Commit | Line | Data |
---|---|---|
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; |
35b7e476 CM |
11 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
12 | extern struct kmem_cache *btrfs_transaction_cachep; | |
13 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 14 | extern struct kmem_cache *btrfs_path_cachep; |
e089f05c | 15 | |
3768f368 | 16 | #define BTRFS_MAGIC "_BtRfS_M" |
eb60ceac | 17 | |
6407bf6d | 18 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0bd93ba0 CM |
19 | #define BTRFS_DEV_TREE_OBJECTID 2ULL |
20 | #define BTRFS_EXTENT_TREE_OBJECTID 3ULL | |
21 | #define BTRFS_FS_TREE_OBJECTID 4ULL | |
22 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 5ULL | |
23 | #define BTRFS_FIRST_FREE_OBJECTID 6ULL | |
3768f368 | 24 | |
e20d96d6 CM |
25 | /* |
26 | * we can actually store much bigger names, but lets not confuse the rest | |
27 | * of linux | |
28 | */ | |
29 | #define BTRFS_NAME_LEN 255 | |
30 | ||
f254e52c CM |
31 | /* 32 bytes in various csum fields */ |
32 | #define BTRFS_CSUM_SIZE 32 | |
33 | ||
fec577fb CM |
34 | /* |
35 | * the key defines the order in the tree, and so it also defines (optimal) | |
36 | * block layout. objectid corresonds to the inode number. The flags | |
37 | * tells us things about the object, and is a kind of stream selector. | |
38 | * so for a given inode, keys with flags of 1 might refer to the inode | |
39 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
40 | * may point to extents. | |
41 | * | |
42 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
43 | * |
44 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
45 | * in cpu native order. Otherwise they are identical and their sizes | |
46 | * should be the same (ie both packed) | |
fec577fb | 47 | */ |
e2fa7227 CM |
48 | struct btrfs_disk_key { |
49 | __le64 objectid; | |
f254e52c | 50 | __le32 flags; |
70b2befd | 51 | __le64 offset; |
e2fa7227 CM |
52 | } __attribute__ ((__packed__)); |
53 | ||
54 | struct btrfs_key { | |
eb60ceac | 55 | u64 objectid; |
f254e52c | 56 | u32 flags; |
70b2befd | 57 | u64 offset; |
eb60ceac CM |
58 | } __attribute__ ((__packed__)); |
59 | ||
fec577fb CM |
60 | /* |
61 | * every tree block (leaf or node) starts with this header. | |
62 | */ | |
bb492bb0 | 63 | struct btrfs_header { |
f254e52c | 64 | u8 csum[BTRFS_CSUM_SIZE]; |
3768f368 | 65 | u8 fsid[16]; /* FS specific uuid */ |
bb492bb0 | 66 | __le64 blocknr; /* which block this node is supposed to live in */ |
7f5c1516 | 67 | __le64 generation; |
4d775673 | 68 | __le64 owner; |
bb492bb0 CM |
69 | __le16 nritems; |
70 | __le16 flags; | |
9a6f11ed | 71 | u8 level; |
eb60ceac CM |
72 | } __attribute__ ((__packed__)); |
73 | ||
234b63a0 | 74 | #define BTRFS_MAX_LEVEL 8 |
123abc88 CM |
75 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \ |
76 | sizeof(struct btrfs_header)) / \ | |
77 | (sizeof(struct btrfs_disk_key) + sizeof(u64))) | |
78 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) | |
79 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize)) | |
236454df CM |
80 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
81 | sizeof(struct btrfs_item) - \ | |
82 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 83 | |
e20d96d6 | 84 | struct buffer_head; |
fec577fb CM |
85 | /* |
86 | * the super block basically lists the main trees of the FS | |
87 | * it currently lacks any block count etc etc | |
88 | */ | |
234b63a0 | 89 | struct btrfs_super_block { |
f254e52c | 90 | u8 csum[BTRFS_CSUM_SIZE]; |
87cbda5c | 91 | /* the first 3 fields must match struct btrfs_header */ |
3768f368 CM |
92 | u8 fsid[16]; /* FS specific uuid */ |
93 | __le64 blocknr; /* this block number */ | |
3768f368 | 94 | __le64 magic; |
123abc88 | 95 | __le32 blocksize; |
3768f368 CM |
96 | __le64 generation; |
97 | __le64 root; | |
98 | __le64 total_blocks; | |
99 | __le64 blocks_used; | |
2e635a27 | 100 | __le64 root_dir_objectid; |
b4100d64 | 101 | __le64 last_device_id; |
0bd93ba0 CM |
102 | /* fields below here vary with the underlying disk */ |
103 | __le64 device_block_start; | |
104 | __le64 device_num_blocks; | |
105 | __le64 device_root; | |
b4100d64 | 106 | __le64 device_id; |
cfaa7295 CM |
107 | } __attribute__ ((__packed__)); |
108 | ||
fec577fb | 109 | /* |
62e2749e | 110 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
111 | * the item in the leaf (relative to the start of the data area) |
112 | */ | |
0783fcfc | 113 | struct btrfs_item { |
e2fa7227 | 114 | struct btrfs_disk_key key; |
123abc88 | 115 | __le32 offset; |
0783fcfc | 116 | __le16 size; |
eb60ceac CM |
117 | } __attribute__ ((__packed__)); |
118 | ||
fec577fb CM |
119 | /* |
120 | * leaves have an item area and a data area: | |
121 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
122 | * | |
123 | * The data is separate from the items to get the keys closer together | |
124 | * during searches. | |
125 | */ | |
234b63a0 | 126 | struct btrfs_leaf { |
bb492bb0 | 127 | struct btrfs_header header; |
123abc88 | 128 | struct btrfs_item items[]; |
eb60ceac CM |
129 | } __attribute__ ((__packed__)); |
130 | ||
fec577fb CM |
131 | /* |
132 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
133 | * other blocks | |
134 | */ | |
123abc88 CM |
135 | struct btrfs_key_ptr { |
136 | struct btrfs_disk_key key; | |
137 | __le64 blockptr; | |
138 | } __attribute__ ((__packed__)); | |
139 | ||
234b63a0 | 140 | struct btrfs_node { |
bb492bb0 | 141 | struct btrfs_header header; |
123abc88 | 142 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
143 | } __attribute__ ((__packed__)); |
144 | ||
fec577fb | 145 | /* |
234b63a0 CM |
146 | * btrfs_paths remember the path taken from the root down to the leaf. |
147 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
148 | * to any other levels that are present. |
149 | * | |
150 | * The slots array records the index of the item or block pointer | |
151 | * used while walking the tree. | |
152 | */ | |
234b63a0 | 153 | struct btrfs_path { |
e20d96d6 | 154 | struct buffer_head *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 155 | int slots[BTRFS_MAX_LEVEL]; |
eb60ceac | 156 | }; |
5de08d7d | 157 | |
62e2749e CM |
158 | /* |
159 | * items in the extent btree are used to record the objectid of the | |
160 | * owner of the block and the number of references | |
161 | */ | |
162 | struct btrfs_extent_item { | |
163 | __le32 refs; | |
4d775673 | 164 | __le64 owner; |
62e2749e CM |
165 | } __attribute__ ((__packed__)); |
166 | ||
1e1d2701 | 167 | struct btrfs_inode_timespec { |
f254e52c | 168 | __le64 sec; |
1e1d2701 CM |
169 | __le32 nsec; |
170 | } __attribute__ ((__packed__)); | |
171 | ||
172 | /* | |
173 | * there is no padding here on purpose. If you want to extent the inode, | |
174 | * make a new item type | |
175 | */ | |
176 | struct btrfs_inode_item { | |
177 | __le64 generation; | |
178 | __le64 size; | |
179 | __le64 nblocks; | |
31f3c99b | 180 | __le64 block_group; |
1e1d2701 CM |
181 | __le32 nlink; |
182 | __le32 uid; | |
183 | __le32 gid; | |
184 | __le32 mode; | |
185 | __le32 rdev; | |
186 | __le16 flags; | |
187 | __le16 compat_flags; | |
188 | struct btrfs_inode_timespec atime; | |
189 | struct btrfs_inode_timespec ctime; | |
190 | struct btrfs_inode_timespec mtime; | |
191 | struct btrfs_inode_timespec otime; | |
192 | } __attribute__ ((__packed__)); | |
193 | ||
62e2749e | 194 | struct btrfs_dir_item { |
d6e4a428 | 195 | struct btrfs_disk_key location; |
62e2749e | 196 | __le16 flags; |
a8a2ee0c | 197 | __le16 name_len; |
62e2749e CM |
198 | u8 type; |
199 | } __attribute__ ((__packed__)); | |
200 | ||
201 | struct btrfs_root_item { | |
d6e4a428 CM |
202 | struct btrfs_inode_item inode; |
203 | __le64 root_dirid; | |
62e2749e CM |
204 | __le64 blocknr; |
205 | __le32 flags; | |
206 | __le64 block_limit; | |
207 | __le64 blocks_used; | |
208 | __le32 refs; | |
9f5fae2f | 209 | } __attribute__ ((__packed__)); |
62e2749e | 210 | |
236454df CM |
211 | #define BTRFS_FILE_EXTENT_REG 0 |
212 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
213 | ||
9f5fae2f | 214 | struct btrfs_file_extent_item { |
71951f35 | 215 | __le64 generation; |
236454df | 216 | u8 type; |
9f5fae2f CM |
217 | /* |
218 | * disk space consumed by the extent, checksum blocks are included | |
219 | * in these numbers | |
220 | */ | |
221 | __le64 disk_blocknr; | |
222 | __le64 disk_num_blocks; | |
223 | /* | |
dee26a9f | 224 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
225 | * this extent record is for. This allows a file extent to point |
226 | * into the middle of an existing extent on disk, sharing it | |
227 | * between two snapshots (useful if some bytes in the middle of the | |
228 | * extent have changed | |
229 | */ | |
230 | __le64 offset; | |
231 | /* | |
232 | * the logical number of file blocks (no csums included) | |
233 | */ | |
234 | __le64 num_blocks; | |
235 | } __attribute__ ((__packed__)); | |
236 | ||
f254e52c CM |
237 | struct btrfs_csum_item { |
238 | u8 csum[BTRFS_CSUM_SIZE]; | |
239 | } __attribute__ ((__packed__)); | |
240 | ||
0bd93ba0 CM |
241 | struct btrfs_device_item { |
242 | __le16 pathlen; | |
b4100d64 | 243 | __le64 device_id; |
0bd93ba0 CM |
244 | } __attribute__ ((__packed__)); |
245 | ||
9078a3e1 CM |
246 | /* tag for the radix tree of block groups in ram */ |
247 | #define BTRFS_BLOCK_GROUP_DIRTY 0 | |
31f3c99b | 248 | #define BTRFS_BLOCK_GROUP_AVAIL 1 |
9078a3e1 CM |
249 | #define BTRFS_BLOCK_GROUP_HINTS 8 |
250 | #define BTRFS_BLOCK_GROUP_SIZE (256 * 1024 * 1024) | |
251 | struct btrfs_block_group_item { | |
252 | __le64 used; | |
253 | } __attribute__ ((__packed__)); | |
254 | ||
255 | struct btrfs_block_group_cache { | |
256 | struct btrfs_key key; | |
257 | struct btrfs_block_group_item item; | |
3e1ad54f | 258 | struct radix_tree_root *radix; |
cd1bc465 CM |
259 | u64 first_free; |
260 | u64 last_alloc; | |
be744175 | 261 | u64 pinned; |
e37c9e69 | 262 | u64 last_prealloc; |
be744175 | 263 | int data; |
e37c9e69 | 264 | int cached; |
9078a3e1 CM |
265 | }; |
266 | ||
87cbda5c | 267 | struct crypto_hash; |
9f5fae2f | 268 | struct btrfs_fs_info { |
62e2749e CM |
269 | struct btrfs_root *extent_root; |
270 | struct btrfs_root *tree_root; | |
0bd93ba0 | 271 | struct btrfs_root *dev_root; |
0f7d52f4 | 272 | struct radix_tree_root fs_roots_radix; |
8ef97622 | 273 | struct radix_tree_root pending_del_radix; |
62e2749e | 274 | struct radix_tree_root pinned_radix; |
7eccb903 | 275 | struct radix_tree_root dev_radix; |
9078a3e1 | 276 | struct radix_tree_root block_group_radix; |
be744175 | 277 | struct radix_tree_root block_group_data_radix; |
e37c9e69 | 278 | struct radix_tree_root extent_map_radix; |
f2458e1d CM |
279 | |
280 | u64 extent_tree_insert[BTRFS_MAX_LEVEL * 3]; | |
281 | int extent_tree_insert_nr; | |
282 | u64 extent_tree_prealloc[BTRFS_MAX_LEVEL * 3]; | |
283 | int extent_tree_prealloc_nr; | |
284 | ||
293ffd5f | 285 | u64 generation; |
79154b1b | 286 | struct btrfs_transaction *running_transaction; |
1261ec42 | 287 | struct btrfs_super_block *disk_super; |
e20d96d6 CM |
288 | struct buffer_head *sb_buffer; |
289 | struct super_block *sb; | |
d98237b3 | 290 | struct inode *btree_inode; |
79154b1b | 291 | struct mutex trans_mutex; |
d561c025 | 292 | struct mutex fs_mutex; |
8fd17795 | 293 | struct list_head trans_list; |
87cbda5c CM |
294 | struct crypto_hash *hash_tfm; |
295 | spinlock_t hash_lock; | |
e66f709b | 296 | int do_barriers; |
d6e4a428 | 297 | struct kobject kobj; |
9f5fae2f CM |
298 | }; |
299 | ||
300 | /* | |
301 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 302 | * and for the extent tree extent_root root. |
9f5fae2f CM |
303 | */ |
304 | struct btrfs_root { | |
e20d96d6 CM |
305 | struct buffer_head *node; |
306 | struct buffer_head *commit_root; | |
62e2749e CM |
307 | struct btrfs_root_item root_item; |
308 | struct btrfs_key root_key; | |
9f5fae2f | 309 | struct btrfs_fs_info *fs_info; |
0f7d52f4 CM |
310 | struct inode *inode; |
311 | u64 objectid; | |
312 | u64 last_trans; | |
62e2749e | 313 | u32 blocksize; |
9f5fae2f CM |
314 | int ref_cows; |
315 | u32 type; | |
1b05da2e CM |
316 | u64 highest_inode; |
317 | u64 last_inode_alloc; | |
62e2749e CM |
318 | }; |
319 | ||
62e2749e CM |
320 | /* the lower bits in the key flags defines the item type */ |
321 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
322 | #define BTRFS_KEY_TYPE_SHIFT 24 |
323 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
324 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
325 | |
326 | /* | |
327 | * inode items have the data typically returned from stat and store other | |
328 | * info about object characteristics. There is one for every file and dir in | |
329 | * the FS | |
330 | */ | |
9078a3e1 CM |
331 | #define BTRFS_INODE_ITEM_KEY 1 |
332 | ||
333 | /* reserve 2-15 close to the inode for later flexibility */ | |
1e1d2701 CM |
334 | |
335 | /* | |
336 | * dir items are the name -> inode pointers in a directory. There is one | |
337 | * for every name in a directory. | |
338 | */ | |
9078a3e1 CM |
339 | #define BTRFS_DIR_ITEM_KEY 16 |
340 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 341 | /* |
9078a3e1 | 342 | * extent data is for file data |
1e1d2701 | 343 | */ |
9078a3e1 | 344 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
345 | /* |
346 | * csum items have the checksums for data in the extents | |
347 | */ | |
9078a3e1 CM |
348 | #define BTRFS_CSUM_ITEM_KEY 19 |
349 | ||
350 | /* reserve 20-31 for other file stuff */ | |
f254e52c | 351 | |
1e1d2701 CM |
352 | /* |
353 | * root items point to tree roots. There are typically in the root | |
354 | * tree used by the super block to find all the other trees | |
355 | */ | |
9078a3e1 | 356 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
357 | /* |
358 | * extent items are in the extent map tree. These record which blocks | |
359 | * are used, and how many references there are to each block | |
360 | */ | |
9078a3e1 CM |
361 | #define BTRFS_EXTENT_ITEM_KEY 33 |
362 | ||
363 | /* | |
364 | * block groups give us hints into the extent allocation trees. Which | |
365 | * blocks are free etc etc | |
366 | */ | |
367 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 34 | |
9f5fae2f | 368 | |
0bd93ba0 CM |
369 | /* |
370 | * dev items list the devices that make up the FS | |
371 | */ | |
9078a3e1 | 372 | #define BTRFS_DEV_ITEM_KEY 35 |
0bd93ba0 | 373 | |
1e1d2701 CM |
374 | /* |
375 | * string items are for debugging. They just store a short string of | |
376 | * data in the FS | |
377 | */ | |
9078a3e1 CM |
378 | #define BTRFS_STRING_ITEM_KEY 253 |
379 | ||
380 | ||
381 | static inline u64 btrfs_block_group_used(struct btrfs_block_group_item *bi) | |
382 | { | |
383 | return le64_to_cpu(bi->used); | |
384 | } | |
385 | ||
386 | static inline void btrfs_set_block_group_used(struct | |
387 | btrfs_block_group_item *bi, | |
388 | u64 val) | |
389 | { | |
390 | bi->used = cpu_to_le64(val); | |
391 | } | |
1e1d2701 CM |
392 | |
393 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
394 | { | |
395 | return le64_to_cpu(i->generation); | |
396 | } | |
397 | ||
398 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
399 | u64 val) | |
400 | { | |
401 | i->generation = cpu_to_le64(val); | |
402 | } | |
403 | ||
404 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
405 | { | |
406 | return le64_to_cpu(i->size); | |
407 | } | |
408 | ||
409 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
410 | { | |
411 | i->size = cpu_to_le64(val); | |
412 | } | |
413 | ||
414 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
415 | { | |
416 | return le64_to_cpu(i->nblocks); | |
417 | } | |
418 | ||
419 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
420 | { | |
421 | i->nblocks = cpu_to_le64(val); | |
422 | } | |
423 | ||
31f3c99b CM |
424 | static inline u64 btrfs_inode_block_group(struct btrfs_inode_item *i) |
425 | { | |
426 | return le64_to_cpu(i->block_group); | |
427 | } | |
428 | ||
429 | static inline void btrfs_set_inode_block_group(struct btrfs_inode_item *i, | |
430 | u64 val) | |
431 | { | |
432 | i->block_group = cpu_to_le64(val); | |
433 | } | |
434 | ||
1e1d2701 CM |
435 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) |
436 | { | |
437 | return le32_to_cpu(i->nlink); | |
438 | } | |
439 | ||
440 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
441 | { | |
442 | i->nlink = cpu_to_le32(val); | |
443 | } | |
444 | ||
445 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
446 | { | |
447 | return le32_to_cpu(i->uid); | |
448 | } | |
449 | ||
450 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
451 | { | |
452 | i->uid = cpu_to_le32(val); | |
453 | } | |
454 | ||
455 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
456 | { | |
457 | return le32_to_cpu(i->gid); | |
458 | } | |
459 | ||
460 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
461 | { | |
462 | i->gid = cpu_to_le32(val); | |
463 | } | |
464 | ||
465 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
466 | { | |
467 | return le32_to_cpu(i->mode); | |
468 | } | |
469 | ||
470 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
471 | { | |
472 | i->mode = cpu_to_le32(val); | |
473 | } | |
474 | ||
475 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
476 | { | |
477 | return le32_to_cpu(i->rdev); | |
478 | } | |
479 | ||
480 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
481 | { | |
482 | i->rdev = cpu_to_le32(val); | |
483 | } | |
484 | ||
485 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
486 | { | |
487 | return le16_to_cpu(i->flags); | |
488 | } | |
489 | ||
490 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
491 | { | |
492 | i->flags = cpu_to_le16(val); | |
493 | } | |
494 | ||
495 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
496 | { | |
497 | return le16_to_cpu(i->compat_flags); | |
498 | } | |
499 | ||
500 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
501 | u16 val) | |
502 | { | |
503 | i->compat_flags = cpu_to_le16(val); | |
504 | } | |
505 | ||
f254e52c | 506 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 507 | { |
f254e52c | 508 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
509 | } |
510 | ||
511 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 512 | u64 val) |
e20d96d6 | 513 | { |
f254e52c | 514 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
515 | } |
516 | ||
517 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
518 | { | |
519 | return le32_to_cpu(ts->nsec); | |
520 | } | |
521 | ||
522 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
523 | u32 val) | |
524 | { | |
525 | ts->nsec = cpu_to_le32(val); | |
526 | } | |
527 | ||
234b63a0 | 528 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
529 | { |
530 | return le32_to_cpu(ei->refs); | |
531 | } | |
532 | ||
234b63a0 | 533 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
534 | { |
535 | ei->refs = cpu_to_le32(val); | |
536 | } | |
537 | ||
4d775673 CM |
538 | static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei) |
539 | { | |
540 | return le64_to_cpu(ei->owner); | |
541 | } | |
542 | ||
543 | static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val) | |
544 | { | |
545 | ei->owner = cpu_to_le64(val); | |
546 | } | |
547 | ||
234b63a0 | 548 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 549 | { |
123abc88 | 550 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
551 | } |
552 | ||
4d775673 | 553 | |
234b63a0 CM |
554 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
555 | u64 val) | |
1d4f8a0c | 556 | { |
123abc88 | 557 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
558 | } |
559 | ||
123abc88 | 560 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 561 | { |
123abc88 | 562 | return le32_to_cpu(item->offset); |
0783fcfc CM |
563 | } |
564 | ||
123abc88 | 565 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 566 | { |
123abc88 | 567 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
568 | } |
569 | ||
123abc88 | 570 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 571 | { |
123abc88 | 572 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
573 | } |
574 | ||
575 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
576 | { | |
577 | return le16_to_cpu(item->size); | |
578 | } | |
579 | ||
580 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
581 | { | |
582 | item->size = cpu_to_le16(val); | |
583 | } | |
584 | ||
1d4f6404 CM |
585 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
586 | { | |
587 | return le16_to_cpu(d->flags); | |
588 | } | |
589 | ||
590 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
591 | { | |
592 | d->flags = cpu_to_le16(val); | |
593 | } | |
594 | ||
595 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
596 | { | |
597 | return d->type; | |
598 | } | |
599 | ||
600 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
601 | { | |
602 | d->type = val; | |
603 | } | |
604 | ||
a8a2ee0c CM |
605 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
606 | { | |
607 | return le16_to_cpu(d->name_len); | |
608 | } | |
609 | ||
610 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 611 | { |
a8a2ee0c | 612 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
613 | } |
614 | ||
e2fa7227 CM |
615 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
616 | struct btrfs_disk_key *disk) | |
617 | { | |
618 | cpu->offset = le64_to_cpu(disk->offset); | |
619 | cpu->flags = le32_to_cpu(disk->flags); | |
620 | cpu->objectid = le64_to_cpu(disk->objectid); | |
621 | } | |
622 | ||
623 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
624 | struct btrfs_key *cpu) | |
625 | { | |
626 | disk->offset = cpu_to_le64(cpu->offset); | |
627 | disk->flags = cpu_to_le32(cpu->flags); | |
628 | disk->objectid = cpu_to_le64(cpu->objectid); | |
629 | } | |
630 | ||
62e2749e | 631 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
632 | { |
633 | return le64_to_cpu(disk->objectid); | |
634 | } | |
635 | ||
62e2749e CM |
636 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
637 | u64 val) | |
e2fa7227 CM |
638 | { |
639 | disk->objectid = cpu_to_le64(val); | |
640 | } | |
641 | ||
62e2749e | 642 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
643 | { |
644 | return le64_to_cpu(disk->offset); | |
645 | } | |
646 | ||
62e2749e CM |
647 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
648 | u64 val) | |
e2fa7227 CM |
649 | { |
650 | disk->offset = cpu_to_le64(val); | |
651 | } | |
652 | ||
62e2749e | 653 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
654 | { |
655 | return le32_to_cpu(disk->flags); | |
656 | } | |
657 | ||
62e2749e CM |
658 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
659 | u32 val) | |
e2fa7227 CM |
660 | { |
661 | disk->flags = cpu_to_le32(val); | |
662 | } | |
663 | ||
a429e513 | 664 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 665 | { |
a429e513 | 666 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
667 | } |
668 | ||
a429e513 CM |
669 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
670 | u32 val) | |
7fcde0e3 | 671 | { |
a429e513 CM |
672 | u32 flags = btrfs_disk_key_flags(key); |
673 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
674 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
675 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
676 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
677 | } |
678 | ||
62e2749e CM |
679 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
680 | { | |
a429e513 | 681 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
682 | } |
683 | ||
a429e513 | 684 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 685 | { |
a429e513 CM |
686 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
687 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
688 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
689 | } |
690 | ||
bb492bb0 | 691 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 692 | { |
bb492bb0 | 693 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
694 | } |
695 | ||
bb492bb0 | 696 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 697 | { |
bb492bb0 | 698 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
699 | } |
700 | ||
7f5c1516 CM |
701 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
702 | { | |
703 | return le64_to_cpu(h->generation); | |
704 | } | |
705 | ||
706 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
707 | u64 val) | |
708 | { | |
709 | h->generation = cpu_to_le64(val); | |
710 | } | |
711 | ||
4d775673 CM |
712 | static inline u64 btrfs_header_owner(struct btrfs_header *h) |
713 | { | |
714 | return le64_to_cpu(h->owner); | |
715 | } | |
716 | ||
717 | static inline void btrfs_set_header_owner(struct btrfs_header *h, | |
718 | u64 val) | |
719 | { | |
720 | h->owner = cpu_to_le64(val); | |
721 | } | |
722 | ||
bb492bb0 | 723 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 724 | { |
bb492bb0 | 725 | return le16_to_cpu(h->nritems); |
7518a238 CM |
726 | } |
727 | ||
bb492bb0 | 728 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 729 | { |
bb492bb0 | 730 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
731 | } |
732 | ||
bb492bb0 | 733 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 734 | { |
bb492bb0 | 735 | return le16_to_cpu(h->flags); |
7518a238 CM |
736 | } |
737 | ||
bb492bb0 | 738 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 739 | { |
bb492bb0 | 740 | h->flags = cpu_to_le16(val); |
7518a238 CM |
741 | } |
742 | ||
bb492bb0 | 743 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 744 | { |
9a6f11ed | 745 | return h->level; |
7518a238 CM |
746 | } |
747 | ||
bb492bb0 | 748 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 749 | { |
234b63a0 | 750 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 751 | h->level = level; |
7518a238 CM |
752 | } |
753 | ||
234b63a0 | 754 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
755 | { |
756 | return (btrfs_header_level(&n->header) == 0); | |
757 | } | |
758 | ||
3768f368 CM |
759 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
760 | { | |
761 | return le64_to_cpu(item->blocknr); | |
762 | } | |
763 | ||
764 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
765 | { | |
766 | item->blocknr = cpu_to_le64(val); | |
767 | } | |
768 | ||
d6e4a428 CM |
769 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
770 | { | |
771 | return le64_to_cpu(item->root_dirid); | |
772 | } | |
773 | ||
774 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
775 | { | |
776 | item->root_dirid = cpu_to_le64(val); | |
777 | } | |
778 | ||
3768f368 CM |
779 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
780 | { | |
781 | return le32_to_cpu(item->refs); | |
782 | } | |
783 | ||
784 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
785 | { | |
786 | item->refs = cpu_to_le32(val); | |
787 | } | |
788 | ||
789 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) | |
790 | { | |
791 | return le64_to_cpu(s->blocknr); | |
792 | } | |
793 | ||
794 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
795 | { | |
796 | s->blocknr = cpu_to_le64(val); | |
797 | } | |
798 | ||
0f7d52f4 CM |
799 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
800 | { | |
801 | return le64_to_cpu(s->generation); | |
802 | } | |
803 | ||
804 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
805 | u64 val) | |
806 | { | |
807 | s->generation = cpu_to_le64(val); | |
808 | } | |
809 | ||
3768f368 CM |
810 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
811 | { | |
812 | return le64_to_cpu(s->root); | |
813 | } | |
814 | ||
815 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
816 | { | |
817 | s->root = cpu_to_le64(val); | |
818 | } | |
819 | ||
820 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
821 | { | |
822 | return le64_to_cpu(s->total_blocks); | |
823 | } | |
824 | ||
825 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
826 | u64 val) | |
827 | { | |
828 | s->total_blocks = cpu_to_le64(val); | |
829 | } | |
830 | ||
831 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
832 | { | |
833 | return le64_to_cpu(s->blocks_used); | |
834 | } | |
835 | ||
836 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
837 | u64 val) | |
838 | { | |
839 | s->blocks_used = cpu_to_le64(val); | |
840 | } | |
841 | ||
123abc88 | 842 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 843 | { |
123abc88 | 844 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
845 | } |
846 | ||
847 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
848 | u32 val) |
849 | { | |
850 | s->blocksize = cpu_to_le32(val); | |
851 | } | |
852 | ||
2e635a27 CM |
853 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
854 | { | |
855 | return le64_to_cpu(s->root_dir_objectid); | |
856 | } | |
857 | ||
858 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
859 | val) | |
860 | { | |
861 | s->root_dir_objectid = cpu_to_le64(val); | |
862 | } | |
863 | ||
b4100d64 CM |
864 | static inline u64 btrfs_super_last_device_id(struct btrfs_super_block *s) |
865 | { | |
866 | return le64_to_cpu(s->last_device_id); | |
867 | } | |
868 | ||
869 | static inline void btrfs_set_super_last_device_id(struct btrfs_super_block *s, | |
870 | u64 val) | |
871 | { | |
872 | s->last_device_id = cpu_to_le64(val); | |
873 | } | |
874 | ||
875 | static inline u64 btrfs_super_device_id(struct btrfs_super_block *s) | |
876 | { | |
877 | return le64_to_cpu(s->device_id); | |
878 | } | |
879 | ||
880 | static inline void btrfs_set_super_device_id(struct btrfs_super_block *s, | |
881 | u64 val) | |
882 | { | |
883 | s->device_id = cpu_to_le64(val); | |
884 | } | |
885 | ||
0bd93ba0 CM |
886 | static inline u64 btrfs_super_device_block_start(struct btrfs_super_block *s) |
887 | { | |
888 | return le64_to_cpu(s->device_block_start); | |
889 | } | |
890 | ||
891 | static inline void btrfs_set_super_device_block_start(struct btrfs_super_block | |
892 | *s, u64 val) | |
893 | { | |
894 | s->device_block_start = cpu_to_le64(val); | |
895 | } | |
896 | ||
897 | static inline u64 btrfs_super_device_num_blocks(struct btrfs_super_block *s) | |
898 | { | |
899 | return le64_to_cpu(s->device_num_blocks); | |
900 | } | |
901 | ||
902 | static inline void btrfs_set_super_device_num_blocks(struct btrfs_super_block | |
903 | *s, u64 val) | |
904 | { | |
905 | s->device_num_blocks = cpu_to_le64(val); | |
906 | } | |
907 | ||
908 | static inline u64 btrfs_super_device_root(struct btrfs_super_block *s) | |
909 | { | |
910 | return le64_to_cpu(s->device_root); | |
911 | } | |
912 | ||
913 | static inline void btrfs_set_super_device_root(struct btrfs_super_block | |
914 | *s, u64 val) | |
915 | { | |
916 | s->device_root = cpu_to_le64(val); | |
917 | } | |
918 | ||
919 | ||
123abc88 | 920 | static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) |
3768f368 | 921 | { |
123abc88 | 922 | return (u8 *)l->items; |
3768f368 | 923 | } |
9f5fae2f | 924 | |
236454df CM |
925 | static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e) |
926 | { | |
927 | return e->type; | |
928 | } | |
929 | static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e, | |
930 | u8 val) | |
931 | { | |
932 | e->type = val; | |
933 | } | |
934 | ||
935 | static inline char *btrfs_file_extent_inline_start(struct | |
936 | btrfs_file_extent_item *e) | |
937 | { | |
938 | return (char *)(&e->disk_blocknr); | |
939 | } | |
940 | ||
941 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
942 | { | |
943 | return (unsigned long)(&((struct | |
944 | btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize; | |
945 | } | |
946 | ||
947 | static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e) | |
948 | { | |
949 | struct btrfs_file_extent_item *fe = NULL; | |
950 | return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr); | |
951 | } | |
952 | ||
9f5fae2f CM |
953 | static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item |
954 | *e) | |
955 | { | |
956 | return le64_to_cpu(e->disk_blocknr); | |
957 | } | |
958 | ||
959 | static inline void btrfs_set_file_extent_disk_blocknr(struct | |
960 | btrfs_file_extent_item | |
961 | *e, u64 val) | |
962 | { | |
963 | e->disk_blocknr = cpu_to_le64(val); | |
964 | } | |
965 | ||
71951f35 CM |
966 | static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e) |
967 | { | |
968 | return le64_to_cpu(e->generation); | |
969 | } | |
970 | ||
971 | static inline void btrfs_set_file_extent_generation(struct | |
972 | btrfs_file_extent_item *e, | |
973 | u64 val) | |
974 | { | |
975 | e->generation = cpu_to_le64(val); | |
976 | } | |
977 | ||
9f5fae2f CM |
978 | static inline u64 btrfs_file_extent_disk_num_blocks(struct |
979 | btrfs_file_extent_item *e) | |
980 | { | |
981 | return le64_to_cpu(e->disk_num_blocks); | |
982 | } | |
983 | ||
984 | static inline void btrfs_set_file_extent_disk_num_blocks(struct | |
985 | btrfs_file_extent_item | |
986 | *e, u64 val) | |
987 | { | |
988 | e->disk_num_blocks = cpu_to_le64(val); | |
989 | } | |
990 | ||
991 | static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e) | |
992 | { | |
993 | return le64_to_cpu(e->offset); | |
994 | } | |
995 | ||
996 | static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item | |
997 | *e, u64 val) | |
998 | { | |
999 | e->offset = cpu_to_le64(val); | |
1000 | } | |
1001 | ||
1002 | static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item | |
1003 | *e) | |
1004 | { | |
1005 | return le64_to_cpu(e->num_blocks); | |
1006 | } | |
1007 | ||
1008 | static inline void btrfs_set_file_extent_num_blocks(struct | |
1009 | btrfs_file_extent_item *e, | |
1010 | u64 val) | |
1011 | { | |
1012 | e->num_blocks = cpu_to_le64(val); | |
1013 | } | |
1014 | ||
0bd93ba0 CM |
1015 | static inline u16 btrfs_device_pathlen(struct btrfs_device_item *d) |
1016 | { | |
1017 | return le16_to_cpu(d->pathlen); | |
1018 | } | |
1019 | ||
1020 | static inline void btrfs_set_device_pathlen(struct btrfs_device_item *d, | |
1021 | u16 val) | |
1022 | { | |
1023 | d->pathlen = cpu_to_le16(val); | |
1024 | } | |
1025 | ||
b4100d64 CM |
1026 | static inline u64 btrfs_device_id(struct btrfs_device_item *d) |
1027 | { | |
1028 | return le64_to_cpu(d->device_id); | |
1029 | } | |
1030 | ||
1031 | static inline void btrfs_set_device_id(struct btrfs_device_item *d, | |
1032 | u64 val) | |
1033 | { | |
1034 | d->device_id = cpu_to_le64(val); | |
1035 | } | |
1036 | ||
e20d96d6 CM |
1037 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1038 | { | |
1039 | return sb->s_fs_info; | |
1040 | } | |
1041 | ||
d6025579 CM |
1042 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
1043 | void *vcontainer, size_t container_len) | |
1044 | { | |
1045 | char *ptr = vptr; | |
1046 | char *container = vcontainer; | |
1047 | WARN_ON(ptr < container); | |
1048 | WARN_ON(ptr + len > container + container_len); | |
1049 | } | |
1050 | ||
1051 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
1052 | void *dst_block, | |
1053 | void *dst, const void *src, size_t nr) | |
1054 | { | |
1055 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1056 | memcpy(dst, src, nr); | |
1057 | } | |
1058 | ||
1059 | static inline void btrfs_memmove(struct btrfs_root *root, | |
1060 | void *dst_block, | |
1061 | void *dst, void *src, size_t nr) | |
1062 | { | |
1063 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1064 | memmove(dst, src, nr); | |
1065 | } | |
1066 | ||
1067 | static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) | |
1068 | { | |
1069 | WARN_ON(!atomic_read(&bh->b_count)); | |
1070 | mark_buffer_dirty(bh); | |
1071 | } | |
1072 | ||
4beb1b8b CM |
1073 | /* helper function to cast into the data area of the leaf. */ |
1074 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
1075 | ((type *)(btrfs_leaf_data(leaf) + \ |
1076 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 1077 | |
b18c6685 | 1078 | /* extent-tree.c */ |
31f3c99b CM |
1079 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1080 | struct btrfs_block_group_cache | |
be744175 CM |
1081 | *hint, u64 search_start, |
1082 | int data); | |
c5739bba CM |
1083 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
1084 | struct btrfs_root *root); | |
e20d96d6 | 1085 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
31f3c99b | 1086 | struct btrfs_root *root, u64 hint); |
4d775673 CM |
1087 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
1088 | struct btrfs_root *root, u64 owner, | |
c62a1920 | 1089 | u64 num_blocks, u64 search_start, |
be08c1b9 | 1090 | u64 search_end, struct btrfs_key *ins, int data); |
e089f05c | 1091 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1092 | struct buffer_head *buf); |
e089f05c CM |
1093 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1094 | *root, u64 blocknr, u64 num_blocks, int pin); | |
dee26a9f CM |
1095 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct |
1096 | btrfs_root *root); | |
b18c6685 CM |
1097 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1098 | struct btrfs_root *root, | |
1099 | u64 blocknr, u64 num_blocks); | |
9078a3e1 CM |
1100 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1101 | struct btrfs_root *root); | |
1102 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1103 | int btrfs_read_block_groups(struct btrfs_root *root); | |
dee26a9f | 1104 | /* ctree.c */ |
6567e837 CM |
1105 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1106 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1107 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1108 | struct btrfs_root *root, | |
1109 | struct btrfs_path *path, | |
1110 | u32 new_size); | |
e089f05c CM |
1111 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1112 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1113 | ins_len, int cow); | |
234b63a0 | 1114 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1115 | struct btrfs_path *btrfs_alloc_path(void); |
1116 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1117 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1118 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1119 | struct btrfs_path *path); | |
1120 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1121 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1122 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1123 | *root, struct btrfs_path *path, struct btrfs_key | |
1124 | *cpu_key, u32 data_size); | |
234b63a0 | 1125 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1126 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1127 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
e20d96d6 | 1128 | *root, struct buffer_head *snap); |
dee26a9f | 1129 | /* root-item.c */ |
e089f05c CM |
1130 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1131 | struct btrfs_key *key); | |
1132 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1133 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1134 | *item); | |
1135 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1136 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1137 | *item); | |
1138 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1139 | btrfs_root_item *item, struct btrfs_key *key); | |
dee26a9f | 1140 | /* dir-item.c */ |
e089f05c | 1141 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1142 | *root, const char *name, int name_len, u64 dir, |
1143 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1144 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1145 | struct btrfs_root *root, | |
1146 | struct btrfs_path *path, u64 dir, | |
1147 | const char *name, int name_len, | |
1148 | int mod); | |
1149 | struct btrfs_dir_item * | |
1150 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1151 | struct btrfs_root *root, | |
1152 | struct btrfs_path *path, u64 dir, | |
1153 | u64 objectid, const char *name, int name_len, | |
1154 | int mod); | |
1155 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1156 | struct btrfs_path *path, | |
7f5c1516 | 1157 | const char *name, int name_len); |
7e38180e CM |
1158 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1159 | struct btrfs_root *root, | |
1160 | struct btrfs_path *path, | |
1161 | struct btrfs_dir_item *di); | |
dee26a9f | 1162 | /* inode-map.c */ |
9f5fae2f CM |
1163 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1164 | struct btrfs_root *fs_root, | |
1165 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1166 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1167 | ||
dee26a9f | 1168 | /* inode-item.c */ |
293ffd5f CM |
1169 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1170 | *root, u64 objectid, struct btrfs_inode_item | |
1171 | *inode_item); | |
1172 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1173 | *root, struct btrfs_path *path, |
1174 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1175 | |
1176 | /* file-item.c */ | |
b18c6685 | 1177 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1178 | struct btrfs_root *root, |
b18c6685 CM |
1179 | u64 objectid, u64 pos, u64 offset, |
1180 | u64 num_blocks); | |
dee26a9f CM |
1181 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1182 | struct btrfs_root *root, | |
1183 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1184 | u64 blocknr, int mod); |
f254e52c CM |
1185 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1186 | struct btrfs_root *root, | |
1187 | u64 objectid, u64 offset, | |
1188 | char *data, size_t len); | |
1189 | int btrfs_csum_verify_file_block(struct btrfs_root *root, | |
1190 | u64 objectid, u64 offset, | |
1191 | char *data, size_t len); | |
b18c6685 CM |
1192 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1193 | struct btrfs_root *root, | |
1194 | struct btrfs_path *path, | |
1195 | u64 objectid, u64 offset, | |
1196 | int cow); | |
d6e4a428 CM |
1197 | /* super.c */ |
1198 | extern struct subsystem btrfs_subsys; | |
1199 | ||
eb60ceac | 1200 | #endif |