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234b63a0 CM |
1 | #ifndef __BTRFS__ |
2 | #define __BTRFS__ | |
eb60ceac | 3 | |
e20d96d6 | 4 | #include <linux/fs.h> |
d6025579 | 5 | #include <linux/buffer_head.h> |
d6e4a428 | 6 | #include <linux/kobject.h> |
8ef97622 | 7 | #include "bit-radix.h" |
e20d96d6 | 8 | |
e089f05c | 9 | struct btrfs_trans_handle; |
79154b1b | 10 | struct btrfs_transaction; |
2c90e5d6 | 11 | extern struct kmem_cache *btrfs_path_cachep; |
e089f05c | 12 | |
3768f368 | 13 | #define BTRFS_MAGIC "_BtRfS_M" |
eb60ceac | 14 | |
6407bf6d | 15 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0bd93ba0 CM |
16 | #define BTRFS_DEV_TREE_OBJECTID 2ULL |
17 | #define BTRFS_EXTENT_TREE_OBJECTID 3ULL | |
18 | #define BTRFS_FS_TREE_OBJECTID 4ULL | |
19 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 5ULL | |
20 | #define BTRFS_FIRST_FREE_OBJECTID 6ULL | |
3768f368 | 21 | |
e20d96d6 CM |
22 | /* |
23 | * we can actually store much bigger names, but lets not confuse the rest | |
24 | * of linux | |
25 | */ | |
26 | #define BTRFS_NAME_LEN 255 | |
27 | ||
f254e52c CM |
28 | /* 32 bytes in various csum fields */ |
29 | #define BTRFS_CSUM_SIZE 32 | |
30 | ||
fec577fb CM |
31 | /* |
32 | * the key defines the order in the tree, and so it also defines (optimal) | |
33 | * block layout. objectid corresonds to the inode number. The flags | |
34 | * tells us things about the object, and is a kind of stream selector. | |
35 | * so for a given inode, keys with flags of 1 might refer to the inode | |
36 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
37 | * may point to extents. | |
38 | * | |
39 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
40 | * |
41 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
42 | * in cpu native order. Otherwise they are identical and their sizes | |
43 | * should be the same (ie both packed) | |
fec577fb | 44 | */ |
e2fa7227 CM |
45 | struct btrfs_disk_key { |
46 | __le64 objectid; | |
f254e52c | 47 | __le32 flags; |
70b2befd | 48 | __le64 offset; |
e2fa7227 CM |
49 | } __attribute__ ((__packed__)); |
50 | ||
51 | struct btrfs_key { | |
eb60ceac | 52 | u64 objectid; |
f254e52c | 53 | u32 flags; |
70b2befd | 54 | u64 offset; |
eb60ceac CM |
55 | } __attribute__ ((__packed__)); |
56 | ||
fec577fb CM |
57 | /* |
58 | * every tree block (leaf or node) starts with this header. | |
59 | */ | |
bb492bb0 | 60 | struct btrfs_header { |
f254e52c | 61 | u8 csum[BTRFS_CSUM_SIZE]; |
3768f368 | 62 | u8 fsid[16]; /* FS specific uuid */ |
bb492bb0 | 63 | __le64 blocknr; /* which block this node is supposed to live in */ |
7f5c1516 | 64 | __le64 generation; |
4d775673 | 65 | __le64 owner; |
bb492bb0 CM |
66 | __le16 nritems; |
67 | __le16 flags; | |
9a6f11ed | 68 | u8 level; |
eb60ceac CM |
69 | } __attribute__ ((__packed__)); |
70 | ||
234b63a0 | 71 | #define BTRFS_MAX_LEVEL 8 |
123abc88 CM |
72 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \ |
73 | sizeof(struct btrfs_header)) / \ | |
74 | (sizeof(struct btrfs_disk_key) + sizeof(u64))) | |
75 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) | |
76 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize)) | |
236454df CM |
77 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
78 | sizeof(struct btrfs_item) - \ | |
79 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 80 | |
e20d96d6 | 81 | struct buffer_head; |
fec577fb CM |
82 | /* |
83 | * the super block basically lists the main trees of the FS | |
84 | * it currently lacks any block count etc etc | |
85 | */ | |
234b63a0 | 86 | struct btrfs_super_block { |
f254e52c | 87 | u8 csum[BTRFS_CSUM_SIZE]; |
87cbda5c | 88 | /* the first 3 fields must match struct btrfs_header */ |
3768f368 CM |
89 | u8 fsid[16]; /* FS specific uuid */ |
90 | __le64 blocknr; /* this block number */ | |
3768f368 | 91 | __le64 magic; |
123abc88 | 92 | __le32 blocksize; |
3768f368 CM |
93 | __le64 generation; |
94 | __le64 root; | |
95 | __le64 total_blocks; | |
96 | __le64 blocks_used; | |
2e635a27 | 97 | __le64 root_dir_objectid; |
b4100d64 | 98 | __le64 last_device_id; |
0bd93ba0 CM |
99 | /* fields below here vary with the underlying disk */ |
100 | __le64 device_block_start; | |
101 | __le64 device_num_blocks; | |
102 | __le64 device_root; | |
b4100d64 | 103 | __le64 device_id; |
cfaa7295 CM |
104 | } __attribute__ ((__packed__)); |
105 | ||
fec577fb | 106 | /* |
62e2749e | 107 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
108 | * the item in the leaf (relative to the start of the data area) |
109 | */ | |
0783fcfc | 110 | struct btrfs_item { |
e2fa7227 | 111 | struct btrfs_disk_key key; |
123abc88 | 112 | __le32 offset; |
0783fcfc | 113 | __le16 size; |
eb60ceac CM |
114 | } __attribute__ ((__packed__)); |
115 | ||
fec577fb CM |
116 | /* |
117 | * leaves have an item area and a data area: | |
118 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
119 | * | |
120 | * The data is separate from the items to get the keys closer together | |
121 | * during searches. | |
122 | */ | |
234b63a0 | 123 | struct btrfs_leaf { |
bb492bb0 | 124 | struct btrfs_header header; |
123abc88 | 125 | struct btrfs_item items[]; |
eb60ceac CM |
126 | } __attribute__ ((__packed__)); |
127 | ||
fec577fb CM |
128 | /* |
129 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
130 | * other blocks | |
131 | */ | |
123abc88 CM |
132 | struct btrfs_key_ptr { |
133 | struct btrfs_disk_key key; | |
134 | __le64 blockptr; | |
135 | } __attribute__ ((__packed__)); | |
136 | ||
234b63a0 | 137 | struct btrfs_node { |
bb492bb0 | 138 | struct btrfs_header header; |
123abc88 | 139 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
140 | } __attribute__ ((__packed__)); |
141 | ||
fec577fb | 142 | /* |
234b63a0 CM |
143 | * btrfs_paths remember the path taken from the root down to the leaf. |
144 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
145 | * to any other levels that are present. |
146 | * | |
147 | * The slots array records the index of the item or block pointer | |
148 | * used while walking the tree. | |
149 | */ | |
234b63a0 | 150 | struct btrfs_path { |
e20d96d6 | 151 | struct buffer_head *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 152 | int slots[BTRFS_MAX_LEVEL]; |
eb60ceac | 153 | }; |
5de08d7d | 154 | |
62e2749e CM |
155 | /* |
156 | * items in the extent btree are used to record the objectid of the | |
157 | * owner of the block and the number of references | |
158 | */ | |
159 | struct btrfs_extent_item { | |
160 | __le32 refs; | |
4d775673 | 161 | __le64 owner; |
62e2749e CM |
162 | } __attribute__ ((__packed__)); |
163 | ||
1e1d2701 | 164 | struct btrfs_inode_timespec { |
f254e52c | 165 | __le64 sec; |
1e1d2701 CM |
166 | __le32 nsec; |
167 | } __attribute__ ((__packed__)); | |
168 | ||
169 | /* | |
170 | * there is no padding here on purpose. If you want to extent the inode, | |
171 | * make a new item type | |
172 | */ | |
173 | struct btrfs_inode_item { | |
174 | __le64 generation; | |
175 | __le64 size; | |
176 | __le64 nblocks; | |
31f3c99b | 177 | __le64 block_group; |
1e1d2701 CM |
178 | __le32 nlink; |
179 | __le32 uid; | |
180 | __le32 gid; | |
181 | __le32 mode; | |
182 | __le32 rdev; | |
183 | __le16 flags; | |
184 | __le16 compat_flags; | |
185 | struct btrfs_inode_timespec atime; | |
186 | struct btrfs_inode_timespec ctime; | |
187 | struct btrfs_inode_timespec mtime; | |
188 | struct btrfs_inode_timespec otime; | |
189 | } __attribute__ ((__packed__)); | |
190 | ||
62e2749e | 191 | struct btrfs_dir_item { |
d6e4a428 | 192 | struct btrfs_disk_key location; |
62e2749e | 193 | __le16 flags; |
a8a2ee0c | 194 | __le16 name_len; |
62e2749e CM |
195 | u8 type; |
196 | } __attribute__ ((__packed__)); | |
197 | ||
198 | struct btrfs_root_item { | |
d6e4a428 CM |
199 | struct btrfs_inode_item inode; |
200 | __le64 root_dirid; | |
62e2749e CM |
201 | __le64 blocknr; |
202 | __le32 flags; | |
203 | __le64 block_limit; | |
204 | __le64 blocks_used; | |
205 | __le32 refs; | |
9f5fae2f | 206 | } __attribute__ ((__packed__)); |
62e2749e | 207 | |
236454df CM |
208 | #define BTRFS_FILE_EXTENT_REG 0 |
209 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
210 | ||
9f5fae2f | 211 | struct btrfs_file_extent_item { |
71951f35 | 212 | __le64 generation; |
236454df | 213 | u8 type; |
9f5fae2f CM |
214 | /* |
215 | * disk space consumed by the extent, checksum blocks are included | |
216 | * in these numbers | |
217 | */ | |
218 | __le64 disk_blocknr; | |
219 | __le64 disk_num_blocks; | |
220 | /* | |
dee26a9f | 221 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
222 | * this extent record is for. This allows a file extent to point |
223 | * into the middle of an existing extent on disk, sharing it | |
224 | * between two snapshots (useful if some bytes in the middle of the | |
225 | * extent have changed | |
226 | */ | |
227 | __le64 offset; | |
228 | /* | |
229 | * the logical number of file blocks (no csums included) | |
230 | */ | |
231 | __le64 num_blocks; | |
232 | } __attribute__ ((__packed__)); | |
233 | ||
f254e52c CM |
234 | struct btrfs_csum_item { |
235 | u8 csum[BTRFS_CSUM_SIZE]; | |
236 | } __attribute__ ((__packed__)); | |
237 | ||
0bd93ba0 CM |
238 | struct btrfs_device_item { |
239 | __le16 pathlen; | |
b4100d64 | 240 | __le64 device_id; |
0bd93ba0 CM |
241 | } __attribute__ ((__packed__)); |
242 | ||
9078a3e1 CM |
243 | /* tag for the radix tree of block groups in ram */ |
244 | #define BTRFS_BLOCK_GROUP_DIRTY 0 | |
31f3c99b | 245 | #define BTRFS_BLOCK_GROUP_AVAIL 1 |
9078a3e1 CM |
246 | #define BTRFS_BLOCK_GROUP_HINTS 8 |
247 | #define BTRFS_BLOCK_GROUP_SIZE (256 * 1024 * 1024) | |
248 | struct btrfs_block_group_item { | |
249 | __le64 used; | |
250 | } __attribute__ ((__packed__)); | |
251 | ||
252 | struct btrfs_block_group_cache { | |
253 | struct btrfs_key key; | |
254 | struct btrfs_block_group_item item; | |
cd1bc465 CM |
255 | u64 first_free; |
256 | u64 last_alloc; | |
9078a3e1 CM |
257 | }; |
258 | ||
87cbda5c | 259 | struct crypto_hash; |
9f5fae2f | 260 | struct btrfs_fs_info { |
62e2749e CM |
261 | struct btrfs_root *extent_root; |
262 | struct btrfs_root *tree_root; | |
0bd93ba0 | 263 | struct btrfs_root *dev_root; |
cd1bc465 | 264 | struct btrfs_block_group_cache *block_group_cache; |
0f7d52f4 | 265 | struct radix_tree_root fs_roots_radix; |
8ef97622 | 266 | struct radix_tree_root pending_del_radix; |
62e2749e | 267 | struct radix_tree_root pinned_radix; |
7eccb903 | 268 | struct radix_tree_root dev_radix; |
9078a3e1 | 269 | struct radix_tree_root block_group_radix; |
f2458e1d CM |
270 | |
271 | u64 extent_tree_insert[BTRFS_MAX_LEVEL * 3]; | |
272 | int extent_tree_insert_nr; | |
273 | u64 extent_tree_prealloc[BTRFS_MAX_LEVEL * 3]; | |
274 | int extent_tree_prealloc_nr; | |
275 | ||
293ffd5f | 276 | u64 generation; |
79154b1b | 277 | struct btrfs_transaction *running_transaction; |
1261ec42 | 278 | struct btrfs_super_block *disk_super; |
e20d96d6 CM |
279 | struct buffer_head *sb_buffer; |
280 | struct super_block *sb; | |
d98237b3 | 281 | struct inode *btree_inode; |
79154b1b | 282 | struct mutex trans_mutex; |
d561c025 | 283 | struct mutex fs_mutex; |
8fd17795 | 284 | struct list_head trans_list; |
87cbda5c CM |
285 | struct crypto_hash *hash_tfm; |
286 | spinlock_t hash_lock; | |
e66f709b | 287 | int do_barriers; |
d6e4a428 | 288 | struct kobject kobj; |
9f5fae2f CM |
289 | }; |
290 | ||
291 | /* | |
292 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 293 | * and for the extent tree extent_root root. |
9f5fae2f CM |
294 | */ |
295 | struct btrfs_root { | |
e20d96d6 CM |
296 | struct buffer_head *node; |
297 | struct buffer_head *commit_root; | |
62e2749e CM |
298 | struct btrfs_root_item root_item; |
299 | struct btrfs_key root_key; | |
9f5fae2f | 300 | struct btrfs_fs_info *fs_info; |
0f7d52f4 CM |
301 | struct inode *inode; |
302 | u64 objectid; | |
303 | u64 last_trans; | |
62e2749e | 304 | u32 blocksize; |
9f5fae2f CM |
305 | int ref_cows; |
306 | u32 type; | |
1b05da2e CM |
307 | u64 highest_inode; |
308 | u64 last_inode_alloc; | |
62e2749e CM |
309 | }; |
310 | ||
62e2749e CM |
311 | /* the lower bits in the key flags defines the item type */ |
312 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
313 | #define BTRFS_KEY_TYPE_SHIFT 24 |
314 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
315 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
316 | |
317 | /* | |
318 | * inode items have the data typically returned from stat and store other | |
319 | * info about object characteristics. There is one for every file and dir in | |
320 | * the FS | |
321 | */ | |
9078a3e1 CM |
322 | #define BTRFS_INODE_ITEM_KEY 1 |
323 | ||
324 | /* reserve 2-15 close to the inode for later flexibility */ | |
1e1d2701 CM |
325 | |
326 | /* | |
327 | * dir items are the name -> inode pointers in a directory. There is one | |
328 | * for every name in a directory. | |
329 | */ | |
9078a3e1 CM |
330 | #define BTRFS_DIR_ITEM_KEY 16 |
331 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 332 | /* |
9078a3e1 | 333 | * extent data is for file data |
1e1d2701 | 334 | */ |
9078a3e1 | 335 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
336 | /* |
337 | * csum items have the checksums for data in the extents | |
338 | */ | |
9078a3e1 CM |
339 | #define BTRFS_CSUM_ITEM_KEY 19 |
340 | ||
341 | /* reserve 20-31 for other file stuff */ | |
f254e52c | 342 | |
1e1d2701 CM |
343 | /* |
344 | * root items point to tree roots. There are typically in the root | |
345 | * tree used by the super block to find all the other trees | |
346 | */ | |
9078a3e1 | 347 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
348 | /* |
349 | * extent items are in the extent map tree. These record which blocks | |
350 | * are used, and how many references there are to each block | |
351 | */ | |
9078a3e1 CM |
352 | #define BTRFS_EXTENT_ITEM_KEY 33 |
353 | ||
354 | /* | |
355 | * block groups give us hints into the extent allocation trees. Which | |
356 | * blocks are free etc etc | |
357 | */ | |
358 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 34 | |
9f5fae2f | 359 | |
0bd93ba0 CM |
360 | /* |
361 | * dev items list the devices that make up the FS | |
362 | */ | |
9078a3e1 | 363 | #define BTRFS_DEV_ITEM_KEY 35 |
0bd93ba0 | 364 | |
1e1d2701 CM |
365 | /* |
366 | * string items are for debugging. They just store a short string of | |
367 | * data in the FS | |
368 | */ | |
9078a3e1 CM |
369 | #define BTRFS_STRING_ITEM_KEY 253 |
370 | ||
371 | ||
372 | static inline u64 btrfs_block_group_used(struct btrfs_block_group_item *bi) | |
373 | { | |
374 | return le64_to_cpu(bi->used); | |
375 | } | |
376 | ||
377 | static inline void btrfs_set_block_group_used(struct | |
378 | btrfs_block_group_item *bi, | |
379 | u64 val) | |
380 | { | |
381 | bi->used = cpu_to_le64(val); | |
382 | } | |
1e1d2701 CM |
383 | |
384 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
385 | { | |
386 | return le64_to_cpu(i->generation); | |
387 | } | |
388 | ||
389 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
390 | u64 val) | |
391 | { | |
392 | i->generation = cpu_to_le64(val); | |
393 | } | |
394 | ||
395 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
396 | { | |
397 | return le64_to_cpu(i->size); | |
398 | } | |
399 | ||
400 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
401 | { | |
402 | i->size = cpu_to_le64(val); | |
403 | } | |
404 | ||
405 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
406 | { | |
407 | return le64_to_cpu(i->nblocks); | |
408 | } | |
409 | ||
410 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
411 | { | |
412 | i->nblocks = cpu_to_le64(val); | |
413 | } | |
414 | ||
31f3c99b CM |
415 | static inline u64 btrfs_inode_block_group(struct btrfs_inode_item *i) |
416 | { | |
417 | return le64_to_cpu(i->block_group); | |
418 | } | |
419 | ||
420 | static inline void btrfs_set_inode_block_group(struct btrfs_inode_item *i, | |
421 | u64 val) | |
422 | { | |
423 | i->block_group = cpu_to_le64(val); | |
424 | } | |
425 | ||
1e1d2701 CM |
426 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) |
427 | { | |
428 | return le32_to_cpu(i->nlink); | |
429 | } | |
430 | ||
431 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
432 | { | |
433 | i->nlink = cpu_to_le32(val); | |
434 | } | |
435 | ||
436 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
437 | { | |
438 | return le32_to_cpu(i->uid); | |
439 | } | |
440 | ||
441 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
442 | { | |
443 | i->uid = cpu_to_le32(val); | |
444 | } | |
445 | ||
446 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
447 | { | |
448 | return le32_to_cpu(i->gid); | |
449 | } | |
450 | ||
451 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
452 | { | |
453 | i->gid = cpu_to_le32(val); | |
454 | } | |
455 | ||
456 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
457 | { | |
458 | return le32_to_cpu(i->mode); | |
459 | } | |
460 | ||
461 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
462 | { | |
463 | i->mode = cpu_to_le32(val); | |
464 | } | |
465 | ||
466 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
467 | { | |
468 | return le32_to_cpu(i->rdev); | |
469 | } | |
470 | ||
471 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
472 | { | |
473 | i->rdev = cpu_to_le32(val); | |
474 | } | |
475 | ||
476 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
477 | { | |
478 | return le16_to_cpu(i->flags); | |
479 | } | |
480 | ||
481 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
482 | { | |
483 | i->flags = cpu_to_le16(val); | |
484 | } | |
485 | ||
486 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
487 | { | |
488 | return le16_to_cpu(i->compat_flags); | |
489 | } | |
490 | ||
491 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
492 | u16 val) | |
493 | { | |
494 | i->compat_flags = cpu_to_le16(val); | |
495 | } | |
496 | ||
f254e52c | 497 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 498 | { |
f254e52c | 499 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
500 | } |
501 | ||
502 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 503 | u64 val) |
e20d96d6 | 504 | { |
f254e52c | 505 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
506 | } |
507 | ||
508 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
509 | { | |
510 | return le32_to_cpu(ts->nsec); | |
511 | } | |
512 | ||
513 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
514 | u32 val) | |
515 | { | |
516 | ts->nsec = cpu_to_le32(val); | |
517 | } | |
518 | ||
234b63a0 | 519 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
520 | { |
521 | return le32_to_cpu(ei->refs); | |
522 | } | |
523 | ||
234b63a0 | 524 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
525 | { |
526 | ei->refs = cpu_to_le32(val); | |
527 | } | |
528 | ||
4d775673 CM |
529 | static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei) |
530 | { | |
531 | return le64_to_cpu(ei->owner); | |
532 | } | |
533 | ||
534 | static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val) | |
535 | { | |
536 | ei->owner = cpu_to_le64(val); | |
537 | } | |
538 | ||
234b63a0 | 539 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 540 | { |
123abc88 | 541 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
542 | } |
543 | ||
4d775673 | 544 | |
234b63a0 CM |
545 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
546 | u64 val) | |
1d4f8a0c | 547 | { |
123abc88 | 548 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
549 | } |
550 | ||
123abc88 | 551 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 552 | { |
123abc88 | 553 | return le32_to_cpu(item->offset); |
0783fcfc CM |
554 | } |
555 | ||
123abc88 | 556 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 557 | { |
123abc88 | 558 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
559 | } |
560 | ||
123abc88 | 561 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 562 | { |
123abc88 | 563 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
564 | } |
565 | ||
566 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
567 | { | |
568 | return le16_to_cpu(item->size); | |
569 | } | |
570 | ||
571 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
572 | { | |
573 | item->size = cpu_to_le16(val); | |
574 | } | |
575 | ||
1d4f6404 CM |
576 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
577 | { | |
578 | return le16_to_cpu(d->flags); | |
579 | } | |
580 | ||
581 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
582 | { | |
583 | d->flags = cpu_to_le16(val); | |
584 | } | |
585 | ||
586 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
587 | { | |
588 | return d->type; | |
589 | } | |
590 | ||
591 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
592 | { | |
593 | d->type = val; | |
594 | } | |
595 | ||
a8a2ee0c CM |
596 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
597 | { | |
598 | return le16_to_cpu(d->name_len); | |
599 | } | |
600 | ||
601 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 602 | { |
a8a2ee0c | 603 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
604 | } |
605 | ||
e2fa7227 CM |
606 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
607 | struct btrfs_disk_key *disk) | |
608 | { | |
609 | cpu->offset = le64_to_cpu(disk->offset); | |
610 | cpu->flags = le32_to_cpu(disk->flags); | |
611 | cpu->objectid = le64_to_cpu(disk->objectid); | |
612 | } | |
613 | ||
614 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
615 | struct btrfs_key *cpu) | |
616 | { | |
617 | disk->offset = cpu_to_le64(cpu->offset); | |
618 | disk->flags = cpu_to_le32(cpu->flags); | |
619 | disk->objectid = cpu_to_le64(cpu->objectid); | |
620 | } | |
621 | ||
62e2749e | 622 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
623 | { |
624 | return le64_to_cpu(disk->objectid); | |
625 | } | |
626 | ||
62e2749e CM |
627 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
628 | u64 val) | |
e2fa7227 CM |
629 | { |
630 | disk->objectid = cpu_to_le64(val); | |
631 | } | |
632 | ||
62e2749e | 633 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
634 | { |
635 | return le64_to_cpu(disk->offset); | |
636 | } | |
637 | ||
62e2749e CM |
638 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
639 | u64 val) | |
e2fa7227 CM |
640 | { |
641 | disk->offset = cpu_to_le64(val); | |
642 | } | |
643 | ||
62e2749e | 644 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
645 | { |
646 | return le32_to_cpu(disk->flags); | |
647 | } | |
648 | ||
62e2749e CM |
649 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
650 | u32 val) | |
e2fa7227 CM |
651 | { |
652 | disk->flags = cpu_to_le32(val); | |
653 | } | |
654 | ||
a429e513 | 655 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 656 | { |
a429e513 | 657 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
658 | } |
659 | ||
a429e513 CM |
660 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
661 | u32 val) | |
7fcde0e3 | 662 | { |
a429e513 CM |
663 | u32 flags = btrfs_disk_key_flags(key); |
664 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
665 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
666 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
667 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
668 | } |
669 | ||
62e2749e CM |
670 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
671 | { | |
a429e513 | 672 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
673 | } |
674 | ||
a429e513 | 675 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 676 | { |
a429e513 CM |
677 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
678 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
679 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
680 | } |
681 | ||
bb492bb0 | 682 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 683 | { |
bb492bb0 | 684 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
685 | } |
686 | ||
bb492bb0 | 687 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 688 | { |
bb492bb0 | 689 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
690 | } |
691 | ||
7f5c1516 CM |
692 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
693 | { | |
694 | return le64_to_cpu(h->generation); | |
695 | } | |
696 | ||
697 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
698 | u64 val) | |
699 | { | |
700 | h->generation = cpu_to_le64(val); | |
701 | } | |
702 | ||
4d775673 CM |
703 | static inline u64 btrfs_header_owner(struct btrfs_header *h) |
704 | { | |
705 | return le64_to_cpu(h->owner); | |
706 | } | |
707 | ||
708 | static inline void btrfs_set_header_owner(struct btrfs_header *h, | |
709 | u64 val) | |
710 | { | |
711 | h->owner = cpu_to_le64(val); | |
712 | } | |
713 | ||
bb492bb0 | 714 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 715 | { |
bb492bb0 | 716 | return le16_to_cpu(h->nritems); |
7518a238 CM |
717 | } |
718 | ||
bb492bb0 | 719 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 720 | { |
bb492bb0 | 721 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
722 | } |
723 | ||
bb492bb0 | 724 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 725 | { |
bb492bb0 | 726 | return le16_to_cpu(h->flags); |
7518a238 CM |
727 | } |
728 | ||
bb492bb0 | 729 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 730 | { |
bb492bb0 | 731 | h->flags = cpu_to_le16(val); |
7518a238 CM |
732 | } |
733 | ||
bb492bb0 | 734 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 735 | { |
9a6f11ed | 736 | return h->level; |
7518a238 CM |
737 | } |
738 | ||
bb492bb0 | 739 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 740 | { |
234b63a0 | 741 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 742 | h->level = level; |
7518a238 CM |
743 | } |
744 | ||
234b63a0 | 745 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
746 | { |
747 | return (btrfs_header_level(&n->header) == 0); | |
748 | } | |
749 | ||
3768f368 CM |
750 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
751 | { | |
752 | return le64_to_cpu(item->blocknr); | |
753 | } | |
754 | ||
755 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
756 | { | |
757 | item->blocknr = cpu_to_le64(val); | |
758 | } | |
759 | ||
d6e4a428 CM |
760 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
761 | { | |
762 | return le64_to_cpu(item->root_dirid); | |
763 | } | |
764 | ||
765 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
766 | { | |
767 | item->root_dirid = cpu_to_le64(val); | |
768 | } | |
769 | ||
3768f368 CM |
770 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
771 | { | |
772 | return le32_to_cpu(item->refs); | |
773 | } | |
774 | ||
775 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
776 | { | |
777 | item->refs = cpu_to_le32(val); | |
778 | } | |
779 | ||
780 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) | |
781 | { | |
782 | return le64_to_cpu(s->blocknr); | |
783 | } | |
784 | ||
785 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
786 | { | |
787 | s->blocknr = cpu_to_le64(val); | |
788 | } | |
789 | ||
0f7d52f4 CM |
790 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
791 | { | |
792 | return le64_to_cpu(s->generation); | |
793 | } | |
794 | ||
795 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
796 | u64 val) | |
797 | { | |
798 | s->generation = cpu_to_le64(val); | |
799 | } | |
800 | ||
3768f368 CM |
801 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
802 | { | |
803 | return le64_to_cpu(s->root); | |
804 | } | |
805 | ||
806 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
807 | { | |
808 | s->root = cpu_to_le64(val); | |
809 | } | |
810 | ||
811 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
812 | { | |
813 | return le64_to_cpu(s->total_blocks); | |
814 | } | |
815 | ||
816 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
817 | u64 val) | |
818 | { | |
819 | s->total_blocks = cpu_to_le64(val); | |
820 | } | |
821 | ||
822 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
823 | { | |
824 | return le64_to_cpu(s->blocks_used); | |
825 | } | |
826 | ||
827 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
828 | u64 val) | |
829 | { | |
830 | s->blocks_used = cpu_to_le64(val); | |
831 | } | |
832 | ||
123abc88 | 833 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 834 | { |
123abc88 | 835 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
836 | } |
837 | ||
838 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
839 | u32 val) |
840 | { | |
841 | s->blocksize = cpu_to_le32(val); | |
842 | } | |
843 | ||
2e635a27 CM |
844 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
845 | { | |
846 | return le64_to_cpu(s->root_dir_objectid); | |
847 | } | |
848 | ||
849 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
850 | val) | |
851 | { | |
852 | s->root_dir_objectid = cpu_to_le64(val); | |
853 | } | |
854 | ||
b4100d64 CM |
855 | static inline u64 btrfs_super_last_device_id(struct btrfs_super_block *s) |
856 | { | |
857 | return le64_to_cpu(s->last_device_id); | |
858 | } | |
859 | ||
860 | static inline void btrfs_set_super_last_device_id(struct btrfs_super_block *s, | |
861 | u64 val) | |
862 | { | |
863 | s->last_device_id = cpu_to_le64(val); | |
864 | } | |
865 | ||
866 | static inline u64 btrfs_super_device_id(struct btrfs_super_block *s) | |
867 | { | |
868 | return le64_to_cpu(s->device_id); | |
869 | } | |
870 | ||
871 | static inline void btrfs_set_super_device_id(struct btrfs_super_block *s, | |
872 | u64 val) | |
873 | { | |
874 | s->device_id = cpu_to_le64(val); | |
875 | } | |
876 | ||
0bd93ba0 CM |
877 | static inline u64 btrfs_super_device_block_start(struct btrfs_super_block *s) |
878 | { | |
879 | return le64_to_cpu(s->device_block_start); | |
880 | } | |
881 | ||
882 | static inline void btrfs_set_super_device_block_start(struct btrfs_super_block | |
883 | *s, u64 val) | |
884 | { | |
885 | s->device_block_start = cpu_to_le64(val); | |
886 | } | |
887 | ||
888 | static inline u64 btrfs_super_device_num_blocks(struct btrfs_super_block *s) | |
889 | { | |
890 | return le64_to_cpu(s->device_num_blocks); | |
891 | } | |
892 | ||
893 | static inline void btrfs_set_super_device_num_blocks(struct btrfs_super_block | |
894 | *s, u64 val) | |
895 | { | |
896 | s->device_num_blocks = cpu_to_le64(val); | |
897 | } | |
898 | ||
899 | static inline u64 btrfs_super_device_root(struct btrfs_super_block *s) | |
900 | { | |
901 | return le64_to_cpu(s->device_root); | |
902 | } | |
903 | ||
904 | static inline void btrfs_set_super_device_root(struct btrfs_super_block | |
905 | *s, u64 val) | |
906 | { | |
907 | s->device_root = cpu_to_le64(val); | |
908 | } | |
909 | ||
910 | ||
123abc88 | 911 | static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) |
3768f368 | 912 | { |
123abc88 | 913 | return (u8 *)l->items; |
3768f368 | 914 | } |
9f5fae2f | 915 | |
236454df CM |
916 | static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e) |
917 | { | |
918 | return e->type; | |
919 | } | |
920 | static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e, | |
921 | u8 val) | |
922 | { | |
923 | e->type = val; | |
924 | } | |
925 | ||
926 | static inline char *btrfs_file_extent_inline_start(struct | |
927 | btrfs_file_extent_item *e) | |
928 | { | |
929 | return (char *)(&e->disk_blocknr); | |
930 | } | |
931 | ||
932 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
933 | { | |
934 | return (unsigned long)(&((struct | |
935 | btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize; | |
936 | } | |
937 | ||
938 | static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e) | |
939 | { | |
940 | struct btrfs_file_extent_item *fe = NULL; | |
941 | return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr); | |
942 | } | |
943 | ||
9f5fae2f CM |
944 | static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item |
945 | *e) | |
946 | { | |
947 | return le64_to_cpu(e->disk_blocknr); | |
948 | } | |
949 | ||
950 | static inline void btrfs_set_file_extent_disk_blocknr(struct | |
951 | btrfs_file_extent_item | |
952 | *e, u64 val) | |
953 | { | |
954 | e->disk_blocknr = cpu_to_le64(val); | |
955 | } | |
956 | ||
71951f35 CM |
957 | static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e) |
958 | { | |
959 | return le64_to_cpu(e->generation); | |
960 | } | |
961 | ||
962 | static inline void btrfs_set_file_extent_generation(struct | |
963 | btrfs_file_extent_item *e, | |
964 | u64 val) | |
965 | { | |
966 | e->generation = cpu_to_le64(val); | |
967 | } | |
968 | ||
9f5fae2f CM |
969 | static inline u64 btrfs_file_extent_disk_num_blocks(struct |
970 | btrfs_file_extent_item *e) | |
971 | { | |
972 | return le64_to_cpu(e->disk_num_blocks); | |
973 | } | |
974 | ||
975 | static inline void btrfs_set_file_extent_disk_num_blocks(struct | |
976 | btrfs_file_extent_item | |
977 | *e, u64 val) | |
978 | { | |
979 | e->disk_num_blocks = cpu_to_le64(val); | |
980 | } | |
981 | ||
982 | static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e) | |
983 | { | |
984 | return le64_to_cpu(e->offset); | |
985 | } | |
986 | ||
987 | static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item | |
988 | *e, u64 val) | |
989 | { | |
990 | e->offset = cpu_to_le64(val); | |
991 | } | |
992 | ||
993 | static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item | |
994 | *e) | |
995 | { | |
996 | return le64_to_cpu(e->num_blocks); | |
997 | } | |
998 | ||
999 | static inline void btrfs_set_file_extent_num_blocks(struct | |
1000 | btrfs_file_extent_item *e, | |
1001 | u64 val) | |
1002 | { | |
1003 | e->num_blocks = cpu_to_le64(val); | |
1004 | } | |
1005 | ||
0bd93ba0 CM |
1006 | static inline u16 btrfs_device_pathlen(struct btrfs_device_item *d) |
1007 | { | |
1008 | return le16_to_cpu(d->pathlen); | |
1009 | } | |
1010 | ||
1011 | static inline void btrfs_set_device_pathlen(struct btrfs_device_item *d, | |
1012 | u16 val) | |
1013 | { | |
1014 | d->pathlen = cpu_to_le16(val); | |
1015 | } | |
1016 | ||
b4100d64 CM |
1017 | static inline u64 btrfs_device_id(struct btrfs_device_item *d) |
1018 | { | |
1019 | return le64_to_cpu(d->device_id); | |
1020 | } | |
1021 | ||
1022 | static inline void btrfs_set_device_id(struct btrfs_device_item *d, | |
1023 | u64 val) | |
1024 | { | |
1025 | d->device_id = cpu_to_le64(val); | |
1026 | } | |
1027 | ||
e20d96d6 CM |
1028 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1029 | { | |
1030 | return sb->s_fs_info; | |
1031 | } | |
1032 | ||
d6025579 CM |
1033 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
1034 | void *vcontainer, size_t container_len) | |
1035 | { | |
1036 | char *ptr = vptr; | |
1037 | char *container = vcontainer; | |
1038 | WARN_ON(ptr < container); | |
1039 | WARN_ON(ptr + len > container + container_len); | |
1040 | } | |
1041 | ||
1042 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
1043 | void *dst_block, | |
1044 | void *dst, const void *src, size_t nr) | |
1045 | { | |
1046 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1047 | memcpy(dst, src, nr); | |
1048 | } | |
1049 | ||
1050 | static inline void btrfs_memmove(struct btrfs_root *root, | |
1051 | void *dst_block, | |
1052 | void *dst, void *src, size_t nr) | |
1053 | { | |
1054 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1055 | memmove(dst, src, nr); | |
1056 | } | |
1057 | ||
1058 | static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) | |
1059 | { | |
1060 | WARN_ON(!atomic_read(&bh->b_count)); | |
1061 | mark_buffer_dirty(bh); | |
1062 | } | |
1063 | ||
4beb1b8b CM |
1064 | /* helper function to cast into the data area of the leaf. */ |
1065 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
1066 | ((type *)(btrfs_leaf_data(leaf) + \ |
1067 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 1068 | |
b18c6685 | 1069 | /* extent-tree.c */ |
31f3c99b CM |
1070 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1071 | struct btrfs_block_group_cache | |
1072 | *hint, int data); | |
c5739bba CM |
1073 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
1074 | struct btrfs_root *root); | |
e20d96d6 | 1075 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
31f3c99b | 1076 | struct btrfs_root *root, u64 hint); |
4d775673 CM |
1077 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
1078 | struct btrfs_root *root, u64 owner, | |
c62a1920 | 1079 | u64 num_blocks, u64 search_start, |
4d775673 | 1080 | u64 search_end, struct btrfs_key *ins); |
e089f05c | 1081 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1082 | struct buffer_head *buf); |
e089f05c CM |
1083 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1084 | *root, u64 blocknr, u64 num_blocks, int pin); | |
dee26a9f CM |
1085 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct |
1086 | btrfs_root *root); | |
b18c6685 CM |
1087 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1088 | struct btrfs_root *root, | |
1089 | u64 blocknr, u64 num_blocks); | |
9078a3e1 CM |
1090 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1091 | struct btrfs_root *root); | |
1092 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1093 | int btrfs_read_block_groups(struct btrfs_root *root); | |
dee26a9f | 1094 | /* ctree.c */ |
6567e837 CM |
1095 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1096 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1097 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1098 | struct btrfs_root *root, | |
1099 | struct btrfs_path *path, | |
1100 | u32 new_size); | |
e089f05c CM |
1101 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1102 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1103 | ins_len, int cow); | |
234b63a0 | 1104 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1105 | struct btrfs_path *btrfs_alloc_path(void); |
1106 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1107 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1108 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1109 | struct btrfs_path *path); | |
1110 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1111 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1112 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1113 | *root, struct btrfs_path *path, struct btrfs_key | |
1114 | *cpu_key, u32 data_size); | |
234b63a0 | 1115 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1116 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1117 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
e20d96d6 | 1118 | *root, struct buffer_head *snap); |
dee26a9f | 1119 | /* root-item.c */ |
e089f05c CM |
1120 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1121 | struct btrfs_key *key); | |
1122 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1123 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1124 | *item); | |
1125 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1126 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1127 | *item); | |
1128 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1129 | btrfs_root_item *item, struct btrfs_key *key); | |
dee26a9f | 1130 | /* dir-item.c */ |
e089f05c | 1131 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1132 | *root, const char *name, int name_len, u64 dir, |
1133 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1134 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1135 | struct btrfs_root *root, | |
1136 | struct btrfs_path *path, u64 dir, | |
1137 | const char *name, int name_len, | |
1138 | int mod); | |
1139 | struct btrfs_dir_item * | |
1140 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1141 | struct btrfs_root *root, | |
1142 | struct btrfs_path *path, u64 dir, | |
1143 | u64 objectid, const char *name, int name_len, | |
1144 | int mod); | |
1145 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1146 | struct btrfs_path *path, | |
7f5c1516 | 1147 | const char *name, int name_len); |
7e38180e CM |
1148 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1149 | struct btrfs_root *root, | |
1150 | struct btrfs_path *path, | |
1151 | struct btrfs_dir_item *di); | |
dee26a9f | 1152 | /* inode-map.c */ |
9f5fae2f CM |
1153 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1154 | struct btrfs_root *fs_root, | |
1155 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1156 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1157 | ||
dee26a9f | 1158 | /* inode-item.c */ |
293ffd5f CM |
1159 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1160 | *root, u64 objectid, struct btrfs_inode_item | |
1161 | *inode_item); | |
1162 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1163 | *root, struct btrfs_path *path, |
1164 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1165 | |
1166 | /* file-item.c */ | |
b18c6685 | 1167 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1168 | struct btrfs_root *root, |
b18c6685 CM |
1169 | u64 objectid, u64 pos, u64 offset, |
1170 | u64 num_blocks); | |
dee26a9f CM |
1171 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1172 | struct btrfs_root *root, | |
1173 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1174 | u64 blocknr, int mod); |
f254e52c CM |
1175 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1176 | struct btrfs_root *root, | |
1177 | u64 objectid, u64 offset, | |
1178 | char *data, size_t len); | |
1179 | int btrfs_csum_verify_file_block(struct btrfs_root *root, | |
1180 | u64 objectid, u64 offset, | |
1181 | char *data, size_t len); | |
b18c6685 CM |
1182 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1183 | struct btrfs_root *root, | |
1184 | struct btrfs_path *path, | |
1185 | u64 objectid, u64 offset, | |
1186 | int cow); | |
d6e4a428 CM |
1187 | /* super.c */ |
1188 | extern struct subsystem btrfs_subsys; | |
1189 | ||
eb60ceac | 1190 | #endif |