root_gen; |
| 424 | |
| 425 | __le64 fs_root; |
| 426 | __le64 fs_root_gen; |
| 427 | |
| 428 | __le64 dev_root; |
| 429 | __le64 dev_root_gen; |
| 430 | |
| 431 | __le64 csum_root; |
| 432 | __le64 csum_root_gen; |
| 433 | |
| 434 | __le64 total_bytes; |
| 435 | __le64 bytes_used; |
| 436 | __le64 num_devices; |
| 437 | /* future */ |
Masanari Iida | d142324 | 2012-10-31 15:16:32 +0000 | [diff] [blame] | 438 | __le64 unused_64[4]; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 439 | |
| 440 | u8 tree_root_level; |
| 441 | u8 chunk_root_level; |
| 442 | u8 extent_root_level; |
| 443 | u8 fs_root_level; |
| 444 | u8 dev_root_level; |
| 445 | u8 csum_root_level; |
| 446 | /* future and to align */ |
| 447 | u8 unused_8[10]; |
| 448 | } __attribute__ ((__packed__)); |
| 449 | |
| 450 | /* |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 451 | * the super block basically lists the main trees of the FS |
| 452 | * it currently lacks any block count etc etc |
| 453 | */ |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 454 | struct btrfs_super_block { |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 455 | u8 csum[BTRFS_CSUM_SIZE]; |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 456 | /* the first 4 fields must match struct btrfs_header */ |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 457 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 458 | __le64 bytenr; /* this block number */ |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 459 | __le64 flags; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 460 | |
| 461 | /* allowed to be different from the btrfs_header from here own down */ |
Chris Mason | 3768f36 | 2007-03-13 16:47:54 -0400 | [diff] [blame] | 462 | __le64 magic; |
Chris Mason | 3768f36 | 2007-03-13 16:47:54 -0400 | [diff] [blame] | 463 | __le64 generation; |
| 464 | __le64 root; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 465 | __le64 chunk_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 466 | __le64 log_root; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 467 | |
| 468 | /* this will help find the new super based on the log root */ |
| 469 | __le64 log_root_transid; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 470 | __le64 total_bytes; |
| 471 | __le64 bytes_used; |
Chris Mason | 2e635a2 | 2007-03-21 11:12:56 -0400 | [diff] [blame] | 472 | __le64 root_dir_objectid; |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 473 | __le64 num_devices; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 474 | __le32 sectorsize; |
| 475 | __le32 nodesize; |
| 476 | __le32 leafsize; |
Chris Mason | 87ee04e | 2007-11-30 11:30:34 -0500 | [diff] [blame] | 477 | __le32 stripesize; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 478 | __le32 sys_chunk_array_size; |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 479 | __le64 chunk_root_generation; |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 480 | __le64 compat_flags; |
| 481 | __le64 compat_ro_flags; |
| 482 | __le64 incompat_flags; |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 483 | __le16 csum_type; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 484 | u8 root_level; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 485 | u8 chunk_root_level; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 486 | u8 log_root_level; |
Chris Mason | 0d81ba5 | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 487 | struct btrfs_dev_item dev_item; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 488 | |
Chris Mason | 7ae9c09 | 2008-04-18 10:29:49 -0400 | [diff] [blame] | 489 | char label[BTRFS_LABEL_SIZE]; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 490 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 491 | __le64 cache_generation; |
Stefan Behrens | 2643279 | 2013-08-15 17:11:22 +0200 | [diff] [blame] | 492 | __le64 uuid_tree_generation; |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 493 | |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 494 | /* future expansion */ |
Stefan Behrens | 2643279 | 2013-08-15 17:11:22 +0200 | [diff] [blame] | 495 | __le64 reserved[30]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 496 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 497 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
Chris Mason | cfaa729 | 2007-02-21 17:04:57 -0500 | [diff] [blame] | 498 | } __attribute__ ((__packed__)); |
| 499 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 500 | /* |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 501 | * Compat flags that we support. If any incompat flags are set other than the |
| 502 | * ones specified below then we will fail to mount |
| 503 | */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 504 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 505 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
Josef Bacik | 6737773 | 2010-09-16 16:19:09 -0400 | [diff] [blame] | 506 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
Li Zefan | a6fa6fa | 2010-10-25 15:12:26 +0800 | [diff] [blame] | 507 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 508 | /* |
| 509 | * some patches floated around with a second compression method |
| 510 | * lets save that incompat here for when they do get in |
| 511 | * Note we don't actually support it, we're just reserving the |
| 512 | * number |
| 513 | */ |
| 514 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) |
| 515 | |
| 516 | /* |
| 517 | * older kernels tried to do bigger metadata blocks, but the |
| 518 | * code was pretty buggy. Lets not let them try anymore. |
| 519 | */ |
| 520 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 521 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 522 | #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 523 | #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 524 | #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) |
Josef Bacik | 16e7549 | 2013-10-22 12:18:51 -0400 | [diff] [blame] | 525 | #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 526 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 527 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
Jeff Mahoney | 2eaa055 | 2013-11-15 15:33:55 -0500 | [diff] [blame] | 528 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
| 529 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 530 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL |
Jeff Mahoney | 2eaa055 | 2013-11-15 15:33:55 -0500 | [diff] [blame] | 531 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
| 532 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL |
| 533 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 534 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
| 535 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ |
Josef Bacik | 6737773 | 2010-09-16 16:19:09 -0400 | [diff] [blame] | 536 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
Li Zefan | a6fa6fa | 2010-10-25 15:12:26 +0800 | [diff] [blame] | 537 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 538 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 539 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 540 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 541 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
Josef Bacik | 16e7549 | 2013-10-22 12:18:51 -0400 | [diff] [blame] | 542 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
| 543 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 544 | |
Jeff Mahoney | 2eaa055 | 2013-11-15 15:33:55 -0500 | [diff] [blame] | 545 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
| 546 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) |
| 547 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 548 | |
| 549 | /* |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 550 | * 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] | 551 | * the item in the leaf (relative to the start of the data area) |
| 552 | */ |
Chris Mason | 0783fcf | 2007-03-12 20:12:07 -0400 | [diff] [blame] | 553 | struct btrfs_item { |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 554 | struct btrfs_disk_key key; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 555 | __le32 offset; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 556 | __le32 size; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 557 | } __attribute__ ((__packed__)); |
| 558 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 559 | /* |
| 560 | * leaves have an item area and a data area: |
| 561 | * [item0, item1....itemN] [free space] [dataN...data1, data0] |
| 562 | * |
| 563 | * The data is separate from the items to get the keys closer together |
| 564 | * during searches. |
| 565 | */ |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 566 | struct btrfs_leaf { |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 567 | struct btrfs_header header; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 568 | struct btrfs_item items[]; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 569 | } __attribute__ ((__packed__)); |
| 570 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 571 | /* |
| 572 | * all non-leaf blocks are nodes, they hold only keys and pointers to |
| 573 | * other blocks |
| 574 | */ |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 575 | struct btrfs_key_ptr { |
| 576 | struct btrfs_disk_key key; |
| 577 | __le64 blockptr; |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 578 | __le64 generation; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 579 | } __attribute__ ((__packed__)); |
| 580 | |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 581 | struct btrfs_node { |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 582 | struct btrfs_header header; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 583 | struct btrfs_key_ptr ptrs[]; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 584 | } __attribute__ ((__packed__)); |
| 585 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 586 | /* |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 587 | * btrfs_paths remember the path taken from the root down to the leaf. |
| 588 | * 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] | 589 | * to any other levels that are present. |
| 590 | * |
| 591 | * The slots array records the index of the item or block pointer |
| 592 | * used while walking the tree. |
| 593 | */ |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 594 | struct btrfs_path { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 595 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 596 | int slots[BTRFS_MAX_LEVEL]; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 597 | /* if there is real range locking, this locks field will change */ |
| 598 | int locks[BTRFS_MAX_LEVEL]; |
Chris Mason | 3c69fae | 2007-08-07 15:52:22 -0400 | [diff] [blame] | 599 | int reada; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 600 | /* keep some upper locks as we walk down */ |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 601 | int lowest_level; |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 602 | |
| 603 | /* |
| 604 | * set by btrfs_split_item, tells search_slot to keep all locks |
| 605 | * and to force calls to keep space in the nodes |
| 606 | */ |
Chris Mason | b947343 | 2009-03-13 11:00:37 -0400 | [diff] [blame] | 607 | unsigned int search_for_split:1; |
| 608 | unsigned int keep_locks:1; |
| 609 | unsigned int skip_locking:1; |
| 610 | unsigned int leave_spinning:1; |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 611 | unsigned int search_commit_root:1; |
Josef Bacik | 3f8a18c | 2014-03-28 17:16:01 -0400 | [diff] [blame] | 612 | unsigned int need_commit_sem: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 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 759 | struct btrfs_root_item { |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 760 | struct btrfs_inode_item inode; |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 761 | __le64 generation; |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 762 | __le64 root_dirid; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 763 | __le64 bytenr; |
| 764 | __le64 byte_limit; |
| 765 | __le64 bytes_used; |
Yan Zheng | 80ff385 | 2008-10-30 14:20:02 -0400 | [diff] [blame] | 766 | __le64 last_snapshot; |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 767 | __le64 flags; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 768 | __le32 refs; |
Chris Mason | 5eda7b5 | 2007-06-22 14:16:25 -0400 | [diff] [blame] | 769 | struct btrfs_disk_key drop_progress; |
| 770 | u8 drop_level; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 771 | u8 level; |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 772 | |
| 773 | /* |
| 774 | * The following fields appear after subvol_uuids+subvol_times |
| 775 | * were introduced. |
| 776 | */ |
| 777 | |
| 778 | /* |
| 779 | * This generation number is used to test if the new fields are valid |
| 780 | * and up to date while reading the root item. Everytime the root item |
| 781 | * is written out, the "generation" field is copied into this field. If |
| 782 | * anyone ever mounted the fs with an older kernel, we will have |
| 783 | * mismatching generation values here and thus must invalidate the |
| 784 | * new fields. See btrfs_update_root and btrfs_find_last_root for |
| 785 | * details. |
| 786 | * the offset of generation_v2 is also used as the start for the memset |
| 787 | * when invalidating the fields. |
| 788 | */ |
| 789 | __le64 generation_v2; |
| 790 | u8 uuid[BTRFS_UUID_SIZE]; |
| 791 | u8 parent_uuid[BTRFS_UUID_SIZE]; |
| 792 | u8 received_uuid[BTRFS_UUID_SIZE]; |
| 793 | __le64 ctransid; /* updated when an inode changes */ |
| 794 | __le64 otransid; /* trans when created */ |
| 795 | __le64 stransid; /* trans when sent. non-zero for received subvol */ |
| 796 | __le64 rtransid; /* trans when received. non-zero for received subvol */ |
| 797 | struct btrfs_timespec ctime; |
| 798 | struct btrfs_timespec otime; |
| 799 | struct btrfs_timespec stime; |
| 800 | struct btrfs_timespec rtime; |
| 801 | __le64 reserved[8]; /* for future */ |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 802 | } __attribute__ ((__packed__)); |
| 803 | |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 804 | /* |
| 805 | * this is used for both forward and backward root refs |
| 806 | */ |
| 807 | struct btrfs_root_ref { |
| 808 | __le64 dirid; |
| 809 | __le64 sequence; |
| 810 | __le16 name_len; |
| 811 | } __attribute__ ((__packed__)); |
| 812 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 813 | struct btrfs_disk_balance_args { |
| 814 | /* |
| 815 | * profiles to operate on, single is denoted by |
| 816 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE |
| 817 | */ |
| 818 | __le64 profiles; |
| 819 | |
| 820 | /* usage filter */ |
| 821 | __le64 usage; |
| 822 | |
| 823 | /* devid filter */ |
| 824 | __le64 devid; |
| 825 | |
| 826 | /* devid subset filter [pstart..pend) */ |
| 827 | __le64 pstart; |
| 828 | __le64 pend; |
| 829 | |
| 830 | /* btrfs virtual address space subset filter [vstart..vend) */ |
| 831 | __le64 vstart; |
| 832 | __le64 vend; |
| 833 | |
| 834 | /* |
| 835 | * profile to convert to, single is denoted by |
| 836 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE |
| 837 | */ |
| 838 | __le64 target; |
| 839 | |
| 840 | /* BTRFS_BALANCE_ARGS_* */ |
| 841 | __le64 flags; |
| 842 | |
David Sterba | 7d824b6 | 2014-05-07 17:37:51 +0200 | [diff] [blame^] | 843 | /* BTRFS_BALANCE_ARGS_LIMIT value */ |
| 844 | __le64 limit; |
| 845 | |
| 846 | __le64 unused[7]; |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 847 | } __attribute__ ((__packed__)); |
| 848 | |
| 849 | /* |
| 850 | * store balance parameters to disk so that balance can be properly |
| 851 | * resumed after crash or unmount |
| 852 | */ |
| 853 | struct btrfs_balance_item { |
| 854 | /* BTRFS_BALANCE_* */ |
| 855 | __le64 flags; |
| 856 | |
| 857 | struct btrfs_disk_balance_args data; |
| 858 | struct btrfs_disk_balance_args meta; |
| 859 | struct btrfs_disk_balance_args sys; |
| 860 | |
| 861 | __le64 unused[4]; |
| 862 | } __attribute__ ((__packed__)); |
| 863 | |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 864 | #define BTRFS_FILE_EXTENT_INLINE 0 |
| 865 | #define BTRFS_FILE_EXTENT_REG 1 |
| 866 | #define BTRFS_FILE_EXTENT_PREALLOC 2 |
Chris Mason | 236454df | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 867 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 868 | struct btrfs_file_extent_item { |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 869 | /* |
| 870 | * transaction id that created this extent |
| 871 | */ |
Chris Mason | 71951f3 | 2007-03-27 09:16:29 -0400 | [diff] [blame] | 872 | __le64 generation; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 873 | /* |
| 874 | * max number of bytes to hold this extent in ram |
| 875 | * when we split a compressed extent we can't know how big |
| 876 | * each of the resulting pieces will be. So, this is |
| 877 | * an upper limit on the size of the extent in ram instead of |
| 878 | * an exact limit. |
| 879 | */ |
| 880 | __le64 ram_bytes; |
| 881 | |
| 882 | /* |
| 883 | * 32 bits for the various ways we might encode the data, |
| 884 | * including compression and encryption. If any of these |
| 885 | * are set to something a given disk format doesn't understand |
| 886 | * it is treated like an incompat flag for reading and writing, |
| 887 | * but not for stat. |
| 888 | */ |
| 889 | u8 compression; |
| 890 | u8 encryption; |
| 891 | __le16 other_encoding; /* spare for later use */ |
| 892 | |
| 893 | /* are we inline data or a real extent? */ |
Chris Mason | 236454df | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 894 | u8 type; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 895 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 896 | /* |
| 897 | * disk space consumed by the extent, checksum blocks are included |
| 898 | * in these numbers |
| 899 | */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 900 | __le64 disk_bytenr; |
| 901 | __le64 disk_num_bytes; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 902 | /* |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 903 | * the logical offset in file blocks (no csums) |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 904 | * this extent record is for. This allows a file extent to point |
| 905 | * into the middle of an existing extent on disk, sharing it |
| 906 | * between two snapshots (useful if some bytes in the middle of the |
| 907 | * extent have changed |
| 908 | */ |
| 909 | __le64 offset; |
| 910 | /* |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 911 | * the logical number of file blocks (no csums included). This |
| 912 | * always reflects the size uncompressed and without encoding. |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 913 | */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 914 | __le64 num_bytes; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 915 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 916 | } __attribute__ ((__packed__)); |
| 917 | |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 918 | struct btrfs_csum_item { |
Chris Mason | 509659c | 2007-05-10 12:36:17 -0400 | [diff] [blame] | 919 | u8 csum; |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 920 | } __attribute__ ((__packed__)); |
| 921 | |
Stefan Behrens | 733f4fb | 2012-05-25 16:06:10 +0200 | [diff] [blame] | 922 | struct btrfs_dev_stats_item { |
| 923 | /* |
| 924 | * grow this item struct at the end for future enhancements and keep |
| 925 | * the existing values unchanged |
| 926 | */ |
| 927 | __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; |
| 928 | } __attribute__ ((__packed__)); |
| 929 | |
Stefan Behrens | e922e08 | 2012-11-05 17:26:40 +0100 | [diff] [blame] | 930 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 |
| 931 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 |
| 932 | #define BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED 0 |
| 933 | #define BTRFS_DEV_REPLACE_ITEM_STATE_STARTED 1 |
| 934 | #define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 2 |
| 935 | #define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 3 |
| 936 | #define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 4 |
| 937 | |
| 938 | struct btrfs_dev_replace { |
| 939 | u64 replace_state; /* see #define above */ |
| 940 | u64 time_started; /* seconds since 1-Jan-1970 */ |
| 941 | u64 time_stopped; /* seconds since 1-Jan-1970 */ |
| 942 | atomic64_t num_write_errors; |
| 943 | atomic64_t num_uncorrectable_read_errors; |
| 944 | |
| 945 | u64 cursor_left; |
| 946 | u64 committed_cursor_left; |
| 947 | u64 cursor_left_last_write_of_item; |
| 948 | u64 cursor_right; |
| 949 | |
| 950 | u64 cont_reading_from_srcdev_mode; /* see #define above */ |
| 951 | |
| 952 | int is_valid; |
| 953 | int item_needs_writeback; |
| 954 | struct btrfs_device *srcdev; |
| 955 | struct btrfs_device *tgtdev; |
| 956 | |
| 957 | pid_t lock_owner; |
| 958 | atomic_t nesting_level; |
| 959 | struct mutex lock_finishing_cancel_unmount; |
| 960 | struct mutex lock_management_lock; |
| 961 | struct mutex lock; |
| 962 | |
| 963 | struct btrfs_scrub_progress scrub_progress; |
| 964 | }; |
| 965 | |
Stefan Behrens | a2bff64 | 2012-11-05 17:32:20 +0100 | [diff] [blame] | 966 | struct btrfs_dev_replace_item { |
| 967 | /* |
| 968 | * grow this item struct at the end for future enhancements and keep |
| 969 | * the existing values unchanged |
| 970 | */ |
| 971 | __le64 src_devid; |
| 972 | __le64 cursor_left; |
| 973 | __le64 cursor_right; |
| 974 | __le64 cont_reading_from_srcdev_mode; |
| 975 | |
| 976 | __le64 replace_state; |
| 977 | __le64 time_started; |
| 978 | __le64 time_stopped; |
| 979 | __le64 num_write_errors; |
| 980 | __le64 num_uncorrectable_read_errors; |
| 981 | } __attribute__ ((__packed__)); |
| 982 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 983 | /* different types of block groups (and chunks) */ |
Ilya Dryomov | 52ba692 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 984 | #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) |
| 985 | #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) |
| 986 | #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) |
| 987 | #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) |
| 988 | #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) |
| 989 | #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) |
| 990 | #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) |
Andreas Philipp | 1c89cdd | 2013-05-11 11:12:54 +0000 | [diff] [blame] | 991 | #define BTRFS_BLOCK_GROUP_RAID5 (1ULL << 7) |
| 992 | #define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8) |
David Sterba | 36523e95 | 2014-02-07 14:34:12 +0100 | [diff] [blame] | 993 | #define BTRFS_BLOCK_GROUP_RESERVED (BTRFS_AVAIL_ALLOC_BIT_SINGLE | \ |
| 994 | BTRFS_SPACE_INFO_GLOBAL_RSV) |
Miao Xie | e6ec716 | 2013-01-17 05:38:51 +0000 | [diff] [blame] | 995 | |
| 996 | enum btrfs_raid_types { |
| 997 | BTRFS_RAID_RAID10, |
| 998 | BTRFS_RAID_RAID1, |
| 999 | BTRFS_RAID_DUP, |
| 1000 | BTRFS_RAID_RAID0, |
| 1001 | BTRFS_RAID_SINGLE, |
Chris Mason | e942f88 | 2013-02-20 14:06:05 -0500 | [diff] [blame] | 1002 | BTRFS_RAID_RAID5, |
| 1003 | BTRFS_RAID_RAID6, |
Miao Xie | e6ec716 | 2013-01-17 05:38:51 +0000 | [diff] [blame] | 1004 | BTRFS_NR_RAID_TYPES |
| 1005 | }; |
Chris Mason | 1e2677e | 2007-05-29 16:52:18 -0400 | [diff] [blame] | 1006 | |
Ilya Dryomov | 52ba692 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1007 | #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \ |
| 1008 | BTRFS_BLOCK_GROUP_SYSTEM | \ |
| 1009 | BTRFS_BLOCK_GROUP_METADATA) |
| 1010 | |
| 1011 | #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \ |
| 1012 | BTRFS_BLOCK_GROUP_RAID1 | \ |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1013 | BTRFS_BLOCK_GROUP_RAID5 | \ |
| 1014 | BTRFS_BLOCK_GROUP_RAID6 | \ |
Ilya Dryomov | 52ba692 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1015 | BTRFS_BLOCK_GROUP_DUP | \ |
| 1016 | BTRFS_BLOCK_GROUP_RAID10) |
Ilya Dryomov | a46d11a | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1017 | /* |
| 1018 | * We need a bit for restriper to be able to tell when chunks of type |
| 1019 | * SINGLE are available. This "extended" profile format is used in |
| 1020 | * fs_info->avail_*_alloc_bits (in-memory) and balance item fields |
| 1021 | * (on-disk). The corresponding on-disk bit in chunk.type is reserved |
| 1022 | * to avoid remappings between two formats in future. |
| 1023 | */ |
| 1024 | #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) |
| 1025 | |
David Sterba | 36523e95 | 2014-02-07 14:34:12 +0100 | [diff] [blame] | 1026 | /* |
| 1027 | * A fake block group type that is used to communicate global block reserve |
| 1028 | * size to userspace via the SPACE_INFO ioctl. |
| 1029 | */ |
| 1030 | #define BTRFS_SPACE_INFO_GLOBAL_RSV (1ULL << 49) |
| 1031 | |
Ilya Dryomov | 899c81e | 2012-03-27 17:09:16 +0300 | [diff] [blame] | 1032 | #define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | \ |
| 1033 | BTRFS_AVAIL_ALLOC_BIT_SINGLE) |
| 1034 | |
| 1035 | static inline u64 chunk_to_extended(u64 flags) |
| 1036 | { |
| 1037 | if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0) |
| 1038 | flags |= BTRFS_AVAIL_ALLOC_BIT_SINGLE; |
| 1039 | |
| 1040 | return flags; |
| 1041 | } |
| 1042 | static inline u64 extended_to_chunk(u64 flags) |
| 1043 | { |
| 1044 | return flags & ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; |
| 1045 | } |
| 1046 | |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1047 | struct btrfs_block_group_item { |
| 1048 | __le64 used; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1049 | __le64 chunk_objectid; |
| 1050 | __le64 flags; |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1051 | } __attribute__ ((__packed__)); |
| 1052 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 1053 | /* |
| 1054 | * is subvolume quota turned on? |
| 1055 | */ |
| 1056 | #define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) |
| 1057 | /* |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1058 | * RESCAN is set during the initialization phase |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 1059 | */ |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1060 | #define BTRFS_QGROUP_STATUS_FLAG_RESCAN (1ULL << 1) |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 1061 | /* |
| 1062 | * Some qgroup entries are known to be out of date, |
| 1063 | * either because the configuration has changed in a way that |
| 1064 | * makes a rescan necessary, or because the fs has been mounted |
| 1065 | * with a non-qgroup-aware version. |
| 1066 | * Turning qouta off and on again makes it inconsistent, too. |
| 1067 | */ |
| 1068 | #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) |
| 1069 | |
| 1070 | #define BTRFS_QGROUP_STATUS_VERSION 1 |
| 1071 | |
| 1072 | struct btrfs_qgroup_status_item { |
| 1073 | __le64 version; |
| 1074 | /* |
| 1075 | * the generation is updated during every commit. As older |
| 1076 | * versions of btrfs are not aware of qgroups, it will be |
| 1077 | * possible to detect inconsistencies by checking the |
| 1078 | * generation on mount time |
| 1079 | */ |
| 1080 | __le64 generation; |
| 1081 | |
| 1082 | /* flag definitions see above */ |
| 1083 | __le64 flags; |
| 1084 | |
| 1085 | /* |
| 1086 | * only used during scanning to record the progress |
| 1087 | * of the scan. It contains a logical address |
| 1088 | */ |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1089 | __le64 rescan; |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 1090 | } __attribute__ ((__packed__)); |
| 1091 | |
| 1092 | struct btrfs_qgroup_info_item { |
| 1093 | __le64 generation; |
| 1094 | __le64 rfer; |
| 1095 | __le64 rfer_cmpr; |
| 1096 | __le64 excl; |
| 1097 | __le64 excl_cmpr; |
| 1098 | } __attribute__ ((__packed__)); |
| 1099 | |
| 1100 | /* flags definition for qgroup limits */ |
| 1101 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) |
| 1102 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) |
| 1103 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) |
| 1104 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) |
| 1105 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) |
| 1106 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) |
| 1107 | |
| 1108 | struct btrfs_qgroup_limit_item { |
| 1109 | /* |
| 1110 | * only updated when any of the other values change |
| 1111 | */ |
| 1112 | __le64 flags; |
| 1113 | __le64 max_rfer; |
| 1114 | __le64 max_excl; |
| 1115 | __le64 rsv_rfer; |
| 1116 | __le64 rsv_excl; |
| 1117 | } __attribute__ ((__packed__)); |
| 1118 | |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1119 | struct btrfs_space_info { |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 1120 | spinlock_t lock; |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1121 | |
Josef Bacik | 89a5589 | 2010-10-14 14:52:27 -0400 | [diff] [blame] | 1122 | u64 total_bytes; /* total bytes in the space, |
| 1123 | this doesn't take mirrors into account */ |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 1124 | u64 bytes_used; /* total bytes used, |
Lucas De Marchi | e9c5499 | 2011-04-26 23:28:26 -0700 | [diff] [blame] | 1125 | this doesn't take mirrors into account */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1126 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
| 1127 | transaction finishes */ |
| 1128 | u64 bytes_reserved; /* total bytes the allocator has reserved for |
| 1129 | current allocations */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1130 | u64 bytes_may_use; /* number of bytes that may be used for |
Josef Bacik | 9ed74f2 | 2009-09-11 16:12:44 -0400 | [diff] [blame] | 1131 | delalloc/allocations */ |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 1132 | u64 bytes_readonly; /* total bytes that are read only */ |
| 1133 | |
| 1134 | unsigned int full:1; /* indicates that we cannot allocate any more |
| 1135 | chunks for this space */ |
| 1136 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ |
| 1137 | |
| 1138 | unsigned int flush:1; /* set if we are trying to make space */ |
| 1139 | |
| 1140 | unsigned int force_alloc; /* set if we need to force a chunk |
| 1141 | alloc for this space */ |
| 1142 | |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 1143 | u64 disk_used; /* total bytes used on disk */ |
Josef Bacik | 89a5589 | 2010-10-14 14:52:27 -0400 | [diff] [blame] | 1144 | u64 disk_total; /* total bytes on disk, takes mirrors into |
| 1145 | account */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1146 | |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 1147 | u64 flags; |
| 1148 | |
Chris Mason | 36e39c4 | 2011-03-12 07:08:42 -0500 | [diff] [blame] | 1149 | /* |
Josef Bacik | b150a4f | 2013-06-19 15:00:04 -0400 | [diff] [blame] | 1150 | * bytes_pinned is kept in line with what is actually pinned, as in |
| 1151 | * we've called update_block_group and dropped the bytes_used counter |
| 1152 | * and increased the bytes_pinned counter. However this means that |
| 1153 | * bytes_pinned does not reflect the bytes that will be pinned once the |
| 1154 | * delayed refs are flushed, so this counter is inc'ed everytime we call |
| 1155 | * btrfs_free_extent so it is a realtime count of what will be freed |
| 1156 | * once the transaction is committed. It will be zero'ed everytime the |
| 1157 | * transaction commits. |
| 1158 | */ |
| 1159 | struct percpu_counter total_bytes_pinned; |
| 1160 | |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1161 | struct list_head list; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1162 | |
Miao Xie | 26b47ff | 2014-01-15 20:00:54 +0800 | [diff] [blame] | 1163 | struct rw_semaphore groups_sem; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1164 | /* for block groups in our same type */ |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 1165 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
Josef Bacik | fdb5eff | 2011-06-07 16:07:44 -0400 | [diff] [blame] | 1166 | wait_queue_head_t wait; |
Jeff Mahoney | 6ab0a20 | 2013-11-01 13:07:04 -0400 | [diff] [blame] | 1167 | |
| 1168 | struct kobject kobj; |
| 1169 | struct kobject block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1170 | }; |
| 1171 | |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 1172 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
| 1173 | #define BTRFS_BLOCK_RSV_DELALLOC 2 |
| 1174 | #define BTRFS_BLOCK_RSV_TRANS 3 |
| 1175 | #define BTRFS_BLOCK_RSV_CHUNK 4 |
| 1176 | #define BTRFS_BLOCK_RSV_DELOPS 5 |
| 1177 | #define BTRFS_BLOCK_RSV_EMPTY 6 |
| 1178 | #define BTRFS_BLOCK_RSV_TEMP 7 |
| 1179 | |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1180 | struct btrfs_block_rsv { |
| 1181 | u64 size; |
| 1182 | u64 reserved; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1183 | struct btrfs_space_info *space_info; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1184 | spinlock_t lock; |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 1185 | unsigned short full; |
| 1186 | unsigned short type; |
| 1187 | unsigned short failfast; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1188 | }; |
| 1189 | |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 1190 | /* |
| 1191 | * free clusters are used to claim free space in relatively large chunks, |
| 1192 | * allowing us to do less seeky writes. They are used for all metadata |
| 1193 | * allocations and data allocations in ssd mode. |
| 1194 | */ |
| 1195 | struct btrfs_free_cluster { |
| 1196 | spinlock_t lock; |
| 1197 | spinlock_t refill_lock; |
| 1198 | struct rb_root root; |
| 1199 | |
| 1200 | /* largest extent in this cluster */ |
| 1201 | u64 max_size; |
| 1202 | |
| 1203 | /* first extent starting offset */ |
| 1204 | u64 window_start; |
| 1205 | |
| 1206 | struct btrfs_block_group_cache *block_group; |
| 1207 | /* |
| 1208 | * when a cluster is allocated from a block group, we put the |
| 1209 | * cluster onto a list in the block group so that it can |
| 1210 | * be freed before the block group is freed. |
| 1211 | */ |
| 1212 | struct list_head block_group_list; |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1213 | }; |
| 1214 | |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1215 | enum btrfs_caching_type { |
| 1216 | BTRFS_CACHE_NO = 0, |
| 1217 | BTRFS_CACHE_STARTED = 1, |
Josef Bacik | 291c7d2 | 2011-11-14 13:52:14 -0500 | [diff] [blame] | 1218 | BTRFS_CACHE_FAST = 2, |
| 1219 | BTRFS_CACHE_FINISHED = 3, |
Josef Bacik | 36cce92 | 2013-08-05 11:15:21 -0400 | [diff] [blame] | 1220 | BTRFS_CACHE_ERROR = 4, |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1221 | }; |
| 1222 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1223 | enum btrfs_disk_cache_state { |
| 1224 | BTRFS_DC_WRITTEN = 0, |
| 1225 | BTRFS_DC_ERROR = 1, |
| 1226 | BTRFS_DC_CLEAR = 2, |
| 1227 | BTRFS_DC_SETUP = 3, |
| 1228 | BTRFS_DC_NEED_WRITE = 4, |
| 1229 | }; |
| 1230 | |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1231 | struct btrfs_caching_control { |
| 1232 | struct list_head list; |
| 1233 | struct mutex mutex; |
| 1234 | wait_queue_head_t wait; |
Josef Bacik | bab39bf | 2011-06-30 14:42:28 -0400 | [diff] [blame] | 1235 | struct btrfs_work work; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1236 | struct btrfs_block_group_cache *block_group; |
| 1237 | u64 progress; |
| 1238 | atomic_t count; |
| 1239 | }; |
| 1240 | |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1241 | struct btrfs_block_group_cache { |
| 1242 | struct btrfs_key key; |
| 1243 | struct btrfs_block_group_item item; |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1244 | struct btrfs_fs_info *fs_info; |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1245 | struct inode *inode; |
Chris Mason | c286ac4 | 2008-07-22 23:06:41 -0400 | [diff] [blame] | 1246 | spinlock_t lock; |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 1247 | u64 pinned; |
Zheng Yan | e856981 | 2008-09-26 10:05:48 -0400 | [diff] [blame] | 1248 | u64 reserved; |
Josef Bacik | 1b2da37 | 2009-09-11 16:11:20 -0400 | [diff] [blame] | 1249 | u64 bytes_super; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1250 | u64 flags; |
Josef Bacik | 9630308 | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1251 | u64 sectorsize; |
Josef Bacik | 5b0e95b | 2011-10-06 08:58:24 -0400 | [diff] [blame] | 1252 | u64 cache_generation; |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1253 | |
| 1254 | /* for raid56, this is a full stripe, without parity */ |
| 1255 | unsigned long full_stripe_len; |
| 1256 | |
Mariusz Kozlowski | 0410c94 | 2010-11-20 12:03:07 +0000 | [diff] [blame] | 1257 | unsigned int ro:1; |
| 1258 | unsigned int dirty:1; |
| 1259 | unsigned int iref:1; |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1260 | |
| 1261 | int disk_cache_state; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1262 | |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1263 | /* cache tracking stuff */ |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1264 | int cached; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1265 | struct btrfs_caching_control *caching_ctl; |
| 1266 | u64 last_byte_to_unpin; |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1267 | |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1268 | struct btrfs_space_info *space_info; |
| 1269 | |
| 1270 | /* free space cache stuff */ |
Li Zefan | 34d52cb | 2011-03-29 13:46:06 +0800 | [diff] [blame] | 1271 | struct btrfs_free_space_ctl *free_space_ctl; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1272 | |
| 1273 | /* block group cache stuff */ |
| 1274 | struct rb_node cache_node; |
| 1275 | |
| 1276 | /* for block groups in the same raid type */ |
| 1277 | struct list_head list; |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 1278 | |
| 1279 | /* usage count */ |
| 1280 | atomic_t count; |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 1281 | |
| 1282 | /* List of struct btrfs_free_clusters for this block group. |
| 1283 | * Today it will only have one thing on it, but that may change |
| 1284 | */ |
| 1285 | struct list_head cluster_list; |
Josef Bacik | ea658ba | 2012-09-11 16:57:25 -0400 | [diff] [blame] | 1286 | |
| 1287 | /* For delayed block group creation */ |
| 1288 | struct list_head new_bg_list; |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1289 | }; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1290 | |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 1291 | /* delayed seq elem */ |
| 1292 | struct seq_list { |
| 1293 | struct list_head list; |
| 1294 | u64 seq; |
| 1295 | }; |
| 1296 | |
Josef Bacik | 5d80366 | 2013-02-07 16:06:02 -0500 | [diff] [blame] | 1297 | enum btrfs_orphan_cleanup_state { |
| 1298 | ORPHAN_CLEANUP_STARTED = 1, |
| 1299 | ORPHAN_CLEANUP_DONE = 2, |
| 1300 | }; |
| 1301 | |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1302 | /* used by the raid56 code to lock stripes for read/modify/write */ |
| 1303 | struct btrfs_stripe_hash { |
| 1304 | struct list_head hash_list; |
| 1305 | wait_queue_head_t wait; |
| 1306 | spinlock_t lock; |
| 1307 | }; |
| 1308 | |
| 1309 | /* used by the raid56 code to lock stripes for read/modify/write */ |
| 1310 | struct btrfs_stripe_hash_table { |
Chris Mason | 4ae10b3 | 2013-01-31 14:42:09 -0500 | [diff] [blame] | 1311 | struct list_head stripe_cache; |
| 1312 | spinlock_t cache_lock; |
| 1313 | int cache_size; |
| 1314 | struct btrfs_stripe_hash table[]; |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1315 | }; |
| 1316 | |
| 1317 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 |
| 1318 | |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 1319 | /* fs_info */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1320 | struct reloc_control; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1321 | struct btrfs_device; |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 1322 | struct btrfs_fs_devices; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1323 | struct btrfs_balance_control; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1324 | struct btrfs_delayed_root; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1325 | struct btrfs_fs_info { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1326 | u8 fsid[BTRFS_FSID_SIZE]; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1327 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1328 | struct btrfs_root *extent_root; |
| 1329 | struct btrfs_root *tree_root; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1330 | struct btrfs_root *chunk_root; |
| 1331 | struct btrfs_root *dev_root; |
Chris Mason | 3de4586 | 2008-11-17 21:02:50 -0500 | [diff] [blame] | 1332 | struct btrfs_root *fs_root; |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 1333 | struct btrfs_root *csum_root; |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1334 | struct btrfs_root *quota_root; |
Stefan Behrens | f7a81ea | 2013-08-15 17:11:19 +0200 | [diff] [blame] | 1335 | struct btrfs_root *uuid_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1336 | |
| 1337 | /* the log root tree is a directory of all the other log roots */ |
| 1338 | struct btrfs_root *log_root_tree; |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 1339 | |
| 1340 | spinlock_t fs_roots_radix_lock; |
Chris Mason | 0f7d52f | 2007-04-09 10:42:37 -0400 | [diff] [blame] | 1341 | struct radix_tree_root fs_roots_radix; |
Chris Mason | 1a5bc16 | 2007-10-15 16:15:26 -0400 | [diff] [blame] | 1342 | |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1343 | /* block group cache stuff */ |
| 1344 | spinlock_t block_group_cache_lock; |
Liu Bo | a1897fd | 2012-12-27 09:01:23 +0000 | [diff] [blame] | 1345 | u64 first_logical_byte; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1346 | struct rb_root block_group_cache_tree; |
| 1347 | |
Josef Bacik | 2bf6475 | 2011-09-26 17:12:22 -0400 | [diff] [blame] | 1348 | /* keep track of unallocated space */ |
| 1349 | spinlock_t free_chunk_lock; |
| 1350 | u64 free_chunk_space; |
| 1351 | |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1352 | struct extent_io_tree freed_extents[2]; |
| 1353 | struct extent_io_tree *pinned_extents; |
Chris Mason | 1a5bc16 | 2007-10-15 16:15:26 -0400 | [diff] [blame] | 1354 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1355 | /* logical->physical extent mapping */ |
| 1356 | struct btrfs_mapping_tree mapping_tree; |
| 1357 | |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1358 | /* |
| 1359 | * block reservation for extent, checksum, root tree and |
| 1360 | * delayed dir index item |
| 1361 | */ |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1362 | struct btrfs_block_rsv global_block_rsv; |
| 1363 | /* block reservation for delay allocation */ |
| 1364 | struct btrfs_block_rsv delalloc_block_rsv; |
| 1365 | /* block reservation for metadata operations */ |
| 1366 | struct btrfs_block_rsv trans_block_rsv; |
| 1367 | /* block reservation for chunk tree */ |
| 1368 | struct btrfs_block_rsv chunk_block_rsv; |
Josef Bacik | 6d668dd | 2011-11-03 22:54:25 -0400 | [diff] [blame] | 1369 | /* block reservation for delayed operations */ |
| 1370 | struct btrfs_block_rsv delayed_block_rsv; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1371 | |
| 1372 | struct btrfs_block_rsv empty_block_rsv; |
| 1373 | |
Chris Mason | 293ffd5 | 2007-03-20 15:57:25 -0400 | [diff] [blame] | 1374 | u64 generation; |
Josef Bacik | 15ee9bc | 2007-08-10 16:22:09 -0400 | [diff] [blame] | 1375 | u64 last_trans_committed; |
Josef Bacik | 0a2b2a8 | 2014-01-23 10:54:11 -0500 | [diff] [blame] | 1376 | u64 avg_delayed_ref_runtime; |
Chris Mason | 12fcfd2 | 2009-03-24 10:24:20 -0400 | [diff] [blame] | 1377 | |
| 1378 | /* |
| 1379 | * this is updated to the current trans every time a full commit |
| 1380 | * is required instead of the faster short fsync log commits |
| 1381 | */ |
| 1382 | u64 last_trans_log_full_commit; |
Stefan Behrens | 25cd999 | 2012-03-30 13:58:32 +0200 | [diff] [blame] | 1383 | unsigned long mount_opt; |
Li Zefan | 261507a0 | 2010-12-17 14:21:50 +0800 | [diff] [blame] | 1384 | unsigned long compress_type:4; |
David Sterba | 8b87dc1 | 2013-08-01 18:14:52 +0200 | [diff] [blame] | 1385 | int commit_interval; |
Miao Xie | 8c6a3ee | 2013-01-29 10:05:05 +0000 | [diff] [blame] | 1386 | /* |
| 1387 | * It is a suggestive number, the read side is safe even it gets a |
| 1388 | * wrong number because we will write out the data into a regular |
| 1389 | * extent. The write side(mount/remount) is under ->s_umount lock, |
| 1390 | * so it is also safe. |
| 1391 | */ |
Chris Mason | 6f568d3 | 2008-01-29 16:03:38 -0500 | [diff] [blame] | 1392 | u64 max_inline; |
Miao Xie | c018dae | 2013-01-29 10:07:33 +0000 | [diff] [blame] | 1393 | /* |
| 1394 | * Protected by ->chunk_mutex and sb->s_umount. |
| 1395 | * |
| 1396 | * The reason that we use two lock to protect it is because only |
| 1397 | * remount and mount operations can change it and these two operations |
| 1398 | * are under sb->s_umount, but the read side (chunk allocation) can not |
| 1399 | * acquire sb->s_umount or the deadlock would happen. So we use two |
| 1400 | * locks to protect it. On the write side, we must acquire two locks, |
| 1401 | * and on the read side, we just need acquire one of them. |
| 1402 | */ |
Chris Mason | 8f662a7 | 2008-01-02 10:01:11 -0500 | [diff] [blame] | 1403 | u64 alloc_start; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 1404 | struct btrfs_transaction *running_transaction; |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 1405 | wait_queue_head_t transaction_throttle; |
Chris Mason | f929574 | 2008-07-17 12:54:14 -0400 | [diff] [blame] | 1406 | wait_queue_head_t transaction_wait; |
Sage Weil | bb9c12c | 2010-10-29 15:37:34 -0400 | [diff] [blame] | 1407 | wait_queue_head_t transaction_blocked_wait; |
Chris Mason | 771ed68 | 2008-11-06 22:02:51 -0500 | [diff] [blame] | 1408 | wait_queue_head_t async_submit_wait; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1409 | |
Miao Xie | ceda086 | 2013-04-11 10:30:16 +0000 | [diff] [blame] | 1410 | /* |
| 1411 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags |
| 1412 | * when they are updated. |
| 1413 | * |
| 1414 | * Because we do not clear the flags for ever, so we needn't use |
| 1415 | * the lock on the read side. |
| 1416 | * |
| 1417 | * We also needn't use the lock when we mount the fs, because |
| 1418 | * there is no other task which will update the flag. |
| 1419 | */ |
| 1420 | spinlock_t super_lock; |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 1421 | struct btrfs_super_block *super_copy; |
| 1422 | struct btrfs_super_block *super_for_commit; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1423 | struct block_device *__bdev; |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 1424 | struct super_block *sb; |
Chris Mason | d98237b | 2007-03-28 13:57:48 -0400 | [diff] [blame] | 1425 | struct inode *btree_inode; |
Chris Mason | 0416008 | 2008-03-26 10:28:07 -0400 | [diff] [blame] | 1426 | struct backing_dev_info bdi; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1427 | struct mutex tree_log_mutex; |
Chris Mason | a74a4b9 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 1428 | struct mutex transaction_kthread_mutex; |
| 1429 | struct mutex cleaner_mutex; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 1430 | struct mutex chunk_mutex; |
Chris Mason | 7d9eb12 | 2008-07-08 14:19:17 -0400 | [diff] [blame] | 1431 | struct mutex volume_mutex; |
David Woodhouse | 53b381b | 2013-01-29 18:40:14 -0500 | [diff] [blame] | 1432 | |
| 1433 | /* this is used during read/modify/write to make sure |
| 1434 | * no two ios are trying to mod the same stripe at the same |
| 1435 | * time |
| 1436 | */ |
| 1437 | struct btrfs_stripe_hash_table *stripe_hash_table; |
| 1438 | |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1439 | /* |
| 1440 | * this protects the ordered operations list only while we are |
| 1441 | * processing all of the entries on it. This way we make |
| 1442 | * sure the commit code doesn't find the list temporarily empty |
| 1443 | * because another function happens to be doing non-waiting preflush |
| 1444 | * before jumping into the main commit. |
| 1445 | */ |
| 1446 | struct mutex ordered_operations_mutex; |
Josef Bacik | 9ffba8c | 2013-08-14 11:33:56 -0400 | [diff] [blame] | 1447 | |
| 1448 | /* |
| 1449 | * Same as ordered_operations_mutex except this is for ordered extents |
| 1450 | * and not the operations. |
| 1451 | */ |
| 1452 | struct mutex ordered_extent_flush_mutex; |
| 1453 | |
Josef Bacik | 9e351cc | 2014-03-13 15:42:13 -0400 | [diff] [blame] | 1454 | struct rw_semaphore commit_root_sem; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1455 | |
Yan, Zheng | c71bf09 | 2009-11-12 09:34:40 +0000 | [diff] [blame] | 1456 | struct rw_semaphore cleanup_work_sem; |
Yan, Zheng | 76dda93 | 2009-09-21 16:00:26 -0400 | [diff] [blame] | 1457 | |
Yan, Zheng | c71bf09 | 2009-11-12 09:34:40 +0000 | [diff] [blame] | 1458 | struct rw_semaphore subvol_sem; |
Yan, Zheng | 76dda93 | 2009-09-21 16:00:26 -0400 | [diff] [blame] | 1459 | struct srcu_struct subvol_srcu; |
| 1460 | |
Josef Bacik | a4abeea | 2011-04-11 17:25:13 -0400 | [diff] [blame] | 1461 | spinlock_t trans_lock; |
Chris Mason | 7585717 | 2011-06-13 20:00:16 -0400 | [diff] [blame] | 1462 | /* |
| 1463 | * the reloc mutex goes with the trans lock, it is taken |
| 1464 | * during commit to protect us from the relocation code |
| 1465 | */ |
| 1466 | struct mutex reloc_mutex; |
| 1467 | |
Chris Mason | 8fd1779 | 2007-04-19 21:01:03 -0400 | [diff] [blame] | 1468 | struct list_head trans_list; |
Chris Mason | facda1e | 2007-06-08 18:11:48 -0400 | [diff] [blame] | 1469 | struct list_head dead_roots; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1470 | struct list_head caching_block_groups; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1471 | |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 1472 | spinlock_t delayed_iput_lock; |
| 1473 | struct list_head delayed_iputs; |
| 1474 | |
Jan Schmidt | f29021b | 2012-05-16 17:55:38 +0200 | [diff] [blame] | 1475 | /* this protects tree_mod_seq_list */ |
| 1476 | spinlock_t tree_mod_seq_lock; |
Jan Schmidt | fc36ed7e | 2013-04-24 16:57:33 +0000 | [diff] [blame] | 1477 | atomic64_t tree_mod_seq; |
Jan Schmidt | f29021b | 2012-05-16 17:55:38 +0200 | [diff] [blame] | 1478 | struct list_head tree_mod_seq_list; |
| 1479 | |
| 1480 | /* this protects tree_mod_log */ |
| 1481 | rwlock_t tree_mod_log_lock; |
| 1482 | struct rb_root tree_mod_log; |
| 1483 | |
Chris Mason | cb03c74 | 2008-05-15 16:15:45 -0400 | [diff] [blame] | 1484 | atomic_t nr_async_submits; |
Chris Mason | 8c8bee1 | 2008-09-29 11:19:10 -0400 | [diff] [blame] | 1485 | atomic_t async_submit_draining; |
Chris Mason | 0986fe9e | 2008-08-15 15:34:15 -0400 | [diff] [blame] | 1486 | atomic_t nr_async_bios; |
Chris Mason | 771ed68 | 2008-11-06 22:02:51 -0500 | [diff] [blame] | 1487 | atomic_t async_delalloc_pages; |
Josef Bacik | a4abeea | 2011-04-11 17:25:13 -0400 | [diff] [blame] | 1488 | atomic_t open_ioctl_trans; |
Chris Mason | ce9adaa | 2008-04-09 16:28:12 -0400 | [diff] [blame] | 1489 | |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1490 | /* |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 1491 | * this is used to protect the following list -- ordered_roots. |
Chris Mason | 3eaa288 | 2008-07-24 11:57:52 -0400 | [diff] [blame] | 1492 | */ |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 1493 | spinlock_t ordered_root_lock; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1494 | |
| 1495 | /* |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 1496 | * all fs/file tree roots in which there are data=ordered extents |
| 1497 | * pending writeback are added into this list. |
| 1498 | * |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1499 | * these can span multiple transactions and basically include |
| 1500 | * every dirty data page that isn't from nodatacow |
| 1501 | */ |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 1502 | struct list_head ordered_roots; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1503 | |
Miao Xie | 573bfb7 | 2014-03-06 13:55:03 +0800 | [diff] [blame] | 1504 | struct mutex delalloc_root_mutex; |
Miao Xie | eb73c1b | 2013-05-15 07:48:22 +0000 | [diff] [blame] | 1505 | spinlock_t delalloc_root_lock; |
| 1506 | /* all fs/file tree roots that have delalloc inodes. */ |
| 1507 | struct list_head delalloc_roots; |
Chris Mason | 3eaa288 | 2008-07-24 11:57:52 -0400 | [diff] [blame] | 1508 | |
| 1509 | /* |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1510 | * there is a pool of worker threads for checksumming during writes |
| 1511 | * and a pool for checksumming after reads. This is because readers |
| 1512 | * can run with FS locks held, and the writers may be waiting for |
| 1513 | * those locks. We don't want ordering in the pending list to cause |
| 1514 | * deadlocks, and so the two are serviced separately. |
Chris Mason | 1cc127b | 2008-06-12 14:46:17 -0400 | [diff] [blame] | 1515 | * |
| 1516 | * A third pool does submit_bio to avoid deadlocking with the other |
| 1517 | * two |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1518 | */ |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 1519 | struct btrfs_workqueue *workers; |
| 1520 | struct btrfs_workqueue *delalloc_workers; |
| 1521 | struct btrfs_workqueue *flush_workers; |
| 1522 | struct btrfs_workqueue *endio_workers; |
| 1523 | struct btrfs_workqueue *endio_meta_workers; |
| 1524 | struct btrfs_workqueue *endio_raid56_workers; |
| 1525 | struct btrfs_workqueue *rmw_workers; |
| 1526 | struct btrfs_workqueue *endio_meta_write_workers; |
| 1527 | struct btrfs_workqueue *endio_write_workers; |
| 1528 | struct btrfs_workqueue *endio_freespace_worker; |
| 1529 | struct btrfs_workqueue *submit_workers; |
| 1530 | struct btrfs_workqueue *caching_workers; |
| 1531 | struct btrfs_workqueue *readahead_workers; |
Josef Bacik | bab39bf | 2011-06-30 14:42:28 -0400 | [diff] [blame] | 1532 | |
Chris Mason | 247e743 | 2008-07-17 12:53:51 -0400 | [diff] [blame] | 1533 | /* |
| 1534 | * fixup workers take dirty pages that didn't properly go through |
| 1535 | * the cow mechanism and make them safe to write. It happens |
| 1536 | * for the sys_munmap function call path |
| 1537 | */ |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 1538 | struct btrfs_workqueue *fixup_workers; |
| 1539 | struct btrfs_workqueue *delayed_workers; |
Chris Mason | a74a4b9 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 1540 | struct task_struct *transaction_kthread; |
| 1541 | struct task_struct *cleaner_kthread; |
Chris Mason | 4543df7 | 2008-06-11 21:47:56 -0400 | [diff] [blame] | 1542 | int thread_pool_size; |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1543 | |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 1544 | struct kobject super_kobj; |
Jeff Mahoney | 6ab0a20 | 2013-11-01 13:07:04 -0400 | [diff] [blame] | 1545 | struct kobject *space_info_kobj; |
Jeff Mahoney | 29e5be2 | 2013-11-01 13:07:05 -0400 | [diff] [blame] | 1546 | struct kobject *device_dir_kobj; |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 1547 | struct completion kobj_unregister; |
Chris Mason | e66f709 | 2007-04-20 13:16:02 -0400 | [diff] [blame] | 1548 | int do_barriers; |
Chris Mason | facda1e | 2007-06-08 18:11:48 -0400 | [diff] [blame] | 1549 | int closing; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1550 | int log_root_recovering; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1551 | |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 1552 | u64 total_pinned; |
Chris Mason | b947343 | 2009-03-13 11:00:37 -0400 | [diff] [blame] | 1553 | |
Miao Xie | e2d8452 | 2013-01-29 10:09:20 +0000 | [diff] [blame] | 1554 | /* used to keep from writing metadata until there is a nice batch */ |
| 1555 | struct percpu_counter dirty_metadata_bytes; |
Miao Xie | 963d678 | 2013-01-29 10:10:51 +0000 | [diff] [blame] | 1556 | struct percpu_counter delalloc_bytes; |
Miao Xie | e2d8452 | 2013-01-29 10:09:20 +0000 | [diff] [blame] | 1557 | s32 dirty_metadata_batch; |
Miao Xie | 963d678 | 2013-01-29 10:10:51 +0000 | [diff] [blame] | 1558 | s32 delalloc_batch; |
| 1559 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1560 | struct list_head dirty_cowonly_roots; |
| 1561 | |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 1562 | struct btrfs_fs_devices *fs_devices; |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 1563 | |
| 1564 | /* |
| 1565 | * the space_info list is almost entirely read only. It only changes |
| 1566 | * when we add a new raid type to the FS, and that happens |
| 1567 | * very rarely. RCU is used to protect it. |
| 1568 | */ |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1569 | struct list_head space_info; |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 1570 | |
Li Zefan | b4d7c3c | 2012-07-09 20:21:07 -0600 | [diff] [blame] | 1571 | struct btrfs_space_info *data_sinfo; |
| 1572 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1573 | struct reloc_control *reloc_ctl; |
| 1574 | |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 1575 | /* data_alloc_cluster is only used in ssd mode */ |
| 1576 | struct btrfs_free_cluster data_alloc_cluster; |
| 1577 | |
| 1578 | /* all metadata allocations go through this cluster */ |
| 1579 | struct btrfs_free_cluster meta_alloc_cluster; |
Chris Mason | d18a2c4 | 2008-04-04 15:40:00 -0400 | [diff] [blame] | 1580 | |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 1581 | /* auto defrag inodes go here */ |
| 1582 | spinlock_t defrag_inodes_lock; |
| 1583 | struct rb_root defrag_inodes; |
| 1584 | atomic_t defrag_running; |
| 1585 | |
Miao Xie | de98ced | 2013-01-29 10:13:12 +0000 | [diff] [blame] | 1586 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
| 1587 | seqlock_t profiles_lock; |
Ilya Dryomov | a46d11a | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1588 | /* |
| 1589 | * these three are in extended format (availability of single |
| 1590 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other |
| 1591 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) |
| 1592 | */ |
Chris Mason | d18a2c4 | 2008-04-04 15:40:00 -0400 | [diff] [blame] | 1593 | u64 avail_data_alloc_bits; |
| 1594 | u64 avail_metadata_alloc_bits; |
| 1595 | u64 avail_system_alloc_bits; |
Chris Mason | 788f20e | 2008-04-28 15:29:42 -0400 | [diff] [blame] | 1596 | |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1597 | /* restriper state */ |
| 1598 | spinlock_t balance_lock; |
| 1599 | struct mutex balance_mutex; |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 1600 | atomic_t balance_running; |
| 1601 | atomic_t balance_pause_req; |
Ilya Dryomov | a7e99c6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 1602 | atomic_t balance_cancel_req; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1603 | struct btrfs_balance_control *balance_ctl; |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 1604 | wait_queue_head_t balance_wait_q; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1605 | |
Josef Bacik | 97e728d | 2009-04-21 17:40:57 -0400 | [diff] [blame] | 1606 | unsigned data_chunk_allocations; |
| 1607 | unsigned metadata_ratio; |
| 1608 | |
Chris Mason | 788f20e | 2008-04-28 15:29:42 -0400 | [diff] [blame] | 1609 | void *bdev_holder; |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 1610 | |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 1611 | /* private scrub information */ |
| 1612 | struct mutex scrub_lock; |
| 1613 | atomic_t scrubs_running; |
| 1614 | atomic_t scrub_pause_req; |
| 1615 | atomic_t scrubs_paused; |
| 1616 | atomic_t scrub_cancel_req; |
| 1617 | wait_queue_head_t scrub_pause_wait; |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 1618 | int scrub_workers_refcnt; |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 1619 | struct btrfs_workqueue *scrub_workers; |
| 1620 | struct btrfs_workqueue *scrub_wr_completion_workers; |
| 1621 | struct btrfs_workqueue *scrub_nocow_workers; |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 1622 | |
Stefan Behrens | 21adbd5 | 2011-11-09 13:44:05 +0100 | [diff] [blame] | 1623 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
| 1624 | u32 check_integrity_print_mask; |
| 1625 | #endif |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1626 | /* |
| 1627 | * quota information |
| 1628 | */ |
| 1629 | unsigned int quota_enabled:1; |
| 1630 | |
| 1631 | /* |
| 1632 | * quota_enabled only changes state after a commit. This holds the |
| 1633 | * next state. |
| 1634 | */ |
| 1635 | unsigned int pending_quota_state:1; |
| 1636 | |
| 1637 | /* is qgroup tracking in a consistent state? */ |
| 1638 | u64 qgroup_flags; |
| 1639 | |
| 1640 | /* holds configuration and tracking. Protected by qgroup_lock */ |
| 1641 | struct rb_root qgroup_tree; |
| 1642 | spinlock_t qgroup_lock; |
| 1643 | |
Wang Shilong | 1e8f915 | 2013-05-06 11:03:27 +0000 | [diff] [blame] | 1644 | /* |
| 1645 | * used to avoid frequently calling ulist_alloc()/ulist_free() |
| 1646 | * when doing qgroup accounting, it must be protected by qgroup_lock. |
| 1647 | */ |
| 1648 | struct ulist *qgroup_ulist; |
| 1649 | |
Wang Shilong | f2f6ed3 | 2013-04-07 10:50:16 +0000 | [diff] [blame] | 1650 | /* protect user change for quota operations */ |
| 1651 | struct mutex qgroup_ioctl_lock; |
| 1652 | |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1653 | /* list of dirty qgroups to be written at next commit */ |
| 1654 | struct list_head dirty_qgroups; |
| 1655 | |
| 1656 | /* used by btrfs_qgroup_record_ref for an efficient tree traversal */ |
| 1657 | u64 qgroup_seq; |
Stefan Behrens | 21adbd5 | 2011-11-09 13:44:05 +0100 | [diff] [blame] | 1658 | |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1659 | /* qgroup rescan items */ |
| 1660 | struct mutex qgroup_rescan_lock; /* protects the progress item */ |
| 1661 | struct btrfs_key qgroup_rescan_progress; |
Qu Wenruo | d458b05 | 2014-02-28 10:46:19 +0800 | [diff] [blame] | 1662 | struct btrfs_workqueue *qgroup_rescan_workers; |
Jan Schmidt | 57254b6e | 2013-05-06 19:14:17 +0000 | [diff] [blame] | 1663 | struct completion qgroup_rescan_completion; |
Jan Schmidt | b382a32 | 2013-05-28 15:47:24 +0000 | [diff] [blame] | 1664 | struct btrfs_work qgroup_rescan_work; |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 1665 | |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 1666 | /* filesystem state */ |
Miao Xie | 87533c4 | 2013-01-29 10:14:48 +0000 | [diff] [blame] | 1667 | unsigned long fs_state; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1668 | |
| 1669 | struct btrfs_delayed_root *delayed_root; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 1670 | |
Arne Jansen | 90519d6 | 2011-05-23 14:30:00 +0200 | [diff] [blame] | 1671 | /* readahead tree */ |
| 1672 | spinlock_t reada_lock; |
| 1673 | struct radix_tree_root reada_tree; |
Chris Mason | 531f4b1a | 2011-11-06 03:05:08 -0500 | [diff] [blame] | 1674 | |
Josef Bacik | f28491e | 2013-12-16 13:24:27 -0500 | [diff] [blame] | 1675 | /* Extent buffer radix tree */ |
| 1676 | spinlock_t buffer_lock; |
| 1677 | struct radix_tree_root buffer_radix; |
| 1678 | |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 1679 | /* next backup root to be overwritten */ |
| 1680 | int backup_root_index; |
Stefan Behrens | 5af3e8c | 2012-08-01 18:56:49 +0200 | [diff] [blame] | 1681 | |
| 1682 | int num_tolerated_disk_barrier_failures; |
Stefan Behrens | e922e08 | 2012-11-05 17:26:40 +0100 | [diff] [blame] | 1683 | |
| 1684 | /* device replace state */ |
| 1685 | struct btrfs_dev_replace dev_replace; |
Stefan Behrens | 5ac00ad | 2012-11-05 17:54:08 +0100 | [diff] [blame] | 1686 | |
| 1687 | atomic_t mutually_exclusive_operation_running; |
Stefan Behrens | 803b2f5 | 2013-08-15 17:11:21 +0200 | [diff] [blame] | 1688 | |
Miao Xie | c404e0d | 2014-01-30 16:46:55 +0800 | [diff] [blame] | 1689 | struct percpu_counter bio_counter; |
| 1690 | wait_queue_head_t replace_wait; |
| 1691 | |
Stefan Behrens | 803b2f5 | 2013-08-15 17:11:21 +0200 | [diff] [blame] | 1692 | struct semaphore uuid_tree_rescan_sem; |
Stefan Behrens | 70f8017 | 2013-08-15 17:11:23 +0200 | [diff] [blame] | 1693 | unsigned int update_uuid_tree_gen:1; |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 1694 | }; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1695 | |
Miao Xie | 8257b2d | 2014-03-06 13:38:19 +0800 | [diff] [blame] | 1696 | struct btrfs_subvolume_writers { |
| 1697 | struct percpu_counter counter; |
| 1698 | wait_queue_head_t wait; |
| 1699 | }; |
| 1700 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1701 | /* |
| 1702 | * 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] | 1703 | * and for the extent tree extent_root root. |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1704 | */ |
| 1705 | struct btrfs_root { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1706 | struct extent_buffer *node; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 1707 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1708 | struct extent_buffer *commit_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1709 | struct btrfs_root *log_root; |
Zheng Yan | 1a40e23 | 2008-09-26 10:09:34 -0400 | [diff] [blame] | 1710 | struct btrfs_root *reloc_root; |
Yan Zheng | 31153d8 | 2008-07-28 15:32:19 -0400 | [diff] [blame] | 1711 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1712 | struct btrfs_root_item root_item; |
| 1713 | struct btrfs_key root_key; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1714 | struct btrfs_fs_info *fs_info; |
Chris Mason | d0c803c | 2008-09-11 16:17:57 -0400 | [diff] [blame] | 1715 | struct extent_io_tree dirty_log_pages; |
| 1716 | |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 1717 | struct kobject root_kobj; |
| 1718 | struct completion kobj_unregister; |
Chris Mason | a213501 | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 1719 | struct mutex objectid_mutex; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1720 | |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1721 | spinlock_t accounting_lock; |
| 1722 | struct btrfs_block_rsv *block_rsv; |
| 1723 | |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1724 | /* free ino cache stuff */ |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1725 | struct btrfs_free_space_ctl *free_ino_ctl; |
| 1726 | enum btrfs_caching_type cached; |
| 1727 | spinlock_t cache_lock; |
| 1728 | wait_queue_head_t cache_wait; |
| 1729 | struct btrfs_free_space_ctl *free_ino_pinned; |
| 1730 | u64 cache_progress; |
Li Zefan | 82d5902 | 2011-04-20 10:33:24 +0800 | [diff] [blame] | 1731 | struct inode *cache_inode; |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1732 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1733 | struct mutex log_mutex; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1734 | wait_queue_head_t log_writer_wait; |
| 1735 | wait_queue_head_t log_commit_wait[2]; |
Miao Xie | 8b050d3 | 2014-02-20 18:08:58 +0800 | [diff] [blame] | 1736 | struct list_head log_ctxs[2]; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1737 | atomic_t log_writers; |
| 1738 | atomic_t log_commit[2]; |
Miao Xie | 2ecb792 | 2012-09-06 04:04:27 -0600 | [diff] [blame] | 1739 | atomic_t log_batch; |
Miao Xie | bb14a59 | 2014-02-20 18:08:56 +0800 | [diff] [blame] | 1740 | int log_transid; |
Miao Xie | d1433de | 2014-02-20 18:08:59 +0800 | [diff] [blame] | 1741 | /* No matter the commit succeeds or not*/ |
| 1742 | int log_transid_committed; |
| 1743 | /* Just be updated when the commit succeeds. */ |
Miao Xie | bb14a59 | 2014-02-20 18:08:56 +0800 | [diff] [blame] | 1744 | int last_log_commit; |
Josef Bacik | ff782e0 | 2009-10-08 15:30:04 -0400 | [diff] [blame] | 1745 | pid_t log_start_pid; |
| 1746 | bool log_multiple_pids; |
Chris Mason | ea8c281 | 2008-08-04 23:17:27 -0400 | [diff] [blame] | 1747 | |
Chris Mason | 0f7d52f | 2007-04-09 10:42:37 -0400 | [diff] [blame] | 1748 | u64 objectid; |
| 1749 | u64 last_trans; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1750 | |
| 1751 | /* data allocations are done in sectorsize units */ |
| 1752 | u32 sectorsize; |
| 1753 | |
| 1754 | /* node allocations are done in nodesize units */ |
| 1755 | u32 nodesize; |
| 1756 | |
| 1757 | /* leaf allocations are done in leafsize units */ |
| 1758 | u32 leafsize; |
| 1759 | |
Chris Mason | 87ee04e | 2007-11-30 11:30:34 -0500 | [diff] [blame] | 1760 | u32 stripesize; |
| 1761 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1762 | u32 type; |
Yan, Zheng | 13a8a7c | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 1763 | |
| 1764 | u64 highest_objectid; |
Chris Mason | 7585717 | 2011-06-13 20:00:16 -0400 | [diff] [blame] | 1765 | |
| 1766 | /* btrfs_record_root_in_trans is a multi-step process, |
| 1767 | * and it can race with the balancing code. But the |
| 1768 | * race is very small, and only the first time the root |
| 1769 | * is added to each transaction. So in_trans_setup |
| 1770 | * is used to tell us when more checks are required |
| 1771 | */ |
| 1772 | unsigned long in_trans_setup; |
Chris Mason | 9f3a742 | 2007-08-07 15:52:19 -0400 | [diff] [blame] | 1773 | int ref_cows; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1774 | int track_dirty; |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 1775 | int in_radix; |
Josef Bacik | 06ea65a | 2013-09-19 16:07:01 -0400 | [diff] [blame] | 1776 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
| 1777 | int dummy_root; |
| 1778 | #endif |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 1779 | u64 defrag_trans_start; |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 1780 | struct btrfs_key defrag_progress; |
Chris Mason | 0ef3e66 | 2008-05-24 14:04:53 -0400 | [diff] [blame] | 1781 | struct btrfs_key defrag_max; |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 1782 | int defrag_running; |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 1783 | char *name; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1784 | |
| 1785 | /* the dirty list is only used by non-reference counted roots */ |
| 1786 | struct list_head dirty_list; |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 1787 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1788 | struct list_head root_list; |
| 1789 | |
Josef Bacik | 2ab28f3 | 2012-10-12 15:27:49 -0400 | [diff] [blame] | 1790 | spinlock_t log_extents_lock[2]; |
| 1791 | struct list_head logged_list[2]; |
| 1792 | |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 1793 | spinlock_t orphan_lock; |
Josef Bacik | 8a35d95 | 2012-05-23 14:26:42 -0400 | [diff] [blame] | 1794 | atomic_t orphan_inodes; |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 1795 | struct btrfs_block_rsv *orphan_block_rsv; |
| 1796 | int orphan_item_inserted; |
| 1797 | int orphan_cleanup_state; |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1798 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1799 | spinlock_t inode_lock; |
| 1800 | /* red-black tree that keeps track of in-memory inodes */ |
| 1801 | struct rb_root inode_tree; |
| 1802 | |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1803 | /* |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1804 | * radix tree that keeps track of delayed nodes of every inode, |
| 1805 | * protected by inode_lock |
| 1806 | */ |
| 1807 | struct radix_tree_root delayed_nodes_tree; |
| 1808 | /* |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1809 | * right now this just gets used so that a root has its own devid |
| 1810 | * for stat. It may be used for more later |
| 1811 | */ |
Al Viro | 0ee5dc6 | 2011-07-07 15:44:25 -0400 | [diff] [blame] | 1812 | dev_t anon_dev; |
Liu Bo | f1ebcc7 | 2011-11-14 20:48:06 -0500 | [diff] [blame] | 1813 | |
| 1814 | int force_cow; |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 1815 | |
Anand Jain | 5f3ab90 | 2012-12-07 09:28:54 +0000 | [diff] [blame] | 1816 | spinlock_t root_item_lock; |
Miao Xie | b0feb9d | 2013-05-15 07:48:20 +0000 | [diff] [blame] | 1817 | atomic_t refs; |
Miao Xie | eb73c1b | 2013-05-15 07:48:22 +0000 | [diff] [blame] | 1818 | |
Miao Xie | 573bfb7 | 2014-03-06 13:55:03 +0800 | [diff] [blame] | 1819 | struct mutex delalloc_mutex; |
Miao Xie | eb73c1b | 2013-05-15 07:48:22 +0000 | [diff] [blame] | 1820 | spinlock_t delalloc_lock; |
| 1821 | /* |
| 1822 | * all of the inodes that have delalloc bytes. It is possible for |
| 1823 | * this list to be empty even when there is still dirty data=ordered |
| 1824 | * extents waiting to finish IO. |
| 1825 | */ |
| 1826 | struct list_head delalloc_inodes; |
| 1827 | struct list_head delalloc_root; |
| 1828 | u64 nr_delalloc_inodes; |
Miao Xie | 31f3d25 | 2014-03-06 13:55:02 +0800 | [diff] [blame] | 1829 | |
| 1830 | struct mutex ordered_extent_mutex; |
Miao Xie | 199c2a9 | 2013-05-15 07:48:23 +0000 | [diff] [blame] | 1831 | /* |
| 1832 | * this is used by the balancing code to wait for all the pending |
| 1833 | * ordered extents |
| 1834 | */ |
| 1835 | spinlock_t ordered_extent_lock; |
| 1836 | |
| 1837 | /* |
| 1838 | * all of the data=ordered extents pending writeback |
| 1839 | * these can span multiple transactions and basically include |
| 1840 | * every dirty data page that isn't from nodatacow |
| 1841 | */ |
| 1842 | struct list_head ordered_extents; |
| 1843 | struct list_head ordered_root; |
| 1844 | u64 nr_ordered_extents; |
David Sterba | 2c68653 | 2013-12-16 17:34:17 +0100 | [diff] [blame] | 1845 | |
| 1846 | /* |
| 1847 | * Number of currently running SEND ioctls to prevent |
| 1848 | * manipulation with the read-only status via SUBVOL_SETFLAGS |
| 1849 | */ |
| 1850 | int send_in_progress; |
Miao Xie | 8257b2d | 2014-03-06 13:38:19 +0800 | [diff] [blame] | 1851 | struct btrfs_subvolume_writers *subv_writers; |
| 1852 | atomic_t will_be_snapshoted; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1853 | }; |
| 1854 | |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 1855 | struct btrfs_ioctl_defrag_range_args { |
| 1856 | /* start of the defrag operation */ |
| 1857 | __u64 start; |
| 1858 | |
| 1859 | /* number of bytes to defrag, use (u64)-1 to say all */ |
| 1860 | __u64 len; |
| 1861 | |
| 1862 | /* |
| 1863 | * flags for the operation, which can include turning |
| 1864 | * on compression for this one defrag |
| 1865 | */ |
| 1866 | __u64 flags; |
| 1867 | |
| 1868 | /* |
| 1869 | * any extent bigger than this will be considered |
| 1870 | * already defragged. Use 0 to take the kernel default |
| 1871 | * Use 1 to say every single extent must be rewritten |
| 1872 | */ |
| 1873 | __u32 extent_thresh; |
| 1874 | |
| 1875 | /* |
| 1876 | * which compression method to use if turning on compression |
| 1877 | * for this defrag operation. If unspecified, zlib will |
| 1878 | * be used |
| 1879 | */ |
| 1880 | __u32 compress_type; |
| 1881 | |
| 1882 | /* spare for later */ |
| 1883 | __u32 unused[4]; |
| 1884 | }; |
| 1885 | |
| 1886 | |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1887 | /* |
| 1888 | * inode items have the data typically returned from stat and store other |
| 1889 | * info about object characteristics. There is one for every file and dir in |
| 1890 | * the FS |
| 1891 | */ |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1892 | #define BTRFS_INODE_ITEM_KEY 1 |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1893 | #define BTRFS_INODE_REF_KEY 12 |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 1894 | #define BTRFS_INODE_EXTREF_KEY 13 |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1895 | #define BTRFS_XATTR_ITEM_KEY 24 |
| 1896 | #define BTRFS_ORPHAN_ITEM_KEY 48 |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1897 | /* reserve 2-15 close to the inode for later flexibility */ |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1898 | |
| 1899 | /* |
| 1900 | * dir items are the name -> inode pointers in a directory. There is one |
| 1901 | * for every name in a directory. |
| 1902 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1903 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
| 1904 | #define BTRFS_DIR_LOG_INDEX_KEY 72 |
| 1905 | #define BTRFS_DIR_ITEM_KEY 84 |
| 1906 | #define BTRFS_DIR_INDEX_KEY 96 |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1907 | /* |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1908 | * extent data is for file data |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1909 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1910 | #define BTRFS_EXTENT_DATA_KEY 108 |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 1911 | |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1912 | /* |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 1913 | * extent csums are stored in a separate tree and hold csums for |
| 1914 | * an entire extent on disk. |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 1915 | */ |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 1916 | #define BTRFS_EXTENT_CSUM_KEY 128 |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 1917 | |
| 1918 | /* |
Wu Fengguang | d4a7894 | 2009-04-02 16:46:06 -0400 | [diff] [blame] | 1919 | * root items point to tree roots. They are typically in the root |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1920 | * tree used by the super block to find all the other trees |
| 1921 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1922 | #define BTRFS_ROOT_ITEM_KEY 132 |
| 1923 | |
| 1924 | /* |
| 1925 | * root backrefs tie subvols and snapshots to the directory entries that |
| 1926 | * reference them |
| 1927 | */ |
| 1928 | #define BTRFS_ROOT_BACKREF_KEY 144 |
| 1929 | |
| 1930 | /* |
| 1931 | * root refs make a fast index for listing all of the snapshots and |
| 1932 | * subvolumes referenced by a given root. They point directly to the |
| 1933 | * directory item in the root that references the subvol |
| 1934 | */ |
| 1935 | #define BTRFS_ROOT_REF_KEY 156 |
| 1936 | |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1937 | /* |
| 1938 | * extent items are in the extent map tree. These record which blocks |
| 1939 | * are used, and how many references there are to each block |
| 1940 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1941 | #define BTRFS_EXTENT_ITEM_KEY 168 |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1942 | |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 1943 | /* |
| 1944 | * The same as the BTRFS_EXTENT_ITEM_KEY, except it's metadata we already know |
| 1945 | * the length, so we save the level in key->offset instead of the length. |
| 1946 | */ |
| 1947 | #define BTRFS_METADATA_ITEM_KEY 169 |
| 1948 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1949 | #define BTRFS_TREE_BLOCK_REF_KEY 176 |
| 1950 | |
| 1951 | #define BTRFS_EXTENT_DATA_REF_KEY 178 |
| 1952 | |
| 1953 | #define BTRFS_EXTENT_REF_V0_KEY 180 |
| 1954 | |
| 1955 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 |
| 1956 | |
| 1957 | #define BTRFS_SHARED_DATA_REF_KEY 184 |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1958 | |
| 1959 | /* |
| 1960 | * block groups give us hints into the extent allocation trees. Which |
| 1961 | * blocks are free etc etc |
| 1962 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1963 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1964 | |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1965 | #define BTRFS_DEV_EXTENT_KEY 204 |
| 1966 | #define BTRFS_DEV_ITEM_KEY 216 |
| 1967 | #define BTRFS_CHUNK_ITEM_KEY 228 |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1968 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 1969 | /* |
| 1970 | * Records the overall state of the qgroups. |
| 1971 | * There's only one instance of this key present, |
| 1972 | * (0, BTRFS_QGROUP_STATUS_KEY, 0) |
| 1973 | */ |
| 1974 | #define BTRFS_QGROUP_STATUS_KEY 240 |
| 1975 | /* |
| 1976 | * Records the currently used space of the qgroup. |
| 1977 | * One key per qgroup, (0, BTRFS_QGROUP_INFO_KEY, qgroupid). |
| 1978 | */ |
| 1979 | #define BTRFS_QGROUP_INFO_KEY 242 |
| 1980 | /* |
| 1981 | * Contains the user configured limits for the qgroup. |
| 1982 | * One key per qgroup, (0, BTRFS_QGROUP_LIMIT_KEY, qgroupid). |
| 1983 | */ |
| 1984 | #define BTRFS_QGROUP_LIMIT_KEY 244 |
| 1985 | /* |
| 1986 | * Records the child-parent relationship of qgroups. For |
| 1987 | * each relation, 2 keys are present: |
| 1988 | * (childid, BTRFS_QGROUP_RELATION_KEY, parentid) |
| 1989 | * (parentid, BTRFS_QGROUP_RELATION_KEY, childid) |
| 1990 | */ |
| 1991 | #define BTRFS_QGROUP_RELATION_KEY 246 |
| 1992 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 1993 | #define BTRFS_BALANCE_ITEM_KEY 248 |
| 1994 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1995 | /* |
Stefan Behrens | 733f4fb | 2012-05-25 16:06:10 +0200 | [diff] [blame] | 1996 | * Persistantly stores the io stats in the device tree. |
| 1997 | * One key for all stats, (0, BTRFS_DEV_STATS_KEY, devid). |
| 1998 | */ |
| 1999 | #define BTRFS_DEV_STATS_KEY 249 |
| 2000 | |
| 2001 | /* |
Stefan Behrens | a2bff64 | 2012-11-05 17:32:20 +0100 | [diff] [blame] | 2002 | * Persistantly stores the device replace state in the device tree. |
| 2003 | * The key is built like this: (0, BTRFS_DEV_REPLACE_KEY, 0). |
| 2004 | */ |
| 2005 | #define BTRFS_DEV_REPLACE_KEY 250 |
| 2006 | |
| 2007 | /* |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 2008 | * Stores items that allow to quickly map UUIDs to something else. |
| 2009 | * These items are part of the filesystem UUID tree. |
| 2010 | * The key is built like this: |
| 2011 | * (UUID_upper_64_bits, BTRFS_UUID_KEY*, UUID_lower_64_bits). |
| 2012 | */ |
| 2013 | #if BTRFS_UUID_SIZE != 16 |
| 2014 | #error "UUID items require BTRFS_UUID_SIZE == 16!" |
| 2015 | #endif |
| 2016 | #define BTRFS_UUID_KEY_SUBVOL 251 /* for UUIDs assigned to subvols */ |
| 2017 | #define BTRFS_UUID_KEY_RECEIVED_SUBVOL 252 /* for UUIDs assigned to |
| 2018 | * received subvols */ |
| 2019 | |
| 2020 | /* |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2021 | * string items are for debugging. They just store a short string of |
| 2022 | * data in the FS |
| 2023 | */ |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2024 | #define BTRFS_STRING_ITEM_KEY 253 |
| 2025 | |
David Sterba | 0942caa | 2011-06-28 15:10:37 +0000 | [diff] [blame] | 2026 | /* |
| 2027 | * Flags for mount options. |
| 2028 | * |
| 2029 | * Note: don't forget to add new options to btrfs_show_options() |
| 2030 | */ |
Chris Mason | 21ad10c | 2008-01-09 09:23:21 -0500 | [diff] [blame] | 2031 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
| 2032 | #define BTRFS_MOUNT_NODATACOW (1 << 1) |
| 2033 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) |
Chris Mason | e18e480 | 2008-01-18 10:54:22 -0500 | [diff] [blame] | 2034 | #define BTRFS_MOUNT_SSD (1 << 3) |
Chris Mason | dfe2502 | 2008-05-13 13:46:40 -0400 | [diff] [blame] | 2035 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 2036 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
Sage Weil | 3a5e140 | 2009-04-02 16:49:40 -0400 | [diff] [blame] | 2037 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
Sage Weil | dccae99 | 2009-04-02 16:59:01 -0400 | [diff] [blame] | 2038 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
Chris Mason | 451d758 | 2009-06-09 20:28:34 -0400 | [diff] [blame] | 2039 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
Chris Mason | c289811 | 2009-06-10 09:51:32 -0400 | [diff] [blame] | 2040 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
Christoph Hellwig | e244a0a | 2009-10-14 09:24:59 -0400 | [diff] [blame] | 2041 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
Chris Mason | a555f81 | 2010-01-28 16:18:15 -0500 | [diff] [blame] | 2042 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 2043 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
Josef Bacik | 88c2ba3 | 2010-09-21 14:21:34 -0400 | [diff] [blame] | 2044 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
Sage Weil | 4260f7c | 2010-10-29 15:46:43 -0400 | [diff] [blame] | 2045 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
Chris Mason | 9143565 | 2011-02-16 13:10:41 -0500 | [diff] [blame] | 2046 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 2047 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
Chris Mason | 4b9465c | 2011-06-03 09:36:29 -0400 | [diff] [blame] | 2048 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 2049 | #define BTRFS_MOUNT_RECOVERY (1 << 18) |
Ilya Dryomov | 9555c6c | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2050 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
Chris Mason | c126dea | 2012-01-16 15:27:58 -0500 | [diff] [blame] | 2051 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
| 2052 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) |
Jeff Mahoney | 8c34293 | 2011-10-03 23:22:31 -0400 | [diff] [blame] | 2053 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
Stefan Behrens | f420ee1 | 2013-08-15 17:11:24 +0200 | [diff] [blame] | 2054 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
Qu Wenruo | 3818aea | 2014-01-13 13:36:06 +0800 | [diff] [blame] | 2055 | #define BTRFS_MOUNT_CHANGE_INODE_CACHE (1 << 24) |
Chris Mason | b6cda9b | 2007-12-14 15:30:32 -0500 | [diff] [blame] | 2056 | |
David Sterba | 8b87dc1 | 2013-08-01 18:14:52 +0200 | [diff] [blame] | 2057 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
| 2058 | |
Chris Mason | b6cda9b | 2007-12-14 15:30:32 -0500 | [diff] [blame] | 2059 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
| 2060 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) |
Miao Xie | dc81cdc | 2013-02-20 23:32:52 -0700 | [diff] [blame] | 2061 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
Chris Mason | b6cda9b | 2007-12-14 15:30:32 -0500 | [diff] [blame] | 2062 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ |
| 2063 | BTRFS_MOUNT_##opt) |
Wang Shilong | 9d89ce6 | 2014-04-23 19:33:33 +0800 | [diff] [blame] | 2064 | #define btrfs_set_and_info(root, opt, fmt, args...) \ |
| 2065 | { \ |
| 2066 | if (!btrfs_test_opt(root, opt)) \ |
| 2067 | btrfs_info(root->fs_info, fmt, ##args); \ |
| 2068 | btrfs_set_opt(root->fs_info->mount_opt, opt); \ |
| 2069 | } |
| 2070 | |
| 2071 | #define btrfs_clear_and_info(root, opt, fmt, args...) \ |
| 2072 | { \ |
| 2073 | if (btrfs_test_opt(root, opt)) \ |
| 2074 | btrfs_info(root->fs_info, fmt, ##args); \ |
| 2075 | btrfs_clear_opt(root->fs_info->mount_opt, opt); \ |
| 2076 | } |
| 2077 | |
Yan | b98b676 | 2008-01-08 15:54:37 -0500 | [diff] [blame] | 2078 | /* |
| 2079 | * Inode flags |
| 2080 | */ |
Yan | fdebe2b | 2008-01-14 13:26:08 -0500 | [diff] [blame] | 2081 | #define BTRFS_INODE_NODATASUM (1 << 0) |
| 2082 | #define BTRFS_INODE_NODATACOW (1 << 1) |
| 2083 | #define BTRFS_INODE_READONLY (1 << 2) |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 2084 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 2085 | #define BTRFS_INODE_PREALLOC (1 << 4) |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 2086 | #define BTRFS_INODE_SYNC (1 << 5) |
| 2087 | #define BTRFS_INODE_IMMUTABLE (1 << 6) |
| 2088 | #define BTRFS_INODE_APPEND (1 << 7) |
| 2089 | #define BTRFS_INODE_NODUMP (1 << 8) |
| 2090 | #define BTRFS_INODE_NOATIME (1 << 9) |
| 2091 | #define BTRFS_INODE_DIRSYNC (1 << 10) |
Liu Bo | 75e7cb7 | 2011-03-22 10:12:20 +0000 | [diff] [blame] | 2092 | #define BTRFS_INODE_COMPRESS (1 << 11) |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 2093 | |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 2094 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
| 2095 | |
Chris Mason | cfed81a | 2012-03-03 07:40:03 -0500 | [diff] [blame] | 2096 | struct btrfs_map_token { |
| 2097 | struct extent_buffer *eb; |
| 2098 | char *kaddr; |
| 2099 | unsigned long offset; |
| 2100 | }; |
| 2101 | |
| 2102 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
| 2103 | { |
Josef Bacik | ad91455 | 2012-10-15 13:39:33 -0400 | [diff] [blame] | 2104 | token->kaddr = NULL; |
Chris Mason | cfed81a | 2012-03-03 07:40:03 -0500 | [diff] [blame] | 2105 | } |
| 2106 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2107 | /* some macros to generate set/get funcs for the struct fields. This |
| 2108 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
| 2109 | * one for u8: |
| 2110 | */ |
| 2111 | #define le8_to_cpu(v) (v) |
| 2112 | #define cpu_to_le8(v) (v) |
| 2113 | #define __le8 u8 |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2114 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2115 | #define read_eb_member(eb, ptr, type, member, result) ( \ |
| 2116 | read_extent_buffer(eb, (char *)(result), \ |
| 2117 | ((unsigned long)(ptr)) + \ |
| 2118 | offsetof(type, member), \ |
| 2119 | sizeof(((type *)0)->member))) |
| 2120 | |
| 2121 | #define write_eb_member(eb, ptr, type, member, result) ( \ |
| 2122 | write_extent_buffer(eb, (char *)(result), \ |
| 2123 | ((unsigned long)(ptr)) + \ |
| 2124 | offsetof(type, member), \ |
| 2125 | sizeof(((type *)0)->member))) |
| 2126 | |
Li Zefan | 18077bb | 2012-07-09 20:22:35 -0600 | [diff] [blame] | 2127 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
| 2128 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ |
| 2129 | unsigned long off, \ |
| 2130 | struct btrfs_map_token *token); \ |
| 2131 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ |
| 2132 | unsigned long off, u##bits val, \ |
| 2133 | struct btrfs_map_token *token); \ |
| 2134 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ |
| 2135 | unsigned long off) \ |
| 2136 | { \ |
| 2137 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ |
| 2138 | } \ |
| 2139 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ |
| 2140 | unsigned long off, u##bits val) \ |
| 2141 | { \ |
| 2142 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ |
| 2143 | } |
| 2144 | |
| 2145 | DECLARE_BTRFS_SETGET_BITS(8) |
| 2146 | DECLARE_BTRFS_SETGET_BITS(16) |
| 2147 | DECLARE_BTRFS_SETGET_BITS(32) |
| 2148 | DECLARE_BTRFS_SETGET_BITS(64) |
| 2149 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2150 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
Li Zefan | 18077bb | 2012-07-09 20:22:35 -0600 | [diff] [blame] | 2151 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
| 2152 | { \ |
| 2153 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 2154 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ |
| 2155 | } \ |
| 2156 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ |
| 2157 | u##bits val) \ |
| 2158 | { \ |
| 2159 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 2160 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ |
| 2161 | } \ |
| 2162 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ |
| 2163 | struct btrfs_map_token *token) \ |
| 2164 | { \ |
| 2165 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 2166 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ |
| 2167 | } \ |
| 2168 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ |
| 2169 | type *s, u##bits val, \ |
| 2170 | struct btrfs_map_token *token) \ |
| 2171 | { \ |
| 2172 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 2173 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ |
| 2174 | } |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2175 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2176 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ |
| 2177 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ |
| 2178 | { \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 2179 | type *p = page_address(eb->pages[0]); \ |
David Miller | df68b8a | 2008-02-15 10:40:52 -0500 | [diff] [blame] | 2180 | u##bits res = le##bits##_to_cpu(p->member); \ |
Chris Mason | 810191f | 2007-10-15 16:18:55 -0400 | [diff] [blame] | 2181 | return res; \ |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2182 | } \ |
| 2183 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ |
| 2184 | u##bits val) \ |
| 2185 | { \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 2186 | type *p = page_address(eb->pages[0]); \ |
David Miller | df68b8a | 2008-02-15 10:40:52 -0500 | [diff] [blame] | 2187 | p->member = cpu_to_le##bits(val); \ |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 2188 | } |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2189 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2190 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
| 2191 | static inline u##bits btrfs_##name(type *s) \ |
| 2192 | { \ |
| 2193 | return le##bits##_to_cpu(s->member); \ |
| 2194 | } \ |
| 2195 | static inline void btrfs_set_##name(type *s, u##bits val) \ |
| 2196 | { \ |
| 2197 | s->member = cpu_to_le##bits(val); \ |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2198 | } |
| 2199 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2200 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
| 2201 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); |
| 2202 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
| 2203 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); |
| 2204 | 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] | 2205 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
| 2206 | start_offset, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2207 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
| 2208 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2209 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
| 2210 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); |
| 2211 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 2212 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2213 | |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 2214 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
| 2215 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, |
| 2216 | total_bytes, 64); |
| 2217 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, |
| 2218 | bytes_used, 64); |
| 2219 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, |
| 2220 | io_align, 32); |
| 2221 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, |
| 2222 | io_width, 32); |
| 2223 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, |
| 2224 | sector_size, 32); |
| 2225 | 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] | 2226 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
| 2227 | dev_group, 32); |
| 2228 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, |
| 2229 | seek_speed, 8); |
| 2230 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, |
| 2231 | bandwidth, 8); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 2232 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
| 2233 | generation, 64); |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 2234 | |
Geert Uytterhoeven | 410ba3a | 2013-08-20 13:20:11 +0200 | [diff] [blame] | 2235 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2236 | { |
Geert Uytterhoeven | 410ba3a | 2013-08-20 13:20:11 +0200 | [diff] [blame] | 2237 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2238 | } |
| 2239 | |
Geert Uytterhoeven | 1473b24 | 2013-08-20 13:20:12 +0200 | [diff] [blame] | 2240 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 2241 | { |
Geert Uytterhoeven | 1473b24 | 2013-08-20 13:20:12 +0200 | [diff] [blame] | 2242 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 2243 | } |
| 2244 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2245 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2246 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
| 2247 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); |
| 2248 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); |
| 2249 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); |
| 2250 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); |
| 2251 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); |
| 2252 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); |
Chris Mason | 321aecc | 2008-04-16 10:49:51 -0400 | [diff] [blame] | 2253 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2254 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
| 2255 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); |
| 2256 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2257 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
| 2258 | { |
| 2259 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); |
| 2260 | } |
| 2261 | |
| 2262 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2263 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
| 2264 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, |
| 2265 | stripe_len, 64); |
| 2266 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, |
| 2267 | io_align, 32); |
| 2268 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, |
| 2269 | io_width, 32); |
| 2270 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, |
| 2271 | sector_size, 32); |
| 2272 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); |
| 2273 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, |
| 2274 | num_stripes, 16); |
Chris Mason | 321aecc | 2008-04-16 10:49:51 -0400 | [diff] [blame] | 2275 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
| 2276 | sub_stripes, 16); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2277 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
| 2278 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); |
| 2279 | |
| 2280 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, |
| 2281 | int nr) |
| 2282 | { |
| 2283 | unsigned long offset = (unsigned long)c; |
| 2284 | offset += offsetof(struct btrfs_chunk, stripe); |
| 2285 | offset += nr * sizeof(struct btrfs_stripe); |
| 2286 | return (struct btrfs_stripe *)offset; |
| 2287 | } |
| 2288 | |
Chris Mason | a443755 | 2008-04-18 10:29:38 -0400 | [diff] [blame] | 2289 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
| 2290 | { |
| 2291 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); |
| 2292 | } |
| 2293 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2294 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
| 2295 | struct btrfs_chunk *c, int nr) |
| 2296 | { |
| 2297 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); |
| 2298 | } |
| 2299 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2300 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
| 2301 | struct btrfs_chunk *c, int nr) |
| 2302 | { |
| 2303 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); |
| 2304 | } |
| 2305 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2306 | /* struct btrfs_block_group_item */ |
| 2307 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, |
| 2308 | used, 64); |
| 2309 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, |
| 2310 | used, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2311 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
| 2312 | struct btrfs_block_group_item, chunk_objectid, 64); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2313 | |
| 2314 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2315 | struct btrfs_block_group_item, chunk_objectid, 64); |
| 2316 | BTRFS_SETGET_FUNCS(disk_block_group_flags, |
| 2317 | struct btrfs_block_group_item, flags, 64); |
| 2318 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, |
| 2319 | struct btrfs_block_group_item, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2320 | |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 2321 | /* struct btrfs_inode_ref */ |
| 2322 | 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] | 2323 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 2324 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 2325 | /* struct btrfs_inode_extref */ |
| 2326 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, |
| 2327 | parent_objectid, 64); |
| 2328 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, |
| 2329 | name_len, 16); |
| 2330 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); |
| 2331 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2332 | /* struct btrfs_inode_item */ |
| 2333 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 2334 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2335 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2336 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
Yan Zheng | a76a3cd | 2008-10-09 11:46:29 -0400 | [diff] [blame] | 2337 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2338 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
| 2339 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); |
| 2340 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); |
| 2341 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); |
| 2342 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2343 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2344 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2345 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
| 2346 | generation, 64); |
| 2347 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, |
| 2348 | sequence, 64); |
| 2349 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, |
| 2350 | transid, 64); |
| 2351 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); |
| 2352 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, |
| 2353 | nbytes, 64); |
| 2354 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, |
| 2355 | block_group, 64); |
| 2356 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); |
| 2357 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); |
| 2358 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); |
| 2359 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); |
| 2360 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); |
| 2361 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2362 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2363 | static inline struct btrfs_timespec * |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2364 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2365 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2366 | unsigned long ptr = (unsigned long)inode_item; |
| 2367 | ptr += offsetof(struct btrfs_inode_item, atime); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2368 | return (struct btrfs_timespec *)ptr; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2369 | } |
| 2370 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2371 | static inline struct btrfs_timespec * |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2372 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2373 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2374 | unsigned long ptr = (unsigned long)inode_item; |
| 2375 | ptr += offsetof(struct btrfs_inode_item, mtime); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2376 | return (struct btrfs_timespec *)ptr; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2377 | } |
| 2378 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2379 | static inline struct btrfs_timespec * |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2380 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2381 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2382 | unsigned long ptr = (unsigned long)inode_item; |
| 2383 | ptr += offsetof(struct btrfs_inode_item, ctime); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2384 | return (struct btrfs_timespec *)ptr; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2385 | } |
| 2386 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2387 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
| 2388 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2389 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
| 2390 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2391 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2392 | /* struct btrfs_dev_extent */ |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2393 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
| 2394 | chunk_tree, 64); |
| 2395 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, |
| 2396 | chunk_objectid, 64); |
| 2397 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, |
| 2398 | chunk_offset, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2399 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
| 2400 | |
Geert Uytterhoeven | 231e88f | 2013-08-20 13:20:13 +0200 | [diff] [blame] | 2401 | 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] | 2402 | { |
| 2403 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); |
Geert Uytterhoeven | 231e88f | 2013-08-20 13:20:13 +0200 | [diff] [blame] | 2404 | return (unsigned long)dev + ptr; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2405 | } |
| 2406 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2407 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
| 2408 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, |
| 2409 | generation, 64); |
| 2410 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 2411 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2412 | 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] | 2413 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2414 | |
| 2415 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); |
| 2416 | |
| 2417 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, |
| 2418 | struct btrfs_tree_block_info *item, |
| 2419 | struct btrfs_disk_key *key) |
| 2420 | { |
| 2421 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
| 2422 | } |
| 2423 | |
| 2424 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, |
| 2425 | struct btrfs_tree_block_info *item, |
| 2426 | struct btrfs_disk_key *key) |
| 2427 | { |
| 2428 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
| 2429 | } |
| 2430 | |
| 2431 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
| 2432 | root, 64); |
| 2433 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, |
| 2434 | objectid, 64); |
| 2435 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, |
| 2436 | offset, 64); |
| 2437 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, |
| 2438 | count, 32); |
| 2439 | |
| 2440 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, |
| 2441 | count, 32); |
| 2442 | |
| 2443 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, |
| 2444 | type, 8); |
| 2445 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, |
| 2446 | offset, 64); |
| 2447 | |
| 2448 | static inline u32 btrfs_extent_inline_ref_size(int type) |
| 2449 | { |
| 2450 | if (type == BTRFS_TREE_BLOCK_REF_KEY || |
| 2451 | type == BTRFS_SHARED_BLOCK_REF_KEY) |
| 2452 | return sizeof(struct btrfs_extent_inline_ref); |
| 2453 | if (type == BTRFS_SHARED_DATA_REF_KEY) |
| 2454 | return sizeof(struct btrfs_shared_data_ref) + |
| 2455 | sizeof(struct btrfs_extent_inline_ref); |
| 2456 | if (type == BTRFS_EXTENT_DATA_REF_KEY) |
| 2457 | return sizeof(struct btrfs_extent_data_ref) + |
| 2458 | offsetof(struct btrfs_extent_inline_ref, offset); |
| 2459 | BUG(); |
| 2460 | return 0; |
| 2461 | } |
| 2462 | |
| 2463 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); |
| 2464 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, |
| 2465 | generation, 64); |
| 2466 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); |
| 2467 | 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] | 2468 | |
| 2469 | /* struct btrfs_node */ |
| 2470 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 2471 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2472 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
| 2473 | blockptr, 64); |
| 2474 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, |
| 2475 | generation, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2476 | |
| 2477 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2478 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2479 | unsigned long ptr; |
| 2480 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2481 | sizeof(struct btrfs_key_ptr) * nr; |
| 2482 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2483 | } |
| 2484 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2485 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
| 2486 | int nr, u64 val) |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2487 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2488 | unsigned long ptr; |
| 2489 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2490 | sizeof(struct btrfs_key_ptr) * nr; |
| 2491 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2492 | } |
| 2493 | |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 2494 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
| 2495 | { |
| 2496 | unsigned long ptr; |
| 2497 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2498 | sizeof(struct btrfs_key_ptr) * nr; |
| 2499 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); |
| 2500 | } |
| 2501 | |
| 2502 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, |
| 2503 | int nr, u64 val) |
| 2504 | { |
| 2505 | unsigned long ptr; |
| 2506 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2507 | sizeof(struct btrfs_key_ptr) * nr; |
| 2508 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); |
| 2509 | } |
| 2510 | |
Chris Mason | 810191f | 2007-10-15 16:18:55 -0400 | [diff] [blame] | 2511 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2512 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2513 | return offsetof(struct btrfs_node, ptrs) + |
| 2514 | sizeof(struct btrfs_key_ptr) * nr; |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2515 | } |
| 2516 | |
Chris Mason | e644d02 | 2007-11-06 15:09:29 -0500 | [diff] [blame] | 2517 | void btrfs_node_key(struct extent_buffer *eb, |
| 2518 | struct btrfs_disk_key *disk_key, int nr); |
| 2519 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2520 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
| 2521 | struct btrfs_disk_key *disk_key, int nr) |
| 2522 | { |
| 2523 | unsigned long ptr; |
| 2524 | ptr = btrfs_node_key_ptr_offset(nr); |
| 2525 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, |
| 2526 | struct btrfs_key_ptr, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2527 | } |
| 2528 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2529 | /* struct btrfs_item */ |
| 2530 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); |
| 2531 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2532 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
| 2533 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2534 | |
| 2535 | static inline unsigned long btrfs_item_nr_offset(int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2536 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2537 | return offsetof(struct btrfs_leaf, items) + |
| 2538 | sizeof(struct btrfs_item) * nr; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2539 | } |
| 2540 | |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2541 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2542 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2543 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2544 | } |
| 2545 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2546 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
| 2547 | struct btrfs_item *item) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2548 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2549 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2550 | } |
| 2551 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2552 | 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] | 2553 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2554 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2555 | } |
| 2556 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2557 | 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] | 2558 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2559 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2560 | } |
| 2561 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2562 | 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] | 2563 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2564 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2565 | } |
| 2566 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2567 | static inline void btrfs_item_key(struct extent_buffer *eb, |
| 2568 | struct btrfs_disk_key *disk_key, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2569 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2570 | struct btrfs_item *item = btrfs_item_nr(nr); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2571 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2572 | } |
| 2573 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2574 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
| 2575 | struct btrfs_disk_key *disk_key, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2576 | { |
Ross Kirk | dd3cc16 | 2013-09-16 15:58:09 +0100 | [diff] [blame] | 2577 | struct btrfs_item *item = btrfs_item_nr(nr); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2578 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2579 | } |
| 2580 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2581 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
| 2582 | |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 2583 | /* |
| 2584 | * struct btrfs_root_ref |
| 2585 | */ |
| 2586 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); |
| 2587 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); |
| 2588 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); |
| 2589 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2590 | /* struct btrfs_dir_item */ |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 2591 | 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] | 2592 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
| 2593 | 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] | 2594 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2595 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
| 2596 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, |
| 2597 | data_len, 16); |
| 2598 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, |
| 2599 | name_len, 16); |
| 2600 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, |
| 2601 | transid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2602 | |
| 2603 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
| 2604 | struct btrfs_dir_item *item, |
| 2605 | struct btrfs_disk_key *key) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2606 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2607 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2608 | } |
| 2609 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2610 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
| 2611 | struct btrfs_dir_item *item, |
| 2612 | struct btrfs_disk_key *key) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2613 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2614 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2615 | } |
| 2616 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 2617 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
| 2618 | num_entries, 64); |
| 2619 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, |
| 2620 | num_bitmaps, 64); |
| 2621 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, |
| 2622 | generation, 64); |
| 2623 | |
| 2624 | static inline void btrfs_free_space_key(struct extent_buffer *eb, |
| 2625 | struct btrfs_free_space_header *h, |
| 2626 | struct btrfs_disk_key *key) |
| 2627 | { |
| 2628 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); |
| 2629 | } |
| 2630 | |
| 2631 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, |
| 2632 | struct btrfs_free_space_header *h, |
| 2633 | struct btrfs_disk_key *key) |
| 2634 | { |
| 2635 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); |
| 2636 | } |
| 2637 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2638 | /* struct btrfs_disk_key */ |
| 2639 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, |
| 2640 | objectid, 64); |
| 2641 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); |
| 2642 | 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] | 2643 | |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2644 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
| 2645 | struct btrfs_disk_key *disk) |
| 2646 | { |
| 2647 | cpu->offset = le64_to_cpu(disk->offset); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2648 | cpu->type = disk->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2649 | cpu->objectid = le64_to_cpu(disk->objectid); |
| 2650 | } |
| 2651 | |
| 2652 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, |
| 2653 | struct btrfs_key *cpu) |
| 2654 | { |
| 2655 | disk->offset = cpu_to_le64(cpu->offset); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2656 | disk->type = cpu->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2657 | disk->objectid = cpu_to_le64(cpu->objectid); |
| 2658 | } |
| 2659 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2660 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
| 2661 | struct btrfs_key *key, int nr) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2662 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2663 | struct btrfs_disk_key disk_key; |
| 2664 | btrfs_node_key(eb, &disk_key, nr); |
| 2665 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2666 | } |
| 2667 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2668 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
| 2669 | struct btrfs_key *key, int nr) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2670 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2671 | struct btrfs_disk_key disk_key; |
| 2672 | btrfs_item_key(eb, &disk_key, nr); |
| 2673 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2674 | } |
| 2675 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2676 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
| 2677 | struct btrfs_dir_item *item, |
| 2678 | struct btrfs_key *key) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2679 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2680 | struct btrfs_disk_key disk_key; |
| 2681 | btrfs_dir_item_key(eb, item, &disk_key); |
| 2682 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2683 | } |
| 2684 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2685 | |
| 2686 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2687 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2688 | return key->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2689 | } |
| 2690 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2691 | 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] | 2692 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2693 | key->type = val; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2694 | } |
| 2695 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2696 | /* struct btrfs_header */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2697 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2698 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
| 2699 | generation, 64); |
| 2700 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); |
| 2701 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 2702 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2703 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2704 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
| 2705 | generation, 64); |
| 2706 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); |
| 2707 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, |
| 2708 | nritems, 32); |
| 2709 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2710 | |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 2711 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
| 2712 | { |
| 2713 | return (btrfs_header_flags(eb) & flag) == flag; |
| 2714 | } |
| 2715 | |
| 2716 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) |
| 2717 | { |
| 2718 | u64 flags = btrfs_header_flags(eb); |
| 2719 | btrfs_set_header_flags(eb, flags | flag); |
| 2720 | return (flags & flag) == flag; |
| 2721 | } |
| 2722 | |
| 2723 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) |
| 2724 | { |
| 2725 | u64 flags = btrfs_header_flags(eb); |
| 2726 | btrfs_set_header_flags(eb, flags & ~flag); |
| 2727 | return (flags & flag) == flag; |
| 2728 | } |
| 2729 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2730 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
| 2731 | { |
| 2732 | u64 flags = btrfs_header_flags(eb); |
| 2733 | return flags >> BTRFS_BACKREF_REV_SHIFT; |
| 2734 | } |
| 2735 | |
| 2736 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, |
| 2737 | int rev) |
| 2738 | { |
| 2739 | u64 flags = btrfs_header_flags(eb); |
| 2740 | flags &= ~BTRFS_BACKREF_REV_MASK; |
| 2741 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; |
| 2742 | btrfs_set_header_flags(eb, flags); |
| 2743 | } |
| 2744 | |
Ross Kirk | 0a4e558 | 2013-09-24 10:12:38 +0100 | [diff] [blame] | 2745 | static inline unsigned long btrfs_header_fsid(void) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2746 | { |
Geert Uytterhoeven | fba6aa7 | 2013-08-20 13:20:14 +0200 | [diff] [blame] | 2747 | return offsetof(struct btrfs_header, fsid); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2748 | } |
| 2749 | |
Geert Uytterhoeven | b308bc2 | 2013-08-20 13:20:15 +0200 | [diff] [blame] | 2750 | 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] | 2751 | { |
Geert Uytterhoeven | b308bc2 | 2013-08-20 13:20:15 +0200 | [diff] [blame] | 2752 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2753 | } |
| 2754 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2755 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
Chris Mason | 7518a23 | 2007-03-12 12:01:18 -0400 | [diff] [blame] | 2756 | { |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 2757 | return btrfs_header_level(eb) == 0; |
Chris Mason | 7518a23 | 2007-03-12 12:01:18 -0400 | [diff] [blame] | 2758 | } |
| 2759 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2760 | /* struct btrfs_root_item */ |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2761 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
| 2762 | generation, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2763 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2764 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
| 2765 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2766 | |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2767 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
| 2768 | generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2769 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
| 2770 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2771 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
| 2772 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2773 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2774 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
| 2775 | 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] | 2776 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
| 2777 | last_snapshot, 64); |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 2778 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
| 2779 | generation_v2, 64); |
| 2780 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, |
| 2781 | ctransid, 64); |
| 2782 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, |
| 2783 | otransid, 64); |
| 2784 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, |
| 2785 | stransid, 64); |
| 2786 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, |
| 2787 | rtransid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2788 | |
Li Zefan | b83cc96 | 2010-12-20 16:04:08 +0800 | [diff] [blame] | 2789 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
| 2790 | { |
Al Viro | 6ed3cf2 | 2012-04-13 11:49:04 -0400 | [diff] [blame] | 2791 | 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] | 2792 | } |
| 2793 | |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 2794 | /* struct btrfs_root_backup */ |
| 2795 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, |
| 2796 | tree_root, 64); |
| 2797 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, |
| 2798 | tree_root_gen, 64); |
| 2799 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, |
| 2800 | tree_root_level, 8); |
| 2801 | |
| 2802 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, |
| 2803 | chunk_root, 64); |
| 2804 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, |
| 2805 | chunk_root_gen, 64); |
| 2806 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, |
| 2807 | chunk_root_level, 8); |
| 2808 | |
| 2809 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, |
| 2810 | extent_root, 64); |
| 2811 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, |
| 2812 | extent_root_gen, 64); |
| 2813 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, |
| 2814 | extent_root_level, 8); |
| 2815 | |
| 2816 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, |
| 2817 | fs_root, 64); |
| 2818 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, |
| 2819 | fs_root_gen, 64); |
| 2820 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, |
| 2821 | fs_root_level, 8); |
| 2822 | |
| 2823 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, |
| 2824 | dev_root, 64); |
| 2825 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, |
| 2826 | dev_root_gen, 64); |
| 2827 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, |
| 2828 | dev_root_level, 8); |
| 2829 | |
| 2830 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, |
| 2831 | csum_root, 64); |
| 2832 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, |
| 2833 | csum_root_gen, 64); |
| 2834 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, |
| 2835 | csum_root_level, 8); |
| 2836 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, |
| 2837 | total_bytes, 64); |
| 2838 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, |
| 2839 | bytes_used, 64); |
| 2840 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, |
| 2841 | num_devices, 64); |
| 2842 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2843 | /* struct btrfs_balance_item */ |
| 2844 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2845 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2846 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
| 2847 | struct btrfs_balance_item *bi, |
| 2848 | struct btrfs_disk_balance_args *ba) |
| 2849 | { |
| 2850 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); |
| 2851 | } |
| 2852 | |
| 2853 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, |
| 2854 | struct btrfs_balance_item *bi, |
| 2855 | struct btrfs_disk_balance_args *ba) |
| 2856 | { |
| 2857 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); |
| 2858 | } |
| 2859 | |
| 2860 | static inline void btrfs_balance_meta(struct extent_buffer *eb, |
| 2861 | struct btrfs_balance_item *bi, |
| 2862 | struct btrfs_disk_balance_args *ba) |
| 2863 | { |
| 2864 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); |
| 2865 | } |
| 2866 | |
| 2867 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, |
| 2868 | struct btrfs_balance_item *bi, |
| 2869 | struct btrfs_disk_balance_args *ba) |
| 2870 | { |
| 2871 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); |
| 2872 | } |
| 2873 | |
| 2874 | static inline void btrfs_balance_sys(struct extent_buffer *eb, |
| 2875 | struct btrfs_balance_item *bi, |
| 2876 | struct btrfs_disk_balance_args *ba) |
| 2877 | { |
| 2878 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); |
| 2879 | } |
| 2880 | |
| 2881 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, |
| 2882 | struct btrfs_balance_item *bi, |
| 2883 | struct btrfs_disk_balance_args *ba) |
| 2884 | { |
| 2885 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); |
| 2886 | } |
| 2887 | |
| 2888 | static inline void |
| 2889 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, |
| 2890 | struct btrfs_disk_balance_args *disk) |
| 2891 | { |
| 2892 | memset(cpu, 0, sizeof(*cpu)); |
| 2893 | |
| 2894 | cpu->profiles = le64_to_cpu(disk->profiles); |
| 2895 | cpu->usage = le64_to_cpu(disk->usage); |
| 2896 | cpu->devid = le64_to_cpu(disk->devid); |
| 2897 | cpu->pstart = le64_to_cpu(disk->pstart); |
| 2898 | cpu->pend = le64_to_cpu(disk->pend); |
| 2899 | cpu->vstart = le64_to_cpu(disk->vstart); |
| 2900 | cpu->vend = le64_to_cpu(disk->vend); |
| 2901 | cpu->target = le64_to_cpu(disk->target); |
| 2902 | cpu->flags = le64_to_cpu(disk->flags); |
David Sterba | 7d824b6 | 2014-05-07 17:37:51 +0200 | [diff] [blame^] | 2903 | cpu->limit = le64_to_cpu(disk->limit); |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2904 | } |
| 2905 | |
| 2906 | static inline void |
| 2907 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, |
| 2908 | struct btrfs_balance_args *cpu) |
| 2909 | { |
| 2910 | memset(disk, 0, sizeof(*disk)); |
| 2911 | |
| 2912 | disk->profiles = cpu_to_le64(cpu->profiles); |
| 2913 | disk->usage = cpu_to_le64(cpu->usage); |
| 2914 | disk->devid = cpu_to_le64(cpu->devid); |
| 2915 | disk->pstart = cpu_to_le64(cpu->pstart); |
| 2916 | disk->pend = cpu_to_le64(cpu->pend); |
| 2917 | disk->vstart = cpu_to_le64(cpu->vstart); |
| 2918 | disk->vend = cpu_to_le64(cpu->vend); |
| 2919 | disk->target = cpu_to_le64(cpu->target); |
| 2920 | disk->flags = cpu_to_le64(cpu->flags); |
David Sterba | 7d824b6 | 2014-05-07 17:37:51 +0200 | [diff] [blame^] | 2921 | disk->limit = cpu_to_le64(cpu->limit); |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2922 | } |
| 2923 | |
| 2924 | /* struct btrfs_super_block */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2925 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
Chris Mason | a061fc8 | 2008-05-07 11:43:44 -0400 | [diff] [blame] | 2926 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2927 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
| 2928 | generation, 64); |
| 2929 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2930 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
| 2931 | struct btrfs_super_block, sys_chunk_array_size, 32); |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2932 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
| 2933 | struct btrfs_super_block, chunk_root_generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2934 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
| 2935 | root_level, 8); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2936 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
| 2937 | chunk_root, 64); |
| 2938 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2939 | chunk_root_level, 8); |
| 2940 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, |
| 2941 | log_root, 64); |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 2942 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
| 2943 | log_root_transid, 64); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2944 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
| 2945 | log_root_level, 8); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2946 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
| 2947 | total_bytes, 64); |
| 2948 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, |
| 2949 | bytes_used, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2950 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
| 2951 | sectorsize, 32); |
| 2952 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, |
| 2953 | nodesize, 32); |
| 2954 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, |
| 2955 | leafsize, 32); |
Chris Mason | 87ee04e | 2007-11-30 11:30:34 -0500 | [diff] [blame] | 2956 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
| 2957 | stripesize, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2958 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
| 2959 | root_dir_objectid, 64); |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 2960 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
| 2961 | num_devices, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2962 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
| 2963 | compat_flags, 64); |
| 2964 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, |
Josef Bacik | 1253483 | 2009-12-17 21:32:27 +0000 | [diff] [blame] | 2965 | compat_ro_flags, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2966 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
| 2967 | incompat_flags, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2968 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
| 2969 | csum_type, 16); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 2970 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
| 2971 | cache_generation, 64); |
Qu Wenruo | 3cae210 | 2013-07-16 11:19:18 +0800 | [diff] [blame] | 2972 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
Stefan Behrens | 2643279 | 2013-08-15 17:11:22 +0200 | [diff] [blame] | 2973 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
| 2974 | uuid_tree_generation, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2975 | |
| 2976 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) |
| 2977 | { |
David Sterba | 1104a88 | 2013-03-06 15:57:46 +0100 | [diff] [blame] | 2978 | u16 t = btrfs_super_csum_type(s); |
| 2979 | /* |
| 2980 | * csum type is validated at mount time |
| 2981 | */ |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2982 | return btrfs_csum_sizes[t]; |
| 2983 | } |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2984 | |
| 2985 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 2986 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2987 | return offsetof(struct btrfs_leaf, items); |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 2988 | } |
| 2989 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2990 | /* struct btrfs_file_extent_item */ |
| 2991 | 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] | 2992 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
| 2993 | struct btrfs_file_extent_item, disk_bytenr, 64); |
| 2994 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, |
| 2995 | struct btrfs_file_extent_item, offset, 64); |
| 2996 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, |
| 2997 | struct btrfs_file_extent_item, generation, 64); |
| 2998 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, |
| 2999 | struct btrfs_file_extent_item, num_bytes, 64); |
Josef Bacik | e20d6c5 | 2013-11-13 21:11:49 -0500 | [diff] [blame] | 3000 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
| 3001 | struct btrfs_file_extent_item, disk_num_bytes, 64); |
| 3002 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, |
| 3003 | struct btrfs_file_extent_item, compression, 8); |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 3004 | |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 3005 | static inline unsigned long |
| 3006 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) |
Chris Mason | 236454df | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 3007 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3008 | unsigned long offset = (unsigned long)e; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3009 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3010 | return offset; |
Chris Mason | 236454df | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 3011 | } |
| 3012 | |
| 3013 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) |
| 3014 | { |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3015 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
Chris Mason | 236454df | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 3016 | } |
| 3017 | |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3018 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
| 3019 | disk_bytenr, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3020 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
| 3021 | generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3022 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
| 3023 | disk_num_bytes, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3024 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
| 3025 | offset, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3026 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
| 3027 | num_bytes, 64); |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 3028 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
| 3029 | ram_bytes, 64); |
| 3030 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, |
| 3031 | compression, 8); |
| 3032 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, |
| 3033 | encryption, 8); |
| 3034 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, |
| 3035 | other_encoding, 16); |
| 3036 | |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 3037 | /* |
| 3038 | * this returns the number of bytes used by the item on disk, minus the |
| 3039 | * size of any extent headers. If a file is compressed on disk, this is |
| 3040 | * the compressed size |
| 3041 | */ |
| 3042 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, |
| 3043 | struct btrfs_item *e) |
| 3044 | { |
| 3045 | unsigned long offset; |
| 3046 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); |
| 3047 | return btrfs_item_size(eb, e) - offset; |
| 3048 | } |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 3049 | |
Chris Mason | 514ac8a | 2014-01-03 21:07:00 -0800 | [diff] [blame] | 3050 | /* this returns the number of file bytes represented by the inline item. |
| 3051 | * If an item is compressed, this is the uncompressed size |
| 3052 | */ |
| 3053 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, |
| 3054 | int slot, |
| 3055 | struct btrfs_file_extent_item *fi) |
| 3056 | { |
| 3057 | struct btrfs_map_token token; |
| 3058 | |
| 3059 | btrfs_init_map_token(&token); |
| 3060 | /* |
| 3061 | * return the space used on disk if this item isn't |
| 3062 | * compressed or encoded |
| 3063 | */ |
| 3064 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && |
| 3065 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && |
| 3066 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { |
| 3067 | return btrfs_file_extent_inline_item_len(eb, |
| 3068 | btrfs_item_nr(slot)); |
| 3069 | } |
| 3070 | |
| 3071 | /* otherwise use the ram bytes field */ |
| 3072 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); |
| 3073 | } |
| 3074 | |
| 3075 | |
Stefan Behrens | 733f4fb | 2012-05-25 16:06:10 +0200 | [diff] [blame] | 3076 | /* btrfs_dev_stats_item */ |
| 3077 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, |
| 3078 | struct btrfs_dev_stats_item *ptr, |
| 3079 | int index) |
| 3080 | { |
| 3081 | u64 val; |
| 3082 | |
| 3083 | read_extent_buffer(eb, &val, |
| 3084 | offsetof(struct btrfs_dev_stats_item, values) + |
| 3085 | ((unsigned long)ptr) + (index * sizeof(u64)), |
| 3086 | sizeof(val)); |
| 3087 | return val; |
| 3088 | } |
| 3089 | |
| 3090 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, |
| 3091 | struct btrfs_dev_stats_item *ptr, |
| 3092 | int index, u64 val) |
| 3093 | { |
| 3094 | write_extent_buffer(eb, &val, |
| 3095 | offsetof(struct btrfs_dev_stats_item, values) + |
| 3096 | ((unsigned long)ptr) + (index * sizeof(u64)), |
| 3097 | sizeof(val)); |
| 3098 | } |
| 3099 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 3100 | /* btrfs_qgroup_status_item */ |
| 3101 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, |
| 3102 | generation, 64); |
| 3103 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, |
| 3104 | version, 64); |
| 3105 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, |
| 3106 | flags, 64); |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 3107 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
| 3108 | rescan, 64); |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 3109 | |
| 3110 | /* btrfs_qgroup_info_item */ |
| 3111 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, |
| 3112 | generation, 64); |
| 3113 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); |
| 3114 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, |
| 3115 | rfer_cmpr, 64); |
| 3116 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); |
| 3117 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, |
| 3118 | excl_cmpr, 64); |
| 3119 | |
| 3120 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, |
| 3121 | struct btrfs_qgroup_info_item, generation, 64); |
| 3122 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, |
| 3123 | rfer, 64); |
| 3124 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, |
| 3125 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); |
| 3126 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, |
| 3127 | excl, 64); |
| 3128 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, |
| 3129 | struct btrfs_qgroup_info_item, excl_cmpr, 64); |
| 3130 | |
| 3131 | /* btrfs_qgroup_limit_item */ |
| 3132 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, |
| 3133 | flags, 64); |
| 3134 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, |
| 3135 | max_rfer, 64); |
| 3136 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, |
| 3137 | max_excl, 64); |
| 3138 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, |
| 3139 | rsv_rfer, 64); |
| 3140 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, |
| 3141 | rsv_excl, 64); |
| 3142 | |
Stefan Behrens | a2bff64 | 2012-11-05 17:32:20 +0100 | [diff] [blame] | 3143 | /* btrfs_dev_replace_item */ |
| 3144 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, |
| 3145 | struct btrfs_dev_replace_item, src_devid, 64); |
| 3146 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, |
| 3147 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, |
| 3148 | 64); |
| 3149 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, |
| 3150 | replace_state, 64); |
| 3151 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, |
| 3152 | time_started, 64); |
| 3153 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, |
| 3154 | time_stopped, 64); |
| 3155 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, |
| 3156 | num_write_errors, 64); |
| 3157 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, |
| 3158 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, |
| 3159 | 64); |
| 3160 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, |
| 3161 | cursor_left, 64); |
| 3162 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, |
| 3163 | cursor_right, 64); |
| 3164 | |
| 3165 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, |
| 3166 | struct btrfs_dev_replace_item, src_devid, 64); |
| 3167 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, |
| 3168 | struct btrfs_dev_replace_item, |
| 3169 | cont_reading_from_srcdev_mode, 64); |
| 3170 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, |
| 3171 | struct btrfs_dev_replace_item, replace_state, 64); |
| 3172 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, |
| 3173 | struct btrfs_dev_replace_item, time_started, 64); |
| 3174 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, |
| 3175 | struct btrfs_dev_replace_item, time_stopped, 64); |
| 3176 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, |
| 3177 | struct btrfs_dev_replace_item, num_write_errors, 64); |
| 3178 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, |
| 3179 | struct btrfs_dev_replace_item, |
| 3180 | num_uncorrectable_read_errors, 64); |
| 3181 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, |
| 3182 | struct btrfs_dev_replace_item, cursor_left, 64); |
| 3183 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, |
| 3184 | struct btrfs_dev_replace_item, cursor_right, 64); |
| 3185 | |
Al Viro | 815745c | 2011-11-17 15:40:49 -0500 | [diff] [blame] | 3186 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 3187 | { |
| 3188 | return sb->s_fs_info; |
| 3189 | } |
| 3190 | |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 3191 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
| 3192 | { |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3193 | if (level == 0) |
| 3194 | return root->leafsize; |
| 3195 | return root->nodesize; |
| 3196 | } |
| 3197 | |
Chris Mason | 4beb1b8 | 2007-03-14 10:31:29 -0400 | [diff] [blame] | 3198 | /* helper function to cast into the data area of the leaf. */ |
| 3199 | #define btrfs_item_ptr(leaf, slot, type) \ |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 3200 | ((type *)(btrfs_leaf_data(leaf) + \ |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3201 | btrfs_item_offset_nr(leaf, slot))) |
| 3202 | |
| 3203 | #define btrfs_item_ptr_offset(leaf, slot) \ |
| 3204 | ((unsigned long)(btrfs_leaf_data(leaf) + \ |
| 3205 | btrfs_item_offset_nr(leaf, slot))) |
Chris Mason | 4beb1b8 | 2007-03-14 10:31:29 -0400 | [diff] [blame] | 3206 | |
Josef Bacik | 6737773 | 2010-09-16 16:19:09 -0400 | [diff] [blame] | 3207 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
| 3208 | { |
| 3209 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && |
| 3210 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); |
| 3211 | } |
| 3212 | |
Josef Bacik | 3b16a4e | 2011-09-21 15:05:58 -0400 | [diff] [blame] | 3213 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
| 3214 | { |
| 3215 | return mapping_gfp_mask(mapping) & ~__GFP_FS; |
| 3216 | } |
| 3217 | |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 3218 | /* extent-tree.c */ |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3219 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
Josef Bacik | 9e0baf6 | 2011-07-15 15:16:44 +0000 | [diff] [blame] | 3220 | unsigned num_items) |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3221 | { |
| 3222 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * |
Josef Bacik | c4fbb43 | 2013-09-17 10:50:06 -0400 | [diff] [blame] | 3223 | 2 * num_items; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3224 | } |
| 3225 | |
Josef Bacik | 0712718 | 2011-08-19 10:29:59 -0400 | [diff] [blame] | 3226 | /* |
| 3227 | * Doing a truncate won't result in new nodes or leaves, just what we need for |
| 3228 | * COW. |
| 3229 | */ |
| 3230 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, |
| 3231 | unsigned num_items) |
| 3232 | { |
| 3233 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * |
| 3234 | num_items; |
| 3235 | } |
| 3236 | |
Josef Bacik | 1be41b7 | 2013-06-12 13:56:06 -0400 | [diff] [blame] | 3237 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
| 3238 | struct btrfs_root *root); |
Josef Bacik | 0a2b2a8 | 2014-01-23 10:54:11 -0500 | [diff] [blame] | 3239 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
| 3240 | struct btrfs_root *root); |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 3241 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
Chris Mason | 56bec29 | 2009-03-13 10:10:06 -0400 | [diff] [blame] | 3242 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
| 3243 | struct btrfs_root *root, unsigned long count); |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 3244 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 3245 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
| 3246 | struct btrfs_root *root, u64 bytenr, |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 3247 | u64 offset, int metadata, u64 *refs, u64 *flags); |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 3248 | int btrfs_pin_extent(struct btrfs_root *root, |
| 3249 | u64 bytenr, u64 num, int reserved); |
Liu Bo | dcfac41 | 2012-12-27 09:01:20 +0000 | [diff] [blame] | 3250 | int btrfs_pin_extent_for_log_replay(struct btrfs_root *root, |
Chris Mason | e688b725 | 2011-10-31 20:52:39 -0400 | [diff] [blame] | 3251 | u64 bytenr, u64 num_bytes); |
Josef Bacik | 8c2a1a3 | 2013-06-06 13:19:32 -0400 | [diff] [blame] | 3252 | int btrfs_exclude_logged_extents(struct btrfs_root *root, |
| 3253 | struct extent_buffer *eb); |
Yan Zheng | 80ff385 | 2008-10-30 14:20:02 -0400 | [diff] [blame] | 3254 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3255 | struct btrfs_root *root, |
| 3256 | u64 objectid, u64 offset, u64 bytenr); |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 3257 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
| 3258 | struct btrfs_fs_info *info, |
| 3259 | u64 bytenr); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3260 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
Jeff Mahoney | 6ab0a20 | 2013-11-01 13:07:04 -0400 | [diff] [blame] | 3261 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3262 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3263 | struct btrfs_root *root, u32 blocksize, |
| 3264 | u64 parent, u64 root_objectid, |
| 3265 | struct btrfs_disk_key *key, int level, |
Jan Schmidt | 5581a51 | 2012-05-16 17:04:52 +0200 | [diff] [blame] | 3266 | u64 hint, u64 empty_size); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 3267 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
| 3268 | struct btrfs_root *root, |
| 3269 | struct extent_buffer *buf, |
Jan Schmidt | 5581a51 | 2012-05-16 17:04:52 +0200 | [diff] [blame] | 3270 | u64 parent, int last_ref); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3271 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
| 3272 | struct btrfs_root *root, |
| 3273 | u64 root_objectid, u64 owner, |
| 3274 | u64 offset, struct btrfs_key *ins); |
| 3275 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
| 3276 | struct btrfs_root *root, |
| 3277 | u64 root_objectid, u64 owner, u64 offset, |
| 3278 | struct btrfs_key *ins); |
Josef Bacik | 0036158 | 2013-08-14 14:02:47 -0400 | [diff] [blame] | 3279 | int btrfs_reserve_extent(struct btrfs_root *root, u64 num_bytes, |
| 3280 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
| 3281 | struct btrfs_key *ins, int is_data); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3282 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
Arne Jansen | 66d7e7f | 2011-09-12 15:26:38 +0200 | [diff] [blame] | 3283 | struct extent_buffer *buf, int full_backref, int for_cow); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3284 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
Arne Jansen | 66d7e7f | 2011-09-12 15:26:38 +0200 | [diff] [blame] | 3285 | struct extent_buffer *buf, int full_backref, int for_cow); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3286 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
| 3287 | struct btrfs_root *root, |
| 3288 | u64 bytenr, u64 num_bytes, u64 flags, |
Josef Bacik | b1c79e0 | 2013-05-09 13:49:30 -0400 | [diff] [blame] | 3289 | int level, int is_data); |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 3290 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
| 3291 | struct btrfs_root *root, |
Arne Jansen | 66d7e7f | 2011-09-12 15:26:38 +0200 | [diff] [blame] | 3292 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
| 3293 | u64 owner, u64 offset, int for_cow); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3294 | |
Chris Mason | 65b51a0 | 2008-08-01 15:11:20 -0400 | [diff] [blame] | 3295 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
Chris Mason | e688b725 | 2011-10-31 20:52:39 -0400 | [diff] [blame] | 3296 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
| 3297 | u64 start, u64 len); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3298 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
| 3299 | struct btrfs_root *root); |
Chris Mason | ccd467d | 2007-06-28 15:57:36 -0400 | [diff] [blame] | 3300 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 3301 | struct btrfs_root *root); |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 3302 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 3303 | struct btrfs_root *root, |
| 3304 | u64 bytenr, u64 num_bytes, u64 parent, |
Arne Jansen | 66d7e7f | 2011-09-12 15:26:38 +0200 | [diff] [blame] | 3305 | u64 root_objectid, u64 owner, u64 offset, int for_cow); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3306 | |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 3307 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
| 3308 | struct btrfs_root *root); |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 3309 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 3310 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
| 3311 | int btrfs_read_block_groups(struct btrfs_root *root); |
Josef Bacik | ba1bf48 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 3312 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 3313 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
| 3314 | struct btrfs_root *root, u64 bytes_used, |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 3315 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 3316 | u64 size); |
Zheng Yan | 1a40e23 | 2008-09-26 10:09:34 -0400 | [diff] [blame] | 3317 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
| 3318 | struct btrfs_root *root, u64 group_start); |
Josef Bacik | ea658ba | 2012-09-11 16:57:25 -0400 | [diff] [blame] | 3319 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
| 3320 | struct btrfs_root *root); |
Miao Xie | 6d07bce | 2011-01-05 10:07:31 +0000 | [diff] [blame] | 3321 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 3322 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 3323 | |
| 3324 | enum btrfs_reserve_flush_enum { |
| 3325 | /* If we are in the transaction, we can't flush anything.*/ |
| 3326 | BTRFS_RESERVE_NO_FLUSH, |
| 3327 | /* |
| 3328 | * Flushing delalloc may cause deadlock somewhere, in this |
| 3329 | * case, use FLUSH LIMIT |
| 3330 | */ |
| 3331 | BTRFS_RESERVE_FLUSH_LIMIT, |
| 3332 | BTRFS_RESERVE_FLUSH_ALL, |
| 3333 | }; |
| 3334 | |
Yan, Zheng | 0ca1f7c | 2010-05-16 10:48:47 -0400 | [diff] [blame] | 3335 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
| 3336 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 3337 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
| 3338 | struct btrfs_root *root); |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 3339 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
| 3340 | struct inode *inode); |
| 3341 | void btrfs_orphan_release_metadata(struct inode *inode); |
Miao Xie | d5c1207 | 2013-02-28 10:04:33 +0000 | [diff] [blame] | 3342 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
| 3343 | struct btrfs_block_rsv *rsv, |
| 3344 | int nitems, |
Jeff Mahoney | ee3441b | 2013-07-09 16:37:21 -0400 | [diff] [blame] | 3345 | u64 *qgroup_reserved, bool use_global_rsv); |
Miao Xie | d5c1207 | 2013-02-28 10:04:33 +0000 | [diff] [blame] | 3346 | void btrfs_subvolume_release_metadata(struct btrfs_root *root, |
| 3347 | struct btrfs_block_rsv *rsv, |
| 3348 | u64 qgroup_reserved); |
Yan, Zheng | 0ca1f7c | 2010-05-16 10:48:47 -0400 | [diff] [blame] | 3349 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
| 3350 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); |
| 3351 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); |
| 3352 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 3353 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
| 3354 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, |
| 3355 | unsigned short type); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 3356 | void btrfs_free_block_rsv(struct btrfs_root *root, |
| 3357 | struct btrfs_block_rsv *rsv); |
Josef Bacik | 4a92b1b | 2011-08-30 12:34:28 -0400 | [diff] [blame] | 3358 | int btrfs_block_rsv_add(struct btrfs_root *root, |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 3359 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
| 3360 | enum btrfs_reserve_flush_enum flush); |
Josef Bacik | 4a92b1b | 2011-08-30 12:34:28 -0400 | [diff] [blame] | 3361 | int btrfs_block_rsv_check(struct btrfs_root *root, |
Josef Bacik | 36ba022 | 2011-10-18 12:15:48 -0400 | [diff] [blame] | 3362 | struct btrfs_block_rsv *block_rsv, int min_factor); |
| 3363 | int btrfs_block_rsv_refill(struct btrfs_root *root, |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 3364 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
| 3365 | enum btrfs_reserve_flush_enum flush); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 3366 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
| 3367 | struct btrfs_block_rsv *dst_rsv, |
| 3368 | u64 num_bytes); |
Josef Bacik | d52be81 | 2013-05-29 14:54:47 -0400 | [diff] [blame] | 3369 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
| 3370 | struct btrfs_block_rsv *dest, u64 num_bytes, |
| 3371 | int min_factor); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 3372 | void btrfs_block_rsv_release(struct btrfs_root *root, |
| 3373 | struct btrfs_block_rsv *block_rsv, |
| 3374 | u64 num_bytes); |
| 3375 | int btrfs_set_block_group_ro(struct btrfs_root *root, |
| 3376 | struct btrfs_block_group_cache *cache); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3377 | void btrfs_set_block_group_rw(struct btrfs_root *root, |
| 3378 | struct btrfs_block_group_cache *cache); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 3379 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
Miao Xie | 6d07bce | 2011-01-05 10:07:31 +0000 | [diff] [blame] | 3380 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3381 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
| 3382 | u64 start, u64 end); |
| 3383 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, |
Li Dongyang | 5378e60 | 2011-03-24 10:24:27 +0000 | [diff] [blame] | 3384 | u64 num_bytes, u64 *actual_bytes); |
Chris Mason | c87f08c | 2011-02-16 13:57:04 -0500 | [diff] [blame] | 3385 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
| 3386 | struct btrfs_root *root, u64 type); |
Li Dongyang | f7039b1 | 2011-03-24 10:24:28 +0000 | [diff] [blame] | 3387 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3388 | |
liubo | c59021f | 2011-03-07 02:13:14 +0000 | [diff] [blame] | 3389 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 3390 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
| 3391 | struct btrfs_fs_info *fs_info); |
Liu Bo | 31e5022 | 2012-11-21 14:18:10 +0000 | [diff] [blame] | 3392 | int __get_raid_index(u64 flags); |
Miao Xie | 8257b2d | 2014-03-06 13:38:19 +0800 | [diff] [blame] | 3393 | |
| 3394 | int btrfs_start_nocow_write(struct btrfs_root *root); |
| 3395 | void btrfs_end_nocow_write(struct btrfs_root *root); |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3396 | /* ctree.c */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3397 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
| 3398 | int level, int *slot); |
| 3399 | 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] | 3400 | int btrfs_previous_item(struct btrfs_root *root, |
| 3401 | struct btrfs_path *path, u64 min_objectid, |
| 3402 | int type); |
Wang Shilong | ade2e0b | 2014-01-12 21:38:33 +0800 | [diff] [blame] | 3403 | int btrfs_previous_extent_item(struct btrfs_root *root, |
| 3404 | struct btrfs_path *path, u64 min_objectid); |
Tsutomu Itoh | afe5fea | 2013-04-16 05:18:22 +0000 | [diff] [blame] | 3405 | void btrfs_set_item_key_safe(struct btrfs_root *root, struct btrfs_path *path, |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3406 | struct btrfs_key *new_key); |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 3407 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
| 3408 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); |
Chris Mason | e7a8456 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 3409 | 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] | 3410 | struct btrfs_key *key, int lowest_level, |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 3411 | u64 min_trans); |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 3412 | 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] | 3413 | struct btrfs_path *path, |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 3414 | u64 min_trans); |
Alexander Block | 7069830 | 2012-06-05 21:07:48 +0200 | [diff] [blame] | 3415 | enum btrfs_compare_tree_result { |
| 3416 | BTRFS_COMPARE_TREE_NEW, |
| 3417 | BTRFS_COMPARE_TREE_DELETED, |
| 3418 | BTRFS_COMPARE_TREE_CHANGED, |
Josef Bacik | ba5e8f2 | 2013-08-16 16:52:55 -0400 | [diff] [blame] | 3419 | BTRFS_COMPARE_TREE_SAME, |
Alexander Block | 7069830 | 2012-06-05 21:07:48 +0200 | [diff] [blame] | 3420 | }; |
| 3421 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, |
| 3422 | struct btrfs_root *right_root, |
| 3423 | struct btrfs_path *left_path, |
| 3424 | struct btrfs_path *right_path, |
| 3425 | struct btrfs_key *key, |
| 3426 | enum btrfs_compare_tree_result result, |
| 3427 | void *ctx); |
| 3428 | int btrfs_compare_trees(struct btrfs_root *left_root, |
| 3429 | struct btrfs_root *right_root, |
| 3430 | btrfs_changed_cb_t cb, void *ctx); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3431 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
| 3432 | struct btrfs_root *root, struct extent_buffer *buf, |
| 3433 | struct extent_buffer *parent, int parent_slot, |
Chris Mason | 9fa8cfe | 2009-03-13 10:24:59 -0400 | [diff] [blame] | 3434 | struct extent_buffer **cow_ret); |
Chris Mason | be20aa9 | 2007-12-17 20:14:01 -0500 | [diff] [blame] | 3435 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
| 3436 | struct btrfs_root *root, |
| 3437 | struct extent_buffer *buf, |
| 3438 | struct extent_buffer **cow_ret, u64 new_root_objectid); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3439 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
| 3440 | struct extent_buffer *buf); |
Tsutomu Itoh | 4b90c68 | 2013-04-16 05:18:49 +0000 | [diff] [blame] | 3441 | void btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path, |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3442 | u32 data_size); |
Tsutomu Itoh | afe5fea | 2013-04-16 05:18:22 +0000 | [diff] [blame] | 3443 | void btrfs_truncate_item(struct btrfs_root *root, struct btrfs_path *path, |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3444 | u32 new_size, int from_end); |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 3445 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
| 3446 | struct btrfs_root *root, |
| 3447 | struct btrfs_path *path, |
| 3448 | struct btrfs_key *new_key, |
| 3449 | unsigned long split_offset); |
Yan, Zheng | ad48fd75 | 2009-11-12 09:33:58 +0000 | [diff] [blame] | 3450 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
| 3451 | struct btrfs_root *root, |
| 3452 | struct btrfs_path *path, |
| 3453 | struct btrfs_key *new_key); |
Kelley Nielsen | e33d5c3 | 2013-11-04 19:33:33 -0800 | [diff] [blame] | 3454 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
| 3455 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3456 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
| 3457 | *root, struct btrfs_key *key, struct btrfs_path *p, int |
| 3458 | ins_len, int cow); |
Jan Schmidt | 5d9e75c4 | 2012-05-16 18:25:47 +0200 | [diff] [blame] | 3459 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
| 3460 | struct btrfs_path *p, u64 time_seq); |
Arne Jansen | 2f38b3e | 2011-09-13 11:18:10 +0200 | [diff] [blame] | 3461 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
| 3462 | struct btrfs_key *key, struct btrfs_path *p, |
| 3463 | int find_higher, int return_any); |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 3464 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3465 | struct btrfs_root *root, struct extent_buffer *parent, |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 3466 | int start_slot, u64 *last_ret, |
Chris Mason | a6b6e75 | 2007-10-15 16:22:39 -0400 | [diff] [blame] | 3467 | struct btrfs_key *progress); |
David Sterba | b3b4aa7 | 2011-04-21 01:20:15 +0200 | [diff] [blame] | 3468 | void btrfs_release_path(struct btrfs_path *p); |
Chris Mason | 2c90e5d | 2007-04-02 10:50:19 -0400 | [diff] [blame] | 3469 | struct btrfs_path *btrfs_alloc_path(void); |
| 3470 | void btrfs_free_path(struct btrfs_path *p); |
Chris Mason | b4ce94d | 2009-02-04 09:25:08 -0500 | [diff] [blame] | 3471 | void btrfs_set_path_blocking(struct btrfs_path *p); |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3472 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
Chris Mason | bd68151 | 2011-07-16 15:23:14 -0400 | [diff] [blame] | 3473 | struct extent_buffer *held, int held_rw); |
Chris Mason | b4ce94d | 2009-02-04 09:25:08 -0500 | [diff] [blame] | 3474 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
| 3475 | |
Chris Mason | 85e21ba | 2008-01-29 15:11:36 -0500 | [diff] [blame] | 3476 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| 3477 | struct btrfs_path *path, int slot, int nr); |
Chris Mason | 85e21ba | 2008-01-29 15:11:36 -0500 | [diff] [blame] | 3478 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
| 3479 | struct btrfs_root *root, |
| 3480 | struct btrfs_path *path) |
| 3481 | { |
| 3482 | return btrfs_del_items(trans, root, path, path->slots[0], 1); |
| 3483 | } |
| 3484 | |
Tsutomu Itoh | afe5fea | 2013-04-16 05:18:22 +0000 | [diff] [blame] | 3485 | 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] | 3486 | struct btrfs_key *cpu_key, u32 *data_size, |
| 3487 | u32 total_data, u32 total_size, int nr); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3488 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
| 3489 | *root, struct btrfs_key *key, void *data, u32 data_size); |
Chris Mason | 9c58309 | 2008-01-29 15:15:18 -0500 | [diff] [blame] | 3490 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
| 3491 | struct btrfs_root *root, |
| 3492 | struct btrfs_path *path, |
| 3493 | struct btrfs_key *cpu_key, u32 *data_size, int nr); |
| 3494 | |
| 3495 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, |
| 3496 | struct btrfs_root *root, |
| 3497 | struct btrfs_path *path, |
| 3498 | struct btrfs_key *key, |
| 3499 | u32 data_size) |
| 3500 | { |
| 3501 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); |
| 3502 | } |
| 3503 | |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 3504 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
Josef Bacik | 16e7549 | 2013-10-22 12:18:51 -0400 | [diff] [blame] | 3505 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
Jan Schmidt | 3d7806e | 2012-06-11 08:29:29 +0200 | [diff] [blame] | 3506 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
| 3507 | u64 time_seq); |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 3508 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
| 3509 | struct btrfs_path *p, u64 time_seq) |
Jan Schmidt | c7d22a3 | 2011-11-22 15:14:33 +0100 | [diff] [blame] | 3510 | { |
| 3511 | ++p->slots[0]; |
| 3512 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 3513 | return btrfs_next_old_leaf(root, p, time_seq); |
Jan Schmidt | c7d22a3 | 2011-11-22 15:14:33 +0100 | [diff] [blame] | 3514 | return 0; |
| 3515 | } |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 3516 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
| 3517 | { |
| 3518 | return btrfs_next_old_item(root, p, 0); |
| 3519 | } |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3520 | 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] | 3521 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
| 3522 | struct btrfs_block_rsv *block_rsv, |
| 3523 | int update_ref, int for_reloc); |
Yan Zheng | f82d02d | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 3524 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
| 3525 | struct btrfs_root *root, |
| 3526 | struct extent_buffer *node, |
| 3527 | struct extent_buffer *parent); |
David Sterba | 7841cb2 | 2011-05-31 18:07:27 +0200 | [diff] [blame] | 3528 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
| 3529 | { |
| 3530 | /* |
| 3531 | * Get synced with close_ctree() |
| 3532 | */ |
| 3533 | smp_mb(); |
| 3534 | return fs_info->closing; |
| 3535 | } |
Miao Xie | babbf170 | 2013-05-14 10:20:43 +0000 | [diff] [blame] | 3536 | |
| 3537 | /* |
| 3538 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do |
| 3539 | * anything except sleeping. This function is used to check the status of |
| 3540 | * the fs. |
| 3541 | */ |
| 3542 | static inline int btrfs_need_cleaner_sleep(struct btrfs_root *root) |
| 3543 | { |
| 3544 | return (root->fs_info->sb->s_flags & MS_RDONLY || |
| 3545 | btrfs_fs_closing(root->fs_info)); |
| 3546 | } |
| 3547 | |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 3548 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
| 3549 | { |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 3550 | kfree(fs_info->balance_ctl); |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 3551 | kfree(fs_info->delayed_root); |
| 3552 | kfree(fs_info->extent_root); |
| 3553 | kfree(fs_info->tree_root); |
| 3554 | kfree(fs_info->chunk_root); |
| 3555 | kfree(fs_info->dev_root); |
| 3556 | kfree(fs_info->csum_root); |
Arne Jansen | bcef60f | 2011-09-13 15:23:30 +0200 | [diff] [blame] | 3557 | kfree(fs_info->quota_root); |
Filipe David Borba Manana | d8f9803 | 2013-08-24 19:51:06 +0100 | [diff] [blame] | 3558 | kfree(fs_info->uuid_root); |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 3559 | kfree(fs_info->super_copy); |
| 3560 | kfree(fs_info->super_for_commit); |
| 3561 | kfree(fs_info); |
| 3562 | } |
David Sterba | 7841cb2 | 2011-05-31 18:07:27 +0200 | [diff] [blame] | 3563 | |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 3564 | /* tree mod log functions from ctree.c */ |
| 3565 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, |
| 3566 | struct seq_list *elem); |
| 3567 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, |
| 3568 | struct seq_list *elem); |
Jan Schmidt | fc36ed7e | 2013-04-24 16:57:33 +0000 | [diff] [blame] | 3569 | u64 btrfs_tree_mod_seq_prev(u64 seq); |
Jan Schmidt | 5b6602e | 2012-10-23 11:28:27 +0200 | [diff] [blame] | 3570 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 3571 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3572 | /* root-item.c */ |
Chris Mason | ea9e8b1 | 2008-11-17 21:14:24 -0500 | [diff] [blame] | 3573 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3574 | struct btrfs_path *path, |
| 3575 | u64 root_id, u64 ref_id); |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 3576 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
| 3577 | struct btrfs_root *tree_root, |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3578 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
| 3579 | const char *name, int name_len); |
| 3580 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, |
| 3581 | struct btrfs_root *tree_root, |
| 3582 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 3583 | const char *name, int name_len); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3584 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| 3585 | struct btrfs_key *key); |
| 3586 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root |
| 3587 | *root, struct btrfs_key *key, struct btrfs_root_item |
| 3588 | *item); |
Jeff Mahoney | b45a9d8 | 2011-10-03 23:22:44 -0400 | [diff] [blame] | 3589 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
| 3590 | struct btrfs_root *root, |
| 3591 | struct btrfs_key *key, |
| 3592 | struct btrfs_root_item *item); |
Miao Xie | cb517ea | 2013-05-15 07:48:19 +0000 | [diff] [blame] | 3593 | int btrfs_find_root(struct btrfs_root *root, struct btrfs_key *search_key, |
| 3594 | struct btrfs_path *path, struct btrfs_root_item *root_item, |
| 3595 | struct btrfs_key *root_key); |
Yan, Zheng | 76dda93 | 2009-09-21 16:00:26 -0400 | [diff] [blame] | 3596 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
Mark Fasheh | bf5f32e | 2011-07-14 21:23:06 +0000 | [diff] [blame] | 3597 | void btrfs_set_root_node(struct btrfs_root_item *item, |
| 3598 | struct extent_buffer *node); |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 3599 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 3600 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
| 3601 | struct btrfs_root *root); |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 3602 | |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 3603 | /* uuid-tree.c */ |
| 3604 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, |
| 3605 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, |
| 3606 | u64 subid); |
| 3607 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, |
| 3608 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, |
| 3609 | u64 subid); |
Stefan Behrens | 70f8017 | 2013-08-15 17:11:23 +0200 | [diff] [blame] | 3610 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
| 3611 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, |
| 3612 | u64)); |
Stefan Behrens | 07b30a4 | 2013-08-15 17:11:17 +0200 | [diff] [blame] | 3613 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3614 | /* dir-item.c */ |
Chris Mason | 9c52057 | 2012-12-17 14:26:57 -0500 | [diff] [blame] | 3615 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
| 3616 | const char *name, int name_len); |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 3617 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
| 3618 | struct btrfs_root *root, const char *name, |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3619 | int name_len, struct inode *dir, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 3620 | struct btrfs_key *location, u8 type, u64 index); |
Chris Mason | 7e38180 | 2007-04-19 15:36:27 -0400 | [diff] [blame] | 3621 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
| 3622 | struct btrfs_root *root, |
| 3623 | struct btrfs_path *path, u64 dir, |
| 3624 | const char *name, int name_len, |
| 3625 | int mod); |
| 3626 | struct btrfs_dir_item * |
| 3627 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, |
| 3628 | struct btrfs_root *root, |
| 3629 | struct btrfs_path *path, u64 dir, |
| 3630 | u64 objectid, const char *name, int name_len, |
| 3631 | int mod); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3632 | struct btrfs_dir_item * |
| 3633 | btrfs_search_dir_index_item(struct btrfs_root *root, |
| 3634 | struct btrfs_path *path, u64 dirid, |
| 3635 | const char *name, int name_len); |
Chris Mason | 7e38180 | 2007-04-19 15:36:27 -0400 | [diff] [blame] | 3636 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
| 3637 | struct btrfs_root *root, |
| 3638 | struct btrfs_path *path, |
| 3639 | struct btrfs_dir_item *di); |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 3640 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
Yan, Zheng | f34f57a | 2009-11-12 09:35:27 +0000 | [diff] [blame] | 3641 | struct btrfs_root *root, |
| 3642 | struct btrfs_path *path, u64 objectid, |
| 3643 | const char *name, u16 name_len, |
| 3644 | const void *data, u16 data_len); |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 3645 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
| 3646 | struct btrfs_root *root, |
| 3647 | struct btrfs_path *path, u64 dir, |
| 3648 | const char *name, u16 name_len, |
| 3649 | int mod); |
Josef Bacik | 22a94d4 | 2011-03-16 16:47:17 -0400 | [diff] [blame] | 3650 | int verify_dir_item(struct btrfs_root *root, |
| 3651 | struct extent_buffer *leaf, |
| 3652 | struct btrfs_dir_item *dir_item); |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 3653 | |
| 3654 | /* orphan.c */ |
| 3655 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, |
| 3656 | struct btrfs_root *root, u64 offset); |
| 3657 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, |
| 3658 | struct btrfs_root *root, u64 offset); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3659 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 3660 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3661 | /* inode-item.c */ |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 3662 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
| 3663 | struct btrfs_root *root, |
| 3664 | const char *name, int name_len, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 3665 | u64 inode_objectid, u64 ref_objectid, u64 index); |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 3666 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
| 3667 | struct btrfs_root *root, |
| 3668 | const char *name, int name_len, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 3669 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3670 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
| 3671 | struct btrfs_root *root, |
| 3672 | struct btrfs_path *path, u64 objectid); |
Chris Mason | 293ffd5 | 2007-03-20 15:57:25 -0400 | [diff] [blame] | 3673 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 3674 | *root, struct btrfs_path *path, |
| 3675 | struct btrfs_key *location, int mod); |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3676 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 3677 | struct btrfs_inode_extref * |
| 3678 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, |
| 3679 | struct btrfs_root *root, |
| 3680 | struct btrfs_path *path, |
| 3681 | const char *name, int name_len, |
| 3682 | u64 inode_objectid, u64 ref_objectid, int ins_len, |
| 3683 | int cow); |
| 3684 | |
| 3685 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, |
| 3686 | u64 ref_objectid, const char *name, |
| 3687 | int name_len, |
| 3688 | struct btrfs_inode_extref **extref_ret); |
| 3689 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3690 | /* file-item.c */ |
Miao Xie | facc8a22 | 2013-07-25 19:22:34 +0800 | [diff] [blame] | 3691 | struct btrfs_dio_private; |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 3692 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
| 3693 | struct btrfs_root *root, u64 bytenr, u64 len); |
Chris Mason | 61b4944 | 2008-07-31 15:42:53 -0400 | [diff] [blame] | 3694 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 3695 | struct bio *bio, u32 *dst); |
Josef Bacik | 4b46fce | 2010-05-23 11:00:55 -0400 | [diff] [blame] | 3696 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
Miao Xie | facc8a22 | 2013-07-25 19:22:34 +0800 | [diff] [blame] | 3697 | struct btrfs_dio_private *dip, struct bio *bio, |
| 3698 | u64 logical_offset); |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 3699 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 3700 | struct btrfs_root *root, |
| 3701 | u64 objectid, u64 pos, |
| 3702 | u64 disk_offset, u64 disk_num_bytes, |
| 3703 | u64 num_bytes, u64 offset, u64 ram_bytes, |
| 3704 | u8 compression, u8 encryption, u16 other_encoding); |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3705 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
| 3706 | struct btrfs_root *root, |
| 3707 | struct btrfs_path *path, u64 objectid, |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3708 | u64 bytenr, int mod); |
Chris Mason | 065631f | 2008-02-20 12:07:25 -0500 | [diff] [blame] | 3709 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 3710 | struct btrfs_root *root, |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 3711 | struct btrfs_ordered_sum *sums); |
Chris Mason | 3edf7d3 | 2008-07-18 06:17:13 -0400 | [diff] [blame] | 3712 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 3713 | struct bio *bio, u64 file_start, int contig); |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 3714 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
| 3715 | struct list_head *list, int search_commit); |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3716 | /* inode.c */ |
Miao Xie | 8ccf6f19 | 2012-10-25 09:28:04 +0000 | [diff] [blame] | 3717 | struct btrfs_delalloc_work { |
| 3718 | struct inode *inode; |
| 3719 | int wait; |
| 3720 | int delay_iput; |
| 3721 | struct completion completion; |
| 3722 | struct list_head list; |
| 3723 | struct btrfs_work work; |
| 3724 | }; |
| 3725 | |
| 3726 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, |
| 3727 | int wait, int delay_iput); |
| 3728 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); |
| 3729 | |
Josef Bacik | b267515 | 2011-07-18 13:21:36 -0400 | [diff] [blame] | 3730 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
| 3731 | size_t pg_offset, u64 start, u64 len, |
| 3732 | int create); |
Josef Bacik | 0036158 | 2013-08-14 14:02:47 -0400 | [diff] [blame] | 3733 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
Josef Bacik | 7ee9e44 | 2013-06-21 16:37:03 -0400 | [diff] [blame] | 3734 | u64 *orig_start, u64 *orig_block_len, |
| 3735 | u64 *ram_bytes); |
Chris Mason | 4881ee5 | 2008-07-24 09:51:08 -0400 | [diff] [blame] | 3736 | |
| 3737 | /* 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] | 3738 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
Chris Mason | 4881ee5 | 2008-07-24 09:51:08 -0400 | [diff] [blame] | 3739 | #define ClearPageChecked ClearPageFsMisc |
| 3740 | #define SetPageChecked SetPageFsMisc |
| 3741 | #define PageChecked PageFsMisc |
| 3742 | #endif |
| 3743 | |
Li Zefan | b6973aa | 2011-07-20 03:46:35 +0000 | [diff] [blame] | 3744 | /* This forces readahead on a given range of bytes in an inode */ |
| 3745 | static inline void btrfs_force_ra(struct address_space *mapping, |
| 3746 | struct file_ra_state *ra, struct file *file, |
| 3747 | pgoff_t offset, unsigned long req_size) |
| 3748 | { |
| 3749 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); |
| 3750 | } |
| 3751 | |
Chris Mason | 3de4586 | 2008-11-17 21:02:50 -0500 | [diff] [blame] | 3752 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
| 3753 | int btrfs_set_inode_index(struct inode *dir, u64 *index); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3754 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
| 3755 | struct btrfs_root *root, |
| 3756 | struct inode *dir, struct inode *inode, |
| 3757 | const char *name, int name_len); |
| 3758 | int btrfs_add_link(struct btrfs_trans_handle *trans, |
| 3759 | struct inode *parent_inode, struct inode *inode, |
| 3760 | const char *name, int name_len, int add_backref, u64 index); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3761 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
| 3762 | struct btrfs_root *root, |
| 3763 | struct inode *dir, u64 objectid, |
| 3764 | const char *name, int name_len); |
Josef Bacik | 2aaa665 | 2012-08-29 14:27:18 -0400 | [diff] [blame] | 3765 | int btrfs_truncate_page(struct inode *inode, loff_t from, loff_t len, |
| 3766 | int front); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3767 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
| 3768 | struct btrfs_root *root, |
| 3769 | struct inode *inode, u64 new_size, |
| 3770 | u32 min_type); |
| 3771 | |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 3772 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
Miao Xie | 6c255e6 | 2014-03-06 13:55:01 +0800 | [diff] [blame] | 3773 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
| 3774 | int nr); |
Josef Bacik | 2ac55d4 | 2010-02-03 19:33:23 +0000 | [diff] [blame] | 3775 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
| 3776 | struct extent_state **cached_state); |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 3777 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
Filipe David Borba Manana | 6354192 | 2014-01-07 11:47:46 +0000 | [diff] [blame] | 3778 | struct btrfs_root *new_root, |
| 3779 | struct btrfs_root *parent_root, |
| 3780 | u64 new_dirid); |
David Woodhouse | 64a1670 | 2009-07-15 23:29:37 +0100 | [diff] [blame] | 3781 | int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, |
| 3782 | size_t size, struct bio *bio, |
| 3783 | unsigned long bio_flags); |
Nick Piggin | c2ec175 | 2009-03-31 15:23:21 -0700 | [diff] [blame] | 3784 | 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] | 3785 | int btrfs_readpage(struct file *file, struct page *page); |
Al Viro | bd55597 | 2010-06-07 11:35:40 -0400 | [diff] [blame] | 3786 | void btrfs_evict_inode(struct inode *inode); |
Christoph Hellwig | a9185b4 | 2010-03-05 09:21:37 +0100 | [diff] [blame] | 3787 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3788 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
| 3789 | void btrfs_destroy_inode(struct inode *inode); |
Al Viro | 45321ac | 2010-06-07 13:43:19 -0400 | [diff] [blame] | 3790 | int btrfs_drop_inode(struct inode *inode); |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3791 | int btrfs_init_cachep(void); |
| 3792 | void btrfs_destroy_cachep(void); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3793 | long btrfs_ioctl_trans_end(struct file *file); |
Balaji Rao | 1a54ef8 | 2008-07-21 02:01:04 +0530 | [diff] [blame] | 3794 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
Josef Bacik | 73f7341 | 2009-12-04 17:38:27 +0000 | [diff] [blame] | 3795 | struct btrfs_root *root, int *was_new); |
Chris Mason | a52d9a8 | 2007-08-27 16:49:44 -0400 | [diff] [blame] | 3796 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
David Sterba | 306e16c | 2011-04-19 14:29:38 +0200 | [diff] [blame] | 3797 | size_t pg_offset, u64 start, u64 end, |
Chris Mason | a52d9a8 | 2007-08-27 16:49:44 -0400 | [diff] [blame] | 3798 | int create); |
| 3799 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
| 3800 | struct btrfs_root *root, |
| 3801 | struct inode *inode); |
Josef Bacik | be6aef6 | 2012-10-22 15:43:12 -0400 | [diff] [blame] | 3802 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
| 3803 | struct btrfs_root *root, struct inode *inode); |
Zheng Yan | 5b21f2e | 2008-09-26 10:05:38 -0400 | [diff] [blame] | 3804 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
Josef Bacik | 66b4ffd | 2011-01-31 16:22:42 -0500 | [diff] [blame] | 3805 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 3806 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
| 3807 | struct btrfs_root *root); |
Josef Bacik | a41ad39 | 2011-01-31 15:30:16 -0500 | [diff] [blame] | 3808 | 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] | 3809 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 3810 | void btrfs_add_delayed_iput(struct inode *inode); |
| 3811 | void btrfs_run_delayed_iputs(struct btrfs_root *root); |
Yan, Zheng | efa5646 | 2010-05-16 10:49:59 -0400 | [diff] [blame] | 3812 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
| 3813 | u64 start, u64 num_bytes, u64 min_size, |
| 3814 | loff_t actual_len, u64 *alloc_hint); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 3815 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
| 3816 | struct btrfs_trans_handle *trans, int mode, |
| 3817 | u64 start, u64 num_bytes, u64 min_size, |
| 3818 | loff_t actual_len, u64 *alloc_hint); |
Alexey Dobriyan | 82d339d | 2009-10-09 09:54:36 -0400 | [diff] [blame] | 3819 | extern const struct dentry_operations btrfs_dentry_operations; |
Christoph Hellwig | f46b5a6 | 2008-06-11 21:53:53 -0400 | [diff] [blame] | 3820 | |
| 3821 | /* ioctl.c */ |
| 3822 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 3823 | void btrfs_update_iflags(struct inode *inode); |
| 3824 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); |
Stefan Behrens | dd5f961 | 2013-08-15 17:11:20 +0200 | [diff] [blame] | 3825 | int btrfs_is_empty_uuid(u8 *uuid); |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 3826 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
| 3827 | struct btrfs_ioctl_defrag_range_args *range, |
| 3828 | u64 newer_than, unsigned long max_pages); |
Stefan Behrens | 5af3e8c | 2012-08-01 18:56:49 +0200 | [diff] [blame] | 3829 | void btrfs_get_block_group_info(struct list_head *groups_list, |
| 3830 | struct btrfs_ioctl_space_info *space); |
Stefan Behrens | 35a3621 | 2013-08-14 18:12:25 +0200 | [diff] [blame] | 3831 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
| 3832 | struct btrfs_ioctl_balance_args *bargs); |
| 3833 | |
Stefan Behrens | 5af3e8c | 2012-08-01 18:56:49 +0200 | [diff] [blame] | 3834 | |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3835 | /* file.c */ |
Miao Xie | 9247f31 | 2012-11-26 09:24:43 +0000 | [diff] [blame] | 3836 | int btrfs_auto_defrag_init(void); |
| 3837 | void btrfs_auto_defrag_exit(void); |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 3838 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
| 3839 | struct inode *inode); |
| 3840 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
Miao Xie | 26176e7 | 2012-11-26 09:26:20 +0000 | [diff] [blame] | 3841 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
Josef Bacik | 02c24a8 | 2011-07-16 20:44:56 -0400 | [diff] [blame] | 3842 | 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] | 3843 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
| 3844 | int skip_pinned); |
Alexey Dobriyan | 828c095 | 2009-10-01 15:43:56 -0700 | [diff] [blame] | 3845 | extern const struct file_operations btrfs_file_operations; |
Josef Bacik | 5dc562c | 2012-08-17 13:14:17 -0400 | [diff] [blame] | 3846 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
| 3847 | struct btrfs_root *root, struct inode *inode, |
| 3848 | struct btrfs_path *path, u64 start, u64 end, |
Filipe David Borba Manana | 1acae57 | 2014-01-07 11:42:27 +0000 | [diff] [blame] | 3849 | u64 *drop_end, int drop_cache, |
| 3850 | int replace_extent, |
| 3851 | u32 extent_item_size, |
| 3852 | int *key_inserted); |
Josef Bacik | 5dc562c | 2012-08-17 13:14:17 -0400 | [diff] [blame] | 3853 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
| 3854 | struct btrfs_root *root, struct inode *inode, u64 start, |
Josef Bacik | 2671485 | 2012-08-29 12:24:27 -0400 | [diff] [blame] | 3855 | u64 end, int drop_cache); |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 3856 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 3857 | struct inode *inode, u64 start, u64 end); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3858 | int btrfs_release_file(struct inode *inode, struct file *file); |
Josef Bacik | be1a12a | 2011-04-06 13:05:22 -0400 | [diff] [blame] | 3859 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, |
| 3860 | struct page **pages, size_t num_pages, |
| 3861 | loff_t pos, size_t write_bytes, |
| 3862 | struct extent_state **cached); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3863 | |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 3864 | /* tree-defrag.c */ |
| 3865 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 3866 | struct btrfs_root *root); |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 3867 | |
| 3868 | /* sysfs.c */ |
| 3869 | int btrfs_init_sysfs(void); |
| 3870 | void btrfs_exit_sysfs(void); |
Jeff Mahoney | 5ac1d20 | 2013-11-01 13:06:58 -0400 | [diff] [blame] | 3871 | int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info); |
| 3872 | void btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info); |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 3873 | |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 3874 | /* xattr.c */ |
| 3875 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
Josef Bacik | 6099afe | 2008-07-24 12:16:03 -0400 | [diff] [blame] | 3876 | |
Chris Mason | edbd8d4 | 2007-12-21 16:27:24 -0500 | [diff] [blame] | 3877 | /* super.c */ |
Christoph Hellwig | edf24ab | 2008-06-10 10:40:29 -0400 | [diff] [blame] | 3878 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3879 | int btrfs_sync_fs(struct super_block *sb, int wait); |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3880 | |
| 3881 | #ifdef CONFIG_PRINTK |
| 3882 | __printf(2, 3) |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 3883 | 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] | 3884 | #else |
| 3885 | static inline __printf(2, 3) |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 3886 | 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] | 3887 | { |
| 3888 | } |
| 3889 | #endif |
| 3890 | |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 3891 | #define btrfs_emerg(fs_info, fmt, args...) \ |
| 3892 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) |
| 3893 | #define btrfs_alert(fs_info, fmt, args...) \ |
| 3894 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) |
| 3895 | #define btrfs_crit(fs_info, fmt, args...) \ |
| 3896 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) |
| 3897 | #define btrfs_err(fs_info, fmt, args...) \ |
| 3898 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) |
| 3899 | #define btrfs_warn(fs_info, fmt, args...) \ |
| 3900 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) |
| 3901 | #define btrfs_notice(fs_info, fmt, args...) \ |
| 3902 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) |
| 3903 | #define btrfs_info(fs_info, fmt, args...) \ |
| 3904 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) |
Frank Holton | 27a0dd6 | 2013-11-12 19:22:53 -0500 | [diff] [blame] | 3905 | |
| 3906 | #ifdef DEBUG |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 3907 | #define btrfs_debug(fs_info, fmt, args...) \ |
| 3908 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) |
Frank Holton | 27a0dd6 | 2013-11-12 19:22:53 -0500 | [diff] [blame] | 3909 | #else |
| 3910 | #define btrfs_debug(fs_info, fmt, args...) \ |
| 3911 | no_printk(KERN_DEBUG fmt, ##args) |
| 3912 | #endif |
Simon Kirby | c2cf52e | 2013-03-19 22:41:23 +0000 | [diff] [blame] | 3913 | |
Josef Bacik | 2e17c7c | 2013-08-26 16:53:15 -0400 | [diff] [blame] | 3914 | #ifdef CONFIG_BTRFS_ASSERT |
| 3915 | |
| 3916 | static inline void assfail(char *expr, char *file, int line) |
| 3917 | { |
Frank Holton | efe120a | 2013-12-20 11:37:06 -0500 | [diff] [blame] | 3918 | pr_err("BTRFS: assertion failed: %s, file: %s, line: %d", |
Josef Bacik | 2e17c7c | 2013-08-26 16:53:15 -0400 | [diff] [blame] | 3919 | expr, file, line); |
| 3920 | BUG(); |
| 3921 | } |
| 3922 | |
| 3923 | #define ASSERT(expr) \ |
| 3924 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) |
| 3925 | #else |
| 3926 | #define ASSERT(expr) ((void)0) |
| 3927 | #endif |
| 3928 | |
| 3929 | #define btrfs_assert() |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3930 | __printf(5, 6) |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3931 | 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] | 3932 | unsigned int line, int errno, const char *fmt, ...); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3933 | |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3934 | |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 3935 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
| 3936 | struct btrfs_root *root, const char *function, |
| 3937 | unsigned int line, int errno); |
| 3938 | |
Mitch Harder | 2b0ce2c | 2012-07-24 11:58:43 -0600 | [diff] [blame] | 3939 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
| 3940 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) |
| 3941 | |
| 3942 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, |
| 3943 | u64 flag) |
| 3944 | { |
| 3945 | struct btrfs_super_block *disk_super; |
| 3946 | u64 features; |
| 3947 | |
| 3948 | disk_super = fs_info->super_copy; |
| 3949 | features = btrfs_super_incompat_flags(disk_super); |
| 3950 | if (!(features & flag)) { |
Miao Xie | ceda086 | 2013-04-11 10:30:16 +0000 | [diff] [blame] | 3951 | spin_lock(&fs_info->super_lock); |
| 3952 | features = btrfs_super_incompat_flags(disk_super); |
| 3953 | if (!(features & flag)) { |
| 3954 | features |= flag; |
| 3955 | btrfs_set_super_incompat_flags(disk_super, features); |
Frank Holton | efe120a | 2013-12-20 11:37:06 -0500 | [diff] [blame] | 3956 | btrfs_info(fs_info, "setting %llu feature flag", |
Miao Xie | ceda086 | 2013-04-11 10:30:16 +0000 | [diff] [blame] | 3957 | flag); |
| 3958 | } |
| 3959 | spin_unlock(&fs_info->super_lock); |
Mitch Harder | 2b0ce2c | 2012-07-24 11:58:43 -0600 | [diff] [blame] | 3960 | } |
| 3961 | } |
| 3962 | |
Josef Bacik | 3173a18 | 2013-03-07 14:22:04 -0500 | [diff] [blame] | 3963 | #define btrfs_fs_incompat(fs_info, opt) \ |
| 3964 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) |
| 3965 | |
| 3966 | static inline int __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
| 3967 | { |
| 3968 | struct btrfs_super_block *disk_super; |
| 3969 | disk_super = fs_info->super_copy; |
| 3970 | return !!(btrfs_super_incompat_flags(disk_super) & flag); |
| 3971 | } |
| 3972 | |
David Sterba | 005d642 | 2012-09-18 07:52:32 -0600 | [diff] [blame] | 3973 | /* |
| 3974 | * Call btrfs_abort_transaction as early as possible when an error condition is |
| 3975 | * detected, that way the exact line number is reported. |
| 3976 | */ |
| 3977 | |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 3978 | #define btrfs_abort_transaction(trans, root, errno) \ |
| 3979 | do { \ |
| 3980 | __btrfs_abort_transaction(trans, root, __func__, \ |
| 3981 | __LINE__, errno); \ |
| 3982 | } while (0) |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3983 | |
| 3984 | #define btrfs_std_error(fs_info, errno) \ |
| 3985 | do { \ |
| 3986 | if ((errno)) \ |
Jeff Mahoney | 4da3511 | 2012-03-01 14:57:30 +0100 | [diff] [blame] | 3987 | __btrfs_std_error((fs_info), __func__, \ |
| 3988 | __LINE__, (errno), NULL); \ |
| 3989 | } while (0) |
| 3990 | |
| 3991 | #define btrfs_error(fs_info, errno, fmt, args...) \ |
| 3992 | do { \ |
| 3993 | __btrfs_std_error((fs_info), __func__, __LINE__, \ |
| 3994 | (errno), fmt, ##args); \ |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3995 | } while (0) |
Josef Bacik | 33268ea | 2008-07-24 12:16:36 -0400 | [diff] [blame] | 3996 | |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3997 | __printf(5, 6) |
Jeff Mahoney | 8c34293 | 2011-10-03 23:22:31 -0400 | [diff] [blame] | 3998 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, |
| 3999 | unsigned int line, int errno, const char *fmt, ...); |
| 4000 | |
Eric Sandeen | aa43a17 | 2013-01-31 00:54:55 +0000 | [diff] [blame] | 4001 | /* |
| 4002 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic |
| 4003 | * will panic(). Otherwise we BUG() here. |
| 4004 | */ |
Jeff Mahoney | 8c34293 | 2011-10-03 23:22:31 -0400 | [diff] [blame] | 4005 | #define btrfs_panic(fs_info, errno, fmt, args...) \ |
| 4006 | do { \ |
Eric Sandeen | aa43a17 | 2013-01-31 00:54:55 +0000 | [diff] [blame] | 4007 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ |
| 4008 | BUG(); \ |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 4009 | } while (0) |
| 4010 | |
| 4011 | /* acl.c */ |
| 4012 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
Christoph Hellwig | 4e34e71 | 2011-07-23 17:37:31 +0200 | [diff] [blame] | 4013 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
Christoph Hellwig | 996a710 | 2013-12-20 05:16:43 -0800 | [diff] [blame] | 4014 | 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] | 4015 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
| 4016 | struct inode *inode, struct inode *dir); |
Li Zefan | 9b89d95 | 2011-07-14 03:17:39 +0000 | [diff] [blame] | 4017 | #else |
Linus Torvalds | ed8f373 | 2011-08-02 21:14:05 -1000 | [diff] [blame] | 4018 | #define btrfs_get_acl NULL |
Christoph Hellwig | 996a710 | 2013-12-20 05:16:43 -0800 | [diff] [blame] | 4019 | #define btrfs_set_acl NULL |
Li Zefan | 9b89d95 | 2011-07-14 03:17:39 +0000 | [diff] [blame] | 4020 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
| 4021 | struct inode *inode, struct inode *dir) |
| 4022 | { |
| 4023 | return 0; |
| 4024 | } |
Li Zefan | 9b89d95 | 2011-07-14 03:17:39 +0000 | [diff] [blame] | 4025 | #endif |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 4026 | |
| 4027 | /* relocation.c */ |
| 4028 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); |
| 4029 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
| 4030 | struct btrfs_root *root); |
| 4031 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, |
| 4032 | struct btrfs_root *root); |
| 4033 | int btrfs_recover_relocation(struct btrfs_root *root); |
| 4034 | 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] | 4035 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
| 4036 | struct btrfs_root *root, struct extent_buffer *buf, |
| 4037 | struct extent_buffer *cow); |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 4038 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, |
| 4039 | struct btrfs_pending_snapshot *pending, |
| 4040 | u64 *bytes_to_reserve); |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 4041 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 4042 | struct btrfs_pending_snapshot *pending); |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 4043 | |
| 4044 | /* scrub.c */ |
Stefan Behrens | aa1b8cd | 2012-11-05 17:03:39 +0100 | [diff] [blame] | 4045 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
| 4046 | u64 end, struct btrfs_scrub_progress *progress, |
Stefan Behrens | 63a212a | 2012-11-05 18:29:28 +0100 | [diff] [blame] | 4047 | int readonly, int is_dev_replace); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 4048 | void btrfs_scrub_pause(struct btrfs_root *root); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 4049 | void btrfs_scrub_continue(struct btrfs_root *root); |
Stefan Behrens | aa1b8cd | 2012-11-05 17:03:39 +0100 | [diff] [blame] | 4050 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
| 4051 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, |
| 4052 | struct btrfs_device *dev); |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 4053 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, |
| 4054 | struct btrfs_scrub_progress *progress); |
| 4055 | |
Miao Xie | c404e0d | 2014-01-30 16:46:55 +0800 | [diff] [blame] | 4056 | /* dev-replace.c */ |
| 4057 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); |
| 4058 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); |
| 4059 | void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info); |
| 4060 | |
Arne Jansen | 7414a03 | 2011-05-23 14:33:49 +0200 | [diff] [blame] | 4061 | /* reada.c */ |
| 4062 | struct reada_control { |
| 4063 | struct btrfs_root *root; /* tree to prefetch */ |
| 4064 | struct btrfs_key key_start; |
| 4065 | struct btrfs_key key_end; /* exclusive */ |
| 4066 | atomic_t elems; |
| 4067 | struct kref refcnt; |
| 4068 | wait_queue_head_t wait; |
| 4069 | }; |
| 4070 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, |
| 4071 | struct btrfs_key *start, struct btrfs_key *end); |
| 4072 | int btrfs_reada_wait(void *handle); |
| 4073 | void btrfs_reada_detach(void *handle); |
| 4074 | int btree_readahead_hook(struct btrfs_root *root, struct extent_buffer *eb, |
| 4075 | u64 start, int err); |
| 4076 | |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 4077 | /* qgroup.c */ |
| 4078 | struct qgroup_update { |
Jan Schmidt | 64947ec | 2012-05-16 16:57:09 +0200 | [diff] [blame] | 4079 | struct list_head list; |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 4080 | struct btrfs_delayed_ref_node *node; |
| 4081 | struct btrfs_delayed_extent_op *extent_op; |
Jan Schmidt | 64947ec | 2012-05-16 16:57:09 +0200 | [diff] [blame] | 4082 | }; |
| 4083 | |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 4084 | int btrfs_quota_enable(struct btrfs_trans_handle *trans, |
| 4085 | struct btrfs_fs_info *fs_info); |
| 4086 | int btrfs_quota_disable(struct btrfs_trans_handle *trans, |
| 4087 | struct btrfs_fs_info *fs_info); |
Jan Schmidt | 2f23203 | 2013-04-25 16:04:51 +0000 | [diff] [blame] | 4088 | int btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info); |
Jan Schmidt | b382a32 | 2013-05-28 15:47:24 +0000 | [diff] [blame] | 4089 | void btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info); |
Jan Schmidt | 57254b6e | 2013-05-06 19:14:17 +0000 | [diff] [blame] | 4090 | int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info); |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 4091 | int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, |
| 4092 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); |
| 4093 | int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans, |
| 4094 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); |
| 4095 | int btrfs_create_qgroup(struct btrfs_trans_handle *trans, |
| 4096 | struct btrfs_fs_info *fs_info, u64 qgroupid, |
| 4097 | char *name); |
| 4098 | int btrfs_remove_qgroup(struct btrfs_trans_handle *trans, |
| 4099 | struct btrfs_fs_info *fs_info, u64 qgroupid); |
| 4100 | int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, |
| 4101 | struct btrfs_fs_info *fs_info, u64 qgroupid, |
| 4102 | struct btrfs_qgroup_limit *limit); |
| 4103 | int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info); |
| 4104 | void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info); |
| 4105 | struct btrfs_delayed_extent_op; |
| 4106 | int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans, |
| 4107 | struct btrfs_delayed_ref_node *node, |
| 4108 | struct btrfs_delayed_extent_op *extent_op); |
| 4109 | int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, |
| 4110 | struct btrfs_fs_info *fs_info, |
| 4111 | struct btrfs_delayed_ref_node *node, |
| 4112 | struct btrfs_delayed_extent_op *extent_op); |
| 4113 | int btrfs_run_qgroups(struct btrfs_trans_handle *trans, |
| 4114 | struct btrfs_fs_info *fs_info); |
| 4115 | int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, |
| 4116 | struct btrfs_fs_info *fs_info, u64 srcid, u64 objectid, |
| 4117 | struct btrfs_qgroup_inherit *inherit); |
| 4118 | int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes); |
| 4119 | void btrfs_qgroup_free(struct btrfs_root *root, u64 num_bytes); |
| 4120 | |
| 4121 | void assert_qgroups_uptodate(struct btrfs_trans_handle *trans); |
Jan Schmidt | bd989ba | 2012-05-16 17:18:50 +0200 | [diff] [blame] | 4122 | |
Jan Schmidt | 95a0607 | 2012-05-29 17:06:54 +0200 | [diff] [blame] | 4123 | static inline int is_fstree(u64 rootid) |
| 4124 | { |
| 4125 | if (rootid == BTRFS_FS_TREE_OBJECTID || |
| 4126 | (s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID) |
| 4127 | return 1; |
| 4128 | return 0; |
| 4129 | } |
David Sterba | 210549e | 2013-02-09 23:38:06 +0000 | [diff] [blame] | 4130 | |
| 4131 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) |
| 4132 | { |
| 4133 | return signal_pending(current); |
| 4134 | } |
| 4135 | |
Josef Bacik | aaedb55 | 2013-10-11 14:44:09 -0400 | [diff] [blame] | 4136 | /* Sanity test specific functions */ |
| 4137 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
| 4138 | void btrfs_test_destroy_inode(struct inode *inode); |
| 4139 | #endif |
David Sterba | 210549e | 2013-02-09 23:38:06 +0000 | [diff] [blame] | 4140 | |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 4141 | #endif |