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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> |
d1310b2e | 30 | #include "extent_io.h" |
5f39d397 | 31 | #include "extent_map.h" |
8b712842 | 32 | #include "async-thread.h" |
e20d96d6 | 33 | |
e089f05c | 34 | struct btrfs_trans_handle; |
79154b1b | 35 | struct btrfs_transaction; |
35b7e476 CM |
36 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
37 | extern struct kmem_cache *btrfs_transaction_cachep; | |
38 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 39 | extern struct kmem_cache *btrfs_path_cachep; |
e6dcd2dc | 40 | struct btrfs_ordered_sum; |
e089f05c | 41 | |
2a7108ad | 42 | #define BTRFS_MAGIC "_BHRfS_M" |
eb60ceac | 43 | |
33268eaf JB |
44 | #define BTRFS_ACL_NOT_CACHED ((void *)-1) |
45 | ||
6dddcbeb CM |
46 | #ifdef CONFIG_LOCKDEP |
47 | # define BTRFS_MAX_LEVEL 7 | |
48 | #else | |
49 | # define BTRFS_MAX_LEVEL 8 | |
50 | #endif | |
0b86a832 CM |
51 | |
52 | /* holds pointers to all of the tree roots */ | |
6407bf6d | 53 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
54 | |
55 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 56 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 57 | |
0b86a832 CM |
58 | /* |
59 | * chunk tree stores translations from logical -> physical block numbering | |
60 | * the super block points to the chunk tree | |
61 | */ | |
e085def2 | 62 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
63 | |
64 | /* | |
65 | * stores information about which areas of a given device are in use. | |
66 | * one per device. The tree of tree roots points to the device tree | |
67 | */ | |
e085def2 CM |
68 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
69 | ||
70 | /* one per subvolume, storing files and directories */ | |
71 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
72 | ||
73 | /* directory objectid inside the root tree */ | |
74 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 75 | |
d20f7043 CM |
76 | /* holds checksums of all the data extents */ |
77 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
78 | ||
7b128766 JB |
79 | /* orhpan objectid for tracking unlinked/truncated files */ |
80 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
81 | ||
e02119d5 CM |
82 | /* does write ahead logging to speed up fsyncs */ |
83 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
84 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
85 | ||
e4657689 ZY |
86 | /* for space balancing */ |
87 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
88 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
89 | ||
d20f7043 CM |
90 | /* |
91 | * extent checksums all have this objectid | |
92 | * this allows them to share the logging tree | |
93 | * for fsyncs | |
94 | */ | |
95 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
96 | ||
31840ae1 ZY |
97 | /* dummy objectid represents multiple objectids */ |
98 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
99 | ||
0b86a832 | 100 | /* |
6527cdbe | 101 | * All files have objectids in this range. |
0b86a832 | 102 | */ |
f6dbff55 | 103 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 104 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 105 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 106 | |
0b86a832 CM |
107 | |
108 | /* | |
109 | * the device items go into the chunk tree. The key is in the form | |
110 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
111 | */ | |
112 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
113 | ||
e20d96d6 CM |
114 | /* |
115 | * we can actually store much bigger names, but lets not confuse the rest | |
116 | * of linux | |
117 | */ | |
118 | #define BTRFS_NAME_LEN 255 | |
119 | ||
f254e52c CM |
120 | /* 32 bytes in various csum fields */ |
121 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
122 | |
123 | /* csum types */ | |
124 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
125 | ||
126 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
127 | ||
509659cd | 128 | /* four bytes for CRC32 */ |
3954401f | 129 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 130 | |
fabb5681 CM |
131 | #define BTRFS_FT_UNKNOWN 0 |
132 | #define BTRFS_FT_REG_FILE 1 | |
133 | #define BTRFS_FT_DIR 2 | |
134 | #define BTRFS_FT_CHRDEV 3 | |
135 | #define BTRFS_FT_BLKDEV 4 | |
136 | #define BTRFS_FT_FIFO 5 | |
137 | #define BTRFS_FT_SOCK 6 | |
138 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
139 | #define BTRFS_FT_XATTR 8 |
140 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 141 | |
fec577fb CM |
142 | /* |
143 | * the key defines the order in the tree, and so it also defines (optimal) | |
144 | * block layout. objectid corresonds to the inode number. The flags | |
145 | * tells us things about the object, and is a kind of stream selector. | |
146 | * so for a given inode, keys with flags of 1 might refer to the inode | |
147 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
148 | * may point to extents. | |
149 | * | |
150 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
151 | * |
152 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
153 | * in cpu native order. Otherwise they are identical and their sizes | |
154 | * should be the same (ie both packed) | |
fec577fb | 155 | */ |
e2fa7227 CM |
156 | struct btrfs_disk_key { |
157 | __le64 objectid; | |
5f39d397 | 158 | u8 type; |
70b2befd | 159 | __le64 offset; |
e2fa7227 CM |
160 | } __attribute__ ((__packed__)); |
161 | ||
162 | struct btrfs_key { | |
eb60ceac | 163 | u64 objectid; |
5f39d397 | 164 | u8 type; |
70b2befd | 165 | u64 offset; |
eb60ceac CM |
166 | } __attribute__ ((__packed__)); |
167 | ||
0b86a832 CM |
168 | struct btrfs_mapping_tree { |
169 | struct extent_map_tree map_tree; | |
170 | }; | |
171 | ||
e17cade2 | 172 | #define BTRFS_UUID_SIZE 16 |
0b86a832 CM |
173 | struct btrfs_dev_item { |
174 | /* the internal btrfs device id */ | |
175 | __le64 devid; | |
176 | ||
177 | /* size of the device */ | |
178 | __le64 total_bytes; | |
179 | ||
180 | /* bytes used */ | |
181 | __le64 bytes_used; | |
182 | ||
183 | /* optimal io alignment for this device */ | |
184 | __le32 io_align; | |
185 | ||
186 | /* optimal io width for this device */ | |
187 | __le32 io_width; | |
188 | ||
189 | /* minimal io size for this device */ | |
190 | __le32 sector_size; | |
191 | ||
0b86a832 CM |
192 | /* type and info about this device */ |
193 | __le64 type; | |
194 | ||
2b82032c YZ |
195 | /* expected generation for this device */ |
196 | __le64 generation; | |
197 | ||
c3027eb5 CM |
198 | /* |
199 | * starting byte of this partition on the device, | |
200 | * to allowr for stripe alignment in the future | |
201 | */ | |
202 | __le64 start_offset; | |
203 | ||
e17cade2 CM |
204 | /* grouping information for allocation decisions */ |
205 | __le32 dev_group; | |
206 | ||
207 | /* seek speed 0-100 where 100 is fastest */ | |
208 | u8 seek_speed; | |
209 | ||
210 | /* bandwidth 0-100 where 100 is fastest */ | |
211 | u8 bandwidth; | |
212 | ||
0d81ba5d | 213 | /* btrfs generated uuid for this device */ |
e17cade2 | 214 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
215 | |
216 | /* uuid of FS who owns this device */ | |
217 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
218 | } __attribute__ ((__packed__)); |
219 | ||
220 | struct btrfs_stripe { | |
221 | __le64 devid; | |
222 | __le64 offset; | |
e17cade2 | 223 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
224 | } __attribute__ ((__packed__)); |
225 | ||
226 | struct btrfs_chunk { | |
e17cade2 CM |
227 | /* size of this chunk in bytes */ |
228 | __le64 length; | |
229 | ||
230 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 231 | __le64 owner; |
e17cade2 | 232 | |
0b86a832 CM |
233 | __le64 stripe_len; |
234 | __le64 type; | |
235 | ||
236 | /* optimal io alignment for this chunk */ | |
237 | __le32 io_align; | |
238 | ||
239 | /* optimal io width for this chunk */ | |
240 | __le32 io_width; | |
241 | ||
242 | /* minimal io size for this chunk */ | |
243 | __le32 sector_size; | |
244 | ||
245 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
246 | * item in the btree | |
247 | */ | |
248 | __le16 num_stripes; | |
321aecc6 CM |
249 | |
250 | /* sub stripes only matter for raid10 */ | |
251 | __le16 sub_stripes; | |
0b86a832 CM |
252 | struct btrfs_stripe stripe; |
253 | /* additional stripes go here */ | |
254 | } __attribute__ ((__packed__)); | |
255 | ||
256 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) | |
257 | { | |
258 | BUG_ON(num_stripes == 0); | |
259 | return sizeof(struct btrfs_chunk) + | |
260 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
261 | } | |
262 | ||
5f39d397 | 263 | #define BTRFS_FSID_SIZE 16 |
63b10fc4 CM |
264 | #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0) |
265 | ||
fec577fb CM |
266 | /* |
267 | * every tree block (leaf or node) starts with this header. | |
268 | */ | |
bb492bb0 | 269 | struct btrfs_header { |
e17cade2 | 270 | /* these first four must match the super block */ |
f254e52c | 271 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 272 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 273 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 274 | __le64 flags; |
e17cade2 CM |
275 | |
276 | /* allowed to be different from the super from here on down */ | |
277 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 278 | __le64 generation; |
4d775673 | 279 | __le64 owner; |
5f39d397 | 280 | __le32 nritems; |
9a6f11ed | 281 | u8 level; |
eb60ceac CM |
282 | } __attribute__ ((__packed__)); |
283 | ||
5f39d397 | 284 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
285 | sizeof(struct btrfs_header)) / \ |
286 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 287 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 288 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
289 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
290 | sizeof(struct btrfs_item) - \ | |
291 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 292 | |
2b82032c | 293 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
0b86a832 CM |
294 | |
295 | /* | |
296 | * this is a very generous portion of the super block, giving us | |
297 | * room to translate 14 chunks with 3 stripes each. | |
298 | */ | |
299 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 300 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 301 | |
fec577fb CM |
302 | /* |
303 | * the super block basically lists the main trees of the FS | |
304 | * it currently lacks any block count etc etc | |
305 | */ | |
234b63a0 | 306 | struct btrfs_super_block { |
f254e52c | 307 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 308 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 309 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 310 | __le64 bytenr; /* this block number */ |
63b10fc4 | 311 | __le64 flags; |
e17cade2 CM |
312 | |
313 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 314 | __le64 magic; |
3768f368 CM |
315 | __le64 generation; |
316 | __le64 root; | |
0b86a832 | 317 | __le64 chunk_root; |
e02119d5 | 318 | __le64 log_root; |
c3027eb5 CM |
319 | |
320 | /* this will help find the new super based on the log root */ | |
321 | __le64 log_root_transid; | |
db94535d CM |
322 | __le64 total_bytes; |
323 | __le64 bytes_used; | |
2e635a27 | 324 | __le64 root_dir_objectid; |
8a4b83cc | 325 | __le64 num_devices; |
5f39d397 CM |
326 | __le32 sectorsize; |
327 | __le32 nodesize; | |
328 | __le32 leafsize; | |
87ee04eb | 329 | __le32 stripesize; |
0b86a832 | 330 | __le32 sys_chunk_array_size; |
84234f3a | 331 | __le64 chunk_root_generation; |
f2b636e8 JB |
332 | __le64 compat_flags; |
333 | __le64 compat_ro_flags; | |
334 | __le64 incompat_flags; | |
607d432d | 335 | __le16 csum_type; |
db94535d | 336 | u8 root_level; |
0b86a832 | 337 | u8 chunk_root_level; |
e02119d5 | 338 | u8 log_root_level; |
0d81ba5d | 339 | struct btrfs_dev_item dev_item; |
c3027eb5 | 340 | |
7ae9c09d | 341 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 CM |
342 | |
343 | /* future expansion */ | |
344 | __le64 reserved[32]; | |
0b86a832 | 345 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
346 | } __attribute__ ((__packed__)); |
347 | ||
f2b636e8 JB |
348 | /* |
349 | * Compat flags that we support. If any incompat flags are set other than the | |
350 | * ones specified below then we will fail to mount | |
351 | */ | |
352 | #define BTRFS_FEATURE_COMPAT_SUPP 0x0 | |
353 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0x0 | |
354 | #define BTRFS_FEATURE_INCOMPAT_SUPP 0x0 | |
355 | ||
fec577fb | 356 | /* |
62e2749e | 357 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
358 | * the item in the leaf (relative to the start of the data area) |
359 | */ | |
0783fcfc | 360 | struct btrfs_item { |
e2fa7227 | 361 | struct btrfs_disk_key key; |
123abc88 | 362 | __le32 offset; |
5f39d397 | 363 | __le32 size; |
eb60ceac CM |
364 | } __attribute__ ((__packed__)); |
365 | ||
fec577fb CM |
366 | /* |
367 | * leaves have an item area and a data area: | |
368 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
369 | * | |
370 | * The data is separate from the items to get the keys closer together | |
371 | * during searches. | |
372 | */ | |
234b63a0 | 373 | struct btrfs_leaf { |
bb492bb0 | 374 | struct btrfs_header header; |
123abc88 | 375 | struct btrfs_item items[]; |
eb60ceac CM |
376 | } __attribute__ ((__packed__)); |
377 | ||
fec577fb CM |
378 | /* |
379 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
380 | * other blocks | |
381 | */ | |
123abc88 CM |
382 | struct btrfs_key_ptr { |
383 | struct btrfs_disk_key key; | |
384 | __le64 blockptr; | |
74493f7a | 385 | __le64 generation; |
123abc88 CM |
386 | } __attribute__ ((__packed__)); |
387 | ||
234b63a0 | 388 | struct btrfs_node { |
bb492bb0 | 389 | struct btrfs_header header; |
123abc88 | 390 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
391 | } __attribute__ ((__packed__)); |
392 | ||
fec577fb | 393 | /* |
234b63a0 CM |
394 | * btrfs_paths remember the path taken from the root down to the leaf. |
395 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
396 | * to any other levels that are present. |
397 | * | |
398 | * The slots array records the index of the item or block pointer | |
399 | * used while walking the tree. | |
400 | */ | |
234b63a0 | 401 | struct btrfs_path { |
5f39d397 | 402 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 403 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
404 | /* if there is real range locking, this locks field will change */ |
405 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 406 | int reada; |
925baedd CM |
407 | /* keep some upper locks as we walk down */ |
408 | int keep_locks; | |
5cd57b2c | 409 | int skip_locking; |
6702ed49 | 410 | int lowest_level; |
459931ec CM |
411 | |
412 | /* | |
413 | * set by btrfs_split_item, tells search_slot to keep all locks | |
414 | * and to force calls to keep space in the nodes | |
415 | */ | |
416 | int search_for_split; | |
eb60ceac | 417 | }; |
5de08d7d | 418 | |
62e2749e CM |
419 | /* |
420 | * items in the extent btree are used to record the objectid of the | |
421 | * owner of the block and the number of references | |
422 | */ | |
423 | struct btrfs_extent_item { | |
424 | __le32 refs; | |
74493f7a CM |
425 | } __attribute__ ((__packed__)); |
426 | ||
427 | struct btrfs_extent_ref { | |
428 | __le64 root; | |
429 | __le64 generation; | |
430 | __le64 objectid; | |
31840ae1 | 431 | __le32 num_refs; |
62e2749e CM |
432 | } __attribute__ ((__packed__)); |
433 | ||
0b86a832 CM |
434 | /* dev extents record free space on individual devices. The owner |
435 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 436 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
437 | */ |
438 | struct btrfs_dev_extent { | |
e17cade2 CM |
439 | __le64 chunk_tree; |
440 | __le64 chunk_objectid; | |
441 | __le64 chunk_offset; | |
0b86a832 | 442 | __le64 length; |
e17cade2 | 443 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
444 | } __attribute__ ((__packed__)); |
445 | ||
3954401f | 446 | struct btrfs_inode_ref { |
aec7477b | 447 | __le64 index; |
3954401f CM |
448 | __le16 name_len; |
449 | /* name goes here */ | |
450 | } __attribute__ ((__packed__)); | |
451 | ||
0b86a832 | 452 | struct btrfs_timespec { |
f254e52c | 453 | __le64 sec; |
1e1d2701 CM |
454 | __le32 nsec; |
455 | } __attribute__ ((__packed__)); | |
456 | ||
95029d7d | 457 | enum btrfs_compression_type { |
c8b97818 CM |
458 | BTRFS_COMPRESS_NONE = 0, |
459 | BTRFS_COMPRESS_ZLIB = 1, | |
460 | BTRFS_COMPRESS_LAST = 2, | |
95029d7d | 461 | }; |
c8b97818 | 462 | |
1e1d2701 | 463 | struct btrfs_inode_item { |
e02119d5 | 464 | /* nfs style generation number */ |
1e1d2701 | 465 | __le64 generation; |
e02119d5 CM |
466 | /* transid that last touched this inode */ |
467 | __le64 transid; | |
1e1d2701 | 468 | __le64 size; |
a76a3cd4 | 469 | __le64 nbytes; |
31f3c99b | 470 | __le64 block_group; |
1e1d2701 CM |
471 | __le32 nlink; |
472 | __le32 uid; | |
473 | __le32 gid; | |
474 | __le32 mode; | |
0b86a832 | 475 | __le64 rdev; |
f2b636e8 | 476 | __le64 flags; |
c8b97818 | 477 | |
c3027eb5 CM |
478 | /* modification sequence number for NFS */ |
479 | __le64 sequence; | |
480 | ||
481 | /* | |
482 | * a little future expansion, for more than this we can | |
483 | * just grow the inode item and version it | |
484 | */ | |
485 | __le64 reserved[4]; | |
0b86a832 CM |
486 | struct btrfs_timespec atime; |
487 | struct btrfs_timespec ctime; | |
488 | struct btrfs_timespec mtime; | |
489 | struct btrfs_timespec otime; | |
1e1d2701 CM |
490 | } __attribute__ ((__packed__)); |
491 | ||
e02119d5 CM |
492 | struct btrfs_dir_log_item { |
493 | __le64 end; | |
494 | } __attribute__ ((__packed__)); | |
495 | ||
62e2749e | 496 | struct btrfs_dir_item { |
d6e4a428 | 497 | struct btrfs_disk_key location; |
e02119d5 | 498 | __le64 transid; |
5103e947 | 499 | __le16 data_len; |
a8a2ee0c | 500 | __le16 name_len; |
62e2749e CM |
501 | u8 type; |
502 | } __attribute__ ((__packed__)); | |
503 | ||
504 | struct btrfs_root_item { | |
d6e4a428 | 505 | struct btrfs_inode_item inode; |
84234f3a | 506 | __le64 generation; |
d6e4a428 | 507 | __le64 root_dirid; |
db94535d CM |
508 | __le64 bytenr; |
509 | __le64 byte_limit; | |
510 | __le64 bytes_used; | |
80ff3856 | 511 | __le64 last_snapshot; |
f2b636e8 | 512 | __le64 flags; |
62e2749e | 513 | __le32 refs; |
5eda7b5e CM |
514 | struct btrfs_disk_key drop_progress; |
515 | u8 drop_level; | |
db94535d | 516 | u8 level; |
9f5fae2f | 517 | } __attribute__ ((__packed__)); |
62e2749e | 518 | |
0660b5af CM |
519 | /* |
520 | * this is used for both forward and backward root refs | |
521 | */ | |
522 | struct btrfs_root_ref { | |
523 | __le64 dirid; | |
524 | __le64 sequence; | |
525 | __le16 name_len; | |
526 | } __attribute__ ((__packed__)); | |
527 | ||
d899e052 YZ |
528 | #define BTRFS_FILE_EXTENT_INLINE 0 |
529 | #define BTRFS_FILE_EXTENT_REG 1 | |
530 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 531 | |
9f5fae2f | 532 | struct btrfs_file_extent_item { |
c8b97818 CM |
533 | /* |
534 | * transaction id that created this extent | |
535 | */ | |
71951f35 | 536 | __le64 generation; |
c8b97818 CM |
537 | /* |
538 | * max number of bytes to hold this extent in ram | |
539 | * when we split a compressed extent we can't know how big | |
540 | * each of the resulting pieces will be. So, this is | |
541 | * an upper limit on the size of the extent in ram instead of | |
542 | * an exact limit. | |
543 | */ | |
544 | __le64 ram_bytes; | |
545 | ||
546 | /* | |
547 | * 32 bits for the various ways we might encode the data, | |
548 | * including compression and encryption. If any of these | |
549 | * are set to something a given disk format doesn't understand | |
550 | * it is treated like an incompat flag for reading and writing, | |
551 | * but not for stat. | |
552 | */ | |
553 | u8 compression; | |
554 | u8 encryption; | |
555 | __le16 other_encoding; /* spare for later use */ | |
556 | ||
557 | /* are we inline data or a real extent? */ | |
236454df | 558 | u8 type; |
c8b97818 | 559 | |
9f5fae2f CM |
560 | /* |
561 | * disk space consumed by the extent, checksum blocks are included | |
562 | * in these numbers | |
563 | */ | |
db94535d CM |
564 | __le64 disk_bytenr; |
565 | __le64 disk_num_bytes; | |
9f5fae2f | 566 | /* |
dee26a9f | 567 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
568 | * this extent record is for. This allows a file extent to point |
569 | * into the middle of an existing extent on disk, sharing it | |
570 | * between two snapshots (useful if some bytes in the middle of the | |
571 | * extent have changed | |
572 | */ | |
573 | __le64 offset; | |
574 | /* | |
c8b97818 CM |
575 | * the logical number of file blocks (no csums included). This |
576 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 577 | */ |
db94535d | 578 | __le64 num_bytes; |
c8b97818 | 579 | |
9f5fae2f CM |
580 | } __attribute__ ((__packed__)); |
581 | ||
f254e52c | 582 | struct btrfs_csum_item { |
509659cd | 583 | u8 csum; |
f254e52c CM |
584 | } __attribute__ ((__packed__)); |
585 | ||
0b86a832 CM |
586 | /* different types of block groups (and chunks) */ |
587 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
588 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
589 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 590 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 591 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 592 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 593 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
1e2677e0 | 594 | |
9078a3e1 CM |
595 | struct btrfs_block_group_item { |
596 | __le64 used; | |
0b86a832 CM |
597 | __le64 chunk_objectid; |
598 | __le64 flags; | |
9078a3e1 CM |
599 | } __attribute__ ((__packed__)); |
600 | ||
6324fbf3 CM |
601 | struct btrfs_space_info { |
602 | u64 flags; | |
603 | u64 total_bytes; | |
604 | u64 bytes_used; | |
605 | u64 bytes_pinned; | |
e8569813 | 606 | u64 bytes_reserved; |
c146afad | 607 | u64 bytes_readonly; |
6324fbf3 | 608 | int full; |
0ef3e66b | 609 | int force_alloc; |
6324fbf3 | 610 | struct list_head list; |
0f9dd46c JB |
611 | |
612 | /* for block groups in our same type */ | |
613 | struct list_head block_groups; | |
614 | spinlock_t lock; | |
80eb234a | 615 | struct rw_semaphore groups_sem; |
0f9dd46c JB |
616 | }; |
617 | ||
618 | struct btrfs_free_space { | |
619 | struct rb_node bytes_index; | |
620 | struct rb_node offset_index; | |
621 | u64 offset; | |
622 | u64 bytes; | |
6324fbf3 CM |
623 | }; |
624 | ||
9078a3e1 CM |
625 | struct btrfs_block_group_cache { |
626 | struct btrfs_key key; | |
627 | struct btrfs_block_group_item item; | |
c286ac48 | 628 | spinlock_t lock; |
25179201 | 629 | struct mutex alloc_mutex; |
ea6a478e | 630 | struct mutex cache_mutex; |
324ae4df | 631 | u64 pinned; |
e8569813 | 632 | u64 reserved; |
0b86a832 CM |
633 | u64 flags; |
634 | int cached; | |
8f18cf13 | 635 | int ro; |
0f9dd46c JB |
636 | int dirty; |
637 | ||
638 | struct btrfs_space_info *space_info; | |
639 | ||
640 | /* free space cache stuff */ | |
641 | struct rb_root free_space_bytes; | |
642 | struct rb_root free_space_offset; | |
643 | ||
644 | /* block group cache stuff */ | |
645 | struct rb_node cache_node; | |
646 | ||
647 | /* for block groups in the same raid type */ | |
648 | struct list_head list; | |
d2fb3437 YZ |
649 | |
650 | /* usage count */ | |
651 | atomic_t count; | |
9078a3e1 | 652 | }; |
0b86a832 | 653 | |
e4657689 ZY |
654 | struct btrfs_leaf_ref_tree { |
655 | struct rb_root root; | |
656 | struct list_head list; | |
657 | spinlock_t lock; | |
658 | }; | |
659 | ||
0b86a832 | 660 | struct btrfs_device; |
8a4b83cc | 661 | struct btrfs_fs_devices; |
9f5fae2f | 662 | struct btrfs_fs_info { |
5f39d397 | 663 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 664 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
665 | struct btrfs_root *extent_root; |
666 | struct btrfs_root *tree_root; | |
0b86a832 CM |
667 | struct btrfs_root *chunk_root; |
668 | struct btrfs_root *dev_root; | |
3de4586c | 669 | struct btrfs_root *fs_root; |
d20f7043 | 670 | struct btrfs_root *csum_root; |
e02119d5 CM |
671 | |
672 | /* the log root tree is a directory of all the other log roots */ | |
673 | struct btrfs_root *log_root_tree; | |
0f7d52f4 | 674 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 675 | |
0f9dd46c JB |
676 | /* block group cache stuff */ |
677 | spinlock_t block_group_cache_lock; | |
678 | struct rb_root block_group_cache_tree; | |
679 | ||
d1310b2e CM |
680 | struct extent_io_tree pinned_extents; |
681 | struct extent_io_tree pending_del; | |
682 | struct extent_io_tree extent_ins; | |
1a5bc167 | 683 | |
0b86a832 CM |
684 | /* logical->physical extent mapping */ |
685 | struct btrfs_mapping_tree mapping_tree; | |
686 | ||
293ffd5f | 687 | u64 generation; |
15ee9bc7 | 688 | u64 last_trans_committed; |
e02119d5 | 689 | u64 last_trans_new_blockgroup; |
9ca9ee09 | 690 | u64 open_ioctl_trans; |
b6cda9bc | 691 | unsigned long mount_opt; |
c59f8951 | 692 | u64 max_extent; |
6f568d35 | 693 | u64 max_inline; |
8f662a76 | 694 | u64 alloc_start; |
79154b1b | 695 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 696 | wait_queue_head_t transaction_throttle; |
f9295749 | 697 | wait_queue_head_t transaction_wait; |
e02119d5 | 698 | |
771ed689 | 699 | wait_queue_head_t async_submit_wait; |
e02119d5 CM |
700 | wait_queue_head_t tree_log_wait; |
701 | ||
4b52dff6 | 702 | struct btrfs_super_block super_copy; |
a061fc8d | 703 | struct btrfs_super_block super_for_commit; |
0b86a832 | 704 | struct block_device *__bdev; |
e20d96d6 | 705 | struct super_block *sb; |
d98237b3 | 706 | struct inode *btree_inode; |
04160088 | 707 | struct backing_dev_info bdi; |
19c00ddc | 708 | spinlock_t hash_lock; |
79154b1b | 709 | struct mutex trans_mutex; |
e02119d5 | 710 | struct mutex tree_log_mutex; |
a74a4b97 CM |
711 | struct mutex transaction_kthread_mutex; |
712 | struct mutex cleaner_mutex; | |
25179201 JB |
713 | struct mutex extent_ins_mutex; |
714 | struct mutex pinned_mutex; | |
925baedd | 715 | struct mutex chunk_mutex; |
a2135011 | 716 | struct mutex drop_mutex; |
7d9eb12c | 717 | struct mutex volume_mutex; |
1a40e23b | 718 | struct mutex tree_reloc_mutex; |
8fd17795 | 719 | struct list_head trans_list; |
19c00ddc | 720 | struct list_head hashers; |
facda1e7 | 721 | struct list_head dead_roots; |
e02119d5 | 722 | |
cb03c743 | 723 | atomic_t nr_async_submits; |
8c8bee1d | 724 | atomic_t async_submit_draining; |
0986fe9e | 725 | atomic_t nr_async_bios; |
771ed689 | 726 | atomic_t async_delalloc_pages; |
e02119d5 CM |
727 | atomic_t tree_log_writers; |
728 | atomic_t tree_log_commit; | |
729 | unsigned long tree_log_batch; | |
730 | u64 tree_log_transid; | |
ce9adaa5 | 731 | |
3eaa2885 CM |
732 | /* |
733 | * this is used by the balancing code to wait for all the pending | |
734 | * ordered extents | |
735 | */ | |
736 | spinlock_t ordered_extent_lock; | |
737 | struct list_head ordered_extents; | |
ea8c2819 | 738 | struct list_head delalloc_inodes; |
3eaa2885 | 739 | |
8b712842 CM |
740 | /* |
741 | * there is a pool of worker threads for checksumming during writes | |
742 | * and a pool for checksumming after reads. This is because readers | |
743 | * can run with FS locks held, and the writers may be waiting for | |
744 | * those locks. We don't want ordering in the pending list to cause | |
745 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
746 | * |
747 | * A third pool does submit_bio to avoid deadlocking with the other | |
748 | * two | |
8b712842 CM |
749 | */ |
750 | struct btrfs_workers workers; | |
771ed689 | 751 | struct btrfs_workers delalloc_workers; |
8b712842 | 752 | struct btrfs_workers endio_workers; |
d20f7043 | 753 | struct btrfs_workers endio_meta_workers; |
cad321ad | 754 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 755 | struct btrfs_workers endio_write_workers; |
1cc127b5 | 756 | struct btrfs_workers submit_workers; |
247e743c CM |
757 | /* |
758 | * fixup workers take dirty pages that didn't properly go through | |
759 | * the cow mechanism and make them safe to write. It happens | |
760 | * for the sys_munmap function call path | |
761 | */ | |
762 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
763 | struct task_struct *transaction_kthread; |
764 | struct task_struct *cleaner_kthread; | |
4543df7e | 765 | int thread_pool_size; |
8b712842 | 766 | |
1a40e23b | 767 | /* tree relocation relocated fields */ |
1a40e23b ZY |
768 | struct list_head dead_reloc_roots; |
769 | struct btrfs_leaf_ref_tree reloc_ref_tree; | |
e4657689 ZY |
770 | struct btrfs_leaf_ref_tree shared_ref_tree; |
771 | ||
58176a96 JB |
772 | struct kobject super_kobj; |
773 | struct completion kobj_unregister; | |
e66f709b | 774 | int do_barriers; |
facda1e7 | 775 | int closing; |
e02119d5 | 776 | int log_root_recovering; |
a2135011 | 777 | atomic_t throttles; |
ab78c84d | 778 | atomic_t throttle_gen; |
9f5fae2f | 779 | |
324ae4df | 780 | u64 total_pinned; |
0b86a832 CM |
781 | struct list_head dirty_cowonly_roots; |
782 | ||
8a4b83cc | 783 | struct btrfs_fs_devices *fs_devices; |
6324fbf3 | 784 | struct list_head space_info; |
1832a6d5 | 785 | spinlock_t delalloc_lock; |
cee36a03 | 786 | spinlock_t new_trans_lock; |
1832a6d5 | 787 | u64 delalloc_bytes; |
e18e4809 | 788 | u64 last_alloc; |
4529ba49 | 789 | u64 last_data_alloc; |
d18a2c44 | 790 | |
31153d81 YZ |
791 | spinlock_t ref_cache_lock; |
792 | u64 total_ref_cache_size; | |
31153d81 | 793 | |
d18a2c44 CM |
794 | u64 avail_data_alloc_bits; |
795 | u64 avail_metadata_alloc_bits; | |
796 | u64 avail_system_alloc_bits; | |
797 | u64 data_alloc_profile; | |
798 | u64 metadata_alloc_profile; | |
799 | u64 system_alloc_profile; | |
788f20eb CM |
800 | |
801 | void *bdev_holder; | |
324ae4df | 802 | }; |
0b86a832 | 803 | |
9f5fae2f CM |
804 | /* |
805 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 806 | * and for the extent tree extent_root root. |
9f5fae2f | 807 | */ |
f321e491 | 808 | struct btrfs_dirty_root; |
9f5fae2f | 809 | struct btrfs_root { |
5f39d397 | 810 | struct extent_buffer *node; |
925baedd CM |
811 | |
812 | /* the node lock is held while changing the node pointer */ | |
813 | spinlock_t node_lock; | |
814 | ||
5f39d397 | 815 | struct extent_buffer *commit_root; |
31153d81 | 816 | struct btrfs_leaf_ref_tree *ref_tree; |
017e5369 | 817 | struct btrfs_leaf_ref_tree ref_tree_struct; |
f321e491 | 818 | struct btrfs_dirty_root *dirty_root; |
e02119d5 | 819 | struct btrfs_root *log_root; |
1a40e23b | 820 | struct btrfs_root *reloc_root; |
31153d81 | 821 | |
62e2749e CM |
822 | struct btrfs_root_item root_item; |
823 | struct btrfs_key root_key; | |
9f5fae2f | 824 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
825 | struct extent_io_tree dirty_log_pages; |
826 | ||
58176a96 JB |
827 | struct kobject root_kobj; |
828 | struct completion kobj_unregister; | |
a2135011 | 829 | struct mutex objectid_mutex; |
e02119d5 | 830 | struct mutex log_mutex; |
ea8c2819 | 831 | |
0f7d52f4 CM |
832 | u64 objectid; |
833 | u64 last_trans; | |
5f39d397 CM |
834 | |
835 | /* data allocations are done in sectorsize units */ | |
836 | u32 sectorsize; | |
837 | ||
838 | /* node allocations are done in nodesize units */ | |
839 | u32 nodesize; | |
840 | ||
841 | /* leaf allocations are done in leafsize units */ | |
842 | u32 leafsize; | |
843 | ||
87ee04eb CM |
844 | u32 stripesize; |
845 | ||
9f5fae2f | 846 | u32 type; |
1b05da2e CM |
847 | u64 highest_inode; |
848 | u64 last_inode_alloc; | |
9f3a7427 | 849 | int ref_cows; |
0b86a832 | 850 | int track_dirty; |
3f157a2f | 851 | u64 defrag_trans_start; |
6702ed49 | 852 | struct btrfs_key defrag_progress; |
0ef3e66b | 853 | struct btrfs_key defrag_max; |
6702ed49 CM |
854 | int defrag_running; |
855 | int defrag_level; | |
58176a96 | 856 | char *name; |
4313b399 | 857 | int in_sysfs; |
0b86a832 CM |
858 | |
859 | /* the dirty list is only used by non-reference counted roots */ | |
860 | struct list_head dirty_list; | |
7b128766 | 861 | |
bcc63abb Y |
862 | spinlock_t list_lock; |
863 | struct list_head dead_list; | |
7b128766 | 864 | struct list_head orphan_list; |
3394e160 CM |
865 | |
866 | /* | |
867 | * right now this just gets used so that a root has its own devid | |
868 | * for stat. It may be used for more later | |
869 | */ | |
870 | struct super_block anon_super; | |
62e2749e CM |
871 | }; |
872 | ||
1e1d2701 | 873 | /* |
0b86a832 | 874 | |
1e1d2701 CM |
875 | * inode items have the data typically returned from stat and store other |
876 | * info about object characteristics. There is one for every file and dir in | |
877 | * the FS | |
878 | */ | |
9078a3e1 | 879 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af CM |
880 | #define BTRFS_INODE_REF_KEY 12 |
881 | #define BTRFS_XATTR_ITEM_KEY 24 | |
882 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 883 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
884 | |
885 | /* | |
886 | * dir items are the name -> inode pointers in a directory. There is one | |
887 | * for every name in a directory. | |
888 | */ | |
0660b5af CM |
889 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
890 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
891 | #define BTRFS_DIR_ITEM_KEY 84 | |
892 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 893 | /* |
9078a3e1 | 894 | * extent data is for file data |
1e1d2701 | 895 | */ |
0660b5af | 896 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 897 | |
f254e52c | 898 | /* |
d20f7043 CM |
899 | * extent csums are stored in a separate tree and hold csums for |
900 | * an entire extent on disk. | |
f254e52c | 901 | */ |
d20f7043 | 902 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 903 | |
1e1d2701 CM |
904 | /* |
905 | * root items point to tree roots. There are typically in the root | |
906 | * tree used by the super block to find all the other trees | |
907 | */ | |
0660b5af CM |
908 | #define BTRFS_ROOT_ITEM_KEY 132 |
909 | ||
910 | /* | |
911 | * root backrefs tie subvols and snapshots to the directory entries that | |
912 | * reference them | |
913 | */ | |
914 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
915 | ||
916 | /* | |
917 | * root refs make a fast index for listing all of the snapshots and | |
918 | * subvolumes referenced by a given root. They point directly to the | |
919 | * directory item in the root that references the subvol | |
920 | */ | |
921 | #define BTRFS_ROOT_REF_KEY 156 | |
922 | ||
1e1d2701 CM |
923 | /* |
924 | * extent items are in the extent map tree. These record which blocks | |
925 | * are used, and how many references there are to each block | |
926 | */ | |
0660b5af CM |
927 | #define BTRFS_EXTENT_ITEM_KEY 168 |
928 | #define BTRFS_EXTENT_REF_KEY 180 | |
9078a3e1 CM |
929 | |
930 | /* | |
931 | * block groups give us hints into the extent allocation trees. Which | |
932 | * blocks are free etc etc | |
933 | */ | |
0660b5af | 934 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 935 | |
0660b5af CM |
936 | #define BTRFS_DEV_EXTENT_KEY 204 |
937 | #define BTRFS_DEV_ITEM_KEY 216 | |
938 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 939 | |
1e1d2701 CM |
940 | /* |
941 | * string items are for debugging. They just store a short string of | |
942 | * data in the FS | |
943 | */ | |
9078a3e1 CM |
944 | #define BTRFS_STRING_ITEM_KEY 253 |
945 | ||
21ad10cf CM |
946 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
947 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
948 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 949 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 950 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 951 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
b6cda9bc CM |
952 | |
953 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
954 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
955 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
956 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
957 | /* |
958 | * Inode flags | |
959 | */ | |
fdebe2bd Y |
960 | #define BTRFS_INODE_NODATASUM (1 << 0) |
961 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
962 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 963 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 964 | #define BTRFS_INODE_PREALLOC (1 << 4) |
b98b6767 Y |
965 | #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \ |
966 | ~BTRFS_INODE_##flag) | |
967 | #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \ | |
968 | BTRFS_INODE_##flag) | |
969 | #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \ | |
970 | BTRFS_INODE_##flag) | |
5f39d397 CM |
971 | /* some macros to generate set/get funcs for the struct fields. This |
972 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
973 | * one for u8: | |
974 | */ | |
975 | #define le8_to_cpu(v) (v) | |
976 | #define cpu_to_le8(v) (v) | |
977 | #define __le8 u8 | |
978 | ||
979 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
980 | read_extent_buffer(eb, (char *)(result), \ | |
981 | ((unsigned long)(ptr)) + \ | |
982 | offsetof(type, member), \ | |
983 | sizeof(((type *)0)->member))) | |
984 | ||
985 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
986 | write_extent_buffer(eb, (char *)(result), \ | |
987 | ((unsigned long)(ptr)) + \ | |
988 | offsetof(type, member), \ | |
989 | sizeof(((type *)0)->member))) | |
990 | ||
0f82731f | 991 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 992 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
993 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
994 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
995 | #endif | |
5f39d397 CM |
996 | |
997 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
998 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
999 | { \ | |
df68b8a7 DM |
1000 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1001 | u##bits res = le##bits##_to_cpu(p->member); \ | |
1002 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 1003 | return res; \ |
5f39d397 CM |
1004 | } \ |
1005 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1006 | u##bits val) \ | |
1007 | { \ | |
df68b8a7 DM |
1008 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1009 | p->member = cpu_to_le##bits(val); \ | |
1010 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 1011 | } |
9078a3e1 | 1012 | |
5f39d397 CM |
1013 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1014 | static inline u##bits btrfs_##name(type *s) \ | |
1015 | { \ | |
1016 | return le##bits##_to_cpu(s->member); \ | |
1017 | } \ | |
1018 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1019 | { \ | |
1020 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1021 | } |
1022 | ||
0b86a832 CM |
1023 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1024 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1025 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1026 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1027 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1028 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1029 | start_offset, 64); | |
0b86a832 CM |
1030 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1031 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1032 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1033 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1034 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1035 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1036 | |
8a4b83cc CM |
1037 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1038 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1039 | total_bytes, 64); | |
1040 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1041 | bytes_used, 64); | |
1042 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1043 | io_align, 32); | |
1044 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1045 | io_width, 32); | |
1046 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1047 | sector_size, 32); | |
1048 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1049 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1050 | dev_group, 32); | |
1051 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1052 | seek_speed, 8); | |
1053 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1054 | bandwidth, 8); | |
2b82032c YZ |
1055 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1056 | generation, 64); | |
8a4b83cc | 1057 | |
0b86a832 CM |
1058 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1059 | { | |
1060 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1061 | } | |
1062 | ||
2b82032c YZ |
1063 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1064 | { | |
1065 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1066 | } | |
1067 | ||
e17cade2 | 1068 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1069 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1070 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1071 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1072 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1073 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1074 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1075 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1076 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1077 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1078 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1079 | ||
e17cade2 CM |
1080 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1081 | { | |
1082 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1083 | } | |
1084 | ||
1085 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1086 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1087 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1088 | stripe_len, 64); | |
1089 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1090 | io_align, 32); | |
1091 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1092 | io_width, 32); | |
1093 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1094 | sector_size, 32); | |
1095 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1096 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1097 | num_stripes, 16); | |
321aecc6 CM |
1098 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1099 | sub_stripes, 16); | |
0b86a832 CM |
1100 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1101 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1102 | ||
1103 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1104 | int nr) | |
1105 | { | |
1106 | unsigned long offset = (unsigned long)c; | |
1107 | offset += offsetof(struct btrfs_chunk, stripe); | |
1108 | offset += nr * sizeof(struct btrfs_stripe); | |
1109 | return (struct btrfs_stripe *)offset; | |
1110 | } | |
1111 | ||
a443755f CM |
1112 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1113 | { | |
1114 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1115 | } | |
1116 | ||
0b86a832 CM |
1117 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1118 | struct btrfs_chunk *c, int nr) | |
1119 | { | |
1120 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1121 | } | |
1122 | ||
1123 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
1124 | struct btrfs_chunk *c, int nr, | |
1125 | u64 val) | |
1126 | { | |
1127 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
1128 | } | |
1129 | ||
1130 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
1131 | struct btrfs_chunk *c, int nr) | |
1132 | { | |
1133 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1134 | } | |
1135 | ||
1136 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
1137 | struct btrfs_chunk *c, int nr, | |
1138 | u64 val) | |
1139 | { | |
1140 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
1141 | } | |
1142 | ||
5f39d397 CM |
1143 | /* struct btrfs_block_group_item */ |
1144 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1145 | used, 64); | |
1146 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1147 | used, 64); | |
0b86a832 CM |
1148 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1149 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1150 | |
1151 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1152 | struct btrfs_block_group_item, chunk_objectid, 64); |
1153 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1154 | struct btrfs_block_group_item, flags, 64); | |
1155 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1156 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1157 | |
3954401f CM |
1158 | /* struct btrfs_inode_ref */ |
1159 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1160 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1161 | |
5f39d397 CM |
1162 | /* struct btrfs_inode_item */ |
1163 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1164 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1165 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1166 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1167 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1168 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1169 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1170 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1171 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1172 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1173 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1174 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 1175 | |
0b86a832 | 1176 | static inline struct btrfs_timespec * |
5f39d397 | 1177 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1178 | { |
5f39d397 CM |
1179 | unsigned long ptr = (unsigned long)inode_item; |
1180 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1181 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1182 | } |
1183 | ||
0b86a832 | 1184 | static inline struct btrfs_timespec * |
5f39d397 | 1185 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1186 | { |
5f39d397 CM |
1187 | unsigned long ptr = (unsigned long)inode_item; |
1188 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1189 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1190 | } |
1191 | ||
0b86a832 | 1192 | static inline struct btrfs_timespec * |
5f39d397 | 1193 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1194 | { |
5f39d397 CM |
1195 | unsigned long ptr = (unsigned long)inode_item; |
1196 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1197 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1198 | } |
1199 | ||
0b86a832 | 1200 | static inline struct btrfs_timespec * |
5f39d397 | 1201 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1202 | { |
5f39d397 CM |
1203 | unsigned long ptr = (unsigned long)inode_item; |
1204 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 1205 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1206 | } |
1207 | ||
0b86a832 CM |
1208 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1209 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1210 | |
0b86a832 | 1211 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1212 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1213 | chunk_tree, 64); | |
1214 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1215 | chunk_objectid, 64); | |
1216 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1217 | chunk_offset, 64); | |
0b86a832 CM |
1218 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1219 | ||
e17cade2 CM |
1220 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1221 | { | |
1222 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1223 | return (u8 *)((unsigned long)dev + ptr); | |
1224 | } | |
1225 | ||
74493f7a CM |
1226 | /* struct btrfs_extent_ref */ |
1227 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
1228 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
1229 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
31840ae1 | 1230 | BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32); |
74493f7a | 1231 | |
7bb86316 CM |
1232 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
1233 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 1234 | generation, 64); |
7bb86316 CM |
1235 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
1236 | objectid, 64); | |
31840ae1 ZY |
1237 | BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref, |
1238 | num_refs, 32); | |
e20d96d6 | 1239 | |
31840ae1 ZY |
1240 | /* struct btrfs_extent_item */ |
1241 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
5f39d397 CM |
1242 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
1243 | refs, 32); | |
e20d96d6 | 1244 | |
5f39d397 CM |
1245 | /* struct btrfs_node */ |
1246 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1247 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1248 | |
5f39d397 | 1249 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1250 | { |
5f39d397 CM |
1251 | unsigned long ptr; |
1252 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1253 | sizeof(struct btrfs_key_ptr) * nr; | |
1254 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1255 | } |
1256 | ||
5f39d397 CM |
1257 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1258 | int nr, u64 val) | |
cf27e1ee | 1259 | { |
5f39d397 CM |
1260 | unsigned long ptr; |
1261 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1262 | sizeof(struct btrfs_key_ptr) * nr; | |
1263 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1264 | } |
1265 | ||
74493f7a CM |
1266 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1267 | { | |
1268 | unsigned long ptr; | |
1269 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1270 | sizeof(struct btrfs_key_ptr) * nr; | |
1271 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1272 | } | |
1273 | ||
1274 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1275 | int nr, u64 val) | |
1276 | { | |
1277 | unsigned long ptr; | |
1278 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1279 | sizeof(struct btrfs_key_ptr) * nr; | |
1280 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1281 | } | |
1282 | ||
810191ff | 1283 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1284 | { |
5f39d397 CM |
1285 | return offsetof(struct btrfs_node, ptrs) + |
1286 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1287 | } |
1288 | ||
e644d021 CM |
1289 | void btrfs_node_key(struct extent_buffer *eb, |
1290 | struct btrfs_disk_key *disk_key, int nr); | |
1291 | ||
5f39d397 CM |
1292 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1293 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1294 | { |
5f39d397 CM |
1295 | unsigned long ptr; |
1296 | ptr = btrfs_node_key_ptr_offset(nr); | |
1297 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1298 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1299 | } |
1300 | ||
5f39d397 CM |
1301 | /* struct btrfs_item */ |
1302 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1303 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1304 | |
5f39d397 | 1305 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1306 | { |
5f39d397 CM |
1307 | return offsetof(struct btrfs_leaf, items) + |
1308 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1309 | } |
1310 | ||
5f39d397 CM |
1311 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1312 | int nr) | |
0783fcfc | 1313 | { |
5f39d397 | 1314 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1315 | } |
1316 | ||
5f39d397 CM |
1317 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1318 | struct btrfs_item *item) | |
0783fcfc | 1319 | { |
5f39d397 | 1320 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1321 | } |
1322 | ||
5f39d397 | 1323 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1324 | { |
5f39d397 | 1325 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1326 | } |
1327 | ||
5f39d397 | 1328 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1329 | { |
5f39d397 | 1330 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1331 | } |
1332 | ||
5f39d397 | 1333 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1334 | { |
5f39d397 | 1335 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1336 | } |
1337 | ||
5f39d397 CM |
1338 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1339 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1340 | { |
5f39d397 CM |
1341 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1342 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1343 | } |
1344 | ||
5f39d397 CM |
1345 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1346 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1347 | { |
5f39d397 CM |
1348 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1349 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1350 | } |
1351 | ||
e02119d5 CM |
1352 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1353 | ||
0660b5af CM |
1354 | /* |
1355 | * struct btrfs_root_ref | |
1356 | */ | |
1357 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1358 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1359 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1360 | ||
5f39d397 | 1361 | /* struct btrfs_dir_item */ |
5103e947 | 1362 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1363 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1364 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1365 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1366 | |
5f39d397 CM |
1367 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1368 | struct btrfs_dir_item *item, | |
1369 | struct btrfs_disk_key *key) | |
1d4f6404 | 1370 | { |
5f39d397 | 1371 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1372 | } |
1373 | ||
5f39d397 CM |
1374 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1375 | struct btrfs_dir_item *item, | |
1376 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1377 | { |
5f39d397 | 1378 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1379 | } |
1380 | ||
5f39d397 CM |
1381 | /* struct btrfs_disk_key */ |
1382 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1383 | objectid, 64); | |
1384 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1385 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1386 | |
e2fa7227 CM |
1387 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1388 | struct btrfs_disk_key *disk) | |
1389 | { | |
1390 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1391 | cpu->type = disk->type; |
e2fa7227 CM |
1392 | cpu->objectid = le64_to_cpu(disk->objectid); |
1393 | } | |
1394 | ||
1395 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1396 | struct btrfs_key *cpu) | |
1397 | { | |
1398 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1399 | disk->type = cpu->type; |
e2fa7227 CM |
1400 | disk->objectid = cpu_to_le64(cpu->objectid); |
1401 | } | |
1402 | ||
5f39d397 CM |
1403 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1404 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1405 | { |
5f39d397 CM |
1406 | struct btrfs_disk_key disk_key; |
1407 | btrfs_node_key(eb, &disk_key, nr); | |
1408 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1409 | } |
1410 | ||
5f39d397 CM |
1411 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1412 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1413 | { |
5f39d397 CM |
1414 | struct btrfs_disk_key disk_key; |
1415 | btrfs_item_key(eb, &disk_key, nr); | |
1416 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1417 | } |
1418 | ||
5f39d397 CM |
1419 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1420 | struct btrfs_dir_item *item, | |
1421 | struct btrfs_key *key) | |
4d775673 | 1422 | { |
5f39d397 CM |
1423 | struct btrfs_disk_key disk_key; |
1424 | btrfs_dir_item_key(eb, item, &disk_key); | |
1425 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1426 | } |
1427 | ||
58176a96 | 1428 | |
5f39d397 | 1429 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1430 | { |
5f39d397 | 1431 | return key->type; |
3768f368 CM |
1432 | } |
1433 | ||
5f39d397 | 1434 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1435 | { |
5f39d397 | 1436 | key->type = val; |
3768f368 CM |
1437 | } |
1438 | ||
5f39d397 | 1439 | /* struct btrfs_header */ |
db94535d | 1440 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1441 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1442 | generation, 64); | |
1443 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1444 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1445 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1446 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1447 | |
63b10fc4 CM |
1448 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1449 | { | |
1450 | return (btrfs_header_flags(eb) & flag) == flag; | |
1451 | } | |
1452 | ||
1453 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1454 | { | |
1455 | u64 flags = btrfs_header_flags(eb); | |
1456 | btrfs_set_header_flags(eb, flags | flag); | |
1457 | return (flags & flag) == flag; | |
1458 | } | |
1459 | ||
1460 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1461 | { | |
1462 | u64 flags = btrfs_header_flags(eb); | |
1463 | btrfs_set_header_flags(eb, flags & ~flag); | |
1464 | return (flags & flag) == flag; | |
1465 | } | |
1466 | ||
5f39d397 | 1467 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1468 | { |
5f39d397 CM |
1469 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1470 | return (u8 *)ptr; | |
0f7d52f4 CM |
1471 | } |
1472 | ||
e17cade2 CM |
1473 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1474 | { | |
1475 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1476 | return (u8 *)ptr; | |
1477 | } | |
1478 | ||
5f39d397 | 1479 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1480 | { |
5f39d397 CM |
1481 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1482 | return (u8 *)ptr; | |
3768f368 CM |
1483 | } |
1484 | ||
5f39d397 | 1485 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1486 | { |
5f39d397 CM |
1487 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1488 | return (u8 *)ptr; | |
3768f368 CM |
1489 | } |
1490 | ||
5f39d397 | 1491 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1492 | { |
5f39d397 | 1493 | return NULL; |
3768f368 CM |
1494 | } |
1495 | ||
5f39d397 | 1496 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1497 | { |
5f39d397 | 1498 | return NULL; |
3768f368 CM |
1499 | } |
1500 | ||
5f39d397 | 1501 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1502 | { |
5f39d397 | 1503 | return NULL; |
3768f368 CM |
1504 | } |
1505 | ||
5f39d397 | 1506 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1507 | { |
d397712b | 1508 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
1509 | } |
1510 | ||
5f39d397 | 1511 | /* struct btrfs_root_item */ |
84234f3a YZ |
1512 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
1513 | generation, 64); | |
5f39d397 | 1514 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
1515 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1516 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1517 | |
84234f3a YZ |
1518 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
1519 | generation, 64); | |
db94535d CM |
1520 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1521 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1522 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1523 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 1524 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
1525 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1526 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
1527 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
1528 | last_snapshot, 64); | |
123abc88 | 1529 | |
5f39d397 | 1530 | /* struct btrfs_super_block */ |
607d432d | 1531 | |
db94535d | 1532 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1533 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1534 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1535 | generation, 64); | |
1536 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1537 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1538 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
1539 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
1540 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
1541 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1542 | root_level, 8); | |
0b86a832 CM |
1543 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1544 | chunk_root, 64); | |
1545 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1546 | chunk_root_level, 8); |
1547 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1548 | log_root, 64); | |
c3027eb5 CM |
1549 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
1550 | log_root_transid, 64); | |
e02119d5 CM |
1551 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
1552 | log_root_level, 8); | |
db94535d CM |
1553 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1554 | total_bytes, 64); | |
1555 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1556 | bytes_used, 64); | |
5f39d397 CM |
1557 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1558 | sectorsize, 32); | |
1559 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1560 | nodesize, 32); | |
1561 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1562 | leafsize, 32); | |
87ee04eb CM |
1563 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1564 | stripesize, 32); | |
5f39d397 CM |
1565 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1566 | root_dir_objectid, 64); | |
8a4b83cc CM |
1567 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1568 | num_devices, 64); | |
f2b636e8 JB |
1569 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
1570 | compat_flags, 64); | |
1571 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
1572 | compat_flags, 64); | |
1573 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, | |
1574 | incompat_flags, 64); | |
607d432d JB |
1575 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
1576 | csum_type, 16); | |
1577 | ||
1578 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
1579 | { | |
1580 | int t = btrfs_super_csum_type(s); | |
1581 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
1582 | return btrfs_csum_sizes[t]; | |
1583 | } | |
2e635a27 | 1584 | |
5f39d397 | 1585 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1586 | { |
5f39d397 | 1587 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1588 | } |
1589 | ||
5f39d397 CM |
1590 | /* struct btrfs_file_extent_item */ |
1591 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1592 | |
d397712b CM |
1593 | static inline unsigned long |
1594 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 1595 | { |
5f39d397 | 1596 | unsigned long offset = (unsigned long)e; |
db94535d | 1597 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1598 | return offset; |
236454df CM |
1599 | } |
1600 | ||
1601 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1602 | { | |
db94535d | 1603 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
1604 | } |
1605 | ||
db94535d CM |
1606 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
1607 | disk_bytenr, 64); | |
5f39d397 CM |
1608 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
1609 | generation, 64); | |
db94535d CM |
1610 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
1611 | disk_num_bytes, 64); | |
5f39d397 CM |
1612 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
1613 | offset, 64); | |
db94535d CM |
1614 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
1615 | num_bytes, 64); | |
c8b97818 CM |
1616 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
1617 | ram_bytes, 64); | |
1618 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
1619 | compression, 8); | |
1620 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
1621 | encryption, 8); | |
1622 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
1623 | other_encoding, 16); | |
1624 | ||
1625 | /* this returns the number of file bytes represented by the inline item. | |
1626 | * If an item is compressed, this is the uncompressed size | |
1627 | */ | |
1628 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
1629 | struct btrfs_file_extent_item *e) | |
1630 | { | |
1631 | return btrfs_file_extent_ram_bytes(eb, e); | |
1632 | } | |
1633 | ||
1634 | /* | |
1635 | * this returns the number of bytes used by the item on disk, minus the | |
1636 | * size of any extent headers. If a file is compressed on disk, this is | |
1637 | * the compressed size | |
1638 | */ | |
1639 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
1640 | struct btrfs_item *e) | |
1641 | { | |
1642 | unsigned long offset; | |
1643 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
1644 | return btrfs_item_size(eb, e) - offset; | |
1645 | } | |
9f5fae2f | 1646 | |
e20d96d6 CM |
1647 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1648 | { | |
1649 | return sb->s_fs_info; | |
1650 | } | |
1651 | ||
58176a96 JB |
1652 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1653 | const char *name, int len) | |
1654 | { | |
1655 | /* if we already have a name just free it */ | |
d397712b | 1656 | kfree(root->name); |
58176a96 JB |
1657 | |
1658 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1659 | if (!root->name) | |
1660 | return -ENOMEM; | |
1661 | ||
1662 | memcpy(root->name, name, len); | |
d397712b | 1663 | root->name[len] = '\0'; |
58176a96 JB |
1664 | |
1665 | return 0; | |
1666 | } | |
1667 | ||
d397712b CM |
1668 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
1669 | { | |
db94535d CM |
1670 | if (level == 0) |
1671 | return root->leafsize; | |
1672 | return root->nodesize; | |
1673 | } | |
1674 | ||
4beb1b8b CM |
1675 | /* helper function to cast into the data area of the leaf. */ |
1676 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 1677 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
1678 | btrfs_item_offset_nr(leaf, slot))) |
1679 | ||
1680 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1681 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1682 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 1683 | |
2b1f55b0 CM |
1684 | static inline struct dentry *fdentry(struct file *file) |
1685 | { | |
6da6abae | 1686 | return file->f_path.dentry; |
6da6abae CM |
1687 | } |
1688 | ||
b18c6685 | 1689 | /* extent-tree.c */ |
31840ae1 | 1690 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
5b21f2ed ZY |
1691 | int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans, |
1692 | struct btrfs_root *root, u64 bytenr, | |
1693 | u64 num_bytes, u32 *refs); | |
e02119d5 CM |
1694 | int btrfs_update_pinned_extents(struct btrfs_root *root, |
1695 | u64 bytenr, u64 num, int pin); | |
1696 | int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, | |
1697 | struct btrfs_root *root, struct extent_buffer *leaf); | |
80ff3856 | 1698 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
17d217fe | 1699 | struct btrfs_root *root, u64 objectid, u64 bytenr); |
e9d0b13b CM |
1700 | int btrfs_extent_post_op(struct btrfs_trans_handle *trans, |
1701 | struct btrfs_root *root); | |
d1310b2e | 1702 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
d397712b CM |
1703 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
1704 | struct btrfs_fs_info *info, | |
1705 | u64 bytenr); | |
d2fb3437 YZ |
1706 | u64 btrfs_find_block_group(struct btrfs_root *root, |
1707 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 1708 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
7bb86316 | 1709 | struct btrfs_root *root, |
31840ae1 | 1710 | u32 blocksize, u64 parent, |
7bb86316 CM |
1711 | u64 root_objectid, |
1712 | u64 ref_generation, | |
7bb86316 CM |
1713 | int level, |
1714 | u64 hint, | |
1715 | u64 empty_size); | |
65b51a00 CM |
1716 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
1717 | struct btrfs_root *root, | |
1718 | u64 bytenr, u32 blocksize); | |
4d775673 | 1719 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 | 1720 | struct btrfs_root *root, |
31840ae1 | 1721 | u64 num_bytes, u64 parent, u64 min_bytes, |
98d20f67 | 1722 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1723 | u64 owner, u64 empty_size, u64 hint_byte, |
ec44a35c | 1724 | u64 search_end, struct btrfs_key *ins, u64 data); |
e6dcd2dc | 1725 | int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1726 | struct btrfs_root *root, u64 parent, |
e6dcd2dc | 1727 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1728 | u64 owner, struct btrfs_key *ins); |
e02119d5 | 1729 | int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1730 | struct btrfs_root *root, u64 parent, |
e02119d5 | 1731 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1732 | u64 owner, struct btrfs_key *ins); |
e6dcd2dc CM |
1733 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
1734 | struct btrfs_root *root, | |
1735 | u64 num_bytes, u64 min_alloc_size, | |
1736 | u64 empty_size, u64 hint_byte, | |
1737 | u64 search_end, struct btrfs_key *ins, | |
1738 | u64 data); | |
e089f05c | 1739 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
31840ae1 ZY |
1740 | struct extent_buffer *orig_buf, struct extent_buffer *buf, |
1741 | u32 *nr_extents); | |
1742 | int btrfs_cache_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
1743 | struct extent_buffer *buf, u32 nr_extents); | |
1744 | int btrfs_update_ref(struct btrfs_trans_handle *trans, | |
1745 | struct btrfs_root *root, struct extent_buffer *orig_buf, | |
1746 | struct extent_buffer *buf, int start_slot, int nr); | |
1747 | int btrfs_free_extent(struct btrfs_trans_handle *trans, | |
1748 | struct btrfs_root *root, | |
1749 | u64 bytenr, u64 num_bytes, u64 parent, | |
7bb86316 | 1750 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1751 | u64 owner_objectid, int pin); |
65b51a00 | 1752 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
ccd467d6 CM |
1753 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1754 | struct btrfs_root *root, | |
d1310b2e | 1755 | struct extent_io_tree *unpin); |
b18c6685 | 1756 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
1757 | struct btrfs_root *root, |
1758 | u64 bytenr, u64 num_bytes, u64 parent, | |
1759 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1760 | u64 owner_objectid); |
31840ae1 ZY |
1761 | int btrfs_update_extent_ref(struct btrfs_trans_handle *trans, |
1762 | struct btrfs_root *root, u64 bytenr, | |
1763 | u64 orig_parent, u64 parent, | |
1764 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1765 | u64 owner_objectid); |
9078a3e1 CM |
1766 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1767 | struct btrfs_root *root); | |
d2fb3437 | 1768 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
1769 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
1770 | int btrfs_read_block_groups(struct btrfs_root *root); | |
0b86a832 CM |
1771 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
1772 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 1773 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 1774 | u64 size); |
1a40e23b ZY |
1775 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
1776 | struct btrfs_root *root, u64 group_start); | |
1777 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
f82d02d9 YZ |
1778 | int btrfs_free_reloc_root(struct btrfs_trans_handle *trans, |
1779 | struct btrfs_root *root); | |
1a40e23b | 1780 | int btrfs_drop_dead_reloc_roots(struct btrfs_root *root); |
1a40e23b ZY |
1781 | int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle *trans, |
1782 | struct btrfs_root *root, | |
1783 | struct extent_buffer *buf, u64 orig_start); | |
1784 | int btrfs_add_dead_reloc_root(struct btrfs_root *root); | |
1785 | int btrfs_cleanup_reloc_trees(struct btrfs_root *root); | |
17d217fe | 1786 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); |
2b82032c | 1787 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
dee26a9f | 1788 | /* ctree.c */ |
0b86a832 CM |
1789 | int btrfs_previous_item(struct btrfs_root *root, |
1790 | struct btrfs_path *path, u64 min_objectid, | |
1791 | int type); | |
1a40e23b ZY |
1792 | int btrfs_merge_path(struct btrfs_trans_handle *trans, |
1793 | struct btrfs_root *root, | |
1794 | struct btrfs_key *node_keys, | |
1795 | u64 *nodes, int lowest_level); | |
31840ae1 ZY |
1796 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
1797 | struct btrfs_root *root, struct btrfs_path *path, | |
1798 | struct btrfs_key *new_key); | |
925baedd CM |
1799 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
1800 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 1801 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
1802 | struct btrfs_key *key, int lowest_level, |
1803 | int cache_only, u64 min_trans); | |
1804 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 1805 | struct btrfs_key *max_key, |
3f157a2f CM |
1806 | struct btrfs_path *path, int cache_only, |
1807 | u64 min_trans); | |
5f39d397 CM |
1808 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
1809 | struct btrfs_root *root, struct extent_buffer *buf, | |
1810 | struct extent_buffer *parent, int parent_slot, | |
65b51a00 | 1811 | struct extent_buffer **cow_ret, u64 prealloc_dest); |
be20aa9d CM |
1812 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
1813 | struct btrfs_root *root, | |
1814 | struct extent_buffer *buf, | |
1815 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
6567e837 CM |
1816 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1817 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1818 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1819 | struct btrfs_root *root, | |
1820 | struct btrfs_path *path, | |
179e29e4 | 1821 | u32 new_size, int from_end); |
459931ec CM |
1822 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
1823 | struct btrfs_root *root, | |
1824 | struct btrfs_path *path, | |
1825 | struct btrfs_key *new_key, | |
1826 | unsigned long split_offset); | |
e089f05c CM |
1827 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1828 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1829 | ins_len, int cow); | |
6702ed49 | 1830 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 1831 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
1832 | int start_slot, int cache_only, u64 *last_ret, |
1833 | struct btrfs_key *progress); | |
234b63a0 | 1834 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1835 | struct btrfs_path *btrfs_alloc_path(void); |
1836 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1837 | void btrfs_init_path(struct btrfs_path *p); |
85e21bac CM |
1838 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1839 | struct btrfs_path *path, int slot, int nr); | |
323ac95b CM |
1840 | int btrfs_del_leaf(struct btrfs_trans_handle *trans, |
1841 | struct btrfs_root *root, | |
1842 | struct btrfs_path *path, u64 bytenr); | |
85e21bac CM |
1843 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
1844 | struct btrfs_root *root, | |
1845 | struct btrfs_path *path) | |
1846 | { | |
1847 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
1848 | } | |
1849 | ||
e089f05c CM |
1850 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1851 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
f3465ca4 JB |
1852 | int btrfs_insert_some_items(struct btrfs_trans_handle *trans, |
1853 | struct btrfs_root *root, | |
1854 | struct btrfs_path *path, | |
1855 | struct btrfs_key *cpu_key, u32 *data_size, | |
1856 | int nr); | |
9c58309d CM |
1857 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
1858 | struct btrfs_root *root, | |
1859 | struct btrfs_path *path, | |
1860 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
1861 | ||
1862 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
1863 | struct btrfs_root *root, | |
1864 | struct btrfs_path *path, | |
1865 | struct btrfs_key *key, | |
1866 | u32 data_size) | |
1867 | { | |
1868 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
1869 | } | |
1870 | ||
234b63a0 | 1871 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 1872 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 1873 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 1874 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1875 | *root); |
f82d02d9 YZ |
1876 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
1877 | struct btrfs_root *root, | |
1878 | struct extent_buffer *node, | |
1879 | struct extent_buffer *parent); | |
dee26a9f | 1880 | /* root-item.c */ |
ea9e8b11 CM |
1881 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
1882 | struct btrfs_path *path, | |
1883 | u64 root_id, u64 ref_id); | |
0660b5af CM |
1884 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
1885 | struct btrfs_root *tree_root, | |
1886 | u64 root_id, u8 type, u64 ref_id, | |
1887 | u64 dirid, u64 sequence, | |
1888 | const char *name, int name_len); | |
e089f05c CM |
1889 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1890 | struct btrfs_key *key); | |
1891 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1892 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1893 | *item); | |
1894 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1895 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1896 | *item); | |
1897 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1898 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
1899 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
1900 | u64 *found_objectid); | |
5ce14bbc CM |
1901 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
1902 | struct btrfs_root *latest_root); | |
dee26a9f | 1903 | /* dir-item.c */ |
d397712b CM |
1904 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
1905 | struct btrfs_root *root, const char *name, | |
1906 | int name_len, u64 dir, | |
aec7477b | 1907 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
1908 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1909 | struct btrfs_root *root, | |
1910 | struct btrfs_path *path, u64 dir, | |
1911 | const char *name, int name_len, | |
1912 | int mod); | |
1913 | struct btrfs_dir_item * | |
1914 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1915 | struct btrfs_root *root, | |
1916 | struct btrfs_path *path, u64 dir, | |
1917 | u64 objectid, const char *name, int name_len, | |
1918 | int mod); | |
1919 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1920 | struct btrfs_path *path, | |
7f5c1516 | 1921 | const char *name, int name_len); |
7e38180e CM |
1922 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1923 | struct btrfs_root *root, | |
1924 | struct btrfs_path *path, | |
1925 | struct btrfs_dir_item *di); | |
5103e947 JB |
1926 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
1927 | struct btrfs_root *root, const char *name, | |
1928 | u16 name_len, const void *data, u16 data_len, | |
1929 | u64 dir); | |
1930 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
1931 | struct btrfs_root *root, | |
1932 | struct btrfs_path *path, u64 dir, | |
1933 | const char *name, u16 name_len, | |
1934 | int mod); | |
7b128766 JB |
1935 | |
1936 | /* orphan.c */ | |
1937 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
1938 | struct btrfs_root *root, u64 offset); | |
1939 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
1940 | struct btrfs_root *root, u64 offset); | |
1941 | ||
dee26a9f | 1942 | /* inode-map.c */ |
9f5fae2f CM |
1943 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1944 | struct btrfs_root *fs_root, | |
1945 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1946 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1947 | ||
dee26a9f | 1948 | /* inode-item.c */ |
3954401f CM |
1949 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
1950 | struct btrfs_root *root, | |
1951 | const char *name, int name_len, | |
aec7477b | 1952 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
1953 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
1954 | struct btrfs_root *root, | |
1955 | const char *name, int name_len, | |
aec7477b | 1956 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
1957 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
1958 | struct btrfs_root *root, | |
1959 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 1960 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1961 | *root, struct btrfs_path *path, |
1962 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1963 | |
1964 | /* file-item.c */ | |
459931ec CM |
1965 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
1966 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 1967 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 1968 | struct bio *bio, u32 *dst); |
b18c6685 | 1969 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
1970 | struct btrfs_root *root, |
1971 | u64 objectid, u64 pos, | |
1972 | u64 disk_offset, u64 disk_num_bytes, | |
1973 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
1974 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
1975 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1976 | struct btrfs_root *root, | |
1977 | struct btrfs_path *path, u64 objectid, | |
db94535d | 1978 | u64 bytenr, int mod); |
065631f6 | 1979 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 1980 | struct btrfs_root *root, |
e6dcd2dc | 1981 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 1982 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 1983 | struct bio *bio, u64 file_start, int contig); |
c8b97818 CM |
1984 | int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode, |
1985 | u64 start, unsigned long len); | |
b18c6685 CM |
1986 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1987 | struct btrfs_root *root, | |
1988 | struct btrfs_path *path, | |
d20f7043 | 1989 | u64 bytenr, int cow); |
1de037a4 CM |
1990 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1991 | struct btrfs_root *root, struct btrfs_path *path, | |
1992 | u64 isize); | |
17d217fe YZ |
1993 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, |
1994 | u64 end, struct list_head *list); | |
39279cc3 | 1995 | /* inode.c */ |
4881ee5a CM |
1996 | |
1997 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 1998 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
1999 | #define ClearPageChecked ClearPageFsMisc |
2000 | #define SetPageChecked SetPageFsMisc | |
2001 | #define PageChecked PageFsMisc | |
2002 | #endif | |
2003 | ||
3de4586c CM |
2004 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
2005 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
2006 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
2007 | struct btrfs_root *root, | |
2008 | struct inode *dir, struct inode *inode, | |
2009 | const char *name, int name_len); | |
2010 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
2011 | struct inode *parent_inode, struct inode *inode, | |
2012 | const char *name, int name_len, int add_backref, u64 index); | |
2013 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, | |
2014 | struct btrfs_root *root, | |
2015 | struct inode *inode, u64 new_size, | |
2016 | u32 min_type); | |
2017 | ||
ea8c2819 CM |
2018 | int btrfs_start_delalloc_inodes(struct btrfs_root *root); |
2019 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end); | |
f421950f CM |
2020 | int btrfs_writepages(struct address_space *mapping, |
2021 | struct writeback_control *wbc); | |
d2fb3437 YZ |
2022 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
2023 | struct btrfs_root *new_root, struct dentry *dentry, | |
2024 | u64 new_dirid, u64 alloc_hint); | |
239b14b3 | 2025 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 2026 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 2027 | |
edbd8d4e CM |
2028 | unsigned long btrfs_force_ra(struct address_space *mapping, |
2029 | struct file_ra_state *ra, struct file *file, | |
2030 | pgoff_t offset, pgoff_t last_index); | |
1832a6d5 CM |
2031 | int btrfs_check_free_space(struct btrfs_root *root, u64 num_required, |
2032 | int for_del); | |
9ebefb18 CM |
2033 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
2034 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 | 2035 | void btrfs_delete_inode(struct inode *inode); |
2da98f00 | 2036 | void btrfs_put_inode(struct inode *inode); |
39279cc3 CM |
2037 | void btrfs_read_locked_inode(struct inode *inode); |
2038 | int btrfs_write_inode(struct inode *inode, int wait); | |
2039 | void btrfs_dirty_inode(struct inode *inode); | |
2040 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
2041 | void btrfs_destroy_inode(struct inode *inode); | |
2042 | int btrfs_init_cachep(void); | |
2043 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 2044 | long btrfs_ioctl_trans_end(struct file *file); |
5b21f2ed ZY |
2045 | struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, |
2046 | struct btrfs_root *root, int wait); | |
39279cc3 CM |
2047 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
2048 | struct btrfs_root *root); | |
1a54ef8c BR |
2049 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
2050 | struct btrfs_root *root, int *is_new); | |
39279cc3 CM |
2051 | int btrfs_commit_write(struct file *file, struct page *page, |
2052 | unsigned from, unsigned to); | |
a52d9a80 CM |
2053 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
2054 | size_t page_offset, u64 start, u64 end, | |
2055 | int create); | |
2056 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
2057 | struct btrfs_root *root, | |
2058 | struct inode *inode); | |
5b21f2ed ZY |
2059 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
2060 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
2061 | void btrfs_orphan_cleanup(struct btrfs_root *root); | |
9036c102 | 2062 | int btrfs_cont_expand(struct inode *inode, loff_t size); |
f46b5a66 CH |
2063 | |
2064 | /* ioctl.c */ | |
2065 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
2066 | ||
39279cc3 | 2067 | /* file.c */ |
e02119d5 | 2068 | int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync); |
5b21f2ed ZY |
2069 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
2070 | int skip_pinned); | |
5f56406a | 2071 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
39279cc3 CM |
2072 | extern struct file_operations btrfs_file_operations; |
2073 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
2074 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 2075 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
d899e052 YZ |
2076 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
2077 | struct btrfs_root *root, | |
2078 | struct inode *inode, u64 start, u64 end); | |
6bf13c0c SW |
2079 | int btrfs_release_file(struct inode *inode, struct file *file); |
2080 | ||
6702ed49 CM |
2081 | /* tree-defrag.c */ |
2082 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
2083 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
2084 | |
2085 | /* sysfs.c */ | |
2086 | int btrfs_init_sysfs(void); | |
2087 | void btrfs_exit_sysfs(void); | |
2088 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
2089 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
2090 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
2091 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
2092 | ||
5103e947 JB |
2093 | /* xattr.c */ |
2094 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 2095 | |
edbd8d4e CM |
2096 | /* super.c */ |
2097 | u64 btrfs_parse_size(char *str); | |
edf24abe | 2098 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 2099 | int btrfs_sync_fs(struct super_block *sb, int wait); |
33268eaf JB |
2100 | |
2101 | /* acl.c */ | |
2102 | int btrfs_check_acl(struct inode *inode, int mask); | |
2103 | int btrfs_init_acl(struct inode *inode, struct inode *dir); | |
2104 | int btrfs_acl_chmod(struct inode *inode); | |
0f9dd46c JB |
2105 | |
2106 | /* free-space-cache.c */ | |
2107 | int btrfs_add_free_space(struct btrfs_block_group_cache *block_group, | |
2108 | u64 bytenr, u64 size); | |
25179201 JB |
2109 | int btrfs_add_free_space_lock(struct btrfs_block_group_cache *block_group, |
2110 | u64 offset, u64 bytes); | |
0f9dd46c JB |
2111 | int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group, |
2112 | u64 bytenr, u64 size); | |
25179201 JB |
2113 | int btrfs_remove_free_space_lock(struct btrfs_block_group_cache *block_group, |
2114 | u64 offset, u64 bytes); | |
0f9dd46c JB |
2115 | void btrfs_remove_free_space_cache(struct btrfs_block_group_cache |
2116 | *block_group); | |
2117 | struct btrfs_free_space *btrfs_find_free_space(struct btrfs_block_group_cache | |
2118 | *block_group, u64 offset, | |
2119 | u64 bytes); | |
2120 | void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group, | |
2121 | u64 bytes); | |
2122 | u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group); | |
eb60ceac | 2123 | #endif |