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> |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 26 | #include <linux/completion.h> |
Chris Mason | 0416008 | 2008-03-26 10:28:07 -0400 | [diff] [blame] | 27 | #include <linux/backing-dev.h> |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 28 | #include <linux/wait.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 29 | #include <linux/slab.h> |
Stefan Schmidt | f8b1808 | 2011-01-12 10:30:42 +0100 | [diff] [blame] | 30 | #include <linux/kobject.h> |
liubo | 1abe9b8 | 2011-03-24 11:18:59 +0000 | [diff] [blame] | 31 | #include <trace/events/btrfs.h> |
Chris Mason | 479965d | 2007-10-15 16:14:27 -0400 | [diff] [blame] | 32 | #include <asm/kmap_types.h> |
Josef Bacik | 3b16a4e | 2011-09-21 15:05:58 -0400 | [diff] [blame] | 33 | #include <linux/pagemap.h> |
Chris Mason | d1310b2 | 2008-01-24 16:13:08 -0500 | [diff] [blame] | 34 | #include "extent_io.h" |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 35 | #include "extent_map.h" |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 36 | #include "async-thread.h" |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 37 | #include "ioctl.h" |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 38 | |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 39 | struct btrfs_trans_handle; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 40 | struct btrfs_transaction; |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 41 | struct btrfs_pending_snapshot; |
Chris Mason | 35b7e47 | 2007-05-02 15:53:43 -0400 | [diff] [blame] | 42 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
| 43 | extern struct kmem_cache *btrfs_transaction_cachep; |
| 44 | extern struct kmem_cache *btrfs_bit_radix_cachep; |
Chris Mason | 2c90e5d | 2007-04-02 10:50:19 -0400 | [diff] [blame] | 45 | extern struct kmem_cache *btrfs_path_cachep; |
Josef Bacik | dc89e98 | 2011-01-28 17:05:48 -0500 | [diff] [blame] | 46 | extern struct kmem_cache *btrfs_free_space_cachep; |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 47 | struct btrfs_ordered_sum; |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 48 | |
Chris Mason | 2a7108a | 2008-12-02 09:58:02 -0500 | [diff] [blame] | 49 | #define BTRFS_MAGIC "_BHRfS_M" |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 50 | |
Stefan Behrens | 72d7aef | 2012-11-06 14:57:46 +0100 | [diff] [blame] | 51 | #define BTRFS_MAX_MIRRORS 3 |
Stefan Behrens | 94598ba | 2012-03-27 14:21:26 -0400 | [diff] [blame] | 52 | |
Chris Mason | 4008c04 | 2009-02-12 14:09:45 -0500 | [diff] [blame] | 53 | #define BTRFS_MAX_LEVEL 8 |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 54 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 55 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
| 56 | |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 57 | /* |
| 58 | * files bigger than this get some pre-flushing when they are added |
| 59 | * to the ordered operations list. That way we limit the total |
| 60 | * work done by the commit |
| 61 | */ |
| 62 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) |
| 63 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 64 | /* holds pointers to all of the tree roots */ |
Chris Mason | 6407bf6 | 2007-03-27 06:33:00 -0400 | [diff] [blame] | 65 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 66 | |
| 67 | /* stores information about which extents are in use, and reference counts */ |
Chris Mason | 0cf6c62 | 2007-06-09 09:22:25 -0400 | [diff] [blame] | 68 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 69 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 70 | /* |
| 71 | * chunk tree stores translations from logical -> physical block numbering |
| 72 | * the super block points to the chunk tree |
| 73 | */ |
Chris Mason | e085def | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 74 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 75 | |
| 76 | /* |
| 77 | * stores information about which areas of a given device are in use. |
| 78 | * one per device. The tree of tree roots points to the device tree |
| 79 | */ |
Chris Mason | e085def | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 80 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
| 81 | |
| 82 | /* one per subvolume, storing files and directories */ |
| 83 | #define BTRFS_FS_TREE_OBJECTID 5ULL |
| 84 | |
| 85 | /* directory objectid inside the root tree */ |
| 86 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 87 | |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 88 | /* holds checksums of all the data extents */ |
| 89 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL |
| 90 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 91 | /* for storing balance parameters in the root tree */ |
| 92 | #define BTRFS_BALANCE_OBJECTID -4ULL |
| 93 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 94 | /* holds quota configuration and tracking */ |
| 95 | #define BTRFS_QUOTA_TREE_OBJECTID 8ULL |
| 96 | |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 97 | /* orhpan objectid for tracking unlinked/truncated files */ |
| 98 | #define BTRFS_ORPHAN_OBJECTID -5ULL |
| 99 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 100 | /* does write ahead logging to speed up fsyncs */ |
| 101 | #define BTRFS_TREE_LOG_OBJECTID -6ULL |
| 102 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL |
| 103 | |
Zheng Yan | e465768 | 2008-09-26 10:04:53 -0400 | [diff] [blame] | 104 | /* for space balancing */ |
| 105 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL |
| 106 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL |
| 107 | |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 108 | /* |
| 109 | * extent checksums all have this objectid |
| 110 | * this allows them to share the logging tree |
| 111 | * for fsyncs |
| 112 | */ |
| 113 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL |
| 114 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 115 | /* For storing free space cache */ |
| 116 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL |
| 117 | |
Li Zefan | 82d5902 | 2011-04-20 10:33:24 +0800 | [diff] [blame] | 118 | /* |
Wang Sheng-Hui | 527a136 | 2012-09-06 13:33:37 +0800 | [diff] [blame] | 119 | * The inode number assigned to the special inode for storing |
Li Zefan | 82d5902 | 2011-04-20 10:33:24 +0800 | [diff] [blame] | 120 | * free ino cache |
| 121 | */ |
| 122 | #define BTRFS_FREE_INO_OBJECTID -12ULL |
| 123 | |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 124 | /* dummy objectid represents multiple objectids */ |
| 125 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL |
| 126 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 127 | /* |
Zheng Yan | 6527cdb | 2008-09-05 16:43:53 -0400 | [diff] [blame] | 128 | * All files have objectids in this range. |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 129 | */ |
Chris Mason | f6dbff5 | 2007-12-13 11:13:32 -0500 | [diff] [blame] | 130 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
Zheng Yan | 6527cdb | 2008-09-05 16:43:53 -0400 | [diff] [blame] | 131 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 132 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
Chris Mason | 3768f36 | 2007-03-13 16:47:54 -0400 | [diff] [blame] | 133 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 134 | |
| 135 | /* |
| 136 | * the device items go into the chunk tree. The key is in the form |
| 137 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] |
| 138 | */ |
| 139 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL |
| 140 | |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 141 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
| 142 | |
| 143 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 |
| 144 | |
Stefan Behrens | e93c89c | 2012-11-05 17:33:06 +0100 | [diff] [blame] | 145 | #define BTRFS_DEV_REPLACE_DEVID 0 |
| 146 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 147 | /* |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 148 | * the max metadata block size. This limit is somewhat artificial, |
| 149 | * but the memmove costs go through the roof for larger blocks. |
| 150 | */ |
| 151 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 |
| 152 | |
| 153 | /* |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 154 | * we can actually store much bigger names, but lets not confuse the rest |
| 155 | * of linux |
| 156 | */ |
| 157 | #define BTRFS_NAME_LEN 255 |
| 158 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 159 | /* |
| 160 | * Theoretical limit is larger, but we keep this down to a sane |
| 161 | * value. That should limit greatly the possibility of collisions on |
| 162 | * inode ref items. |
| 163 | */ |
| 164 | #define BTRFS_LINK_MAX 65535U |
| 165 | |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 166 | /* 32 bytes in various csum fields */ |
| 167 | #define BTRFS_CSUM_SIZE 32 |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 168 | |
| 169 | /* csum types */ |
| 170 | #define BTRFS_CSUM_TYPE_CRC32 0 |
| 171 | |
| 172 | static int btrfs_csum_sizes[] = { 4, 0 }; |
| 173 | |
Chris Mason | 509659c | 2007-05-10 12:36:17 -0400 | [diff] [blame] | 174 | /* four bytes for CRC32 */ |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 175 | #define BTRFS_EMPTY_DIR_SIZE 0 |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 176 | |
Stefan Behrens | 29a8d9a | 2012-11-06 14:16:24 +0100 | [diff] [blame] | 177 | /* spefic to btrfs_map_block(), therefore not in include/linux/blk_types.h */ |
| 178 | #define REQ_GET_READ_MIRRORS (1 << 30) |
| 179 | |
Chris Mason | fabb568 | 2007-06-07 22:13:21 -0400 | [diff] [blame] | 180 | #define BTRFS_FT_UNKNOWN 0 |
| 181 | #define BTRFS_FT_REG_FILE 1 |
| 182 | #define BTRFS_FT_DIR 2 |
| 183 | #define BTRFS_FT_CHRDEV 3 |
| 184 | #define BTRFS_FT_BLKDEV 4 |
| 185 | #define BTRFS_FT_FIFO 5 |
| 186 | #define BTRFS_FT_SOCK 6 |
| 187 | #define BTRFS_FT_SYMLINK 7 |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 188 | #define BTRFS_FT_XATTR 8 |
| 189 | #define BTRFS_FT_MAX 9 |
Chris Mason | fabb568 | 2007-06-07 22:13:21 -0400 | [diff] [blame] | 190 | |
Stefan Behrens | 3d136a1 | 2012-02-03 11:20:04 +0100 | [diff] [blame] | 191 | /* ioprio of readahead is set to idle */ |
| 192 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) |
| 193 | |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 194 | /* |
Wu Fengguang | d4a7894 | 2009-04-02 16:46:06 -0400 | [diff] [blame] | 195 | * The key defines the order in the tree, and so it also defines (optimal) |
| 196 | * block layout. |
| 197 | * |
| 198 | * objectid corresponds to the inode number. |
| 199 | * |
| 200 | * type tells us things about the object, and is a kind of stream selector. |
| 201 | * so for a given inode, keys with type of 1 might refer to the inode data, |
| 202 | * type of 2 may point to file data in the btree and type == 3 may point to |
| 203 | * extents. |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 204 | * |
| 205 | * offset is the starting byte offset for this key in the stream. |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 206 | * |
| 207 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always |
| 208 | * in cpu native order. Otherwise they are identical and their sizes |
| 209 | * should be the same (ie both packed) |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 210 | */ |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 211 | struct btrfs_disk_key { |
| 212 | __le64 objectid; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 213 | u8 type; |
Chris Mason | 70b2bef | 2007-04-17 15:39:32 -0400 | [diff] [blame] | 214 | __le64 offset; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 215 | } __attribute__ ((__packed__)); |
| 216 | |
| 217 | struct btrfs_key { |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 218 | u64 objectid; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 219 | u8 type; |
Chris Mason | 70b2bef | 2007-04-17 15:39:32 -0400 | [diff] [blame] | 220 | u64 offset; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 221 | } __attribute__ ((__packed__)); |
| 222 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 223 | struct btrfs_mapping_tree { |
| 224 | struct extent_map_tree map_tree; |
| 225 | }; |
| 226 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 227 | struct btrfs_dev_item { |
| 228 | /* the internal btrfs device id */ |
| 229 | __le64 devid; |
| 230 | |
| 231 | /* size of the device */ |
| 232 | __le64 total_bytes; |
| 233 | |
| 234 | /* bytes used */ |
| 235 | __le64 bytes_used; |
| 236 | |
| 237 | /* optimal io alignment for this device */ |
| 238 | __le32 io_align; |
| 239 | |
| 240 | /* optimal io width for this device */ |
| 241 | __le32 io_width; |
| 242 | |
| 243 | /* minimal io size for this device */ |
| 244 | __le32 sector_size; |
| 245 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 246 | /* type and info about this device */ |
| 247 | __le64 type; |
| 248 | |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 249 | /* expected generation for this device */ |
| 250 | __le64 generation; |
| 251 | |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 252 | /* |
| 253 | * starting byte of this partition on the device, |
Wu Fengguang | d4a7894 | 2009-04-02 16:46:06 -0400 | [diff] [blame] | 254 | * to allow for stripe alignment in the future |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 255 | */ |
| 256 | __le64 start_offset; |
| 257 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 258 | /* grouping information for allocation decisions */ |
| 259 | __le32 dev_group; |
| 260 | |
| 261 | /* seek speed 0-100 where 100 is fastest */ |
| 262 | u8 seek_speed; |
| 263 | |
| 264 | /* bandwidth 0-100 where 100 is fastest */ |
| 265 | u8 bandwidth; |
| 266 | |
Chris Mason | 0d81ba5 | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 267 | /* btrfs generated uuid for this device */ |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 268 | u8 uuid[BTRFS_UUID_SIZE]; |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 269 | |
| 270 | /* uuid of FS who owns this device */ |
| 271 | u8 fsid[BTRFS_UUID_SIZE]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 272 | } __attribute__ ((__packed__)); |
| 273 | |
| 274 | struct btrfs_stripe { |
| 275 | __le64 devid; |
| 276 | __le64 offset; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 277 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 278 | } __attribute__ ((__packed__)); |
| 279 | |
| 280 | struct btrfs_chunk { |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 281 | /* size of this chunk in bytes */ |
| 282 | __le64 length; |
| 283 | |
| 284 | /* objectid of the root referencing this chunk */ |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 285 | __le64 owner; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 286 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 287 | __le64 stripe_len; |
| 288 | __le64 type; |
| 289 | |
| 290 | /* optimal io alignment for this chunk */ |
| 291 | __le32 io_align; |
| 292 | |
| 293 | /* optimal io width for this chunk */ |
| 294 | __le32 io_width; |
| 295 | |
| 296 | /* minimal io size for this chunk */ |
| 297 | __le32 sector_size; |
| 298 | |
| 299 | /* 2^16 stripes is quite a lot, a second limit is the size of a single |
| 300 | * item in the btree |
| 301 | */ |
| 302 | __le16 num_stripes; |
Chris Mason | 321aecc | 2008-04-16 10:49:51 -0400 | [diff] [blame] | 303 | |
| 304 | /* sub stripes only matter for raid10 */ |
| 305 | __le16 sub_stripes; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 306 | struct btrfs_stripe stripe; |
| 307 | /* additional stripes go here */ |
| 308 | } __attribute__ ((__packed__)); |
| 309 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 310 | #define BTRFS_FREE_SPACE_EXTENT 1 |
| 311 | #define BTRFS_FREE_SPACE_BITMAP 2 |
| 312 | |
| 313 | struct btrfs_free_space_entry { |
| 314 | __le64 offset; |
| 315 | __le64 bytes; |
| 316 | u8 type; |
| 317 | } __attribute__ ((__packed__)); |
| 318 | |
| 319 | struct btrfs_free_space_header { |
| 320 | struct btrfs_disk_key location; |
| 321 | __le64 generation; |
| 322 | __le64 num_entries; |
| 323 | __le64 num_bitmaps; |
| 324 | } __attribute__ ((__packed__)); |
| 325 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 326 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
| 327 | { |
| 328 | BUG_ON(num_stripes == 0); |
| 329 | return sizeof(struct btrfs_chunk) + |
| 330 | sizeof(struct btrfs_stripe) * (num_stripes - 1); |
| 331 | } |
| 332 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 333 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
| 334 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 335 | |
| 336 | /* |
| 337 | * File system states |
| 338 | */ |
| 339 | |
| 340 | /* Errors detected */ |
| 341 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) |
| 342 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 343 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
| 344 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) |
| 345 | |
| 346 | #define BTRFS_BACKREF_REV_MAX 256 |
| 347 | #define BTRFS_BACKREF_REV_SHIFT 56 |
| 348 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ |
| 349 | BTRFS_BACKREF_REV_SHIFT) |
| 350 | |
| 351 | #define BTRFS_OLD_BACKREF_REV 0 |
| 352 | #define BTRFS_MIXED_BACKREF_REV 1 |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 353 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 354 | /* |
| 355 | * every tree block (leaf or node) starts with this header. |
| 356 | */ |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 357 | struct btrfs_header { |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 358 | /* these first four must match the super block */ |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 359 | u8 csum[BTRFS_CSUM_SIZE]; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 360 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 361 | __le64 bytenr; /* which block this node is supposed to live in */ |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 362 | __le64 flags; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 363 | |
| 364 | /* allowed to be different from the super from here on down */ |
| 365 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 366 | __le64 generation; |
Chris Mason | 4d77567 | 2007-04-20 20:23:12 -0400 | [diff] [blame] | 367 | __le64 owner; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 368 | __le32 nritems; |
Chris Mason | 9a6f11e | 2007-03-27 09:06:38 -0400 | [diff] [blame] | 369 | u8 level; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 370 | } __attribute__ ((__packed__)); |
| 371 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 372 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 373 | sizeof(struct btrfs_header)) / \ |
| 374 | sizeof(struct btrfs_key_ptr)) |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 375 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 376 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 377 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
| 378 | sizeof(struct btrfs_item) - \ |
| 379 | sizeof(struct btrfs_file_extent_item)) |
Yan, Zheng | f34f57a | 2009-11-12 09:35:27 +0000 | [diff] [blame] | 380 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
| 381 | sizeof(struct btrfs_item) -\ |
| 382 | sizeof(struct btrfs_dir_item)) |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 383 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 384 | |
| 385 | /* |
| 386 | * this is a very generous portion of the super block, giving us |
| 387 | * room to translate 14 chunks with 3 stripes each. |
| 388 | */ |
| 389 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 |
Chris Mason | 7ae9c09 | 2008-04-18 10:29:49 -0400 | [diff] [blame] | 390 | #define BTRFS_LABEL_SIZE 256 |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 391 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 392 | /* |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 393 | * just in case we somehow lose the roots and are not able to mount, |
| 394 | * we store an array of the roots from previous transactions |
| 395 | * in the super. |
| 396 | */ |
| 397 | #define BTRFS_NUM_BACKUP_ROOTS 4 |
| 398 | struct btrfs_root_backup { |
| 399 | __le64 tree_root; |
| 400 | __le64 tree_root_gen; |
| 401 | |
| 402 | __le64 chunk_root; |
| 403 | __le64 chunk_root_gen; |
| 404 | |
| 405 | __le64 extent_root; |
| 406 | __le64 extent_root_gen; |
| 407 | |
| 408 | __le64 fs_root; |
| 409 | __le64 fs_root_gen; |
| 410 | |
| 411 | __le64 dev_root; |
| 412 | __le64 dev_root_gen; |
| 413 | |
| 414 | __le64 csum_root; |
| 415 | __le64 csum_root_gen; |
| 416 | |
| 417 | __le64 total_bytes; |
| 418 | __le64 bytes_used; |
| 419 | __le64 num_devices; |
| 420 | /* future */ |
Masanari Iida | d142324 | 2012-10-31 15:16:32 +0000 | [diff] [blame] | 421 | __le64 unused_64[4]; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 422 | |
| 423 | u8 tree_root_level; |
| 424 | u8 chunk_root_level; |
| 425 | u8 extent_root_level; |
| 426 | u8 fs_root_level; |
| 427 | u8 dev_root_level; |
| 428 | u8 csum_root_level; |
| 429 | /* future and to align */ |
| 430 | u8 unused_8[10]; |
| 431 | } __attribute__ ((__packed__)); |
| 432 | |
| 433 | /* |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 434 | * the super block basically lists the main trees of the FS |
| 435 | * it currently lacks any block count etc etc |
| 436 | */ |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 437 | struct btrfs_super_block { |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 438 | u8 csum[BTRFS_CSUM_SIZE]; |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 439 | /* the first 4 fields must match struct btrfs_header */ |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 440 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 441 | __le64 bytenr; /* this block number */ |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 442 | __le64 flags; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 443 | |
| 444 | /* allowed to be different from the btrfs_header from here own down */ |
Chris Mason | 3768f36 | 2007-03-13 16:47:54 -0400 | [diff] [blame] | 445 | __le64 magic; |
Chris Mason | 3768f36 | 2007-03-13 16:47:54 -0400 | [diff] [blame] | 446 | __le64 generation; |
| 447 | __le64 root; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 448 | __le64 chunk_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 449 | __le64 log_root; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 450 | |
| 451 | /* this will help find the new super based on the log root */ |
| 452 | __le64 log_root_transid; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 453 | __le64 total_bytes; |
| 454 | __le64 bytes_used; |
Chris Mason | 2e635a2 | 2007-03-21 11:12:56 -0400 | [diff] [blame] | 455 | __le64 root_dir_objectid; |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 456 | __le64 num_devices; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 457 | __le32 sectorsize; |
| 458 | __le32 nodesize; |
| 459 | __le32 leafsize; |
Chris Mason | 87ee04e | 2007-11-30 11:30:34 -0500 | [diff] [blame] | 460 | __le32 stripesize; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 461 | __le32 sys_chunk_array_size; |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 462 | __le64 chunk_root_generation; |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 463 | __le64 compat_flags; |
| 464 | __le64 compat_ro_flags; |
| 465 | __le64 incompat_flags; |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 466 | __le16 csum_type; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 467 | u8 root_level; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 468 | u8 chunk_root_level; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 469 | u8 log_root_level; |
Chris Mason | 0d81ba5 | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 470 | struct btrfs_dev_item dev_item; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 471 | |
Chris Mason | 7ae9c09 | 2008-04-18 10:29:49 -0400 | [diff] [blame] | 472 | char label[BTRFS_LABEL_SIZE]; |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 473 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 474 | __le64 cache_generation; |
| 475 | |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 476 | /* future expansion */ |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 477 | __le64 reserved[31]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 478 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 479 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
Chris Mason | cfaa729 | 2007-02-21 17:04:57 -0500 | [diff] [blame] | 480 | } __attribute__ ((__packed__)); |
| 481 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 482 | /* |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 483 | * Compat flags that we support. If any incompat flags are set other than the |
| 484 | * ones specified below then we will fail to mount |
| 485 | */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 486 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 487 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
Josef Bacik | 6737773 | 2010-09-16 16:19:09 -0400 | [diff] [blame] | 488 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
Li Zefan | a6fa6fa | 2010-10-25 15:12:26 +0800 | [diff] [blame] | 489 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 490 | /* |
| 491 | * some patches floated around with a second compression method |
| 492 | * lets save that incompat here for when they do get in |
| 493 | * Note we don't actually support it, we're just reserving the |
| 494 | * number |
| 495 | */ |
| 496 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) |
| 497 | |
| 498 | /* |
| 499 | * older kernels tried to do bigger metadata blocks, but the |
| 500 | * code was pretty buggy. Lets not let them try anymore. |
| 501 | */ |
| 502 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 503 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 504 | #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) |
| 505 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 506 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
| 507 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 508 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
| 509 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ |
Josef Bacik | 6737773 | 2010-09-16 16:19:09 -0400 | [diff] [blame] | 510 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
Li Zefan | a6fa6fa | 2010-10-25 15:12:26 +0800 | [diff] [blame] | 511 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 512 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 513 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
| 514 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 515 | |
| 516 | /* |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 517 | * 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] | 518 | * the item in the leaf (relative to the start of the data area) |
| 519 | */ |
Chris Mason | 0783fcf | 2007-03-12 20:12:07 -0400 | [diff] [blame] | 520 | struct btrfs_item { |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 521 | struct btrfs_disk_key key; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 522 | __le32 offset; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 523 | __le32 size; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 524 | } __attribute__ ((__packed__)); |
| 525 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 526 | /* |
| 527 | * leaves have an item area and a data area: |
| 528 | * [item0, item1....itemN] [free space] [dataN...data1, data0] |
| 529 | * |
| 530 | * The data is separate from the items to get the keys closer together |
| 531 | * during searches. |
| 532 | */ |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 533 | struct btrfs_leaf { |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 534 | struct btrfs_header header; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 535 | struct btrfs_item items[]; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 536 | } __attribute__ ((__packed__)); |
| 537 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 538 | /* |
| 539 | * all non-leaf blocks are nodes, they hold only keys and pointers to |
| 540 | * other blocks |
| 541 | */ |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 542 | struct btrfs_key_ptr { |
| 543 | struct btrfs_disk_key key; |
| 544 | __le64 blockptr; |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 545 | __le64 generation; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 546 | } __attribute__ ((__packed__)); |
| 547 | |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 548 | struct btrfs_node { |
Chris Mason | bb492bb | 2007-03-12 12:29:44 -0400 | [diff] [blame] | 549 | struct btrfs_header header; |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 550 | struct btrfs_key_ptr ptrs[]; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 551 | } __attribute__ ((__packed__)); |
| 552 | |
Chris Mason | fec577f | 2007-02-26 10:40:21 -0500 | [diff] [blame] | 553 | /* |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 554 | * btrfs_paths remember the path taken from the root down to the leaf. |
| 555 | * 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] | 556 | * to any other levels that are present. |
| 557 | * |
| 558 | * The slots array records the index of the item or block pointer |
| 559 | * used while walking the tree. |
| 560 | */ |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 561 | struct btrfs_path { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 562 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 563 | int slots[BTRFS_MAX_LEVEL]; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 564 | /* if there is real range locking, this locks field will change */ |
| 565 | int locks[BTRFS_MAX_LEVEL]; |
Chris Mason | 3c69fae | 2007-08-07 15:52:22 -0400 | [diff] [blame] | 566 | int reada; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 567 | /* keep some upper locks as we walk down */ |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 568 | int lowest_level; |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 569 | |
| 570 | /* |
| 571 | * set by btrfs_split_item, tells search_slot to keep all locks |
| 572 | * and to force calls to keep space in the nodes |
| 573 | */ |
Chris Mason | b947343 | 2009-03-13 11:00:37 -0400 | [diff] [blame] | 574 | unsigned int search_for_split:1; |
| 575 | unsigned int keep_locks:1; |
| 576 | unsigned int skip_locking:1; |
| 577 | unsigned int leave_spinning:1; |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 578 | unsigned int search_commit_root:1; |
Josef Bacik | d639378 | 2012-12-12 17:00:01 -0500 | [diff] [blame] | 579 | unsigned int really_keep_locks:1; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 580 | }; |
Chris Mason | 5de08d7 | 2007-02-24 06:24:44 -0500 | [diff] [blame] | 581 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 582 | /* |
| 583 | * items in the extent btree are used to record the objectid of the |
| 584 | * owner of the block and the number of references |
| 585 | */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 586 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 587 | struct btrfs_extent_item { |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 588 | __le64 refs; |
| 589 | __le64 generation; |
| 590 | __le64 flags; |
| 591 | } __attribute__ ((__packed__)); |
| 592 | |
| 593 | struct btrfs_extent_item_v0 { |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 594 | __le32 refs; |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 595 | } __attribute__ ((__packed__)); |
| 596 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 597 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
| 598 | sizeof(struct btrfs_item)) |
| 599 | |
| 600 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) |
| 601 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) |
| 602 | |
| 603 | /* following flags only apply to tree blocks */ |
| 604 | |
| 605 | /* use full backrefs for extent pointers in the block */ |
| 606 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) |
| 607 | |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 608 | /* |
| 609 | * this flag is only used internally by scrub and may be changed at any time |
| 610 | * it is only declared here to avoid collisions |
| 611 | */ |
| 612 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) |
| 613 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 614 | struct btrfs_tree_block_info { |
| 615 | struct btrfs_disk_key key; |
| 616 | u8 level; |
| 617 | } __attribute__ ((__packed__)); |
| 618 | |
| 619 | struct btrfs_extent_data_ref { |
| 620 | __le64 root; |
| 621 | __le64 objectid; |
| 622 | __le64 offset; |
| 623 | __le32 count; |
| 624 | } __attribute__ ((__packed__)); |
| 625 | |
| 626 | struct btrfs_shared_data_ref { |
| 627 | __le32 count; |
| 628 | } __attribute__ ((__packed__)); |
| 629 | |
| 630 | struct btrfs_extent_inline_ref { |
| 631 | u8 type; |
Yan Zheng | 1bec1ae | 2009-07-22 09:59:00 -0400 | [diff] [blame] | 632 | __le64 offset; |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 633 | } __attribute__ ((__packed__)); |
| 634 | |
| 635 | /* old style backrefs item */ |
| 636 | struct btrfs_extent_ref_v0 { |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 637 | __le64 root; |
| 638 | __le64 generation; |
| 639 | __le64 objectid; |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 640 | __le32 count; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 641 | } __attribute__ ((__packed__)); |
| 642 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 643 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 644 | /* dev extents record free space on individual devices. The owner |
| 645 | * field points back to the chunk allocation mapping tree that allocated |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 646 | * 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] | 647 | */ |
| 648 | struct btrfs_dev_extent { |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 649 | __le64 chunk_tree; |
| 650 | __le64 chunk_objectid; |
| 651 | __le64 chunk_offset; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 652 | __le64 length; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 653 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 654 | } __attribute__ ((__packed__)); |
| 655 | |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 656 | struct btrfs_inode_ref { |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 657 | __le64 index; |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 658 | __le16 name_len; |
| 659 | /* name goes here */ |
| 660 | } __attribute__ ((__packed__)); |
| 661 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 662 | struct btrfs_inode_extref { |
| 663 | __le64 parent_objectid; |
| 664 | __le64 index; |
| 665 | __le16 name_len; |
| 666 | __u8 name[0]; |
| 667 | /* name goes here */ |
| 668 | } __attribute__ ((__packed__)); |
| 669 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 670 | struct btrfs_timespec { |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 671 | __le64 sec; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 672 | __le32 nsec; |
| 673 | } __attribute__ ((__packed__)); |
| 674 | |
Jan Engelhardt | 95029d7 | 2009-01-21 10:49:16 -0500 | [diff] [blame] | 675 | enum btrfs_compression_type { |
Li Zefan | 261507a0 | 2010-12-17 14:21:50 +0800 | [diff] [blame] | 676 | BTRFS_COMPRESS_NONE = 0, |
| 677 | BTRFS_COMPRESS_ZLIB = 1, |
Li Zefan | a6fa6fa | 2010-10-25 15:12:26 +0800 | [diff] [blame] | 678 | BTRFS_COMPRESS_LZO = 2, |
| 679 | BTRFS_COMPRESS_TYPES = 2, |
| 680 | BTRFS_COMPRESS_LAST = 3, |
Jan Engelhardt | 95029d7 | 2009-01-21 10:49:16 -0500 | [diff] [blame] | 681 | }; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 682 | |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 683 | struct btrfs_inode_item { |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 684 | /* nfs style generation number */ |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 685 | __le64 generation; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 686 | /* transid that last touched this inode */ |
| 687 | __le64 transid; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 688 | __le64 size; |
Yan Zheng | a76a3cd | 2008-10-09 11:46:29 -0400 | [diff] [blame] | 689 | __le64 nbytes; |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 690 | __le64 block_group; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 691 | __le32 nlink; |
| 692 | __le32 uid; |
| 693 | __le32 gid; |
| 694 | __le32 mode; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 695 | __le64 rdev; |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 696 | __le64 flags; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 697 | |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 698 | /* modification sequence number for NFS */ |
| 699 | __le64 sequence; |
| 700 | |
| 701 | /* |
| 702 | * a little future expansion, for more than this we can |
| 703 | * just grow the inode item and version it |
| 704 | */ |
| 705 | __le64 reserved[4]; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 706 | struct btrfs_timespec atime; |
| 707 | struct btrfs_timespec ctime; |
| 708 | struct btrfs_timespec mtime; |
| 709 | struct btrfs_timespec otime; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 710 | } __attribute__ ((__packed__)); |
| 711 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 712 | struct btrfs_dir_log_item { |
| 713 | __le64 end; |
| 714 | } __attribute__ ((__packed__)); |
| 715 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 716 | struct btrfs_dir_item { |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 717 | struct btrfs_disk_key location; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 718 | __le64 transid; |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 719 | __le16 data_len; |
Chris Mason | a8a2ee0 | 2007-03-16 08:46:49 -0400 | [diff] [blame] | 720 | __le16 name_len; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 721 | u8 type; |
| 722 | } __attribute__ ((__packed__)); |
| 723 | |
Li Zefan | b83cc96 | 2010-12-20 16:04:08 +0800 | [diff] [blame] | 724 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
| 725 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 726 | struct btrfs_root_item { |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 727 | struct btrfs_inode_item inode; |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 728 | __le64 generation; |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 729 | __le64 root_dirid; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 730 | __le64 bytenr; |
| 731 | __le64 byte_limit; |
| 732 | __le64 bytes_used; |
Yan Zheng | 80ff385 | 2008-10-30 14:20:02 -0400 | [diff] [blame] | 733 | __le64 last_snapshot; |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 734 | __le64 flags; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 735 | __le32 refs; |
Chris Mason | 5eda7b5 | 2007-06-22 14:16:25 -0400 | [diff] [blame] | 736 | struct btrfs_disk_key drop_progress; |
| 737 | u8 drop_level; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 738 | u8 level; |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 739 | |
| 740 | /* |
| 741 | * The following fields appear after subvol_uuids+subvol_times |
| 742 | * were introduced. |
| 743 | */ |
| 744 | |
| 745 | /* |
| 746 | * This generation number is used to test if the new fields are valid |
| 747 | * and up to date while reading the root item. Everytime the root item |
| 748 | * is written out, the "generation" field is copied into this field. If |
| 749 | * anyone ever mounted the fs with an older kernel, we will have |
| 750 | * mismatching generation values here and thus must invalidate the |
| 751 | * new fields. See btrfs_update_root and btrfs_find_last_root for |
| 752 | * details. |
| 753 | * the offset of generation_v2 is also used as the start for the memset |
| 754 | * when invalidating the fields. |
| 755 | */ |
| 756 | __le64 generation_v2; |
| 757 | u8 uuid[BTRFS_UUID_SIZE]; |
| 758 | u8 parent_uuid[BTRFS_UUID_SIZE]; |
| 759 | u8 received_uuid[BTRFS_UUID_SIZE]; |
| 760 | __le64 ctransid; /* updated when an inode changes */ |
| 761 | __le64 otransid; /* trans when created */ |
| 762 | __le64 stransid; /* trans when sent. non-zero for received subvol */ |
| 763 | __le64 rtransid; /* trans when received. non-zero for received subvol */ |
| 764 | struct btrfs_timespec ctime; |
| 765 | struct btrfs_timespec otime; |
| 766 | struct btrfs_timespec stime; |
| 767 | struct btrfs_timespec rtime; |
| 768 | __le64 reserved[8]; /* for future */ |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 769 | } __attribute__ ((__packed__)); |
| 770 | |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 771 | /* |
| 772 | * this is used for both forward and backward root refs |
| 773 | */ |
| 774 | struct btrfs_root_ref { |
| 775 | __le64 dirid; |
| 776 | __le64 sequence; |
| 777 | __le16 name_len; |
| 778 | } __attribute__ ((__packed__)); |
| 779 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 780 | struct btrfs_disk_balance_args { |
| 781 | /* |
| 782 | * profiles to operate on, single is denoted by |
| 783 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE |
| 784 | */ |
| 785 | __le64 profiles; |
| 786 | |
| 787 | /* usage filter */ |
| 788 | __le64 usage; |
| 789 | |
| 790 | /* devid filter */ |
| 791 | __le64 devid; |
| 792 | |
| 793 | /* devid subset filter [pstart..pend) */ |
| 794 | __le64 pstart; |
| 795 | __le64 pend; |
| 796 | |
| 797 | /* btrfs virtual address space subset filter [vstart..vend) */ |
| 798 | __le64 vstart; |
| 799 | __le64 vend; |
| 800 | |
| 801 | /* |
| 802 | * profile to convert to, single is denoted by |
| 803 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE |
| 804 | */ |
| 805 | __le64 target; |
| 806 | |
| 807 | /* BTRFS_BALANCE_ARGS_* */ |
| 808 | __le64 flags; |
| 809 | |
| 810 | __le64 unused[8]; |
| 811 | } __attribute__ ((__packed__)); |
| 812 | |
| 813 | /* |
| 814 | * store balance parameters to disk so that balance can be properly |
| 815 | * resumed after crash or unmount |
| 816 | */ |
| 817 | struct btrfs_balance_item { |
| 818 | /* BTRFS_BALANCE_* */ |
| 819 | __le64 flags; |
| 820 | |
| 821 | struct btrfs_disk_balance_args data; |
| 822 | struct btrfs_disk_balance_args meta; |
| 823 | struct btrfs_disk_balance_args sys; |
| 824 | |
| 825 | __le64 unused[4]; |
| 826 | } __attribute__ ((__packed__)); |
| 827 | |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 828 | #define BTRFS_FILE_EXTENT_INLINE 0 |
| 829 | #define BTRFS_FILE_EXTENT_REG 1 |
| 830 | #define BTRFS_FILE_EXTENT_PREALLOC 2 |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 831 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 832 | struct btrfs_file_extent_item { |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 833 | /* |
| 834 | * transaction id that created this extent |
| 835 | */ |
Chris Mason | 71951f3 | 2007-03-27 09:16:29 -0400 | [diff] [blame] | 836 | __le64 generation; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 837 | /* |
| 838 | * max number of bytes to hold this extent in ram |
| 839 | * when we split a compressed extent we can't know how big |
| 840 | * each of the resulting pieces will be. So, this is |
| 841 | * an upper limit on the size of the extent in ram instead of |
| 842 | * an exact limit. |
| 843 | */ |
| 844 | __le64 ram_bytes; |
| 845 | |
| 846 | /* |
| 847 | * 32 bits for the various ways we might encode the data, |
| 848 | * including compression and encryption. If any of these |
| 849 | * are set to something a given disk format doesn't understand |
| 850 | * it is treated like an incompat flag for reading and writing, |
| 851 | * but not for stat. |
| 852 | */ |
| 853 | u8 compression; |
| 854 | u8 encryption; |
| 855 | __le16 other_encoding; /* spare for later use */ |
| 856 | |
| 857 | /* are we inline data or a real extent? */ |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 858 | u8 type; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 859 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 860 | /* |
| 861 | * disk space consumed by the extent, checksum blocks are included |
| 862 | * in these numbers |
| 863 | */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 864 | __le64 disk_bytenr; |
| 865 | __le64 disk_num_bytes; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 866 | /* |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 867 | * the logical offset in file blocks (no csums) |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 868 | * this extent record is for. This allows a file extent to point |
| 869 | * into the middle of an existing extent on disk, sharing it |
| 870 | * between two snapshots (useful if some bytes in the middle of the |
| 871 | * extent have changed |
| 872 | */ |
| 873 | __le64 offset; |
| 874 | /* |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 875 | * the logical number of file blocks (no csums included). This |
| 876 | * always reflects the size uncompressed and without encoding. |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 877 | */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 878 | __le64 num_bytes; |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 879 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 880 | } __attribute__ ((__packed__)); |
| 881 | |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 882 | struct btrfs_csum_item { |
Chris Mason | 509659c | 2007-05-10 12:36:17 -0400 | [diff] [blame] | 883 | u8 csum; |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 884 | } __attribute__ ((__packed__)); |
| 885 | |
Stefan Behrens | 733f4fb | 2012-05-25 16:06:10 +0200 | [diff] [blame] | 886 | struct btrfs_dev_stats_item { |
| 887 | /* |
| 888 | * grow this item struct at the end for future enhancements and keep |
| 889 | * the existing values unchanged |
| 890 | */ |
| 891 | __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; |
| 892 | } __attribute__ ((__packed__)); |
| 893 | |
Stefan Behrens | e922e08 | 2012-11-05 17:26:40 +0100 | [diff] [blame] | 894 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 |
| 895 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 |
| 896 | #define BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED 0 |
| 897 | #define BTRFS_DEV_REPLACE_ITEM_STATE_STARTED 1 |
| 898 | #define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 2 |
| 899 | #define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 3 |
| 900 | #define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 4 |
| 901 | |
| 902 | struct btrfs_dev_replace { |
| 903 | u64 replace_state; /* see #define above */ |
| 904 | u64 time_started; /* seconds since 1-Jan-1970 */ |
| 905 | u64 time_stopped; /* seconds since 1-Jan-1970 */ |
| 906 | atomic64_t num_write_errors; |
| 907 | atomic64_t num_uncorrectable_read_errors; |
| 908 | |
| 909 | u64 cursor_left; |
| 910 | u64 committed_cursor_left; |
| 911 | u64 cursor_left_last_write_of_item; |
| 912 | u64 cursor_right; |
| 913 | |
| 914 | u64 cont_reading_from_srcdev_mode; /* see #define above */ |
| 915 | |
| 916 | int is_valid; |
| 917 | int item_needs_writeback; |
| 918 | struct btrfs_device *srcdev; |
| 919 | struct btrfs_device *tgtdev; |
| 920 | |
| 921 | pid_t lock_owner; |
| 922 | atomic_t nesting_level; |
| 923 | struct mutex lock_finishing_cancel_unmount; |
| 924 | struct mutex lock_management_lock; |
| 925 | struct mutex lock; |
| 926 | |
| 927 | struct btrfs_scrub_progress scrub_progress; |
| 928 | }; |
| 929 | |
Stefan Behrens | a2bff64 | 2012-11-05 17:32:20 +0100 | [diff] [blame] | 930 | struct btrfs_dev_replace_item { |
| 931 | /* |
| 932 | * grow this item struct at the end for future enhancements and keep |
| 933 | * the existing values unchanged |
| 934 | */ |
| 935 | __le64 src_devid; |
| 936 | __le64 cursor_left; |
| 937 | __le64 cursor_right; |
| 938 | __le64 cont_reading_from_srcdev_mode; |
| 939 | |
| 940 | __le64 replace_state; |
| 941 | __le64 time_started; |
| 942 | __le64 time_stopped; |
| 943 | __le64 num_write_errors; |
| 944 | __le64 num_uncorrectable_read_errors; |
| 945 | } __attribute__ ((__packed__)); |
| 946 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 947 | /* different types of block groups (and chunks) */ |
Ilya Dryomov | 52ba692 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 948 | #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) |
| 949 | #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) |
| 950 | #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) |
| 951 | #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) |
| 952 | #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) |
| 953 | #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) |
| 954 | #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) |
Ilya Dryomov | a46d11a | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 955 | #define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE |
Ilya Dryomov | 52ba692 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 956 | #define BTRFS_NR_RAID_TYPES 5 |
Chris Mason | 1e2677e | 2007-05-29 16:52:18 -0400 | [diff] [blame] | 957 | |
Ilya Dryomov | 52ba692 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 958 | #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \ |
| 959 | BTRFS_BLOCK_GROUP_SYSTEM | \ |
| 960 | BTRFS_BLOCK_GROUP_METADATA) |
| 961 | |
| 962 | #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \ |
| 963 | BTRFS_BLOCK_GROUP_RAID1 | \ |
| 964 | BTRFS_BLOCK_GROUP_DUP | \ |
| 965 | BTRFS_BLOCK_GROUP_RAID10) |
Ilya Dryomov | a46d11a | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 966 | /* |
| 967 | * We need a bit for restriper to be able to tell when chunks of type |
| 968 | * SINGLE are available. This "extended" profile format is used in |
| 969 | * fs_info->avail_*_alloc_bits (in-memory) and balance item fields |
| 970 | * (on-disk). The corresponding on-disk bit in chunk.type is reserved |
| 971 | * to avoid remappings between two formats in future. |
| 972 | */ |
| 973 | #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) |
| 974 | |
Ilya Dryomov | 899c81e | 2012-03-27 17:09:16 +0300 | [diff] [blame] | 975 | #define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | \ |
| 976 | BTRFS_AVAIL_ALLOC_BIT_SINGLE) |
| 977 | |
| 978 | static inline u64 chunk_to_extended(u64 flags) |
| 979 | { |
| 980 | if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0) |
| 981 | flags |= BTRFS_AVAIL_ALLOC_BIT_SINGLE; |
| 982 | |
| 983 | return flags; |
| 984 | } |
| 985 | static inline u64 extended_to_chunk(u64 flags) |
| 986 | { |
| 987 | return flags & ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; |
| 988 | } |
| 989 | |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 990 | struct btrfs_block_group_item { |
| 991 | __le64 used; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 992 | __le64 chunk_objectid; |
| 993 | __le64 flags; |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 994 | } __attribute__ ((__packed__)); |
| 995 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 996 | /* |
| 997 | * is subvolume quota turned on? |
| 998 | */ |
| 999 | #define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) |
| 1000 | /* |
| 1001 | * SCANNING is set during the initialization phase |
| 1002 | */ |
| 1003 | #define BTRFS_QGROUP_STATUS_FLAG_SCANNING (1ULL << 1) |
| 1004 | /* |
| 1005 | * Some qgroup entries are known to be out of date, |
| 1006 | * either because the configuration has changed in a way that |
| 1007 | * makes a rescan necessary, or because the fs has been mounted |
| 1008 | * with a non-qgroup-aware version. |
| 1009 | * Turning qouta off and on again makes it inconsistent, too. |
| 1010 | */ |
| 1011 | #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) |
| 1012 | |
| 1013 | #define BTRFS_QGROUP_STATUS_VERSION 1 |
| 1014 | |
| 1015 | struct btrfs_qgroup_status_item { |
| 1016 | __le64 version; |
| 1017 | /* |
| 1018 | * the generation is updated during every commit. As older |
| 1019 | * versions of btrfs are not aware of qgroups, it will be |
| 1020 | * possible to detect inconsistencies by checking the |
| 1021 | * generation on mount time |
| 1022 | */ |
| 1023 | __le64 generation; |
| 1024 | |
| 1025 | /* flag definitions see above */ |
| 1026 | __le64 flags; |
| 1027 | |
| 1028 | /* |
| 1029 | * only used during scanning to record the progress |
| 1030 | * of the scan. It contains a logical address |
| 1031 | */ |
| 1032 | __le64 scan; |
| 1033 | } __attribute__ ((__packed__)); |
| 1034 | |
| 1035 | struct btrfs_qgroup_info_item { |
| 1036 | __le64 generation; |
| 1037 | __le64 rfer; |
| 1038 | __le64 rfer_cmpr; |
| 1039 | __le64 excl; |
| 1040 | __le64 excl_cmpr; |
| 1041 | } __attribute__ ((__packed__)); |
| 1042 | |
| 1043 | /* flags definition for qgroup limits */ |
| 1044 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) |
| 1045 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) |
| 1046 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) |
| 1047 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) |
| 1048 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) |
| 1049 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) |
| 1050 | |
| 1051 | struct btrfs_qgroup_limit_item { |
| 1052 | /* |
| 1053 | * only updated when any of the other values change |
| 1054 | */ |
| 1055 | __le64 flags; |
| 1056 | __le64 max_rfer; |
| 1057 | __le64 max_excl; |
| 1058 | __le64 rsv_rfer; |
| 1059 | __le64 rsv_excl; |
| 1060 | } __attribute__ ((__packed__)); |
| 1061 | |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1062 | struct btrfs_space_info { |
| 1063 | u64 flags; |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1064 | |
Josef Bacik | 89a5589 | 2010-10-14 14:52:27 -0400 | [diff] [blame] | 1065 | u64 total_bytes; /* total bytes in the space, |
| 1066 | this doesn't take mirrors into account */ |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 1067 | u64 bytes_used; /* total bytes used, |
Lucas De Marchi | e9c5499 | 2011-04-26 23:28:26 -0700 | [diff] [blame] | 1068 | this doesn't take mirrors into account */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1069 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
| 1070 | transaction finishes */ |
| 1071 | u64 bytes_reserved; /* total bytes the allocator has reserved for |
| 1072 | current allocations */ |
| 1073 | u64 bytes_readonly; /* total bytes that are read only */ |
Yan, Zheng | 8929ecfa | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 1074 | |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1075 | u64 bytes_may_use; /* number of bytes that may be used for |
Josef Bacik | 9ed74f2 | 2009-09-11 16:12:44 -0400 | [diff] [blame] | 1076 | delalloc/allocations */ |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 1077 | u64 disk_used; /* total bytes used on disk */ |
Josef Bacik | 89a5589 | 2010-10-14 14:52:27 -0400 | [diff] [blame] | 1078 | u64 disk_total; /* total bytes on disk, takes mirrors into |
| 1079 | account */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1080 | |
Chris Mason | 36e39c4 | 2011-03-12 07:08:42 -0500 | [diff] [blame] | 1081 | /* |
| 1082 | * we bump reservation progress every time we decrement |
| 1083 | * bytes_reserved. This way people waiting for reservations |
| 1084 | * know something good has happened and they can check |
| 1085 | * for progress. The number here isn't to be trusted, it |
| 1086 | * just shows reclaim activity |
| 1087 | */ |
| 1088 | unsigned long reservation_progress; |
| 1089 | |
David Sterba | 4ea0288 | 2011-05-12 18:13:12 +0200 | [diff] [blame] | 1090 | unsigned int full:1; /* indicates that we cannot allocate any more |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1091 | chunks for this space */ |
David Sterba | 4ea0288 | 2011-05-12 18:13:12 +0200 | [diff] [blame] | 1092 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ |
Josef Bacik | 6d74119 | 2011-04-11 20:20:11 -0400 | [diff] [blame] | 1093 | |
Josef Bacik | fdb5eff | 2011-06-07 16:07:44 -0400 | [diff] [blame] | 1094 | unsigned int flush:1; /* set if we are trying to make space */ |
| 1095 | |
David Sterba | 4ea0288 | 2011-05-12 18:13:12 +0200 | [diff] [blame] | 1096 | unsigned int force_alloc; /* set if we need to force a chunk |
| 1097 | alloc for this space */ |
Josef Bacik | 6a63209 | 2009-02-20 11:00:09 -0500 | [diff] [blame] | 1098 | |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1099 | struct list_head list; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1100 | |
| 1101 | /* for block groups in our same type */ |
Yan, Zheng | b742bb8 | 2010-05-16 10:46:24 -0400 | [diff] [blame] | 1102 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1103 | spinlock_t lock; |
Josef Bacik | 80eb234 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 1104 | struct rw_semaphore groups_sem; |
Josef Bacik | fdb5eff | 2011-06-07 16:07:44 -0400 | [diff] [blame] | 1105 | wait_queue_head_t wait; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1106 | }; |
| 1107 | |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 1108 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
| 1109 | #define BTRFS_BLOCK_RSV_DELALLOC 2 |
| 1110 | #define BTRFS_BLOCK_RSV_TRANS 3 |
| 1111 | #define BTRFS_BLOCK_RSV_CHUNK 4 |
| 1112 | #define BTRFS_BLOCK_RSV_DELOPS 5 |
| 1113 | #define BTRFS_BLOCK_RSV_EMPTY 6 |
| 1114 | #define BTRFS_BLOCK_RSV_TEMP 7 |
| 1115 | |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1116 | struct btrfs_block_rsv { |
| 1117 | u64 size; |
| 1118 | u64 reserved; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1119 | struct btrfs_space_info *space_info; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1120 | spinlock_t lock; |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 1121 | unsigned short full; |
| 1122 | unsigned short type; |
| 1123 | unsigned short failfast; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1124 | }; |
| 1125 | |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 1126 | /* |
| 1127 | * free clusters are used to claim free space in relatively large chunks, |
| 1128 | * allowing us to do less seeky writes. They are used for all metadata |
| 1129 | * allocations and data allocations in ssd mode. |
| 1130 | */ |
| 1131 | struct btrfs_free_cluster { |
| 1132 | spinlock_t lock; |
| 1133 | spinlock_t refill_lock; |
| 1134 | struct rb_root root; |
| 1135 | |
| 1136 | /* largest extent in this cluster */ |
| 1137 | u64 max_size; |
| 1138 | |
| 1139 | /* first extent starting offset */ |
| 1140 | u64 window_start; |
| 1141 | |
| 1142 | struct btrfs_block_group_cache *block_group; |
| 1143 | /* |
| 1144 | * when a cluster is allocated from a block group, we put the |
| 1145 | * cluster onto a list in the block group so that it can |
| 1146 | * be freed before the block group is freed. |
| 1147 | */ |
| 1148 | struct list_head block_group_list; |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1149 | }; |
| 1150 | |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1151 | enum btrfs_caching_type { |
| 1152 | BTRFS_CACHE_NO = 0, |
| 1153 | BTRFS_CACHE_STARTED = 1, |
Josef Bacik | 291c7d2 | 2011-11-14 13:52:14 -0500 | [diff] [blame] | 1154 | BTRFS_CACHE_FAST = 2, |
| 1155 | BTRFS_CACHE_FINISHED = 3, |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1156 | }; |
| 1157 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1158 | enum btrfs_disk_cache_state { |
| 1159 | BTRFS_DC_WRITTEN = 0, |
| 1160 | BTRFS_DC_ERROR = 1, |
| 1161 | BTRFS_DC_CLEAR = 2, |
| 1162 | BTRFS_DC_SETUP = 3, |
| 1163 | BTRFS_DC_NEED_WRITE = 4, |
| 1164 | }; |
| 1165 | |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1166 | struct btrfs_caching_control { |
| 1167 | struct list_head list; |
| 1168 | struct mutex mutex; |
| 1169 | wait_queue_head_t wait; |
Josef Bacik | bab39bf | 2011-06-30 14:42:28 -0400 | [diff] [blame] | 1170 | struct btrfs_work work; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1171 | struct btrfs_block_group_cache *block_group; |
| 1172 | u64 progress; |
| 1173 | atomic_t count; |
| 1174 | }; |
| 1175 | |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1176 | struct btrfs_block_group_cache { |
| 1177 | struct btrfs_key key; |
| 1178 | struct btrfs_block_group_item item; |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1179 | struct btrfs_fs_info *fs_info; |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1180 | struct inode *inode; |
Chris Mason | c286ac4 | 2008-07-22 23:06:41 -0400 | [diff] [blame] | 1181 | spinlock_t lock; |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 1182 | u64 pinned; |
Zheng Yan | e856981 | 2008-09-26 10:05:48 -0400 | [diff] [blame] | 1183 | u64 reserved; |
Josef Bacik | 1b2da37 | 2009-09-11 16:11:20 -0400 | [diff] [blame] | 1184 | u64 bytes_super; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1185 | u64 flags; |
Josef Bacik | 9630308 | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1186 | u64 sectorsize; |
Josef Bacik | 5b0e95b | 2011-10-06 08:58:24 -0400 | [diff] [blame] | 1187 | u64 cache_generation; |
Mariusz Kozlowski | 0410c94 | 2010-11-20 12:03:07 +0000 | [diff] [blame] | 1188 | unsigned int ro:1; |
| 1189 | unsigned int dirty:1; |
| 1190 | unsigned int iref:1; |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1191 | |
| 1192 | int disk_cache_state; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1193 | |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1194 | /* cache tracking stuff */ |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1195 | int cached; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1196 | struct btrfs_caching_control *caching_ctl; |
| 1197 | u64 last_byte_to_unpin; |
Josef Bacik | 817d52f | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 1198 | |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1199 | struct btrfs_space_info *space_info; |
| 1200 | |
| 1201 | /* free space cache stuff */ |
Li Zefan | 34d52cb | 2011-03-29 13:46:06 +0800 | [diff] [blame] | 1202 | struct btrfs_free_space_ctl *free_space_ctl; |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1203 | |
| 1204 | /* block group cache stuff */ |
| 1205 | struct rb_node cache_node; |
| 1206 | |
| 1207 | /* for block groups in the same raid type */ |
| 1208 | struct list_head list; |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 1209 | |
| 1210 | /* usage count */ |
| 1211 | atomic_t count; |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 1212 | |
| 1213 | /* List of struct btrfs_free_clusters for this block group. |
| 1214 | * Today it will only have one thing on it, but that may change |
| 1215 | */ |
| 1216 | struct list_head cluster_list; |
Josef Bacik | ea658ba | 2012-09-11 16:57:25 -0400 | [diff] [blame] | 1217 | |
| 1218 | /* For delayed block group creation */ |
| 1219 | struct list_head new_bg_list; |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1220 | }; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1221 | |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 1222 | /* delayed seq elem */ |
| 1223 | struct seq_list { |
| 1224 | struct list_head list; |
| 1225 | u64 seq; |
| 1226 | }; |
| 1227 | |
| 1228 | /* fs_info */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1229 | struct reloc_control; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1230 | struct btrfs_device; |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 1231 | struct btrfs_fs_devices; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1232 | struct btrfs_balance_control; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1233 | struct btrfs_delayed_root; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1234 | struct btrfs_fs_info { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1235 | u8 fsid[BTRFS_FSID_SIZE]; |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1236 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1237 | struct btrfs_root *extent_root; |
| 1238 | struct btrfs_root *tree_root; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1239 | struct btrfs_root *chunk_root; |
| 1240 | struct btrfs_root *dev_root; |
Chris Mason | 3de4586 | 2008-11-17 21:02:50 -0500 | [diff] [blame] | 1241 | struct btrfs_root *fs_root; |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 1242 | struct btrfs_root *csum_root; |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1243 | struct btrfs_root *quota_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1244 | |
| 1245 | /* the log root tree is a directory of all the other log roots */ |
| 1246 | struct btrfs_root *log_root_tree; |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 1247 | |
| 1248 | spinlock_t fs_roots_radix_lock; |
Chris Mason | 0f7d52f | 2007-04-09 10:42:37 -0400 | [diff] [blame] | 1249 | struct radix_tree_root fs_roots_radix; |
Chris Mason | 1a5bc16 | 2007-10-15 16:15:26 -0400 | [diff] [blame] | 1250 | |
Josef Bacik | 0f9dd46 | 2008-09-23 13:14:11 -0400 | [diff] [blame] | 1251 | /* block group cache stuff */ |
| 1252 | spinlock_t block_group_cache_lock; |
| 1253 | struct rb_root block_group_cache_tree; |
| 1254 | |
Josef Bacik | 2bf6475 | 2011-09-26 17:12:22 -0400 | [diff] [blame] | 1255 | /* keep track of unallocated space */ |
| 1256 | spinlock_t free_chunk_lock; |
| 1257 | u64 free_chunk_space; |
| 1258 | |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1259 | struct extent_io_tree freed_extents[2]; |
| 1260 | struct extent_io_tree *pinned_extents; |
Chris Mason | 1a5bc16 | 2007-10-15 16:15:26 -0400 | [diff] [blame] | 1261 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1262 | /* logical->physical extent mapping */ |
| 1263 | struct btrfs_mapping_tree mapping_tree; |
| 1264 | |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1265 | /* |
| 1266 | * block reservation for extent, checksum, root tree and |
| 1267 | * delayed dir index item |
| 1268 | */ |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1269 | struct btrfs_block_rsv global_block_rsv; |
| 1270 | /* block reservation for delay allocation */ |
| 1271 | struct btrfs_block_rsv delalloc_block_rsv; |
| 1272 | /* block reservation for metadata operations */ |
| 1273 | struct btrfs_block_rsv trans_block_rsv; |
| 1274 | /* block reservation for chunk tree */ |
| 1275 | struct btrfs_block_rsv chunk_block_rsv; |
Josef Bacik | 6d668dd | 2011-11-03 22:54:25 -0400 | [diff] [blame] | 1276 | /* block reservation for delayed operations */ |
| 1277 | struct btrfs_block_rsv delayed_block_rsv; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1278 | |
| 1279 | struct btrfs_block_rsv empty_block_rsv; |
| 1280 | |
Chris Mason | 293ffd5 | 2007-03-20 15:57:25 -0400 | [diff] [blame] | 1281 | u64 generation; |
Josef Bacik | 15ee9bc | 2007-08-10 16:22:09 -0400 | [diff] [blame] | 1282 | u64 last_trans_committed; |
Chris Mason | 12fcfd2 | 2009-03-24 10:24:20 -0400 | [diff] [blame] | 1283 | |
| 1284 | /* |
| 1285 | * this is updated to the current trans every time a full commit |
| 1286 | * is required instead of the faster short fsync log commits |
| 1287 | */ |
| 1288 | u64 last_trans_log_full_commit; |
Stefan Behrens | 25cd999 | 2012-03-30 13:58:32 +0200 | [diff] [blame] | 1289 | unsigned long mount_opt; |
Li Zefan | 261507a0 | 2010-12-17 14:21:50 +0800 | [diff] [blame] | 1290 | unsigned long compress_type:4; |
Chris Mason | 6f568d3 | 2008-01-29 16:03:38 -0500 | [diff] [blame] | 1291 | u64 max_inline; |
Chris Mason | 8f662a7 | 2008-01-02 10:01:11 -0500 | [diff] [blame] | 1292 | u64 alloc_start; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 1293 | struct btrfs_transaction *running_transaction; |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 1294 | wait_queue_head_t transaction_throttle; |
Chris Mason | f929574 | 2008-07-17 12:54:14 -0400 | [diff] [blame] | 1295 | wait_queue_head_t transaction_wait; |
Sage Weil | bb9c12c | 2010-10-29 15:37:34 -0400 | [diff] [blame] | 1296 | wait_queue_head_t transaction_blocked_wait; |
Chris Mason | 771ed68 | 2008-11-06 22:02:51 -0500 | [diff] [blame] | 1297 | wait_queue_head_t async_submit_wait; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1298 | |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 1299 | struct btrfs_super_block *super_copy; |
| 1300 | struct btrfs_super_block *super_for_commit; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1301 | struct block_device *__bdev; |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 1302 | struct super_block *sb; |
Chris Mason | d98237b | 2007-03-28 13:57:48 -0400 | [diff] [blame] | 1303 | struct inode *btree_inode; |
Chris Mason | 0416008 | 2008-03-26 10:28:07 -0400 | [diff] [blame] | 1304 | struct backing_dev_info bdi; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1305 | struct mutex tree_log_mutex; |
Chris Mason | a74a4b9 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 1306 | struct mutex transaction_kthread_mutex; |
| 1307 | struct mutex cleaner_mutex; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 1308 | struct mutex chunk_mutex; |
Chris Mason | 7d9eb12 | 2008-07-08 14:19:17 -0400 | [diff] [blame] | 1309 | struct mutex volume_mutex; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1310 | /* |
| 1311 | * this protects the ordered operations list only while we are |
| 1312 | * processing all of the entries on it. This way we make |
| 1313 | * sure the commit code doesn't find the list temporarily empty |
| 1314 | * because another function happens to be doing non-waiting preflush |
| 1315 | * before jumping into the main commit. |
| 1316 | */ |
| 1317 | struct mutex ordered_operations_mutex; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1318 | struct rw_semaphore extent_commit_sem; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1319 | |
Yan, Zheng | c71bf09 | 2009-11-12 09:34:40 +0000 | [diff] [blame] | 1320 | struct rw_semaphore cleanup_work_sem; |
Yan, Zheng | 76dda93 | 2009-09-21 16:00:26 -0400 | [diff] [blame] | 1321 | |
Yan, Zheng | c71bf09 | 2009-11-12 09:34:40 +0000 | [diff] [blame] | 1322 | struct rw_semaphore subvol_sem; |
Yan, Zheng | 76dda93 | 2009-09-21 16:00:26 -0400 | [diff] [blame] | 1323 | struct srcu_struct subvol_srcu; |
| 1324 | |
Josef Bacik | a4abeea | 2011-04-11 17:25:13 -0400 | [diff] [blame] | 1325 | spinlock_t trans_lock; |
Chris Mason | 7585717 | 2011-06-13 20:00:16 -0400 | [diff] [blame] | 1326 | /* |
| 1327 | * the reloc mutex goes with the trans lock, it is taken |
| 1328 | * during commit to protect us from the relocation code |
| 1329 | */ |
| 1330 | struct mutex reloc_mutex; |
| 1331 | |
Chris Mason | 8fd1779 | 2007-04-19 21:01:03 -0400 | [diff] [blame] | 1332 | struct list_head trans_list; |
Chris Mason | facda1e | 2007-06-08 18:11:48 -0400 | [diff] [blame] | 1333 | struct list_head dead_roots; |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 1334 | struct list_head caching_block_groups; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1335 | |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 1336 | spinlock_t delayed_iput_lock; |
| 1337 | struct list_head delayed_iputs; |
| 1338 | |
Jan Schmidt | f29021b | 2012-05-16 17:55:38 +0200 | [diff] [blame] | 1339 | /* this protects tree_mod_seq_list */ |
| 1340 | spinlock_t tree_mod_seq_lock; |
| 1341 | atomic_t tree_mod_seq; |
| 1342 | struct list_head tree_mod_seq_list; |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 1343 | struct seq_list tree_mod_seq_elem; |
Jan Schmidt | f29021b | 2012-05-16 17:55:38 +0200 | [diff] [blame] | 1344 | |
| 1345 | /* this protects tree_mod_log */ |
| 1346 | rwlock_t tree_mod_log_lock; |
| 1347 | struct rb_root tree_mod_log; |
| 1348 | |
Chris Mason | cb03c74 | 2008-05-15 16:15:45 -0400 | [diff] [blame] | 1349 | atomic_t nr_async_submits; |
Chris Mason | 8c8bee1 | 2008-09-29 11:19:10 -0400 | [diff] [blame] | 1350 | atomic_t async_submit_draining; |
Chris Mason | 0986fe9e | 2008-08-15 15:34:15 -0400 | [diff] [blame] | 1351 | atomic_t nr_async_bios; |
Chris Mason | 771ed68 | 2008-11-06 22:02:51 -0500 | [diff] [blame] | 1352 | atomic_t async_delalloc_pages; |
Josef Bacik | a4abeea | 2011-04-11 17:25:13 -0400 | [diff] [blame] | 1353 | atomic_t open_ioctl_trans; |
Chris Mason | ce9adaa | 2008-04-09 16:28:12 -0400 | [diff] [blame] | 1354 | |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1355 | /* |
Chris Mason | 3eaa288 | 2008-07-24 11:57:52 -0400 | [diff] [blame] | 1356 | * this is used by the balancing code to wait for all the pending |
| 1357 | * ordered extents |
| 1358 | */ |
| 1359 | spinlock_t ordered_extent_lock; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1360 | |
| 1361 | /* |
| 1362 | * all of the data=ordered extents pending writeback |
| 1363 | * these can span multiple transactions and basically include |
| 1364 | * every dirty data page that isn't from nodatacow |
| 1365 | */ |
Chris Mason | 3eaa288 | 2008-07-24 11:57:52 -0400 | [diff] [blame] | 1366 | struct list_head ordered_extents; |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1367 | |
| 1368 | /* |
| 1369 | * all of the inodes that have delalloc bytes. It is possible for |
| 1370 | * this list to be empty even when there is still dirty data=ordered |
| 1371 | * extents waiting to finish IO. |
| 1372 | */ |
Chris Mason | ea8c281 | 2008-08-04 23:17:27 -0400 | [diff] [blame] | 1373 | struct list_head delalloc_inodes; |
Chris Mason | 3eaa288 | 2008-07-24 11:57:52 -0400 | [diff] [blame] | 1374 | |
| 1375 | /* |
Chris Mason | 5a3f23d | 2009-03-31 13:27:11 -0400 | [diff] [blame] | 1376 | * special rename and truncate targets that must be on disk before |
| 1377 | * we're allowed to commit. This is basically the ext3 style |
| 1378 | * data=ordered list. |
| 1379 | */ |
| 1380 | struct list_head ordered_operations; |
| 1381 | |
| 1382 | /* |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1383 | * there is a pool of worker threads for checksumming during writes |
| 1384 | * and a pool for checksumming after reads. This is because readers |
| 1385 | * can run with FS locks held, and the writers may be waiting for |
| 1386 | * those locks. We don't want ordering in the pending list to cause |
| 1387 | * deadlocks, and so the two are serviced separately. |
Chris Mason | 1cc127b | 2008-06-12 14:46:17 -0400 | [diff] [blame] | 1388 | * |
| 1389 | * A third pool does submit_bio to avoid deadlocking with the other |
| 1390 | * two |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1391 | */ |
Chris Mason | 61d92c3 | 2009-10-02 19:11:56 -0400 | [diff] [blame] | 1392 | struct btrfs_workers generic_worker; |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1393 | struct btrfs_workers workers; |
Chris Mason | 771ed68 | 2008-11-06 22:02:51 -0500 | [diff] [blame] | 1394 | struct btrfs_workers delalloc_workers; |
Miao Xie | 8ccf6f19 | 2012-10-25 09:28:04 +0000 | [diff] [blame] | 1395 | struct btrfs_workers flush_workers; |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1396 | struct btrfs_workers endio_workers; |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 1397 | struct btrfs_workers endio_meta_workers; |
Chris Mason | cad321a | 2008-12-17 14:51:42 -0500 | [diff] [blame] | 1398 | struct btrfs_workers endio_meta_write_workers; |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 1399 | struct btrfs_workers endio_write_workers; |
Josef Bacik | 0cb59c9 | 2010-07-02 12:14:14 -0400 | [diff] [blame] | 1400 | struct btrfs_workers endio_freespace_worker; |
Chris Mason | 1cc127b | 2008-06-12 14:46:17 -0400 | [diff] [blame] | 1401 | struct btrfs_workers submit_workers; |
Josef Bacik | bab39bf | 2011-06-30 14:42:28 -0400 | [diff] [blame] | 1402 | struct btrfs_workers caching_workers; |
Arne Jansen | 90519d6 | 2011-05-23 14:30:00 +0200 | [diff] [blame] | 1403 | struct btrfs_workers readahead_workers; |
Josef Bacik | bab39bf | 2011-06-30 14:42:28 -0400 | [diff] [blame] | 1404 | |
Chris Mason | 247e743 | 2008-07-17 12:53:51 -0400 | [diff] [blame] | 1405 | /* |
| 1406 | * fixup workers take dirty pages that didn't properly go through |
| 1407 | * the cow mechanism and make them safe to write. It happens |
| 1408 | * for the sys_munmap function call path |
| 1409 | */ |
| 1410 | struct btrfs_workers fixup_workers; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1411 | struct btrfs_workers delayed_workers; |
Chris Mason | a74a4b9 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 1412 | struct task_struct *transaction_kthread; |
| 1413 | struct task_struct *cleaner_kthread; |
Chris Mason | 4543df7 | 2008-06-11 21:47:56 -0400 | [diff] [blame] | 1414 | int thread_pool_size; |
Chris Mason | 8b71284 | 2008-06-11 16:50:36 -0400 | [diff] [blame] | 1415 | |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 1416 | struct kobject super_kobj; |
| 1417 | struct completion kobj_unregister; |
Chris Mason | e66f709 | 2007-04-20 13:16:02 -0400 | [diff] [blame] | 1418 | int do_barriers; |
Chris Mason | facda1e | 2007-06-08 18:11:48 -0400 | [diff] [blame] | 1419 | int closing; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1420 | int log_root_recovering; |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 1421 | int enospc_unlink; |
Josef Bacik | a4abeea | 2011-04-11 17:25:13 -0400 | [diff] [blame] | 1422 | int trans_no_join; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1423 | |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 1424 | u64 total_pinned; |
Chris Mason | b947343 | 2009-03-13 11:00:37 -0400 | [diff] [blame] | 1425 | |
| 1426 | /* protected by the delalloc lock, used to keep from writing |
| 1427 | * metadata until there is a nice batch |
| 1428 | */ |
| 1429 | u64 dirty_metadata_bytes; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1430 | struct list_head dirty_cowonly_roots; |
| 1431 | |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 1432 | struct btrfs_fs_devices *fs_devices; |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 1433 | |
| 1434 | /* |
| 1435 | * the space_info list is almost entirely read only. It only changes |
| 1436 | * when we add a new raid type to the FS, and that happens |
| 1437 | * very rarely. RCU is used to protect it. |
| 1438 | */ |
Chris Mason | 6324fbf | 2008-03-24 15:01:59 -0400 | [diff] [blame] | 1439 | struct list_head space_info; |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 1440 | |
Li Zefan | b4d7c3c | 2012-07-09 20:21:07 -0600 | [diff] [blame] | 1441 | struct btrfs_space_info *data_sinfo; |
| 1442 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1443 | struct reloc_control *reloc_ctl; |
| 1444 | |
Chris Mason | 1832a6d | 2007-12-21 16:27:21 -0500 | [diff] [blame] | 1445 | spinlock_t delalloc_lock; |
| 1446 | u64 delalloc_bytes; |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 1447 | |
| 1448 | /* data_alloc_cluster is only used in ssd mode */ |
| 1449 | struct btrfs_free_cluster data_alloc_cluster; |
| 1450 | |
| 1451 | /* all metadata allocations go through this cluster */ |
| 1452 | struct btrfs_free_cluster meta_alloc_cluster; |
Chris Mason | d18a2c4 | 2008-04-04 15:40:00 -0400 | [diff] [blame] | 1453 | |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 1454 | /* auto defrag inodes go here */ |
| 1455 | spinlock_t defrag_inodes_lock; |
| 1456 | struct rb_root defrag_inodes; |
| 1457 | atomic_t defrag_running; |
| 1458 | |
Ilya Dryomov | a46d11a | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1459 | /* |
| 1460 | * these three are in extended format (availability of single |
| 1461 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other |
| 1462 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) |
| 1463 | */ |
Chris Mason | d18a2c4 | 2008-04-04 15:40:00 -0400 | [diff] [blame] | 1464 | u64 avail_data_alloc_bits; |
| 1465 | u64 avail_metadata_alloc_bits; |
| 1466 | u64 avail_system_alloc_bits; |
Chris Mason | 788f20e | 2008-04-28 15:29:42 -0400 | [diff] [blame] | 1467 | |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1468 | /* restriper state */ |
| 1469 | spinlock_t balance_lock; |
| 1470 | struct mutex balance_mutex; |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 1471 | atomic_t balance_running; |
| 1472 | atomic_t balance_pause_req; |
Ilya Dryomov | a7e99c6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 1473 | atomic_t balance_cancel_req; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1474 | struct btrfs_balance_control *balance_ctl; |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 1475 | wait_queue_head_t balance_wait_q; |
Ilya Dryomov | c9e9f97 | 2012-01-16 22:04:47 +0200 | [diff] [blame] | 1476 | |
Josef Bacik | 97e728d | 2009-04-21 17:40:57 -0400 | [diff] [blame] | 1477 | unsigned data_chunk_allocations; |
| 1478 | unsigned metadata_ratio; |
| 1479 | |
Chris Mason | 788f20e | 2008-04-28 15:29:42 -0400 | [diff] [blame] | 1480 | void *bdev_holder; |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 1481 | |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 1482 | /* private scrub information */ |
| 1483 | struct mutex scrub_lock; |
| 1484 | atomic_t scrubs_running; |
| 1485 | atomic_t scrub_pause_req; |
| 1486 | atomic_t scrubs_paused; |
| 1487 | atomic_t scrub_cancel_req; |
| 1488 | wait_queue_head_t scrub_pause_wait; |
| 1489 | struct rw_semaphore scrub_super_lock; |
| 1490 | int scrub_workers_refcnt; |
| 1491 | struct btrfs_workers scrub_workers; |
Stefan Behrens | ff023aa | 2012-11-06 11:43:11 +0100 | [diff] [blame] | 1492 | struct btrfs_workers scrub_wr_completion_workers; |
| 1493 | struct btrfs_workers scrub_nocow_workers; |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 1494 | |
Stefan Behrens | 21adbd5 | 2011-11-09 13:44:05 +0100 | [diff] [blame] | 1495 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
| 1496 | u32 check_integrity_print_mask; |
| 1497 | #endif |
Arne Jansen | 416ac51 | 2011-09-13 12:56:09 +0200 | [diff] [blame] | 1498 | /* |
| 1499 | * quota information |
| 1500 | */ |
| 1501 | unsigned int quota_enabled:1; |
| 1502 | |
| 1503 | /* |
| 1504 | * quota_enabled only changes state after a commit. This holds the |
| 1505 | * next state. |
| 1506 | */ |
| 1507 | unsigned int pending_quota_state:1; |
| 1508 | |
| 1509 | /* is qgroup tracking in a consistent state? */ |
| 1510 | u64 qgroup_flags; |
| 1511 | |
| 1512 | /* holds configuration and tracking. Protected by qgroup_lock */ |
| 1513 | struct rb_root qgroup_tree; |
| 1514 | spinlock_t qgroup_lock; |
| 1515 | |
| 1516 | /* list of dirty qgroups to be written at next commit */ |
| 1517 | struct list_head dirty_qgroups; |
| 1518 | |
| 1519 | /* used by btrfs_qgroup_record_ref for an efficient tree traversal */ |
| 1520 | u64 qgroup_seq; |
Stefan Behrens | 21adbd5 | 2011-11-09 13:44:05 +0100 | [diff] [blame] | 1521 | |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 1522 | /* filesystem state */ |
| 1523 | u64 fs_state; |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1524 | |
| 1525 | struct btrfs_delayed_root *delayed_root; |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 1526 | |
Arne Jansen | 90519d6 | 2011-05-23 14:30:00 +0200 | [diff] [blame] | 1527 | /* readahead tree */ |
| 1528 | spinlock_t reada_lock; |
| 1529 | struct radix_tree_root reada_tree; |
Chris Mason | 531f4b1a | 2011-11-06 03:05:08 -0500 | [diff] [blame] | 1530 | |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 1531 | /* next backup root to be overwritten */ |
| 1532 | int backup_root_index; |
Stefan Behrens | 5af3e8c | 2012-08-01 18:56:49 +0200 | [diff] [blame] | 1533 | |
| 1534 | int num_tolerated_disk_barrier_failures; |
Stefan Behrens | e922e08 | 2012-11-05 17:26:40 +0100 | [diff] [blame] | 1535 | |
| 1536 | /* device replace state */ |
| 1537 | struct btrfs_dev_replace dev_replace; |
Stefan Behrens | 5ac00ad | 2012-11-05 17:54:08 +0100 | [diff] [blame] | 1538 | |
| 1539 | atomic_t mutually_exclusive_operation_running; |
Yan | 324ae4d | 2007-11-16 14:57:08 -0500 | [diff] [blame] | 1540 | }; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1541 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1542 | /* |
| 1543 | * 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] | 1544 | * and for the extent tree extent_root root. |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1545 | */ |
| 1546 | struct btrfs_root { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1547 | struct extent_buffer *node; |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 1548 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1549 | struct extent_buffer *commit_root; |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1550 | struct btrfs_root *log_root; |
Zheng Yan | 1a40e23 | 2008-09-26 10:09:34 -0400 | [diff] [blame] | 1551 | struct btrfs_root *reloc_root; |
Yan Zheng | 31153d8 | 2008-07-28 15:32:19 -0400 | [diff] [blame] | 1552 | |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1553 | struct btrfs_root_item root_item; |
| 1554 | struct btrfs_key root_key; |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1555 | struct btrfs_fs_info *fs_info; |
Chris Mason | d0c803c | 2008-09-11 16:17:57 -0400 | [diff] [blame] | 1556 | struct extent_io_tree dirty_log_pages; |
| 1557 | |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 1558 | struct kobject root_kobj; |
| 1559 | struct completion kobj_unregister; |
Chris Mason | a213501 | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 1560 | struct mutex objectid_mutex; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1561 | |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 1562 | spinlock_t accounting_lock; |
| 1563 | struct btrfs_block_rsv *block_rsv; |
| 1564 | |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1565 | /* free ino cache stuff */ |
| 1566 | struct mutex fs_commit_mutex; |
| 1567 | struct btrfs_free_space_ctl *free_ino_ctl; |
| 1568 | enum btrfs_caching_type cached; |
| 1569 | spinlock_t cache_lock; |
| 1570 | wait_queue_head_t cache_wait; |
| 1571 | struct btrfs_free_space_ctl *free_ino_pinned; |
| 1572 | u64 cache_progress; |
Li Zefan | 82d5902 | 2011-04-20 10:33:24 +0800 | [diff] [blame] | 1573 | struct inode *cache_inode; |
Li Zefan | 581bb05 | 2011-04-20 10:06:11 +0800 | [diff] [blame] | 1574 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 1575 | struct mutex log_mutex; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1576 | wait_queue_head_t log_writer_wait; |
| 1577 | wait_queue_head_t log_commit_wait[2]; |
| 1578 | atomic_t log_writers; |
| 1579 | atomic_t log_commit[2]; |
Miao Xie | 2ecb792 | 2012-09-06 04:04:27 -0600 | [diff] [blame] | 1580 | atomic_t log_batch; |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 1581 | unsigned long log_transid; |
Chris Mason | 257c62e | 2009-10-13 13:21:08 -0400 | [diff] [blame] | 1582 | unsigned long last_log_commit; |
Josef Bacik | ff782e0 | 2009-10-08 15:30:04 -0400 | [diff] [blame] | 1583 | pid_t log_start_pid; |
| 1584 | bool log_multiple_pids; |
Chris Mason | ea8c281 | 2008-08-04 23:17:27 -0400 | [diff] [blame] | 1585 | |
Chris Mason | 0f7d52f | 2007-04-09 10:42:37 -0400 | [diff] [blame] | 1586 | u64 objectid; |
| 1587 | u64 last_trans; |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1588 | |
| 1589 | /* data allocations are done in sectorsize units */ |
| 1590 | u32 sectorsize; |
| 1591 | |
| 1592 | /* node allocations are done in nodesize units */ |
| 1593 | u32 nodesize; |
| 1594 | |
| 1595 | /* leaf allocations are done in leafsize units */ |
| 1596 | u32 leafsize; |
| 1597 | |
Chris Mason | 87ee04e | 2007-11-30 11:30:34 -0500 | [diff] [blame] | 1598 | u32 stripesize; |
| 1599 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1600 | u32 type; |
Yan, Zheng | 13a8a7c | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 1601 | |
| 1602 | u64 highest_objectid; |
Chris Mason | 7585717 | 2011-06-13 20:00:16 -0400 | [diff] [blame] | 1603 | |
| 1604 | /* btrfs_record_root_in_trans is a multi-step process, |
| 1605 | * and it can race with the balancing code. But the |
| 1606 | * race is very small, and only the first time the root |
| 1607 | * is added to each transaction. So in_trans_setup |
| 1608 | * is used to tell us when more checks are required |
| 1609 | */ |
| 1610 | unsigned long in_trans_setup; |
Chris Mason | 9f3a742 | 2007-08-07 15:52:19 -0400 | [diff] [blame] | 1611 | int ref_cows; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1612 | int track_dirty; |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 1613 | int in_radix; |
| 1614 | |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 1615 | u64 defrag_trans_start; |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 1616 | struct btrfs_key defrag_progress; |
Chris Mason | 0ef3e66 | 2008-05-24 14:04:53 -0400 | [diff] [blame] | 1617 | struct btrfs_key defrag_max; |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 1618 | int defrag_running; |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 1619 | char *name; |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1620 | |
| 1621 | /* the dirty list is only used by non-reference counted roots */ |
| 1622 | struct list_head dirty_list; |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 1623 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1624 | struct list_head root_list; |
| 1625 | |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 1626 | spinlock_t orphan_lock; |
Josef Bacik | 8a35d95 | 2012-05-23 14:26:42 -0400 | [diff] [blame] | 1627 | atomic_t orphan_inodes; |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 1628 | struct btrfs_block_rsv *orphan_block_rsv; |
| 1629 | int orphan_item_inserted; |
| 1630 | int orphan_cleanup_state; |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1631 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1632 | spinlock_t inode_lock; |
| 1633 | /* red-black tree that keeps track of in-memory inodes */ |
| 1634 | struct rb_root inode_tree; |
| 1635 | |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1636 | /* |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 1637 | * radix tree that keeps track of delayed nodes of every inode, |
| 1638 | * protected by inode_lock |
| 1639 | */ |
| 1640 | struct radix_tree_root delayed_nodes_tree; |
| 1641 | /* |
Chris Mason | 3394e16 | 2008-11-17 20:42:26 -0500 | [diff] [blame] | 1642 | * right now this just gets used so that a root has its own devid |
| 1643 | * for stat. It may be used for more later |
| 1644 | */ |
Al Viro | 0ee5dc6 | 2011-07-07 15:44:25 -0400 | [diff] [blame] | 1645 | dev_t anon_dev; |
Liu Bo | f1ebcc7 | 2011-11-14 20:48:06 -0500 | [diff] [blame] | 1646 | |
| 1647 | int force_cow; |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 1648 | |
Anand Jain | 5f3ab90 | 2012-12-07 09:28:54 +0000 | [diff] [blame] | 1649 | spinlock_t root_item_lock; |
Chris Mason | 62e2749 | 2007-03-15 12:56:47 -0400 | [diff] [blame] | 1650 | }; |
| 1651 | |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 1652 | struct btrfs_ioctl_defrag_range_args { |
| 1653 | /* start of the defrag operation */ |
| 1654 | __u64 start; |
| 1655 | |
| 1656 | /* number of bytes to defrag, use (u64)-1 to say all */ |
| 1657 | __u64 len; |
| 1658 | |
| 1659 | /* |
| 1660 | * flags for the operation, which can include turning |
| 1661 | * on compression for this one defrag |
| 1662 | */ |
| 1663 | __u64 flags; |
| 1664 | |
| 1665 | /* |
| 1666 | * any extent bigger than this will be considered |
| 1667 | * already defragged. Use 0 to take the kernel default |
| 1668 | * Use 1 to say every single extent must be rewritten |
| 1669 | */ |
| 1670 | __u32 extent_thresh; |
| 1671 | |
| 1672 | /* |
| 1673 | * which compression method to use if turning on compression |
| 1674 | * for this defrag operation. If unspecified, zlib will |
| 1675 | * be used |
| 1676 | */ |
| 1677 | __u32 compress_type; |
| 1678 | |
| 1679 | /* spare for later */ |
| 1680 | __u32 unused[4]; |
| 1681 | }; |
| 1682 | |
| 1683 | |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1684 | /* |
| 1685 | * inode items have the data typically returned from stat and store other |
| 1686 | * info about object characteristics. There is one for every file and dir in |
| 1687 | * the FS |
| 1688 | */ |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1689 | #define BTRFS_INODE_ITEM_KEY 1 |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1690 | #define BTRFS_INODE_REF_KEY 12 |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 1691 | #define BTRFS_INODE_EXTREF_KEY 13 |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1692 | #define BTRFS_XATTR_ITEM_KEY 24 |
| 1693 | #define BTRFS_ORPHAN_ITEM_KEY 48 |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1694 | /* reserve 2-15 close to the inode for later flexibility */ |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1695 | |
| 1696 | /* |
| 1697 | * dir items are the name -> inode pointers in a directory. There is one |
| 1698 | * for every name in a directory. |
| 1699 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1700 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
| 1701 | #define BTRFS_DIR_LOG_INDEX_KEY 72 |
| 1702 | #define BTRFS_DIR_ITEM_KEY 84 |
| 1703 | #define BTRFS_DIR_INDEX_KEY 96 |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1704 | /* |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1705 | * extent data is for file data |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1706 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1707 | #define BTRFS_EXTENT_DATA_KEY 108 |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 1708 | |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1709 | /* |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 1710 | * extent csums are stored in a separate tree and hold csums for |
| 1711 | * an entire extent on disk. |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 1712 | */ |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 1713 | #define BTRFS_EXTENT_CSUM_KEY 128 |
Chris Mason | f254e52 | 2007-03-29 15:15:27 -0400 | [diff] [blame] | 1714 | |
| 1715 | /* |
Wu Fengguang | d4a7894 | 2009-04-02 16:46:06 -0400 | [diff] [blame] | 1716 | * root items point to tree roots. They are typically in the root |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1717 | * tree used by the super block to find all the other trees |
| 1718 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1719 | #define BTRFS_ROOT_ITEM_KEY 132 |
| 1720 | |
| 1721 | /* |
| 1722 | * root backrefs tie subvols and snapshots to the directory entries that |
| 1723 | * reference them |
| 1724 | */ |
| 1725 | #define BTRFS_ROOT_BACKREF_KEY 144 |
| 1726 | |
| 1727 | /* |
| 1728 | * root refs make a fast index for listing all of the snapshots and |
| 1729 | * subvolumes referenced by a given root. They point directly to the |
| 1730 | * directory item in the root that references the subvol |
| 1731 | */ |
| 1732 | #define BTRFS_ROOT_REF_KEY 156 |
| 1733 | |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1734 | /* |
| 1735 | * extent items are in the extent map tree. These record which blocks |
| 1736 | * are used, and how many references there are to each block |
| 1737 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1738 | #define BTRFS_EXTENT_ITEM_KEY 168 |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 1739 | |
| 1740 | #define BTRFS_TREE_BLOCK_REF_KEY 176 |
| 1741 | |
| 1742 | #define BTRFS_EXTENT_DATA_REF_KEY 178 |
| 1743 | |
| 1744 | #define BTRFS_EXTENT_REF_V0_KEY 180 |
| 1745 | |
| 1746 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 |
| 1747 | |
| 1748 | #define BTRFS_SHARED_DATA_REF_KEY 184 |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1749 | |
| 1750 | /* |
| 1751 | * block groups give us hints into the extent allocation trees. Which |
| 1752 | * blocks are free etc etc |
| 1753 | */ |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1754 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1755 | |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 1756 | #define BTRFS_DEV_EXTENT_KEY 204 |
| 1757 | #define BTRFS_DEV_ITEM_KEY 216 |
| 1758 | #define BTRFS_CHUNK_ITEM_KEY 228 |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1759 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 1760 | /* |
| 1761 | * Records the overall state of the qgroups. |
| 1762 | * There's only one instance of this key present, |
| 1763 | * (0, BTRFS_QGROUP_STATUS_KEY, 0) |
| 1764 | */ |
| 1765 | #define BTRFS_QGROUP_STATUS_KEY 240 |
| 1766 | /* |
| 1767 | * Records the currently used space of the qgroup. |
| 1768 | * One key per qgroup, (0, BTRFS_QGROUP_INFO_KEY, qgroupid). |
| 1769 | */ |
| 1770 | #define BTRFS_QGROUP_INFO_KEY 242 |
| 1771 | /* |
| 1772 | * Contains the user configured limits for the qgroup. |
| 1773 | * One key per qgroup, (0, BTRFS_QGROUP_LIMIT_KEY, qgroupid). |
| 1774 | */ |
| 1775 | #define BTRFS_QGROUP_LIMIT_KEY 244 |
| 1776 | /* |
| 1777 | * Records the child-parent relationship of qgroups. For |
| 1778 | * each relation, 2 keys are present: |
| 1779 | * (childid, BTRFS_QGROUP_RELATION_KEY, parentid) |
| 1780 | * (parentid, BTRFS_QGROUP_RELATION_KEY, childid) |
| 1781 | */ |
| 1782 | #define BTRFS_QGROUP_RELATION_KEY 246 |
| 1783 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 1784 | #define BTRFS_BALANCE_ITEM_KEY 248 |
| 1785 | |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 1786 | /* |
Stefan Behrens | 733f4fb | 2012-05-25 16:06:10 +0200 | [diff] [blame] | 1787 | * Persistantly stores the io stats in the device tree. |
| 1788 | * One key for all stats, (0, BTRFS_DEV_STATS_KEY, devid). |
| 1789 | */ |
| 1790 | #define BTRFS_DEV_STATS_KEY 249 |
| 1791 | |
| 1792 | /* |
Stefan Behrens | a2bff64 | 2012-11-05 17:32:20 +0100 | [diff] [blame] | 1793 | * Persistantly stores the device replace state in the device tree. |
| 1794 | * The key is built like this: (0, BTRFS_DEV_REPLACE_KEY, 0). |
| 1795 | */ |
| 1796 | #define BTRFS_DEV_REPLACE_KEY 250 |
| 1797 | |
| 1798 | /* |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1799 | * string items are for debugging. They just store a short string of |
| 1800 | * data in the FS |
| 1801 | */ |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1802 | #define BTRFS_STRING_ITEM_KEY 253 |
| 1803 | |
David Sterba | 0942caa | 2011-06-28 15:10:37 +0000 | [diff] [blame] | 1804 | /* |
| 1805 | * Flags for mount options. |
| 1806 | * |
| 1807 | * Note: don't forget to add new options to btrfs_show_options() |
| 1808 | */ |
Chris Mason | 21ad10c | 2008-01-09 09:23:21 -0500 | [diff] [blame] | 1809 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
| 1810 | #define BTRFS_MOUNT_NODATACOW (1 << 1) |
| 1811 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) |
Chris Mason | e18e480 | 2008-01-18 10:54:22 -0500 | [diff] [blame] | 1812 | #define BTRFS_MOUNT_SSD (1 << 3) |
Chris Mason | dfe2502 | 2008-05-13 13:46:40 -0400 | [diff] [blame] | 1813 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 1814 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
Sage Weil | 3a5e140 | 2009-04-02 16:49:40 -0400 | [diff] [blame] | 1815 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
Sage Weil | dccae99 | 2009-04-02 16:59:01 -0400 | [diff] [blame] | 1816 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
Chris Mason | 451d758 | 2009-06-09 20:28:34 -0400 | [diff] [blame] | 1817 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
Chris Mason | c289811 | 2009-06-10 09:51:32 -0400 | [diff] [blame] | 1818 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
Christoph Hellwig | e244a0a | 2009-10-14 09:24:59 -0400 | [diff] [blame] | 1819 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
Chris Mason | a555f81 | 2010-01-28 16:18:15 -0500 | [diff] [blame] | 1820 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 1821 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
Josef Bacik | 88c2ba3 | 2010-09-21 14:21:34 -0400 | [diff] [blame] | 1822 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
Sage Weil | 4260f7c | 2010-10-29 15:46:43 -0400 | [diff] [blame] | 1823 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
Chris Mason | 9143565 | 2011-02-16 13:10:41 -0500 | [diff] [blame] | 1824 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 1825 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
Chris Mason | 4b9465c | 2011-06-03 09:36:29 -0400 | [diff] [blame] | 1826 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 1827 | #define BTRFS_MOUNT_RECOVERY (1 << 18) |
Ilya Dryomov | 9555c6c | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 1828 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
Chris Mason | c126dea | 2012-01-16 15:27:58 -0500 | [diff] [blame] | 1829 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
| 1830 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) |
Jeff Mahoney | 8c34293 | 2011-10-03 23:22:31 -0400 | [diff] [blame] | 1831 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
Chris Mason | b6cda9b | 2007-12-14 15:30:32 -0500 | [diff] [blame] | 1832 | |
| 1833 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
| 1834 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) |
| 1835 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ |
| 1836 | BTRFS_MOUNT_##opt) |
Yan | b98b676 | 2008-01-08 15:54:37 -0500 | [diff] [blame] | 1837 | /* |
| 1838 | * Inode flags |
| 1839 | */ |
Yan | fdebe2b | 2008-01-14 13:26:08 -0500 | [diff] [blame] | 1840 | #define BTRFS_INODE_NODATASUM (1 << 0) |
| 1841 | #define BTRFS_INODE_NODATACOW (1 << 1) |
| 1842 | #define BTRFS_INODE_READONLY (1 << 2) |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 1843 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 1844 | #define BTRFS_INODE_PREALLOC (1 << 4) |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 1845 | #define BTRFS_INODE_SYNC (1 << 5) |
| 1846 | #define BTRFS_INODE_IMMUTABLE (1 << 6) |
| 1847 | #define BTRFS_INODE_APPEND (1 << 7) |
| 1848 | #define BTRFS_INODE_NODUMP (1 << 8) |
| 1849 | #define BTRFS_INODE_NOATIME (1 << 9) |
| 1850 | #define BTRFS_INODE_DIRSYNC (1 << 10) |
Liu Bo | 75e7cb7 | 2011-03-22 10:12:20 +0000 | [diff] [blame] | 1851 | #define BTRFS_INODE_COMPRESS (1 << 11) |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 1852 | |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 1853 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
| 1854 | |
Chris Mason | cfed81a | 2012-03-03 07:40:03 -0500 | [diff] [blame] | 1855 | struct btrfs_map_token { |
| 1856 | struct extent_buffer *eb; |
| 1857 | char *kaddr; |
| 1858 | unsigned long offset; |
| 1859 | }; |
| 1860 | |
| 1861 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
| 1862 | { |
Josef Bacik | ad91455 | 2012-10-15 13:39:33 -0400 | [diff] [blame] | 1863 | token->kaddr = NULL; |
Chris Mason | cfed81a | 2012-03-03 07:40:03 -0500 | [diff] [blame] | 1864 | } |
| 1865 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1866 | /* some macros to generate set/get funcs for the struct fields. This |
| 1867 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
| 1868 | * one for u8: |
| 1869 | */ |
| 1870 | #define le8_to_cpu(v) (v) |
| 1871 | #define cpu_to_le8(v) (v) |
| 1872 | #define __le8 u8 |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1873 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1874 | #define read_eb_member(eb, ptr, type, member, result) ( \ |
| 1875 | read_extent_buffer(eb, (char *)(result), \ |
| 1876 | ((unsigned long)(ptr)) + \ |
| 1877 | offsetof(type, member), \ |
| 1878 | sizeof(((type *)0)->member))) |
| 1879 | |
| 1880 | #define write_eb_member(eb, ptr, type, member, result) ( \ |
| 1881 | write_extent_buffer(eb, (char *)(result), \ |
| 1882 | ((unsigned long)(ptr)) + \ |
| 1883 | offsetof(type, member), \ |
| 1884 | sizeof(((type *)0)->member))) |
| 1885 | |
Li Zefan | 18077bb | 2012-07-09 20:22:35 -0600 | [diff] [blame] | 1886 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
| 1887 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ |
| 1888 | unsigned long off, \ |
| 1889 | struct btrfs_map_token *token); \ |
| 1890 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ |
| 1891 | unsigned long off, u##bits val, \ |
| 1892 | struct btrfs_map_token *token); \ |
| 1893 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ |
| 1894 | unsigned long off) \ |
| 1895 | { \ |
| 1896 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ |
| 1897 | } \ |
| 1898 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ |
| 1899 | unsigned long off, u##bits val) \ |
| 1900 | { \ |
| 1901 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ |
| 1902 | } |
| 1903 | |
| 1904 | DECLARE_BTRFS_SETGET_BITS(8) |
| 1905 | DECLARE_BTRFS_SETGET_BITS(16) |
| 1906 | DECLARE_BTRFS_SETGET_BITS(32) |
| 1907 | DECLARE_BTRFS_SETGET_BITS(64) |
| 1908 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1909 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
Li Zefan | 18077bb | 2012-07-09 20:22:35 -0600 | [diff] [blame] | 1910 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
| 1911 | { \ |
| 1912 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 1913 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ |
| 1914 | } \ |
| 1915 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ |
| 1916 | u##bits val) \ |
| 1917 | { \ |
| 1918 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 1919 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ |
| 1920 | } \ |
| 1921 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ |
| 1922 | struct btrfs_map_token *token) \ |
| 1923 | { \ |
| 1924 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 1925 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ |
| 1926 | } \ |
| 1927 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ |
| 1928 | type *s, u##bits val, \ |
| 1929 | struct btrfs_map_token *token) \ |
| 1930 | { \ |
| 1931 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ |
| 1932 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ |
| 1933 | } |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1934 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1935 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ |
| 1936 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ |
| 1937 | { \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 1938 | type *p = page_address(eb->pages[0]); \ |
David Miller | df68b8a | 2008-02-15 10:40:52 -0500 | [diff] [blame] | 1939 | u##bits res = le##bits##_to_cpu(p->member); \ |
Chris Mason | 810191f | 2007-10-15 16:18:55 -0400 | [diff] [blame] | 1940 | return res; \ |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1941 | } \ |
| 1942 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ |
| 1943 | u##bits val) \ |
| 1944 | { \ |
Chris Mason | 727011e | 2010-08-06 13:21:20 -0400 | [diff] [blame] | 1945 | type *p = page_address(eb->pages[0]); \ |
David Miller | df68b8a | 2008-02-15 10:40:52 -0500 | [diff] [blame] | 1946 | p->member = cpu_to_le##bits(val); \ |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 1947 | } |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1948 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 1949 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
| 1950 | static inline u##bits btrfs_##name(type *s) \ |
| 1951 | { \ |
| 1952 | return le##bits##_to_cpu(s->member); \ |
| 1953 | } \ |
| 1954 | static inline void btrfs_set_##name(type *s, u##bits val) \ |
| 1955 | { \ |
| 1956 | s->member = cpu_to_le##bits(val); \ |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 1957 | } |
| 1958 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1959 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
| 1960 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); |
| 1961 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
| 1962 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); |
| 1963 | 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] | 1964 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
| 1965 | start_offset, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1966 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
| 1967 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 1968 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
| 1969 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); |
| 1970 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 1971 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1972 | |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 1973 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
| 1974 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, |
| 1975 | total_bytes, 64); |
| 1976 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, |
| 1977 | bytes_used, 64); |
| 1978 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, |
| 1979 | io_align, 32); |
| 1980 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, |
| 1981 | io_width, 32); |
| 1982 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, |
| 1983 | sector_size, 32); |
| 1984 | 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] | 1985 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
| 1986 | dev_group, 32); |
| 1987 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, |
| 1988 | seek_speed, 8); |
| 1989 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, |
| 1990 | bandwidth, 8); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 1991 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
| 1992 | generation, 64); |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 1993 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 1994 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
| 1995 | { |
| 1996 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); |
| 1997 | } |
| 1998 | |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 1999 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
| 2000 | { |
| 2001 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); |
| 2002 | } |
| 2003 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2004 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2005 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
| 2006 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); |
| 2007 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); |
| 2008 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); |
| 2009 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); |
| 2010 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); |
| 2011 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); |
Chris Mason | 321aecc | 2008-04-16 10:49:51 -0400 | [diff] [blame] | 2012 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2013 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
| 2014 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); |
| 2015 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2016 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
| 2017 | { |
| 2018 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); |
| 2019 | } |
| 2020 | |
| 2021 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2022 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
| 2023 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, |
| 2024 | stripe_len, 64); |
| 2025 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, |
| 2026 | io_align, 32); |
| 2027 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, |
| 2028 | io_width, 32); |
| 2029 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, |
| 2030 | sector_size, 32); |
| 2031 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); |
| 2032 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, |
| 2033 | num_stripes, 16); |
Chris Mason | 321aecc | 2008-04-16 10:49:51 -0400 | [diff] [blame] | 2034 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
| 2035 | sub_stripes, 16); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2036 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
| 2037 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); |
| 2038 | |
| 2039 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, |
| 2040 | int nr) |
| 2041 | { |
| 2042 | unsigned long offset = (unsigned long)c; |
| 2043 | offset += offsetof(struct btrfs_chunk, stripe); |
| 2044 | offset += nr * sizeof(struct btrfs_stripe); |
| 2045 | return (struct btrfs_stripe *)offset; |
| 2046 | } |
| 2047 | |
Chris Mason | a443755 | 2008-04-18 10:29:38 -0400 | [diff] [blame] | 2048 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
| 2049 | { |
| 2050 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); |
| 2051 | } |
| 2052 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2053 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
| 2054 | struct btrfs_chunk *c, int nr) |
| 2055 | { |
| 2056 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); |
| 2057 | } |
| 2058 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2059 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
| 2060 | struct btrfs_chunk *c, int nr) |
| 2061 | { |
| 2062 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); |
| 2063 | } |
| 2064 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2065 | /* struct btrfs_block_group_item */ |
| 2066 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, |
| 2067 | used, 64); |
| 2068 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, |
| 2069 | used, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2070 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
| 2071 | struct btrfs_block_group_item, chunk_objectid, 64); |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2072 | |
| 2073 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2074 | struct btrfs_block_group_item, chunk_objectid, 64); |
| 2075 | BTRFS_SETGET_FUNCS(disk_block_group_flags, |
| 2076 | struct btrfs_block_group_item, flags, 64); |
| 2077 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, |
| 2078 | struct btrfs_block_group_item, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2079 | |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 2080 | /* struct btrfs_inode_ref */ |
| 2081 | 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] | 2082 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 2083 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 2084 | /* struct btrfs_inode_extref */ |
| 2085 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, |
| 2086 | parent_objectid, 64); |
| 2087 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, |
| 2088 | name_len, 16); |
| 2089 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); |
| 2090 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2091 | /* struct btrfs_inode_item */ |
| 2092 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 2093 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2094 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2095 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
Yan Zheng | a76a3cd | 2008-10-09 11:46:29 -0400 | [diff] [blame] | 2096 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2097 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
| 2098 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); |
| 2099 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); |
| 2100 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); |
| 2101 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2102 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2103 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2104 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2105 | static inline struct btrfs_timespec * |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2106 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2107 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2108 | unsigned long ptr = (unsigned long)inode_item; |
| 2109 | ptr += offsetof(struct btrfs_inode_item, atime); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2110 | return (struct btrfs_timespec *)ptr; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2111 | } |
| 2112 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2113 | static inline struct btrfs_timespec * |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2114 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2115 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2116 | unsigned long ptr = (unsigned long)inode_item; |
| 2117 | ptr += offsetof(struct btrfs_inode_item, mtime); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2118 | return (struct btrfs_timespec *)ptr; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2119 | } |
| 2120 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2121 | static inline struct btrfs_timespec * |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2122 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2123 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2124 | unsigned long ptr = (unsigned long)inode_item; |
| 2125 | ptr += offsetof(struct btrfs_inode_item, ctime); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2126 | return (struct btrfs_timespec *)ptr; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2127 | } |
| 2128 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2129 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
| 2130 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2131 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2132 | /* struct btrfs_dev_extent */ |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2133 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
| 2134 | chunk_tree, 64); |
| 2135 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, |
| 2136 | chunk_objectid, 64); |
| 2137 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, |
| 2138 | chunk_offset, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2139 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
| 2140 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2141 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
| 2142 | { |
| 2143 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); |
| 2144 | return (u8 *)((unsigned long)dev + ptr); |
| 2145 | } |
| 2146 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2147 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
| 2148 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, |
| 2149 | generation, 64); |
| 2150 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 2151 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2152 | 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] | 2153 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2154 | |
| 2155 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); |
| 2156 | |
| 2157 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, |
| 2158 | struct btrfs_tree_block_info *item, |
| 2159 | struct btrfs_disk_key *key) |
| 2160 | { |
| 2161 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
| 2162 | } |
| 2163 | |
| 2164 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, |
| 2165 | struct btrfs_tree_block_info *item, |
| 2166 | struct btrfs_disk_key *key) |
| 2167 | { |
| 2168 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
| 2169 | } |
| 2170 | |
| 2171 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
| 2172 | root, 64); |
| 2173 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, |
| 2174 | objectid, 64); |
| 2175 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, |
| 2176 | offset, 64); |
| 2177 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, |
| 2178 | count, 32); |
| 2179 | |
| 2180 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, |
| 2181 | count, 32); |
| 2182 | |
| 2183 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, |
| 2184 | type, 8); |
| 2185 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, |
| 2186 | offset, 64); |
| 2187 | |
| 2188 | static inline u32 btrfs_extent_inline_ref_size(int type) |
| 2189 | { |
| 2190 | if (type == BTRFS_TREE_BLOCK_REF_KEY || |
| 2191 | type == BTRFS_SHARED_BLOCK_REF_KEY) |
| 2192 | return sizeof(struct btrfs_extent_inline_ref); |
| 2193 | if (type == BTRFS_SHARED_DATA_REF_KEY) |
| 2194 | return sizeof(struct btrfs_shared_data_ref) + |
| 2195 | sizeof(struct btrfs_extent_inline_ref); |
| 2196 | if (type == BTRFS_EXTENT_DATA_REF_KEY) |
| 2197 | return sizeof(struct btrfs_extent_data_ref) + |
| 2198 | offsetof(struct btrfs_extent_inline_ref, offset); |
| 2199 | BUG(); |
| 2200 | return 0; |
| 2201 | } |
| 2202 | |
| 2203 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); |
| 2204 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, |
| 2205 | generation, 64); |
| 2206 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); |
| 2207 | 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] | 2208 | |
| 2209 | /* struct btrfs_node */ |
| 2210 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 2211 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2212 | |
| 2213 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2214 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2215 | unsigned long ptr; |
| 2216 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2217 | sizeof(struct btrfs_key_ptr) * nr; |
| 2218 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2219 | } |
| 2220 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2221 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
| 2222 | int nr, u64 val) |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2223 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2224 | unsigned long ptr; |
| 2225 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2226 | sizeof(struct btrfs_key_ptr) * nr; |
| 2227 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2228 | } |
| 2229 | |
Chris Mason | 74493f7 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 2230 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
| 2231 | { |
| 2232 | unsigned long ptr; |
| 2233 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2234 | sizeof(struct btrfs_key_ptr) * nr; |
| 2235 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); |
| 2236 | } |
| 2237 | |
| 2238 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, |
| 2239 | int nr, u64 val) |
| 2240 | { |
| 2241 | unsigned long ptr; |
| 2242 | ptr = offsetof(struct btrfs_node, ptrs) + |
| 2243 | sizeof(struct btrfs_key_ptr) * nr; |
| 2244 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); |
| 2245 | } |
| 2246 | |
Chris Mason | 810191f | 2007-10-15 16:18:55 -0400 | [diff] [blame] | 2247 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2248 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2249 | return offsetof(struct btrfs_node, ptrs) + |
| 2250 | sizeof(struct btrfs_key_ptr) * nr; |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 2251 | } |
| 2252 | |
Chris Mason | e644d02 | 2007-11-06 15:09:29 -0500 | [diff] [blame] | 2253 | void btrfs_node_key(struct extent_buffer *eb, |
| 2254 | struct btrfs_disk_key *disk_key, int nr); |
| 2255 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2256 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
| 2257 | struct btrfs_disk_key *disk_key, int nr) |
| 2258 | { |
| 2259 | unsigned long ptr; |
| 2260 | ptr = btrfs_node_key_ptr_offset(nr); |
| 2261 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, |
| 2262 | struct btrfs_key_ptr, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2263 | } |
| 2264 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2265 | /* struct btrfs_item */ |
| 2266 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); |
| 2267 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); |
| 2268 | |
| 2269 | static inline unsigned long btrfs_item_nr_offset(int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2270 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2271 | return offsetof(struct btrfs_leaf, items) + |
| 2272 | sizeof(struct btrfs_item) * nr; |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2273 | } |
| 2274 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2275 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
| 2276 | int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2277 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2278 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2279 | } |
| 2280 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2281 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
| 2282 | struct btrfs_item *item) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2283 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2284 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2285 | } |
| 2286 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2287 | 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] | 2288 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2289 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2290 | } |
| 2291 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2292 | 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] | 2293 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2294 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2295 | } |
| 2296 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2297 | 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] | 2298 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2299 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2300 | } |
| 2301 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2302 | static inline void btrfs_item_key(struct extent_buffer *eb, |
| 2303 | struct btrfs_disk_key *disk_key, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2304 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2305 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
| 2306 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2307 | } |
| 2308 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2309 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
| 2310 | struct btrfs_disk_key *disk_key, int nr) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2311 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2312 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
| 2313 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2314 | } |
| 2315 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2316 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
| 2317 | |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 2318 | /* |
| 2319 | * struct btrfs_root_ref |
| 2320 | */ |
| 2321 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); |
| 2322 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); |
| 2323 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); |
| 2324 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2325 | /* struct btrfs_dir_item */ |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 2326 | 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] | 2327 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
| 2328 | 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] | 2329 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2330 | |
| 2331 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
| 2332 | struct btrfs_dir_item *item, |
| 2333 | struct btrfs_disk_key *key) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2334 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2335 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2336 | } |
| 2337 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2338 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
| 2339 | struct btrfs_dir_item *item, |
| 2340 | struct btrfs_disk_key *key) |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2341 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2342 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
Chris Mason | 1e1d270 | 2007-03-15 19:03:33 -0400 | [diff] [blame] | 2343 | } |
| 2344 | |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 2345 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
| 2346 | num_entries, 64); |
| 2347 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, |
| 2348 | num_bitmaps, 64); |
| 2349 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, |
| 2350 | generation, 64); |
| 2351 | |
| 2352 | static inline void btrfs_free_space_key(struct extent_buffer *eb, |
| 2353 | struct btrfs_free_space_header *h, |
| 2354 | struct btrfs_disk_key *key) |
| 2355 | { |
| 2356 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); |
| 2357 | } |
| 2358 | |
| 2359 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, |
| 2360 | struct btrfs_free_space_header *h, |
| 2361 | struct btrfs_disk_key *key) |
| 2362 | { |
| 2363 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); |
| 2364 | } |
| 2365 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2366 | /* struct btrfs_disk_key */ |
| 2367 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, |
| 2368 | objectid, 64); |
| 2369 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); |
| 2370 | 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] | 2371 | |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2372 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
| 2373 | struct btrfs_disk_key *disk) |
| 2374 | { |
| 2375 | cpu->offset = le64_to_cpu(disk->offset); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2376 | cpu->type = disk->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2377 | cpu->objectid = le64_to_cpu(disk->objectid); |
| 2378 | } |
| 2379 | |
| 2380 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, |
| 2381 | struct btrfs_key *cpu) |
| 2382 | { |
| 2383 | disk->offset = cpu_to_le64(cpu->offset); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2384 | disk->type = cpu->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2385 | disk->objectid = cpu_to_le64(cpu->objectid); |
| 2386 | } |
| 2387 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2388 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
| 2389 | struct btrfs_key *key, int nr) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2390 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2391 | struct btrfs_disk_key disk_key; |
| 2392 | btrfs_node_key(eb, &disk_key, nr); |
| 2393 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2394 | } |
| 2395 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2396 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
| 2397 | struct btrfs_key *key, int nr) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2398 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2399 | struct btrfs_disk_key disk_key; |
| 2400 | btrfs_item_key(eb, &disk_key, nr); |
| 2401 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2402 | } |
| 2403 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2404 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
| 2405 | struct btrfs_dir_item *item, |
| 2406 | struct btrfs_key *key) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2407 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2408 | struct btrfs_disk_key disk_key; |
| 2409 | btrfs_dir_item_key(eb, item, &disk_key); |
| 2410 | btrfs_disk_key_to_cpu(key, &disk_key); |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2411 | } |
| 2412 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2413 | |
| 2414 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2415 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2416 | return key->type; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2417 | } |
| 2418 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2419 | 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] | 2420 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2421 | key->type = val; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2422 | } |
| 2423 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2424 | /* struct btrfs_header */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2425 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2426 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
| 2427 | generation, 64); |
| 2428 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); |
| 2429 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 2430 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2431 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
| 2432 | |
Chris Mason | 63b10fc | 2008-04-01 11:21:32 -0400 | [diff] [blame] | 2433 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
| 2434 | { |
| 2435 | return (btrfs_header_flags(eb) & flag) == flag; |
| 2436 | } |
| 2437 | |
| 2438 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) |
| 2439 | { |
| 2440 | u64 flags = btrfs_header_flags(eb); |
| 2441 | btrfs_set_header_flags(eb, flags | flag); |
| 2442 | return (flags & flag) == flag; |
| 2443 | } |
| 2444 | |
| 2445 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) |
| 2446 | { |
| 2447 | u64 flags = btrfs_header_flags(eb); |
| 2448 | btrfs_set_header_flags(eb, flags & ~flag); |
| 2449 | return (flags & flag) == flag; |
| 2450 | } |
| 2451 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2452 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
| 2453 | { |
| 2454 | u64 flags = btrfs_header_flags(eb); |
| 2455 | return flags >> BTRFS_BACKREF_REV_SHIFT; |
| 2456 | } |
| 2457 | |
| 2458 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, |
| 2459 | int rev) |
| 2460 | { |
| 2461 | u64 flags = btrfs_header_flags(eb); |
| 2462 | flags &= ~BTRFS_BACKREF_REV_MASK; |
| 2463 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; |
| 2464 | btrfs_set_header_flags(eb, flags); |
| 2465 | } |
| 2466 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2467 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2468 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2469 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
| 2470 | return (u8 *)ptr; |
Chris Mason | e2fa722 | 2007-03-12 16:22:34 -0400 | [diff] [blame] | 2471 | } |
| 2472 | |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 2473 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
| 2474 | { |
| 2475 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); |
| 2476 | return (u8 *)ptr; |
| 2477 | } |
| 2478 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2479 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
Chris Mason | 7518a23 | 2007-03-12 12:01:18 -0400 | [diff] [blame] | 2480 | { |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 2481 | return btrfs_header_level(eb) == 0; |
Chris Mason | 7518a23 | 2007-03-12 12:01:18 -0400 | [diff] [blame] | 2482 | } |
| 2483 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2484 | /* struct btrfs_root_item */ |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2485 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
| 2486 | generation, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2487 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2488 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
| 2489 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2490 | |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2491 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
| 2492 | generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2493 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
| 2494 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2495 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
| 2496 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2497 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2498 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
| 2499 | 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] | 2500 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
| 2501 | last_snapshot, 64); |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 2502 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
| 2503 | generation_v2, 64); |
| 2504 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, |
| 2505 | ctransid, 64); |
| 2506 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, |
| 2507 | otransid, 64); |
| 2508 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, |
| 2509 | stransid, 64); |
| 2510 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, |
| 2511 | rtransid, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2512 | |
Li Zefan | b83cc96 | 2010-12-20 16:04:08 +0800 | [diff] [blame] | 2513 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
| 2514 | { |
Al Viro | 6ed3cf2 | 2012-04-13 11:49:04 -0400 | [diff] [blame] | 2515 | 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] | 2516 | } |
| 2517 | |
Chris Mason | af31f5e | 2011-11-03 15:17:42 -0400 | [diff] [blame] | 2518 | /* struct btrfs_root_backup */ |
| 2519 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, |
| 2520 | tree_root, 64); |
| 2521 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, |
| 2522 | tree_root_gen, 64); |
| 2523 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, |
| 2524 | tree_root_level, 8); |
| 2525 | |
| 2526 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, |
| 2527 | chunk_root, 64); |
| 2528 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, |
| 2529 | chunk_root_gen, 64); |
| 2530 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, |
| 2531 | chunk_root_level, 8); |
| 2532 | |
| 2533 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, |
| 2534 | extent_root, 64); |
| 2535 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, |
| 2536 | extent_root_gen, 64); |
| 2537 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, |
| 2538 | extent_root_level, 8); |
| 2539 | |
| 2540 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, |
| 2541 | fs_root, 64); |
| 2542 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, |
| 2543 | fs_root_gen, 64); |
| 2544 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, |
| 2545 | fs_root_level, 8); |
| 2546 | |
| 2547 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, |
| 2548 | dev_root, 64); |
| 2549 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, |
| 2550 | dev_root_gen, 64); |
| 2551 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, |
| 2552 | dev_root_level, 8); |
| 2553 | |
| 2554 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, |
| 2555 | csum_root, 64); |
| 2556 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, |
| 2557 | csum_root_gen, 64); |
| 2558 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, |
| 2559 | csum_root_level, 8); |
| 2560 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, |
| 2561 | total_bytes, 64); |
| 2562 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, |
| 2563 | bytes_used, 64); |
| 2564 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, |
| 2565 | num_devices, 64); |
| 2566 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2567 | /* struct btrfs_balance_item */ |
| 2568 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2569 | |
Ilya Dryomov | 0940ebf | 2012-01-16 22:04:48 +0200 | [diff] [blame] | 2570 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
| 2571 | struct btrfs_balance_item *bi, |
| 2572 | struct btrfs_disk_balance_args *ba) |
| 2573 | { |
| 2574 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); |
| 2575 | } |
| 2576 | |
| 2577 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, |
| 2578 | struct btrfs_balance_item *bi, |
| 2579 | struct btrfs_disk_balance_args *ba) |
| 2580 | { |
| 2581 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); |
| 2582 | } |
| 2583 | |
| 2584 | static inline void btrfs_balance_meta(struct extent_buffer *eb, |
| 2585 | struct btrfs_balance_item *bi, |
| 2586 | struct btrfs_disk_balance_args *ba) |
| 2587 | { |
| 2588 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); |
| 2589 | } |
| 2590 | |
| 2591 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, |
| 2592 | struct btrfs_balance_item *bi, |
| 2593 | struct btrfs_disk_balance_args *ba) |
| 2594 | { |
| 2595 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); |
| 2596 | } |
| 2597 | |
| 2598 | static inline void btrfs_balance_sys(struct extent_buffer *eb, |
| 2599 | struct btrfs_balance_item *bi, |
| 2600 | struct btrfs_disk_balance_args *ba) |
| 2601 | { |
| 2602 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); |
| 2603 | } |
| 2604 | |
| 2605 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, |
| 2606 | struct btrfs_balance_item *bi, |
| 2607 | struct btrfs_disk_balance_args *ba) |
| 2608 | { |
| 2609 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); |
| 2610 | } |
| 2611 | |
| 2612 | static inline void |
| 2613 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, |
| 2614 | struct btrfs_disk_balance_args *disk) |
| 2615 | { |
| 2616 | memset(cpu, 0, sizeof(*cpu)); |
| 2617 | |
| 2618 | cpu->profiles = le64_to_cpu(disk->profiles); |
| 2619 | cpu->usage = le64_to_cpu(disk->usage); |
| 2620 | cpu->devid = le64_to_cpu(disk->devid); |
| 2621 | cpu->pstart = le64_to_cpu(disk->pstart); |
| 2622 | cpu->pend = le64_to_cpu(disk->pend); |
| 2623 | cpu->vstart = le64_to_cpu(disk->vstart); |
| 2624 | cpu->vend = le64_to_cpu(disk->vend); |
| 2625 | cpu->target = le64_to_cpu(disk->target); |
| 2626 | cpu->flags = le64_to_cpu(disk->flags); |
| 2627 | } |
| 2628 | |
| 2629 | static inline void |
| 2630 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, |
| 2631 | struct btrfs_balance_args *cpu) |
| 2632 | { |
| 2633 | memset(disk, 0, sizeof(*disk)); |
| 2634 | |
| 2635 | disk->profiles = cpu_to_le64(cpu->profiles); |
| 2636 | disk->usage = cpu_to_le64(cpu->usage); |
| 2637 | disk->devid = cpu_to_le64(cpu->devid); |
| 2638 | disk->pstart = cpu_to_le64(cpu->pstart); |
| 2639 | disk->pend = cpu_to_le64(cpu->pend); |
| 2640 | disk->vstart = cpu_to_le64(cpu->vstart); |
| 2641 | disk->vend = cpu_to_le64(cpu->vend); |
| 2642 | disk->target = cpu_to_le64(cpu->target); |
| 2643 | disk->flags = cpu_to_le64(cpu->flags); |
| 2644 | } |
| 2645 | |
| 2646 | /* struct btrfs_super_block */ |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2647 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
Chris Mason | a061fc8 | 2008-05-07 11:43:44 -0400 | [diff] [blame] | 2648 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2649 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
| 2650 | generation, 64); |
| 2651 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2652 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
| 2653 | struct btrfs_super_block, sys_chunk_array_size, 32); |
Yan Zheng | 84234f3 | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 2654 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
| 2655 | struct btrfs_super_block, chunk_root_generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2656 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
| 2657 | root_level, 8); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 2658 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
| 2659 | chunk_root, 64); |
| 2660 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2661 | chunk_root_level, 8); |
| 2662 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, |
| 2663 | log_root, 64); |
Chris Mason | c3027eb | 2008-12-08 16:40:21 -0500 | [diff] [blame] | 2664 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
| 2665 | log_root_transid, 64); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 2666 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
| 2667 | log_root_level, 8); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2668 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
| 2669 | total_bytes, 64); |
| 2670 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, |
| 2671 | bytes_used, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2672 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
| 2673 | sectorsize, 32); |
| 2674 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, |
| 2675 | nodesize, 32); |
| 2676 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, |
| 2677 | leafsize, 32); |
Chris Mason | 87ee04e | 2007-11-30 11:30:34 -0500 | [diff] [blame] | 2678 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
| 2679 | stripesize, 32); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2680 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
| 2681 | root_dir_objectid, 64); |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 2682 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
| 2683 | num_devices, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2684 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
| 2685 | compat_flags, 64); |
| 2686 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, |
Josef Bacik | 1253483 | 2009-12-17 21:32:27 +0000 | [diff] [blame] | 2687 | compat_ro_flags, 64); |
Josef Bacik | f2b636e | 2008-12-02 06:36:08 -0500 | [diff] [blame] | 2688 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
| 2689 | incompat_flags, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2690 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
| 2691 | csum_type, 16); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 2692 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
| 2693 | cache_generation, 64); |
Josef Bacik | 607d432 | 2008-12-02 07:17:45 -0500 | [diff] [blame] | 2694 | |
| 2695 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) |
| 2696 | { |
| 2697 | int t = btrfs_super_csum_type(s); |
| 2698 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); |
| 2699 | return btrfs_csum_sizes[t]; |
| 2700 | } |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2701 | |
| 2702 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 2703 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2704 | return offsetof(struct btrfs_leaf, items); |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 2705 | } |
| 2706 | |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2707 | /* struct btrfs_file_extent_item */ |
| 2708 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 2709 | |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 2710 | static inline unsigned long |
| 2711 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 2712 | { |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2713 | unsigned long offset = (unsigned long)e; |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2714 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2715 | return offset; |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 2716 | } |
| 2717 | |
| 2718 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) |
| 2719 | { |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2720 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
Chris Mason | 236454d | 2007-04-19 13:37:44 -0400 | [diff] [blame] | 2721 | } |
| 2722 | |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2723 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
| 2724 | disk_bytenr, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2725 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
| 2726 | generation, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2727 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
| 2728 | disk_num_bytes, 64); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2729 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
| 2730 | offset, 64); |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2731 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
| 2732 | num_bytes, 64); |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 2733 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
| 2734 | ram_bytes, 64); |
| 2735 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, |
| 2736 | compression, 8); |
| 2737 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, |
| 2738 | encryption, 8); |
| 2739 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, |
| 2740 | other_encoding, 16); |
| 2741 | |
| 2742 | /* this returns the number of file bytes represented by the inline item. |
| 2743 | * If an item is compressed, this is the uncompressed size |
| 2744 | */ |
| 2745 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, |
| 2746 | struct btrfs_file_extent_item *e) |
| 2747 | { |
| 2748 | return btrfs_file_extent_ram_bytes(eb, e); |
| 2749 | } |
| 2750 | |
| 2751 | /* |
| 2752 | * this returns the number of bytes used by the item on disk, minus the |
| 2753 | * size of any extent headers. If a file is compressed on disk, this is |
| 2754 | * the compressed size |
| 2755 | */ |
| 2756 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, |
| 2757 | struct btrfs_item *e) |
| 2758 | { |
| 2759 | unsigned long offset; |
| 2760 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); |
| 2761 | return btrfs_item_size(eb, e) - offset; |
| 2762 | } |
Chris Mason | 9f5fae2 | 2007-03-20 14:38:32 -0400 | [diff] [blame] | 2763 | |
Stefan Behrens | 733f4fb | 2012-05-25 16:06:10 +0200 | [diff] [blame] | 2764 | /* btrfs_dev_stats_item */ |
| 2765 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, |
| 2766 | struct btrfs_dev_stats_item *ptr, |
| 2767 | int index) |
| 2768 | { |
| 2769 | u64 val; |
| 2770 | |
| 2771 | read_extent_buffer(eb, &val, |
| 2772 | offsetof(struct btrfs_dev_stats_item, values) + |
| 2773 | ((unsigned long)ptr) + (index * sizeof(u64)), |
| 2774 | sizeof(val)); |
| 2775 | return val; |
| 2776 | } |
| 2777 | |
| 2778 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, |
| 2779 | struct btrfs_dev_stats_item *ptr, |
| 2780 | int index, u64 val) |
| 2781 | { |
| 2782 | write_extent_buffer(eb, &val, |
| 2783 | offsetof(struct btrfs_dev_stats_item, values) + |
| 2784 | ((unsigned long)ptr) + (index * sizeof(u64)), |
| 2785 | sizeof(val)); |
| 2786 | } |
| 2787 | |
Arne Jansen | 630dc77 | 2011-09-13 11:06:07 +0200 | [diff] [blame] | 2788 | /* btrfs_qgroup_status_item */ |
| 2789 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, |
| 2790 | generation, 64); |
| 2791 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, |
| 2792 | version, 64); |
| 2793 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, |
| 2794 | flags, 64); |
| 2795 | BTRFS_SETGET_FUNCS(qgroup_status_scan, struct btrfs_qgroup_status_item, |
| 2796 | scan, 64); |
| 2797 | |
| 2798 | /* btrfs_qgroup_info_item */ |
| 2799 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, |
| 2800 | generation, 64); |
| 2801 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); |
| 2802 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, |
| 2803 | rfer_cmpr, 64); |
| 2804 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); |
| 2805 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, |
| 2806 | excl_cmpr, 64); |
| 2807 | |
| 2808 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, |
| 2809 | struct btrfs_qgroup_info_item, generation, 64); |
| 2810 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, |
| 2811 | rfer, 64); |
| 2812 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, |
| 2813 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); |
| 2814 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, |
| 2815 | excl, 64); |
| 2816 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, |
| 2817 | struct btrfs_qgroup_info_item, excl_cmpr, 64); |
| 2818 | |
| 2819 | /* btrfs_qgroup_limit_item */ |
| 2820 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, |
| 2821 | flags, 64); |
| 2822 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, |
| 2823 | max_rfer, 64); |
| 2824 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, |
| 2825 | max_excl, 64); |
| 2826 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, |
| 2827 | rsv_rfer, 64); |
| 2828 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, |
| 2829 | rsv_excl, 64); |
| 2830 | |
Stefan Behrens | a2bff64 | 2012-11-05 17:32:20 +0100 | [diff] [blame] | 2831 | /* btrfs_dev_replace_item */ |
| 2832 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, |
| 2833 | struct btrfs_dev_replace_item, src_devid, 64); |
| 2834 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, |
| 2835 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, |
| 2836 | 64); |
| 2837 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, |
| 2838 | replace_state, 64); |
| 2839 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, |
| 2840 | time_started, 64); |
| 2841 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, |
| 2842 | time_stopped, 64); |
| 2843 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, |
| 2844 | num_write_errors, 64); |
| 2845 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, |
| 2846 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, |
| 2847 | 64); |
| 2848 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, |
| 2849 | cursor_left, 64); |
| 2850 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, |
| 2851 | cursor_right, 64); |
| 2852 | |
| 2853 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, |
| 2854 | struct btrfs_dev_replace_item, src_devid, 64); |
| 2855 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, |
| 2856 | struct btrfs_dev_replace_item, |
| 2857 | cont_reading_from_srcdev_mode, 64); |
| 2858 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, |
| 2859 | struct btrfs_dev_replace_item, replace_state, 64); |
| 2860 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, |
| 2861 | struct btrfs_dev_replace_item, time_started, 64); |
| 2862 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, |
| 2863 | struct btrfs_dev_replace_item, time_stopped, 64); |
| 2864 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, |
| 2865 | struct btrfs_dev_replace_item, num_write_errors, 64); |
| 2866 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, |
| 2867 | struct btrfs_dev_replace_item, |
| 2868 | num_uncorrectable_read_errors, 64); |
| 2869 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, |
| 2870 | struct btrfs_dev_replace_item, cursor_left, 64); |
| 2871 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, |
| 2872 | struct btrfs_dev_replace_item, cursor_right, 64); |
| 2873 | |
Al Viro | 815745c | 2011-11-17 15:40:49 -0500 | [diff] [blame] | 2874 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 2875 | { |
| 2876 | return sb->s_fs_info; |
| 2877 | } |
| 2878 | |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 2879 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
| 2880 | { |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 2881 | if (level == 0) |
| 2882 | return root->leafsize; |
| 2883 | return root->nodesize; |
| 2884 | } |
| 2885 | |
Chris Mason | 4beb1b8 | 2007-03-14 10:31:29 -0400 | [diff] [blame] | 2886 | /* helper function to cast into the data area of the leaf. */ |
| 2887 | #define btrfs_item_ptr(leaf, slot, type) \ |
Chris Mason | 123abc8 | 2007-03-14 14:14:43 -0400 | [diff] [blame] | 2888 | ((type *)(btrfs_leaf_data(leaf) + \ |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2889 | btrfs_item_offset_nr(leaf, slot))) |
| 2890 | |
| 2891 | #define btrfs_item_ptr_offset(leaf, slot) \ |
| 2892 | ((unsigned long)(btrfs_leaf_data(leaf) + \ |
| 2893 | btrfs_item_offset_nr(leaf, slot))) |
Chris Mason | 4beb1b8 | 2007-03-14 10:31:29 -0400 | [diff] [blame] | 2894 | |
Chris Mason | 2b1f55b | 2008-09-24 11:48:04 -0400 | [diff] [blame] | 2895 | static inline struct dentry *fdentry(struct file *file) |
| 2896 | { |
Chris Mason | 6da6aba | 2007-12-18 16:15:09 -0500 | [diff] [blame] | 2897 | return file->f_path.dentry; |
Chris Mason | 6da6aba | 2007-12-18 16:15:09 -0500 | [diff] [blame] | 2898 | } |
| 2899 | |
Josef Bacik | 6737773 | 2010-09-16 16:19:09 -0400 | [diff] [blame] | 2900 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
| 2901 | { |
| 2902 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && |
| 2903 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); |
| 2904 | } |
| 2905 | |
Josef Bacik | 3b16a4e | 2011-09-21 15:05:58 -0400 | [diff] [blame] | 2906 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
| 2907 | { |
| 2908 | return mapping_gfp_mask(mapping) & ~__GFP_FS; |
| 2909 | } |
| 2910 | |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 2911 | /* extent-tree.c */ |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 2912 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
Josef Bacik | 9e0baf6 | 2011-07-15 15:16:44 +0000 | [diff] [blame] | 2913 | unsigned num_items) |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 2914 | { |
| 2915 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * |
| 2916 | 3 * num_items; |
| 2917 | } |
| 2918 | |
Josef Bacik | 0712718 | 2011-08-19 10:29:59 -0400 | [diff] [blame] | 2919 | /* |
| 2920 | * Doing a truncate won't result in new nodes or leaves, just what we need for |
| 2921 | * COW. |
| 2922 | */ |
| 2923 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, |
| 2924 | unsigned num_items) |
| 2925 | { |
| 2926 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * |
| 2927 | num_items; |
| 2928 | } |
| 2929 | |
Chris Mason | fa9c0d79 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 2930 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
Chris Mason | 56bec29 | 2009-03-13 10:10:06 -0400 | [diff] [blame] | 2931 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
| 2932 | struct btrfs_root *root, unsigned long count); |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 2933 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 2934 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
| 2935 | struct btrfs_root *root, u64 bytenr, |
| 2936 | u64 num_bytes, u64 *refs, u64 *flags); |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 2937 | int btrfs_pin_extent(struct btrfs_root *root, |
| 2938 | u64 bytenr, u64 num, int reserved); |
Chris Mason | e688b725 | 2011-10-31 20:52:39 -0400 | [diff] [blame] | 2939 | int btrfs_pin_extent_for_log_replay(struct btrfs_trans_handle *trans, |
| 2940 | struct btrfs_root *root, |
| 2941 | u64 bytenr, u64 num_bytes); |
Yan Zheng | 80ff385 | 2008-10-30 14:20:02 -0400 | [diff] [blame] | 2942 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2943 | struct btrfs_root *root, |
| 2944 | u64 objectid, u64 offset, u64 bytenr); |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 2945 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
| 2946 | struct btrfs_fs_info *info, |
| 2947 | u64 bytenr); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2948 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 2949 | u64 btrfs_find_block_group(struct btrfs_root *root, |
| 2950 | u64 search_start, u64 search_hint, int owner); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 2951 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2952 | struct btrfs_root *root, u32 blocksize, |
| 2953 | u64 parent, u64 root_objectid, |
| 2954 | struct btrfs_disk_key *key, int level, |
Jan Schmidt | 5581a51 | 2012-05-16 17:04:52 +0200 | [diff] [blame] | 2955 | u64 hint, u64 empty_size); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 2956 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
| 2957 | struct btrfs_root *root, |
| 2958 | struct extent_buffer *buf, |
Jan Schmidt | 5581a51 | 2012-05-16 17:04:52 +0200 | [diff] [blame] | 2959 | u64 parent, int last_ref); |
Chris Mason | 65b51a0 | 2008-08-01 15:11:20 -0400 | [diff] [blame] | 2960 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
| 2961 | struct btrfs_root *root, |
Chris Mason | 4008c04 | 2009-02-12 14:09:45 -0500 | [diff] [blame] | 2962 | u64 bytenr, u32 blocksize, |
| 2963 | int level); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2964 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
| 2965 | struct btrfs_root *root, |
| 2966 | u64 root_objectid, u64 owner, |
| 2967 | u64 offset, struct btrfs_key *ins); |
| 2968 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
| 2969 | struct btrfs_root *root, |
| 2970 | u64 root_objectid, u64 owner, u64 offset, |
| 2971 | struct btrfs_key *ins); |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 2972 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
| 2973 | struct btrfs_root *root, |
| 2974 | u64 num_bytes, u64 min_alloc_size, |
| 2975 | u64 empty_size, u64 hint_byte, |
Josef Bacik | 81c9ad2 | 2012-01-18 10:56:06 -0500 | [diff] [blame] | 2976 | struct btrfs_key *ins, u64 data); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 2977 | 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] | 2978 | struct extent_buffer *buf, int full_backref, int for_cow); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2979 | 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] | 2980 | struct extent_buffer *buf, int full_backref, int for_cow); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2981 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
| 2982 | struct btrfs_root *root, |
| 2983 | u64 bytenr, u64 num_bytes, u64 flags, |
| 2984 | int is_data); |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 2985 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
| 2986 | struct btrfs_root *root, |
Arne Jansen | 66d7e7f | 2011-09-12 15:26:38 +0200 | [diff] [blame] | 2987 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
| 2988 | u64 owner, u64 offset, int for_cow); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 2989 | |
Chris Mason | 65b51a0 | 2008-08-01 15:11:20 -0400 | [diff] [blame] | 2990 | 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] | 2991 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
| 2992 | u64 start, u64 len); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 2993 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
| 2994 | struct btrfs_root *root); |
Chris Mason | ccd467d | 2007-06-28 15:57:36 -0400 | [diff] [blame] | 2995 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
Yan Zheng | 11833d6 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 2996 | struct btrfs_root *root); |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 2997 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
Zheng Yan | 31840ae | 2008-09-23 13:14:14 -0400 | [diff] [blame] | 2998 | struct btrfs_root *root, |
| 2999 | u64 bytenr, u64 num_bytes, u64 parent, |
Arne Jansen | 66d7e7f | 2011-09-12 15:26:38 +0200 | [diff] [blame] | 3000 | u64 root_objectid, u64 owner, u64 offset, int for_cow); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3001 | |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 3002 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
| 3003 | struct btrfs_root *root); |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 3004 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
Chris Mason | 9078a3e | 2007-04-26 16:46:15 -0400 | [diff] [blame] | 3005 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
| 3006 | int btrfs_read_block_groups(struct btrfs_root *root); |
Josef Bacik | ba1bf48 | 2009-09-11 16:11:19 -0400 | [diff] [blame] | 3007 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 3008 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
| 3009 | struct btrfs_root *root, u64 bytes_used, |
Chris Mason | e17cade | 2008-04-15 15:41:47 -0400 | [diff] [blame] | 3010 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 3011 | u64 size); |
Zheng Yan | 1a40e23 | 2008-09-26 10:09:34 -0400 | [diff] [blame] | 3012 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
| 3013 | struct btrfs_root *root, u64 group_start); |
Josef Bacik | ea658ba | 2012-09-11 16:57:25 -0400 | [diff] [blame] | 3014 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
| 3015 | struct btrfs_root *root); |
Yan Zheng | 2b82032 | 2008-11-17 21:11:30 -0500 | [diff] [blame] | 3016 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
Miao Xie | 6d07bce | 2011-01-05 10:07:31 +0000 | [diff] [blame] | 3017 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
Chris Mason | 4184ea7 | 2009-03-10 12:39:20 -0400 | [diff] [blame] | 3018 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 3019 | |
| 3020 | enum btrfs_reserve_flush_enum { |
| 3021 | /* If we are in the transaction, we can't flush anything.*/ |
| 3022 | BTRFS_RESERVE_NO_FLUSH, |
| 3023 | /* |
| 3024 | * Flushing delalloc may cause deadlock somewhere, in this |
| 3025 | * case, use FLUSH LIMIT |
| 3026 | */ |
| 3027 | BTRFS_RESERVE_FLUSH_LIMIT, |
| 3028 | BTRFS_RESERVE_FLUSH_ALL, |
| 3029 | }; |
| 3030 | |
Yan, Zheng | 0ca1f7c | 2010-05-16 10:48:47 -0400 | [diff] [blame] | 3031 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
| 3032 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 3033 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
| 3034 | struct btrfs_root *root); |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 3035 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
| 3036 | struct inode *inode); |
| 3037 | void btrfs_orphan_release_metadata(struct inode *inode); |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 3038 | int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans, |
| 3039 | struct btrfs_pending_snapshot *pending); |
Yan, Zheng | 0ca1f7c | 2010-05-16 10:48:47 -0400 | [diff] [blame] | 3040 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
| 3041 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); |
| 3042 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); |
| 3043 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); |
Miao Xie | 66d8f3d | 2012-09-06 04:02:28 -0600 | [diff] [blame] | 3044 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
| 3045 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, |
| 3046 | unsigned short type); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 3047 | void btrfs_free_block_rsv(struct btrfs_root *root, |
| 3048 | struct btrfs_block_rsv *rsv); |
Josef Bacik | 4a92b1b | 2011-08-30 12:34:28 -0400 | [diff] [blame] | 3049 | int btrfs_block_rsv_add(struct btrfs_root *root, |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 3050 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
| 3051 | enum btrfs_reserve_flush_enum flush); |
Josef Bacik | 4a92b1b | 2011-08-30 12:34:28 -0400 | [diff] [blame] | 3052 | int btrfs_block_rsv_check(struct btrfs_root *root, |
Josef Bacik | 36ba022 | 2011-10-18 12:15:48 -0400 | [diff] [blame] | 3053 | struct btrfs_block_rsv *block_rsv, int min_factor); |
| 3054 | int btrfs_block_rsv_refill(struct btrfs_root *root, |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 3055 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
| 3056 | enum btrfs_reserve_flush_enum flush); |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 3057 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
| 3058 | struct btrfs_block_rsv *dst_rsv, |
| 3059 | u64 num_bytes); |
| 3060 | void btrfs_block_rsv_release(struct btrfs_root *root, |
| 3061 | struct btrfs_block_rsv *block_rsv, |
| 3062 | u64 num_bytes); |
| 3063 | int btrfs_set_block_group_ro(struct btrfs_root *root, |
| 3064 | struct btrfs_block_group_cache *cache); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3065 | void btrfs_set_block_group_rw(struct btrfs_root *root, |
| 3066 | struct btrfs_block_group_cache *cache); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 3067 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
Miao Xie | 6d07bce | 2011-01-05 10:07:31 +0000 | [diff] [blame] | 3068 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3069 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
| 3070 | u64 start, u64 end); |
| 3071 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, |
Li Dongyang | 5378e60 | 2011-03-24 10:24:27 +0000 | [diff] [blame] | 3072 | u64 num_bytes, u64 *actual_bytes); |
Chris Mason | c87f08c | 2011-02-16 13:57:04 -0500 | [diff] [blame] | 3073 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
| 3074 | struct btrfs_root *root, u64 type); |
Li Dongyang | f7039b1 | 2011-03-24 10:24:28 +0000 | [diff] [blame] | 3075 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3076 | |
liubo | c59021f | 2011-03-07 02:13:14 +0000 | [diff] [blame] | 3077 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 3078 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
| 3079 | struct btrfs_fs_info *fs_info); |
Liu Bo | 31e5022 | 2012-11-21 14:18:10 +0000 | [diff] [blame] | 3080 | int __get_raid_index(u64 flags); |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3081 | /* ctree.c */ |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3082 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
| 3083 | int level, int *slot); |
| 3084 | 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] | 3085 | int btrfs_previous_item(struct btrfs_root *root, |
| 3086 | struct btrfs_path *path, u64 min_objectid, |
| 3087 | int type); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3088 | void btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
| 3089 | struct btrfs_root *root, struct btrfs_path *path, |
| 3090 | struct btrfs_key *new_key); |
Chris Mason | 925baed | 2008-06-25 16:01:30 -0400 | [diff] [blame] | 3091 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
| 3092 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); |
Chris Mason | e7a8456 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 3093 | 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] | 3094 | struct btrfs_key *key, int lowest_level, |
| 3095 | int cache_only, u64 min_trans); |
| 3096 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3097 | struct btrfs_key *max_key, |
Chris Mason | 3f157a2 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 3098 | struct btrfs_path *path, int cache_only, |
| 3099 | u64 min_trans); |
Alexander Block | 7069830 | 2012-06-05 21:07:48 +0200 | [diff] [blame] | 3100 | enum btrfs_compare_tree_result { |
| 3101 | BTRFS_COMPARE_TREE_NEW, |
| 3102 | BTRFS_COMPARE_TREE_DELETED, |
| 3103 | BTRFS_COMPARE_TREE_CHANGED, |
| 3104 | }; |
| 3105 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, |
| 3106 | struct btrfs_root *right_root, |
| 3107 | struct btrfs_path *left_path, |
| 3108 | struct btrfs_path *right_path, |
| 3109 | struct btrfs_key *key, |
| 3110 | enum btrfs_compare_tree_result result, |
| 3111 | void *ctx); |
| 3112 | int btrfs_compare_trees(struct btrfs_root *left_root, |
| 3113 | struct btrfs_root *right_root, |
| 3114 | btrfs_changed_cb_t cb, void *ctx); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3115 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
| 3116 | struct btrfs_root *root, struct extent_buffer *buf, |
| 3117 | struct extent_buffer *parent, int parent_slot, |
Chris Mason | 9fa8cfe | 2009-03-13 10:24:59 -0400 | [diff] [blame] | 3118 | struct extent_buffer **cow_ret); |
Chris Mason | be20aa9 | 2007-12-17 20:14:01 -0500 | [diff] [blame] | 3119 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
| 3120 | struct btrfs_root *root, |
| 3121 | struct extent_buffer *buf, |
| 3122 | struct extent_buffer **cow_ret, u64 new_root_objectid); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3123 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
| 3124 | struct extent_buffer *buf); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3125 | void btrfs_extend_item(struct btrfs_trans_handle *trans, |
| 3126 | struct btrfs_root *root, struct btrfs_path *path, |
| 3127 | u32 data_size); |
| 3128 | void btrfs_truncate_item(struct btrfs_trans_handle *trans, |
| 3129 | struct btrfs_root *root, |
| 3130 | struct btrfs_path *path, |
| 3131 | u32 new_size, int from_end); |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 3132 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
| 3133 | struct btrfs_root *root, |
| 3134 | struct btrfs_path *path, |
| 3135 | struct btrfs_key *new_key, |
| 3136 | unsigned long split_offset); |
Yan, Zheng | ad48fd75 | 2009-11-12 09:33:58 +0000 | [diff] [blame] | 3137 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
| 3138 | struct btrfs_root *root, |
| 3139 | struct btrfs_path *path, |
| 3140 | struct btrfs_key *new_key); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3141 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
| 3142 | *root, struct btrfs_key *key, struct btrfs_path *p, int |
| 3143 | ins_len, int cow); |
Jan Schmidt | 5d9e75c4 | 2012-05-16 18:25:47 +0200 | [diff] [blame] | 3144 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
| 3145 | struct btrfs_path *p, u64 time_seq); |
Arne Jansen | 2f38b3e | 2011-09-13 11:18:10 +0200 | [diff] [blame] | 3146 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
| 3147 | struct btrfs_key *key, struct btrfs_path *p, |
| 3148 | int find_higher, int return_any); |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 3149 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3150 | struct btrfs_root *root, struct extent_buffer *parent, |
Chris Mason | a6b6e75 | 2007-10-15 16:22:39 -0400 | [diff] [blame] | 3151 | int start_slot, int cache_only, u64 *last_ret, |
| 3152 | struct btrfs_key *progress); |
David Sterba | b3b4aa7 | 2011-04-21 01:20:15 +0200 | [diff] [blame] | 3153 | void btrfs_release_path(struct btrfs_path *p); |
Chris Mason | 2c90e5d | 2007-04-02 10:50:19 -0400 | [diff] [blame] | 3154 | struct btrfs_path *btrfs_alloc_path(void); |
| 3155 | void btrfs_free_path(struct btrfs_path *p); |
Chris Mason | b4ce94d | 2009-02-04 09:25:08 -0500 | [diff] [blame] | 3156 | void btrfs_set_path_blocking(struct btrfs_path *p); |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3157 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
Chris Mason | bd68151 | 2011-07-16 15:23:14 -0400 | [diff] [blame] | 3158 | struct extent_buffer *held, int held_rw); |
Chris Mason | b4ce94d | 2009-02-04 09:25:08 -0500 | [diff] [blame] | 3159 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
| 3160 | |
Chris Mason | 85e21ba | 2008-01-29 15:11:36 -0500 | [diff] [blame] | 3161 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| 3162 | struct btrfs_path *path, int slot, int nr); |
Chris Mason | 85e21ba | 2008-01-29 15:11:36 -0500 | [diff] [blame] | 3163 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
| 3164 | struct btrfs_root *root, |
| 3165 | struct btrfs_path *path) |
| 3166 | { |
| 3167 | return btrfs_del_items(trans, root, path, path->slots[0], 1); |
| 3168 | } |
| 3169 | |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3170 | void setup_items_for_insert(struct btrfs_trans_handle *trans, |
| 3171 | struct btrfs_root *root, struct btrfs_path *path, |
| 3172 | struct btrfs_key *cpu_key, u32 *data_size, |
| 3173 | u32 total_data, u32 total_size, int nr); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3174 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
| 3175 | *root, struct btrfs_key *key, void *data, u32 data_size); |
Chris Mason | 9c58309 | 2008-01-29 15:15:18 -0500 | [diff] [blame] | 3176 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
| 3177 | struct btrfs_root *root, |
| 3178 | struct btrfs_path *path, |
| 3179 | struct btrfs_key *cpu_key, u32 *data_size, int nr); |
| 3180 | |
| 3181 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, |
| 3182 | struct btrfs_root *root, |
| 3183 | struct btrfs_path *path, |
| 3184 | struct btrfs_key *key, |
| 3185 | u32 data_size) |
| 3186 | { |
| 3187 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); |
| 3188 | } |
| 3189 | |
Chris Mason | 234b63a | 2007-03-13 10:46:10 -0400 | [diff] [blame] | 3190 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
Josef Bacik | 70c8a91 | 2012-10-11 16:54:30 -0400 | [diff] [blame] | 3191 | int btrfs_next_leaf_write(struct btrfs_trans_handle *trans, |
| 3192 | struct btrfs_root *root, struct btrfs_path *path, |
| 3193 | int del); |
Jan Schmidt | 3d7806e | 2012-06-11 08:29:29 +0200 | [diff] [blame] | 3194 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
| 3195 | u64 time_seq); |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 3196 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
| 3197 | struct btrfs_path *p, u64 time_seq) |
Jan Schmidt | c7d22a3 | 2011-11-22 15:14:33 +0100 | [diff] [blame] | 3198 | { |
| 3199 | ++p->slots[0]; |
| 3200 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 3201 | return btrfs_next_old_leaf(root, p, time_seq); |
Jan Schmidt | c7d22a3 | 2011-11-22 15:14:33 +0100 | [diff] [blame] | 3202 | return 0; |
| 3203 | } |
Alexander Block | 1c8f52a | 2012-06-19 07:42:25 -0600 | [diff] [blame] | 3204 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
| 3205 | { |
| 3206 | return btrfs_next_old_item(root, p, 0); |
| 3207 | } |
Chris Mason | 7bb8631 | 2007-12-11 09:25:06 -0500 | [diff] [blame] | 3208 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3209 | 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] | 3210 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
| 3211 | struct btrfs_block_rsv *block_rsv, |
| 3212 | int update_ref, int for_reloc); |
Yan Zheng | f82d02d | 2008-10-29 14:49:05 -0400 | [diff] [blame] | 3213 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
| 3214 | struct btrfs_root *root, |
| 3215 | struct extent_buffer *node, |
| 3216 | struct extent_buffer *parent); |
David Sterba | 7841cb2 | 2011-05-31 18:07:27 +0200 | [diff] [blame] | 3217 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
| 3218 | { |
| 3219 | /* |
| 3220 | * Get synced with close_ctree() |
| 3221 | */ |
| 3222 | smp_mb(); |
| 3223 | return fs_info->closing; |
| 3224 | } |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 3225 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
| 3226 | { |
Ilya Dryomov | 837d5b6 | 2012-01-16 22:04:49 +0200 | [diff] [blame] | 3227 | kfree(fs_info->balance_ctl); |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 3228 | kfree(fs_info->delayed_root); |
| 3229 | kfree(fs_info->extent_root); |
| 3230 | kfree(fs_info->tree_root); |
| 3231 | kfree(fs_info->chunk_root); |
| 3232 | kfree(fs_info->dev_root); |
| 3233 | kfree(fs_info->csum_root); |
Arne Jansen | bcef60f | 2011-09-13 15:23:30 +0200 | [diff] [blame] | 3234 | kfree(fs_info->quota_root); |
David Sterba | 6c41761 | 2011-04-13 15:41:04 +0200 | [diff] [blame] | 3235 | kfree(fs_info->super_copy); |
| 3236 | kfree(fs_info->super_for_commit); |
| 3237 | kfree(fs_info); |
| 3238 | } |
David Sterba | 7841cb2 | 2011-05-31 18:07:27 +0200 | [diff] [blame] | 3239 | |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 3240 | /* tree mod log functions from ctree.c */ |
| 3241 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, |
| 3242 | struct seq_list *elem); |
| 3243 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, |
| 3244 | struct seq_list *elem); |
| 3245 | static inline u64 btrfs_inc_tree_mod_seq(struct btrfs_fs_info *fs_info) |
| 3246 | { |
| 3247 | return atomic_inc_return(&fs_info->tree_mod_seq); |
| 3248 | } |
Jan Schmidt | 5b6602e | 2012-10-23 11:28:27 +0200 | [diff] [blame] | 3249 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
Jan Schmidt | 097b8a7 | 2012-06-21 11:08:04 +0200 | [diff] [blame] | 3250 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3251 | /* root-item.c */ |
Chris Mason | ea9e8b1 | 2008-11-17 21:14:24 -0500 | [diff] [blame] | 3252 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3253 | struct btrfs_path *path, |
| 3254 | u64 root_id, u64 ref_id); |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 3255 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
| 3256 | struct btrfs_root *tree_root, |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3257 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
| 3258 | const char *name, int name_len); |
| 3259 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, |
| 3260 | struct btrfs_root *tree_root, |
| 3261 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, |
Chris Mason | 0660b5a | 2008-11-17 20:37:39 -0500 | [diff] [blame] | 3262 | const char *name, int name_len); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3263 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| 3264 | struct btrfs_key *key); |
| 3265 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root |
| 3266 | *root, struct btrfs_key *key, struct btrfs_root_item |
| 3267 | *item); |
Jeff Mahoney | b45a9d8 | 2011-10-03 23:22:44 -0400 | [diff] [blame] | 3268 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
| 3269 | struct btrfs_root *root, |
| 3270 | struct btrfs_key *key, |
| 3271 | struct btrfs_root_item *item); |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 3272 | void btrfs_read_root_item(struct btrfs_root *root, |
| 3273 | struct extent_buffer *eb, int slot, |
| 3274 | struct btrfs_root_item *item); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 3275 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct |
| 3276 | btrfs_root_item *item, struct btrfs_key *key); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 3277 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid); |
Yan, Zheng | 76dda93 | 2009-09-21 16:00:26 -0400 | [diff] [blame] | 3278 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
Mark Fasheh | bf5f32e | 2011-07-14 21:23:06 +0000 | [diff] [blame] | 3279 | void btrfs_set_root_node(struct btrfs_root_item *item, |
| 3280 | struct extent_buffer *node); |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 3281 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
Alexander Block | 8ea05e3 | 2012-07-25 17:35:53 +0200 | [diff] [blame] | 3282 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
| 3283 | struct btrfs_root *root); |
Li Zefan | 08fe4db | 2011-03-28 02:01:25 +0000 | [diff] [blame] | 3284 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3285 | /* dir-item.c */ |
Chris Mason | 9c52057 | 2012-12-17 14:26:57 -0500 | [diff] [blame] | 3286 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
| 3287 | const char *name, int name_len); |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 3288 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
| 3289 | struct btrfs_root *root, const char *name, |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 3290 | int name_len, struct inode *dir, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 3291 | struct btrfs_key *location, u8 type, u64 index); |
Chris Mason | 7e38180 | 2007-04-19 15:36:27 -0400 | [diff] [blame] | 3292 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
| 3293 | struct btrfs_root *root, |
| 3294 | struct btrfs_path *path, u64 dir, |
| 3295 | const char *name, int name_len, |
| 3296 | int mod); |
| 3297 | struct btrfs_dir_item * |
| 3298 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, |
| 3299 | struct btrfs_root *root, |
| 3300 | struct btrfs_path *path, u64 dir, |
| 3301 | u64 objectid, const char *name, int name_len, |
| 3302 | int mod); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3303 | struct btrfs_dir_item * |
| 3304 | btrfs_search_dir_index_item(struct btrfs_root *root, |
| 3305 | struct btrfs_path *path, u64 dirid, |
| 3306 | const char *name, int name_len); |
Chris Mason | 7e38180 | 2007-04-19 15:36:27 -0400 | [diff] [blame] | 3307 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
| 3308 | struct btrfs_path *path, |
Chris Mason | 7f5c151 | 2007-03-23 15:56:19 -0400 | [diff] [blame] | 3309 | const char *name, int name_len); |
Chris Mason | 7e38180 | 2007-04-19 15:36:27 -0400 | [diff] [blame] | 3310 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
| 3311 | struct btrfs_root *root, |
| 3312 | struct btrfs_path *path, |
| 3313 | struct btrfs_dir_item *di); |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 3314 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
Yan, Zheng | f34f57a | 2009-11-12 09:35:27 +0000 | [diff] [blame] | 3315 | struct btrfs_root *root, |
| 3316 | struct btrfs_path *path, u64 objectid, |
| 3317 | const char *name, u16 name_len, |
| 3318 | const void *data, u16 data_len); |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 3319 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
| 3320 | struct btrfs_root *root, |
| 3321 | struct btrfs_path *path, u64 dir, |
| 3322 | const char *name, u16 name_len, |
| 3323 | int mod); |
Josef Bacik | 22a94d4 | 2011-03-16 16:47:17 -0400 | [diff] [blame] | 3324 | int verify_dir_item(struct btrfs_root *root, |
| 3325 | struct extent_buffer *leaf, |
| 3326 | struct btrfs_dir_item *dir_item); |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 3327 | |
| 3328 | /* orphan.c */ |
| 3329 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, |
| 3330 | struct btrfs_root *root, u64 offset); |
| 3331 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, |
| 3332 | struct btrfs_root *root, u64 offset); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3333 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
Josef Bacik | 7b12876 | 2008-07-24 12:17:14 -0400 | [diff] [blame] | 3334 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3335 | /* inode-item.c */ |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 3336 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
| 3337 | struct btrfs_root *root, |
| 3338 | const char *name, int name_len, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 3339 | u64 inode_objectid, u64 ref_objectid, u64 index); |
Chris Mason | 3954401 | 2007-12-12 14:38:19 -0500 | [diff] [blame] | 3340 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
| 3341 | struct btrfs_root *root, |
| 3342 | const char *name, int name_len, |
Josef Bacik | aec7477 | 2008-07-24 12:12:38 -0400 | [diff] [blame] | 3343 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 3344 | int btrfs_get_inode_ref_index(struct btrfs_trans_handle *trans, |
| 3345 | struct btrfs_root *root, |
| 3346 | struct btrfs_path *path, |
| 3347 | const char *name, int name_len, |
| 3348 | u64 inode_objectid, u64 ref_objectid, int mod, |
| 3349 | u64 *ret_index); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 3350 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
| 3351 | struct btrfs_root *root, |
| 3352 | struct btrfs_path *path, u64 objectid); |
Chris Mason | 293ffd5 | 2007-03-20 15:57:25 -0400 | [diff] [blame] | 3353 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
Chris Mason | d6e4a42 | 2007-04-06 15:37:36 -0400 | [diff] [blame] | 3354 | *root, struct btrfs_path *path, |
| 3355 | struct btrfs_key *location, int mod); |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3356 | |
Mark Fasheh | f186373 | 2012-08-08 11:32:27 -0700 | [diff] [blame] | 3357 | struct btrfs_inode_extref * |
| 3358 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, |
| 3359 | struct btrfs_root *root, |
| 3360 | struct btrfs_path *path, |
| 3361 | const char *name, int name_len, |
| 3362 | u64 inode_objectid, u64 ref_objectid, int ins_len, |
| 3363 | int cow); |
| 3364 | |
| 3365 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, |
| 3366 | u64 ref_objectid, const char *name, |
| 3367 | int name_len, |
| 3368 | struct btrfs_inode_extref **extref_ret); |
| 3369 | |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3370 | /* file-item.c */ |
Chris Mason | 459931e | 2008-12-10 09:10:46 -0500 | [diff] [blame] | 3371 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
| 3372 | struct btrfs_root *root, u64 bytenr, u64 len); |
Chris Mason | 61b4944 | 2008-07-31 15:42:53 -0400 | [diff] [blame] | 3373 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 3374 | struct bio *bio, u32 *dst); |
Josef Bacik | 4b46fce | 2010-05-23 11:00:55 -0400 | [diff] [blame] | 3375 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
Josef Bacik | c329861 | 2012-08-03 16:49:19 -0400 | [diff] [blame] | 3376 | struct bio *bio, u64 logical_offset); |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 3377 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 3378 | struct btrfs_root *root, |
| 3379 | u64 objectid, u64 pos, |
| 3380 | u64 disk_offset, u64 disk_num_bytes, |
| 3381 | u64 num_bytes, u64 offset, u64 ram_bytes, |
| 3382 | u8 compression, u8 encryption, u16 other_encoding); |
Chris Mason | dee26a9 | 2007-03-26 16:00:06 -0400 | [diff] [blame] | 3383 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
| 3384 | struct btrfs_root *root, |
| 3385 | struct btrfs_path *path, u64 objectid, |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 3386 | u64 bytenr, int mod); |
Miao Xie | 315a985 | 2012-11-01 07:33:59 +0000 | [diff] [blame] | 3387 | u64 btrfs_file_extent_length(struct btrfs_path *path); |
Chris Mason | 065631f | 2008-02-20 12:07:25 -0500 | [diff] [blame] | 3388 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 3389 | struct btrfs_root *root, |
Chris Mason | e6dcd2d | 2008-07-17 12:53:50 -0400 | [diff] [blame] | 3390 | struct btrfs_ordered_sum *sums); |
Chris Mason | 3edf7d3 | 2008-07-18 06:17:13 -0400 | [diff] [blame] | 3391 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 3392 | struct bio *bio, u64 file_start, int contig); |
Chris Mason | b18c668 | 2007-04-17 13:26:50 -0400 | [diff] [blame] | 3393 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
| 3394 | struct btrfs_root *root, |
| 3395 | struct btrfs_path *path, |
Chris Mason | d20f704 | 2008-12-08 16:58:54 -0500 | [diff] [blame] | 3396 | u64 bytenr, int cow); |
Chris Mason | 1de037a | 2007-05-29 15:17:08 -0400 | [diff] [blame] | 3397 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
| 3398 | struct btrfs_root *root, struct btrfs_path *path, |
| 3399 | u64 isize); |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 3400 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
| 3401 | struct list_head *list, int search_commit); |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3402 | /* inode.c */ |
Miao Xie | 8ccf6f19 | 2012-10-25 09:28:04 +0000 | [diff] [blame] | 3403 | struct btrfs_delalloc_work { |
| 3404 | struct inode *inode; |
| 3405 | int wait; |
| 3406 | int delay_iput; |
| 3407 | struct completion completion; |
| 3408 | struct list_head list; |
| 3409 | struct btrfs_work work; |
| 3410 | }; |
| 3411 | |
| 3412 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, |
| 3413 | int wait, int delay_iput); |
| 3414 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); |
| 3415 | |
Josef Bacik | b267515 | 2011-07-18 13:21:36 -0400 | [diff] [blame] | 3416 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
| 3417 | size_t pg_offset, u64 start, u64 len, |
| 3418 | int create); |
Chris Mason | 4881ee5 | 2008-07-24 09:51:08 -0400 | [diff] [blame] | 3419 | |
| 3420 | /* 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] | 3421 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
Chris Mason | 4881ee5 | 2008-07-24 09:51:08 -0400 | [diff] [blame] | 3422 | #define ClearPageChecked ClearPageFsMisc |
| 3423 | #define SetPageChecked SetPageFsMisc |
| 3424 | #define PageChecked PageFsMisc |
| 3425 | #endif |
| 3426 | |
Li Zefan | b6973aa | 2011-07-20 03:46:35 +0000 | [diff] [blame] | 3427 | /* This forces readahead on a given range of bytes in an inode */ |
| 3428 | static inline void btrfs_force_ra(struct address_space *mapping, |
| 3429 | struct file_ra_state *ra, struct file *file, |
| 3430 | pgoff_t offset, unsigned long req_size) |
| 3431 | { |
| 3432 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); |
| 3433 | } |
| 3434 | |
Chris Mason | 3de4586 | 2008-11-17 21:02:50 -0500 | [diff] [blame] | 3435 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
| 3436 | int btrfs_set_inode_index(struct inode *dir, u64 *index); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3437 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
| 3438 | struct btrfs_root *root, |
| 3439 | struct inode *dir, struct inode *inode, |
| 3440 | const char *name, int name_len); |
| 3441 | int btrfs_add_link(struct btrfs_trans_handle *trans, |
| 3442 | struct inode *parent_inode, struct inode *inode, |
| 3443 | const char *name, int name_len, int add_backref, u64 index); |
Yan, Zheng | 4df27c4d | 2009-09-21 15:56:00 -0400 | [diff] [blame] | 3444 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
| 3445 | struct btrfs_root *root, |
| 3446 | struct inode *dir, u64 objectid, |
| 3447 | const char *name, int name_len); |
Josef Bacik | 2aaa665 | 2012-08-29 14:27:18 -0400 | [diff] [blame] | 3448 | int btrfs_truncate_page(struct inode *inode, loff_t from, loff_t len, |
| 3449 | int front); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 3450 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
| 3451 | struct btrfs_root *root, |
| 3452 | struct inode *inode, u64 new_size, |
| 3453 | u32 min_type); |
| 3454 | |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 3455 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
Josef Bacik | 2ac55d4 | 2010-02-03 19:33:23 +0000 | [diff] [blame] | 3456 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
| 3457 | struct extent_state **cached_state); |
Chris Mason | f421950 | 2008-07-22 11:18:09 -0400 | [diff] [blame] | 3458 | int btrfs_writepages(struct address_space *mapping, |
| 3459 | struct writeback_control *wbc); |
Yan Zheng | d2fb343 | 2008-12-11 16:30:39 -0500 | [diff] [blame] | 3460 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
Josef Bacik | d82a6f1 | 2011-05-11 15:26:06 -0400 | [diff] [blame] | 3461 | struct btrfs_root *new_root, u64 new_dirid); |
Chris Mason | 239b14b | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 3462 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
Chris Mason | c8b9781 | 2008-10-29 14:49:59 -0400 | [diff] [blame] | 3463 | size_t size, struct bio *bio, unsigned long bio_flags); |
Chris Mason | 239b14b | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 3464 | |
Nick Piggin | c2ec175 | 2009-03-31 15:23:21 -0700 | [diff] [blame] | 3465 | 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] | 3466 | int btrfs_readpage(struct file *file, struct page *page); |
Al Viro | bd55597 | 2010-06-07 11:35:40 -0400 | [diff] [blame] | 3467 | void btrfs_evict_inode(struct inode *inode); |
Christoph Hellwig | a9185b4 | 2010-03-05 09:21:37 +0100 | [diff] [blame] | 3468 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
Josef Bacik | 22c44fe | 2011-11-30 10:45:38 -0500 | [diff] [blame] | 3469 | int btrfs_dirty_inode(struct inode *inode); |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3470 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
| 3471 | void btrfs_destroy_inode(struct inode *inode); |
Al Viro | 45321ac | 2010-06-07 13:43:19 -0400 | [diff] [blame] | 3472 | int btrfs_drop_inode(struct inode *inode); |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3473 | int btrfs_init_cachep(void); |
| 3474 | void btrfs_destroy_cachep(void); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3475 | long btrfs_ioctl_trans_end(struct file *file); |
Balaji Rao | 1a54ef8 | 2008-07-21 02:01:04 +0530 | [diff] [blame] | 3476 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
Josef Bacik | 73f7341 | 2009-12-04 17:38:27 +0000 | [diff] [blame] | 3477 | struct btrfs_root *root, int *was_new); |
Chris Mason | a52d9a8 | 2007-08-27 16:49:44 -0400 | [diff] [blame] | 3478 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
David Sterba | 306e16c | 2011-04-19 14:29:38 +0200 | [diff] [blame] | 3479 | size_t pg_offset, u64 start, u64 end, |
Chris Mason | a52d9a8 | 2007-08-27 16:49:44 -0400 | [diff] [blame] | 3480 | int create); |
| 3481 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
| 3482 | struct btrfs_root *root, |
| 3483 | struct inode *inode); |
Josef Bacik | be6aef6 | 2012-10-22 15:43:12 -0400 | [diff] [blame] | 3484 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
| 3485 | struct btrfs_root *root, struct inode *inode); |
Zheng Yan | 5b21f2e | 2008-09-26 10:05:38 -0400 | [diff] [blame] | 3486 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
| 3487 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); |
Josef Bacik | 66b4ffd | 2011-01-31 16:22:42 -0500 | [diff] [blame] | 3488 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
Yan, Zheng | d68fc57 | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 3489 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
| 3490 | struct btrfs_root *root); |
Josef Bacik | a41ad39 | 2011-01-31 15:30:16 -0500 | [diff] [blame] | 3491 | 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] | 3492 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
Yan, Zheng | 24bbcf0 | 2009-11-12 09:36:34 +0000 | [diff] [blame] | 3493 | void btrfs_add_delayed_iput(struct inode *inode); |
| 3494 | void btrfs_run_delayed_iputs(struct btrfs_root *root); |
Yan, Zheng | efa5646 | 2010-05-16 10:49:59 -0400 | [diff] [blame] | 3495 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
| 3496 | u64 start, u64 num_bytes, u64 min_size, |
| 3497 | loff_t actual_len, u64 *alloc_hint); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 3498 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
| 3499 | struct btrfs_trans_handle *trans, int mode, |
| 3500 | u64 start, u64 num_bytes, u64 min_size, |
| 3501 | loff_t actual_len, u64 *alloc_hint); |
Alexey Dobriyan | 82d339d | 2009-10-09 09:54:36 -0400 | [diff] [blame] | 3502 | extern const struct dentry_operations btrfs_dentry_operations; |
Christoph Hellwig | f46b5a6 | 2008-06-11 21:53:53 -0400 | [diff] [blame] | 3503 | |
| 3504 | /* ioctl.c */ |
| 3505 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
Christoph Hellwig | 6cbff00 | 2009-04-17 10:37:41 +0200 | [diff] [blame] | 3506 | void btrfs_update_iflags(struct inode *inode); |
| 3507 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 3508 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
| 3509 | struct btrfs_ioctl_defrag_range_args *range, |
| 3510 | u64 newer_than, unsigned long max_pages); |
Stefan Behrens | 5af3e8c | 2012-08-01 18:56:49 +0200 | [diff] [blame] | 3511 | void btrfs_get_block_group_info(struct list_head *groups_list, |
| 3512 | struct btrfs_ioctl_space_info *space); |
| 3513 | |
Chris Mason | 39279cc | 2007-06-12 06:35:45 -0400 | [diff] [blame] | 3514 | /* file.c */ |
Miao Xie | 9247f31 | 2012-11-26 09:24:43 +0000 | [diff] [blame] | 3515 | int btrfs_auto_defrag_init(void); |
| 3516 | void btrfs_auto_defrag_exit(void); |
Chris Mason | 4cb5300 | 2011-05-24 15:35:30 -0400 | [diff] [blame] | 3517 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
| 3518 | struct inode *inode); |
| 3519 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
Miao Xie | 26176e7 | 2012-11-26 09:26:20 +0000 | [diff] [blame] | 3520 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
Josef Bacik | 02c24a8 | 2011-07-16 20:44:56 -0400 | [diff] [blame] | 3521 | 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] | 3522 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
| 3523 | int skip_pinned); |
Josef Bacik | 5dc562c | 2012-08-17 13:14:17 -0400 | [diff] [blame] | 3524 | int btrfs_replace_extent_cache(struct inode *inode, struct extent_map *replace, |
| 3525 | u64 start, u64 end, int skip_pinned, |
| 3526 | int modified); |
Alexey Dobriyan | 828c095 | 2009-10-01 15:43:56 -0700 | [diff] [blame] | 3527 | extern const struct file_operations btrfs_file_operations; |
Josef Bacik | 5dc562c | 2012-08-17 13:14:17 -0400 | [diff] [blame] | 3528 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
| 3529 | struct btrfs_root *root, struct inode *inode, |
| 3530 | struct btrfs_path *path, u64 start, u64 end, |
Josef Bacik | 2aaa665 | 2012-08-29 14:27:18 -0400 | [diff] [blame] | 3531 | u64 *drop_end, int drop_cache); |
Josef Bacik | 5dc562c | 2012-08-17 13:14:17 -0400 | [diff] [blame] | 3532 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
| 3533 | struct btrfs_root *root, struct inode *inode, u64 start, |
Josef Bacik | 2671485 | 2012-08-29 12:24:27 -0400 | [diff] [blame] | 3534 | u64 end, int drop_cache); |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 3535 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
Yan Zheng | d899e05 | 2008-10-30 14:25:28 -0400 | [diff] [blame] | 3536 | struct inode *inode, u64 start, u64 end); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3537 | int btrfs_release_file(struct inode *inode, struct file *file); |
Josef Bacik | be1a12a | 2011-04-06 13:05:22 -0400 | [diff] [blame] | 3538 | void btrfs_drop_pages(struct page **pages, size_t num_pages); |
| 3539 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, |
| 3540 | struct page **pages, size_t num_pages, |
| 3541 | loff_t pos, size_t write_bytes, |
| 3542 | struct extent_state **cached); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3543 | |
Chris Mason | 6702ed4 | 2007-08-07 16:15:09 -0400 | [diff] [blame] | 3544 | /* tree-defrag.c */ |
| 3545 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, |
| 3546 | struct btrfs_root *root, int cache_only); |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 3547 | |
| 3548 | /* sysfs.c */ |
| 3549 | int btrfs_init_sysfs(void); |
| 3550 | void btrfs_exit_sysfs(void); |
Josef Bacik | 58176a9 | 2007-08-29 15:47:34 -0400 | [diff] [blame] | 3551 | |
Josef Bacik | 5103e94 | 2007-11-16 11:45:54 -0500 | [diff] [blame] | 3552 | /* xattr.c */ |
| 3553 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
Josef Bacik | 6099afe | 2008-07-24 12:16:03 -0400 | [diff] [blame] | 3554 | |
Chris Mason | edbd8d4 | 2007-12-21 16:27:24 -0500 | [diff] [blame] | 3555 | /* super.c */ |
Christoph Hellwig | edf24ab | 2008-06-10 10:40:29 -0400 | [diff] [blame] | 3556 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
Sage Weil | 6bf13c0 | 2008-06-10 10:07:39 -0400 | [diff] [blame] | 3557 | int btrfs_sync_fs(struct super_block *sb, int wait); |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3558 | |
| 3559 | #ifdef CONFIG_PRINTK |
| 3560 | __printf(2, 3) |
Jeff Mahoney | 4da3511 | 2012-03-01 14:57:30 +0100 | [diff] [blame] | 3561 | void btrfs_printk(struct btrfs_fs_info *fs_info, const char *fmt, ...); |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3562 | #else |
| 3563 | static inline __printf(2, 3) |
| 3564 | void btrfs_printk(struct btrfs_fs_info *fs_info, const char *fmt, ...) |
| 3565 | { |
| 3566 | } |
| 3567 | #endif |
| 3568 | |
| 3569 | __printf(5, 6) |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3570 | 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] | 3571 | unsigned int line, int errno, const char *fmt, ...); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3572 | |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3573 | |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 3574 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
| 3575 | struct btrfs_root *root, const char *function, |
| 3576 | unsigned int line, int errno); |
| 3577 | |
Mitch Harder | 2b0ce2c | 2012-07-24 11:58:43 -0600 | [diff] [blame] | 3578 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
| 3579 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) |
| 3580 | |
| 3581 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, |
| 3582 | u64 flag) |
| 3583 | { |
| 3584 | struct btrfs_super_block *disk_super; |
| 3585 | u64 features; |
| 3586 | |
| 3587 | disk_super = fs_info->super_copy; |
| 3588 | features = btrfs_super_incompat_flags(disk_super); |
| 3589 | if (!(features & flag)) { |
| 3590 | features |= flag; |
| 3591 | btrfs_set_super_incompat_flags(disk_super, features); |
| 3592 | } |
| 3593 | } |
| 3594 | |
David Sterba | 005d642 | 2012-09-18 07:52:32 -0600 | [diff] [blame] | 3595 | /* |
| 3596 | * Call btrfs_abort_transaction as early as possible when an error condition is |
| 3597 | * detected, that way the exact line number is reported. |
| 3598 | */ |
| 3599 | |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 3600 | #define btrfs_abort_transaction(trans, root, errno) \ |
| 3601 | do { \ |
| 3602 | __btrfs_abort_transaction(trans, root, __func__, \ |
| 3603 | __LINE__, errno); \ |
| 3604 | } while (0) |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3605 | |
| 3606 | #define btrfs_std_error(fs_info, errno) \ |
| 3607 | do { \ |
| 3608 | if ((errno)) \ |
Jeff Mahoney | 4da3511 | 2012-03-01 14:57:30 +0100 | [diff] [blame] | 3609 | __btrfs_std_error((fs_info), __func__, \ |
| 3610 | __LINE__, (errno), NULL); \ |
| 3611 | } while (0) |
| 3612 | |
| 3613 | #define btrfs_error(fs_info, errno, fmt, args...) \ |
| 3614 | do { \ |
| 3615 | __btrfs_std_error((fs_info), __func__, __LINE__, \ |
| 3616 | (errno), fmt, ##args); \ |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 3617 | } while (0) |
Josef Bacik | 33268ea | 2008-07-24 12:16:36 -0400 | [diff] [blame] | 3618 | |
Joe Perches | 533574c | 2012-07-30 14:40:13 -0700 | [diff] [blame] | 3619 | __printf(5, 6) |
Jeff Mahoney | 8c34293 | 2011-10-03 23:22:31 -0400 | [diff] [blame] | 3620 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, |
| 3621 | unsigned int line, int errno, const char *fmt, ...); |
| 3622 | |
| 3623 | #define btrfs_panic(fs_info, errno, fmt, args...) \ |
| 3624 | do { \ |
| 3625 | struct btrfs_fs_info *_i = (fs_info); \ |
| 3626 | __btrfs_panic(_i, __func__, __LINE__, errno, fmt, ##args); \ |
| 3627 | BUG_ON(!(_i->mount_opt & BTRFS_MOUNT_PANIC_ON_FATAL_ERROR)); \ |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 3628 | } while (0) |
| 3629 | |
| 3630 | /* acl.c */ |
| 3631 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
Christoph Hellwig | 4e34e71 | 2011-07-23 17:37:31 +0200 | [diff] [blame] | 3632 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 3633 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
| 3634 | struct inode *inode, struct inode *dir); |
| 3635 | int btrfs_acl_chmod(struct inode *inode); |
Li Zefan | 9b89d95 | 2011-07-14 03:17:39 +0000 | [diff] [blame] | 3636 | #else |
Linus Torvalds | ed8f373 | 2011-08-02 21:14:05 -1000 | [diff] [blame] | 3637 | #define btrfs_get_acl NULL |
Li Zefan | 9b89d95 | 2011-07-14 03:17:39 +0000 | [diff] [blame] | 3638 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
| 3639 | struct inode *inode, struct inode *dir) |
| 3640 | { |
| 3641 | return 0; |
| 3642 | } |
| 3643 | static inline int btrfs_acl_chmod(struct inode *inode) |
| 3644 | { |
| 3645 | return 0; |
| 3646 | } |
| 3647 | #endif |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 3648 | |
| 3649 | /* relocation.c */ |
| 3650 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); |
| 3651 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
| 3652 | struct btrfs_root *root); |
| 3653 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, |
| 3654 | struct btrfs_root *root); |
| 3655 | int btrfs_recover_relocation(struct btrfs_root *root); |
| 3656 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); |
| 3657 | void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
| 3658 | struct btrfs_root *root, struct extent_buffer *buf, |
| 3659 | struct extent_buffer *cow); |
| 3660 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, |
| 3661 | struct btrfs_pending_snapshot *pending, |
| 3662 | u64 *bytes_to_reserve); |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 3663 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 3664 | struct btrfs_pending_snapshot *pending); |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 3665 | |
| 3666 | /* scrub.c */ |
Stefan Behrens | aa1b8cd | 2012-11-05 17:03:39 +0100 | [diff] [blame] | 3667 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
| 3668 | u64 end, struct btrfs_scrub_progress *progress, |
Stefan Behrens | 63a212a | 2012-11-05 18:29:28 +0100 | [diff] [blame] | 3669 | int readonly, int is_dev_replace); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 3670 | void btrfs_scrub_pause(struct btrfs_root *root); |
| 3671 | void btrfs_scrub_pause_super(struct btrfs_root *root); |
| 3672 | void btrfs_scrub_continue(struct btrfs_root *root); |
| 3673 | void btrfs_scrub_continue_super(struct btrfs_root *root); |
Stefan Behrens | aa1b8cd | 2012-11-05 17:03:39 +0100 | [diff] [blame] | 3674 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
| 3675 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, |
| 3676 | struct btrfs_device *dev); |
Arne Jansen | a2de733 | 2011-03-08 14:14:00 +0100 | [diff] [blame] | 3677 | int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid); |
| 3678 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, |
| 3679 | struct btrfs_scrub_progress *progress); |
| 3680 | |
Arne Jansen | 7414a03 | 2011-05-23 14:33:49 +0200 | [diff] [blame] | 3681 | /* reada.c */ |
| 3682 | struct reada_control { |
| 3683 | struct btrfs_root *root; /* tree to prefetch */ |
| 3684 | struct btrfs_key key_start; |
| 3685 | struct btrfs_key key_end; /* exclusive */ |
| 3686 | atomic_t elems; |
| 3687 | struct kref refcnt; |
| 3688 | wait_queue_head_t wait; |
| 3689 | }; |
| 3690 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, |
| 3691 | struct btrfs_key *start, struct btrfs_key *end); |
| 3692 | int btrfs_reada_wait(void *handle); |
| 3693 | void btrfs_reada_detach(void *handle); |
| 3694 | int btree_readahead_hook(struct btrfs_root *root, struct extent_buffer *eb, |
| 3695 | u64 start, int err); |
| 3696 | |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 3697 | /* qgroup.c */ |
| 3698 | struct qgroup_update { |
Jan Schmidt | 64947ec | 2012-05-16 16:57:09 +0200 | [diff] [blame] | 3699 | struct list_head list; |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 3700 | struct btrfs_delayed_ref_node *node; |
| 3701 | struct btrfs_delayed_extent_op *extent_op; |
Jan Schmidt | 64947ec | 2012-05-16 16:57:09 +0200 | [diff] [blame] | 3702 | }; |
| 3703 | |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 3704 | int btrfs_quota_enable(struct btrfs_trans_handle *trans, |
| 3705 | struct btrfs_fs_info *fs_info); |
| 3706 | int btrfs_quota_disable(struct btrfs_trans_handle *trans, |
| 3707 | struct btrfs_fs_info *fs_info); |
| 3708 | int btrfs_quota_rescan(struct btrfs_fs_info *fs_info); |
| 3709 | int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, |
| 3710 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); |
| 3711 | int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans, |
| 3712 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); |
| 3713 | int btrfs_create_qgroup(struct btrfs_trans_handle *trans, |
| 3714 | struct btrfs_fs_info *fs_info, u64 qgroupid, |
| 3715 | char *name); |
| 3716 | int btrfs_remove_qgroup(struct btrfs_trans_handle *trans, |
| 3717 | struct btrfs_fs_info *fs_info, u64 qgroupid); |
| 3718 | int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, |
| 3719 | struct btrfs_fs_info *fs_info, u64 qgroupid, |
| 3720 | struct btrfs_qgroup_limit *limit); |
| 3721 | int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info); |
| 3722 | void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info); |
| 3723 | struct btrfs_delayed_extent_op; |
| 3724 | int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans, |
| 3725 | struct btrfs_delayed_ref_node *node, |
| 3726 | struct btrfs_delayed_extent_op *extent_op); |
| 3727 | int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, |
| 3728 | struct btrfs_fs_info *fs_info, |
| 3729 | struct btrfs_delayed_ref_node *node, |
| 3730 | struct btrfs_delayed_extent_op *extent_op); |
| 3731 | int btrfs_run_qgroups(struct btrfs_trans_handle *trans, |
| 3732 | struct btrfs_fs_info *fs_info); |
| 3733 | int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, |
| 3734 | struct btrfs_fs_info *fs_info, u64 srcid, u64 objectid, |
| 3735 | struct btrfs_qgroup_inherit *inherit); |
| 3736 | int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes); |
| 3737 | void btrfs_qgroup_free(struct btrfs_root *root, u64 num_bytes); |
| 3738 | |
| 3739 | void assert_qgroups_uptodate(struct btrfs_trans_handle *trans); |
Jan Schmidt | bd989ba | 2012-05-16 17:18:50 +0200 | [diff] [blame] | 3740 | |
Jan Schmidt | 95a0607 | 2012-05-29 17:06:54 +0200 | [diff] [blame] | 3741 | static inline int is_fstree(u64 rootid) |
| 3742 | { |
| 3743 | if (rootid == BTRFS_FS_TREE_OBJECTID || |
| 3744 | (s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID) |
| 3745 | return 1; |
| 3746 | return 0; |
| 3747 | } |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 3748 | #endif |