Commit | Line | Data |
---|---|---|
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 | ||
234b63a0 CM |
19 | #ifndef __BTRFS__ |
20 | #define __BTRFS__ | |
eb60ceac | 21 | |
e20d96d6 | 22 | #include <linux/fs.h> |
d6025579 | 23 | #include <linux/buffer_head.h> |
08607c1b | 24 | #include <linux/workqueue.h> |
8ef97622 | 25 | #include "bit-radix.h" |
e20d96d6 | 26 | |
e089f05c | 27 | struct btrfs_trans_handle; |
79154b1b | 28 | struct btrfs_transaction; |
35b7e476 CM |
29 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
30 | extern struct kmem_cache *btrfs_transaction_cachep; | |
31 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 32 | extern struct kmem_cache *btrfs_path_cachep; |
e089f05c | 33 | |
3768f368 | 34 | #define BTRFS_MAGIC "_BtRfS_M" |
eb60ceac | 35 | |
6407bf6d | 36 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0cf6c620 CM |
37 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
38 | #define BTRFS_FS_TREE_OBJECTID 3ULL | |
39 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 4ULL | |
40 | #define BTRFS_FIRST_FREE_OBJECTID 5ULL | |
3768f368 | 41 | |
e20d96d6 CM |
42 | /* |
43 | * we can actually store much bigger names, but lets not confuse the rest | |
44 | * of linux | |
45 | */ | |
46 | #define BTRFS_NAME_LEN 255 | |
47 | ||
f254e52c CM |
48 | /* 32 bytes in various csum fields */ |
49 | #define BTRFS_CSUM_SIZE 32 | |
509659cd CM |
50 | /* four bytes for CRC32 */ |
51 | #define BTRFS_CRC32_SIZE 4 | |
e06afa83 | 52 | #define BTRFS_EMPTY_DIR_SIZE 6 |
f254e52c | 53 | |
fabb5681 CM |
54 | #define BTRFS_FT_UNKNOWN 0 |
55 | #define BTRFS_FT_REG_FILE 1 | |
56 | #define BTRFS_FT_DIR 2 | |
57 | #define BTRFS_FT_CHRDEV 3 | |
58 | #define BTRFS_FT_BLKDEV 4 | |
59 | #define BTRFS_FT_FIFO 5 | |
60 | #define BTRFS_FT_SOCK 6 | |
61 | #define BTRFS_FT_SYMLINK 7 | |
62 | #define BTRFS_FT_MAX 8 | |
63 | ||
fec577fb CM |
64 | /* |
65 | * the key defines the order in the tree, and so it also defines (optimal) | |
66 | * block layout. objectid corresonds to the inode number. The flags | |
67 | * tells us things about the object, and is a kind of stream selector. | |
68 | * so for a given inode, keys with flags of 1 might refer to the inode | |
69 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
70 | * may point to extents. | |
71 | * | |
72 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
73 | * |
74 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
75 | * in cpu native order. Otherwise they are identical and their sizes | |
76 | * should be the same (ie both packed) | |
fec577fb | 77 | */ |
e2fa7227 CM |
78 | struct btrfs_disk_key { |
79 | __le64 objectid; | |
f254e52c | 80 | __le32 flags; |
70b2befd | 81 | __le64 offset; |
e2fa7227 CM |
82 | } __attribute__ ((__packed__)); |
83 | ||
84 | struct btrfs_key { | |
eb60ceac | 85 | u64 objectid; |
f254e52c | 86 | u32 flags; |
70b2befd | 87 | u64 offset; |
eb60ceac CM |
88 | } __attribute__ ((__packed__)); |
89 | ||
fec577fb CM |
90 | /* |
91 | * every tree block (leaf or node) starts with this header. | |
92 | */ | |
bb492bb0 | 93 | struct btrfs_header { |
f254e52c | 94 | u8 csum[BTRFS_CSUM_SIZE]; |
3768f368 | 95 | u8 fsid[16]; /* FS specific uuid */ |
bb492bb0 | 96 | __le64 blocknr; /* which block this node is supposed to live in */ |
7f5c1516 | 97 | __le64 generation; |
4d775673 | 98 | __le64 owner; |
bb492bb0 CM |
99 | __le16 nritems; |
100 | __le16 flags; | |
9a6f11ed | 101 | u8 level; |
eb60ceac CM |
102 | } __attribute__ ((__packed__)); |
103 | ||
234b63a0 | 104 | #define BTRFS_MAX_LEVEL 8 |
123abc88 CM |
105 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \ |
106 | sizeof(struct btrfs_header)) / \ | |
107 | (sizeof(struct btrfs_disk_key) + sizeof(u64))) | |
108 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) | |
109 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize)) | |
236454df CM |
110 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
111 | sizeof(struct btrfs_item) - \ | |
112 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 113 | |
e20d96d6 | 114 | struct buffer_head; |
fec577fb CM |
115 | /* |
116 | * the super block basically lists the main trees of the FS | |
117 | * it currently lacks any block count etc etc | |
118 | */ | |
234b63a0 | 119 | struct btrfs_super_block { |
f254e52c | 120 | u8 csum[BTRFS_CSUM_SIZE]; |
87cbda5c | 121 | /* the first 3 fields must match struct btrfs_header */ |
3768f368 CM |
122 | u8 fsid[16]; /* FS specific uuid */ |
123 | __le64 blocknr; /* this block number */ | |
3768f368 | 124 | __le64 magic; |
123abc88 | 125 | __le32 blocksize; |
3768f368 CM |
126 | __le64 generation; |
127 | __le64 root; | |
128 | __le64 total_blocks; | |
129 | __le64 blocks_used; | |
2e635a27 | 130 | __le64 root_dir_objectid; |
cfaa7295 CM |
131 | } __attribute__ ((__packed__)); |
132 | ||
fec577fb | 133 | /* |
62e2749e | 134 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
135 | * the item in the leaf (relative to the start of the data area) |
136 | */ | |
0783fcfc | 137 | struct btrfs_item { |
e2fa7227 | 138 | struct btrfs_disk_key key; |
123abc88 | 139 | __le32 offset; |
0783fcfc | 140 | __le16 size; |
eb60ceac CM |
141 | } __attribute__ ((__packed__)); |
142 | ||
fec577fb CM |
143 | /* |
144 | * leaves have an item area and a data area: | |
145 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
146 | * | |
147 | * The data is separate from the items to get the keys closer together | |
148 | * during searches. | |
149 | */ | |
234b63a0 | 150 | struct btrfs_leaf { |
bb492bb0 | 151 | struct btrfs_header header; |
123abc88 | 152 | struct btrfs_item items[]; |
eb60ceac CM |
153 | } __attribute__ ((__packed__)); |
154 | ||
fec577fb CM |
155 | /* |
156 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
157 | * other blocks | |
158 | */ | |
123abc88 CM |
159 | struct btrfs_key_ptr { |
160 | struct btrfs_disk_key key; | |
161 | __le64 blockptr; | |
162 | } __attribute__ ((__packed__)); | |
163 | ||
234b63a0 | 164 | struct btrfs_node { |
bb492bb0 | 165 | struct btrfs_header header; |
123abc88 | 166 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
167 | } __attribute__ ((__packed__)); |
168 | ||
fec577fb | 169 | /* |
234b63a0 CM |
170 | * btrfs_paths remember the path taken from the root down to the leaf. |
171 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
172 | * to any other levels that are present. |
173 | * | |
174 | * The slots array records the index of the item or block pointer | |
175 | * used while walking the tree. | |
176 | */ | |
234b63a0 | 177 | struct btrfs_path { |
e20d96d6 | 178 | struct buffer_head *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 179 | int slots[BTRFS_MAX_LEVEL]; |
eb60ceac | 180 | }; |
5de08d7d | 181 | |
62e2749e CM |
182 | /* |
183 | * items in the extent btree are used to record the objectid of the | |
184 | * owner of the block and the number of references | |
185 | */ | |
186 | struct btrfs_extent_item { | |
187 | __le32 refs; | |
4d775673 | 188 | __le64 owner; |
62e2749e CM |
189 | } __attribute__ ((__packed__)); |
190 | ||
1e1d2701 | 191 | struct btrfs_inode_timespec { |
f254e52c | 192 | __le64 sec; |
1e1d2701 CM |
193 | __le32 nsec; |
194 | } __attribute__ ((__packed__)); | |
195 | ||
196 | /* | |
197 | * there is no padding here on purpose. If you want to extent the inode, | |
198 | * make a new item type | |
199 | */ | |
200 | struct btrfs_inode_item { | |
201 | __le64 generation; | |
202 | __le64 size; | |
203 | __le64 nblocks; | |
31f3c99b | 204 | __le64 block_group; |
1e1d2701 CM |
205 | __le32 nlink; |
206 | __le32 uid; | |
207 | __le32 gid; | |
208 | __le32 mode; | |
209 | __le32 rdev; | |
210 | __le16 flags; | |
211 | __le16 compat_flags; | |
212 | struct btrfs_inode_timespec atime; | |
213 | struct btrfs_inode_timespec ctime; | |
214 | struct btrfs_inode_timespec mtime; | |
215 | struct btrfs_inode_timespec otime; | |
216 | } __attribute__ ((__packed__)); | |
217 | ||
62e2749e | 218 | struct btrfs_dir_item { |
d6e4a428 | 219 | struct btrfs_disk_key location; |
62e2749e | 220 | __le16 flags; |
a8a2ee0c | 221 | __le16 name_len; |
62e2749e CM |
222 | u8 type; |
223 | } __attribute__ ((__packed__)); | |
224 | ||
225 | struct btrfs_root_item { | |
d6e4a428 CM |
226 | struct btrfs_inode_item inode; |
227 | __le64 root_dirid; | |
62e2749e CM |
228 | __le64 blocknr; |
229 | __le32 flags; | |
230 | __le64 block_limit; | |
231 | __le64 blocks_used; | |
232 | __le32 refs; | |
9f5fae2f | 233 | } __attribute__ ((__packed__)); |
62e2749e | 234 | |
236454df CM |
235 | #define BTRFS_FILE_EXTENT_REG 0 |
236 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
237 | ||
9f5fae2f | 238 | struct btrfs_file_extent_item { |
71951f35 | 239 | __le64 generation; |
236454df | 240 | u8 type; |
9f5fae2f CM |
241 | /* |
242 | * disk space consumed by the extent, checksum blocks are included | |
243 | * in these numbers | |
244 | */ | |
245 | __le64 disk_blocknr; | |
246 | __le64 disk_num_blocks; | |
247 | /* | |
dee26a9f | 248 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
249 | * this extent record is for. This allows a file extent to point |
250 | * into the middle of an existing extent on disk, sharing it | |
251 | * between two snapshots (useful if some bytes in the middle of the | |
252 | * extent have changed | |
253 | */ | |
254 | __le64 offset; | |
255 | /* | |
256 | * the logical number of file blocks (no csums included) | |
257 | */ | |
258 | __le64 num_blocks; | |
259 | } __attribute__ ((__packed__)); | |
260 | ||
f254e52c | 261 | struct btrfs_csum_item { |
509659cd | 262 | u8 csum; |
f254e52c CM |
263 | } __attribute__ ((__packed__)); |
264 | ||
9078a3e1 CM |
265 | /* tag for the radix tree of block groups in ram */ |
266 | #define BTRFS_BLOCK_GROUP_DIRTY 0 | |
31f3c99b | 267 | #define BTRFS_BLOCK_GROUP_AVAIL 1 |
9078a3e1 | 268 | #define BTRFS_BLOCK_GROUP_SIZE (256 * 1024 * 1024) |
1e2677e0 CM |
269 | |
270 | ||
271 | #define BTRFS_BLOCK_GROUP_DATA 1 | |
9078a3e1 CM |
272 | struct btrfs_block_group_item { |
273 | __le64 used; | |
1e2677e0 | 274 | u8 flags; |
9078a3e1 CM |
275 | } __attribute__ ((__packed__)); |
276 | ||
277 | struct btrfs_block_group_cache { | |
278 | struct btrfs_key key; | |
279 | struct btrfs_block_group_item item; | |
3e1ad54f | 280 | struct radix_tree_root *radix; |
cd1bc465 CM |
281 | u64 first_free; |
282 | u64 last_alloc; | |
be744175 | 283 | u64 pinned; |
e37c9e69 | 284 | u64 last_prealloc; |
be744175 | 285 | int data; |
e37c9e69 | 286 | int cached; |
9078a3e1 CM |
287 | }; |
288 | ||
87cbda5c | 289 | struct crypto_hash; |
08607c1b | 290 | |
9f5fae2f | 291 | struct btrfs_fs_info { |
facda1e7 | 292 | spinlock_t hash_lock; |
62e2749e CM |
293 | struct btrfs_root *extent_root; |
294 | struct btrfs_root *tree_root; | |
0f7d52f4 | 295 | struct radix_tree_root fs_roots_radix; |
8ef97622 | 296 | struct radix_tree_root pending_del_radix; |
62e2749e | 297 | struct radix_tree_root pinned_radix; |
9078a3e1 | 298 | struct radix_tree_root block_group_radix; |
be744175 | 299 | struct radix_tree_root block_group_data_radix; |
e37c9e69 | 300 | struct radix_tree_root extent_map_radix; |
f2458e1d CM |
301 | |
302 | u64 extent_tree_insert[BTRFS_MAX_LEVEL * 3]; | |
303 | int extent_tree_insert_nr; | |
304 | u64 extent_tree_prealloc[BTRFS_MAX_LEVEL * 3]; | |
305 | int extent_tree_prealloc_nr; | |
306 | ||
293ffd5f | 307 | u64 generation; |
79154b1b | 308 | struct btrfs_transaction *running_transaction; |
1261ec42 | 309 | struct btrfs_super_block *disk_super; |
e20d96d6 CM |
310 | struct buffer_head *sb_buffer; |
311 | struct super_block *sb; | |
d98237b3 | 312 | struct inode *btree_inode; |
79154b1b | 313 | struct mutex trans_mutex; |
d561c025 | 314 | struct mutex fs_mutex; |
8fd17795 | 315 | struct list_head trans_list; |
facda1e7 | 316 | struct list_head dead_roots; |
87cbda5c | 317 | struct crypto_hash *hash_tfm; |
08607c1b | 318 | struct delayed_work trans_work; |
e66f709b | 319 | int do_barriers; |
facda1e7 | 320 | int closing; |
9f5fae2f CM |
321 | }; |
322 | ||
323 | /* | |
324 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 325 | * and for the extent tree extent_root root. |
9f5fae2f CM |
326 | */ |
327 | struct btrfs_root { | |
e20d96d6 CM |
328 | struct buffer_head *node; |
329 | struct buffer_head *commit_root; | |
62e2749e CM |
330 | struct btrfs_root_item root_item; |
331 | struct btrfs_key root_key; | |
9f5fae2f | 332 | struct btrfs_fs_info *fs_info; |
0f7d52f4 CM |
333 | struct inode *inode; |
334 | u64 objectid; | |
335 | u64 last_trans; | |
62e2749e | 336 | u32 blocksize; |
9f5fae2f CM |
337 | int ref_cows; |
338 | u32 type; | |
1b05da2e CM |
339 | u64 highest_inode; |
340 | u64 last_inode_alloc; | |
62e2749e CM |
341 | }; |
342 | ||
62e2749e CM |
343 | /* the lower bits in the key flags defines the item type */ |
344 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
345 | #define BTRFS_KEY_TYPE_SHIFT 24 |
346 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
347 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
348 | |
349 | /* | |
350 | * inode items have the data typically returned from stat and store other | |
351 | * info about object characteristics. There is one for every file and dir in | |
352 | * the FS | |
353 | */ | |
9078a3e1 CM |
354 | #define BTRFS_INODE_ITEM_KEY 1 |
355 | ||
356 | /* reserve 2-15 close to the inode for later flexibility */ | |
1e1d2701 CM |
357 | |
358 | /* | |
359 | * dir items are the name -> inode pointers in a directory. There is one | |
360 | * for every name in a directory. | |
361 | */ | |
9078a3e1 CM |
362 | #define BTRFS_DIR_ITEM_KEY 16 |
363 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 364 | /* |
9078a3e1 | 365 | * extent data is for file data |
1e1d2701 | 366 | */ |
9078a3e1 | 367 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
368 | /* |
369 | * csum items have the checksums for data in the extents | |
370 | */ | |
9078a3e1 CM |
371 | #define BTRFS_CSUM_ITEM_KEY 19 |
372 | ||
373 | /* reserve 20-31 for other file stuff */ | |
f254e52c | 374 | |
1e1d2701 CM |
375 | /* |
376 | * root items point to tree roots. There are typically in the root | |
377 | * tree used by the super block to find all the other trees | |
378 | */ | |
9078a3e1 | 379 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
380 | /* |
381 | * extent items are in the extent map tree. These record which blocks | |
382 | * are used, and how many references there are to each block | |
383 | */ | |
9078a3e1 CM |
384 | #define BTRFS_EXTENT_ITEM_KEY 33 |
385 | ||
386 | /* | |
387 | * block groups give us hints into the extent allocation trees. Which | |
388 | * blocks are free etc etc | |
389 | */ | |
390 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 34 | |
9f5fae2f | 391 | |
1e1d2701 CM |
392 | /* |
393 | * string items are for debugging. They just store a short string of | |
394 | * data in the FS | |
395 | */ | |
9078a3e1 CM |
396 | #define BTRFS_STRING_ITEM_KEY 253 |
397 | ||
398 | ||
399 | static inline u64 btrfs_block_group_used(struct btrfs_block_group_item *bi) | |
400 | { | |
401 | return le64_to_cpu(bi->used); | |
402 | } | |
403 | ||
404 | static inline void btrfs_set_block_group_used(struct | |
405 | btrfs_block_group_item *bi, | |
406 | u64 val) | |
407 | { | |
408 | bi->used = cpu_to_le64(val); | |
409 | } | |
1e1d2701 CM |
410 | |
411 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
412 | { | |
413 | return le64_to_cpu(i->generation); | |
414 | } | |
415 | ||
416 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
417 | u64 val) | |
418 | { | |
419 | i->generation = cpu_to_le64(val); | |
420 | } | |
421 | ||
422 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
423 | { | |
424 | return le64_to_cpu(i->size); | |
425 | } | |
426 | ||
427 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
428 | { | |
429 | i->size = cpu_to_le64(val); | |
430 | } | |
431 | ||
432 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
433 | { | |
434 | return le64_to_cpu(i->nblocks); | |
435 | } | |
436 | ||
437 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
438 | { | |
439 | i->nblocks = cpu_to_le64(val); | |
440 | } | |
441 | ||
31f3c99b CM |
442 | static inline u64 btrfs_inode_block_group(struct btrfs_inode_item *i) |
443 | { | |
444 | return le64_to_cpu(i->block_group); | |
445 | } | |
446 | ||
447 | static inline void btrfs_set_inode_block_group(struct btrfs_inode_item *i, | |
448 | u64 val) | |
449 | { | |
450 | i->block_group = cpu_to_le64(val); | |
451 | } | |
452 | ||
1e1d2701 CM |
453 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) |
454 | { | |
455 | return le32_to_cpu(i->nlink); | |
456 | } | |
457 | ||
458 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
459 | { | |
460 | i->nlink = cpu_to_le32(val); | |
461 | } | |
462 | ||
463 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
464 | { | |
465 | return le32_to_cpu(i->uid); | |
466 | } | |
467 | ||
468 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
469 | { | |
470 | i->uid = cpu_to_le32(val); | |
471 | } | |
472 | ||
473 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
474 | { | |
475 | return le32_to_cpu(i->gid); | |
476 | } | |
477 | ||
478 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
479 | { | |
480 | i->gid = cpu_to_le32(val); | |
481 | } | |
482 | ||
483 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
484 | { | |
485 | return le32_to_cpu(i->mode); | |
486 | } | |
487 | ||
488 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
489 | { | |
490 | i->mode = cpu_to_le32(val); | |
491 | } | |
492 | ||
493 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
494 | { | |
495 | return le32_to_cpu(i->rdev); | |
496 | } | |
497 | ||
498 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
499 | { | |
500 | i->rdev = cpu_to_le32(val); | |
501 | } | |
502 | ||
503 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
504 | { | |
505 | return le16_to_cpu(i->flags); | |
506 | } | |
507 | ||
508 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
509 | { | |
510 | i->flags = cpu_to_le16(val); | |
511 | } | |
512 | ||
513 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
514 | { | |
515 | return le16_to_cpu(i->compat_flags); | |
516 | } | |
517 | ||
518 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
519 | u16 val) | |
520 | { | |
521 | i->compat_flags = cpu_to_le16(val); | |
522 | } | |
523 | ||
f254e52c | 524 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 525 | { |
f254e52c | 526 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
527 | } |
528 | ||
529 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 530 | u64 val) |
e20d96d6 | 531 | { |
f254e52c | 532 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
533 | } |
534 | ||
535 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
536 | { | |
537 | return le32_to_cpu(ts->nsec); | |
538 | } | |
539 | ||
540 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
541 | u32 val) | |
542 | { | |
543 | ts->nsec = cpu_to_le32(val); | |
544 | } | |
545 | ||
234b63a0 | 546 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
547 | { |
548 | return le32_to_cpu(ei->refs); | |
549 | } | |
550 | ||
234b63a0 | 551 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
552 | { |
553 | ei->refs = cpu_to_le32(val); | |
554 | } | |
555 | ||
4d775673 CM |
556 | static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei) |
557 | { | |
558 | return le64_to_cpu(ei->owner); | |
559 | } | |
560 | ||
561 | static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val) | |
562 | { | |
563 | ei->owner = cpu_to_le64(val); | |
564 | } | |
565 | ||
234b63a0 | 566 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 567 | { |
123abc88 | 568 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
569 | } |
570 | ||
4d775673 | 571 | |
234b63a0 CM |
572 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
573 | u64 val) | |
1d4f8a0c | 574 | { |
123abc88 | 575 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
576 | } |
577 | ||
123abc88 | 578 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 579 | { |
123abc88 | 580 | return le32_to_cpu(item->offset); |
0783fcfc CM |
581 | } |
582 | ||
123abc88 | 583 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 584 | { |
123abc88 | 585 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
586 | } |
587 | ||
123abc88 | 588 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 589 | { |
123abc88 | 590 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
591 | } |
592 | ||
593 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
594 | { | |
595 | return le16_to_cpu(item->size); | |
596 | } | |
597 | ||
598 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
599 | { | |
600 | item->size = cpu_to_le16(val); | |
601 | } | |
602 | ||
1d4f6404 CM |
603 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
604 | { | |
605 | return le16_to_cpu(d->flags); | |
606 | } | |
607 | ||
608 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
609 | { | |
610 | d->flags = cpu_to_le16(val); | |
611 | } | |
612 | ||
613 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
614 | { | |
615 | return d->type; | |
616 | } | |
617 | ||
618 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
619 | { | |
620 | d->type = val; | |
621 | } | |
622 | ||
a8a2ee0c CM |
623 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
624 | { | |
625 | return le16_to_cpu(d->name_len); | |
626 | } | |
627 | ||
628 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 629 | { |
a8a2ee0c | 630 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
631 | } |
632 | ||
e2fa7227 CM |
633 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
634 | struct btrfs_disk_key *disk) | |
635 | { | |
636 | cpu->offset = le64_to_cpu(disk->offset); | |
637 | cpu->flags = le32_to_cpu(disk->flags); | |
638 | cpu->objectid = le64_to_cpu(disk->objectid); | |
639 | } | |
640 | ||
641 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
642 | struct btrfs_key *cpu) | |
643 | { | |
644 | disk->offset = cpu_to_le64(cpu->offset); | |
645 | disk->flags = cpu_to_le32(cpu->flags); | |
646 | disk->objectid = cpu_to_le64(cpu->objectid); | |
647 | } | |
648 | ||
62e2749e | 649 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
650 | { |
651 | return le64_to_cpu(disk->objectid); | |
652 | } | |
653 | ||
62e2749e CM |
654 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
655 | u64 val) | |
e2fa7227 CM |
656 | { |
657 | disk->objectid = cpu_to_le64(val); | |
658 | } | |
659 | ||
62e2749e | 660 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
661 | { |
662 | return le64_to_cpu(disk->offset); | |
663 | } | |
664 | ||
62e2749e CM |
665 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
666 | u64 val) | |
e2fa7227 CM |
667 | { |
668 | disk->offset = cpu_to_le64(val); | |
669 | } | |
670 | ||
62e2749e | 671 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
672 | { |
673 | return le32_to_cpu(disk->flags); | |
674 | } | |
675 | ||
62e2749e CM |
676 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
677 | u32 val) | |
e2fa7227 CM |
678 | { |
679 | disk->flags = cpu_to_le32(val); | |
680 | } | |
681 | ||
a429e513 | 682 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 683 | { |
a429e513 | 684 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
685 | } |
686 | ||
a429e513 CM |
687 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
688 | u32 val) | |
7fcde0e3 | 689 | { |
a429e513 CM |
690 | u32 flags = btrfs_disk_key_flags(key); |
691 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
692 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
693 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
694 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
695 | } |
696 | ||
62e2749e CM |
697 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
698 | { | |
a429e513 | 699 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
700 | } |
701 | ||
a429e513 | 702 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 703 | { |
a429e513 CM |
704 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
705 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
706 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
707 | } |
708 | ||
bb492bb0 | 709 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 710 | { |
bb492bb0 | 711 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
712 | } |
713 | ||
bb492bb0 | 714 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 715 | { |
bb492bb0 | 716 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
717 | } |
718 | ||
7f5c1516 CM |
719 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
720 | { | |
721 | return le64_to_cpu(h->generation); | |
722 | } | |
723 | ||
724 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
725 | u64 val) | |
726 | { | |
727 | h->generation = cpu_to_le64(val); | |
728 | } | |
729 | ||
4d775673 CM |
730 | static inline u64 btrfs_header_owner(struct btrfs_header *h) |
731 | { | |
732 | return le64_to_cpu(h->owner); | |
733 | } | |
734 | ||
735 | static inline void btrfs_set_header_owner(struct btrfs_header *h, | |
736 | u64 val) | |
737 | { | |
738 | h->owner = cpu_to_le64(val); | |
739 | } | |
740 | ||
bb492bb0 | 741 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 742 | { |
bb492bb0 | 743 | return le16_to_cpu(h->nritems); |
7518a238 CM |
744 | } |
745 | ||
bb492bb0 | 746 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 747 | { |
bb492bb0 | 748 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
749 | } |
750 | ||
bb492bb0 | 751 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 752 | { |
bb492bb0 | 753 | return le16_to_cpu(h->flags); |
7518a238 CM |
754 | } |
755 | ||
bb492bb0 | 756 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 757 | { |
bb492bb0 | 758 | h->flags = cpu_to_le16(val); |
7518a238 CM |
759 | } |
760 | ||
bb492bb0 | 761 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 762 | { |
9a6f11ed | 763 | return h->level; |
7518a238 CM |
764 | } |
765 | ||
bb492bb0 | 766 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 767 | { |
234b63a0 | 768 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 769 | h->level = level; |
7518a238 CM |
770 | } |
771 | ||
234b63a0 | 772 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
773 | { |
774 | return (btrfs_header_level(&n->header) == 0); | |
775 | } | |
776 | ||
3768f368 CM |
777 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
778 | { | |
779 | return le64_to_cpu(item->blocknr); | |
780 | } | |
781 | ||
782 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
783 | { | |
784 | item->blocknr = cpu_to_le64(val); | |
785 | } | |
786 | ||
d6e4a428 CM |
787 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
788 | { | |
789 | return le64_to_cpu(item->root_dirid); | |
790 | } | |
791 | ||
792 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
793 | { | |
794 | item->root_dirid = cpu_to_le64(val); | |
795 | } | |
796 | ||
3768f368 CM |
797 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
798 | { | |
799 | return le32_to_cpu(item->refs); | |
800 | } | |
801 | ||
802 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
803 | { | |
804 | item->refs = cpu_to_le32(val); | |
805 | } | |
806 | ||
807 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) | |
808 | { | |
809 | return le64_to_cpu(s->blocknr); | |
810 | } | |
811 | ||
812 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
813 | { | |
814 | s->blocknr = cpu_to_le64(val); | |
815 | } | |
816 | ||
0f7d52f4 CM |
817 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
818 | { | |
819 | return le64_to_cpu(s->generation); | |
820 | } | |
821 | ||
822 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
823 | u64 val) | |
824 | { | |
825 | s->generation = cpu_to_le64(val); | |
826 | } | |
827 | ||
3768f368 CM |
828 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
829 | { | |
830 | return le64_to_cpu(s->root); | |
831 | } | |
832 | ||
833 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
834 | { | |
835 | s->root = cpu_to_le64(val); | |
836 | } | |
837 | ||
838 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
839 | { | |
840 | return le64_to_cpu(s->total_blocks); | |
841 | } | |
842 | ||
843 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
844 | u64 val) | |
845 | { | |
846 | s->total_blocks = cpu_to_le64(val); | |
847 | } | |
848 | ||
849 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
850 | { | |
851 | return le64_to_cpu(s->blocks_used); | |
852 | } | |
853 | ||
854 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
855 | u64 val) | |
856 | { | |
857 | s->blocks_used = cpu_to_le64(val); | |
858 | } | |
859 | ||
123abc88 | 860 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 861 | { |
123abc88 | 862 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
863 | } |
864 | ||
865 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
866 | u32 val) |
867 | { | |
868 | s->blocksize = cpu_to_le32(val); | |
869 | } | |
870 | ||
2e635a27 CM |
871 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
872 | { | |
873 | return le64_to_cpu(s->root_dir_objectid); | |
874 | } | |
875 | ||
876 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
877 | val) | |
878 | { | |
879 | s->root_dir_objectid = cpu_to_le64(val); | |
880 | } | |
881 | ||
123abc88 | 882 | static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) |
3768f368 | 883 | { |
123abc88 | 884 | return (u8 *)l->items; |
3768f368 | 885 | } |
9f5fae2f | 886 | |
236454df CM |
887 | static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e) |
888 | { | |
889 | return e->type; | |
890 | } | |
891 | static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e, | |
892 | u8 val) | |
893 | { | |
894 | e->type = val; | |
895 | } | |
896 | ||
897 | static inline char *btrfs_file_extent_inline_start(struct | |
898 | btrfs_file_extent_item *e) | |
899 | { | |
900 | return (char *)(&e->disk_blocknr); | |
901 | } | |
902 | ||
903 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
904 | { | |
905 | return (unsigned long)(&((struct | |
906 | btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize; | |
907 | } | |
908 | ||
909 | static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e) | |
910 | { | |
911 | struct btrfs_file_extent_item *fe = NULL; | |
912 | return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr); | |
913 | } | |
914 | ||
9f5fae2f CM |
915 | static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item |
916 | *e) | |
917 | { | |
918 | return le64_to_cpu(e->disk_blocknr); | |
919 | } | |
920 | ||
921 | static inline void btrfs_set_file_extent_disk_blocknr(struct | |
922 | btrfs_file_extent_item | |
923 | *e, u64 val) | |
924 | { | |
925 | e->disk_blocknr = cpu_to_le64(val); | |
926 | } | |
927 | ||
71951f35 CM |
928 | static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e) |
929 | { | |
930 | return le64_to_cpu(e->generation); | |
931 | } | |
932 | ||
933 | static inline void btrfs_set_file_extent_generation(struct | |
934 | btrfs_file_extent_item *e, | |
935 | u64 val) | |
936 | { | |
937 | e->generation = cpu_to_le64(val); | |
938 | } | |
939 | ||
9f5fae2f CM |
940 | static inline u64 btrfs_file_extent_disk_num_blocks(struct |
941 | btrfs_file_extent_item *e) | |
942 | { | |
943 | return le64_to_cpu(e->disk_num_blocks); | |
944 | } | |
945 | ||
946 | static inline void btrfs_set_file_extent_disk_num_blocks(struct | |
947 | btrfs_file_extent_item | |
948 | *e, u64 val) | |
949 | { | |
950 | e->disk_num_blocks = cpu_to_le64(val); | |
951 | } | |
952 | ||
953 | static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e) | |
954 | { | |
955 | return le64_to_cpu(e->offset); | |
956 | } | |
957 | ||
958 | static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item | |
959 | *e, u64 val) | |
960 | { | |
961 | e->offset = cpu_to_le64(val); | |
962 | } | |
963 | ||
964 | static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item | |
965 | *e) | |
966 | { | |
967 | return le64_to_cpu(e->num_blocks); | |
968 | } | |
969 | ||
970 | static inline void btrfs_set_file_extent_num_blocks(struct | |
971 | btrfs_file_extent_item *e, | |
972 | u64 val) | |
973 | { | |
974 | e->num_blocks = cpu_to_le64(val); | |
975 | } | |
976 | ||
e20d96d6 CM |
977 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
978 | { | |
979 | return sb->s_fs_info; | |
980 | } | |
981 | ||
d6025579 CM |
982 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
983 | void *vcontainer, size_t container_len) | |
984 | { | |
985 | char *ptr = vptr; | |
986 | char *container = vcontainer; | |
987 | WARN_ON(ptr < container); | |
988 | WARN_ON(ptr + len > container + container_len); | |
989 | } | |
990 | ||
991 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
992 | void *dst_block, | |
993 | void *dst, const void *src, size_t nr) | |
994 | { | |
995 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
996 | memcpy(dst, src, nr); | |
997 | } | |
998 | ||
999 | static inline void btrfs_memmove(struct btrfs_root *root, | |
1000 | void *dst_block, | |
1001 | void *dst, void *src, size_t nr) | |
1002 | { | |
1003 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1004 | memmove(dst, src, nr); | |
1005 | } | |
1006 | ||
1007 | static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) | |
1008 | { | |
1009 | WARN_ON(!atomic_read(&bh->b_count)); | |
1010 | mark_buffer_dirty(bh); | |
1011 | } | |
1012 | ||
4beb1b8b CM |
1013 | /* helper function to cast into the data area of the leaf. */ |
1014 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
1015 | ((type *)(btrfs_leaf_data(leaf) + \ |
1016 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 1017 | |
b18c6685 | 1018 | /* extent-tree.c */ |
5276aeda CM |
1019 | struct btrfs_block_group_cache *btrfs_lookup_block_group(struct |
1020 | btrfs_fs_info *info, | |
1021 | u64 blocknr); | |
31f3c99b CM |
1022 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1023 | struct btrfs_block_group_cache | |
be744175 | 1024 | *hint, u64 search_start, |
de428b63 | 1025 | int data, int owner); |
c5739bba CM |
1026 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
1027 | struct btrfs_root *root); | |
e20d96d6 | 1028 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
31f3c99b | 1029 | struct btrfs_root *root, u64 hint); |
4d775673 CM |
1030 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
1031 | struct btrfs_root *root, u64 owner, | |
c62a1920 | 1032 | u64 num_blocks, u64 search_start, |
be08c1b9 | 1033 | u64 search_end, struct btrfs_key *ins, int data); |
e089f05c | 1034 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1035 | struct buffer_head *buf); |
e089f05c CM |
1036 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1037 | *root, u64 blocknr, u64 num_blocks, int pin); | |
dee26a9f CM |
1038 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct |
1039 | btrfs_root *root); | |
b18c6685 CM |
1040 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1041 | struct btrfs_root *root, | |
1042 | u64 blocknr, u64 num_blocks); | |
9078a3e1 CM |
1043 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1044 | struct btrfs_root *root); | |
1045 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1046 | int btrfs_read_block_groups(struct btrfs_root *root); | |
dee26a9f | 1047 | /* ctree.c */ |
6567e837 CM |
1048 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1049 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1050 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1051 | struct btrfs_root *root, | |
1052 | struct btrfs_path *path, | |
1053 | u32 new_size); | |
e089f05c CM |
1054 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1055 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1056 | ins_len, int cow); | |
234b63a0 | 1057 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1058 | struct btrfs_path *btrfs_alloc_path(void); |
1059 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1060 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1061 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1062 | struct btrfs_path *path); | |
1063 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1064 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1065 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1066 | *root, struct btrfs_path *path, struct btrfs_key | |
1067 | *cpu_key, u32 data_size); | |
234b63a0 | 1068 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1069 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1070 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
e20d96d6 | 1071 | *root, struct buffer_head *snap); |
dee26a9f | 1072 | /* root-item.c */ |
e089f05c CM |
1073 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1074 | struct btrfs_key *key); | |
1075 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1076 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1077 | *item); | |
1078 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1079 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1080 | *item); | |
1081 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1082 | btrfs_root_item *item, struct btrfs_key *key); | |
dee26a9f | 1083 | /* dir-item.c */ |
e089f05c | 1084 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1085 | *root, const char *name, int name_len, u64 dir, |
1086 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1087 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1088 | struct btrfs_root *root, | |
1089 | struct btrfs_path *path, u64 dir, | |
1090 | const char *name, int name_len, | |
1091 | int mod); | |
1092 | struct btrfs_dir_item * | |
1093 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1094 | struct btrfs_root *root, | |
1095 | struct btrfs_path *path, u64 dir, | |
1096 | u64 objectid, const char *name, int name_len, | |
1097 | int mod); | |
1098 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1099 | struct btrfs_path *path, | |
7f5c1516 | 1100 | const char *name, int name_len); |
7e38180e CM |
1101 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1102 | struct btrfs_root *root, | |
1103 | struct btrfs_path *path, | |
1104 | struct btrfs_dir_item *di); | |
dee26a9f | 1105 | /* inode-map.c */ |
9f5fae2f CM |
1106 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1107 | struct btrfs_root *fs_root, | |
1108 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1109 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1110 | ||
dee26a9f | 1111 | /* inode-item.c */ |
293ffd5f CM |
1112 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1113 | *root, u64 objectid, struct btrfs_inode_item | |
1114 | *inode_item); | |
1115 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1116 | *root, struct btrfs_path *path, |
1117 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1118 | |
1119 | /* file-item.c */ | |
b18c6685 | 1120 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1121 | struct btrfs_root *root, |
b18c6685 | 1122 | u64 objectid, u64 pos, u64 offset, |
3a686375 | 1123 | u64 disk_num_blocks, |
b18c6685 | 1124 | u64 num_blocks); |
dee26a9f CM |
1125 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1126 | struct btrfs_root *root, | |
1127 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1128 | u64 blocknr, int mod); |
f254e52c CM |
1129 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1130 | struct btrfs_root *root, | |
1131 | u64 objectid, u64 offset, | |
1132 | char *data, size_t len); | |
1133 | int btrfs_csum_verify_file_block(struct btrfs_root *root, | |
1134 | u64 objectid, u64 offset, | |
1135 | char *data, size_t len); | |
b18c6685 CM |
1136 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1137 | struct btrfs_root *root, | |
1138 | struct btrfs_path *path, | |
1139 | u64 objectid, u64 offset, | |
1140 | int cow); | |
1de037a4 CM |
1141 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1142 | struct btrfs_root *root, struct btrfs_path *path, | |
1143 | u64 isize); | |
39279cc3 CM |
1144 | /* inode.c */ |
1145 | void btrfs_delete_inode(struct inode *inode); | |
1146 | void btrfs_read_locked_inode(struct inode *inode); | |
1147 | int btrfs_write_inode(struct inode *inode, int wait); | |
1148 | void btrfs_dirty_inode(struct inode *inode); | |
1149 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
1150 | void btrfs_destroy_inode(struct inode *inode); | |
1151 | int btrfs_init_cachep(void); | |
1152 | void btrfs_destroy_cachep(void); | |
1153 | int btrfs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, | |
1154 | unsigned long arg); | |
1155 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, | |
1156 | unsigned long arg); | |
1157 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, | |
1158 | struct btrfs_root *root); | |
1159 | int btrfs_commit_write(struct file *file, struct page *page, | |
1160 | unsigned from, unsigned to); | |
1161 | int btrfs_get_block(struct inode *inode, sector_t iblock, | |
1162 | struct buffer_head *result, int create); | |
1163 | /* file.c */ | |
1164 | extern struct file_operations btrfs_file_operations; | |
1165 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
1166 | struct btrfs_root *root, struct inode *inode, | |
1167 | u64 start, u64 end, u64 *hint_block); | |
eb60ceac | 1168 | #endif |