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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 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
6da6abae | 22 | #include <linux/version.h> |
810191ff CM |
23 | #include <linux/mm.h> |
24 | #include <linux/highmem.h> | |
e20d96d6 | 25 | #include <linux/fs.h> |
58176a96 | 26 | #include <linux/completion.h> |
04160088 | 27 | #include <linux/backing-dev.h> |
e6dcd2dc | 28 | #include <linux/wait.h> |
479965d6 | 29 | #include <asm/kmap_types.h> |
8ef97622 | 30 | #include "bit-radix.h" |
d1310b2e | 31 | #include "extent_io.h" |
5f39d397 | 32 | #include "extent_map.h" |
8b712842 | 33 | #include "async-thread.h" |
e20d96d6 | 34 | |
e089f05c | 35 | struct btrfs_trans_handle; |
79154b1b | 36 | struct btrfs_transaction; |
35b7e476 CM |
37 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
38 | extern struct kmem_cache *btrfs_transaction_cachep; | |
39 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 40 | extern struct kmem_cache *btrfs_path_cachep; |
e6dcd2dc | 41 | struct btrfs_ordered_sum; |
e089f05c | 42 | |
8a4b83cc | 43 | #define BTRFS_MAGIC "_B5RfS_M" |
eb60ceac | 44 | |
6dddcbeb CM |
45 | #ifdef CONFIG_LOCKDEP |
46 | # define BTRFS_MAX_LEVEL 7 | |
47 | #else | |
48 | # define BTRFS_MAX_LEVEL 8 | |
49 | #endif | |
0b86a832 CM |
50 | |
51 | /* holds pointers to all of the tree roots */ | |
6407bf6d | 52 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
53 | |
54 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 55 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 56 | |
0b86a832 CM |
57 | /* |
58 | * chunk tree stores translations from logical -> physical block numbering | |
59 | * the super block points to the chunk tree | |
60 | */ | |
e085def2 | 61 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
62 | |
63 | /* | |
64 | * stores information about which areas of a given device are in use. | |
65 | * one per device. The tree of tree roots points to the device tree | |
66 | */ | |
e085def2 CM |
67 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
68 | ||
69 | /* one per subvolume, storing files and directories */ | |
70 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
71 | ||
72 | /* directory objectid inside the root tree */ | |
73 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 CM |
74 | |
75 | /* | |
76 | * All files have objectids higher than this. | |
77 | */ | |
f6dbff55 | 78 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
e17cade2 | 79 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 80 | |
0b86a832 CM |
81 | |
82 | /* | |
83 | * the device items go into the chunk tree. The key is in the form | |
84 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
85 | */ | |
86 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
87 | ||
e20d96d6 CM |
88 | /* |
89 | * we can actually store much bigger names, but lets not confuse the rest | |
90 | * of linux | |
91 | */ | |
92 | #define BTRFS_NAME_LEN 255 | |
93 | ||
f254e52c CM |
94 | /* 32 bytes in various csum fields */ |
95 | #define BTRFS_CSUM_SIZE 32 | |
509659cd CM |
96 | /* four bytes for CRC32 */ |
97 | #define BTRFS_CRC32_SIZE 4 | |
3954401f | 98 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 99 | |
fabb5681 CM |
100 | #define BTRFS_FT_UNKNOWN 0 |
101 | #define BTRFS_FT_REG_FILE 1 | |
102 | #define BTRFS_FT_DIR 2 | |
103 | #define BTRFS_FT_CHRDEV 3 | |
104 | #define BTRFS_FT_BLKDEV 4 | |
105 | #define BTRFS_FT_FIFO 5 | |
106 | #define BTRFS_FT_SOCK 6 | |
107 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
108 | #define BTRFS_FT_XATTR 8 |
109 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 110 | |
fec577fb CM |
111 | /* |
112 | * the key defines the order in the tree, and so it also defines (optimal) | |
113 | * block layout. objectid corresonds to the inode number. The flags | |
114 | * tells us things about the object, and is a kind of stream selector. | |
115 | * so for a given inode, keys with flags of 1 might refer to the inode | |
116 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
117 | * may point to extents. | |
118 | * | |
119 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
120 | * |
121 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
122 | * in cpu native order. Otherwise they are identical and their sizes | |
123 | * should be the same (ie both packed) | |
fec577fb | 124 | */ |
e2fa7227 CM |
125 | struct btrfs_disk_key { |
126 | __le64 objectid; | |
5f39d397 | 127 | u8 type; |
70b2befd | 128 | __le64 offset; |
e2fa7227 CM |
129 | } __attribute__ ((__packed__)); |
130 | ||
131 | struct btrfs_key { | |
eb60ceac | 132 | u64 objectid; |
5f39d397 | 133 | u8 type; |
70b2befd | 134 | u64 offset; |
eb60ceac CM |
135 | } __attribute__ ((__packed__)); |
136 | ||
0b86a832 CM |
137 | struct btrfs_mapping_tree { |
138 | struct extent_map_tree map_tree; | |
139 | }; | |
140 | ||
e17cade2 | 141 | #define BTRFS_UUID_SIZE 16 |
0b86a832 CM |
142 | struct btrfs_dev_item { |
143 | /* the internal btrfs device id */ | |
144 | __le64 devid; | |
145 | ||
146 | /* size of the device */ | |
147 | __le64 total_bytes; | |
148 | ||
149 | /* bytes used */ | |
150 | __le64 bytes_used; | |
151 | ||
152 | /* optimal io alignment for this device */ | |
153 | __le32 io_align; | |
154 | ||
155 | /* optimal io width for this device */ | |
156 | __le32 io_width; | |
157 | ||
158 | /* minimal io size for this device */ | |
159 | __le32 sector_size; | |
160 | ||
0b86a832 CM |
161 | /* type and info about this device */ |
162 | __le64 type; | |
163 | ||
e17cade2 CM |
164 | /* grouping information for allocation decisions */ |
165 | __le32 dev_group; | |
166 | ||
167 | /* seek speed 0-100 where 100 is fastest */ | |
168 | u8 seek_speed; | |
169 | ||
170 | /* bandwidth 0-100 where 100 is fastest */ | |
171 | u8 bandwidth; | |
172 | ||
0d81ba5d | 173 | /* btrfs generated uuid for this device */ |
e17cade2 | 174 | u8 uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
175 | } __attribute__ ((__packed__)); |
176 | ||
177 | struct btrfs_stripe { | |
178 | __le64 devid; | |
179 | __le64 offset; | |
e17cade2 | 180 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
181 | } __attribute__ ((__packed__)); |
182 | ||
183 | struct btrfs_chunk { | |
e17cade2 CM |
184 | /* size of this chunk in bytes */ |
185 | __le64 length; | |
186 | ||
187 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 188 | __le64 owner; |
e17cade2 | 189 | |
0b86a832 CM |
190 | __le64 stripe_len; |
191 | __le64 type; | |
192 | ||
193 | /* optimal io alignment for this chunk */ | |
194 | __le32 io_align; | |
195 | ||
196 | /* optimal io width for this chunk */ | |
197 | __le32 io_width; | |
198 | ||
199 | /* minimal io size for this chunk */ | |
200 | __le32 sector_size; | |
201 | ||
202 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
203 | * item in the btree | |
204 | */ | |
205 | __le16 num_stripes; | |
321aecc6 CM |
206 | |
207 | /* sub stripes only matter for raid10 */ | |
208 | __le16 sub_stripes; | |
0b86a832 CM |
209 | struct btrfs_stripe stripe; |
210 | /* additional stripes go here */ | |
211 | } __attribute__ ((__packed__)); | |
212 | ||
213 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) | |
214 | { | |
215 | BUG_ON(num_stripes == 0); | |
216 | return sizeof(struct btrfs_chunk) + | |
217 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
218 | } | |
219 | ||
5f39d397 | 220 | #define BTRFS_FSID_SIZE 16 |
63b10fc4 CM |
221 | #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0) |
222 | ||
fec577fb CM |
223 | /* |
224 | * every tree block (leaf or node) starts with this header. | |
225 | */ | |
bb492bb0 | 226 | struct btrfs_header { |
e17cade2 | 227 | /* these first four must match the super block */ |
f254e52c | 228 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 229 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 230 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 231 | __le64 flags; |
e17cade2 CM |
232 | |
233 | /* allowed to be different from the super from here on down */ | |
234 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 235 | __le64 generation; |
4d775673 | 236 | __le64 owner; |
5f39d397 | 237 | __le32 nritems; |
9a6f11ed | 238 | u8 level; |
eb60ceac CM |
239 | } __attribute__ ((__packed__)); |
240 | ||
5f39d397 | 241 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
123abc88 | 242 | sizeof(struct btrfs_header)) / \ |
74493f7a | 243 | sizeof(struct btrfs_key_ptr)) |
123abc88 | 244 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 245 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
246 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
247 | sizeof(struct btrfs_item) - \ | |
248 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 249 | |
0b86a832 CM |
250 | |
251 | /* | |
252 | * this is a very generous portion of the super block, giving us | |
253 | * room to translate 14 chunks with 3 stripes each. | |
254 | */ | |
255 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 256 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 257 | |
fec577fb CM |
258 | /* |
259 | * the super block basically lists the main trees of the FS | |
260 | * it currently lacks any block count etc etc | |
261 | */ | |
234b63a0 | 262 | struct btrfs_super_block { |
f254e52c | 263 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 264 | /* the first 4 fields must match struct btrfs_header */ |
3768f368 | 265 | u8 fsid[16]; /* FS specific uuid */ |
db94535d | 266 | __le64 bytenr; /* this block number */ |
63b10fc4 | 267 | __le64 flags; |
e17cade2 CM |
268 | |
269 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 270 | __le64 magic; |
3768f368 CM |
271 | __le64 generation; |
272 | __le64 root; | |
0b86a832 | 273 | __le64 chunk_root; |
db94535d CM |
274 | __le64 total_bytes; |
275 | __le64 bytes_used; | |
2e635a27 | 276 | __le64 root_dir_objectid; |
8a4b83cc | 277 | __le64 num_devices; |
5f39d397 CM |
278 | __le32 sectorsize; |
279 | __le32 nodesize; | |
280 | __le32 leafsize; | |
87ee04eb | 281 | __le32 stripesize; |
0b86a832 | 282 | __le32 sys_chunk_array_size; |
db94535d | 283 | u8 root_level; |
0b86a832 | 284 | u8 chunk_root_level; |
0d81ba5d | 285 | struct btrfs_dev_item dev_item; |
7ae9c09d | 286 | char label[BTRFS_LABEL_SIZE]; |
0b86a832 | 287 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
288 | } __attribute__ ((__packed__)); |
289 | ||
fec577fb | 290 | /* |
62e2749e | 291 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
292 | * the item in the leaf (relative to the start of the data area) |
293 | */ | |
0783fcfc | 294 | struct btrfs_item { |
e2fa7227 | 295 | struct btrfs_disk_key key; |
123abc88 | 296 | __le32 offset; |
5f39d397 | 297 | __le32 size; |
eb60ceac CM |
298 | } __attribute__ ((__packed__)); |
299 | ||
fec577fb CM |
300 | /* |
301 | * leaves have an item area and a data area: | |
302 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
303 | * | |
304 | * The data is separate from the items to get the keys closer together | |
305 | * during searches. | |
306 | */ | |
234b63a0 | 307 | struct btrfs_leaf { |
bb492bb0 | 308 | struct btrfs_header header; |
123abc88 | 309 | struct btrfs_item items[]; |
eb60ceac CM |
310 | } __attribute__ ((__packed__)); |
311 | ||
fec577fb CM |
312 | /* |
313 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
314 | * other blocks | |
315 | */ | |
123abc88 CM |
316 | struct btrfs_key_ptr { |
317 | struct btrfs_disk_key key; | |
318 | __le64 blockptr; | |
74493f7a | 319 | __le64 generation; |
123abc88 CM |
320 | } __attribute__ ((__packed__)); |
321 | ||
234b63a0 | 322 | struct btrfs_node { |
bb492bb0 | 323 | struct btrfs_header header; |
123abc88 | 324 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
325 | } __attribute__ ((__packed__)); |
326 | ||
fec577fb | 327 | /* |
234b63a0 CM |
328 | * btrfs_paths remember the path taken from the root down to the leaf. |
329 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
330 | * to any other levels that are present. |
331 | * | |
332 | * The slots array records the index of the item or block pointer | |
333 | * used while walking the tree. | |
334 | */ | |
234b63a0 | 335 | struct btrfs_path { |
5f39d397 | 336 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 337 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
338 | /* if there is real range locking, this locks field will change */ |
339 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 340 | int reada; |
925baedd CM |
341 | /* keep some upper locks as we walk down */ |
342 | int keep_locks; | |
5cd57b2c | 343 | int skip_locking; |
6702ed49 | 344 | int lowest_level; |
eb60ceac | 345 | }; |
5de08d7d | 346 | |
62e2749e CM |
347 | /* |
348 | * items in the extent btree are used to record the objectid of the | |
349 | * owner of the block and the number of references | |
350 | */ | |
351 | struct btrfs_extent_item { | |
352 | __le32 refs; | |
74493f7a CM |
353 | } __attribute__ ((__packed__)); |
354 | ||
355 | struct btrfs_extent_ref { | |
356 | __le64 root; | |
357 | __le64 generation; | |
358 | __le64 objectid; | |
359 | __le64 offset; | |
62e2749e CM |
360 | } __attribute__ ((__packed__)); |
361 | ||
0b86a832 CM |
362 | /* dev extents record free space on individual devices. The owner |
363 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 364 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
365 | */ |
366 | struct btrfs_dev_extent { | |
e17cade2 CM |
367 | __le64 chunk_tree; |
368 | __le64 chunk_objectid; | |
369 | __le64 chunk_offset; | |
0b86a832 | 370 | __le64 length; |
e17cade2 | 371 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
372 | } __attribute__ ((__packed__)); |
373 | ||
3954401f CM |
374 | struct btrfs_inode_ref { |
375 | __le16 name_len; | |
376 | /* name goes here */ | |
377 | } __attribute__ ((__packed__)); | |
378 | ||
0b86a832 | 379 | struct btrfs_timespec { |
f254e52c | 380 | __le64 sec; |
1e1d2701 CM |
381 | __le32 nsec; |
382 | } __attribute__ ((__packed__)); | |
383 | ||
384 | /* | |
385 | * there is no padding here on purpose. If you want to extent the inode, | |
386 | * make a new item type | |
387 | */ | |
388 | struct btrfs_inode_item { | |
389 | __le64 generation; | |
390 | __le64 size; | |
391 | __le64 nblocks; | |
31f3c99b | 392 | __le64 block_group; |
1e1d2701 CM |
393 | __le32 nlink; |
394 | __le32 uid; | |
395 | __le32 gid; | |
396 | __le32 mode; | |
0b86a832 | 397 | __le64 rdev; |
1e1d2701 CM |
398 | __le16 flags; |
399 | __le16 compat_flags; | |
0b86a832 CM |
400 | struct btrfs_timespec atime; |
401 | struct btrfs_timespec ctime; | |
402 | struct btrfs_timespec mtime; | |
403 | struct btrfs_timespec otime; | |
1e1d2701 CM |
404 | } __attribute__ ((__packed__)); |
405 | ||
62e2749e | 406 | struct btrfs_dir_item { |
d6e4a428 | 407 | struct btrfs_disk_key location; |
5103e947 | 408 | __le16 data_len; |
a8a2ee0c | 409 | __le16 name_len; |
62e2749e CM |
410 | u8 type; |
411 | } __attribute__ ((__packed__)); | |
412 | ||
413 | struct btrfs_root_item { | |
d6e4a428 CM |
414 | struct btrfs_inode_item inode; |
415 | __le64 root_dirid; | |
db94535d CM |
416 | __le64 bytenr; |
417 | __le64 byte_limit; | |
418 | __le64 bytes_used; | |
5eda7b5e | 419 | __le32 flags; |
62e2749e | 420 | __le32 refs; |
5eda7b5e CM |
421 | struct btrfs_disk_key drop_progress; |
422 | u8 drop_level; | |
db94535d | 423 | u8 level; |
9f5fae2f | 424 | } __attribute__ ((__packed__)); |
62e2749e | 425 | |
236454df CM |
426 | #define BTRFS_FILE_EXTENT_REG 0 |
427 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
428 | ||
9f5fae2f | 429 | struct btrfs_file_extent_item { |
71951f35 | 430 | __le64 generation; |
236454df | 431 | u8 type; |
9f5fae2f CM |
432 | /* |
433 | * disk space consumed by the extent, checksum blocks are included | |
434 | * in these numbers | |
435 | */ | |
db94535d CM |
436 | __le64 disk_bytenr; |
437 | __le64 disk_num_bytes; | |
9f5fae2f | 438 | /* |
dee26a9f | 439 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
440 | * this extent record is for. This allows a file extent to point |
441 | * into the middle of an existing extent on disk, sharing it | |
442 | * between two snapshots (useful if some bytes in the middle of the | |
443 | * extent have changed | |
444 | */ | |
445 | __le64 offset; | |
446 | /* | |
447 | * the logical number of file blocks (no csums included) | |
448 | */ | |
db94535d | 449 | __le64 num_bytes; |
9f5fae2f CM |
450 | } __attribute__ ((__packed__)); |
451 | ||
f254e52c | 452 | struct btrfs_csum_item { |
509659cd | 453 | u8 csum; |
f254e52c CM |
454 | } __attribute__ ((__packed__)); |
455 | ||
0b86a832 CM |
456 | /* different types of block groups (and chunks) */ |
457 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
458 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
459 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 460 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 461 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 462 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 463 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
1e2677e0 | 464 | |
f84a8b36 | 465 | |
9078a3e1 CM |
466 | struct btrfs_block_group_item { |
467 | __le64 used; | |
0b86a832 CM |
468 | __le64 chunk_objectid; |
469 | __le64 flags; | |
9078a3e1 CM |
470 | } __attribute__ ((__packed__)); |
471 | ||
6324fbf3 CM |
472 | struct btrfs_space_info { |
473 | u64 flags; | |
474 | u64 total_bytes; | |
475 | u64 bytes_used; | |
476 | u64 bytes_pinned; | |
477 | int full; | |
0ef3e66b | 478 | int force_alloc; |
6324fbf3 CM |
479 | struct list_head list; |
480 | }; | |
481 | ||
9078a3e1 CM |
482 | struct btrfs_block_group_cache { |
483 | struct btrfs_key key; | |
484 | struct btrfs_block_group_item item; | |
6324fbf3 | 485 | struct btrfs_space_info *space_info; |
c286ac48 | 486 | spinlock_t lock; |
324ae4df | 487 | u64 pinned; |
0b86a832 CM |
488 | u64 flags; |
489 | int cached; | |
8f18cf13 | 490 | int ro; |
9078a3e1 | 491 | }; |
0b86a832 CM |
492 | |
493 | struct btrfs_device; | |
8a4b83cc | 494 | struct btrfs_fs_devices; |
9f5fae2f | 495 | struct btrfs_fs_info { |
5f39d397 | 496 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 497 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
498 | struct btrfs_root *extent_root; |
499 | struct btrfs_root *tree_root; | |
0b86a832 CM |
500 | struct btrfs_root *chunk_root; |
501 | struct btrfs_root *dev_root; | |
0f7d52f4 | 502 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 503 | |
d1310b2e CM |
504 | struct extent_io_tree free_space_cache; |
505 | struct extent_io_tree block_group_cache; | |
506 | struct extent_io_tree pinned_extents; | |
507 | struct extent_io_tree pending_del; | |
508 | struct extent_io_tree extent_ins; | |
1a5bc167 | 509 | |
0b86a832 CM |
510 | /* logical->physical extent mapping */ |
511 | struct btrfs_mapping_tree mapping_tree; | |
512 | ||
293ffd5f | 513 | u64 generation; |
15ee9bc7 | 514 | u64 last_trans_committed; |
b6cda9bc | 515 | unsigned long mount_opt; |
c59f8951 | 516 | u64 max_extent; |
6f568d35 | 517 | u64 max_inline; |
8f662a76 | 518 | u64 alloc_start; |
79154b1b | 519 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 520 | wait_queue_head_t transaction_throttle; |
f9295749 | 521 | wait_queue_head_t transaction_wait; |
4b52dff6 | 522 | struct btrfs_super_block super_copy; |
a061fc8d | 523 | struct btrfs_super_block super_for_commit; |
0b86a832 | 524 | struct block_device *__bdev; |
e20d96d6 | 525 | struct super_block *sb; |
d98237b3 | 526 | struct inode *btree_inode; |
04160088 | 527 | struct backing_dev_info bdi; |
19c00ddc | 528 | spinlock_t hash_lock; |
79154b1b | 529 | struct mutex trans_mutex; |
a74a4b97 CM |
530 | struct mutex transaction_kthread_mutex; |
531 | struct mutex cleaner_mutex; | |
925baedd CM |
532 | struct mutex alloc_mutex; |
533 | struct mutex chunk_mutex; | |
a2135011 | 534 | struct mutex drop_mutex; |
7d9eb12c | 535 | struct mutex volume_mutex; |
8fd17795 | 536 | struct list_head trans_list; |
19c00ddc | 537 | struct list_head hashers; |
facda1e7 | 538 | struct list_head dead_roots; |
cb03c743 | 539 | atomic_t nr_async_submits; |
ce9adaa5 | 540 | |
8b712842 CM |
541 | /* |
542 | * there is a pool of worker threads for checksumming during writes | |
543 | * and a pool for checksumming after reads. This is because readers | |
544 | * can run with FS locks held, and the writers may be waiting for | |
545 | * those locks. We don't want ordering in the pending list to cause | |
546 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
547 | * |
548 | * A third pool does submit_bio to avoid deadlocking with the other | |
549 | * two | |
8b712842 CM |
550 | */ |
551 | struct btrfs_workers workers; | |
552 | struct btrfs_workers endio_workers; | |
e6dcd2dc | 553 | struct btrfs_workers endio_write_workers; |
1cc127b5 | 554 | struct btrfs_workers submit_workers; |
247e743c CM |
555 | /* |
556 | * fixup workers take dirty pages that didn't properly go through | |
557 | * the cow mechanism and make them safe to write. It happens | |
558 | * for the sys_munmap function call path | |
559 | */ | |
560 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
561 | struct task_struct *transaction_kthread; |
562 | struct task_struct *cleaner_kthread; | |
4543df7e | 563 | int thread_pool_size; |
8b712842 | 564 | |
58176a96 JB |
565 | struct kobject super_kobj; |
566 | struct completion kobj_unregister; | |
e66f709b | 567 | int do_barriers; |
facda1e7 | 568 | int closing; |
a2135011 | 569 | atomic_t throttles; |
9f5fae2f | 570 | |
324ae4df | 571 | u64 total_pinned; |
0b86a832 CM |
572 | struct list_head dirty_cowonly_roots; |
573 | ||
8a4b83cc | 574 | struct btrfs_fs_devices *fs_devices; |
6324fbf3 | 575 | struct list_head space_info; |
1832a6d5 | 576 | spinlock_t delalloc_lock; |
cee36a03 | 577 | spinlock_t new_trans_lock; |
1832a6d5 | 578 | u64 delalloc_bytes; |
e18e4809 | 579 | u64 last_alloc; |
4529ba49 | 580 | u64 last_data_alloc; |
d18a2c44 CM |
581 | |
582 | u64 avail_data_alloc_bits; | |
583 | u64 avail_metadata_alloc_bits; | |
584 | u64 avail_system_alloc_bits; | |
585 | u64 data_alloc_profile; | |
586 | u64 metadata_alloc_profile; | |
587 | u64 system_alloc_profile; | |
788f20eb CM |
588 | |
589 | void *bdev_holder; | |
324ae4df | 590 | }; |
0b86a832 | 591 | |
9f5fae2f CM |
592 | /* |
593 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 594 | * and for the extent tree extent_root root. |
9f5fae2f CM |
595 | */ |
596 | struct btrfs_root { | |
5f39d397 | 597 | struct extent_buffer *node; |
925baedd CM |
598 | |
599 | /* the node lock is held while changing the node pointer */ | |
600 | spinlock_t node_lock; | |
601 | ||
5f39d397 | 602 | struct extent_buffer *commit_root; |
62e2749e CM |
603 | struct btrfs_root_item root_item; |
604 | struct btrfs_key root_key; | |
9f5fae2f | 605 | struct btrfs_fs_info *fs_info; |
0f7d52f4 | 606 | struct inode *inode; |
58176a96 JB |
607 | struct kobject root_kobj; |
608 | struct completion kobj_unregister; | |
a2135011 | 609 | struct mutex objectid_mutex; |
0f7d52f4 CM |
610 | u64 objectid; |
611 | u64 last_trans; | |
5f39d397 CM |
612 | |
613 | /* data allocations are done in sectorsize units */ | |
614 | u32 sectorsize; | |
615 | ||
616 | /* node allocations are done in nodesize units */ | |
617 | u32 nodesize; | |
618 | ||
619 | /* leaf allocations are done in leafsize units */ | |
620 | u32 leafsize; | |
621 | ||
87ee04eb CM |
622 | u32 stripesize; |
623 | ||
9f5fae2f | 624 | u32 type; |
1b05da2e CM |
625 | u64 highest_inode; |
626 | u64 last_inode_alloc; | |
9f3a7427 | 627 | int ref_cows; |
0b86a832 | 628 | int track_dirty; |
3f157a2f | 629 | u64 defrag_trans_start; |
6702ed49 | 630 | struct btrfs_key defrag_progress; |
0ef3e66b | 631 | struct btrfs_key defrag_max; |
6702ed49 CM |
632 | int defrag_running; |
633 | int defrag_level; | |
58176a96 | 634 | char *name; |
4313b399 | 635 | int in_sysfs; |
0b86a832 CM |
636 | |
637 | /* the dirty list is only used by non-reference counted roots */ | |
638 | struct list_head dirty_list; | |
62e2749e CM |
639 | }; |
640 | ||
1e1d2701 | 641 | /* |
0b86a832 | 642 | |
1e1d2701 CM |
643 | * inode items have the data typically returned from stat and store other |
644 | * info about object characteristics. There is one for every file and dir in | |
645 | * the FS | |
646 | */ | |
9078a3e1 | 647 | #define BTRFS_INODE_ITEM_KEY 1 |
3954401f CM |
648 | #define BTRFS_INODE_REF_KEY 2 |
649 | #define BTRFS_XATTR_ITEM_KEY 8 | |
9078a3e1 | 650 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
651 | |
652 | /* | |
653 | * dir items are the name -> inode pointers in a directory. There is one | |
654 | * for every name in a directory. | |
655 | */ | |
9078a3e1 CM |
656 | #define BTRFS_DIR_ITEM_KEY 16 |
657 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 658 | /* |
9078a3e1 | 659 | * extent data is for file data |
1e1d2701 | 660 | */ |
9078a3e1 | 661 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
662 | /* |
663 | * csum items have the checksums for data in the extents | |
664 | */ | |
9078a3e1 CM |
665 | #define BTRFS_CSUM_ITEM_KEY 19 |
666 | ||
667 | /* reserve 20-31 for other file stuff */ | |
f254e52c | 668 | |
1e1d2701 CM |
669 | /* |
670 | * root items point to tree roots. There are typically in the root | |
671 | * tree used by the super block to find all the other trees | |
672 | */ | |
9078a3e1 | 673 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
674 | /* |
675 | * extent items are in the extent map tree. These record which blocks | |
676 | * are used, and how many references there are to each block | |
677 | */ | |
9078a3e1 | 678 | #define BTRFS_EXTENT_ITEM_KEY 33 |
74493f7a | 679 | #define BTRFS_EXTENT_REF_KEY 34 |
9078a3e1 CM |
680 | |
681 | /* | |
682 | * block groups give us hints into the extent allocation trees. Which | |
683 | * blocks are free etc etc | |
684 | */ | |
74493f7a | 685 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 50 |
9f5fae2f | 686 | |
0b86a832 CM |
687 | #define BTRFS_DEV_EXTENT_KEY 75 |
688 | #define BTRFS_DEV_ITEM_KEY 76 | |
689 | #define BTRFS_CHUNK_ITEM_KEY 77 | |
690 | ||
1e1d2701 CM |
691 | /* |
692 | * string items are for debugging. They just store a short string of | |
693 | * data in the FS | |
694 | */ | |
9078a3e1 CM |
695 | #define BTRFS_STRING_ITEM_KEY 253 |
696 | ||
21ad10cf CM |
697 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
698 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
699 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 700 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 701 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
b6cda9bc CM |
702 | |
703 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
704 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
705 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
706 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
707 | /* |
708 | * Inode flags | |
709 | */ | |
fdebe2bd Y |
710 | #define BTRFS_INODE_NODATASUM (1 << 0) |
711 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
712 | #define BTRFS_INODE_READONLY (1 << 2) | |
b98b6767 Y |
713 | #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \ |
714 | ~BTRFS_INODE_##flag) | |
715 | #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \ | |
716 | BTRFS_INODE_##flag) | |
717 | #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \ | |
718 | BTRFS_INODE_##flag) | |
5f39d397 CM |
719 | /* some macros to generate set/get funcs for the struct fields. This |
720 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
721 | * one for u8: | |
722 | */ | |
723 | #define le8_to_cpu(v) (v) | |
724 | #define cpu_to_le8(v) (v) | |
725 | #define __le8 u8 | |
726 | ||
727 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
728 | read_extent_buffer(eb, (char *)(result), \ | |
729 | ((unsigned long)(ptr)) + \ | |
730 | offsetof(type, member), \ | |
731 | sizeof(((type *)0)->member))) | |
732 | ||
733 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
734 | write_extent_buffer(eb, (char *)(result), \ | |
735 | ((unsigned long)(ptr)) + \ | |
736 | offsetof(type, member), \ | |
737 | sizeof(((type *)0)->member))) | |
738 | ||
0f82731f | 739 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 740 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
741 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
742 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
743 | #endif | |
5f39d397 CM |
744 | |
745 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
746 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
747 | { \ | |
df68b8a7 DM |
748 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
749 | u##bits res = le##bits##_to_cpu(p->member); \ | |
750 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 751 | return res; \ |
5f39d397 CM |
752 | } \ |
753 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
754 | u##bits val) \ | |
755 | { \ | |
df68b8a7 DM |
756 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
757 | p->member = cpu_to_le##bits(val); \ | |
758 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 759 | } |
9078a3e1 | 760 | |
5f39d397 CM |
761 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
762 | static inline u##bits btrfs_##name(type *s) \ | |
763 | { \ | |
764 | return le##bits##_to_cpu(s->member); \ | |
765 | } \ | |
766 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
767 | { \ | |
768 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
769 | } |
770 | ||
0b86a832 CM |
771 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
772 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
773 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
774 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
775 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
776 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); | |
777 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
778 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
779 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
780 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
0b86a832 | 781 | |
8a4b83cc CM |
782 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
783 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
784 | total_bytes, 64); | |
785 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
786 | bytes_used, 64); | |
787 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
788 | io_align, 32); | |
789 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
790 | io_width, 32); | |
791 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
792 | sector_size, 32); | |
793 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
794 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
795 | dev_group, 32); | |
796 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
797 | seek_speed, 8); | |
798 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
799 | bandwidth, 8); | |
8a4b83cc | 800 | |
0b86a832 CM |
801 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
802 | { | |
803 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
804 | } | |
805 | ||
e17cade2 | 806 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
807 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
808 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
809 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
810 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
811 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
812 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
813 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 814 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
815 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
816 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
817 | ||
e17cade2 CM |
818 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
819 | { | |
820 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
821 | } | |
822 | ||
823 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
824 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
825 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
826 | stripe_len, 64); | |
827 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
828 | io_align, 32); | |
829 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
830 | io_width, 32); | |
831 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
832 | sector_size, 32); | |
833 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
834 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
835 | num_stripes, 16); | |
321aecc6 CM |
836 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
837 | sub_stripes, 16); | |
0b86a832 CM |
838 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
839 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
840 | ||
841 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
842 | int nr) | |
843 | { | |
844 | unsigned long offset = (unsigned long)c; | |
845 | offset += offsetof(struct btrfs_chunk, stripe); | |
846 | offset += nr * sizeof(struct btrfs_stripe); | |
847 | return (struct btrfs_stripe *)offset; | |
848 | } | |
849 | ||
a443755f CM |
850 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
851 | { | |
852 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
853 | } | |
854 | ||
0b86a832 CM |
855 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
856 | struct btrfs_chunk *c, int nr) | |
857 | { | |
858 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
859 | } | |
860 | ||
861 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
862 | struct btrfs_chunk *c, int nr, | |
863 | u64 val) | |
864 | { | |
865 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
866 | } | |
867 | ||
868 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
869 | struct btrfs_chunk *c, int nr) | |
870 | { | |
871 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
872 | } | |
873 | ||
874 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
875 | struct btrfs_chunk *c, int nr, | |
876 | u64 val) | |
877 | { | |
878 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
879 | } | |
880 | ||
5f39d397 CM |
881 | /* struct btrfs_block_group_item */ |
882 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
883 | used, 64); | |
884 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
885 | used, 64); | |
0b86a832 CM |
886 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
887 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
888 | |
889 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
890 | struct btrfs_block_group_item, chunk_objectid, 64); |
891 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
892 | struct btrfs_block_group_item, flags, 64); | |
893 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
894 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 895 | |
3954401f CM |
896 | /* struct btrfs_inode_ref */ |
897 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
898 | ||
5f39d397 CM |
899 | /* struct btrfs_inode_item */ |
900 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
901 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); | |
902 | BTRFS_SETGET_FUNCS(inode_nblocks, struct btrfs_inode_item, nblocks, 64); | |
903 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); | |
904 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
905 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
906 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
907 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 908 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
5f39d397 CM |
909 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 16); |
910 | BTRFS_SETGET_FUNCS(inode_compat_flags, struct btrfs_inode_item, | |
911 | compat_flags, 16); | |
1e1d2701 | 912 | |
0b86a832 | 913 | static inline struct btrfs_timespec * |
5f39d397 | 914 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 915 | { |
5f39d397 CM |
916 | unsigned long ptr = (unsigned long)inode_item; |
917 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 918 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
919 | } |
920 | ||
0b86a832 | 921 | static inline struct btrfs_timespec * |
5f39d397 | 922 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 923 | { |
5f39d397 CM |
924 | unsigned long ptr = (unsigned long)inode_item; |
925 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 926 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
927 | } |
928 | ||
0b86a832 | 929 | static inline struct btrfs_timespec * |
5f39d397 | 930 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 931 | { |
5f39d397 CM |
932 | unsigned long ptr = (unsigned long)inode_item; |
933 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 934 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
935 | } |
936 | ||
0b86a832 | 937 | static inline struct btrfs_timespec * |
5f39d397 | 938 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 939 | { |
5f39d397 CM |
940 | unsigned long ptr = (unsigned long)inode_item; |
941 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 942 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
943 | } |
944 | ||
0b86a832 CM |
945 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
946 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 947 | |
5f39d397 CM |
948 | /* struct btrfs_extent_item */ |
949 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
74493f7a | 950 | |
0b86a832 | 951 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
952 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
953 | chunk_tree, 64); | |
954 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
955 | chunk_objectid, 64); | |
956 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
957 | chunk_offset, 64); | |
0b86a832 CM |
958 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
959 | ||
e17cade2 CM |
960 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
961 | { | |
962 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
963 | return (u8 *)((unsigned long)dev + ptr); | |
964 | } | |
965 | ||
74493f7a CM |
966 | /* struct btrfs_extent_ref */ |
967 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
968 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
969 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
970 | BTRFS_SETGET_FUNCS(ref_offset, struct btrfs_extent_ref, offset, 64); | |
971 | ||
7bb86316 CM |
972 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
973 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 974 | generation, 64); |
7bb86316 CM |
975 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
976 | objectid, 64); | |
977 | BTRFS_SETGET_STACK_FUNCS(stack_ref_offset, struct btrfs_extent_ref, offset, 64); | |
e20d96d6 | 978 | |
5f39d397 CM |
979 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
980 | refs, 32); | |
e20d96d6 | 981 | |
5f39d397 CM |
982 | /* struct btrfs_node */ |
983 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 984 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 985 | |
5f39d397 | 986 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 987 | { |
5f39d397 CM |
988 | unsigned long ptr; |
989 | ptr = offsetof(struct btrfs_node, ptrs) + | |
990 | sizeof(struct btrfs_key_ptr) * nr; | |
991 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
992 | } |
993 | ||
5f39d397 CM |
994 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
995 | int nr, u64 val) | |
cf27e1ee | 996 | { |
5f39d397 CM |
997 | unsigned long ptr; |
998 | ptr = offsetof(struct btrfs_node, ptrs) + | |
999 | sizeof(struct btrfs_key_ptr) * nr; | |
1000 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1001 | } |
1002 | ||
74493f7a CM |
1003 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1004 | { | |
1005 | unsigned long ptr; | |
1006 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1007 | sizeof(struct btrfs_key_ptr) * nr; | |
1008 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1009 | } | |
1010 | ||
1011 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1012 | int nr, u64 val) | |
1013 | { | |
1014 | unsigned long ptr; | |
1015 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1016 | sizeof(struct btrfs_key_ptr) * nr; | |
1017 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1018 | } | |
1019 | ||
810191ff | 1020 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1021 | { |
5f39d397 CM |
1022 | return offsetof(struct btrfs_node, ptrs) + |
1023 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1024 | } |
1025 | ||
e644d021 CM |
1026 | void btrfs_node_key(struct extent_buffer *eb, |
1027 | struct btrfs_disk_key *disk_key, int nr); | |
1028 | ||
5f39d397 CM |
1029 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1030 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1031 | { |
5f39d397 CM |
1032 | unsigned long ptr; |
1033 | ptr = btrfs_node_key_ptr_offset(nr); | |
1034 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1035 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1036 | } |
1037 | ||
5f39d397 CM |
1038 | /* struct btrfs_item */ |
1039 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1040 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1041 | |
5f39d397 | 1042 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1043 | { |
5f39d397 CM |
1044 | return offsetof(struct btrfs_leaf, items) + |
1045 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1046 | } |
1047 | ||
5f39d397 CM |
1048 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1049 | int nr) | |
0783fcfc | 1050 | { |
5f39d397 | 1051 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1052 | } |
1053 | ||
5f39d397 CM |
1054 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1055 | struct btrfs_item *item) | |
0783fcfc | 1056 | { |
5f39d397 | 1057 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1058 | } |
1059 | ||
5f39d397 | 1060 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1061 | { |
5f39d397 | 1062 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1063 | } |
1064 | ||
5f39d397 | 1065 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1066 | { |
5f39d397 | 1067 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1068 | } |
1069 | ||
5f39d397 | 1070 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1071 | { |
5f39d397 | 1072 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1073 | } |
1074 | ||
5f39d397 CM |
1075 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1076 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1077 | { |
5f39d397 CM |
1078 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1079 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1080 | } |
1081 | ||
5f39d397 CM |
1082 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1083 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1084 | { |
5f39d397 CM |
1085 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1086 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1087 | } |
1088 | ||
5f39d397 | 1089 | /* struct btrfs_dir_item */ |
5103e947 | 1090 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1091 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1092 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
1d4f6404 | 1093 | |
5f39d397 CM |
1094 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1095 | struct btrfs_dir_item *item, | |
1096 | struct btrfs_disk_key *key) | |
1d4f6404 | 1097 | { |
5f39d397 | 1098 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1099 | } |
1100 | ||
5f39d397 CM |
1101 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1102 | struct btrfs_dir_item *item, | |
1103 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1104 | { |
5f39d397 | 1105 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1106 | } |
1107 | ||
5f39d397 CM |
1108 | /* struct btrfs_disk_key */ |
1109 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1110 | objectid, 64); | |
1111 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1112 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1113 | |
e2fa7227 CM |
1114 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1115 | struct btrfs_disk_key *disk) | |
1116 | { | |
1117 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1118 | cpu->type = disk->type; |
e2fa7227 CM |
1119 | cpu->objectid = le64_to_cpu(disk->objectid); |
1120 | } | |
1121 | ||
1122 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1123 | struct btrfs_key *cpu) | |
1124 | { | |
1125 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1126 | disk->type = cpu->type; |
e2fa7227 CM |
1127 | disk->objectid = cpu_to_le64(cpu->objectid); |
1128 | } | |
1129 | ||
5f39d397 CM |
1130 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1131 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1132 | { |
5f39d397 CM |
1133 | struct btrfs_disk_key disk_key; |
1134 | btrfs_node_key(eb, &disk_key, nr); | |
1135 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1136 | } |
1137 | ||
5f39d397 CM |
1138 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1139 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1140 | { |
5f39d397 CM |
1141 | struct btrfs_disk_key disk_key; |
1142 | btrfs_item_key(eb, &disk_key, nr); | |
1143 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1144 | } |
1145 | ||
5f39d397 CM |
1146 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1147 | struct btrfs_dir_item *item, | |
1148 | struct btrfs_key *key) | |
4d775673 | 1149 | { |
5f39d397 CM |
1150 | struct btrfs_disk_key disk_key; |
1151 | btrfs_dir_item_key(eb, item, &disk_key); | |
1152 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1153 | } |
1154 | ||
58176a96 | 1155 | |
5f39d397 | 1156 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1157 | { |
5f39d397 | 1158 | return key->type; |
3768f368 CM |
1159 | } |
1160 | ||
5f39d397 | 1161 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1162 | { |
5f39d397 | 1163 | key->type = val; |
3768f368 CM |
1164 | } |
1165 | ||
5f39d397 | 1166 | /* struct btrfs_header */ |
db94535d | 1167 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1168 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1169 | generation, 64); | |
1170 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1171 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1172 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1173 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1174 | |
63b10fc4 CM |
1175 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1176 | { | |
1177 | return (btrfs_header_flags(eb) & flag) == flag; | |
1178 | } | |
1179 | ||
1180 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1181 | { | |
1182 | u64 flags = btrfs_header_flags(eb); | |
1183 | btrfs_set_header_flags(eb, flags | flag); | |
1184 | return (flags & flag) == flag; | |
1185 | } | |
1186 | ||
1187 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1188 | { | |
1189 | u64 flags = btrfs_header_flags(eb); | |
1190 | btrfs_set_header_flags(eb, flags & ~flag); | |
1191 | return (flags & flag) == flag; | |
1192 | } | |
1193 | ||
5f39d397 | 1194 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1195 | { |
5f39d397 CM |
1196 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1197 | return (u8 *)ptr; | |
0f7d52f4 CM |
1198 | } |
1199 | ||
e17cade2 CM |
1200 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1201 | { | |
1202 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1203 | return (u8 *)ptr; | |
1204 | } | |
1205 | ||
5f39d397 | 1206 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1207 | { |
5f39d397 CM |
1208 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1209 | return (u8 *)ptr; | |
3768f368 CM |
1210 | } |
1211 | ||
5f39d397 | 1212 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1213 | { |
5f39d397 CM |
1214 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1215 | return (u8 *)ptr; | |
3768f368 CM |
1216 | } |
1217 | ||
5f39d397 | 1218 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1219 | { |
5f39d397 | 1220 | return NULL; |
3768f368 CM |
1221 | } |
1222 | ||
5f39d397 | 1223 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1224 | { |
5f39d397 | 1225 | return NULL; |
3768f368 CM |
1226 | } |
1227 | ||
5f39d397 | 1228 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1229 | { |
5f39d397 | 1230 | return NULL; |
3768f368 CM |
1231 | } |
1232 | ||
5f39d397 | 1233 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1234 | { |
5f39d397 | 1235 | return (btrfs_header_level(eb) == 0); |
3768f368 CM |
1236 | } |
1237 | ||
5f39d397 CM |
1238 | /* struct btrfs_root_item */ |
1239 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); | |
db94535d CM |
1240 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1241 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1242 | |
db94535d CM |
1243 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1244 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1245 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1246 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
1247 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 32); | |
db94535d CM |
1248 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1249 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
123abc88 | 1250 | |
5f39d397 | 1251 | /* struct btrfs_super_block */ |
db94535d | 1252 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1253 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1254 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1255 | generation, 64); | |
1256 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1257 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1258 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
db94535d CM |
1259 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1260 | root_level, 8); | |
0b86a832 CM |
1261 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1262 | chunk_root, 64); | |
1263 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
1264 | chunk_root_level, 64); | |
db94535d CM |
1265 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1266 | total_bytes, 64); | |
1267 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1268 | bytes_used, 64); | |
5f39d397 CM |
1269 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1270 | sectorsize, 32); | |
1271 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1272 | nodesize, 32); | |
1273 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1274 | leafsize, 32); | |
87ee04eb CM |
1275 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1276 | stripesize, 32); | |
5f39d397 CM |
1277 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1278 | root_dir_objectid, 64); | |
8a4b83cc CM |
1279 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1280 | num_devices, 64); | |
2e635a27 | 1281 | |
5f39d397 | 1282 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1283 | { |
5f39d397 | 1284 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1285 | } |
1286 | ||
5f39d397 CM |
1287 | /* struct btrfs_file_extent_item */ |
1288 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1289 | |
5f39d397 | 1290 | static inline unsigned long btrfs_file_extent_inline_start(struct |
236454df CM |
1291 | btrfs_file_extent_item *e) |
1292 | { | |
5f39d397 | 1293 | unsigned long offset = (unsigned long)e; |
db94535d | 1294 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1295 | return offset; |
236454df CM |
1296 | } |
1297 | ||
1298 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1299 | { | |
db94535d | 1300 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
1301 | } |
1302 | ||
5f39d397 CM |
1303 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, |
1304 | struct btrfs_item *e) | |
9f5fae2f | 1305 | { |
5f39d397 | 1306 | unsigned long offset; |
db94535d | 1307 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1308 | return btrfs_item_size(eb, e) - offset; |
9f5fae2f CM |
1309 | } |
1310 | ||
db94535d CM |
1311 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
1312 | disk_bytenr, 64); | |
5f39d397 CM |
1313 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
1314 | generation, 64); | |
db94535d CM |
1315 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
1316 | disk_num_bytes, 64); | |
5f39d397 CM |
1317 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
1318 | offset, 64); | |
db94535d CM |
1319 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
1320 | num_bytes, 64); | |
9f5fae2f | 1321 | |
e20d96d6 CM |
1322 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1323 | { | |
1324 | return sb->s_fs_info; | |
1325 | } | |
1326 | ||
58176a96 JB |
1327 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1328 | const char *name, int len) | |
1329 | { | |
1330 | /* if we already have a name just free it */ | |
1331 | if (root->name) | |
1332 | kfree(root->name); | |
1333 | ||
1334 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1335 | if (!root->name) | |
1336 | return -ENOMEM; | |
1337 | ||
1338 | memcpy(root->name, name, len); | |
1339 | root->name[len] ='\0'; | |
1340 | ||
1341 | return 0; | |
1342 | } | |
1343 | ||
db94535d CM |
1344 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) { |
1345 | if (level == 0) | |
1346 | return root->leafsize; | |
1347 | return root->nodesize; | |
1348 | } | |
1349 | ||
4beb1b8b CM |
1350 | /* helper function to cast into the data area of the leaf. */ |
1351 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 1352 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
1353 | btrfs_item_offset_nr(leaf, slot))) |
1354 | ||
1355 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1356 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1357 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 1358 | |
6da6abae CM |
1359 | static inline struct dentry *fdentry(struct file *file) { |
1360 | #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18) | |
1361 | return file->f_dentry; | |
1362 | #else | |
1363 | return file->f_path.dentry; | |
1364 | #endif | |
1365 | } | |
1366 | ||
b18c6685 | 1367 | /* extent-tree.c */ |
be20aa9d CM |
1368 | u32 btrfs_count_snapshots_in_path(struct btrfs_root *root, |
1369 | struct btrfs_path *count_path, | |
a68d5933 | 1370 | u64 expected_owner, u64 first_extent); |
e9d0b13b CM |
1371 | int btrfs_extent_post_op(struct btrfs_trans_handle *trans, |
1372 | struct btrfs_root *root); | |
d1310b2e | 1373 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
5276aeda CM |
1374 | struct btrfs_block_group_cache *btrfs_lookup_block_group(struct |
1375 | btrfs_fs_info *info, | |
db94535d | 1376 | u64 bytenr); |
31f3c99b CM |
1377 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1378 | struct btrfs_block_group_cache | |
be744175 | 1379 | *hint, u64 search_start, |
de428b63 | 1380 | int data, int owner); |
5f39d397 | 1381 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
7bb86316 CM |
1382 | struct btrfs_root *root, |
1383 | u32 blocksize, | |
1384 | u64 root_objectid, | |
1385 | u64 ref_generation, | |
1386 | u64 first_objectid, | |
1387 | int level, | |
1388 | u64 hint, | |
1389 | u64 empty_size); | |
edbd8d4e | 1390 | int btrfs_shrink_extent_tree(struct btrfs_root *root, u64 new_size); |
7bb86316 CM |
1391 | int btrfs_insert_extent_backref(struct btrfs_trans_handle *trans, |
1392 | struct btrfs_root *root, | |
1393 | struct btrfs_path *path, u64 bytenr, | |
1394 | u64 root_objectid, u64 ref_generation, | |
1395 | u64 owner, u64 owner_offset); | |
4d775673 | 1396 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 | 1397 | struct btrfs_root *root, |
98d20f67 CM |
1398 | u64 num_bytes, u64 min_bytes, |
1399 | u64 root_objectid, u64 ref_generation, | |
7bb86316 CM |
1400 | u64 owner, u64 owner_offset, |
1401 | u64 empty_size, u64 hint_byte, | |
ec44a35c | 1402 | u64 search_end, struct btrfs_key *ins, u64 data); |
e6dcd2dc CM |
1403 | int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans, |
1404 | struct btrfs_root *root, | |
1405 | u64 root_objectid, u64 ref_generation, | |
1406 | u64 owner, u64 owner_offset, | |
1407 | struct btrfs_key *ins); | |
1408 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, | |
1409 | struct btrfs_root *root, | |
1410 | u64 num_bytes, u64 min_alloc_size, | |
1411 | u64 empty_size, u64 hint_byte, | |
1412 | u64 search_end, struct btrfs_key *ins, | |
1413 | u64 data); | |
e089f05c | 1414 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
5f39d397 | 1415 | struct extent_buffer *buf); |
e089f05c | 1416 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
7bb86316 CM |
1417 | *root, u64 bytenr, u64 num_bytes, |
1418 | u64 root_objectid, u64 ref_generation, | |
1419 | u64 owner_objectid, u64 owner_offset, int pin); | |
ccd467d6 CM |
1420 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1421 | struct btrfs_root *root, | |
d1310b2e | 1422 | struct extent_io_tree *unpin); |
b18c6685 CM |
1423 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1424 | struct btrfs_root *root, | |
7bb86316 CM |
1425 | u64 bytenr, u64 num_bytes, |
1426 | u64 root_objectid, u64 ref_generation, | |
1427 | u64 owner, u64 owner_offset); | |
9078a3e1 CM |
1428 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1429 | struct btrfs_root *root); | |
1430 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1431 | int btrfs_read_block_groups(struct btrfs_root *root); | |
0b86a832 CM |
1432 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
1433 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 1434 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 1435 | u64 size); |
dee26a9f | 1436 | /* ctree.c */ |
0b86a832 CM |
1437 | int btrfs_previous_item(struct btrfs_root *root, |
1438 | struct btrfs_path *path, u64 min_objectid, | |
1439 | int type); | |
925baedd CM |
1440 | |
1441 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); | |
1442 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 1443 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
1444 | struct btrfs_key *key, int lowest_level, |
1445 | int cache_only, u64 min_trans); | |
1446 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
1447 | struct btrfs_path *path, int cache_only, | |
1448 | u64 min_trans); | |
925baedd | 1449 | |
5f39d397 CM |
1450 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
1451 | struct btrfs_root *root, struct extent_buffer *buf, | |
1452 | struct extent_buffer *parent, int parent_slot, | |
1453 | struct extent_buffer **cow_ret); | |
be20aa9d CM |
1454 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
1455 | struct btrfs_root *root, | |
1456 | struct extent_buffer *buf, | |
1457 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
6567e837 CM |
1458 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1459 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1460 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1461 | struct btrfs_root *root, | |
1462 | struct btrfs_path *path, | |
179e29e4 | 1463 | u32 new_size, int from_end); |
e089f05c CM |
1464 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1465 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1466 | ins_len, int cow); | |
6702ed49 | 1467 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 1468 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
1469 | int start_slot, int cache_only, u64 *last_ret, |
1470 | struct btrfs_key *progress); | |
234b63a0 | 1471 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1472 | struct btrfs_path *btrfs_alloc_path(void); |
1473 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1474 | void btrfs_init_path(struct btrfs_path *p); |
85e21bac CM |
1475 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1476 | struct btrfs_path *path, int slot, int nr); | |
1477 | ||
1478 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, | |
1479 | struct btrfs_root *root, | |
1480 | struct btrfs_path *path) | |
1481 | { | |
1482 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
1483 | } | |
1484 | ||
e089f05c CM |
1485 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1486 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
1487 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
1488 | struct btrfs_root *root, | |
1489 | struct btrfs_path *path, | |
1490 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
1491 | ||
1492 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
1493 | struct btrfs_root *root, | |
1494 | struct btrfs_path *path, | |
1495 | struct btrfs_key *key, | |
1496 | u32 data_size) | |
1497 | { | |
1498 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
1499 | } | |
1500 | ||
234b63a0 | 1501 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 1502 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 1503 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 1504 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1505 | *root); |
dee26a9f | 1506 | /* root-item.c */ |
e089f05c CM |
1507 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1508 | struct btrfs_key *key); | |
1509 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1510 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1511 | *item); | |
1512 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1513 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1514 | *item); | |
1515 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1516 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
1517 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
1518 | u64 *found_objectid); | |
5ce14bbc CM |
1519 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
1520 | struct btrfs_root *latest_root); | |
dee26a9f | 1521 | /* dir-item.c */ |
e089f05c | 1522 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1523 | *root, const char *name, int name_len, u64 dir, |
1524 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1525 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1526 | struct btrfs_root *root, | |
1527 | struct btrfs_path *path, u64 dir, | |
1528 | const char *name, int name_len, | |
1529 | int mod); | |
1530 | struct btrfs_dir_item * | |
1531 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1532 | struct btrfs_root *root, | |
1533 | struct btrfs_path *path, u64 dir, | |
1534 | u64 objectid, const char *name, int name_len, | |
1535 | int mod); | |
1536 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1537 | struct btrfs_path *path, | |
7f5c1516 | 1538 | const char *name, int name_len); |
7e38180e CM |
1539 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1540 | struct btrfs_root *root, | |
1541 | struct btrfs_path *path, | |
1542 | struct btrfs_dir_item *di); | |
5103e947 JB |
1543 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
1544 | struct btrfs_root *root, const char *name, | |
1545 | u16 name_len, const void *data, u16 data_len, | |
1546 | u64 dir); | |
1547 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
1548 | struct btrfs_root *root, | |
1549 | struct btrfs_path *path, u64 dir, | |
1550 | const char *name, u16 name_len, | |
1551 | int mod); | |
dee26a9f | 1552 | /* inode-map.c */ |
9f5fae2f CM |
1553 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1554 | struct btrfs_root *fs_root, | |
1555 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1556 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1557 | ||
dee26a9f | 1558 | /* inode-item.c */ |
3954401f CM |
1559 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
1560 | struct btrfs_root *root, | |
1561 | const char *name, int name_len, | |
1562 | u64 inode_objectid, u64 ref_objectid); | |
1563 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, | |
1564 | struct btrfs_root *root, | |
1565 | const char *name, int name_len, | |
1566 | u64 inode_objectid, u64 ref_objectid); | |
5f39d397 CM |
1567 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
1568 | struct btrfs_root *root, | |
1569 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 1570 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1571 | *root, struct btrfs_path *path, |
1572 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1573 | |
1574 | /* file-item.c */ | |
b18c6685 | 1575 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1576 | struct btrfs_root *root, |
f2eb0a24 | 1577 | u64 objectid, u64 pos, u64 disk_offset, |
db94535d | 1578 | u64 disk_num_bytes, |
f2eb0a24 | 1579 | u64 num_bytes, u64 offset); |
dee26a9f CM |
1580 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1581 | struct btrfs_root *root, | |
1582 | struct btrfs_path *path, u64 objectid, | |
db94535d | 1583 | u64 bytenr, int mod); |
065631f6 CM |
1584 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
1585 | struct btrfs_root *root, struct inode *inode, | |
e6dcd2dc | 1586 | struct btrfs_ordered_sum *sums); |
3edf7d33 CM |
1587 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
1588 | struct bio *bio); | |
b18c6685 CM |
1589 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1590 | struct btrfs_root *root, | |
1591 | struct btrfs_path *path, | |
1592 | u64 objectid, u64 offset, | |
1593 | int cow); | |
1de037a4 CM |
1594 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1595 | struct btrfs_root *root, struct btrfs_path *path, | |
1596 | u64 isize); | |
39279cc3 | 1597 | /* inode.c */ |
f421950f CM |
1598 | int btrfs_writepages(struct address_space *mapping, |
1599 | struct writeback_control *wbc); | |
f46b5a66 CH |
1600 | int btrfs_create_subvol_root(struct btrfs_root *new_root, |
1601 | struct btrfs_trans_handle *trans, u64 new_dirid, | |
1602 | struct btrfs_block_group_cache *block_group); | |
1603 | ||
3b96362c SW |
1604 | void btrfs_invalidate_dcache_root(struct btrfs_root *root, char *name, |
1605 | int namelen); | |
1606 | ||
239b14b3 CM |
1607 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
1608 | size_t size, struct bio *bio); | |
1609 | ||
9069218d CM |
1610 | static inline void dec_i_blocks(struct inode *inode, u64 dec) |
1611 | { | |
1612 | dec = dec >> 9; | |
1613 | if (dec <= inode->i_blocks) | |
1614 | inode->i_blocks -= dec; | |
1615 | else | |
1616 | inode->i_blocks = 0; | |
1617 | } | |
1618 | ||
edbd8d4e CM |
1619 | unsigned long btrfs_force_ra(struct address_space *mapping, |
1620 | struct file_ra_state *ra, struct file *file, | |
1621 | pgoff_t offset, pgoff_t last_index); | |
1832a6d5 CM |
1622 | int btrfs_check_free_space(struct btrfs_root *root, u64 num_required, |
1623 | int for_del); | |
9ebefb18 CM |
1624 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
1625 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 | 1626 | void btrfs_delete_inode(struct inode *inode); |
2da98f00 | 1627 | void btrfs_put_inode(struct inode *inode); |
39279cc3 CM |
1628 | void btrfs_read_locked_inode(struct inode *inode); |
1629 | int btrfs_write_inode(struct inode *inode, int wait); | |
1630 | void btrfs_dirty_inode(struct inode *inode); | |
1631 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
1632 | void btrfs_destroy_inode(struct inode *inode); | |
1633 | int btrfs_init_cachep(void); | |
1634 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 1635 | long btrfs_ioctl_trans_end(struct file *file); |
39279cc3 CM |
1636 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
1637 | struct btrfs_root *root); | |
dc17ff8f CM |
1638 | struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, |
1639 | u64 root_objectid); | |
39279cc3 CM |
1640 | int btrfs_commit_write(struct file *file, struct page *page, |
1641 | unsigned from, unsigned to); | |
a52d9a80 CM |
1642 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
1643 | size_t page_offset, u64 start, u64 end, | |
1644 | int create); | |
1645 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
1646 | struct btrfs_root *root, | |
1647 | struct inode *inode); | |
f46b5a66 CH |
1648 | |
1649 | /* ioctl.c */ | |
1650 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
1651 | ||
39279cc3 | 1652 | /* file.c */ |
a52d9a80 | 1653 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end); |
5f56406a | 1654 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
39279cc3 CM |
1655 | extern struct file_operations btrfs_file_operations; |
1656 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
1657 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 1658 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
6bf13c0c SW |
1659 | int btrfs_release_file(struct inode *inode, struct file *file); |
1660 | ||
6702ed49 CM |
1661 | /* tree-defrag.c */ |
1662 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
1663 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
1664 | |
1665 | /* sysfs.c */ | |
1666 | int btrfs_init_sysfs(void); | |
1667 | void btrfs_exit_sysfs(void); | |
1668 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
1669 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
1670 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
1671 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
1672 | ||
5103e947 JB |
1673 | /* xattr.c */ |
1674 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
1675 | int btrfs_delete_xattrs(struct btrfs_trans_handle *trans, | |
1676 | struct btrfs_root *root, struct inode *inode); | |
edbd8d4e CM |
1677 | /* super.c */ |
1678 | u64 btrfs_parse_size(char *str); | |
edf24abe | 1679 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 1680 | int btrfs_sync_fs(struct super_block *sb, int wait); |
eb60ceac | 1681 | #endif |