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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; |
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 | |
509659cd CM |
33 | /* four bytes for CRC32 */ |
34 | #define BTRFS_CRC32_SIZE 4 | |
e06afa83 | 35 | #define BTRFS_EMPTY_DIR_SIZE 6 |
f254e52c | 36 | |
fec577fb CM |
37 | /* |
38 | * the key defines the order in the tree, and so it also defines (optimal) | |
39 | * block layout. objectid corresonds to the inode number. The flags | |
40 | * tells us things about the object, and is a kind of stream selector. | |
41 | * so for a given inode, keys with flags of 1 might refer to the inode | |
42 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
43 | * may point to extents. | |
44 | * | |
45 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
46 | * |
47 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
48 | * in cpu native order. Otherwise they are identical and their sizes | |
49 | * should be the same (ie both packed) | |
fec577fb | 50 | */ |
e2fa7227 CM |
51 | struct btrfs_disk_key { |
52 | __le64 objectid; | |
f254e52c | 53 | __le32 flags; |
70b2befd | 54 | __le64 offset; |
e2fa7227 CM |
55 | } __attribute__ ((__packed__)); |
56 | ||
57 | struct btrfs_key { | |
eb60ceac | 58 | u64 objectid; |
f254e52c | 59 | u32 flags; |
70b2befd | 60 | u64 offset; |
eb60ceac CM |
61 | } __attribute__ ((__packed__)); |
62 | ||
fec577fb CM |
63 | /* |
64 | * every tree block (leaf or node) starts with this header. | |
65 | */ | |
bb492bb0 | 66 | struct btrfs_header { |
f254e52c | 67 | u8 csum[BTRFS_CSUM_SIZE]; |
3768f368 | 68 | u8 fsid[16]; /* FS specific uuid */ |
bb492bb0 | 69 | __le64 blocknr; /* which block this node is supposed to live in */ |
7f5c1516 | 70 | __le64 generation; |
4d775673 | 71 | __le64 owner; |
bb492bb0 CM |
72 | __le16 nritems; |
73 | __le16 flags; | |
9a6f11ed | 74 | u8 level; |
eb60ceac CM |
75 | } __attribute__ ((__packed__)); |
76 | ||
234b63a0 | 77 | #define BTRFS_MAX_LEVEL 8 |
123abc88 CM |
78 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \ |
79 | sizeof(struct btrfs_header)) / \ | |
80 | (sizeof(struct btrfs_disk_key) + sizeof(u64))) | |
81 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) | |
82 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize)) | |
236454df CM |
83 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
84 | sizeof(struct btrfs_item) - \ | |
85 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 86 | |
e20d96d6 | 87 | struct buffer_head; |
fec577fb CM |
88 | /* |
89 | * the super block basically lists the main trees of the FS | |
90 | * it currently lacks any block count etc etc | |
91 | */ | |
234b63a0 | 92 | struct btrfs_super_block { |
f254e52c | 93 | u8 csum[BTRFS_CSUM_SIZE]; |
87cbda5c | 94 | /* the first 3 fields must match struct btrfs_header */ |
3768f368 CM |
95 | u8 fsid[16]; /* FS specific uuid */ |
96 | __le64 blocknr; /* this block number */ | |
3768f368 | 97 | __le64 magic; |
123abc88 | 98 | __le32 blocksize; |
3768f368 CM |
99 | __le64 generation; |
100 | __le64 root; | |
101 | __le64 total_blocks; | |
102 | __le64 blocks_used; | |
2e635a27 | 103 | __le64 root_dir_objectid; |
b4100d64 | 104 | __le64 last_device_id; |
0bd93ba0 CM |
105 | /* fields below here vary with the underlying disk */ |
106 | __le64 device_block_start; | |
107 | __le64 device_num_blocks; | |
108 | __le64 device_root; | |
b4100d64 | 109 | __le64 device_id; |
cfaa7295 CM |
110 | } __attribute__ ((__packed__)); |
111 | ||
fec577fb | 112 | /* |
62e2749e | 113 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
114 | * the item in the leaf (relative to the start of the data area) |
115 | */ | |
0783fcfc | 116 | struct btrfs_item { |
e2fa7227 | 117 | struct btrfs_disk_key key; |
123abc88 | 118 | __le32 offset; |
0783fcfc | 119 | __le16 size; |
eb60ceac CM |
120 | } __attribute__ ((__packed__)); |
121 | ||
fec577fb CM |
122 | /* |
123 | * leaves have an item area and a data area: | |
124 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
125 | * | |
126 | * The data is separate from the items to get the keys closer together | |
127 | * during searches. | |
128 | */ | |
234b63a0 | 129 | struct btrfs_leaf { |
bb492bb0 | 130 | struct btrfs_header header; |
123abc88 | 131 | struct btrfs_item items[]; |
eb60ceac CM |
132 | } __attribute__ ((__packed__)); |
133 | ||
fec577fb CM |
134 | /* |
135 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
136 | * other blocks | |
137 | */ | |
123abc88 CM |
138 | struct btrfs_key_ptr { |
139 | struct btrfs_disk_key key; | |
140 | __le64 blockptr; | |
141 | } __attribute__ ((__packed__)); | |
142 | ||
234b63a0 | 143 | struct btrfs_node { |
bb492bb0 | 144 | struct btrfs_header header; |
123abc88 | 145 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
146 | } __attribute__ ((__packed__)); |
147 | ||
fec577fb | 148 | /* |
234b63a0 CM |
149 | * btrfs_paths remember the path taken from the root down to the leaf. |
150 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
151 | * to any other levels that are present. |
152 | * | |
153 | * The slots array records the index of the item or block pointer | |
154 | * used while walking the tree. | |
155 | */ | |
234b63a0 | 156 | struct btrfs_path { |
e20d96d6 | 157 | struct buffer_head *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 158 | int slots[BTRFS_MAX_LEVEL]; |
eb60ceac | 159 | }; |
5de08d7d | 160 | |
62e2749e CM |
161 | /* |
162 | * items in the extent btree are used to record the objectid of the | |
163 | * owner of the block and the number of references | |
164 | */ | |
165 | struct btrfs_extent_item { | |
166 | __le32 refs; | |
4d775673 | 167 | __le64 owner; |
62e2749e CM |
168 | } __attribute__ ((__packed__)); |
169 | ||
1e1d2701 | 170 | struct btrfs_inode_timespec { |
f254e52c | 171 | __le64 sec; |
1e1d2701 CM |
172 | __le32 nsec; |
173 | } __attribute__ ((__packed__)); | |
174 | ||
175 | /* | |
176 | * there is no padding here on purpose. If you want to extent the inode, | |
177 | * make a new item type | |
178 | */ | |
179 | struct btrfs_inode_item { | |
180 | __le64 generation; | |
181 | __le64 size; | |
182 | __le64 nblocks; | |
31f3c99b | 183 | __le64 block_group; |
1e1d2701 CM |
184 | __le32 nlink; |
185 | __le32 uid; | |
186 | __le32 gid; | |
187 | __le32 mode; | |
188 | __le32 rdev; | |
189 | __le16 flags; | |
190 | __le16 compat_flags; | |
191 | struct btrfs_inode_timespec atime; | |
192 | struct btrfs_inode_timespec ctime; | |
193 | struct btrfs_inode_timespec mtime; | |
194 | struct btrfs_inode_timespec otime; | |
195 | } __attribute__ ((__packed__)); | |
196 | ||
62e2749e | 197 | struct btrfs_dir_item { |
d6e4a428 | 198 | struct btrfs_disk_key location; |
62e2749e | 199 | __le16 flags; |
a8a2ee0c | 200 | __le16 name_len; |
62e2749e CM |
201 | u8 type; |
202 | } __attribute__ ((__packed__)); | |
203 | ||
204 | struct btrfs_root_item { | |
d6e4a428 CM |
205 | struct btrfs_inode_item inode; |
206 | __le64 root_dirid; | |
62e2749e CM |
207 | __le64 blocknr; |
208 | __le32 flags; | |
209 | __le64 block_limit; | |
210 | __le64 blocks_used; | |
211 | __le32 refs; | |
9f5fae2f | 212 | } __attribute__ ((__packed__)); |
62e2749e | 213 | |
236454df CM |
214 | #define BTRFS_FILE_EXTENT_REG 0 |
215 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
216 | ||
9f5fae2f | 217 | struct btrfs_file_extent_item { |
71951f35 | 218 | __le64 generation; |
236454df | 219 | u8 type; |
9f5fae2f CM |
220 | /* |
221 | * disk space consumed by the extent, checksum blocks are included | |
222 | * in these numbers | |
223 | */ | |
224 | __le64 disk_blocknr; | |
225 | __le64 disk_num_blocks; | |
226 | /* | |
dee26a9f | 227 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
228 | * this extent record is for. This allows a file extent to point |
229 | * into the middle of an existing extent on disk, sharing it | |
230 | * between two snapshots (useful if some bytes in the middle of the | |
231 | * extent have changed | |
232 | */ | |
233 | __le64 offset; | |
234 | /* | |
235 | * the logical number of file blocks (no csums included) | |
236 | */ | |
237 | __le64 num_blocks; | |
238 | } __attribute__ ((__packed__)); | |
239 | ||
f254e52c | 240 | struct btrfs_csum_item { |
509659cd | 241 | u8 csum; |
f254e52c CM |
242 | } __attribute__ ((__packed__)); |
243 | ||
0bd93ba0 CM |
244 | struct btrfs_device_item { |
245 | __le16 pathlen; | |
b4100d64 | 246 | __le64 device_id; |
0bd93ba0 CM |
247 | } __attribute__ ((__packed__)); |
248 | ||
9078a3e1 CM |
249 | /* tag for the radix tree of block groups in ram */ |
250 | #define BTRFS_BLOCK_GROUP_DIRTY 0 | |
31f3c99b | 251 | #define BTRFS_BLOCK_GROUP_AVAIL 1 |
9078a3e1 | 252 | #define BTRFS_BLOCK_GROUP_SIZE (256 * 1024 * 1024) |
1e2677e0 CM |
253 | |
254 | ||
255 | #define BTRFS_BLOCK_GROUP_DATA 1 | |
9078a3e1 CM |
256 | struct btrfs_block_group_item { |
257 | __le64 used; | |
1e2677e0 | 258 | u8 flags; |
9078a3e1 CM |
259 | } __attribute__ ((__packed__)); |
260 | ||
261 | struct btrfs_block_group_cache { | |
262 | struct btrfs_key key; | |
263 | struct btrfs_block_group_item item; | |
3e1ad54f | 264 | struct radix_tree_root *radix; |
cd1bc465 CM |
265 | u64 first_free; |
266 | u64 last_alloc; | |
be744175 | 267 | u64 pinned; |
e37c9e69 | 268 | u64 last_prealloc; |
be744175 | 269 | int data; |
e37c9e69 | 270 | int cached; |
9078a3e1 CM |
271 | }; |
272 | ||
87cbda5c | 273 | struct crypto_hash; |
9f5fae2f | 274 | struct btrfs_fs_info { |
62e2749e CM |
275 | struct btrfs_root *extent_root; |
276 | struct btrfs_root *tree_root; | |
0bd93ba0 | 277 | struct btrfs_root *dev_root; |
0f7d52f4 | 278 | struct radix_tree_root fs_roots_radix; |
8ef97622 | 279 | struct radix_tree_root pending_del_radix; |
62e2749e | 280 | struct radix_tree_root pinned_radix; |
7eccb903 | 281 | struct radix_tree_root dev_radix; |
9078a3e1 | 282 | struct radix_tree_root block_group_radix; |
be744175 | 283 | struct radix_tree_root block_group_data_radix; |
e37c9e69 | 284 | struct radix_tree_root extent_map_radix; |
f2458e1d CM |
285 | |
286 | u64 extent_tree_insert[BTRFS_MAX_LEVEL * 3]; | |
287 | int extent_tree_insert_nr; | |
288 | u64 extent_tree_prealloc[BTRFS_MAX_LEVEL * 3]; | |
289 | int extent_tree_prealloc_nr; | |
290 | ||
293ffd5f | 291 | u64 generation; |
79154b1b | 292 | struct btrfs_transaction *running_transaction; |
1261ec42 | 293 | struct btrfs_super_block *disk_super; |
e20d96d6 CM |
294 | struct buffer_head *sb_buffer; |
295 | struct super_block *sb; | |
d98237b3 | 296 | struct inode *btree_inode; |
79154b1b | 297 | struct mutex trans_mutex; |
d561c025 | 298 | struct mutex fs_mutex; |
8fd17795 | 299 | struct list_head trans_list; |
87cbda5c CM |
300 | struct crypto_hash *hash_tfm; |
301 | spinlock_t hash_lock; | |
e66f709b | 302 | int do_barriers; |
d6e4a428 | 303 | struct kobject kobj; |
9f5fae2f CM |
304 | }; |
305 | ||
306 | /* | |
307 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 308 | * and for the extent tree extent_root root. |
9f5fae2f CM |
309 | */ |
310 | struct btrfs_root { | |
e20d96d6 CM |
311 | struct buffer_head *node; |
312 | struct buffer_head *commit_root; | |
62e2749e CM |
313 | struct btrfs_root_item root_item; |
314 | struct btrfs_key root_key; | |
9f5fae2f | 315 | struct btrfs_fs_info *fs_info; |
0f7d52f4 CM |
316 | struct inode *inode; |
317 | u64 objectid; | |
318 | u64 last_trans; | |
62e2749e | 319 | u32 blocksize; |
9f5fae2f CM |
320 | int ref_cows; |
321 | u32 type; | |
1b05da2e CM |
322 | u64 highest_inode; |
323 | u64 last_inode_alloc; | |
62e2749e CM |
324 | }; |
325 | ||
62e2749e CM |
326 | /* the lower bits in the key flags defines the item type */ |
327 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
328 | #define BTRFS_KEY_TYPE_SHIFT 24 |
329 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
330 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
331 | |
332 | /* | |
333 | * inode items have the data typically returned from stat and store other | |
334 | * info about object characteristics. There is one for every file and dir in | |
335 | * the FS | |
336 | */ | |
9078a3e1 CM |
337 | #define BTRFS_INODE_ITEM_KEY 1 |
338 | ||
339 | /* reserve 2-15 close to the inode for later flexibility */ | |
1e1d2701 CM |
340 | |
341 | /* | |
342 | * dir items are the name -> inode pointers in a directory. There is one | |
343 | * for every name in a directory. | |
344 | */ | |
9078a3e1 CM |
345 | #define BTRFS_DIR_ITEM_KEY 16 |
346 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 347 | /* |
9078a3e1 | 348 | * extent data is for file data |
1e1d2701 | 349 | */ |
9078a3e1 | 350 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
351 | /* |
352 | * csum items have the checksums for data in the extents | |
353 | */ | |
9078a3e1 CM |
354 | #define BTRFS_CSUM_ITEM_KEY 19 |
355 | ||
356 | /* reserve 20-31 for other file stuff */ | |
f254e52c | 357 | |
1e1d2701 CM |
358 | /* |
359 | * root items point to tree roots. There are typically in the root | |
360 | * tree used by the super block to find all the other trees | |
361 | */ | |
9078a3e1 | 362 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
363 | /* |
364 | * extent items are in the extent map tree. These record which blocks | |
365 | * are used, and how many references there are to each block | |
366 | */ | |
9078a3e1 CM |
367 | #define BTRFS_EXTENT_ITEM_KEY 33 |
368 | ||
369 | /* | |
370 | * block groups give us hints into the extent allocation trees. Which | |
371 | * blocks are free etc etc | |
372 | */ | |
373 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 34 | |
9f5fae2f | 374 | |
0bd93ba0 CM |
375 | /* |
376 | * dev items list the devices that make up the FS | |
377 | */ | |
9078a3e1 | 378 | #define BTRFS_DEV_ITEM_KEY 35 |
0bd93ba0 | 379 | |
1e1d2701 CM |
380 | /* |
381 | * string items are for debugging. They just store a short string of | |
382 | * data in the FS | |
383 | */ | |
9078a3e1 CM |
384 | #define BTRFS_STRING_ITEM_KEY 253 |
385 | ||
386 | ||
387 | static inline u64 btrfs_block_group_used(struct btrfs_block_group_item *bi) | |
388 | { | |
389 | return le64_to_cpu(bi->used); | |
390 | } | |
391 | ||
392 | static inline void btrfs_set_block_group_used(struct | |
393 | btrfs_block_group_item *bi, | |
394 | u64 val) | |
395 | { | |
396 | bi->used = cpu_to_le64(val); | |
397 | } | |
1e1d2701 CM |
398 | |
399 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
400 | { | |
401 | return le64_to_cpu(i->generation); | |
402 | } | |
403 | ||
404 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
405 | u64 val) | |
406 | { | |
407 | i->generation = cpu_to_le64(val); | |
408 | } | |
409 | ||
410 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
411 | { | |
412 | return le64_to_cpu(i->size); | |
413 | } | |
414 | ||
415 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
416 | { | |
417 | i->size = cpu_to_le64(val); | |
418 | } | |
419 | ||
420 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
421 | { | |
422 | return le64_to_cpu(i->nblocks); | |
423 | } | |
424 | ||
425 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
426 | { | |
427 | i->nblocks = cpu_to_le64(val); | |
428 | } | |
429 | ||
31f3c99b CM |
430 | static inline u64 btrfs_inode_block_group(struct btrfs_inode_item *i) |
431 | { | |
432 | return le64_to_cpu(i->block_group); | |
433 | } | |
434 | ||
435 | static inline void btrfs_set_inode_block_group(struct btrfs_inode_item *i, | |
436 | u64 val) | |
437 | { | |
438 | i->block_group = cpu_to_le64(val); | |
439 | } | |
440 | ||
1e1d2701 CM |
441 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) |
442 | { | |
443 | return le32_to_cpu(i->nlink); | |
444 | } | |
445 | ||
446 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
447 | { | |
448 | i->nlink = cpu_to_le32(val); | |
449 | } | |
450 | ||
451 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
452 | { | |
453 | return le32_to_cpu(i->uid); | |
454 | } | |
455 | ||
456 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
457 | { | |
458 | i->uid = cpu_to_le32(val); | |
459 | } | |
460 | ||
461 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
462 | { | |
463 | return le32_to_cpu(i->gid); | |
464 | } | |
465 | ||
466 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
467 | { | |
468 | i->gid = cpu_to_le32(val); | |
469 | } | |
470 | ||
471 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
472 | { | |
473 | return le32_to_cpu(i->mode); | |
474 | } | |
475 | ||
476 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
477 | { | |
478 | i->mode = cpu_to_le32(val); | |
479 | } | |
480 | ||
481 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
482 | { | |
483 | return le32_to_cpu(i->rdev); | |
484 | } | |
485 | ||
486 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
487 | { | |
488 | i->rdev = cpu_to_le32(val); | |
489 | } | |
490 | ||
491 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
492 | { | |
493 | return le16_to_cpu(i->flags); | |
494 | } | |
495 | ||
496 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
497 | { | |
498 | i->flags = cpu_to_le16(val); | |
499 | } | |
500 | ||
501 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
502 | { | |
503 | return le16_to_cpu(i->compat_flags); | |
504 | } | |
505 | ||
506 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
507 | u16 val) | |
508 | { | |
509 | i->compat_flags = cpu_to_le16(val); | |
510 | } | |
511 | ||
f254e52c | 512 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 513 | { |
f254e52c | 514 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
515 | } |
516 | ||
517 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 518 | u64 val) |
e20d96d6 | 519 | { |
f254e52c | 520 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
521 | } |
522 | ||
523 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
524 | { | |
525 | return le32_to_cpu(ts->nsec); | |
526 | } | |
527 | ||
528 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
529 | u32 val) | |
530 | { | |
531 | ts->nsec = cpu_to_le32(val); | |
532 | } | |
533 | ||
234b63a0 | 534 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
535 | { |
536 | return le32_to_cpu(ei->refs); | |
537 | } | |
538 | ||
234b63a0 | 539 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
540 | { |
541 | ei->refs = cpu_to_le32(val); | |
542 | } | |
543 | ||
4d775673 CM |
544 | static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei) |
545 | { | |
546 | return le64_to_cpu(ei->owner); | |
547 | } | |
548 | ||
549 | static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val) | |
550 | { | |
551 | ei->owner = cpu_to_le64(val); | |
552 | } | |
553 | ||
234b63a0 | 554 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 555 | { |
123abc88 | 556 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
557 | } |
558 | ||
4d775673 | 559 | |
234b63a0 CM |
560 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
561 | u64 val) | |
1d4f8a0c | 562 | { |
123abc88 | 563 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
564 | } |
565 | ||
123abc88 | 566 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 567 | { |
123abc88 | 568 | return le32_to_cpu(item->offset); |
0783fcfc CM |
569 | } |
570 | ||
123abc88 | 571 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 572 | { |
123abc88 | 573 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
574 | } |
575 | ||
123abc88 | 576 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 577 | { |
123abc88 | 578 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
579 | } |
580 | ||
581 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
582 | { | |
583 | return le16_to_cpu(item->size); | |
584 | } | |
585 | ||
586 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
587 | { | |
588 | item->size = cpu_to_le16(val); | |
589 | } | |
590 | ||
1d4f6404 CM |
591 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
592 | { | |
593 | return le16_to_cpu(d->flags); | |
594 | } | |
595 | ||
596 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
597 | { | |
598 | d->flags = cpu_to_le16(val); | |
599 | } | |
600 | ||
601 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
602 | { | |
603 | return d->type; | |
604 | } | |
605 | ||
606 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
607 | { | |
608 | d->type = val; | |
609 | } | |
610 | ||
a8a2ee0c CM |
611 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
612 | { | |
613 | return le16_to_cpu(d->name_len); | |
614 | } | |
615 | ||
616 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 617 | { |
a8a2ee0c | 618 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
619 | } |
620 | ||
e2fa7227 CM |
621 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
622 | struct btrfs_disk_key *disk) | |
623 | { | |
624 | cpu->offset = le64_to_cpu(disk->offset); | |
625 | cpu->flags = le32_to_cpu(disk->flags); | |
626 | cpu->objectid = le64_to_cpu(disk->objectid); | |
627 | } | |
628 | ||
629 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
630 | struct btrfs_key *cpu) | |
631 | { | |
632 | disk->offset = cpu_to_le64(cpu->offset); | |
633 | disk->flags = cpu_to_le32(cpu->flags); | |
634 | disk->objectid = cpu_to_le64(cpu->objectid); | |
635 | } | |
636 | ||
62e2749e | 637 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
638 | { |
639 | return le64_to_cpu(disk->objectid); | |
640 | } | |
641 | ||
62e2749e CM |
642 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
643 | u64 val) | |
e2fa7227 CM |
644 | { |
645 | disk->objectid = cpu_to_le64(val); | |
646 | } | |
647 | ||
62e2749e | 648 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
649 | { |
650 | return le64_to_cpu(disk->offset); | |
651 | } | |
652 | ||
62e2749e CM |
653 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
654 | u64 val) | |
e2fa7227 CM |
655 | { |
656 | disk->offset = cpu_to_le64(val); | |
657 | } | |
658 | ||
62e2749e | 659 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
660 | { |
661 | return le32_to_cpu(disk->flags); | |
662 | } | |
663 | ||
62e2749e CM |
664 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
665 | u32 val) | |
e2fa7227 CM |
666 | { |
667 | disk->flags = cpu_to_le32(val); | |
668 | } | |
669 | ||
a429e513 | 670 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 671 | { |
a429e513 | 672 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
673 | } |
674 | ||
a429e513 CM |
675 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
676 | u32 val) | |
7fcde0e3 | 677 | { |
a429e513 CM |
678 | u32 flags = btrfs_disk_key_flags(key); |
679 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
680 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
681 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
682 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
683 | } |
684 | ||
62e2749e CM |
685 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
686 | { | |
a429e513 | 687 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
688 | } |
689 | ||
a429e513 | 690 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 691 | { |
a429e513 CM |
692 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
693 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
694 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
695 | } |
696 | ||
bb492bb0 | 697 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 698 | { |
bb492bb0 | 699 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
700 | } |
701 | ||
bb492bb0 | 702 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 703 | { |
bb492bb0 | 704 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
705 | } |
706 | ||
7f5c1516 CM |
707 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
708 | { | |
709 | return le64_to_cpu(h->generation); | |
710 | } | |
711 | ||
712 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
713 | u64 val) | |
714 | { | |
715 | h->generation = cpu_to_le64(val); | |
716 | } | |
717 | ||
4d775673 CM |
718 | static inline u64 btrfs_header_owner(struct btrfs_header *h) |
719 | { | |
720 | return le64_to_cpu(h->owner); | |
721 | } | |
722 | ||
723 | static inline void btrfs_set_header_owner(struct btrfs_header *h, | |
724 | u64 val) | |
725 | { | |
726 | h->owner = cpu_to_le64(val); | |
727 | } | |
728 | ||
bb492bb0 | 729 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 730 | { |
bb492bb0 | 731 | return le16_to_cpu(h->nritems); |
7518a238 CM |
732 | } |
733 | ||
bb492bb0 | 734 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 735 | { |
bb492bb0 | 736 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
737 | } |
738 | ||
bb492bb0 | 739 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 740 | { |
bb492bb0 | 741 | return le16_to_cpu(h->flags); |
7518a238 CM |
742 | } |
743 | ||
bb492bb0 | 744 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 745 | { |
bb492bb0 | 746 | h->flags = cpu_to_le16(val); |
7518a238 CM |
747 | } |
748 | ||
bb492bb0 | 749 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 750 | { |
9a6f11ed | 751 | return h->level; |
7518a238 CM |
752 | } |
753 | ||
bb492bb0 | 754 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 755 | { |
234b63a0 | 756 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 757 | h->level = level; |
7518a238 CM |
758 | } |
759 | ||
234b63a0 | 760 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
761 | { |
762 | return (btrfs_header_level(&n->header) == 0); | |
763 | } | |
764 | ||
3768f368 CM |
765 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
766 | { | |
767 | return le64_to_cpu(item->blocknr); | |
768 | } | |
769 | ||
770 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
771 | { | |
772 | item->blocknr = cpu_to_le64(val); | |
773 | } | |
774 | ||
d6e4a428 CM |
775 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
776 | { | |
777 | return le64_to_cpu(item->root_dirid); | |
778 | } | |
779 | ||
780 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
781 | { | |
782 | item->root_dirid = cpu_to_le64(val); | |
783 | } | |
784 | ||
3768f368 CM |
785 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
786 | { | |
787 | return le32_to_cpu(item->refs); | |
788 | } | |
789 | ||
790 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
791 | { | |
792 | item->refs = cpu_to_le32(val); | |
793 | } | |
794 | ||
795 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) | |
796 | { | |
797 | return le64_to_cpu(s->blocknr); | |
798 | } | |
799 | ||
800 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
801 | { | |
802 | s->blocknr = cpu_to_le64(val); | |
803 | } | |
804 | ||
0f7d52f4 CM |
805 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
806 | { | |
807 | return le64_to_cpu(s->generation); | |
808 | } | |
809 | ||
810 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
811 | u64 val) | |
812 | { | |
813 | s->generation = cpu_to_le64(val); | |
814 | } | |
815 | ||
3768f368 CM |
816 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
817 | { | |
818 | return le64_to_cpu(s->root); | |
819 | } | |
820 | ||
821 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
822 | { | |
823 | s->root = cpu_to_le64(val); | |
824 | } | |
825 | ||
826 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
827 | { | |
828 | return le64_to_cpu(s->total_blocks); | |
829 | } | |
830 | ||
831 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
832 | u64 val) | |
833 | { | |
834 | s->total_blocks = cpu_to_le64(val); | |
835 | } | |
836 | ||
837 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
838 | { | |
839 | return le64_to_cpu(s->blocks_used); | |
840 | } | |
841 | ||
842 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
843 | u64 val) | |
844 | { | |
845 | s->blocks_used = cpu_to_le64(val); | |
846 | } | |
847 | ||
123abc88 | 848 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 849 | { |
123abc88 | 850 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
851 | } |
852 | ||
853 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
854 | u32 val) |
855 | { | |
856 | s->blocksize = cpu_to_le32(val); | |
857 | } | |
858 | ||
2e635a27 CM |
859 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
860 | { | |
861 | return le64_to_cpu(s->root_dir_objectid); | |
862 | } | |
863 | ||
864 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
865 | val) | |
866 | { | |
867 | s->root_dir_objectid = cpu_to_le64(val); | |
868 | } | |
869 | ||
b4100d64 CM |
870 | static inline u64 btrfs_super_last_device_id(struct btrfs_super_block *s) |
871 | { | |
872 | return le64_to_cpu(s->last_device_id); | |
873 | } | |
874 | ||
875 | static inline void btrfs_set_super_last_device_id(struct btrfs_super_block *s, | |
876 | u64 val) | |
877 | { | |
878 | s->last_device_id = cpu_to_le64(val); | |
879 | } | |
880 | ||
881 | static inline u64 btrfs_super_device_id(struct btrfs_super_block *s) | |
882 | { | |
883 | return le64_to_cpu(s->device_id); | |
884 | } | |
885 | ||
886 | static inline void btrfs_set_super_device_id(struct btrfs_super_block *s, | |
887 | u64 val) | |
888 | { | |
889 | s->device_id = cpu_to_le64(val); | |
890 | } | |
891 | ||
0bd93ba0 CM |
892 | static inline u64 btrfs_super_device_block_start(struct btrfs_super_block *s) |
893 | { | |
894 | return le64_to_cpu(s->device_block_start); | |
895 | } | |
896 | ||
897 | static inline void btrfs_set_super_device_block_start(struct btrfs_super_block | |
898 | *s, u64 val) | |
899 | { | |
900 | s->device_block_start = cpu_to_le64(val); | |
901 | } | |
902 | ||
903 | static inline u64 btrfs_super_device_num_blocks(struct btrfs_super_block *s) | |
904 | { | |
905 | return le64_to_cpu(s->device_num_blocks); | |
906 | } | |
907 | ||
908 | static inline void btrfs_set_super_device_num_blocks(struct btrfs_super_block | |
909 | *s, u64 val) | |
910 | { | |
911 | s->device_num_blocks = cpu_to_le64(val); | |
912 | } | |
913 | ||
914 | static inline u64 btrfs_super_device_root(struct btrfs_super_block *s) | |
915 | { | |
916 | return le64_to_cpu(s->device_root); | |
917 | } | |
918 | ||
919 | static inline void btrfs_set_super_device_root(struct btrfs_super_block | |
920 | *s, u64 val) | |
921 | { | |
922 | s->device_root = cpu_to_le64(val); | |
923 | } | |
924 | ||
925 | ||
123abc88 | 926 | static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) |
3768f368 | 927 | { |
123abc88 | 928 | return (u8 *)l->items; |
3768f368 | 929 | } |
9f5fae2f | 930 | |
236454df CM |
931 | static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e) |
932 | { | |
933 | return e->type; | |
934 | } | |
935 | static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e, | |
936 | u8 val) | |
937 | { | |
938 | e->type = val; | |
939 | } | |
940 | ||
941 | static inline char *btrfs_file_extent_inline_start(struct | |
942 | btrfs_file_extent_item *e) | |
943 | { | |
944 | return (char *)(&e->disk_blocknr); | |
945 | } | |
946 | ||
947 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
948 | { | |
949 | return (unsigned long)(&((struct | |
950 | btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize; | |
951 | } | |
952 | ||
953 | static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e) | |
954 | { | |
955 | struct btrfs_file_extent_item *fe = NULL; | |
956 | return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr); | |
957 | } | |
958 | ||
9f5fae2f CM |
959 | static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item |
960 | *e) | |
961 | { | |
962 | return le64_to_cpu(e->disk_blocknr); | |
963 | } | |
964 | ||
965 | static inline void btrfs_set_file_extent_disk_blocknr(struct | |
966 | btrfs_file_extent_item | |
967 | *e, u64 val) | |
968 | { | |
969 | e->disk_blocknr = cpu_to_le64(val); | |
970 | } | |
971 | ||
71951f35 CM |
972 | static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e) |
973 | { | |
974 | return le64_to_cpu(e->generation); | |
975 | } | |
976 | ||
977 | static inline void btrfs_set_file_extent_generation(struct | |
978 | btrfs_file_extent_item *e, | |
979 | u64 val) | |
980 | { | |
981 | e->generation = cpu_to_le64(val); | |
982 | } | |
983 | ||
9f5fae2f CM |
984 | static inline u64 btrfs_file_extent_disk_num_blocks(struct |
985 | btrfs_file_extent_item *e) | |
986 | { | |
987 | return le64_to_cpu(e->disk_num_blocks); | |
988 | } | |
989 | ||
990 | static inline void btrfs_set_file_extent_disk_num_blocks(struct | |
991 | btrfs_file_extent_item | |
992 | *e, u64 val) | |
993 | { | |
994 | e->disk_num_blocks = cpu_to_le64(val); | |
995 | } | |
996 | ||
997 | static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e) | |
998 | { | |
999 | return le64_to_cpu(e->offset); | |
1000 | } | |
1001 | ||
1002 | static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item | |
1003 | *e, u64 val) | |
1004 | { | |
1005 | e->offset = cpu_to_le64(val); | |
1006 | } | |
1007 | ||
1008 | static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item | |
1009 | *e) | |
1010 | { | |
1011 | return le64_to_cpu(e->num_blocks); | |
1012 | } | |
1013 | ||
1014 | static inline void btrfs_set_file_extent_num_blocks(struct | |
1015 | btrfs_file_extent_item *e, | |
1016 | u64 val) | |
1017 | { | |
1018 | e->num_blocks = cpu_to_le64(val); | |
1019 | } | |
1020 | ||
0bd93ba0 CM |
1021 | static inline u16 btrfs_device_pathlen(struct btrfs_device_item *d) |
1022 | { | |
1023 | return le16_to_cpu(d->pathlen); | |
1024 | } | |
1025 | ||
1026 | static inline void btrfs_set_device_pathlen(struct btrfs_device_item *d, | |
1027 | u16 val) | |
1028 | { | |
1029 | d->pathlen = cpu_to_le16(val); | |
1030 | } | |
1031 | ||
b4100d64 CM |
1032 | static inline u64 btrfs_device_id(struct btrfs_device_item *d) |
1033 | { | |
1034 | return le64_to_cpu(d->device_id); | |
1035 | } | |
1036 | ||
1037 | static inline void btrfs_set_device_id(struct btrfs_device_item *d, | |
1038 | u64 val) | |
1039 | { | |
1040 | d->device_id = cpu_to_le64(val); | |
1041 | } | |
1042 | ||
e20d96d6 CM |
1043 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1044 | { | |
1045 | return sb->s_fs_info; | |
1046 | } | |
1047 | ||
d6025579 CM |
1048 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
1049 | void *vcontainer, size_t container_len) | |
1050 | { | |
1051 | char *ptr = vptr; | |
1052 | char *container = vcontainer; | |
1053 | WARN_ON(ptr < container); | |
1054 | WARN_ON(ptr + len > container + container_len); | |
1055 | } | |
1056 | ||
1057 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
1058 | void *dst_block, | |
1059 | void *dst, const void *src, size_t nr) | |
1060 | { | |
1061 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1062 | memcpy(dst, src, nr); | |
1063 | } | |
1064 | ||
1065 | static inline void btrfs_memmove(struct btrfs_root *root, | |
1066 | void *dst_block, | |
1067 | void *dst, void *src, size_t nr) | |
1068 | { | |
1069 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1070 | memmove(dst, src, nr); | |
1071 | } | |
1072 | ||
1073 | static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) | |
1074 | { | |
1075 | WARN_ON(!atomic_read(&bh->b_count)); | |
1076 | mark_buffer_dirty(bh); | |
1077 | } | |
1078 | ||
4beb1b8b CM |
1079 | /* helper function to cast into the data area of the leaf. */ |
1080 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
1081 | ((type *)(btrfs_leaf_data(leaf) + \ |
1082 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 1083 | |
b18c6685 | 1084 | /* extent-tree.c */ |
31f3c99b CM |
1085 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1086 | struct btrfs_block_group_cache | |
be744175 | 1087 | *hint, u64 search_start, |
de428b63 | 1088 | int data, int owner); |
c5739bba CM |
1089 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
1090 | struct btrfs_root *root); | |
e20d96d6 | 1091 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
31f3c99b | 1092 | struct btrfs_root *root, u64 hint); |
4d775673 CM |
1093 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
1094 | struct btrfs_root *root, u64 owner, | |
c62a1920 | 1095 | u64 num_blocks, u64 search_start, |
be08c1b9 | 1096 | u64 search_end, struct btrfs_key *ins, int data); |
e089f05c | 1097 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1098 | struct buffer_head *buf); |
e089f05c CM |
1099 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1100 | *root, u64 blocknr, u64 num_blocks, int pin); | |
dee26a9f CM |
1101 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct |
1102 | btrfs_root *root); | |
b18c6685 CM |
1103 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1104 | struct btrfs_root *root, | |
1105 | u64 blocknr, u64 num_blocks); | |
9078a3e1 CM |
1106 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1107 | struct btrfs_root *root); | |
1108 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1109 | int btrfs_read_block_groups(struct btrfs_root *root); | |
dee26a9f | 1110 | /* ctree.c */ |
6567e837 CM |
1111 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1112 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1113 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1114 | struct btrfs_root *root, | |
1115 | struct btrfs_path *path, | |
1116 | u32 new_size); | |
e089f05c CM |
1117 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1118 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1119 | ins_len, int cow); | |
234b63a0 | 1120 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1121 | struct btrfs_path *btrfs_alloc_path(void); |
1122 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1123 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1124 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1125 | struct btrfs_path *path); | |
1126 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1127 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1128 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1129 | *root, struct btrfs_path *path, struct btrfs_key | |
1130 | *cpu_key, u32 data_size); | |
234b63a0 | 1131 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1132 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1133 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
e20d96d6 | 1134 | *root, struct buffer_head *snap); |
dee26a9f | 1135 | /* root-item.c */ |
e089f05c CM |
1136 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1137 | struct btrfs_key *key); | |
1138 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1139 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1140 | *item); | |
1141 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1142 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1143 | *item); | |
1144 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1145 | btrfs_root_item *item, struct btrfs_key *key); | |
dee26a9f | 1146 | /* dir-item.c */ |
e089f05c | 1147 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1148 | *root, const char *name, int name_len, u64 dir, |
1149 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1150 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1151 | struct btrfs_root *root, | |
1152 | struct btrfs_path *path, u64 dir, | |
1153 | const char *name, int name_len, | |
1154 | int mod); | |
1155 | struct btrfs_dir_item * | |
1156 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1157 | struct btrfs_root *root, | |
1158 | struct btrfs_path *path, u64 dir, | |
1159 | u64 objectid, const char *name, int name_len, | |
1160 | int mod); | |
1161 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1162 | struct btrfs_path *path, | |
7f5c1516 | 1163 | const char *name, int name_len); |
7e38180e CM |
1164 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1165 | struct btrfs_root *root, | |
1166 | struct btrfs_path *path, | |
1167 | struct btrfs_dir_item *di); | |
dee26a9f | 1168 | /* inode-map.c */ |
9f5fae2f CM |
1169 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1170 | struct btrfs_root *fs_root, | |
1171 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1172 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1173 | ||
dee26a9f | 1174 | /* inode-item.c */ |
293ffd5f CM |
1175 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1176 | *root, u64 objectid, struct btrfs_inode_item | |
1177 | *inode_item); | |
1178 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1179 | *root, struct btrfs_path *path, |
1180 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1181 | |
1182 | /* file-item.c */ | |
b18c6685 | 1183 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1184 | struct btrfs_root *root, |
b18c6685 | 1185 | u64 objectid, u64 pos, u64 offset, |
3a686375 | 1186 | u64 disk_num_blocks, |
b18c6685 | 1187 | u64 num_blocks); |
dee26a9f CM |
1188 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1189 | struct btrfs_root *root, | |
1190 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1191 | u64 blocknr, int mod); |
f254e52c CM |
1192 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1193 | struct btrfs_root *root, | |
1194 | u64 objectid, u64 offset, | |
1195 | char *data, size_t len); | |
1196 | int btrfs_csum_verify_file_block(struct btrfs_root *root, | |
1197 | u64 objectid, u64 offset, | |
1198 | char *data, size_t len); | |
b18c6685 CM |
1199 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1200 | struct btrfs_root *root, | |
1201 | struct btrfs_path *path, | |
1202 | u64 objectid, u64 offset, | |
1203 | int cow); | |
1de037a4 CM |
1204 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1205 | struct btrfs_root *root, struct btrfs_path *path, | |
1206 | u64 isize); | |
d6e4a428 | 1207 | /* super.c */ |
eb60ceac | 1208 | #endif |