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6cbd5570 CM |
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 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
6da6abae | 22 | #include <linux/version.h> |
810191ff CM |
23 | #include <linux/mm.h> |
24 | #include <linux/highmem.h> | |
e20d96d6 | 25 | #include <linux/fs.h> |
58176a96 | 26 | #include <linux/completion.h> |
04160088 | 27 | #include <linux/backing-dev.h> |
e6dcd2dc | 28 | #include <linux/wait.h> |
479965d6 | 29 | #include <asm/kmap_types.h> |
8ef97622 | 30 | #include "bit-radix.h" |
d1310b2e | 31 | #include "extent_io.h" |
5f39d397 | 32 | #include "extent_map.h" |
8b712842 | 33 | #include "async-thread.h" |
e20d96d6 | 34 | |
e089f05c | 35 | struct btrfs_trans_handle; |
79154b1b | 36 | struct btrfs_transaction; |
35b7e476 CM |
37 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
38 | extern struct kmem_cache *btrfs_transaction_cachep; | |
39 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 40 | extern struct kmem_cache *btrfs_path_cachep; |
e6dcd2dc | 41 | struct btrfs_ordered_sum; |
e089f05c | 42 | |
8a4b83cc | 43 | #define BTRFS_MAGIC "_B5RfS_M" |
eb60ceac | 44 | |
f6dbff55 | 45 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 CM |
46 | |
47 | /* holds pointers to all of the tree roots */ | |
6407bf6d | 48 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
49 | |
50 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 51 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 52 | |
0b86a832 CM |
53 | /* |
54 | * chunk tree stores translations from logical -> physical block numbering | |
55 | * the super block points to the chunk tree | |
56 | */ | |
e085def2 | 57 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
58 | |
59 | /* | |
60 | * stores information about which areas of a given device are in use. | |
61 | * one per device. The tree of tree roots points to the device tree | |
62 | */ | |
e085def2 CM |
63 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
64 | ||
65 | /* one per subvolume, storing files and directories */ | |
66 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
67 | ||
68 | /* directory objectid inside the root tree */ | |
69 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 CM |
70 | |
71 | /* | |
72 | * All files have objectids higher than this. | |
73 | */ | |
f6dbff55 | 74 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
e17cade2 | 75 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 76 | |
0b86a832 CM |
77 | |
78 | /* | |
79 | * the device items go into the chunk tree. The key is in the form | |
80 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
81 | */ | |
82 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
83 | ||
e20d96d6 CM |
84 | /* |
85 | * we can actually store much bigger names, but lets not confuse the rest | |
86 | * of linux | |
87 | */ | |
88 | #define BTRFS_NAME_LEN 255 | |
89 | ||
f254e52c CM |
90 | /* 32 bytes in various csum fields */ |
91 | #define BTRFS_CSUM_SIZE 32 | |
509659cd CM |
92 | /* four bytes for CRC32 */ |
93 | #define BTRFS_CRC32_SIZE 4 | |
3954401f | 94 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 95 | |
fabb5681 CM |
96 | #define BTRFS_FT_UNKNOWN 0 |
97 | #define BTRFS_FT_REG_FILE 1 | |
98 | #define BTRFS_FT_DIR 2 | |
99 | #define BTRFS_FT_CHRDEV 3 | |
100 | #define BTRFS_FT_BLKDEV 4 | |
101 | #define BTRFS_FT_FIFO 5 | |
102 | #define BTRFS_FT_SOCK 6 | |
103 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
104 | #define BTRFS_FT_XATTR 8 |
105 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 106 | |
fec577fb CM |
107 | /* |
108 | * the key defines the order in the tree, and so it also defines (optimal) | |
109 | * block layout. objectid corresonds to the inode number. The flags | |
110 | * tells us things about the object, and is a kind of stream selector. | |
111 | * so for a given inode, keys with flags of 1 might refer to the inode | |
112 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
113 | * may point to extents. | |
114 | * | |
115 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
116 | * |
117 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
118 | * in cpu native order. Otherwise they are identical and their sizes | |
119 | * should be the same (ie both packed) | |
fec577fb | 120 | */ |
e2fa7227 CM |
121 | struct btrfs_disk_key { |
122 | __le64 objectid; | |
5f39d397 | 123 | u8 type; |
70b2befd | 124 | __le64 offset; |
e2fa7227 CM |
125 | } __attribute__ ((__packed__)); |
126 | ||
127 | struct btrfs_key { | |
eb60ceac | 128 | u64 objectid; |
5f39d397 | 129 | u8 type; |
70b2befd | 130 | u64 offset; |
eb60ceac CM |
131 | } __attribute__ ((__packed__)); |
132 | ||
0b86a832 CM |
133 | struct btrfs_mapping_tree { |
134 | struct extent_map_tree map_tree; | |
135 | }; | |
136 | ||
e17cade2 | 137 | #define BTRFS_UUID_SIZE 16 |
0b86a832 CM |
138 | struct btrfs_dev_item { |
139 | /* the internal btrfs device id */ | |
140 | __le64 devid; | |
141 | ||
142 | /* size of the device */ | |
143 | __le64 total_bytes; | |
144 | ||
145 | /* bytes used */ | |
146 | __le64 bytes_used; | |
147 | ||
148 | /* optimal io alignment for this device */ | |
149 | __le32 io_align; | |
150 | ||
151 | /* optimal io width for this device */ | |
152 | __le32 io_width; | |
153 | ||
154 | /* minimal io size for this device */ | |
155 | __le32 sector_size; | |
156 | ||
0b86a832 CM |
157 | /* type and info about this device */ |
158 | __le64 type; | |
159 | ||
e17cade2 CM |
160 | /* grouping information for allocation decisions */ |
161 | __le32 dev_group; | |
162 | ||
163 | /* seek speed 0-100 where 100 is fastest */ | |
164 | u8 seek_speed; | |
165 | ||
166 | /* bandwidth 0-100 where 100 is fastest */ | |
167 | u8 bandwidth; | |
168 | ||
0d81ba5d | 169 | /* btrfs generated uuid for this device */ |
e17cade2 | 170 | u8 uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
171 | } __attribute__ ((__packed__)); |
172 | ||
173 | struct btrfs_stripe { | |
174 | __le64 devid; | |
175 | __le64 offset; | |
e17cade2 | 176 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
177 | } __attribute__ ((__packed__)); |
178 | ||
179 | struct btrfs_chunk { | |
e17cade2 CM |
180 | /* size of this chunk in bytes */ |
181 | __le64 length; | |
182 | ||
183 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 184 | __le64 owner; |
e17cade2 | 185 | |
0b86a832 CM |
186 | __le64 stripe_len; |
187 | __le64 type; | |
188 | ||
189 | /* optimal io alignment for this chunk */ | |
190 | __le32 io_align; | |
191 | ||
192 | /* optimal io width for this chunk */ | |
193 | __le32 io_width; | |
194 | ||
195 | /* minimal io size for this chunk */ | |
196 | __le32 sector_size; | |
197 | ||
198 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
199 | * item in the btree | |
200 | */ | |
201 | __le16 num_stripes; | |
321aecc6 CM |
202 | |
203 | /* sub stripes only matter for raid10 */ | |
204 | __le16 sub_stripes; | |
0b86a832 CM |
205 | struct btrfs_stripe stripe; |
206 | /* additional stripes go here */ | |
207 | } __attribute__ ((__packed__)); | |
208 | ||
209 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) | |
210 | { | |
211 | BUG_ON(num_stripes == 0); | |
212 | return sizeof(struct btrfs_chunk) + | |
213 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
214 | } | |
215 | ||
5f39d397 | 216 | #define BTRFS_FSID_SIZE 16 |
63b10fc4 CM |
217 | #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0) |
218 | ||
fec577fb CM |
219 | /* |
220 | * every tree block (leaf or node) starts with this header. | |
221 | */ | |
bb492bb0 | 222 | struct btrfs_header { |
e17cade2 | 223 | /* these first four must match the super block */ |
f254e52c | 224 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 225 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 226 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 227 | __le64 flags; |
e17cade2 CM |
228 | |
229 | /* allowed to be different from the super from here on down */ | |
230 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 231 | __le64 generation; |
4d775673 | 232 | __le64 owner; |
5f39d397 | 233 | __le32 nritems; |
9a6f11ed | 234 | u8 level; |
eb60ceac CM |
235 | } __attribute__ ((__packed__)); |
236 | ||
5f39d397 | 237 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
123abc88 | 238 | sizeof(struct btrfs_header)) / \ |
74493f7a | 239 | sizeof(struct btrfs_key_ptr)) |
123abc88 | 240 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 241 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
242 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
243 | sizeof(struct btrfs_item) - \ | |
244 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 245 | |
0b86a832 CM |
246 | |
247 | /* | |
248 | * this is a very generous portion of the super block, giving us | |
249 | * room to translate 14 chunks with 3 stripes each. | |
250 | */ | |
251 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 252 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 253 | |
fec577fb CM |
254 | /* |
255 | * the super block basically lists the main trees of the FS | |
256 | * it currently lacks any block count etc etc | |
257 | */ | |
234b63a0 | 258 | struct btrfs_super_block { |
f254e52c | 259 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 260 | /* the first 4 fields must match struct btrfs_header */ |
3768f368 | 261 | u8 fsid[16]; /* FS specific uuid */ |
db94535d | 262 | __le64 bytenr; /* this block number */ |
63b10fc4 | 263 | __le64 flags; |
e17cade2 CM |
264 | |
265 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 266 | __le64 magic; |
3768f368 CM |
267 | __le64 generation; |
268 | __le64 root; | |
0b86a832 | 269 | __le64 chunk_root; |
db94535d CM |
270 | __le64 total_bytes; |
271 | __le64 bytes_used; | |
2e635a27 | 272 | __le64 root_dir_objectid; |
8a4b83cc | 273 | __le64 num_devices; |
5f39d397 CM |
274 | __le32 sectorsize; |
275 | __le32 nodesize; | |
276 | __le32 leafsize; | |
87ee04eb | 277 | __le32 stripesize; |
0b86a832 | 278 | __le32 sys_chunk_array_size; |
db94535d | 279 | u8 root_level; |
0b86a832 | 280 | u8 chunk_root_level; |
0d81ba5d | 281 | struct btrfs_dev_item dev_item; |
7ae9c09d | 282 | char label[BTRFS_LABEL_SIZE]; |
0b86a832 | 283 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
284 | } __attribute__ ((__packed__)); |
285 | ||
fec577fb | 286 | /* |
62e2749e | 287 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
288 | * the item in the leaf (relative to the start of the data area) |
289 | */ | |
0783fcfc | 290 | struct btrfs_item { |
e2fa7227 | 291 | struct btrfs_disk_key key; |
123abc88 | 292 | __le32 offset; |
5f39d397 | 293 | __le32 size; |
eb60ceac CM |
294 | } __attribute__ ((__packed__)); |
295 | ||
fec577fb CM |
296 | /* |
297 | * leaves have an item area and a data area: | |
298 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
299 | * | |
300 | * The data is separate from the items to get the keys closer together | |
301 | * during searches. | |
302 | */ | |
234b63a0 | 303 | struct btrfs_leaf { |
bb492bb0 | 304 | struct btrfs_header header; |
123abc88 | 305 | struct btrfs_item items[]; |
eb60ceac CM |
306 | } __attribute__ ((__packed__)); |
307 | ||
fec577fb CM |
308 | /* |
309 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
310 | * other blocks | |
311 | */ | |
123abc88 CM |
312 | struct btrfs_key_ptr { |
313 | struct btrfs_disk_key key; | |
314 | __le64 blockptr; | |
74493f7a | 315 | __le64 generation; |
123abc88 CM |
316 | } __attribute__ ((__packed__)); |
317 | ||
234b63a0 | 318 | struct btrfs_node { |
bb492bb0 | 319 | struct btrfs_header header; |
123abc88 | 320 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
321 | } __attribute__ ((__packed__)); |
322 | ||
fec577fb | 323 | /* |
234b63a0 CM |
324 | * btrfs_paths remember the path taken from the root down to the leaf. |
325 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
326 | * to any other levels that are present. |
327 | * | |
328 | * The slots array records the index of the item or block pointer | |
329 | * used while walking the tree. | |
330 | */ | |
234b63a0 | 331 | struct btrfs_path { |
5f39d397 | 332 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 333 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
334 | /* if there is real range locking, this locks field will change */ |
335 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 336 | int reada; |
925baedd CM |
337 | /* keep some upper locks as we walk down */ |
338 | int keep_locks; | |
5cd57b2c | 339 | int skip_locking; |
6702ed49 | 340 | int lowest_level; |
eb60ceac | 341 | }; |
5de08d7d | 342 | |
62e2749e CM |
343 | /* |
344 | * items in the extent btree are used to record the objectid of the | |
345 | * owner of the block and the number of references | |
346 | */ | |
347 | struct btrfs_extent_item { | |
348 | __le32 refs; | |
74493f7a CM |
349 | } __attribute__ ((__packed__)); |
350 | ||
351 | struct btrfs_extent_ref { | |
352 | __le64 root; | |
353 | __le64 generation; | |
354 | __le64 objectid; | |
355 | __le64 offset; | |
62e2749e CM |
356 | } __attribute__ ((__packed__)); |
357 | ||
0b86a832 CM |
358 | /* dev extents record free space on individual devices. The owner |
359 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 360 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
361 | */ |
362 | struct btrfs_dev_extent { | |
e17cade2 CM |
363 | __le64 chunk_tree; |
364 | __le64 chunk_objectid; | |
365 | __le64 chunk_offset; | |
0b86a832 | 366 | __le64 length; |
e17cade2 | 367 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
368 | } __attribute__ ((__packed__)); |
369 | ||
3954401f CM |
370 | struct btrfs_inode_ref { |
371 | __le16 name_len; | |
372 | /* name goes here */ | |
373 | } __attribute__ ((__packed__)); | |
374 | ||
0b86a832 | 375 | struct btrfs_timespec { |
f254e52c | 376 | __le64 sec; |
1e1d2701 CM |
377 | __le32 nsec; |
378 | } __attribute__ ((__packed__)); | |
379 | ||
380 | /* | |
381 | * there is no padding here on purpose. If you want to extent the inode, | |
382 | * make a new item type | |
383 | */ | |
384 | struct btrfs_inode_item { | |
385 | __le64 generation; | |
386 | __le64 size; | |
387 | __le64 nblocks; | |
31f3c99b | 388 | __le64 block_group; |
1e1d2701 CM |
389 | __le32 nlink; |
390 | __le32 uid; | |
391 | __le32 gid; | |
392 | __le32 mode; | |
0b86a832 | 393 | __le64 rdev; |
1e1d2701 CM |
394 | __le16 flags; |
395 | __le16 compat_flags; | |
0b86a832 CM |
396 | struct btrfs_timespec atime; |
397 | struct btrfs_timespec ctime; | |
398 | struct btrfs_timespec mtime; | |
399 | struct btrfs_timespec otime; | |
1e1d2701 CM |
400 | } __attribute__ ((__packed__)); |
401 | ||
62e2749e | 402 | struct btrfs_dir_item { |
d6e4a428 | 403 | struct btrfs_disk_key location; |
5103e947 | 404 | __le16 data_len; |
a8a2ee0c | 405 | __le16 name_len; |
62e2749e CM |
406 | u8 type; |
407 | } __attribute__ ((__packed__)); | |
408 | ||
409 | struct btrfs_root_item { | |
d6e4a428 CM |
410 | struct btrfs_inode_item inode; |
411 | __le64 root_dirid; | |
db94535d CM |
412 | __le64 bytenr; |
413 | __le64 byte_limit; | |
414 | __le64 bytes_used; | |
5eda7b5e | 415 | __le32 flags; |
62e2749e | 416 | __le32 refs; |
5eda7b5e CM |
417 | struct btrfs_disk_key drop_progress; |
418 | u8 drop_level; | |
db94535d | 419 | u8 level; |
9f5fae2f | 420 | } __attribute__ ((__packed__)); |
62e2749e | 421 | |
236454df CM |
422 | #define BTRFS_FILE_EXTENT_REG 0 |
423 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
424 | ||
9f5fae2f | 425 | struct btrfs_file_extent_item { |
71951f35 | 426 | __le64 generation; |
236454df | 427 | u8 type; |
9f5fae2f CM |
428 | /* |
429 | * disk space consumed by the extent, checksum blocks are included | |
430 | * in these numbers | |
431 | */ | |
db94535d CM |
432 | __le64 disk_bytenr; |
433 | __le64 disk_num_bytes; | |
9f5fae2f | 434 | /* |
dee26a9f | 435 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
436 | * this extent record is for. This allows a file extent to point |
437 | * into the middle of an existing extent on disk, sharing it | |
438 | * between two snapshots (useful if some bytes in the middle of the | |
439 | * extent have changed | |
440 | */ | |
441 | __le64 offset; | |
442 | /* | |
443 | * the logical number of file blocks (no csums included) | |
444 | */ | |
db94535d | 445 | __le64 num_bytes; |
9f5fae2f CM |
446 | } __attribute__ ((__packed__)); |
447 | ||
f254e52c | 448 | struct btrfs_csum_item { |
509659cd | 449 | u8 csum; |
f254e52c CM |
450 | } __attribute__ ((__packed__)); |
451 | ||
0b86a832 CM |
452 | /* different types of block groups (and chunks) */ |
453 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
454 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
455 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 456 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 457 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 458 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 459 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
1e2677e0 | 460 | |
f84a8b36 | 461 | |
9078a3e1 CM |
462 | struct btrfs_block_group_item { |
463 | __le64 used; | |
0b86a832 CM |
464 | __le64 chunk_objectid; |
465 | __le64 flags; | |
9078a3e1 CM |
466 | } __attribute__ ((__packed__)); |
467 | ||
6324fbf3 CM |
468 | struct btrfs_space_info { |
469 | u64 flags; | |
470 | u64 total_bytes; | |
471 | u64 bytes_used; | |
472 | u64 bytes_pinned; | |
473 | int full; | |
0ef3e66b | 474 | int force_alloc; |
6324fbf3 CM |
475 | struct list_head list; |
476 | }; | |
477 | ||
9078a3e1 CM |
478 | struct btrfs_block_group_cache { |
479 | struct btrfs_key key; | |
480 | struct btrfs_block_group_item item; | |
6324fbf3 | 481 | struct btrfs_space_info *space_info; |
324ae4df | 482 | u64 pinned; |
0b86a832 CM |
483 | u64 flags; |
484 | int cached; | |
8f18cf13 | 485 | int ro; |
9078a3e1 | 486 | }; |
0b86a832 CM |
487 | |
488 | struct btrfs_device; | |
8a4b83cc | 489 | struct btrfs_fs_devices; |
9f5fae2f | 490 | struct btrfs_fs_info { |
5f39d397 | 491 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 492 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
493 | struct btrfs_root *extent_root; |
494 | struct btrfs_root *tree_root; | |
0b86a832 CM |
495 | struct btrfs_root *chunk_root; |
496 | struct btrfs_root *dev_root; | |
0f7d52f4 | 497 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 498 | |
d1310b2e CM |
499 | struct extent_io_tree free_space_cache; |
500 | struct extent_io_tree block_group_cache; | |
501 | struct extent_io_tree pinned_extents; | |
502 | struct extent_io_tree pending_del; | |
503 | struct extent_io_tree extent_ins; | |
1a5bc167 | 504 | |
0b86a832 CM |
505 | /* logical->physical extent mapping */ |
506 | struct btrfs_mapping_tree mapping_tree; | |
507 | ||
293ffd5f | 508 | u64 generation; |
15ee9bc7 | 509 | u64 last_trans_committed; |
b6cda9bc | 510 | unsigned long mount_opt; |
c59f8951 | 511 | u64 max_extent; |
6f568d35 | 512 | u64 max_inline; |
8f662a76 | 513 | u64 alloc_start; |
79154b1b | 514 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 515 | wait_queue_head_t transaction_throttle; |
4b52dff6 | 516 | struct btrfs_super_block super_copy; |
a061fc8d | 517 | struct btrfs_super_block super_for_commit; |
0b86a832 | 518 | struct block_device *__bdev; |
e20d96d6 | 519 | struct super_block *sb; |
d98237b3 | 520 | struct inode *btree_inode; |
04160088 | 521 | struct backing_dev_info bdi; |
19c00ddc | 522 | spinlock_t hash_lock; |
79154b1b | 523 | struct mutex trans_mutex; |
a74a4b97 CM |
524 | struct mutex transaction_kthread_mutex; |
525 | struct mutex cleaner_mutex; | |
925baedd CM |
526 | struct mutex alloc_mutex; |
527 | struct mutex chunk_mutex; | |
a2135011 | 528 | struct mutex drop_mutex; |
7d9eb12c | 529 | struct mutex volume_mutex; |
8fd17795 | 530 | struct list_head trans_list; |
19c00ddc | 531 | struct list_head hashers; |
facda1e7 | 532 | struct list_head dead_roots; |
cb03c743 | 533 | atomic_t nr_async_submits; |
ce9adaa5 | 534 | |
8b712842 CM |
535 | /* |
536 | * there is a pool of worker threads for checksumming during writes | |
537 | * and a pool for checksumming after reads. This is because readers | |
538 | * can run with FS locks held, and the writers may be waiting for | |
539 | * those locks. We don't want ordering in the pending list to cause | |
540 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
541 | * |
542 | * A third pool does submit_bio to avoid deadlocking with the other | |
543 | * two | |
8b712842 CM |
544 | */ |
545 | struct btrfs_workers workers; | |
546 | struct btrfs_workers endio_workers; | |
e6dcd2dc | 547 | struct btrfs_workers endio_write_workers; |
1cc127b5 | 548 | struct btrfs_workers submit_workers; |
247e743c CM |
549 | /* |
550 | * fixup workers take dirty pages that didn't properly go through | |
551 | * the cow mechanism and make them safe to write. It happens | |
552 | * for the sys_munmap function call path | |
553 | */ | |
554 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
555 | struct task_struct *transaction_kthread; |
556 | struct task_struct *cleaner_kthread; | |
4543df7e | 557 | int thread_pool_size; |
8b712842 | 558 | |
58176a96 JB |
559 | struct kobject super_kobj; |
560 | struct completion kobj_unregister; | |
e66f709b | 561 | int do_barriers; |
facda1e7 | 562 | int closing; |
a2135011 | 563 | atomic_t throttles; |
9f5fae2f | 564 | |
324ae4df | 565 | u64 total_pinned; |
0b86a832 CM |
566 | struct list_head dirty_cowonly_roots; |
567 | ||
8a4b83cc | 568 | struct btrfs_fs_devices *fs_devices; |
6324fbf3 | 569 | struct list_head space_info; |
1832a6d5 | 570 | spinlock_t delalloc_lock; |
cee36a03 | 571 | spinlock_t new_trans_lock; |
1832a6d5 | 572 | u64 delalloc_bytes; |
e18e4809 | 573 | u64 last_alloc; |
4529ba49 | 574 | u64 last_data_alloc; |
d18a2c44 CM |
575 | |
576 | u64 avail_data_alloc_bits; | |
577 | u64 avail_metadata_alloc_bits; | |
578 | u64 avail_system_alloc_bits; | |
579 | u64 data_alloc_profile; | |
580 | u64 metadata_alloc_profile; | |
581 | u64 system_alloc_profile; | |
788f20eb CM |
582 | |
583 | void *bdev_holder; | |
324ae4df | 584 | }; |
0b86a832 | 585 | |
9f5fae2f CM |
586 | /* |
587 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 588 | * and for the extent tree extent_root root. |
9f5fae2f CM |
589 | */ |
590 | struct btrfs_root { | |
5f39d397 | 591 | struct extent_buffer *node; |
925baedd CM |
592 | |
593 | /* the node lock is held while changing the node pointer */ | |
594 | spinlock_t node_lock; | |
595 | ||
5f39d397 | 596 | struct extent_buffer *commit_root; |
62e2749e CM |
597 | struct btrfs_root_item root_item; |
598 | struct btrfs_key root_key; | |
9f5fae2f | 599 | struct btrfs_fs_info *fs_info; |
0f7d52f4 | 600 | struct inode *inode; |
58176a96 JB |
601 | struct kobject root_kobj; |
602 | struct completion kobj_unregister; | |
a2135011 | 603 | struct mutex objectid_mutex; |
0f7d52f4 CM |
604 | u64 objectid; |
605 | u64 last_trans; | |
5f39d397 CM |
606 | |
607 | /* data allocations are done in sectorsize units */ | |
608 | u32 sectorsize; | |
609 | ||
610 | /* node allocations are done in nodesize units */ | |
611 | u32 nodesize; | |
612 | ||
613 | /* leaf allocations are done in leafsize units */ | |
614 | u32 leafsize; | |
615 | ||
87ee04eb CM |
616 | u32 stripesize; |
617 | ||
9f5fae2f | 618 | u32 type; |
1b05da2e CM |
619 | u64 highest_inode; |
620 | u64 last_inode_alloc; | |
9f3a7427 | 621 | int ref_cows; |
0b86a832 | 622 | int track_dirty; |
3f157a2f | 623 | u64 defrag_trans_start; |
6702ed49 | 624 | struct btrfs_key defrag_progress; |
0ef3e66b | 625 | struct btrfs_key defrag_max; |
6702ed49 CM |
626 | int defrag_running; |
627 | int defrag_level; | |
58176a96 | 628 | char *name; |
4313b399 | 629 | int in_sysfs; |
0b86a832 CM |
630 | |
631 | /* the dirty list is only used by non-reference counted roots */ | |
632 | struct list_head dirty_list; | |
62e2749e CM |
633 | }; |
634 | ||
1e1d2701 | 635 | /* |
0b86a832 | 636 | |
1e1d2701 CM |
637 | * inode items have the data typically returned from stat and store other |
638 | * info about object characteristics. There is one for every file and dir in | |
639 | * the FS | |
640 | */ | |
9078a3e1 | 641 | #define BTRFS_INODE_ITEM_KEY 1 |
3954401f CM |
642 | #define BTRFS_INODE_REF_KEY 2 |
643 | #define BTRFS_XATTR_ITEM_KEY 8 | |
9078a3e1 | 644 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
645 | |
646 | /* | |
647 | * dir items are the name -> inode pointers in a directory. There is one | |
648 | * for every name in a directory. | |
649 | */ | |
9078a3e1 CM |
650 | #define BTRFS_DIR_ITEM_KEY 16 |
651 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 652 | /* |
9078a3e1 | 653 | * extent data is for file data |
1e1d2701 | 654 | */ |
9078a3e1 | 655 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
656 | /* |
657 | * csum items have the checksums for data in the extents | |
658 | */ | |
9078a3e1 CM |
659 | #define BTRFS_CSUM_ITEM_KEY 19 |
660 | ||
661 | /* reserve 20-31 for other file stuff */ | |
f254e52c | 662 | |
1e1d2701 CM |
663 | /* |
664 | * root items point to tree roots. There are typically in the root | |
665 | * tree used by the super block to find all the other trees | |
666 | */ | |
9078a3e1 | 667 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
668 | /* |
669 | * extent items are in the extent map tree. These record which blocks | |
670 | * are used, and how many references there are to each block | |
671 | */ | |
9078a3e1 | 672 | #define BTRFS_EXTENT_ITEM_KEY 33 |
74493f7a | 673 | #define BTRFS_EXTENT_REF_KEY 34 |
9078a3e1 CM |
674 | |
675 | /* | |
676 | * block groups give us hints into the extent allocation trees. Which | |
677 | * blocks are free etc etc | |
678 | */ | |
74493f7a | 679 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 50 |
9f5fae2f | 680 | |
0b86a832 CM |
681 | #define BTRFS_DEV_EXTENT_KEY 75 |
682 | #define BTRFS_DEV_ITEM_KEY 76 | |
683 | #define BTRFS_CHUNK_ITEM_KEY 77 | |
684 | ||
1e1d2701 CM |
685 | /* |
686 | * string items are for debugging. They just store a short string of | |
687 | * data in the FS | |
688 | */ | |
9078a3e1 CM |
689 | #define BTRFS_STRING_ITEM_KEY 253 |
690 | ||
21ad10cf CM |
691 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
692 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
693 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 694 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 695 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
b6cda9bc CM |
696 | |
697 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
698 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
699 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
700 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
701 | /* |
702 | * Inode flags | |
703 | */ | |
fdebe2bd Y |
704 | #define BTRFS_INODE_NODATASUM (1 << 0) |
705 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
706 | #define BTRFS_INODE_READONLY (1 << 2) | |
b98b6767 Y |
707 | #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \ |
708 | ~BTRFS_INODE_##flag) | |
709 | #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \ | |
710 | BTRFS_INODE_##flag) | |
711 | #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \ | |
712 | BTRFS_INODE_##flag) | |
5f39d397 CM |
713 | /* some macros to generate set/get funcs for the struct fields. This |
714 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
715 | * one for u8: | |
716 | */ | |
717 | #define le8_to_cpu(v) (v) | |
718 | #define cpu_to_le8(v) (v) | |
719 | #define __le8 u8 | |
720 | ||
721 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
722 | read_extent_buffer(eb, (char *)(result), \ | |
723 | ((unsigned long)(ptr)) + \ | |
724 | offsetof(type, member), \ | |
725 | sizeof(((type *)0)->member))) | |
726 | ||
727 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
728 | write_extent_buffer(eb, (char *)(result), \ | |
729 | ((unsigned long)(ptr)) + \ | |
730 | offsetof(type, member), \ | |
731 | sizeof(((type *)0)->member))) | |
732 | ||
0f82731f | 733 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 734 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
735 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
736 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
737 | #endif | |
5f39d397 CM |
738 | |
739 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
740 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
741 | { \ | |
df68b8a7 DM |
742 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
743 | u##bits res = le##bits##_to_cpu(p->member); \ | |
744 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 745 | return res; \ |
5f39d397 CM |
746 | } \ |
747 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
748 | u##bits val) \ | |
749 | { \ | |
df68b8a7 DM |
750 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
751 | p->member = cpu_to_le##bits(val); \ | |
752 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 753 | } |
9078a3e1 | 754 | |
5f39d397 CM |
755 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
756 | static inline u##bits btrfs_##name(type *s) \ | |
757 | { \ | |
758 | return le##bits##_to_cpu(s->member); \ | |
759 | } \ | |
760 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
761 | { \ | |
762 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
763 | } |
764 | ||
0b86a832 CM |
765 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
766 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
767 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
768 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
769 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
770 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); | |
771 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
772 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
773 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
774 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
0b86a832 | 775 | |
8a4b83cc CM |
776 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
777 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
778 | total_bytes, 64); | |
779 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
780 | bytes_used, 64); | |
781 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
782 | io_align, 32); | |
783 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
784 | io_width, 32); | |
785 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
786 | sector_size, 32); | |
787 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
788 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
789 | dev_group, 32); | |
790 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
791 | seek_speed, 8); | |
792 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
793 | bandwidth, 8); | |
8a4b83cc | 794 | |
0b86a832 CM |
795 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
796 | { | |
797 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
798 | } | |
799 | ||
e17cade2 | 800 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
801 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
802 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
803 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
804 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
805 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
806 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
807 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 808 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
809 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
810 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
811 | ||
e17cade2 CM |
812 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
813 | { | |
814 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
815 | } | |
816 | ||
817 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
818 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
819 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
820 | stripe_len, 64); | |
821 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
822 | io_align, 32); | |
823 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
824 | io_width, 32); | |
825 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
826 | sector_size, 32); | |
827 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
828 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
829 | num_stripes, 16); | |
321aecc6 CM |
830 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
831 | sub_stripes, 16); | |
0b86a832 CM |
832 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
833 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
834 | ||
835 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
836 | int nr) | |
837 | { | |
838 | unsigned long offset = (unsigned long)c; | |
839 | offset += offsetof(struct btrfs_chunk, stripe); | |
840 | offset += nr * sizeof(struct btrfs_stripe); | |
841 | return (struct btrfs_stripe *)offset; | |
842 | } | |
843 | ||
a443755f CM |
844 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
845 | { | |
846 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
847 | } | |
848 | ||
0b86a832 CM |
849 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
850 | struct btrfs_chunk *c, int nr) | |
851 | { | |
852 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
853 | } | |
854 | ||
855 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
856 | struct btrfs_chunk *c, int nr, | |
857 | u64 val) | |
858 | { | |
859 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
860 | } | |
861 | ||
862 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
863 | struct btrfs_chunk *c, int nr) | |
864 | { | |
865 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
866 | } | |
867 | ||
868 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
869 | struct btrfs_chunk *c, int nr, | |
870 | u64 val) | |
871 | { | |
872 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
873 | } | |
874 | ||
5f39d397 CM |
875 | /* struct btrfs_block_group_item */ |
876 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
877 | used, 64); | |
878 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
879 | used, 64); | |
0b86a832 CM |
880 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
881 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
882 | |
883 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
884 | struct btrfs_block_group_item, chunk_objectid, 64); |
885 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
886 | struct btrfs_block_group_item, flags, 64); | |
887 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
888 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 889 | |
3954401f CM |
890 | /* struct btrfs_inode_ref */ |
891 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
892 | ||
5f39d397 CM |
893 | /* struct btrfs_inode_item */ |
894 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
895 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); | |
896 | BTRFS_SETGET_FUNCS(inode_nblocks, struct btrfs_inode_item, nblocks, 64); | |
897 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); | |
898 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
899 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
900 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
901 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 902 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
5f39d397 CM |
903 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 16); |
904 | BTRFS_SETGET_FUNCS(inode_compat_flags, struct btrfs_inode_item, | |
905 | compat_flags, 16); | |
1e1d2701 | 906 | |
0b86a832 | 907 | static inline struct btrfs_timespec * |
5f39d397 | 908 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 909 | { |
5f39d397 CM |
910 | unsigned long ptr = (unsigned long)inode_item; |
911 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 912 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
913 | } |
914 | ||
0b86a832 | 915 | static inline struct btrfs_timespec * |
5f39d397 | 916 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 917 | { |
5f39d397 CM |
918 | unsigned long ptr = (unsigned long)inode_item; |
919 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 920 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
921 | } |
922 | ||
0b86a832 | 923 | static inline struct btrfs_timespec * |
5f39d397 | 924 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 925 | { |
5f39d397 CM |
926 | unsigned long ptr = (unsigned long)inode_item; |
927 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 928 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
929 | } |
930 | ||
0b86a832 | 931 | static inline struct btrfs_timespec * |
5f39d397 | 932 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 933 | { |
5f39d397 CM |
934 | unsigned long ptr = (unsigned long)inode_item; |
935 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 936 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
937 | } |
938 | ||
0b86a832 CM |
939 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
940 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 941 | |
5f39d397 CM |
942 | /* struct btrfs_extent_item */ |
943 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
74493f7a | 944 | |
0b86a832 | 945 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
946 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
947 | chunk_tree, 64); | |
948 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
949 | chunk_objectid, 64); | |
950 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
951 | chunk_offset, 64); | |
0b86a832 CM |
952 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
953 | ||
e17cade2 CM |
954 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
955 | { | |
956 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
957 | return (u8 *)((unsigned long)dev + ptr); | |
958 | } | |
959 | ||
74493f7a CM |
960 | /* struct btrfs_extent_ref */ |
961 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
962 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
963 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
964 | BTRFS_SETGET_FUNCS(ref_offset, struct btrfs_extent_ref, offset, 64); | |
965 | ||
7bb86316 CM |
966 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
967 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 968 | generation, 64); |
7bb86316 CM |
969 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
970 | objectid, 64); | |
971 | BTRFS_SETGET_STACK_FUNCS(stack_ref_offset, struct btrfs_extent_ref, offset, 64); | |
e20d96d6 | 972 | |
5f39d397 CM |
973 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
974 | refs, 32); | |
e20d96d6 | 975 | |
5f39d397 CM |
976 | /* struct btrfs_node */ |
977 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 978 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 979 | |
5f39d397 | 980 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 981 | { |
5f39d397 CM |
982 | unsigned long ptr; |
983 | ptr = offsetof(struct btrfs_node, ptrs) + | |
984 | sizeof(struct btrfs_key_ptr) * nr; | |
985 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
986 | } |
987 | ||
5f39d397 CM |
988 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
989 | int nr, u64 val) | |
cf27e1ee | 990 | { |
5f39d397 CM |
991 | unsigned long ptr; |
992 | ptr = offsetof(struct btrfs_node, ptrs) + | |
993 | sizeof(struct btrfs_key_ptr) * nr; | |
994 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
995 | } |
996 | ||
74493f7a CM |
997 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
998 | { | |
999 | unsigned long ptr; | |
1000 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1001 | sizeof(struct btrfs_key_ptr) * nr; | |
1002 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1003 | } | |
1004 | ||
1005 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1006 | int nr, u64 val) | |
1007 | { | |
1008 | unsigned long ptr; | |
1009 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1010 | sizeof(struct btrfs_key_ptr) * nr; | |
1011 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1012 | } | |
1013 | ||
810191ff | 1014 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1015 | { |
5f39d397 CM |
1016 | return offsetof(struct btrfs_node, ptrs) + |
1017 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1018 | } |
1019 | ||
e644d021 CM |
1020 | void btrfs_node_key(struct extent_buffer *eb, |
1021 | struct btrfs_disk_key *disk_key, int nr); | |
1022 | ||
5f39d397 CM |
1023 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1024 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1025 | { |
5f39d397 CM |
1026 | unsigned long ptr; |
1027 | ptr = btrfs_node_key_ptr_offset(nr); | |
1028 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1029 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1030 | } |
1031 | ||
5f39d397 CM |
1032 | /* struct btrfs_item */ |
1033 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1034 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1035 | |
5f39d397 | 1036 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1037 | { |
5f39d397 CM |
1038 | return offsetof(struct btrfs_leaf, items) + |
1039 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1040 | } |
1041 | ||
5f39d397 CM |
1042 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1043 | int nr) | |
0783fcfc | 1044 | { |
5f39d397 | 1045 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1046 | } |
1047 | ||
5f39d397 CM |
1048 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1049 | struct btrfs_item *item) | |
0783fcfc | 1050 | { |
5f39d397 | 1051 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1052 | } |
1053 | ||
5f39d397 | 1054 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1055 | { |
5f39d397 | 1056 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1057 | } |
1058 | ||
5f39d397 | 1059 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1060 | { |
5f39d397 | 1061 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1062 | } |
1063 | ||
5f39d397 | 1064 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1065 | { |
5f39d397 | 1066 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1067 | } |
1068 | ||
5f39d397 CM |
1069 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1070 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1071 | { |
5f39d397 CM |
1072 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1073 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1074 | } |
1075 | ||
5f39d397 CM |
1076 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1077 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1078 | { |
5f39d397 CM |
1079 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1080 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1081 | } |
1082 | ||
5f39d397 | 1083 | /* struct btrfs_dir_item */ |
5103e947 | 1084 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1085 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1086 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
1d4f6404 | 1087 | |
5f39d397 CM |
1088 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1089 | struct btrfs_dir_item *item, | |
1090 | struct btrfs_disk_key *key) | |
1d4f6404 | 1091 | { |
5f39d397 | 1092 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1093 | } |
1094 | ||
5f39d397 CM |
1095 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1096 | struct btrfs_dir_item *item, | |
1097 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1098 | { |
5f39d397 | 1099 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1100 | } |
1101 | ||
5f39d397 CM |
1102 | /* struct btrfs_disk_key */ |
1103 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1104 | objectid, 64); | |
1105 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1106 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1107 | |
e2fa7227 CM |
1108 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1109 | struct btrfs_disk_key *disk) | |
1110 | { | |
1111 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1112 | cpu->type = disk->type; |
e2fa7227 CM |
1113 | cpu->objectid = le64_to_cpu(disk->objectid); |
1114 | } | |
1115 | ||
1116 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1117 | struct btrfs_key *cpu) | |
1118 | { | |
1119 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1120 | disk->type = cpu->type; |
e2fa7227 CM |
1121 | disk->objectid = cpu_to_le64(cpu->objectid); |
1122 | } | |
1123 | ||
5f39d397 CM |
1124 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1125 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1126 | { |
5f39d397 CM |
1127 | struct btrfs_disk_key disk_key; |
1128 | btrfs_node_key(eb, &disk_key, nr); | |
1129 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1130 | } |
1131 | ||
5f39d397 CM |
1132 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1133 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1134 | { |
5f39d397 CM |
1135 | struct btrfs_disk_key disk_key; |
1136 | btrfs_item_key(eb, &disk_key, nr); | |
1137 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1138 | } |
1139 | ||
5f39d397 CM |
1140 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1141 | struct btrfs_dir_item *item, | |
1142 | struct btrfs_key *key) | |
4d775673 | 1143 | { |
5f39d397 CM |
1144 | struct btrfs_disk_key disk_key; |
1145 | btrfs_dir_item_key(eb, item, &disk_key); | |
1146 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1147 | } |
1148 | ||
58176a96 | 1149 | |
5f39d397 | 1150 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1151 | { |
5f39d397 | 1152 | return key->type; |
3768f368 CM |
1153 | } |
1154 | ||
5f39d397 | 1155 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1156 | { |
5f39d397 | 1157 | key->type = val; |
3768f368 CM |
1158 | } |
1159 | ||
5f39d397 | 1160 | /* struct btrfs_header */ |
db94535d | 1161 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1162 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1163 | generation, 64); | |
1164 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1165 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1166 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1167 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1168 | |
63b10fc4 CM |
1169 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1170 | { | |
1171 | return (btrfs_header_flags(eb) & flag) == flag; | |
1172 | } | |
1173 | ||
1174 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1175 | { | |
1176 | u64 flags = btrfs_header_flags(eb); | |
1177 | btrfs_set_header_flags(eb, flags | flag); | |
1178 | return (flags & flag) == flag; | |
1179 | } | |
1180 | ||
1181 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1182 | { | |
1183 | u64 flags = btrfs_header_flags(eb); | |
1184 | btrfs_set_header_flags(eb, flags & ~flag); | |
1185 | return (flags & flag) == flag; | |
1186 | } | |
1187 | ||
5f39d397 | 1188 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1189 | { |
5f39d397 CM |
1190 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1191 | return (u8 *)ptr; | |
0f7d52f4 CM |
1192 | } |
1193 | ||
e17cade2 CM |
1194 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1195 | { | |
1196 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1197 | return (u8 *)ptr; | |
1198 | } | |
1199 | ||
5f39d397 | 1200 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1201 | { |
5f39d397 CM |
1202 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1203 | return (u8 *)ptr; | |
3768f368 CM |
1204 | } |
1205 | ||
5f39d397 | 1206 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1207 | { |
5f39d397 CM |
1208 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1209 | return (u8 *)ptr; | |
3768f368 CM |
1210 | } |
1211 | ||
5f39d397 | 1212 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1213 | { |
5f39d397 | 1214 | return NULL; |
3768f368 CM |
1215 | } |
1216 | ||
5f39d397 | 1217 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1218 | { |
5f39d397 | 1219 | return NULL; |
3768f368 CM |
1220 | } |
1221 | ||
5f39d397 | 1222 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1223 | { |
5f39d397 | 1224 | return NULL; |
3768f368 CM |
1225 | } |
1226 | ||
5f39d397 | 1227 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1228 | { |
5f39d397 | 1229 | return (btrfs_header_level(eb) == 0); |
3768f368 CM |
1230 | } |
1231 | ||
5f39d397 CM |
1232 | /* struct btrfs_root_item */ |
1233 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); | |
db94535d CM |
1234 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1235 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1236 | |
db94535d CM |
1237 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1238 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1239 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1240 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
1241 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 32); | |
db94535d CM |
1242 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1243 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
123abc88 | 1244 | |
5f39d397 | 1245 | /* struct btrfs_super_block */ |
db94535d | 1246 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1247 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1248 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1249 | generation, 64); | |
1250 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1251 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1252 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
db94535d CM |
1253 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1254 | root_level, 8); | |
0b86a832 CM |
1255 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1256 | chunk_root, 64); | |
1257 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
1258 | chunk_root_level, 64); | |
db94535d CM |
1259 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1260 | total_bytes, 64); | |
1261 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1262 | bytes_used, 64); | |
5f39d397 CM |
1263 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1264 | sectorsize, 32); | |
1265 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1266 | nodesize, 32); | |
1267 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1268 | leafsize, 32); | |
87ee04eb CM |
1269 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1270 | stripesize, 32); | |
5f39d397 CM |
1271 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1272 | root_dir_objectid, 64); | |
8a4b83cc CM |
1273 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1274 | num_devices, 64); | |
2e635a27 | 1275 | |
5f39d397 | 1276 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1277 | { |
5f39d397 | 1278 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1279 | } |
1280 | ||
5f39d397 CM |
1281 | /* struct btrfs_file_extent_item */ |
1282 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1283 | |
5f39d397 | 1284 | static inline unsigned long btrfs_file_extent_inline_start(struct |
236454df CM |
1285 | btrfs_file_extent_item *e) |
1286 | { | |
5f39d397 | 1287 | unsigned long offset = (unsigned long)e; |
db94535d | 1288 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1289 | return offset; |
236454df CM |
1290 | } |
1291 | ||
1292 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1293 | { | |
db94535d | 1294 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
1295 | } |
1296 | ||
5f39d397 CM |
1297 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, |
1298 | struct btrfs_item *e) | |
9f5fae2f | 1299 | { |
5f39d397 | 1300 | unsigned long offset; |
db94535d | 1301 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1302 | return btrfs_item_size(eb, e) - offset; |
9f5fae2f CM |
1303 | } |
1304 | ||
db94535d CM |
1305 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
1306 | disk_bytenr, 64); | |
5f39d397 CM |
1307 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
1308 | generation, 64); | |
db94535d CM |
1309 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
1310 | disk_num_bytes, 64); | |
5f39d397 CM |
1311 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
1312 | offset, 64); | |
db94535d CM |
1313 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
1314 | num_bytes, 64); | |
9f5fae2f | 1315 | |
e20d96d6 CM |
1316 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1317 | { | |
1318 | return sb->s_fs_info; | |
1319 | } | |
1320 | ||
58176a96 JB |
1321 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1322 | const char *name, int len) | |
1323 | { | |
1324 | /* if we already have a name just free it */ | |
1325 | if (root->name) | |
1326 | kfree(root->name); | |
1327 | ||
1328 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1329 | if (!root->name) | |
1330 | return -ENOMEM; | |
1331 | ||
1332 | memcpy(root->name, name, len); | |
1333 | root->name[len] ='\0'; | |
1334 | ||
1335 | return 0; | |
1336 | } | |
1337 | ||
db94535d CM |
1338 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) { |
1339 | if (level == 0) | |
1340 | return root->leafsize; | |
1341 | return root->nodesize; | |
1342 | } | |
1343 | ||
4beb1b8b CM |
1344 | /* helper function to cast into the data area of the leaf. */ |
1345 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 1346 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
1347 | btrfs_item_offset_nr(leaf, slot))) |
1348 | ||
1349 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1350 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1351 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 1352 | |
6da6abae CM |
1353 | static inline struct dentry *fdentry(struct file *file) { |
1354 | #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18) | |
1355 | return file->f_dentry; | |
1356 | #else | |
1357 | return file->f_path.dentry; | |
1358 | #endif | |
1359 | } | |
1360 | ||
b18c6685 | 1361 | /* extent-tree.c */ |
be20aa9d CM |
1362 | u32 btrfs_count_snapshots_in_path(struct btrfs_root *root, |
1363 | struct btrfs_path *count_path, | |
a68d5933 | 1364 | u64 expected_owner, u64 first_extent); |
e9d0b13b CM |
1365 | int btrfs_extent_post_op(struct btrfs_trans_handle *trans, |
1366 | struct btrfs_root *root); | |
d1310b2e | 1367 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
5276aeda CM |
1368 | struct btrfs_block_group_cache *btrfs_lookup_block_group(struct |
1369 | btrfs_fs_info *info, | |
db94535d | 1370 | u64 bytenr); |
31f3c99b CM |
1371 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1372 | struct btrfs_block_group_cache | |
be744175 | 1373 | *hint, u64 search_start, |
de428b63 | 1374 | int data, int owner); |
5f39d397 | 1375 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
7bb86316 CM |
1376 | struct btrfs_root *root, |
1377 | u32 blocksize, | |
1378 | u64 root_objectid, | |
1379 | u64 ref_generation, | |
1380 | u64 first_objectid, | |
1381 | int level, | |
1382 | u64 hint, | |
1383 | u64 empty_size); | |
edbd8d4e | 1384 | int btrfs_shrink_extent_tree(struct btrfs_root *root, u64 new_size); |
7bb86316 CM |
1385 | int btrfs_insert_extent_backref(struct btrfs_trans_handle *trans, |
1386 | struct btrfs_root *root, | |
1387 | struct btrfs_path *path, u64 bytenr, | |
1388 | u64 root_objectid, u64 ref_generation, | |
1389 | u64 owner, u64 owner_offset); | |
4d775673 | 1390 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 | 1391 | struct btrfs_root *root, |
98d20f67 CM |
1392 | u64 num_bytes, u64 min_bytes, |
1393 | u64 root_objectid, u64 ref_generation, | |
7bb86316 CM |
1394 | u64 owner, u64 owner_offset, |
1395 | u64 empty_size, u64 hint_byte, | |
ec44a35c | 1396 | u64 search_end, struct btrfs_key *ins, u64 data); |
e6dcd2dc CM |
1397 | int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans, |
1398 | struct btrfs_root *root, | |
1399 | u64 root_objectid, u64 ref_generation, | |
1400 | u64 owner, u64 owner_offset, | |
1401 | struct btrfs_key *ins); | |
1402 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, | |
1403 | struct btrfs_root *root, | |
1404 | u64 num_bytes, u64 min_alloc_size, | |
1405 | u64 empty_size, u64 hint_byte, | |
1406 | u64 search_end, struct btrfs_key *ins, | |
1407 | u64 data); | |
e089f05c | 1408 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
5f39d397 | 1409 | struct extent_buffer *buf); |
e089f05c | 1410 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
7bb86316 CM |
1411 | *root, u64 bytenr, u64 num_bytes, |
1412 | u64 root_objectid, u64 ref_generation, | |
1413 | u64 owner_objectid, u64 owner_offset, int pin); | |
ccd467d6 CM |
1414 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1415 | struct btrfs_root *root, | |
d1310b2e | 1416 | struct extent_io_tree *unpin); |
b18c6685 CM |
1417 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1418 | struct btrfs_root *root, | |
7bb86316 CM |
1419 | u64 bytenr, u64 num_bytes, |
1420 | u64 root_objectid, u64 ref_generation, | |
1421 | u64 owner, u64 owner_offset); | |
9078a3e1 CM |
1422 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1423 | struct btrfs_root *root); | |
1424 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1425 | int btrfs_read_block_groups(struct btrfs_root *root); | |
0b86a832 CM |
1426 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
1427 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 1428 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 1429 | u64 size); |
dee26a9f | 1430 | /* ctree.c */ |
0b86a832 CM |
1431 | int btrfs_previous_item(struct btrfs_root *root, |
1432 | struct btrfs_path *path, u64 min_objectid, | |
1433 | int type); | |
925baedd CM |
1434 | |
1435 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); | |
1436 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 1437 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
1438 | struct btrfs_key *key, int lowest_level, |
1439 | int cache_only, u64 min_trans); | |
1440 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
1441 | struct btrfs_path *path, int cache_only, | |
1442 | u64 min_trans); | |
925baedd | 1443 | |
5f39d397 CM |
1444 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
1445 | struct btrfs_root *root, struct extent_buffer *buf, | |
1446 | struct extent_buffer *parent, int parent_slot, | |
1447 | struct extent_buffer **cow_ret); | |
be20aa9d CM |
1448 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
1449 | struct btrfs_root *root, | |
1450 | struct extent_buffer *buf, | |
1451 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
6567e837 CM |
1452 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1453 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1454 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1455 | struct btrfs_root *root, | |
1456 | struct btrfs_path *path, | |
179e29e4 | 1457 | u32 new_size, int from_end); |
e089f05c CM |
1458 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1459 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1460 | ins_len, int cow); | |
6702ed49 | 1461 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 1462 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
1463 | int start_slot, int cache_only, u64 *last_ret, |
1464 | struct btrfs_key *progress); | |
234b63a0 | 1465 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1466 | struct btrfs_path *btrfs_alloc_path(void); |
1467 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1468 | void btrfs_init_path(struct btrfs_path *p); |
85e21bac CM |
1469 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1470 | struct btrfs_path *path, int slot, int nr); | |
1471 | ||
1472 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, | |
1473 | struct btrfs_root *root, | |
1474 | struct btrfs_path *path) | |
1475 | { | |
1476 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
1477 | } | |
1478 | ||
e089f05c CM |
1479 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1480 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
1481 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
1482 | struct btrfs_root *root, | |
1483 | struct btrfs_path *path, | |
1484 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
1485 | ||
1486 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
1487 | struct btrfs_root *root, | |
1488 | struct btrfs_path *path, | |
1489 | struct btrfs_key *key, | |
1490 | u32 data_size) | |
1491 | { | |
1492 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
1493 | } | |
1494 | ||
234b63a0 | 1495 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 1496 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 1497 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 1498 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1499 | *root); |
dee26a9f | 1500 | /* root-item.c */ |
e089f05c CM |
1501 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1502 | struct btrfs_key *key); | |
1503 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1504 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1505 | *item); | |
1506 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1507 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1508 | *item); | |
1509 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1510 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
1511 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
1512 | u64 *found_objectid); | |
5ce14bbc CM |
1513 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
1514 | struct btrfs_root *latest_root); | |
dee26a9f | 1515 | /* dir-item.c */ |
e089f05c | 1516 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1517 | *root, const char *name, int name_len, u64 dir, |
1518 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1519 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1520 | struct btrfs_root *root, | |
1521 | struct btrfs_path *path, u64 dir, | |
1522 | const char *name, int name_len, | |
1523 | int mod); | |
1524 | struct btrfs_dir_item * | |
1525 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1526 | struct btrfs_root *root, | |
1527 | struct btrfs_path *path, u64 dir, | |
1528 | u64 objectid, const char *name, int name_len, | |
1529 | int mod); | |
1530 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1531 | struct btrfs_path *path, | |
7f5c1516 | 1532 | const char *name, int name_len); |
7e38180e CM |
1533 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1534 | struct btrfs_root *root, | |
1535 | struct btrfs_path *path, | |
1536 | struct btrfs_dir_item *di); | |
5103e947 JB |
1537 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
1538 | struct btrfs_root *root, const char *name, | |
1539 | u16 name_len, const void *data, u16 data_len, | |
1540 | u64 dir); | |
1541 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
1542 | struct btrfs_root *root, | |
1543 | struct btrfs_path *path, u64 dir, | |
1544 | const char *name, u16 name_len, | |
1545 | int mod); | |
dee26a9f | 1546 | /* inode-map.c */ |
9f5fae2f CM |
1547 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1548 | struct btrfs_root *fs_root, | |
1549 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1550 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1551 | ||
dee26a9f | 1552 | /* inode-item.c */ |
3954401f CM |
1553 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
1554 | struct btrfs_root *root, | |
1555 | const char *name, int name_len, | |
1556 | u64 inode_objectid, u64 ref_objectid); | |
1557 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, | |
1558 | struct btrfs_root *root, | |
1559 | const char *name, int name_len, | |
1560 | u64 inode_objectid, u64 ref_objectid); | |
5f39d397 CM |
1561 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
1562 | struct btrfs_root *root, | |
1563 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 1564 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1565 | *root, struct btrfs_path *path, |
1566 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1567 | |
1568 | /* file-item.c */ | |
b18c6685 | 1569 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1570 | struct btrfs_root *root, |
f2eb0a24 | 1571 | u64 objectid, u64 pos, u64 disk_offset, |
db94535d | 1572 | u64 disk_num_bytes, |
f2eb0a24 | 1573 | u64 num_bytes, u64 offset); |
dee26a9f CM |
1574 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1575 | struct btrfs_root *root, | |
1576 | struct btrfs_path *path, u64 objectid, | |
db94535d | 1577 | u64 bytenr, int mod); |
065631f6 CM |
1578 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
1579 | struct btrfs_root *root, struct inode *inode, | |
e6dcd2dc | 1580 | struct btrfs_ordered_sum *sums); |
e015640f | 1581 | int btrfs_csum_one_bio(struct btrfs_root *root, |
e6dcd2dc | 1582 | struct bio *bio, struct btrfs_ordered_sum **sums_ret); |
b18c6685 CM |
1583 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1584 | struct btrfs_root *root, | |
1585 | struct btrfs_path *path, | |
1586 | u64 objectid, u64 offset, | |
1587 | int cow); | |
1de037a4 CM |
1588 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1589 | struct btrfs_root *root, struct btrfs_path *path, | |
1590 | u64 isize); | |
39279cc3 | 1591 | /* inode.c */ |
f46b5a66 CH |
1592 | int btrfs_create_subvol_root(struct btrfs_root *new_root, |
1593 | struct btrfs_trans_handle *trans, u64 new_dirid, | |
1594 | struct btrfs_block_group_cache *block_group); | |
1595 | ||
3b96362c SW |
1596 | void btrfs_invalidate_dcache_root(struct btrfs_root *root, char *name, |
1597 | int namelen); | |
1598 | ||
239b14b3 CM |
1599 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
1600 | size_t size, struct bio *bio); | |
1601 | ||
9069218d CM |
1602 | static inline void dec_i_blocks(struct inode *inode, u64 dec) |
1603 | { | |
1604 | dec = dec >> 9; | |
1605 | if (dec <= inode->i_blocks) | |
1606 | inode->i_blocks -= dec; | |
1607 | else | |
1608 | inode->i_blocks = 0; | |
1609 | } | |
1610 | ||
edbd8d4e CM |
1611 | unsigned long btrfs_force_ra(struct address_space *mapping, |
1612 | struct file_ra_state *ra, struct file *file, | |
1613 | pgoff_t offset, pgoff_t last_index); | |
1832a6d5 CM |
1614 | int btrfs_check_free_space(struct btrfs_root *root, u64 num_required, |
1615 | int for_del); | |
9ebefb18 CM |
1616 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
1617 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 | 1618 | void btrfs_delete_inode(struct inode *inode); |
2da98f00 | 1619 | void btrfs_put_inode(struct inode *inode); |
39279cc3 CM |
1620 | void btrfs_read_locked_inode(struct inode *inode); |
1621 | int btrfs_write_inode(struct inode *inode, int wait); | |
1622 | void btrfs_dirty_inode(struct inode *inode); | |
1623 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
1624 | void btrfs_destroy_inode(struct inode *inode); | |
1625 | int btrfs_init_cachep(void); | |
1626 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 1627 | long btrfs_ioctl_trans_end(struct file *file); |
39279cc3 CM |
1628 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
1629 | struct btrfs_root *root); | |
dc17ff8f CM |
1630 | struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, |
1631 | u64 root_objectid); | |
39279cc3 CM |
1632 | int btrfs_commit_write(struct file *file, struct page *page, |
1633 | unsigned from, unsigned to); | |
a52d9a80 CM |
1634 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
1635 | size_t page_offset, u64 start, u64 end, | |
1636 | int create); | |
1637 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
1638 | struct btrfs_root *root, | |
1639 | struct inode *inode); | |
f46b5a66 CH |
1640 | |
1641 | /* ioctl.c */ | |
1642 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
1643 | ||
39279cc3 | 1644 | /* file.c */ |
a52d9a80 | 1645 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end); |
5f56406a | 1646 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
39279cc3 CM |
1647 | extern struct file_operations btrfs_file_operations; |
1648 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
1649 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 1650 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
6bf13c0c SW |
1651 | int btrfs_release_file(struct inode *inode, struct file *file); |
1652 | ||
6702ed49 CM |
1653 | /* tree-defrag.c */ |
1654 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
1655 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
1656 | |
1657 | /* sysfs.c */ | |
1658 | int btrfs_init_sysfs(void); | |
1659 | void btrfs_exit_sysfs(void); | |
1660 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
1661 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
1662 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
1663 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
1664 | ||
5103e947 JB |
1665 | /* xattr.c */ |
1666 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
1667 | int btrfs_delete_xattrs(struct btrfs_trans_handle *trans, | |
1668 | struct btrfs_root *root, struct inode *inode); | |
edbd8d4e CM |
1669 | /* super.c */ |
1670 | u64 btrfs_parse_size(char *str); | |
edf24abe | 1671 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 1672 | int btrfs_sync_fs(struct super_block *sb, int wait); |
eb60ceac | 1673 | #endif |