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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 */ |
607d432d | 129 | //#define BTRFS_CRC32_SIZE 4 |
3954401f | 130 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 131 | |
fabb5681 CM |
132 | #define BTRFS_FT_UNKNOWN 0 |
133 | #define BTRFS_FT_REG_FILE 1 | |
134 | #define BTRFS_FT_DIR 2 | |
135 | #define BTRFS_FT_CHRDEV 3 | |
136 | #define BTRFS_FT_BLKDEV 4 | |
137 | #define BTRFS_FT_FIFO 5 | |
138 | #define BTRFS_FT_SOCK 6 | |
139 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
140 | #define BTRFS_FT_XATTR 8 |
141 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 142 | |
fec577fb CM |
143 | /* |
144 | * the key defines the order in the tree, and so it also defines (optimal) | |
145 | * block layout. objectid corresonds to the inode number. The flags | |
146 | * tells us things about the object, and is a kind of stream selector. | |
147 | * so for a given inode, keys with flags of 1 might refer to the inode | |
148 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
149 | * may point to extents. | |
150 | * | |
151 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
152 | * |
153 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
154 | * in cpu native order. Otherwise they are identical and their sizes | |
155 | * should be the same (ie both packed) | |
fec577fb | 156 | */ |
e2fa7227 CM |
157 | struct btrfs_disk_key { |
158 | __le64 objectid; | |
5f39d397 | 159 | u8 type; |
70b2befd | 160 | __le64 offset; |
e2fa7227 CM |
161 | } __attribute__ ((__packed__)); |
162 | ||
163 | struct btrfs_key { | |
eb60ceac | 164 | u64 objectid; |
5f39d397 | 165 | u8 type; |
70b2befd | 166 | u64 offset; |
eb60ceac CM |
167 | } __attribute__ ((__packed__)); |
168 | ||
0b86a832 CM |
169 | struct btrfs_mapping_tree { |
170 | struct extent_map_tree map_tree; | |
171 | }; | |
172 | ||
e17cade2 | 173 | #define BTRFS_UUID_SIZE 16 |
0b86a832 CM |
174 | struct btrfs_dev_item { |
175 | /* the internal btrfs device id */ | |
176 | __le64 devid; | |
177 | ||
178 | /* size of the device */ | |
179 | __le64 total_bytes; | |
180 | ||
181 | /* bytes used */ | |
182 | __le64 bytes_used; | |
183 | ||
184 | /* optimal io alignment for this device */ | |
185 | __le32 io_align; | |
186 | ||
187 | /* optimal io width for this device */ | |
188 | __le32 io_width; | |
189 | ||
190 | /* minimal io size for this device */ | |
191 | __le32 sector_size; | |
192 | ||
0b86a832 CM |
193 | /* type and info about this device */ |
194 | __le64 type; | |
195 | ||
2b82032c YZ |
196 | /* expected generation for this device */ |
197 | __le64 generation; | |
198 | ||
c3027eb5 CM |
199 | /* |
200 | * starting byte of this partition on the device, | |
201 | * to allowr for stripe alignment in the future | |
202 | */ | |
203 | __le64 start_offset; | |
204 | ||
e17cade2 CM |
205 | /* grouping information for allocation decisions */ |
206 | __le32 dev_group; | |
207 | ||
208 | /* seek speed 0-100 where 100 is fastest */ | |
209 | u8 seek_speed; | |
210 | ||
211 | /* bandwidth 0-100 where 100 is fastest */ | |
212 | u8 bandwidth; | |
213 | ||
0d81ba5d | 214 | /* btrfs generated uuid for this device */ |
e17cade2 | 215 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
216 | |
217 | /* uuid of FS who owns this device */ | |
218 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
219 | } __attribute__ ((__packed__)); |
220 | ||
221 | struct btrfs_stripe { | |
222 | __le64 devid; | |
223 | __le64 offset; | |
e17cade2 | 224 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
225 | } __attribute__ ((__packed__)); |
226 | ||
227 | struct btrfs_chunk { | |
e17cade2 CM |
228 | /* size of this chunk in bytes */ |
229 | __le64 length; | |
230 | ||
231 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 232 | __le64 owner; |
e17cade2 | 233 | |
0b86a832 CM |
234 | __le64 stripe_len; |
235 | __le64 type; | |
236 | ||
237 | /* optimal io alignment for this chunk */ | |
238 | __le32 io_align; | |
239 | ||
240 | /* optimal io width for this chunk */ | |
241 | __le32 io_width; | |
242 | ||
243 | /* minimal io size for this chunk */ | |
244 | __le32 sector_size; | |
245 | ||
246 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
247 | * item in the btree | |
248 | */ | |
249 | __le16 num_stripes; | |
321aecc6 CM |
250 | |
251 | /* sub stripes only matter for raid10 */ | |
252 | __le16 sub_stripes; | |
0b86a832 CM |
253 | struct btrfs_stripe stripe; |
254 | /* additional stripes go here */ | |
255 | } __attribute__ ((__packed__)); | |
256 | ||
257 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) | |
258 | { | |
259 | BUG_ON(num_stripes == 0); | |
260 | return sizeof(struct btrfs_chunk) + | |
261 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
262 | } | |
263 | ||
5f39d397 | 264 | #define BTRFS_FSID_SIZE 16 |
63b10fc4 CM |
265 | #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0) |
266 | ||
fec577fb CM |
267 | /* |
268 | * every tree block (leaf or node) starts with this header. | |
269 | */ | |
bb492bb0 | 270 | struct btrfs_header { |
e17cade2 | 271 | /* these first four must match the super block */ |
f254e52c | 272 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 273 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 274 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 275 | __le64 flags; |
e17cade2 CM |
276 | |
277 | /* allowed to be different from the super from here on down */ | |
278 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 279 | __le64 generation; |
4d775673 | 280 | __le64 owner; |
5f39d397 | 281 | __le32 nritems; |
9a6f11ed | 282 | u8 level; |
eb60ceac CM |
283 | } __attribute__ ((__packed__)); |
284 | ||
5f39d397 | 285 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
123abc88 | 286 | sizeof(struct btrfs_header)) / \ |
74493f7a | 287 | sizeof(struct btrfs_key_ptr)) |
123abc88 | 288 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 289 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
290 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
291 | sizeof(struct btrfs_item) - \ | |
292 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 293 | |
2b82032c | 294 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
0b86a832 CM |
295 | |
296 | /* | |
297 | * this is a very generous portion of the super block, giving us | |
298 | * room to translate 14 chunks with 3 stripes each. | |
299 | */ | |
300 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 301 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 302 | |
fec577fb CM |
303 | /* |
304 | * the super block basically lists the main trees of the FS | |
305 | * it currently lacks any block count etc etc | |
306 | */ | |
234b63a0 | 307 | struct btrfs_super_block { |
f254e52c | 308 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 309 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 310 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 311 | __le64 bytenr; /* this block number */ |
63b10fc4 | 312 | __le64 flags; |
e17cade2 CM |
313 | |
314 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 315 | __le64 magic; |
3768f368 CM |
316 | __le64 generation; |
317 | __le64 root; | |
0b86a832 | 318 | __le64 chunk_root; |
e02119d5 | 319 | __le64 log_root; |
c3027eb5 CM |
320 | |
321 | /* this will help find the new super based on the log root */ | |
322 | __le64 log_root_transid; | |
db94535d CM |
323 | __le64 total_bytes; |
324 | __le64 bytes_used; | |
2e635a27 | 325 | __le64 root_dir_objectid; |
8a4b83cc | 326 | __le64 num_devices; |
5f39d397 CM |
327 | __le32 sectorsize; |
328 | __le32 nodesize; | |
329 | __le32 leafsize; | |
87ee04eb | 330 | __le32 stripesize; |
0b86a832 | 331 | __le32 sys_chunk_array_size; |
84234f3a | 332 | __le64 chunk_root_generation; |
f2b636e8 JB |
333 | __le64 compat_flags; |
334 | __le64 compat_ro_flags; | |
335 | __le64 incompat_flags; | |
607d432d | 336 | __le16 csum_type; |
db94535d | 337 | u8 root_level; |
0b86a832 | 338 | u8 chunk_root_level; |
e02119d5 | 339 | u8 log_root_level; |
0d81ba5d | 340 | struct btrfs_dev_item dev_item; |
c3027eb5 | 341 | |
7ae9c09d | 342 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 CM |
343 | |
344 | /* future expansion */ | |
345 | __le64 reserved[32]; | |
0b86a832 | 346 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
347 | } __attribute__ ((__packed__)); |
348 | ||
f2b636e8 JB |
349 | /* |
350 | * Compat flags that we support. If any incompat flags are set other than the | |
351 | * ones specified below then we will fail to mount | |
352 | */ | |
353 | #define BTRFS_FEATURE_COMPAT_SUPP 0x0 | |
354 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0x0 | |
355 | #define BTRFS_FEATURE_INCOMPAT_SUPP 0x0 | |
356 | ||
fec577fb | 357 | /* |
62e2749e | 358 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
359 | * the item in the leaf (relative to the start of the data area) |
360 | */ | |
0783fcfc | 361 | struct btrfs_item { |
e2fa7227 | 362 | struct btrfs_disk_key key; |
123abc88 | 363 | __le32 offset; |
5f39d397 | 364 | __le32 size; |
eb60ceac CM |
365 | } __attribute__ ((__packed__)); |
366 | ||
fec577fb CM |
367 | /* |
368 | * leaves have an item area and a data area: | |
369 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
370 | * | |
371 | * The data is separate from the items to get the keys closer together | |
372 | * during searches. | |
373 | */ | |
234b63a0 | 374 | struct btrfs_leaf { |
bb492bb0 | 375 | struct btrfs_header header; |
123abc88 | 376 | struct btrfs_item items[]; |
eb60ceac CM |
377 | } __attribute__ ((__packed__)); |
378 | ||
fec577fb CM |
379 | /* |
380 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
381 | * other blocks | |
382 | */ | |
123abc88 CM |
383 | struct btrfs_key_ptr { |
384 | struct btrfs_disk_key key; | |
385 | __le64 blockptr; | |
74493f7a | 386 | __le64 generation; |
123abc88 CM |
387 | } __attribute__ ((__packed__)); |
388 | ||
234b63a0 | 389 | struct btrfs_node { |
bb492bb0 | 390 | struct btrfs_header header; |
123abc88 | 391 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
392 | } __attribute__ ((__packed__)); |
393 | ||
fec577fb | 394 | /* |
234b63a0 CM |
395 | * btrfs_paths remember the path taken from the root down to the leaf. |
396 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
397 | * to any other levels that are present. |
398 | * | |
399 | * The slots array records the index of the item or block pointer | |
400 | * used while walking the tree. | |
401 | */ | |
234b63a0 | 402 | struct btrfs_path { |
5f39d397 | 403 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 404 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
405 | /* if there is real range locking, this locks field will change */ |
406 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 407 | int reada; |
925baedd CM |
408 | /* keep some upper locks as we walk down */ |
409 | int keep_locks; | |
5cd57b2c | 410 | int skip_locking; |
6702ed49 | 411 | int lowest_level; |
459931ec CM |
412 | |
413 | /* | |
414 | * set by btrfs_split_item, tells search_slot to keep all locks | |
415 | * and to force calls to keep space in the nodes | |
416 | */ | |
417 | int search_for_split; | |
eb60ceac | 418 | }; |
5de08d7d | 419 | |
62e2749e CM |
420 | /* |
421 | * items in the extent btree are used to record the objectid of the | |
422 | * owner of the block and the number of references | |
423 | */ | |
424 | struct btrfs_extent_item { | |
425 | __le32 refs; | |
74493f7a CM |
426 | } __attribute__ ((__packed__)); |
427 | ||
428 | struct btrfs_extent_ref { | |
429 | __le64 root; | |
430 | __le64 generation; | |
431 | __le64 objectid; | |
31840ae1 | 432 | __le32 num_refs; |
62e2749e CM |
433 | } __attribute__ ((__packed__)); |
434 | ||
0b86a832 CM |
435 | /* dev extents record free space on individual devices. The owner |
436 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 437 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
438 | */ |
439 | struct btrfs_dev_extent { | |
e17cade2 CM |
440 | __le64 chunk_tree; |
441 | __le64 chunk_objectid; | |
442 | __le64 chunk_offset; | |
0b86a832 | 443 | __le64 length; |
e17cade2 | 444 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
445 | } __attribute__ ((__packed__)); |
446 | ||
3954401f | 447 | struct btrfs_inode_ref { |
aec7477b | 448 | __le64 index; |
3954401f CM |
449 | __le16 name_len; |
450 | /* name goes here */ | |
451 | } __attribute__ ((__packed__)); | |
452 | ||
0b86a832 | 453 | struct btrfs_timespec { |
f254e52c | 454 | __le64 sec; |
1e1d2701 CM |
455 | __le32 nsec; |
456 | } __attribute__ ((__packed__)); | |
457 | ||
c8b97818 CM |
458 | typedef enum { |
459 | BTRFS_COMPRESS_NONE = 0, | |
460 | BTRFS_COMPRESS_ZLIB = 1, | |
461 | BTRFS_COMPRESS_LAST = 2, | |
462 | } btrfs_compression_type; | |
463 | ||
464 | /* we don't understand any encryption methods right now */ | |
465 | typedef enum { | |
466 | BTRFS_ENCRYPTION_NONE = 0, | |
467 | BTRFS_ENCRYPTION_LAST = 1, | |
468 | } btrfs_encryption_type; | |
469 | ||
1e1d2701 | 470 | struct btrfs_inode_item { |
e02119d5 | 471 | /* nfs style generation number */ |
1e1d2701 | 472 | __le64 generation; |
e02119d5 CM |
473 | /* transid that last touched this inode */ |
474 | __le64 transid; | |
1e1d2701 | 475 | __le64 size; |
a76a3cd4 | 476 | __le64 nbytes; |
31f3c99b | 477 | __le64 block_group; |
1e1d2701 CM |
478 | __le32 nlink; |
479 | __le32 uid; | |
480 | __le32 gid; | |
481 | __le32 mode; | |
0b86a832 | 482 | __le64 rdev; |
f2b636e8 | 483 | __le64 flags; |
c8b97818 | 484 | |
c3027eb5 CM |
485 | /* modification sequence number for NFS */ |
486 | __le64 sequence; | |
487 | ||
488 | /* | |
489 | * a little future expansion, for more than this we can | |
490 | * just grow the inode item and version it | |
491 | */ | |
492 | __le64 reserved[4]; | |
0b86a832 CM |
493 | struct btrfs_timespec atime; |
494 | struct btrfs_timespec ctime; | |
495 | struct btrfs_timespec mtime; | |
496 | struct btrfs_timespec otime; | |
1e1d2701 CM |
497 | } __attribute__ ((__packed__)); |
498 | ||
e02119d5 CM |
499 | struct btrfs_dir_log_item { |
500 | __le64 end; | |
501 | } __attribute__ ((__packed__)); | |
502 | ||
62e2749e | 503 | struct btrfs_dir_item { |
d6e4a428 | 504 | struct btrfs_disk_key location; |
e02119d5 | 505 | __le64 transid; |
5103e947 | 506 | __le16 data_len; |
a8a2ee0c | 507 | __le16 name_len; |
62e2749e CM |
508 | u8 type; |
509 | } __attribute__ ((__packed__)); | |
510 | ||
511 | struct btrfs_root_item { | |
d6e4a428 | 512 | struct btrfs_inode_item inode; |
84234f3a | 513 | __le64 generation; |
d6e4a428 | 514 | __le64 root_dirid; |
db94535d CM |
515 | __le64 bytenr; |
516 | __le64 byte_limit; | |
517 | __le64 bytes_used; | |
80ff3856 | 518 | __le64 last_snapshot; |
f2b636e8 | 519 | __le64 flags; |
62e2749e | 520 | __le32 refs; |
5eda7b5e CM |
521 | struct btrfs_disk_key drop_progress; |
522 | u8 drop_level; | |
db94535d | 523 | u8 level; |
9f5fae2f | 524 | } __attribute__ ((__packed__)); |
62e2749e | 525 | |
0660b5af CM |
526 | /* |
527 | * this is used for both forward and backward root refs | |
528 | */ | |
529 | struct btrfs_root_ref { | |
530 | __le64 dirid; | |
531 | __le64 sequence; | |
532 | __le16 name_len; | |
533 | } __attribute__ ((__packed__)); | |
534 | ||
d899e052 YZ |
535 | #define BTRFS_FILE_EXTENT_INLINE 0 |
536 | #define BTRFS_FILE_EXTENT_REG 1 | |
537 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 538 | |
9f5fae2f | 539 | struct btrfs_file_extent_item { |
c8b97818 CM |
540 | /* |
541 | * transaction id that created this extent | |
542 | */ | |
71951f35 | 543 | __le64 generation; |
c8b97818 CM |
544 | /* |
545 | * max number of bytes to hold this extent in ram | |
546 | * when we split a compressed extent we can't know how big | |
547 | * each of the resulting pieces will be. So, this is | |
548 | * an upper limit on the size of the extent in ram instead of | |
549 | * an exact limit. | |
550 | */ | |
551 | __le64 ram_bytes; | |
552 | ||
553 | /* | |
554 | * 32 bits for the various ways we might encode the data, | |
555 | * including compression and encryption. If any of these | |
556 | * are set to something a given disk format doesn't understand | |
557 | * it is treated like an incompat flag for reading and writing, | |
558 | * but not for stat. | |
559 | */ | |
560 | u8 compression; | |
561 | u8 encryption; | |
562 | __le16 other_encoding; /* spare for later use */ | |
563 | ||
564 | /* are we inline data or a real extent? */ | |
236454df | 565 | u8 type; |
c8b97818 | 566 | |
9f5fae2f CM |
567 | /* |
568 | * disk space consumed by the extent, checksum blocks are included | |
569 | * in these numbers | |
570 | */ | |
db94535d CM |
571 | __le64 disk_bytenr; |
572 | __le64 disk_num_bytes; | |
9f5fae2f | 573 | /* |
dee26a9f | 574 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
575 | * this extent record is for. This allows a file extent to point |
576 | * into the middle of an existing extent on disk, sharing it | |
577 | * between two snapshots (useful if some bytes in the middle of the | |
578 | * extent have changed | |
579 | */ | |
580 | __le64 offset; | |
581 | /* | |
c8b97818 CM |
582 | * the logical number of file blocks (no csums included). This |
583 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 584 | */ |
db94535d | 585 | __le64 num_bytes; |
c8b97818 | 586 | |
9f5fae2f CM |
587 | } __attribute__ ((__packed__)); |
588 | ||
f254e52c | 589 | struct btrfs_csum_item { |
509659cd | 590 | u8 csum; |
f254e52c CM |
591 | } __attribute__ ((__packed__)); |
592 | ||
0b86a832 CM |
593 | /* different types of block groups (and chunks) */ |
594 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
595 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
596 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 597 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 598 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 599 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 600 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
1e2677e0 | 601 | |
9078a3e1 CM |
602 | struct btrfs_block_group_item { |
603 | __le64 used; | |
0b86a832 CM |
604 | __le64 chunk_objectid; |
605 | __le64 flags; | |
9078a3e1 CM |
606 | } __attribute__ ((__packed__)); |
607 | ||
6324fbf3 CM |
608 | struct btrfs_space_info { |
609 | u64 flags; | |
610 | u64 total_bytes; | |
611 | u64 bytes_used; | |
612 | u64 bytes_pinned; | |
e8569813 | 613 | u64 bytes_reserved; |
c146afad | 614 | u64 bytes_readonly; |
6324fbf3 | 615 | int full; |
0ef3e66b | 616 | int force_alloc; |
6324fbf3 | 617 | struct list_head list; |
0f9dd46c JB |
618 | |
619 | /* for block groups in our same type */ | |
620 | struct list_head block_groups; | |
621 | spinlock_t lock; | |
80eb234a | 622 | struct rw_semaphore groups_sem; |
0f9dd46c JB |
623 | }; |
624 | ||
625 | struct btrfs_free_space { | |
626 | struct rb_node bytes_index; | |
627 | struct rb_node offset_index; | |
628 | u64 offset; | |
629 | u64 bytes; | |
6324fbf3 CM |
630 | }; |
631 | ||
9078a3e1 CM |
632 | struct btrfs_block_group_cache { |
633 | struct btrfs_key key; | |
634 | struct btrfs_block_group_item item; | |
c286ac48 | 635 | spinlock_t lock; |
25179201 | 636 | struct mutex alloc_mutex; |
ea6a478e | 637 | struct mutex cache_mutex; |
324ae4df | 638 | u64 pinned; |
e8569813 | 639 | u64 reserved; |
0b86a832 CM |
640 | u64 flags; |
641 | int cached; | |
8f18cf13 | 642 | int ro; |
0f9dd46c JB |
643 | int dirty; |
644 | ||
645 | struct btrfs_space_info *space_info; | |
646 | ||
647 | /* free space cache stuff */ | |
648 | struct rb_root free_space_bytes; | |
649 | struct rb_root free_space_offset; | |
650 | ||
651 | /* block group cache stuff */ | |
652 | struct rb_node cache_node; | |
653 | ||
654 | /* for block groups in the same raid type */ | |
655 | struct list_head list; | |
9078a3e1 | 656 | }; |
0b86a832 | 657 | |
e4657689 ZY |
658 | struct btrfs_leaf_ref_tree { |
659 | struct rb_root root; | |
660 | struct list_head list; | |
661 | spinlock_t lock; | |
662 | }; | |
663 | ||
0b86a832 | 664 | struct btrfs_device; |
8a4b83cc | 665 | struct btrfs_fs_devices; |
9f5fae2f | 666 | struct btrfs_fs_info { |
5f39d397 | 667 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 668 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
669 | struct btrfs_root *extent_root; |
670 | struct btrfs_root *tree_root; | |
0b86a832 CM |
671 | struct btrfs_root *chunk_root; |
672 | struct btrfs_root *dev_root; | |
3de4586c | 673 | struct btrfs_root *fs_root; |
d20f7043 | 674 | struct btrfs_root *csum_root; |
e02119d5 CM |
675 | |
676 | /* the log root tree is a directory of all the other log roots */ | |
677 | struct btrfs_root *log_root_tree; | |
0f7d52f4 | 678 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 679 | |
0f9dd46c JB |
680 | /* block group cache stuff */ |
681 | spinlock_t block_group_cache_lock; | |
682 | struct rb_root block_group_cache_tree; | |
683 | ||
d1310b2e CM |
684 | struct extent_io_tree pinned_extents; |
685 | struct extent_io_tree pending_del; | |
686 | struct extent_io_tree extent_ins; | |
1a5bc167 | 687 | |
0b86a832 CM |
688 | /* logical->physical extent mapping */ |
689 | struct btrfs_mapping_tree mapping_tree; | |
690 | ||
293ffd5f | 691 | u64 generation; |
15ee9bc7 | 692 | u64 last_trans_committed; |
e02119d5 | 693 | u64 last_trans_new_blockgroup; |
9ca9ee09 | 694 | u64 open_ioctl_trans; |
b6cda9bc | 695 | unsigned long mount_opt; |
c59f8951 | 696 | u64 max_extent; |
6f568d35 | 697 | u64 max_inline; |
8f662a76 | 698 | u64 alloc_start; |
79154b1b | 699 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 700 | wait_queue_head_t transaction_throttle; |
f9295749 | 701 | wait_queue_head_t transaction_wait; |
e02119d5 | 702 | |
771ed689 | 703 | wait_queue_head_t async_submit_wait; |
e02119d5 CM |
704 | wait_queue_head_t tree_log_wait; |
705 | ||
4b52dff6 | 706 | struct btrfs_super_block super_copy; |
a061fc8d | 707 | struct btrfs_super_block super_for_commit; |
0b86a832 | 708 | struct block_device *__bdev; |
e20d96d6 | 709 | struct super_block *sb; |
d98237b3 | 710 | struct inode *btree_inode; |
04160088 | 711 | struct backing_dev_info bdi; |
19c00ddc | 712 | spinlock_t hash_lock; |
79154b1b | 713 | struct mutex trans_mutex; |
e02119d5 | 714 | struct mutex tree_log_mutex; |
a74a4b97 CM |
715 | struct mutex transaction_kthread_mutex; |
716 | struct mutex cleaner_mutex; | |
25179201 JB |
717 | struct mutex extent_ins_mutex; |
718 | struct mutex pinned_mutex; | |
925baedd | 719 | struct mutex chunk_mutex; |
a2135011 | 720 | struct mutex drop_mutex; |
7d9eb12c | 721 | struct mutex volume_mutex; |
1a40e23b | 722 | struct mutex tree_reloc_mutex; |
8fd17795 | 723 | struct list_head trans_list; |
19c00ddc | 724 | struct list_head hashers; |
facda1e7 | 725 | struct list_head dead_roots; |
e02119d5 | 726 | |
cb03c743 | 727 | atomic_t nr_async_submits; |
8c8bee1d | 728 | atomic_t async_submit_draining; |
0986fe9e | 729 | atomic_t nr_async_bios; |
771ed689 | 730 | atomic_t async_delalloc_pages; |
e02119d5 CM |
731 | atomic_t tree_log_writers; |
732 | atomic_t tree_log_commit; | |
733 | unsigned long tree_log_batch; | |
734 | u64 tree_log_transid; | |
ce9adaa5 | 735 | |
3eaa2885 CM |
736 | /* |
737 | * this is used by the balancing code to wait for all the pending | |
738 | * ordered extents | |
739 | */ | |
740 | spinlock_t ordered_extent_lock; | |
741 | struct list_head ordered_extents; | |
ea8c2819 | 742 | struct list_head delalloc_inodes; |
3eaa2885 | 743 | |
8b712842 CM |
744 | /* |
745 | * there is a pool of worker threads for checksumming during writes | |
746 | * and a pool for checksumming after reads. This is because readers | |
747 | * can run with FS locks held, and the writers may be waiting for | |
748 | * those locks. We don't want ordering in the pending list to cause | |
749 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
750 | * |
751 | * A third pool does submit_bio to avoid deadlocking with the other | |
752 | * two | |
8b712842 CM |
753 | */ |
754 | struct btrfs_workers workers; | |
771ed689 | 755 | struct btrfs_workers delalloc_workers; |
8b712842 | 756 | struct btrfs_workers endio_workers; |
d20f7043 | 757 | struct btrfs_workers endio_meta_workers; |
e6dcd2dc | 758 | struct btrfs_workers endio_write_workers; |
1cc127b5 | 759 | struct btrfs_workers submit_workers; |
247e743c CM |
760 | /* |
761 | * fixup workers take dirty pages that didn't properly go through | |
762 | * the cow mechanism and make them safe to write. It happens | |
763 | * for the sys_munmap function call path | |
764 | */ | |
765 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
766 | struct task_struct *transaction_kthread; |
767 | struct task_struct *cleaner_kthread; | |
4543df7e | 768 | int thread_pool_size; |
8b712842 | 769 | |
1a40e23b | 770 | /* tree relocation relocated fields */ |
1a40e23b ZY |
771 | struct list_head dead_reloc_roots; |
772 | struct btrfs_leaf_ref_tree reloc_ref_tree; | |
e4657689 ZY |
773 | struct btrfs_leaf_ref_tree shared_ref_tree; |
774 | ||
58176a96 JB |
775 | struct kobject super_kobj; |
776 | struct completion kobj_unregister; | |
e66f709b | 777 | int do_barriers; |
facda1e7 | 778 | int closing; |
e02119d5 | 779 | int log_root_recovering; |
a2135011 | 780 | atomic_t throttles; |
ab78c84d | 781 | atomic_t throttle_gen; |
9f5fae2f | 782 | |
324ae4df | 783 | u64 total_pinned; |
0b86a832 CM |
784 | struct list_head dirty_cowonly_roots; |
785 | ||
8a4b83cc | 786 | struct btrfs_fs_devices *fs_devices; |
6324fbf3 | 787 | struct list_head space_info; |
1832a6d5 | 788 | spinlock_t delalloc_lock; |
cee36a03 | 789 | spinlock_t new_trans_lock; |
1832a6d5 | 790 | u64 delalloc_bytes; |
e18e4809 | 791 | u64 last_alloc; |
4529ba49 | 792 | u64 last_data_alloc; |
d18a2c44 | 793 | |
31153d81 YZ |
794 | spinlock_t ref_cache_lock; |
795 | u64 total_ref_cache_size; | |
31153d81 | 796 | |
d18a2c44 CM |
797 | u64 avail_data_alloc_bits; |
798 | u64 avail_metadata_alloc_bits; | |
799 | u64 avail_system_alloc_bits; | |
800 | u64 data_alloc_profile; | |
801 | u64 metadata_alloc_profile; | |
802 | u64 system_alloc_profile; | |
788f20eb CM |
803 | |
804 | void *bdev_holder; | |
324ae4df | 805 | }; |
0b86a832 | 806 | |
9f5fae2f CM |
807 | /* |
808 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 809 | * and for the extent tree extent_root root. |
9f5fae2f | 810 | */ |
f321e491 | 811 | struct btrfs_dirty_root; |
9f5fae2f | 812 | struct btrfs_root { |
5f39d397 | 813 | struct extent_buffer *node; |
925baedd CM |
814 | |
815 | /* the node lock is held while changing the node pointer */ | |
816 | spinlock_t node_lock; | |
817 | ||
5f39d397 | 818 | struct extent_buffer *commit_root; |
31153d81 | 819 | struct btrfs_leaf_ref_tree *ref_tree; |
017e5369 | 820 | struct btrfs_leaf_ref_tree ref_tree_struct; |
f321e491 | 821 | struct btrfs_dirty_root *dirty_root; |
e02119d5 | 822 | struct btrfs_root *log_root; |
1a40e23b | 823 | struct btrfs_root *reloc_root; |
31153d81 | 824 | |
62e2749e CM |
825 | struct btrfs_root_item root_item; |
826 | struct btrfs_key root_key; | |
9f5fae2f | 827 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
828 | struct extent_io_tree dirty_log_pages; |
829 | ||
58176a96 JB |
830 | struct kobject root_kobj; |
831 | struct completion kobj_unregister; | |
a2135011 | 832 | struct mutex objectid_mutex; |
e02119d5 | 833 | struct mutex log_mutex; |
ea8c2819 | 834 | |
0f7d52f4 CM |
835 | u64 objectid; |
836 | u64 last_trans; | |
5f39d397 CM |
837 | |
838 | /* data allocations are done in sectorsize units */ | |
839 | u32 sectorsize; | |
840 | ||
841 | /* node allocations are done in nodesize units */ | |
842 | u32 nodesize; | |
843 | ||
844 | /* leaf allocations are done in leafsize units */ | |
845 | u32 leafsize; | |
846 | ||
87ee04eb CM |
847 | u32 stripesize; |
848 | ||
9f5fae2f | 849 | u32 type; |
1b05da2e CM |
850 | u64 highest_inode; |
851 | u64 last_inode_alloc; | |
9f3a7427 | 852 | int ref_cows; |
0b86a832 | 853 | int track_dirty; |
3f157a2f | 854 | u64 defrag_trans_start; |
6702ed49 | 855 | struct btrfs_key defrag_progress; |
0ef3e66b | 856 | struct btrfs_key defrag_max; |
6702ed49 CM |
857 | int defrag_running; |
858 | int defrag_level; | |
58176a96 | 859 | char *name; |
4313b399 | 860 | int in_sysfs; |
0b86a832 CM |
861 | |
862 | /* the dirty list is only used by non-reference counted roots */ | |
863 | struct list_head dirty_list; | |
7b128766 | 864 | |
bcc63abb Y |
865 | spinlock_t list_lock; |
866 | struct list_head dead_list; | |
7b128766 | 867 | struct list_head orphan_list; |
3394e160 CM |
868 | |
869 | /* | |
870 | * right now this just gets used so that a root has its own devid | |
871 | * for stat. It may be used for more later | |
872 | */ | |
873 | struct super_block anon_super; | |
62e2749e CM |
874 | }; |
875 | ||
1e1d2701 | 876 | /* |
0b86a832 | 877 | |
1e1d2701 CM |
878 | * inode items have the data typically returned from stat and store other |
879 | * info about object characteristics. There is one for every file and dir in | |
880 | * the FS | |
881 | */ | |
9078a3e1 | 882 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af CM |
883 | #define BTRFS_INODE_REF_KEY 12 |
884 | #define BTRFS_XATTR_ITEM_KEY 24 | |
885 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 886 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
887 | |
888 | /* | |
889 | * dir items are the name -> inode pointers in a directory. There is one | |
890 | * for every name in a directory. | |
891 | */ | |
0660b5af CM |
892 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
893 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
894 | #define BTRFS_DIR_ITEM_KEY 84 | |
895 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 896 | /* |
9078a3e1 | 897 | * extent data is for file data |
1e1d2701 | 898 | */ |
0660b5af | 899 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 900 | |
f254e52c | 901 | /* |
d20f7043 CM |
902 | * extent csums are stored in a separate tree and hold csums for |
903 | * an entire extent on disk. | |
f254e52c | 904 | */ |
d20f7043 | 905 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 906 | |
1e1d2701 CM |
907 | /* |
908 | * root items point to tree roots. There are typically in the root | |
909 | * tree used by the super block to find all the other trees | |
910 | */ | |
0660b5af CM |
911 | #define BTRFS_ROOT_ITEM_KEY 132 |
912 | ||
913 | /* | |
914 | * root backrefs tie subvols and snapshots to the directory entries that | |
915 | * reference them | |
916 | */ | |
917 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
918 | ||
919 | /* | |
920 | * root refs make a fast index for listing all of the snapshots and | |
921 | * subvolumes referenced by a given root. They point directly to the | |
922 | * directory item in the root that references the subvol | |
923 | */ | |
924 | #define BTRFS_ROOT_REF_KEY 156 | |
925 | ||
1e1d2701 CM |
926 | /* |
927 | * extent items are in the extent map tree. These record which blocks | |
928 | * are used, and how many references there are to each block | |
929 | */ | |
0660b5af CM |
930 | #define BTRFS_EXTENT_ITEM_KEY 168 |
931 | #define BTRFS_EXTENT_REF_KEY 180 | |
9078a3e1 CM |
932 | |
933 | /* | |
934 | * block groups give us hints into the extent allocation trees. Which | |
935 | * blocks are free etc etc | |
936 | */ | |
0660b5af | 937 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 938 | |
0660b5af CM |
939 | #define BTRFS_DEV_EXTENT_KEY 204 |
940 | #define BTRFS_DEV_ITEM_KEY 216 | |
941 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 942 | |
1e1d2701 CM |
943 | /* |
944 | * string items are for debugging. They just store a short string of | |
945 | * data in the FS | |
946 | */ | |
9078a3e1 CM |
947 | #define BTRFS_STRING_ITEM_KEY 253 |
948 | ||
21ad10cf CM |
949 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
950 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
951 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 952 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 953 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 954 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
b6cda9bc CM |
955 | |
956 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
957 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
958 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
959 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
960 | /* |
961 | * Inode flags | |
962 | */ | |
fdebe2bd Y |
963 | #define BTRFS_INODE_NODATASUM (1 << 0) |
964 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
965 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 966 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 967 | #define BTRFS_INODE_PREALLOC (1 << 4) |
b98b6767 Y |
968 | #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \ |
969 | ~BTRFS_INODE_##flag) | |
970 | #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \ | |
971 | BTRFS_INODE_##flag) | |
972 | #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \ | |
973 | BTRFS_INODE_##flag) | |
5f39d397 CM |
974 | /* some macros to generate set/get funcs for the struct fields. This |
975 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
976 | * one for u8: | |
977 | */ | |
978 | #define le8_to_cpu(v) (v) | |
979 | #define cpu_to_le8(v) (v) | |
980 | #define __le8 u8 | |
981 | ||
982 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
983 | read_extent_buffer(eb, (char *)(result), \ | |
984 | ((unsigned long)(ptr)) + \ | |
985 | offsetof(type, member), \ | |
986 | sizeof(((type *)0)->member))) | |
987 | ||
988 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
989 | write_extent_buffer(eb, (char *)(result), \ | |
990 | ((unsigned long)(ptr)) + \ | |
991 | offsetof(type, member), \ | |
992 | sizeof(((type *)0)->member))) | |
993 | ||
0f82731f | 994 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 995 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
996 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
997 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
998 | #endif | |
5f39d397 CM |
999 | |
1000 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1001 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1002 | { \ | |
df68b8a7 DM |
1003 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1004 | u##bits res = le##bits##_to_cpu(p->member); \ | |
1005 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 1006 | return res; \ |
5f39d397 CM |
1007 | } \ |
1008 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1009 | u##bits val) \ | |
1010 | { \ | |
df68b8a7 DM |
1011 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1012 | p->member = cpu_to_le##bits(val); \ | |
1013 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 1014 | } |
9078a3e1 | 1015 | |
5f39d397 CM |
1016 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1017 | static inline u##bits btrfs_##name(type *s) \ | |
1018 | { \ | |
1019 | return le##bits##_to_cpu(s->member); \ | |
1020 | } \ | |
1021 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1022 | { \ | |
1023 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1024 | } |
1025 | ||
0b86a832 CM |
1026 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1027 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1028 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1029 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1030 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1031 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1032 | start_offset, 64); | |
0b86a832 CM |
1033 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1034 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1035 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1036 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1037 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1038 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1039 | |
8a4b83cc CM |
1040 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1041 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1042 | total_bytes, 64); | |
1043 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1044 | bytes_used, 64); | |
1045 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1046 | io_align, 32); | |
1047 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1048 | io_width, 32); | |
1049 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1050 | sector_size, 32); | |
1051 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1052 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1053 | dev_group, 32); | |
1054 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1055 | seek_speed, 8); | |
1056 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1057 | bandwidth, 8); | |
2b82032c YZ |
1058 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1059 | generation, 64); | |
8a4b83cc | 1060 | |
0b86a832 CM |
1061 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1062 | { | |
1063 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1064 | } | |
1065 | ||
2b82032c YZ |
1066 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1067 | { | |
1068 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1069 | } | |
1070 | ||
e17cade2 | 1071 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1072 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1073 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1074 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1075 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1076 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1077 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1078 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1079 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1080 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1081 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1082 | ||
e17cade2 CM |
1083 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1084 | { | |
1085 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1086 | } | |
1087 | ||
1088 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1089 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1090 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1091 | stripe_len, 64); | |
1092 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1093 | io_align, 32); | |
1094 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1095 | io_width, 32); | |
1096 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1097 | sector_size, 32); | |
1098 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1099 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1100 | num_stripes, 16); | |
321aecc6 CM |
1101 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1102 | sub_stripes, 16); | |
0b86a832 CM |
1103 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1104 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1105 | ||
1106 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1107 | int nr) | |
1108 | { | |
1109 | unsigned long offset = (unsigned long)c; | |
1110 | offset += offsetof(struct btrfs_chunk, stripe); | |
1111 | offset += nr * sizeof(struct btrfs_stripe); | |
1112 | return (struct btrfs_stripe *)offset; | |
1113 | } | |
1114 | ||
a443755f CM |
1115 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1116 | { | |
1117 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1118 | } | |
1119 | ||
0b86a832 CM |
1120 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1121 | struct btrfs_chunk *c, int nr) | |
1122 | { | |
1123 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1124 | } | |
1125 | ||
1126 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
1127 | struct btrfs_chunk *c, int nr, | |
1128 | u64 val) | |
1129 | { | |
1130 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
1131 | } | |
1132 | ||
1133 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
1134 | struct btrfs_chunk *c, int nr) | |
1135 | { | |
1136 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1137 | } | |
1138 | ||
1139 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
1140 | struct btrfs_chunk *c, int nr, | |
1141 | u64 val) | |
1142 | { | |
1143 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
1144 | } | |
1145 | ||
5f39d397 CM |
1146 | /* struct btrfs_block_group_item */ |
1147 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1148 | used, 64); | |
1149 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1150 | used, 64); | |
0b86a832 CM |
1151 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1152 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1153 | |
1154 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1155 | struct btrfs_block_group_item, chunk_objectid, 64); |
1156 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1157 | struct btrfs_block_group_item, flags, 64); | |
1158 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1159 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1160 | |
3954401f CM |
1161 | /* struct btrfs_inode_ref */ |
1162 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1163 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1164 | |
5f39d397 CM |
1165 | /* struct btrfs_inode_item */ |
1166 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1167 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1168 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1169 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1170 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1171 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1172 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1173 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1174 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1175 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1176 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1177 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 1178 | |
0b86a832 | 1179 | static inline struct btrfs_timespec * |
5f39d397 | 1180 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1181 | { |
5f39d397 CM |
1182 | unsigned long ptr = (unsigned long)inode_item; |
1183 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1184 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1185 | } |
1186 | ||
0b86a832 | 1187 | static inline struct btrfs_timespec * |
5f39d397 | 1188 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1189 | { |
5f39d397 CM |
1190 | unsigned long ptr = (unsigned long)inode_item; |
1191 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1192 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1193 | } |
1194 | ||
0b86a832 | 1195 | static inline struct btrfs_timespec * |
5f39d397 | 1196 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1197 | { |
5f39d397 CM |
1198 | unsigned long ptr = (unsigned long)inode_item; |
1199 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1200 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1201 | } |
1202 | ||
0b86a832 | 1203 | static inline struct btrfs_timespec * |
5f39d397 | 1204 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1205 | { |
5f39d397 CM |
1206 | unsigned long ptr = (unsigned long)inode_item; |
1207 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 1208 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1209 | } |
1210 | ||
0b86a832 CM |
1211 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1212 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1213 | |
0b86a832 | 1214 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1215 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1216 | chunk_tree, 64); | |
1217 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1218 | chunk_objectid, 64); | |
1219 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1220 | chunk_offset, 64); | |
0b86a832 CM |
1221 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1222 | ||
e17cade2 CM |
1223 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1224 | { | |
1225 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1226 | return (u8 *)((unsigned long)dev + ptr); | |
1227 | } | |
1228 | ||
74493f7a CM |
1229 | /* struct btrfs_extent_ref */ |
1230 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
1231 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
1232 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
31840ae1 | 1233 | BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32); |
74493f7a | 1234 | |
7bb86316 CM |
1235 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
1236 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 1237 | generation, 64); |
7bb86316 CM |
1238 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
1239 | objectid, 64); | |
31840ae1 ZY |
1240 | BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref, |
1241 | num_refs, 32); | |
e20d96d6 | 1242 | |
31840ae1 ZY |
1243 | /* struct btrfs_extent_item */ |
1244 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
5f39d397 CM |
1245 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
1246 | refs, 32); | |
e20d96d6 | 1247 | |
5f39d397 CM |
1248 | /* struct btrfs_node */ |
1249 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1250 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1251 | |
5f39d397 | 1252 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1253 | { |
5f39d397 CM |
1254 | unsigned long ptr; |
1255 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1256 | sizeof(struct btrfs_key_ptr) * nr; | |
1257 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1258 | } |
1259 | ||
5f39d397 CM |
1260 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1261 | int nr, u64 val) | |
cf27e1ee | 1262 | { |
5f39d397 CM |
1263 | unsigned long ptr; |
1264 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1265 | sizeof(struct btrfs_key_ptr) * nr; | |
1266 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1267 | } |
1268 | ||
74493f7a CM |
1269 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1270 | { | |
1271 | unsigned long ptr; | |
1272 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1273 | sizeof(struct btrfs_key_ptr) * nr; | |
1274 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1275 | } | |
1276 | ||
1277 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1278 | int nr, u64 val) | |
1279 | { | |
1280 | unsigned long ptr; | |
1281 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1282 | sizeof(struct btrfs_key_ptr) * nr; | |
1283 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1284 | } | |
1285 | ||
810191ff | 1286 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1287 | { |
5f39d397 CM |
1288 | return offsetof(struct btrfs_node, ptrs) + |
1289 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1290 | } |
1291 | ||
e644d021 CM |
1292 | void btrfs_node_key(struct extent_buffer *eb, |
1293 | struct btrfs_disk_key *disk_key, int nr); | |
1294 | ||
5f39d397 CM |
1295 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1296 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1297 | { |
5f39d397 CM |
1298 | unsigned long ptr; |
1299 | ptr = btrfs_node_key_ptr_offset(nr); | |
1300 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1301 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1302 | } |
1303 | ||
5f39d397 CM |
1304 | /* struct btrfs_item */ |
1305 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1306 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1307 | |
5f39d397 | 1308 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1309 | { |
5f39d397 CM |
1310 | return offsetof(struct btrfs_leaf, items) + |
1311 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1312 | } |
1313 | ||
5f39d397 CM |
1314 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1315 | int nr) | |
0783fcfc | 1316 | { |
5f39d397 | 1317 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1318 | } |
1319 | ||
5f39d397 CM |
1320 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1321 | struct btrfs_item *item) | |
0783fcfc | 1322 | { |
5f39d397 | 1323 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1324 | } |
1325 | ||
5f39d397 | 1326 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1327 | { |
5f39d397 | 1328 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1329 | } |
1330 | ||
5f39d397 | 1331 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1332 | { |
5f39d397 | 1333 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1334 | } |
1335 | ||
5f39d397 | 1336 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1337 | { |
5f39d397 | 1338 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1339 | } |
1340 | ||
5f39d397 CM |
1341 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1342 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1343 | { |
5f39d397 CM |
1344 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1345 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1346 | } |
1347 | ||
5f39d397 CM |
1348 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1349 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1350 | { |
5f39d397 CM |
1351 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1352 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1353 | } |
1354 | ||
e02119d5 CM |
1355 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1356 | ||
0660b5af CM |
1357 | /* |
1358 | * struct btrfs_root_ref | |
1359 | */ | |
1360 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1361 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1362 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1363 | ||
5f39d397 | 1364 | /* struct btrfs_dir_item */ |
5103e947 | 1365 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1366 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1367 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1368 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1369 | |
5f39d397 CM |
1370 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1371 | struct btrfs_dir_item *item, | |
1372 | struct btrfs_disk_key *key) | |
1d4f6404 | 1373 | { |
5f39d397 | 1374 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1375 | } |
1376 | ||
5f39d397 CM |
1377 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1378 | struct btrfs_dir_item *item, | |
1379 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1380 | { |
5f39d397 | 1381 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1382 | } |
1383 | ||
5f39d397 CM |
1384 | /* struct btrfs_disk_key */ |
1385 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1386 | objectid, 64); | |
1387 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1388 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1389 | |
e2fa7227 CM |
1390 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1391 | struct btrfs_disk_key *disk) | |
1392 | { | |
1393 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1394 | cpu->type = disk->type; |
e2fa7227 CM |
1395 | cpu->objectid = le64_to_cpu(disk->objectid); |
1396 | } | |
1397 | ||
1398 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1399 | struct btrfs_key *cpu) | |
1400 | { | |
1401 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1402 | disk->type = cpu->type; |
e2fa7227 CM |
1403 | disk->objectid = cpu_to_le64(cpu->objectid); |
1404 | } | |
1405 | ||
5f39d397 CM |
1406 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1407 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1408 | { |
5f39d397 CM |
1409 | struct btrfs_disk_key disk_key; |
1410 | btrfs_node_key(eb, &disk_key, nr); | |
1411 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1412 | } |
1413 | ||
5f39d397 CM |
1414 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1415 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1416 | { |
5f39d397 CM |
1417 | struct btrfs_disk_key disk_key; |
1418 | btrfs_item_key(eb, &disk_key, nr); | |
1419 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1420 | } |
1421 | ||
5f39d397 CM |
1422 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1423 | struct btrfs_dir_item *item, | |
1424 | struct btrfs_key *key) | |
4d775673 | 1425 | { |
5f39d397 CM |
1426 | struct btrfs_disk_key disk_key; |
1427 | btrfs_dir_item_key(eb, item, &disk_key); | |
1428 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1429 | } |
1430 | ||
58176a96 | 1431 | |
5f39d397 | 1432 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1433 | { |
5f39d397 | 1434 | return key->type; |
3768f368 CM |
1435 | } |
1436 | ||
5f39d397 | 1437 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1438 | { |
5f39d397 | 1439 | key->type = val; |
3768f368 CM |
1440 | } |
1441 | ||
5f39d397 | 1442 | /* struct btrfs_header */ |
db94535d | 1443 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1444 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1445 | generation, 64); | |
1446 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1447 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1448 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1449 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1450 | |
63b10fc4 CM |
1451 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1452 | { | |
1453 | return (btrfs_header_flags(eb) & flag) == flag; | |
1454 | } | |
1455 | ||
1456 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1457 | { | |
1458 | u64 flags = btrfs_header_flags(eb); | |
1459 | btrfs_set_header_flags(eb, flags | flag); | |
1460 | return (flags & flag) == flag; | |
1461 | } | |
1462 | ||
1463 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1464 | { | |
1465 | u64 flags = btrfs_header_flags(eb); | |
1466 | btrfs_set_header_flags(eb, flags & ~flag); | |
1467 | return (flags & flag) == flag; | |
1468 | } | |
1469 | ||
5f39d397 | 1470 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1471 | { |
5f39d397 CM |
1472 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1473 | return (u8 *)ptr; | |
0f7d52f4 CM |
1474 | } |
1475 | ||
e17cade2 CM |
1476 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1477 | { | |
1478 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1479 | return (u8 *)ptr; | |
1480 | } | |
1481 | ||
5f39d397 | 1482 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1483 | { |
5f39d397 CM |
1484 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1485 | return (u8 *)ptr; | |
3768f368 CM |
1486 | } |
1487 | ||
5f39d397 | 1488 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1489 | { |
5f39d397 CM |
1490 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1491 | return (u8 *)ptr; | |
3768f368 CM |
1492 | } |
1493 | ||
5f39d397 | 1494 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1495 | { |
5f39d397 | 1496 | return NULL; |
3768f368 CM |
1497 | } |
1498 | ||
5f39d397 | 1499 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1500 | { |
5f39d397 | 1501 | return NULL; |
3768f368 CM |
1502 | } |
1503 | ||
5f39d397 | 1504 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1505 | { |
5f39d397 | 1506 | return NULL; |
3768f368 CM |
1507 | } |
1508 | ||
5f39d397 | 1509 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1510 | { |
5f39d397 | 1511 | return (btrfs_header_level(eb) == 0); |
3768f368 CM |
1512 | } |
1513 | ||
5f39d397 | 1514 | /* struct btrfs_root_item */ |
84234f3a YZ |
1515 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
1516 | generation, 64); | |
5f39d397 | 1517 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
1518 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1519 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1520 | |
84234f3a YZ |
1521 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
1522 | generation, 64); | |
db94535d CM |
1523 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1524 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1525 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1526 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 1527 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
1528 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1529 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
1530 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
1531 | last_snapshot, 64); | |
123abc88 | 1532 | |
5f39d397 | 1533 | /* struct btrfs_super_block */ |
607d432d | 1534 | |
db94535d | 1535 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1536 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1537 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1538 | generation, 64); | |
1539 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1540 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1541 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
1542 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
1543 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
1544 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1545 | root_level, 8); | |
0b86a832 CM |
1546 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1547 | chunk_root, 64); | |
1548 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1549 | chunk_root_level, 8); |
1550 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1551 | log_root, 64); | |
c3027eb5 CM |
1552 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
1553 | log_root_transid, 64); | |
e02119d5 CM |
1554 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
1555 | log_root_level, 8); | |
db94535d CM |
1556 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1557 | total_bytes, 64); | |
1558 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1559 | bytes_used, 64); | |
5f39d397 CM |
1560 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1561 | sectorsize, 32); | |
1562 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1563 | nodesize, 32); | |
1564 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1565 | leafsize, 32); | |
87ee04eb CM |
1566 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1567 | stripesize, 32); | |
5f39d397 CM |
1568 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1569 | root_dir_objectid, 64); | |
8a4b83cc CM |
1570 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1571 | num_devices, 64); | |
f2b636e8 JB |
1572 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
1573 | compat_flags, 64); | |
1574 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
1575 | compat_flags, 64); | |
1576 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, | |
1577 | incompat_flags, 64); | |
607d432d JB |
1578 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
1579 | csum_type, 16); | |
1580 | ||
1581 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
1582 | { | |
1583 | int t = btrfs_super_csum_type(s); | |
1584 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
1585 | return btrfs_csum_sizes[t]; | |
1586 | } | |
2e635a27 | 1587 | |
5f39d397 | 1588 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1589 | { |
5f39d397 | 1590 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1591 | } |
1592 | ||
5f39d397 CM |
1593 | /* struct btrfs_file_extent_item */ |
1594 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1595 | |
5f39d397 | 1596 | static inline unsigned long btrfs_file_extent_inline_start(struct |
236454df CM |
1597 | btrfs_file_extent_item *e) |
1598 | { | |
5f39d397 | 1599 | unsigned long offset = (unsigned long)e; |
db94535d | 1600 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1601 | return offset; |
236454df CM |
1602 | } |
1603 | ||
1604 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1605 | { | |
db94535d | 1606 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
1607 | } |
1608 | ||
db94535d CM |
1609 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
1610 | disk_bytenr, 64); | |
5f39d397 CM |
1611 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
1612 | generation, 64); | |
db94535d CM |
1613 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
1614 | disk_num_bytes, 64); | |
5f39d397 CM |
1615 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
1616 | offset, 64); | |
db94535d CM |
1617 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
1618 | num_bytes, 64); | |
c8b97818 CM |
1619 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
1620 | ram_bytes, 64); | |
1621 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
1622 | compression, 8); | |
1623 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
1624 | encryption, 8); | |
1625 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
1626 | other_encoding, 16); | |
1627 | ||
1628 | /* this returns the number of file bytes represented by the inline item. | |
1629 | * If an item is compressed, this is the uncompressed size | |
1630 | */ | |
1631 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
1632 | struct btrfs_file_extent_item *e) | |
1633 | { | |
1634 | return btrfs_file_extent_ram_bytes(eb, e); | |
1635 | } | |
1636 | ||
1637 | /* | |
1638 | * this returns the number of bytes used by the item on disk, minus the | |
1639 | * size of any extent headers. If a file is compressed on disk, this is | |
1640 | * the compressed size | |
1641 | */ | |
1642 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
1643 | struct btrfs_item *e) | |
1644 | { | |
1645 | unsigned long offset; | |
1646 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
1647 | return btrfs_item_size(eb, e) - offset; | |
1648 | } | |
9f5fae2f | 1649 | |
e20d96d6 CM |
1650 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1651 | { | |
1652 | return sb->s_fs_info; | |
1653 | } | |
1654 | ||
58176a96 JB |
1655 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1656 | const char *name, int len) | |
1657 | { | |
1658 | /* if we already have a name just free it */ | |
1659 | if (root->name) | |
1660 | kfree(root->name); | |
1661 | ||
1662 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1663 | if (!root->name) | |
1664 | return -ENOMEM; | |
1665 | ||
1666 | memcpy(root->name, name, len); | |
1667 | root->name[len] ='\0'; | |
1668 | ||
1669 | return 0; | |
1670 | } | |
1671 | ||
db94535d CM |
1672 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) { |
1673 | if (level == 0) | |
1674 | return root->leafsize; | |
1675 | return root->nodesize; | |
1676 | } | |
1677 | ||
4beb1b8b CM |
1678 | /* helper function to cast into the data area of the leaf. */ |
1679 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 1680 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
1681 | btrfs_item_offset_nr(leaf, slot))) |
1682 | ||
1683 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1684 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1685 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 1686 | |
2b1f55b0 CM |
1687 | static inline struct dentry *fdentry(struct file *file) |
1688 | { | |
6da6abae | 1689 | return file->f_path.dentry; |
6da6abae CM |
1690 | } |
1691 | ||
b18c6685 | 1692 | /* extent-tree.c */ |
31840ae1 | 1693 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
5b21f2ed ZY |
1694 | int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans, |
1695 | struct btrfs_root *root, u64 bytenr, | |
1696 | u64 num_bytes, u32 *refs); | |
e02119d5 CM |
1697 | int btrfs_update_pinned_extents(struct btrfs_root *root, |
1698 | u64 bytenr, u64 num, int pin); | |
1699 | int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, | |
1700 | struct btrfs_root *root, struct extent_buffer *leaf); | |
80ff3856 YZ |
1701 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
1702 | struct btrfs_root *root, u64 bytenr); | |
e9d0b13b CM |
1703 | int btrfs_extent_post_op(struct btrfs_trans_handle *trans, |
1704 | struct btrfs_root *root); | |
d1310b2e | 1705 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
5276aeda CM |
1706 | struct btrfs_block_group_cache *btrfs_lookup_block_group(struct |
1707 | btrfs_fs_info *info, | |
db94535d | 1708 | u64 bytenr); |
31f3c99b CM |
1709 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1710 | struct btrfs_block_group_cache | |
be744175 | 1711 | *hint, u64 search_start, |
de428b63 | 1712 | int data, int owner); |
5f39d397 | 1713 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
7bb86316 | 1714 | struct btrfs_root *root, |
31840ae1 | 1715 | u32 blocksize, u64 parent, |
7bb86316 CM |
1716 | u64 root_objectid, |
1717 | u64 ref_generation, | |
7bb86316 CM |
1718 | int level, |
1719 | u64 hint, | |
1720 | u64 empty_size); | |
65b51a00 CM |
1721 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
1722 | struct btrfs_root *root, | |
1723 | u64 bytenr, u32 blocksize); | |
4d775673 | 1724 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 | 1725 | struct btrfs_root *root, |
31840ae1 | 1726 | u64 num_bytes, u64 parent, u64 min_bytes, |
98d20f67 | 1727 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1728 | u64 owner, u64 empty_size, u64 hint_byte, |
ec44a35c | 1729 | u64 search_end, struct btrfs_key *ins, u64 data); |
e6dcd2dc | 1730 | int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1731 | struct btrfs_root *root, u64 parent, |
e6dcd2dc | 1732 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1733 | u64 owner, struct btrfs_key *ins); |
e02119d5 | 1734 | int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1735 | struct btrfs_root *root, u64 parent, |
e02119d5 | 1736 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1737 | u64 owner, struct btrfs_key *ins); |
e6dcd2dc CM |
1738 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
1739 | struct btrfs_root *root, | |
1740 | u64 num_bytes, u64 min_alloc_size, | |
1741 | u64 empty_size, u64 hint_byte, | |
1742 | u64 search_end, struct btrfs_key *ins, | |
1743 | u64 data); | |
e089f05c | 1744 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
31840ae1 ZY |
1745 | struct extent_buffer *orig_buf, struct extent_buffer *buf, |
1746 | u32 *nr_extents); | |
1747 | int btrfs_cache_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
1748 | struct extent_buffer *buf, u32 nr_extents); | |
1749 | int btrfs_update_ref(struct btrfs_trans_handle *trans, | |
1750 | struct btrfs_root *root, struct extent_buffer *orig_buf, | |
1751 | struct extent_buffer *buf, int start_slot, int nr); | |
1752 | int btrfs_free_extent(struct btrfs_trans_handle *trans, | |
1753 | struct btrfs_root *root, | |
1754 | u64 bytenr, u64 num_bytes, u64 parent, | |
7bb86316 | 1755 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1756 | u64 owner_objectid, int pin); |
65b51a00 | 1757 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
ccd467d6 CM |
1758 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1759 | struct btrfs_root *root, | |
d1310b2e | 1760 | struct extent_io_tree *unpin); |
b18c6685 | 1761 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
1762 | struct btrfs_root *root, |
1763 | u64 bytenr, u64 num_bytes, u64 parent, | |
1764 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1765 | u64 owner_objectid); |
31840ae1 ZY |
1766 | int btrfs_update_extent_ref(struct btrfs_trans_handle *trans, |
1767 | struct btrfs_root *root, u64 bytenr, | |
1768 | u64 orig_parent, u64 parent, | |
1769 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1770 | u64 owner_objectid); |
9078a3e1 CM |
1771 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1772 | struct btrfs_root *root); | |
1773 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1774 | int btrfs_read_block_groups(struct btrfs_root *root); | |
0b86a832 CM |
1775 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
1776 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 1777 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 1778 | u64 size); |
1a40e23b ZY |
1779 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
1780 | struct btrfs_root *root, u64 group_start); | |
1781 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
f82d02d9 YZ |
1782 | int btrfs_free_reloc_root(struct btrfs_trans_handle *trans, |
1783 | struct btrfs_root *root); | |
1a40e23b | 1784 | int btrfs_drop_dead_reloc_roots(struct btrfs_root *root); |
1a40e23b ZY |
1785 | int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle *trans, |
1786 | struct btrfs_root *root, | |
1787 | struct extent_buffer *buf, u64 orig_start); | |
1788 | int btrfs_add_dead_reloc_root(struct btrfs_root *root); | |
1789 | int btrfs_cleanup_reloc_trees(struct btrfs_root *root); | |
2b82032c | 1790 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
dee26a9f | 1791 | /* ctree.c */ |
0b86a832 CM |
1792 | int btrfs_previous_item(struct btrfs_root *root, |
1793 | struct btrfs_path *path, u64 min_objectid, | |
1794 | int type); | |
1a40e23b ZY |
1795 | int btrfs_merge_path(struct btrfs_trans_handle *trans, |
1796 | struct btrfs_root *root, | |
1797 | struct btrfs_key *node_keys, | |
1798 | u64 *nodes, int lowest_level); | |
31840ae1 ZY |
1799 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
1800 | struct btrfs_root *root, struct btrfs_path *path, | |
1801 | struct btrfs_key *new_key); | |
925baedd CM |
1802 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
1803 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 1804 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
1805 | struct btrfs_key *key, int lowest_level, |
1806 | int cache_only, u64 min_trans); | |
1807 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 1808 | struct btrfs_key *max_key, |
3f157a2f CM |
1809 | struct btrfs_path *path, int cache_only, |
1810 | u64 min_trans); | |
5f39d397 CM |
1811 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
1812 | struct btrfs_root *root, struct extent_buffer *buf, | |
1813 | struct extent_buffer *parent, int parent_slot, | |
65b51a00 | 1814 | struct extent_buffer **cow_ret, u64 prealloc_dest); |
be20aa9d CM |
1815 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
1816 | struct btrfs_root *root, | |
1817 | struct extent_buffer *buf, | |
1818 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
6567e837 CM |
1819 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1820 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1821 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1822 | struct btrfs_root *root, | |
1823 | struct btrfs_path *path, | |
179e29e4 | 1824 | u32 new_size, int from_end); |
459931ec CM |
1825 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
1826 | struct btrfs_root *root, | |
1827 | struct btrfs_path *path, | |
1828 | struct btrfs_key *new_key, | |
1829 | unsigned long split_offset); | |
e089f05c CM |
1830 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1831 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1832 | ins_len, int cow); | |
6702ed49 | 1833 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 1834 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
1835 | int start_slot, int cache_only, u64 *last_ret, |
1836 | struct btrfs_key *progress); | |
234b63a0 | 1837 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1838 | struct btrfs_path *btrfs_alloc_path(void); |
1839 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1840 | void btrfs_init_path(struct btrfs_path *p); |
85e21bac CM |
1841 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1842 | struct btrfs_path *path, int slot, int nr); | |
323ac95b CM |
1843 | int btrfs_del_leaf(struct btrfs_trans_handle *trans, |
1844 | struct btrfs_root *root, | |
1845 | struct btrfs_path *path, u64 bytenr); | |
85e21bac CM |
1846 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
1847 | struct btrfs_root *root, | |
1848 | struct btrfs_path *path) | |
1849 | { | |
1850 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
1851 | } | |
1852 | ||
e089f05c CM |
1853 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1854 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
f3465ca4 JB |
1855 | int btrfs_insert_some_items(struct btrfs_trans_handle *trans, |
1856 | struct btrfs_root *root, | |
1857 | struct btrfs_path *path, | |
1858 | struct btrfs_key *cpu_key, u32 *data_size, | |
1859 | int nr); | |
9c58309d CM |
1860 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
1861 | struct btrfs_root *root, | |
1862 | struct btrfs_path *path, | |
1863 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
1864 | ||
1865 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
1866 | struct btrfs_root *root, | |
1867 | struct btrfs_path *path, | |
1868 | struct btrfs_key *key, | |
1869 | u32 data_size) | |
1870 | { | |
1871 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
1872 | } | |
1873 | ||
234b63a0 | 1874 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 1875 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 1876 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 1877 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1878 | *root); |
f82d02d9 YZ |
1879 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
1880 | struct btrfs_root *root, | |
1881 | struct extent_buffer *node, | |
1882 | struct extent_buffer *parent); | |
dee26a9f | 1883 | /* root-item.c */ |
ea9e8b11 CM |
1884 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
1885 | struct btrfs_path *path, | |
1886 | u64 root_id, u64 ref_id); | |
0660b5af CM |
1887 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
1888 | struct btrfs_root *tree_root, | |
1889 | u64 root_id, u8 type, u64 ref_id, | |
1890 | u64 dirid, u64 sequence, | |
1891 | const char *name, int name_len); | |
e089f05c CM |
1892 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1893 | struct btrfs_key *key); | |
1894 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1895 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1896 | *item); | |
1897 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1898 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1899 | *item); | |
1900 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1901 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
1902 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
1903 | u64 *found_objectid); | |
5ce14bbc CM |
1904 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
1905 | struct btrfs_root *latest_root); | |
dee26a9f | 1906 | /* dir-item.c */ |
e089f05c | 1907 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 | 1908 | *root, const char *name, int name_len, u64 dir, |
aec7477b | 1909 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
1910 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1911 | struct btrfs_root *root, | |
1912 | struct btrfs_path *path, u64 dir, | |
1913 | const char *name, int name_len, | |
1914 | int mod); | |
1915 | struct btrfs_dir_item * | |
1916 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1917 | struct btrfs_root *root, | |
1918 | struct btrfs_path *path, u64 dir, | |
1919 | u64 objectid, const char *name, int name_len, | |
1920 | int mod); | |
1921 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1922 | struct btrfs_path *path, | |
7f5c1516 | 1923 | const char *name, int name_len); |
7e38180e CM |
1924 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1925 | struct btrfs_root *root, | |
1926 | struct btrfs_path *path, | |
1927 | struct btrfs_dir_item *di); | |
5103e947 JB |
1928 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
1929 | struct btrfs_root *root, const char *name, | |
1930 | u16 name_len, const void *data, u16 data_len, | |
1931 | u64 dir); | |
1932 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
1933 | struct btrfs_root *root, | |
1934 | struct btrfs_path *path, u64 dir, | |
1935 | const char *name, u16 name_len, | |
1936 | int mod); | |
7b128766 JB |
1937 | |
1938 | /* orphan.c */ | |
1939 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
1940 | struct btrfs_root *root, u64 offset); | |
1941 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
1942 | struct btrfs_root *root, u64 offset); | |
1943 | ||
dee26a9f | 1944 | /* inode-map.c */ |
9f5fae2f CM |
1945 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1946 | struct btrfs_root *fs_root, | |
1947 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1948 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1949 | ||
dee26a9f | 1950 | /* inode-item.c */ |
3954401f CM |
1951 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
1952 | struct btrfs_root *root, | |
1953 | const char *name, int name_len, | |
aec7477b | 1954 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
1955 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
1956 | struct btrfs_root *root, | |
1957 | const char *name, int name_len, | |
aec7477b | 1958 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
1959 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
1960 | struct btrfs_root *root, | |
1961 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 1962 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1963 | *root, struct btrfs_path *path, |
1964 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1965 | |
1966 | /* file-item.c */ | |
459931ec CM |
1967 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
1968 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 1969 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 1970 | struct bio *bio, u32 *dst); |
b18c6685 | 1971 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
1972 | struct btrfs_root *root, |
1973 | u64 objectid, u64 pos, | |
1974 | u64 disk_offset, u64 disk_num_bytes, | |
1975 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
1976 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
1977 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1978 | struct btrfs_root *root, | |
1979 | struct btrfs_path *path, u64 objectid, | |
db94535d | 1980 | u64 bytenr, int mod); |
065631f6 | 1981 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 1982 | struct btrfs_root *root, |
e6dcd2dc | 1983 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 1984 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 1985 | struct bio *bio, u64 file_start, int contig); |
c8b97818 CM |
1986 | int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode, |
1987 | u64 start, unsigned long len); | |
b18c6685 CM |
1988 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1989 | struct btrfs_root *root, | |
1990 | struct btrfs_path *path, | |
d20f7043 | 1991 | u64 bytenr, int cow); |
1de037a4 CM |
1992 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1993 | struct btrfs_root *root, struct btrfs_path *path, | |
1994 | u64 isize); | |
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); | |
cb8e7090 | 2022 | int btrfs_create_subvol_root(struct btrfs_root *new_root, struct dentry *dentry, |
f46b5a66 CH |
2023 | struct btrfs_trans_handle *trans, u64 new_dirid, |
2024 | struct btrfs_block_group_cache *block_group); | |
2025 | ||
239b14b3 | 2026 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 2027 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 2028 | |
edbd8d4e CM |
2029 | unsigned long btrfs_force_ra(struct address_space *mapping, |
2030 | struct file_ra_state *ra, struct file *file, | |
2031 | pgoff_t offset, pgoff_t last_index); | |
1832a6d5 CM |
2032 | int btrfs_check_free_space(struct btrfs_root *root, u64 num_required, |
2033 | int for_del); | |
9ebefb18 CM |
2034 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
2035 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 | 2036 | void btrfs_delete_inode(struct inode *inode); |
2da98f00 | 2037 | void btrfs_put_inode(struct inode *inode); |
39279cc3 CM |
2038 | void btrfs_read_locked_inode(struct inode *inode); |
2039 | int btrfs_write_inode(struct inode *inode, int wait); | |
2040 | void btrfs_dirty_inode(struct inode *inode); | |
2041 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
2042 | void btrfs_destroy_inode(struct inode *inode); | |
2043 | int btrfs_init_cachep(void); | |
2044 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 2045 | long btrfs_ioctl_trans_end(struct file *file); |
5b21f2ed ZY |
2046 | struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, |
2047 | struct btrfs_root *root, int wait); | |
39279cc3 CM |
2048 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
2049 | struct btrfs_root *root); | |
1a54ef8c BR |
2050 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
2051 | struct btrfs_root *root, int *is_new); | |
39279cc3 CM |
2052 | int btrfs_commit_write(struct file *file, struct page *page, |
2053 | unsigned from, unsigned to); | |
a52d9a80 CM |
2054 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
2055 | size_t page_offset, u64 start, u64 end, | |
2056 | int create); | |
2057 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
2058 | struct btrfs_root *root, | |
2059 | struct inode *inode); | |
5b21f2ed ZY |
2060 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
2061 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
2062 | void btrfs_orphan_cleanup(struct btrfs_root *root); | |
9036c102 | 2063 | int btrfs_cont_expand(struct inode *inode, loff_t size); |
f46b5a66 CH |
2064 | |
2065 | /* ioctl.c */ | |
2066 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
2067 | ||
39279cc3 | 2068 | /* file.c */ |
e02119d5 | 2069 | int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync); |
5b21f2ed ZY |
2070 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
2071 | int skip_pinned); | |
5f56406a | 2072 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
39279cc3 CM |
2073 | extern struct file_operations btrfs_file_operations; |
2074 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
2075 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 2076 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
d899e052 YZ |
2077 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
2078 | struct btrfs_root *root, | |
2079 | struct inode *inode, u64 start, u64 end); | |
6bf13c0c SW |
2080 | int btrfs_release_file(struct inode *inode, struct file *file); |
2081 | ||
6702ed49 CM |
2082 | /* tree-defrag.c */ |
2083 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
2084 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
2085 | |
2086 | /* sysfs.c */ | |
2087 | int btrfs_init_sysfs(void); | |
2088 | void btrfs_exit_sysfs(void); | |
2089 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
2090 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
2091 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
2092 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
2093 | ||
5103e947 JB |
2094 | /* xattr.c */ |
2095 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 2096 | |
edbd8d4e CM |
2097 | /* super.c */ |
2098 | u64 btrfs_parse_size(char *str); | |
edf24abe | 2099 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 2100 | int btrfs_sync_fs(struct super_block *sb, int wait); |
33268eaf JB |
2101 | |
2102 | /* acl.c */ | |
2103 | int btrfs_check_acl(struct inode *inode, int mask); | |
2104 | int btrfs_init_acl(struct inode *inode, struct inode *dir); | |
2105 | int btrfs_acl_chmod(struct inode *inode); | |
0f9dd46c JB |
2106 | |
2107 | /* free-space-cache.c */ | |
2108 | int btrfs_add_free_space(struct btrfs_block_group_cache *block_group, | |
2109 | u64 bytenr, u64 size); | |
25179201 JB |
2110 | int btrfs_add_free_space_lock(struct btrfs_block_group_cache *block_group, |
2111 | u64 offset, u64 bytes); | |
0f9dd46c JB |
2112 | int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group, |
2113 | u64 bytenr, u64 size); | |
25179201 JB |
2114 | int btrfs_remove_free_space_lock(struct btrfs_block_group_cache *block_group, |
2115 | u64 offset, u64 bytes); | |
0f9dd46c JB |
2116 | void btrfs_remove_free_space_cache(struct btrfs_block_group_cache |
2117 | *block_group); | |
2118 | struct btrfs_free_space *btrfs_find_free_space(struct btrfs_block_group_cache | |
2119 | *block_group, u64 offset, | |
2120 | u64 bytes); | |
2121 | void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group, | |
2122 | u64 bytes); | |
2123 | u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group); | |
eb60ceac | 2124 | #endif |