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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
234b63a0 CM |
19 | #ifndef __BTRFS__ |
20 | #define __BTRFS__ | |
eb60ceac | 21 | |
e20d96d6 | 22 | #include <linux/fs.h> |
d6025579 | 23 | #include <linux/buffer_head.h> |
08607c1b | 24 | #include <linux/workqueue.h> |
58176a96 | 25 | #include <linux/completion.h> |
8ef97622 | 26 | #include "bit-radix.h" |
e20d96d6 | 27 | |
e089f05c | 28 | struct btrfs_trans_handle; |
79154b1b | 29 | struct btrfs_transaction; |
35b7e476 CM |
30 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
31 | extern struct kmem_cache *btrfs_transaction_cachep; | |
32 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 33 | extern struct kmem_cache *btrfs_path_cachep; |
e089f05c | 34 | |
3768f368 | 35 | #define BTRFS_MAGIC "_BtRfS_M" |
eb60ceac | 36 | |
6407bf6d | 37 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0cf6c620 CM |
38 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
39 | #define BTRFS_FS_TREE_OBJECTID 3ULL | |
40 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 4ULL | |
41 | #define BTRFS_FIRST_FREE_OBJECTID 5ULL | |
3768f368 | 42 | |
e20d96d6 CM |
43 | /* |
44 | * we can actually store much bigger names, but lets not confuse the rest | |
45 | * of linux | |
46 | */ | |
47 | #define BTRFS_NAME_LEN 255 | |
48 | ||
f254e52c CM |
49 | /* 32 bytes in various csum fields */ |
50 | #define BTRFS_CSUM_SIZE 32 | |
509659cd CM |
51 | /* four bytes for CRC32 */ |
52 | #define BTRFS_CRC32_SIZE 4 | |
e06afa83 | 53 | #define BTRFS_EMPTY_DIR_SIZE 6 |
f254e52c | 54 | |
fabb5681 CM |
55 | #define BTRFS_FT_UNKNOWN 0 |
56 | #define BTRFS_FT_REG_FILE 1 | |
57 | #define BTRFS_FT_DIR 2 | |
58 | #define BTRFS_FT_CHRDEV 3 | |
59 | #define BTRFS_FT_BLKDEV 4 | |
60 | #define BTRFS_FT_FIFO 5 | |
61 | #define BTRFS_FT_SOCK 6 | |
62 | #define BTRFS_FT_SYMLINK 7 | |
63 | #define BTRFS_FT_MAX 8 | |
64 | ||
fec577fb CM |
65 | /* |
66 | * the key defines the order in the tree, and so it also defines (optimal) | |
67 | * block layout. objectid corresonds to the inode number. The flags | |
68 | * tells us things about the object, and is a kind of stream selector. | |
69 | * so for a given inode, keys with flags of 1 might refer to the inode | |
70 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
71 | * may point to extents. | |
72 | * | |
73 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
74 | * |
75 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
76 | * in cpu native order. Otherwise they are identical and their sizes | |
77 | * should be the same (ie both packed) | |
fec577fb | 78 | */ |
e2fa7227 CM |
79 | struct btrfs_disk_key { |
80 | __le64 objectid; | |
f254e52c | 81 | __le32 flags; |
70b2befd | 82 | __le64 offset; |
e2fa7227 CM |
83 | } __attribute__ ((__packed__)); |
84 | ||
85 | struct btrfs_key { | |
eb60ceac | 86 | u64 objectid; |
f254e52c | 87 | u32 flags; |
70b2befd | 88 | u64 offset; |
eb60ceac CM |
89 | } __attribute__ ((__packed__)); |
90 | ||
fec577fb CM |
91 | /* |
92 | * every tree block (leaf or node) starts with this header. | |
93 | */ | |
bb492bb0 | 94 | struct btrfs_header { |
f254e52c | 95 | u8 csum[BTRFS_CSUM_SIZE]; |
3768f368 | 96 | u8 fsid[16]; /* FS specific uuid */ |
bb492bb0 | 97 | __le64 blocknr; /* which block this node is supposed to live in */ |
7f5c1516 | 98 | __le64 generation; |
4d775673 | 99 | __le64 owner; |
bb492bb0 CM |
100 | __le16 nritems; |
101 | __le16 flags; | |
9a6f11ed | 102 | u8 level; |
eb60ceac CM |
103 | } __attribute__ ((__packed__)); |
104 | ||
234b63a0 | 105 | #define BTRFS_MAX_LEVEL 8 |
123abc88 CM |
106 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \ |
107 | sizeof(struct btrfs_header)) / \ | |
108 | (sizeof(struct btrfs_disk_key) + sizeof(u64))) | |
109 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) | |
110 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize)) | |
236454df CM |
111 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
112 | sizeof(struct btrfs_item) - \ | |
113 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 114 | |
e20d96d6 | 115 | struct buffer_head; |
fec577fb CM |
116 | /* |
117 | * the super block basically lists the main trees of the FS | |
118 | * it currently lacks any block count etc etc | |
119 | */ | |
234b63a0 | 120 | struct btrfs_super_block { |
f254e52c | 121 | u8 csum[BTRFS_CSUM_SIZE]; |
87cbda5c | 122 | /* the first 3 fields must match struct btrfs_header */ |
3768f368 CM |
123 | u8 fsid[16]; /* FS specific uuid */ |
124 | __le64 blocknr; /* this block number */ | |
3768f368 | 125 | __le64 magic; |
3768f368 CM |
126 | __le64 generation; |
127 | __le64 root; | |
128 | __le64 total_blocks; | |
129 | __le64 blocks_used; | |
2e635a27 | 130 | __le64 root_dir_objectid; |
5eda7b5e | 131 | __le32 blocksize; |
cfaa7295 CM |
132 | } __attribute__ ((__packed__)); |
133 | ||
fec577fb | 134 | /* |
62e2749e | 135 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
136 | * the item in the leaf (relative to the start of the data area) |
137 | */ | |
0783fcfc | 138 | struct btrfs_item { |
e2fa7227 | 139 | struct btrfs_disk_key key; |
123abc88 | 140 | __le32 offset; |
0783fcfc | 141 | __le16 size; |
eb60ceac CM |
142 | } __attribute__ ((__packed__)); |
143 | ||
fec577fb CM |
144 | /* |
145 | * leaves have an item area and a data area: | |
146 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
147 | * | |
148 | * The data is separate from the items to get the keys closer together | |
149 | * during searches. | |
150 | */ | |
234b63a0 | 151 | struct btrfs_leaf { |
bb492bb0 | 152 | struct btrfs_header header; |
123abc88 | 153 | struct btrfs_item items[]; |
eb60ceac CM |
154 | } __attribute__ ((__packed__)); |
155 | ||
fec577fb CM |
156 | /* |
157 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
158 | * other blocks | |
159 | */ | |
123abc88 CM |
160 | struct btrfs_key_ptr { |
161 | struct btrfs_disk_key key; | |
162 | __le64 blockptr; | |
163 | } __attribute__ ((__packed__)); | |
164 | ||
234b63a0 | 165 | struct btrfs_node { |
bb492bb0 | 166 | struct btrfs_header header; |
123abc88 | 167 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
168 | } __attribute__ ((__packed__)); |
169 | ||
fec577fb | 170 | /* |
234b63a0 CM |
171 | * btrfs_paths remember the path taken from the root down to the leaf. |
172 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
173 | * to any other levels that are present. |
174 | * | |
175 | * The slots array records the index of the item or block pointer | |
176 | * used while walking the tree. | |
177 | */ | |
234b63a0 | 178 | struct btrfs_path { |
e20d96d6 | 179 | struct buffer_head *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 180 | int slots[BTRFS_MAX_LEVEL]; |
3c69faec | 181 | int reada; |
6702ed49 | 182 | int lowest_level; |
eb60ceac | 183 | }; |
5de08d7d | 184 | |
62e2749e CM |
185 | /* |
186 | * items in the extent btree are used to record the objectid of the | |
187 | * owner of the block and the number of references | |
188 | */ | |
189 | struct btrfs_extent_item { | |
190 | __le32 refs; | |
4d775673 | 191 | __le64 owner; |
62e2749e CM |
192 | } __attribute__ ((__packed__)); |
193 | ||
1e1d2701 | 194 | struct btrfs_inode_timespec { |
f254e52c | 195 | __le64 sec; |
1e1d2701 CM |
196 | __le32 nsec; |
197 | } __attribute__ ((__packed__)); | |
198 | ||
199 | /* | |
200 | * there is no padding here on purpose. If you want to extent the inode, | |
201 | * make a new item type | |
202 | */ | |
203 | struct btrfs_inode_item { | |
204 | __le64 generation; | |
205 | __le64 size; | |
206 | __le64 nblocks; | |
31f3c99b | 207 | __le64 block_group; |
1e1d2701 CM |
208 | __le32 nlink; |
209 | __le32 uid; | |
210 | __le32 gid; | |
211 | __le32 mode; | |
212 | __le32 rdev; | |
213 | __le16 flags; | |
214 | __le16 compat_flags; | |
215 | struct btrfs_inode_timespec atime; | |
216 | struct btrfs_inode_timespec ctime; | |
217 | struct btrfs_inode_timespec mtime; | |
218 | struct btrfs_inode_timespec otime; | |
219 | } __attribute__ ((__packed__)); | |
220 | ||
62e2749e | 221 | struct btrfs_dir_item { |
d6e4a428 | 222 | struct btrfs_disk_key location; |
62e2749e | 223 | __le16 flags; |
a8a2ee0c | 224 | __le16 name_len; |
62e2749e CM |
225 | u8 type; |
226 | } __attribute__ ((__packed__)); | |
227 | ||
228 | struct btrfs_root_item { | |
d6e4a428 CM |
229 | struct btrfs_inode_item inode; |
230 | __le64 root_dirid; | |
62e2749e | 231 | __le64 blocknr; |
62e2749e CM |
232 | __le64 block_limit; |
233 | __le64 blocks_used; | |
5eda7b5e | 234 | __le32 flags; |
62e2749e | 235 | __le32 refs; |
5eda7b5e CM |
236 | struct btrfs_disk_key drop_progress; |
237 | u8 drop_level; | |
9f5fae2f | 238 | } __attribute__ ((__packed__)); |
62e2749e | 239 | |
236454df CM |
240 | #define BTRFS_FILE_EXTENT_REG 0 |
241 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
242 | ||
9f5fae2f | 243 | struct btrfs_file_extent_item { |
71951f35 | 244 | __le64 generation; |
236454df | 245 | u8 type; |
9f5fae2f CM |
246 | /* |
247 | * disk space consumed by the extent, checksum blocks are included | |
248 | * in these numbers | |
249 | */ | |
250 | __le64 disk_blocknr; | |
251 | __le64 disk_num_blocks; | |
252 | /* | |
dee26a9f | 253 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
254 | * this extent record is for. This allows a file extent to point |
255 | * into the middle of an existing extent on disk, sharing it | |
256 | * between two snapshots (useful if some bytes in the middle of the | |
257 | * extent have changed | |
258 | */ | |
259 | __le64 offset; | |
260 | /* | |
261 | * the logical number of file blocks (no csums included) | |
262 | */ | |
263 | __le64 num_blocks; | |
264 | } __attribute__ ((__packed__)); | |
265 | ||
f254e52c | 266 | struct btrfs_csum_item { |
509659cd | 267 | u8 csum; |
f254e52c CM |
268 | } __attribute__ ((__packed__)); |
269 | ||
9078a3e1 CM |
270 | /* tag for the radix tree of block groups in ram */ |
271 | #define BTRFS_BLOCK_GROUP_DIRTY 0 | |
31f3c99b | 272 | #define BTRFS_BLOCK_GROUP_AVAIL 1 |
9078a3e1 | 273 | #define BTRFS_BLOCK_GROUP_SIZE (256 * 1024 * 1024) |
1e2677e0 CM |
274 | |
275 | ||
276 | #define BTRFS_BLOCK_GROUP_DATA 1 | |
9078a3e1 CM |
277 | struct btrfs_block_group_item { |
278 | __le64 used; | |
1e2677e0 | 279 | u8 flags; |
9078a3e1 CM |
280 | } __attribute__ ((__packed__)); |
281 | ||
282 | struct btrfs_block_group_cache { | |
283 | struct btrfs_key key; | |
284 | struct btrfs_block_group_item item; | |
3e1ad54f | 285 | struct radix_tree_root *radix; |
cd1bc465 CM |
286 | u64 first_free; |
287 | u64 last_alloc; | |
be744175 | 288 | u64 pinned; |
e37c9e69 | 289 | u64 last_prealloc; |
be744175 | 290 | int data; |
e37c9e69 | 291 | int cached; |
9078a3e1 CM |
292 | }; |
293 | ||
9f5fae2f | 294 | struct btrfs_fs_info { |
62e2749e CM |
295 | struct btrfs_root *extent_root; |
296 | struct btrfs_root *tree_root; | |
0f7d52f4 | 297 | struct radix_tree_root fs_roots_radix; |
8ef97622 | 298 | struct radix_tree_root pending_del_radix; |
62e2749e | 299 | struct radix_tree_root pinned_radix; |
9078a3e1 | 300 | struct radix_tree_root block_group_radix; |
be744175 | 301 | struct radix_tree_root block_group_data_radix; |
e37c9e69 | 302 | struct radix_tree_root extent_map_radix; |
26b8003f | 303 | struct radix_tree_root extent_ins_radix; |
293ffd5f | 304 | u64 generation; |
15ee9bc7 | 305 | u64 last_trans_committed; |
79154b1b | 306 | struct btrfs_transaction *running_transaction; |
1261ec42 | 307 | struct btrfs_super_block *disk_super; |
4b52dff6 | 308 | struct btrfs_super_block super_copy; |
e20d96d6 CM |
309 | struct buffer_head *sb_buffer; |
310 | struct super_block *sb; | |
d98237b3 | 311 | struct inode *btree_inode; |
79154b1b | 312 | struct mutex trans_mutex; |
d561c025 | 313 | struct mutex fs_mutex; |
8fd17795 | 314 | struct list_head trans_list; |
facda1e7 | 315 | struct list_head dead_roots; |
08607c1b | 316 | struct delayed_work trans_work; |
58176a96 JB |
317 | struct kobject super_kobj; |
318 | struct completion kobj_unregister; | |
e66f709b | 319 | int do_barriers; |
facda1e7 | 320 | int closing; |
9f5fae2f CM |
321 | }; |
322 | ||
323 | /* | |
324 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 325 | * and for the extent tree extent_root root. |
9f5fae2f CM |
326 | */ |
327 | struct btrfs_root { | |
e20d96d6 CM |
328 | struct buffer_head *node; |
329 | struct buffer_head *commit_root; | |
62e2749e CM |
330 | struct btrfs_root_item root_item; |
331 | struct btrfs_key root_key; | |
9f5fae2f | 332 | struct btrfs_fs_info *fs_info; |
0f7d52f4 | 333 | struct inode *inode; |
58176a96 JB |
334 | struct kobject root_kobj; |
335 | struct completion kobj_unregister; | |
0f7d52f4 CM |
336 | u64 objectid; |
337 | u64 last_trans; | |
62e2749e | 338 | u32 blocksize; |
9f5fae2f | 339 | u32 type; |
1b05da2e CM |
340 | u64 highest_inode; |
341 | u64 last_inode_alloc; | |
9f3a7427 | 342 | int ref_cows; |
6702ed49 CM |
343 | struct btrfs_key defrag_progress; |
344 | int defrag_running; | |
345 | int defrag_level; | |
58176a96 | 346 | char *name; |
62e2749e CM |
347 | }; |
348 | ||
62e2749e CM |
349 | /* the lower bits in the key flags defines the item type */ |
350 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
351 | #define BTRFS_KEY_TYPE_SHIFT 24 |
352 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
353 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
354 | |
355 | /* | |
356 | * inode items have the data typically returned from stat and store other | |
357 | * info about object characteristics. There is one for every file and dir in | |
358 | * the FS | |
359 | */ | |
9078a3e1 CM |
360 | #define BTRFS_INODE_ITEM_KEY 1 |
361 | ||
362 | /* reserve 2-15 close to the inode for later flexibility */ | |
1e1d2701 CM |
363 | |
364 | /* | |
365 | * dir items are the name -> inode pointers in a directory. There is one | |
366 | * for every name in a directory. | |
367 | */ | |
9078a3e1 CM |
368 | #define BTRFS_DIR_ITEM_KEY 16 |
369 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 370 | /* |
9078a3e1 | 371 | * extent data is for file data |
1e1d2701 | 372 | */ |
9078a3e1 | 373 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
374 | /* |
375 | * csum items have the checksums for data in the extents | |
376 | */ | |
9078a3e1 CM |
377 | #define BTRFS_CSUM_ITEM_KEY 19 |
378 | ||
379 | /* reserve 20-31 for other file stuff */ | |
f254e52c | 380 | |
1e1d2701 CM |
381 | /* |
382 | * root items point to tree roots. There are typically in the root | |
383 | * tree used by the super block to find all the other trees | |
384 | */ | |
9078a3e1 | 385 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
386 | /* |
387 | * extent items are in the extent map tree. These record which blocks | |
388 | * are used, and how many references there are to each block | |
389 | */ | |
9078a3e1 CM |
390 | #define BTRFS_EXTENT_ITEM_KEY 33 |
391 | ||
392 | /* | |
393 | * block groups give us hints into the extent allocation trees. Which | |
394 | * blocks are free etc etc | |
395 | */ | |
396 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 34 | |
9f5fae2f | 397 | |
1e1d2701 CM |
398 | /* |
399 | * string items are for debugging. They just store a short string of | |
400 | * data in the FS | |
401 | */ | |
9078a3e1 CM |
402 | #define BTRFS_STRING_ITEM_KEY 253 |
403 | ||
404 | ||
405 | static inline u64 btrfs_block_group_used(struct btrfs_block_group_item *bi) | |
406 | { | |
407 | return le64_to_cpu(bi->used); | |
408 | } | |
409 | ||
410 | static inline void btrfs_set_block_group_used(struct | |
411 | btrfs_block_group_item *bi, | |
412 | u64 val) | |
413 | { | |
414 | bi->used = cpu_to_le64(val); | |
415 | } | |
1e1d2701 CM |
416 | |
417 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
418 | { | |
419 | return le64_to_cpu(i->generation); | |
420 | } | |
421 | ||
422 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
423 | u64 val) | |
424 | { | |
425 | i->generation = cpu_to_le64(val); | |
426 | } | |
427 | ||
428 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
429 | { | |
430 | return le64_to_cpu(i->size); | |
431 | } | |
432 | ||
433 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
434 | { | |
435 | i->size = cpu_to_le64(val); | |
436 | } | |
437 | ||
438 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
439 | { | |
440 | return le64_to_cpu(i->nblocks); | |
441 | } | |
442 | ||
443 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
444 | { | |
445 | i->nblocks = cpu_to_le64(val); | |
446 | } | |
447 | ||
31f3c99b CM |
448 | static inline u64 btrfs_inode_block_group(struct btrfs_inode_item *i) |
449 | { | |
450 | return le64_to_cpu(i->block_group); | |
451 | } | |
452 | ||
453 | static inline void btrfs_set_inode_block_group(struct btrfs_inode_item *i, | |
454 | u64 val) | |
455 | { | |
456 | i->block_group = cpu_to_le64(val); | |
457 | } | |
458 | ||
1e1d2701 CM |
459 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) |
460 | { | |
461 | return le32_to_cpu(i->nlink); | |
462 | } | |
463 | ||
464 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
465 | { | |
466 | i->nlink = cpu_to_le32(val); | |
467 | } | |
468 | ||
469 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
470 | { | |
471 | return le32_to_cpu(i->uid); | |
472 | } | |
473 | ||
474 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
475 | { | |
476 | i->uid = cpu_to_le32(val); | |
477 | } | |
478 | ||
479 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
480 | { | |
481 | return le32_to_cpu(i->gid); | |
482 | } | |
483 | ||
484 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
485 | { | |
486 | i->gid = cpu_to_le32(val); | |
487 | } | |
488 | ||
489 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
490 | { | |
491 | return le32_to_cpu(i->mode); | |
492 | } | |
493 | ||
494 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
495 | { | |
496 | i->mode = cpu_to_le32(val); | |
497 | } | |
498 | ||
499 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
500 | { | |
501 | return le32_to_cpu(i->rdev); | |
502 | } | |
503 | ||
504 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
505 | { | |
506 | i->rdev = cpu_to_le32(val); | |
507 | } | |
508 | ||
509 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
510 | { | |
511 | return le16_to_cpu(i->flags); | |
512 | } | |
513 | ||
514 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
515 | { | |
516 | i->flags = cpu_to_le16(val); | |
517 | } | |
518 | ||
519 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
520 | { | |
521 | return le16_to_cpu(i->compat_flags); | |
522 | } | |
523 | ||
524 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
525 | u16 val) | |
526 | { | |
527 | i->compat_flags = cpu_to_le16(val); | |
528 | } | |
529 | ||
f254e52c | 530 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 531 | { |
f254e52c | 532 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
533 | } |
534 | ||
535 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 536 | u64 val) |
e20d96d6 | 537 | { |
f254e52c | 538 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
539 | } |
540 | ||
541 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
542 | { | |
543 | return le32_to_cpu(ts->nsec); | |
544 | } | |
545 | ||
546 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
547 | u32 val) | |
548 | { | |
549 | ts->nsec = cpu_to_le32(val); | |
550 | } | |
551 | ||
234b63a0 | 552 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
553 | { |
554 | return le32_to_cpu(ei->refs); | |
555 | } | |
556 | ||
234b63a0 | 557 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
558 | { |
559 | ei->refs = cpu_to_le32(val); | |
560 | } | |
561 | ||
4d775673 CM |
562 | static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei) |
563 | { | |
564 | return le64_to_cpu(ei->owner); | |
565 | } | |
566 | ||
567 | static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val) | |
568 | { | |
569 | ei->owner = cpu_to_le64(val); | |
570 | } | |
571 | ||
234b63a0 | 572 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 573 | { |
123abc88 | 574 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
575 | } |
576 | ||
4d775673 | 577 | |
234b63a0 CM |
578 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
579 | u64 val) | |
1d4f8a0c | 580 | { |
123abc88 | 581 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
582 | } |
583 | ||
123abc88 | 584 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 585 | { |
123abc88 | 586 | return le32_to_cpu(item->offset); |
0783fcfc CM |
587 | } |
588 | ||
123abc88 | 589 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 590 | { |
123abc88 | 591 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
592 | } |
593 | ||
123abc88 | 594 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 595 | { |
123abc88 | 596 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
597 | } |
598 | ||
599 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
600 | { | |
601 | return le16_to_cpu(item->size); | |
602 | } | |
603 | ||
604 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
605 | { | |
606 | item->size = cpu_to_le16(val); | |
607 | } | |
608 | ||
1d4f6404 CM |
609 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
610 | { | |
611 | return le16_to_cpu(d->flags); | |
612 | } | |
613 | ||
614 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
615 | { | |
616 | d->flags = cpu_to_le16(val); | |
617 | } | |
618 | ||
619 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
620 | { | |
621 | return d->type; | |
622 | } | |
623 | ||
624 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
625 | { | |
626 | d->type = val; | |
627 | } | |
628 | ||
a8a2ee0c CM |
629 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
630 | { | |
631 | return le16_to_cpu(d->name_len); | |
632 | } | |
633 | ||
634 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 635 | { |
a8a2ee0c | 636 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
637 | } |
638 | ||
e2fa7227 CM |
639 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
640 | struct btrfs_disk_key *disk) | |
641 | { | |
642 | cpu->offset = le64_to_cpu(disk->offset); | |
643 | cpu->flags = le32_to_cpu(disk->flags); | |
644 | cpu->objectid = le64_to_cpu(disk->objectid); | |
645 | } | |
646 | ||
647 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
648 | struct btrfs_key *cpu) | |
649 | { | |
650 | disk->offset = cpu_to_le64(cpu->offset); | |
651 | disk->flags = cpu_to_le32(cpu->flags); | |
652 | disk->objectid = cpu_to_le64(cpu->objectid); | |
653 | } | |
654 | ||
62e2749e | 655 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
656 | { |
657 | return le64_to_cpu(disk->objectid); | |
658 | } | |
659 | ||
62e2749e CM |
660 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
661 | u64 val) | |
e2fa7227 CM |
662 | { |
663 | disk->objectid = cpu_to_le64(val); | |
664 | } | |
665 | ||
62e2749e | 666 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
667 | { |
668 | return le64_to_cpu(disk->offset); | |
669 | } | |
670 | ||
62e2749e CM |
671 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
672 | u64 val) | |
e2fa7227 CM |
673 | { |
674 | disk->offset = cpu_to_le64(val); | |
675 | } | |
676 | ||
62e2749e | 677 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
678 | { |
679 | return le32_to_cpu(disk->flags); | |
680 | } | |
681 | ||
62e2749e CM |
682 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
683 | u32 val) | |
e2fa7227 CM |
684 | { |
685 | disk->flags = cpu_to_le32(val); | |
686 | } | |
687 | ||
a429e513 | 688 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 689 | { |
a429e513 | 690 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
691 | } |
692 | ||
a429e513 CM |
693 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
694 | u32 val) | |
7fcde0e3 | 695 | { |
a429e513 CM |
696 | u32 flags = btrfs_disk_key_flags(key); |
697 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
698 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
699 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
700 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
701 | } |
702 | ||
62e2749e CM |
703 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
704 | { | |
a429e513 | 705 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
706 | } |
707 | ||
a429e513 | 708 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 709 | { |
a429e513 CM |
710 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
711 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
712 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
713 | } |
714 | ||
bb492bb0 | 715 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 716 | { |
bb492bb0 | 717 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
718 | } |
719 | ||
bb492bb0 | 720 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 721 | { |
bb492bb0 | 722 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
723 | } |
724 | ||
7f5c1516 CM |
725 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
726 | { | |
727 | return le64_to_cpu(h->generation); | |
728 | } | |
729 | ||
730 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
731 | u64 val) | |
732 | { | |
733 | h->generation = cpu_to_le64(val); | |
734 | } | |
735 | ||
4d775673 CM |
736 | static inline u64 btrfs_header_owner(struct btrfs_header *h) |
737 | { | |
738 | return le64_to_cpu(h->owner); | |
739 | } | |
740 | ||
741 | static inline void btrfs_set_header_owner(struct btrfs_header *h, | |
742 | u64 val) | |
743 | { | |
744 | h->owner = cpu_to_le64(val); | |
745 | } | |
746 | ||
bb492bb0 | 747 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 748 | { |
bb492bb0 | 749 | return le16_to_cpu(h->nritems); |
7518a238 CM |
750 | } |
751 | ||
bb492bb0 | 752 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 753 | { |
bb492bb0 | 754 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
755 | } |
756 | ||
bb492bb0 | 757 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 758 | { |
bb492bb0 | 759 | return le16_to_cpu(h->flags); |
7518a238 CM |
760 | } |
761 | ||
bb492bb0 | 762 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 763 | { |
bb492bb0 | 764 | h->flags = cpu_to_le16(val); |
7518a238 CM |
765 | } |
766 | ||
bb492bb0 | 767 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 768 | { |
9a6f11ed | 769 | return h->level; |
7518a238 CM |
770 | } |
771 | ||
bb492bb0 | 772 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 773 | { |
234b63a0 | 774 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 775 | h->level = level; |
7518a238 CM |
776 | } |
777 | ||
234b63a0 | 778 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
779 | { |
780 | return (btrfs_header_level(&n->header) == 0); | |
781 | } | |
782 | ||
3768f368 CM |
783 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
784 | { | |
785 | return le64_to_cpu(item->blocknr); | |
786 | } | |
787 | ||
788 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
789 | { | |
790 | item->blocknr = cpu_to_le64(val); | |
791 | } | |
792 | ||
d6e4a428 CM |
793 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
794 | { | |
795 | return le64_to_cpu(item->root_dirid); | |
796 | } | |
797 | ||
798 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
799 | { | |
800 | item->root_dirid = cpu_to_le64(val); | |
801 | } | |
802 | ||
3768f368 CM |
803 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
804 | { | |
805 | return le32_to_cpu(item->refs); | |
806 | } | |
807 | ||
808 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
809 | { | |
810 | item->refs = cpu_to_le32(val); | |
811 | } | |
812 | ||
5eda7b5e CM |
813 | static inline u32 btrfs_root_flags(struct btrfs_root_item *item) |
814 | { | |
815 | return le32_to_cpu(item->flags); | |
816 | } | |
817 | ||
818 | static inline void btrfs_set_root_flags(struct btrfs_root_item *item, u32 val) | |
819 | { | |
820 | item->flags = cpu_to_le32(val); | |
821 | } | |
822 | ||
58176a96 JB |
823 | static inline void btrfs_set_root_blocks_used(struct btrfs_root_item *item, |
824 | u64 val) | |
825 | { | |
826 | item->blocks_used = cpu_to_le64(val); | |
827 | } | |
828 | ||
829 | static inline u64 btrfs_root_blocks_used(struct btrfs_root_item *item) | |
830 | { | |
831 | return le64_to_cpu(item->blocks_used); | |
832 | } | |
833 | ||
834 | static inline void btrfs_set_root_block_limit(struct btrfs_root_item *item, | |
835 | u64 val) | |
836 | { | |
837 | item->block_limit = cpu_to_le64(val); | |
838 | } | |
839 | ||
840 | static inline u64 btrfs_root_block_limit(struct btrfs_root_item *item) | |
841 | { | |
842 | return le64_to_cpu(item->block_limit); | |
843 | } | |
844 | ||
3768f368 CM |
845 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) |
846 | { | |
847 | return le64_to_cpu(s->blocknr); | |
848 | } | |
849 | ||
850 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
851 | { | |
852 | s->blocknr = cpu_to_le64(val); | |
853 | } | |
854 | ||
0f7d52f4 CM |
855 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
856 | { | |
857 | return le64_to_cpu(s->generation); | |
858 | } | |
859 | ||
860 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
861 | u64 val) | |
862 | { | |
863 | s->generation = cpu_to_le64(val); | |
864 | } | |
865 | ||
3768f368 CM |
866 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
867 | { | |
868 | return le64_to_cpu(s->root); | |
869 | } | |
870 | ||
871 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
872 | { | |
873 | s->root = cpu_to_le64(val); | |
874 | } | |
875 | ||
876 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
877 | { | |
878 | return le64_to_cpu(s->total_blocks); | |
879 | } | |
880 | ||
881 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
882 | u64 val) | |
883 | { | |
884 | s->total_blocks = cpu_to_le64(val); | |
885 | } | |
886 | ||
887 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
888 | { | |
889 | return le64_to_cpu(s->blocks_used); | |
890 | } | |
891 | ||
892 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
893 | u64 val) | |
894 | { | |
895 | s->blocks_used = cpu_to_le64(val); | |
896 | } | |
897 | ||
123abc88 | 898 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 899 | { |
123abc88 | 900 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
901 | } |
902 | ||
903 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
904 | u32 val) |
905 | { | |
906 | s->blocksize = cpu_to_le32(val); | |
907 | } | |
908 | ||
2e635a27 CM |
909 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
910 | { | |
911 | return le64_to_cpu(s->root_dir_objectid); | |
912 | } | |
913 | ||
914 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
915 | val) | |
916 | { | |
917 | s->root_dir_objectid = cpu_to_le64(val); | |
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 | ||
e20d96d6 CM |
1015 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1016 | { | |
1017 | return sb->s_fs_info; | |
1018 | } | |
1019 | ||
d6025579 CM |
1020 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
1021 | void *vcontainer, size_t container_len) | |
1022 | { | |
1023 | char *ptr = vptr; | |
1024 | char *container = vcontainer; | |
1025 | WARN_ON(ptr < container); | |
1026 | WARN_ON(ptr + len > container + container_len); | |
1027 | } | |
1028 | ||
1029 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
1030 | void *dst_block, | |
1031 | void *dst, const void *src, size_t nr) | |
1032 | { | |
1033 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1034 | memcpy(dst, src, nr); | |
1035 | } | |
1036 | ||
1037 | static inline void btrfs_memmove(struct btrfs_root *root, | |
1038 | void *dst_block, | |
1039 | void *dst, void *src, size_t nr) | |
1040 | { | |
1041 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1042 | memmove(dst, src, nr); | |
1043 | } | |
1044 | ||
58176a96 JB |
1045 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1046 | const char *name, int len) | |
1047 | { | |
1048 | /* if we already have a name just free it */ | |
1049 | if (root->name) | |
1050 | kfree(root->name); | |
1051 | ||
1052 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1053 | if (!root->name) | |
1054 | return -ENOMEM; | |
1055 | ||
1056 | memcpy(root->name, name, len); | |
1057 | root->name[len] ='\0'; | |
1058 | ||
1059 | return 0; | |
1060 | } | |
1061 | ||
4beb1b8b CM |
1062 | /* helper function to cast into the data area of the leaf. */ |
1063 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
1064 | ((type *)(btrfs_leaf_data(leaf) + \ |
1065 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 1066 | |
b18c6685 | 1067 | /* extent-tree.c */ |
e9d0b13b CM |
1068 | int btrfs_extent_post_op(struct btrfs_trans_handle *trans, |
1069 | struct btrfs_root *root); | |
ccd467d6 | 1070 | int btrfs_copy_pinned(struct btrfs_root *root, struct radix_tree_root *copy); |
5276aeda CM |
1071 | struct btrfs_block_group_cache *btrfs_lookup_block_group(struct |
1072 | btrfs_fs_info *info, | |
1073 | u64 blocknr); | |
31f3c99b CM |
1074 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1075 | struct btrfs_block_group_cache | |
be744175 | 1076 | *hint, u64 search_start, |
de428b63 | 1077 | int data, int owner); |
c5739bba CM |
1078 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
1079 | struct btrfs_root *root); | |
e20d96d6 | 1080 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
6702ed49 CM |
1081 | struct btrfs_root *root, u64 hint, |
1082 | u64 empty_size); | |
4d775673 CM |
1083 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
1084 | struct btrfs_root *root, u64 owner, | |
6702ed49 | 1085 | u64 num_blocks, u64 empty_size, u64 search_start, |
be08c1b9 | 1086 | u64 search_end, struct btrfs_key *ins, int data); |
e089f05c | 1087 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1088 | struct buffer_head *buf); |
e089f05c CM |
1089 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1090 | *root, u64 blocknr, u64 num_blocks, int pin); | |
ccd467d6 CM |
1091 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1092 | struct btrfs_root *root, | |
1093 | struct radix_tree_root *unpin_radix); | |
b18c6685 CM |
1094 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1095 | struct btrfs_root *root, | |
1096 | u64 blocknr, u64 num_blocks); | |
9078a3e1 CM |
1097 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1098 | struct btrfs_root *root); | |
1099 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1100 | int btrfs_read_block_groups(struct btrfs_root *root); | |
dee26a9f | 1101 | /* ctree.c */ |
6702ed49 CM |
1102 | int btrfs_cow_block(struct btrfs_trans_handle *trans, struct btrfs_root |
1103 | *root, struct buffer_head *buf, struct buffer_head | |
1104 | *parent, int parent_slot, struct buffer_head | |
1105 | **cow_ret); | |
6567e837 CM |
1106 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1107 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1108 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1109 | struct btrfs_root *root, | |
1110 | struct btrfs_path *path, | |
1111 | u32 new_size); | |
e089f05c CM |
1112 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1113 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1114 | ins_len, int cow); | |
6702ed49 CM |
1115 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
1116 | struct btrfs_root *root, struct buffer_head *parent, | |
e9d0b13b | 1117 | int cache_only, u64 *last_ret); |
234b63a0 | 1118 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1119 | struct btrfs_path *btrfs_alloc_path(void); |
1120 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1121 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1122 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1123 | struct btrfs_path *path); | |
1124 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1125 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1126 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1127 | *root, struct btrfs_path *path, struct btrfs_key | |
1128 | *cpu_key, u32 data_size); | |
234b63a0 | 1129 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1130 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1131 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1132 | *root); |
dee26a9f | 1133 | /* root-item.c */ |
e089f05c CM |
1134 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1135 | struct btrfs_key *key); | |
1136 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1137 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1138 | *item); | |
1139 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1140 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1141 | *item); | |
1142 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1143 | btrfs_root_item *item, struct btrfs_key *key); | |
5eda7b5e | 1144 | int btrfs_find_dead_roots(struct btrfs_root *root); |
dee26a9f | 1145 | /* dir-item.c */ |
e089f05c | 1146 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1147 | *root, const char *name, int name_len, u64 dir, |
1148 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1149 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1150 | struct btrfs_root *root, | |
1151 | struct btrfs_path *path, u64 dir, | |
1152 | const char *name, int name_len, | |
1153 | int mod); | |
1154 | struct btrfs_dir_item * | |
1155 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1156 | struct btrfs_root *root, | |
1157 | struct btrfs_path *path, u64 dir, | |
1158 | u64 objectid, const char *name, int name_len, | |
1159 | int mod); | |
1160 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1161 | struct btrfs_path *path, | |
7f5c1516 | 1162 | const char *name, int name_len); |
7e38180e CM |
1163 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1164 | struct btrfs_root *root, | |
1165 | struct btrfs_path *path, | |
1166 | struct btrfs_dir_item *di); | |
dee26a9f | 1167 | /* inode-map.c */ |
9f5fae2f CM |
1168 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1169 | struct btrfs_root *fs_root, | |
1170 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1171 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1172 | ||
dee26a9f | 1173 | /* inode-item.c */ |
293ffd5f CM |
1174 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1175 | *root, u64 objectid, struct btrfs_inode_item | |
1176 | *inode_item); | |
1177 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1178 | *root, struct btrfs_path *path, |
1179 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1180 | |
1181 | /* file-item.c */ | |
b18c6685 | 1182 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1183 | struct btrfs_root *root, |
b18c6685 | 1184 | u64 objectid, u64 pos, u64 offset, |
3a686375 | 1185 | u64 disk_num_blocks, |
b18c6685 | 1186 | u64 num_blocks); |
dee26a9f CM |
1187 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1188 | struct btrfs_root *root, | |
1189 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1190 | u64 blocknr, int mod); |
f254e52c CM |
1191 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1192 | struct btrfs_root *root, | |
1193 | u64 objectid, u64 offset, | |
1194 | char *data, size_t len); | |
b18c6685 CM |
1195 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1196 | struct btrfs_root *root, | |
1197 | struct btrfs_path *path, | |
1198 | u64 objectid, u64 offset, | |
1199 | int cow); | |
1de037a4 CM |
1200 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1201 | struct btrfs_root *root, struct btrfs_path *path, | |
1202 | u64 isize); | |
39279cc3 | 1203 | /* inode.c */ |
9ebefb18 CM |
1204 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
1205 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 CM |
1206 | void btrfs_delete_inode(struct inode *inode); |
1207 | void btrfs_read_locked_inode(struct inode *inode); | |
1208 | int btrfs_write_inode(struct inode *inode, int wait); | |
1209 | void btrfs_dirty_inode(struct inode *inode); | |
1210 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
1211 | void btrfs_destroy_inode(struct inode *inode); | |
1212 | int btrfs_init_cachep(void); | |
1213 | void btrfs_destroy_cachep(void); | |
1214 | int btrfs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, | |
1215 | unsigned long arg); | |
1216 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, | |
1217 | unsigned long arg); | |
1218 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, | |
1219 | struct btrfs_root *root); | |
1220 | int btrfs_commit_write(struct file *file, struct page *page, | |
1221 | unsigned from, unsigned to); | |
1222 | int btrfs_get_block(struct inode *inode, sector_t iblock, | |
1223 | struct buffer_head *result, int create); | |
a52d9a80 CM |
1224 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
1225 | size_t page_offset, u64 start, u64 end, | |
1226 | int create); | |
1227 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
1228 | struct btrfs_root *root, | |
1229 | struct inode *inode); | |
39279cc3 | 1230 | /* file.c */ |
a52d9a80 | 1231 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end); |
39279cc3 CM |
1232 | extern struct file_operations btrfs_file_operations; |
1233 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
1234 | struct btrfs_root *root, struct inode *inode, | |
1235 | u64 start, u64 end, u64 *hint_block); | |
6702ed49 CM |
1236 | /* tree-defrag.c */ |
1237 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
1238 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
1239 | |
1240 | /* sysfs.c */ | |
1241 | int btrfs_init_sysfs(void); | |
1242 | void btrfs_exit_sysfs(void); | |
1243 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
1244 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
1245 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
1246 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
1247 | ||
eb60ceac | 1248 | #endif |