]>
Commit | Line | Data |
---|---|---|
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 | ||
4008c04a | 46 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 47 | |
5a3f23d5 CM |
48 | /* |
49 | * files bigger than this get some pre-flushing when they are added | |
50 | * to the ordered operations list. That way we limit the total | |
51 | * work done by the commit | |
52 | */ | |
53 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) | |
54 | ||
0b86a832 | 55 | /* holds pointers to all of the tree roots */ |
6407bf6d | 56 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
57 | |
58 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 59 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 60 | |
0b86a832 CM |
61 | /* |
62 | * chunk tree stores translations from logical -> physical block numbering | |
63 | * the super block points to the chunk tree | |
64 | */ | |
e085def2 | 65 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
66 | |
67 | /* | |
68 | * stores information about which areas of a given device are in use. | |
69 | * one per device. The tree of tree roots points to the device tree | |
70 | */ | |
e085def2 CM |
71 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
72 | ||
73 | /* one per subvolume, storing files and directories */ | |
74 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
75 | ||
76 | /* directory objectid inside the root tree */ | |
77 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 78 | |
d20f7043 CM |
79 | /* holds checksums of all the data extents */ |
80 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
81 | ||
7b128766 JB |
82 | /* orhpan objectid for tracking unlinked/truncated files */ |
83 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
84 | ||
e02119d5 CM |
85 | /* does write ahead logging to speed up fsyncs */ |
86 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
87 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
88 | ||
e4657689 ZY |
89 | /* for space balancing */ |
90 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
91 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
92 | ||
d20f7043 CM |
93 | /* |
94 | * extent checksums all have this objectid | |
95 | * this allows them to share the logging tree | |
96 | * for fsyncs | |
97 | */ | |
98 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
99 | ||
31840ae1 ZY |
100 | /* dummy objectid represents multiple objectids */ |
101 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
102 | ||
0b86a832 | 103 | /* |
6527cdbe | 104 | * All files have objectids in this range. |
0b86a832 | 105 | */ |
f6dbff55 | 106 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 107 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 108 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 109 | |
0b86a832 CM |
110 | |
111 | /* | |
112 | * the device items go into the chunk tree. The key is in the form | |
113 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
114 | */ | |
115 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
116 | ||
e20d96d6 CM |
117 | /* |
118 | * we can actually store much bigger names, but lets not confuse the rest | |
119 | * of linux | |
120 | */ | |
121 | #define BTRFS_NAME_LEN 255 | |
122 | ||
f254e52c CM |
123 | /* 32 bytes in various csum fields */ |
124 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
125 | |
126 | /* csum types */ | |
127 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
128 | ||
129 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
130 | ||
509659cd | 131 | /* four bytes for CRC32 */ |
3954401f | 132 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 133 | |
fabb5681 CM |
134 | #define BTRFS_FT_UNKNOWN 0 |
135 | #define BTRFS_FT_REG_FILE 1 | |
136 | #define BTRFS_FT_DIR 2 | |
137 | #define BTRFS_FT_CHRDEV 3 | |
138 | #define BTRFS_FT_BLKDEV 4 | |
139 | #define BTRFS_FT_FIFO 5 | |
140 | #define BTRFS_FT_SOCK 6 | |
141 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
142 | #define BTRFS_FT_XATTR 8 |
143 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 144 | |
fec577fb CM |
145 | /* |
146 | * the key defines the order in the tree, and so it also defines (optimal) | |
147 | * block layout. objectid corresonds to the inode number. The flags | |
148 | * tells us things about the object, and is a kind of stream selector. | |
149 | * so for a given inode, keys with flags of 1 might refer to the inode | |
150 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
151 | * may point to extents. | |
152 | * | |
153 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
154 | * |
155 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
156 | * in cpu native order. Otherwise they are identical and their sizes | |
157 | * should be the same (ie both packed) | |
fec577fb | 158 | */ |
e2fa7227 CM |
159 | struct btrfs_disk_key { |
160 | __le64 objectid; | |
5f39d397 | 161 | u8 type; |
70b2befd | 162 | __le64 offset; |
e2fa7227 CM |
163 | } __attribute__ ((__packed__)); |
164 | ||
165 | struct btrfs_key { | |
eb60ceac | 166 | u64 objectid; |
5f39d397 | 167 | u8 type; |
70b2befd | 168 | u64 offset; |
eb60ceac CM |
169 | } __attribute__ ((__packed__)); |
170 | ||
0b86a832 CM |
171 | struct btrfs_mapping_tree { |
172 | struct extent_map_tree map_tree; | |
173 | }; | |
174 | ||
e17cade2 | 175 | #define BTRFS_UUID_SIZE 16 |
0b86a832 CM |
176 | struct btrfs_dev_item { |
177 | /* the internal btrfs device id */ | |
178 | __le64 devid; | |
179 | ||
180 | /* size of the device */ | |
181 | __le64 total_bytes; | |
182 | ||
183 | /* bytes used */ | |
184 | __le64 bytes_used; | |
185 | ||
186 | /* optimal io alignment for this device */ | |
187 | __le32 io_align; | |
188 | ||
189 | /* optimal io width for this device */ | |
190 | __le32 io_width; | |
191 | ||
192 | /* minimal io size for this device */ | |
193 | __le32 sector_size; | |
194 | ||
0b86a832 CM |
195 | /* type and info about this device */ |
196 | __le64 type; | |
197 | ||
2b82032c YZ |
198 | /* expected generation for this device */ |
199 | __le64 generation; | |
200 | ||
c3027eb5 CM |
201 | /* |
202 | * starting byte of this partition on the device, | |
203 | * to allowr for stripe alignment in the future | |
204 | */ | |
205 | __le64 start_offset; | |
206 | ||
e17cade2 CM |
207 | /* grouping information for allocation decisions */ |
208 | __le32 dev_group; | |
209 | ||
210 | /* seek speed 0-100 where 100 is fastest */ | |
211 | u8 seek_speed; | |
212 | ||
213 | /* bandwidth 0-100 where 100 is fastest */ | |
214 | u8 bandwidth; | |
215 | ||
0d81ba5d | 216 | /* btrfs generated uuid for this device */ |
e17cade2 | 217 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
218 | |
219 | /* uuid of FS who owns this device */ | |
220 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
221 | } __attribute__ ((__packed__)); |
222 | ||
223 | struct btrfs_stripe { | |
224 | __le64 devid; | |
225 | __le64 offset; | |
e17cade2 | 226 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
227 | } __attribute__ ((__packed__)); |
228 | ||
229 | struct btrfs_chunk { | |
e17cade2 CM |
230 | /* size of this chunk in bytes */ |
231 | __le64 length; | |
232 | ||
233 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 234 | __le64 owner; |
e17cade2 | 235 | |
0b86a832 CM |
236 | __le64 stripe_len; |
237 | __le64 type; | |
238 | ||
239 | /* optimal io alignment for this chunk */ | |
240 | __le32 io_align; | |
241 | ||
242 | /* optimal io width for this chunk */ | |
243 | __le32 io_width; | |
244 | ||
245 | /* minimal io size for this chunk */ | |
246 | __le32 sector_size; | |
247 | ||
248 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
249 | * item in the btree | |
250 | */ | |
251 | __le16 num_stripes; | |
321aecc6 CM |
252 | |
253 | /* sub stripes only matter for raid10 */ | |
254 | __le16 sub_stripes; | |
0b86a832 CM |
255 | struct btrfs_stripe stripe; |
256 | /* additional stripes go here */ | |
257 | } __attribute__ ((__packed__)); | |
258 | ||
259 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) | |
260 | { | |
261 | BUG_ON(num_stripes == 0); | |
262 | return sizeof(struct btrfs_chunk) + | |
263 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
264 | } | |
265 | ||
5f39d397 | 266 | #define BTRFS_FSID_SIZE 16 |
63b10fc4 CM |
267 | #define BTRFS_HEADER_FLAG_WRITTEN (1 << 0) |
268 | ||
fec577fb CM |
269 | /* |
270 | * every tree block (leaf or node) starts with this header. | |
271 | */ | |
bb492bb0 | 272 | struct btrfs_header { |
e17cade2 | 273 | /* these first four must match the super block */ |
f254e52c | 274 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 275 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 276 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 277 | __le64 flags; |
e17cade2 CM |
278 | |
279 | /* allowed to be different from the super from here on down */ | |
280 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 281 | __le64 generation; |
4d775673 | 282 | __le64 owner; |
5f39d397 | 283 | __le32 nritems; |
9a6f11ed | 284 | u8 level; |
eb60ceac CM |
285 | } __attribute__ ((__packed__)); |
286 | ||
5f39d397 | 287 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
288 | sizeof(struct btrfs_header)) / \ |
289 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 290 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 291 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
292 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
293 | sizeof(struct btrfs_item) - \ | |
294 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 295 | |
2b82032c | 296 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
0b86a832 CM |
297 | |
298 | /* | |
299 | * this is a very generous portion of the super block, giving us | |
300 | * room to translate 14 chunks with 3 stripes each. | |
301 | */ | |
302 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 303 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 304 | |
fec577fb CM |
305 | /* |
306 | * the super block basically lists the main trees of the FS | |
307 | * it currently lacks any block count etc etc | |
308 | */ | |
234b63a0 | 309 | struct btrfs_super_block { |
f254e52c | 310 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 311 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 312 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 313 | __le64 bytenr; /* this block number */ |
63b10fc4 | 314 | __le64 flags; |
e17cade2 CM |
315 | |
316 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 317 | __le64 magic; |
3768f368 CM |
318 | __le64 generation; |
319 | __le64 root; | |
0b86a832 | 320 | __le64 chunk_root; |
e02119d5 | 321 | __le64 log_root; |
c3027eb5 CM |
322 | |
323 | /* this will help find the new super based on the log root */ | |
324 | __le64 log_root_transid; | |
db94535d CM |
325 | __le64 total_bytes; |
326 | __le64 bytes_used; | |
2e635a27 | 327 | __le64 root_dir_objectid; |
8a4b83cc | 328 | __le64 num_devices; |
5f39d397 CM |
329 | __le32 sectorsize; |
330 | __le32 nodesize; | |
331 | __le32 leafsize; | |
87ee04eb | 332 | __le32 stripesize; |
0b86a832 | 333 | __le32 sys_chunk_array_size; |
84234f3a | 334 | __le64 chunk_root_generation; |
f2b636e8 JB |
335 | __le64 compat_flags; |
336 | __le64 compat_ro_flags; | |
337 | __le64 incompat_flags; | |
607d432d | 338 | __le16 csum_type; |
db94535d | 339 | u8 root_level; |
0b86a832 | 340 | u8 chunk_root_level; |
e02119d5 | 341 | u8 log_root_level; |
0d81ba5d | 342 | struct btrfs_dev_item dev_item; |
c3027eb5 | 343 | |
7ae9c09d | 344 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 CM |
345 | |
346 | /* future expansion */ | |
347 | __le64 reserved[32]; | |
0b86a832 | 348 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
cfaa7295 CM |
349 | } __attribute__ ((__packed__)); |
350 | ||
f2b636e8 JB |
351 | /* |
352 | * Compat flags that we support. If any incompat flags are set other than the | |
353 | * ones specified below then we will fail to mount | |
354 | */ | |
355 | #define BTRFS_FEATURE_COMPAT_SUPP 0x0 | |
356 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0x0 | |
357 | #define BTRFS_FEATURE_INCOMPAT_SUPP 0x0 | |
358 | ||
fec577fb | 359 | /* |
62e2749e | 360 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
361 | * the item in the leaf (relative to the start of the data area) |
362 | */ | |
0783fcfc | 363 | struct btrfs_item { |
e2fa7227 | 364 | struct btrfs_disk_key key; |
123abc88 | 365 | __le32 offset; |
5f39d397 | 366 | __le32 size; |
eb60ceac CM |
367 | } __attribute__ ((__packed__)); |
368 | ||
fec577fb CM |
369 | /* |
370 | * leaves have an item area and a data area: | |
371 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
372 | * | |
373 | * The data is separate from the items to get the keys closer together | |
374 | * during searches. | |
375 | */ | |
234b63a0 | 376 | struct btrfs_leaf { |
bb492bb0 | 377 | struct btrfs_header header; |
123abc88 | 378 | struct btrfs_item items[]; |
eb60ceac CM |
379 | } __attribute__ ((__packed__)); |
380 | ||
fec577fb CM |
381 | /* |
382 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
383 | * other blocks | |
384 | */ | |
123abc88 CM |
385 | struct btrfs_key_ptr { |
386 | struct btrfs_disk_key key; | |
387 | __le64 blockptr; | |
74493f7a | 388 | __le64 generation; |
123abc88 CM |
389 | } __attribute__ ((__packed__)); |
390 | ||
234b63a0 | 391 | struct btrfs_node { |
bb492bb0 | 392 | struct btrfs_header header; |
123abc88 | 393 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
394 | } __attribute__ ((__packed__)); |
395 | ||
fec577fb | 396 | /* |
234b63a0 CM |
397 | * btrfs_paths remember the path taken from the root down to the leaf. |
398 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
399 | * to any other levels that are present. |
400 | * | |
401 | * The slots array records the index of the item or block pointer | |
402 | * used while walking the tree. | |
403 | */ | |
234b63a0 | 404 | struct btrfs_path { |
5f39d397 | 405 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 406 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
407 | /* if there is real range locking, this locks field will change */ |
408 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 409 | int reada; |
925baedd | 410 | /* keep some upper locks as we walk down */ |
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 | */ | |
b9473439 CM |
417 | unsigned int search_for_split:1; |
418 | unsigned int keep_locks:1; | |
419 | unsigned int skip_locking:1; | |
420 | unsigned int leave_spinning:1; | |
eb60ceac | 421 | }; |
5de08d7d | 422 | |
62e2749e CM |
423 | /* |
424 | * items in the extent btree are used to record the objectid of the | |
425 | * owner of the block and the number of references | |
426 | */ | |
427 | struct btrfs_extent_item { | |
428 | __le32 refs; | |
74493f7a CM |
429 | } __attribute__ ((__packed__)); |
430 | ||
431 | struct btrfs_extent_ref { | |
432 | __le64 root; | |
433 | __le64 generation; | |
434 | __le64 objectid; | |
31840ae1 | 435 | __le32 num_refs; |
62e2749e CM |
436 | } __attribute__ ((__packed__)); |
437 | ||
0b86a832 CM |
438 | /* dev extents record free space on individual devices. The owner |
439 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 440 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
441 | */ |
442 | struct btrfs_dev_extent { | |
e17cade2 CM |
443 | __le64 chunk_tree; |
444 | __le64 chunk_objectid; | |
445 | __le64 chunk_offset; | |
0b86a832 | 446 | __le64 length; |
e17cade2 | 447 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
448 | } __attribute__ ((__packed__)); |
449 | ||
3954401f | 450 | struct btrfs_inode_ref { |
aec7477b | 451 | __le64 index; |
3954401f CM |
452 | __le16 name_len; |
453 | /* name goes here */ | |
454 | } __attribute__ ((__packed__)); | |
455 | ||
0b86a832 | 456 | struct btrfs_timespec { |
f254e52c | 457 | __le64 sec; |
1e1d2701 CM |
458 | __le32 nsec; |
459 | } __attribute__ ((__packed__)); | |
460 | ||
95029d7d | 461 | enum btrfs_compression_type { |
c8b97818 CM |
462 | BTRFS_COMPRESS_NONE = 0, |
463 | BTRFS_COMPRESS_ZLIB = 1, | |
464 | BTRFS_COMPRESS_LAST = 2, | |
95029d7d | 465 | }; |
c8b97818 | 466 | |
1e1d2701 | 467 | struct btrfs_inode_item { |
e02119d5 | 468 | /* nfs style generation number */ |
1e1d2701 | 469 | __le64 generation; |
e02119d5 CM |
470 | /* transid that last touched this inode */ |
471 | __le64 transid; | |
1e1d2701 | 472 | __le64 size; |
a76a3cd4 | 473 | __le64 nbytes; |
31f3c99b | 474 | __le64 block_group; |
1e1d2701 CM |
475 | __le32 nlink; |
476 | __le32 uid; | |
477 | __le32 gid; | |
478 | __le32 mode; | |
0b86a832 | 479 | __le64 rdev; |
f2b636e8 | 480 | __le64 flags; |
c8b97818 | 481 | |
c3027eb5 CM |
482 | /* modification sequence number for NFS */ |
483 | __le64 sequence; | |
484 | ||
485 | /* | |
486 | * a little future expansion, for more than this we can | |
487 | * just grow the inode item and version it | |
488 | */ | |
489 | __le64 reserved[4]; | |
0b86a832 CM |
490 | struct btrfs_timespec atime; |
491 | struct btrfs_timespec ctime; | |
492 | struct btrfs_timespec mtime; | |
493 | struct btrfs_timespec otime; | |
1e1d2701 CM |
494 | } __attribute__ ((__packed__)); |
495 | ||
e02119d5 CM |
496 | struct btrfs_dir_log_item { |
497 | __le64 end; | |
498 | } __attribute__ ((__packed__)); | |
499 | ||
62e2749e | 500 | struct btrfs_dir_item { |
d6e4a428 | 501 | struct btrfs_disk_key location; |
e02119d5 | 502 | __le64 transid; |
5103e947 | 503 | __le16 data_len; |
a8a2ee0c | 504 | __le16 name_len; |
62e2749e CM |
505 | u8 type; |
506 | } __attribute__ ((__packed__)); | |
507 | ||
508 | struct btrfs_root_item { | |
d6e4a428 | 509 | struct btrfs_inode_item inode; |
84234f3a | 510 | __le64 generation; |
d6e4a428 | 511 | __le64 root_dirid; |
db94535d CM |
512 | __le64 bytenr; |
513 | __le64 byte_limit; | |
514 | __le64 bytes_used; | |
80ff3856 | 515 | __le64 last_snapshot; |
f2b636e8 | 516 | __le64 flags; |
62e2749e | 517 | __le32 refs; |
5eda7b5e CM |
518 | struct btrfs_disk_key drop_progress; |
519 | u8 drop_level; | |
db94535d | 520 | u8 level; |
9f5fae2f | 521 | } __attribute__ ((__packed__)); |
62e2749e | 522 | |
0660b5af CM |
523 | /* |
524 | * this is used for both forward and backward root refs | |
525 | */ | |
526 | struct btrfs_root_ref { | |
527 | __le64 dirid; | |
528 | __le64 sequence; | |
529 | __le16 name_len; | |
530 | } __attribute__ ((__packed__)); | |
531 | ||
d899e052 YZ |
532 | #define BTRFS_FILE_EXTENT_INLINE 0 |
533 | #define BTRFS_FILE_EXTENT_REG 1 | |
534 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 535 | |
9f5fae2f | 536 | struct btrfs_file_extent_item { |
c8b97818 CM |
537 | /* |
538 | * transaction id that created this extent | |
539 | */ | |
71951f35 | 540 | __le64 generation; |
c8b97818 CM |
541 | /* |
542 | * max number of bytes to hold this extent in ram | |
543 | * when we split a compressed extent we can't know how big | |
544 | * each of the resulting pieces will be. So, this is | |
545 | * an upper limit on the size of the extent in ram instead of | |
546 | * an exact limit. | |
547 | */ | |
548 | __le64 ram_bytes; | |
549 | ||
550 | /* | |
551 | * 32 bits for the various ways we might encode the data, | |
552 | * including compression and encryption. If any of these | |
553 | * are set to something a given disk format doesn't understand | |
554 | * it is treated like an incompat flag for reading and writing, | |
555 | * but not for stat. | |
556 | */ | |
557 | u8 compression; | |
558 | u8 encryption; | |
559 | __le16 other_encoding; /* spare for later use */ | |
560 | ||
561 | /* are we inline data or a real extent? */ | |
236454df | 562 | u8 type; |
c8b97818 | 563 | |
9f5fae2f CM |
564 | /* |
565 | * disk space consumed by the extent, checksum blocks are included | |
566 | * in these numbers | |
567 | */ | |
db94535d CM |
568 | __le64 disk_bytenr; |
569 | __le64 disk_num_bytes; | |
9f5fae2f | 570 | /* |
dee26a9f | 571 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
572 | * this extent record is for. This allows a file extent to point |
573 | * into the middle of an existing extent on disk, sharing it | |
574 | * between two snapshots (useful if some bytes in the middle of the | |
575 | * extent have changed | |
576 | */ | |
577 | __le64 offset; | |
578 | /* | |
c8b97818 CM |
579 | * the logical number of file blocks (no csums included). This |
580 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 581 | */ |
db94535d | 582 | __le64 num_bytes; |
c8b97818 | 583 | |
9f5fae2f CM |
584 | } __attribute__ ((__packed__)); |
585 | ||
f254e52c | 586 | struct btrfs_csum_item { |
509659cd | 587 | u8 csum; |
f254e52c CM |
588 | } __attribute__ ((__packed__)); |
589 | ||
0b86a832 CM |
590 | /* different types of block groups (and chunks) */ |
591 | #define BTRFS_BLOCK_GROUP_DATA (1 << 0) | |
592 | #define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1) | |
593 | #define BTRFS_BLOCK_GROUP_METADATA (1 << 2) | |
593060d7 | 594 | #define BTRFS_BLOCK_GROUP_RAID0 (1 << 3) |
8790d502 | 595 | #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) |
611f0e00 | 596 | #define BTRFS_BLOCK_GROUP_DUP (1 << 5) |
321aecc6 | 597 | #define BTRFS_BLOCK_GROUP_RAID10 (1 << 6) |
1e2677e0 | 598 | |
9078a3e1 CM |
599 | struct btrfs_block_group_item { |
600 | __le64 used; | |
0b86a832 CM |
601 | __le64 chunk_objectid; |
602 | __le64 flags; | |
9078a3e1 CM |
603 | } __attribute__ ((__packed__)); |
604 | ||
6324fbf3 CM |
605 | struct btrfs_space_info { |
606 | u64 flags; | |
6a63209f JB |
607 | |
608 | u64 total_bytes; /* total bytes in the space */ | |
609 | u64 bytes_used; /* total bytes used on disk */ | |
610 | u64 bytes_pinned; /* total bytes pinned, will be freed when the | |
611 | transaction finishes */ | |
612 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
613 | current allocations */ | |
614 | u64 bytes_readonly; /* total bytes that are read only */ | |
615 | ||
616 | /* delalloc accounting */ | |
617 | u64 bytes_delalloc; /* number of bytes reserved for allocation, | |
618 | this space is not necessarily reserved yet | |
619 | by the allocator */ | |
620 | u64 bytes_may_use; /* number of bytes that may be used for | |
621 | delalloc */ | |
622 | ||
623 | int full; /* indicates that we cannot allocate any more | |
624 | chunks for this space */ | |
625 | int force_alloc; /* set if we need to force a chunk alloc for | |
626 | this space */ | |
627 | ||
6324fbf3 | 628 | struct list_head list; |
0f9dd46c JB |
629 | |
630 | /* for block groups in our same type */ | |
631 | struct list_head block_groups; | |
632 | spinlock_t lock; | |
80eb234a | 633 | struct rw_semaphore groups_sem; |
0f9dd46c JB |
634 | }; |
635 | ||
fa9c0d79 CM |
636 | /* |
637 | * free clusters are used to claim free space in relatively large chunks, | |
638 | * allowing us to do less seeky writes. They are used for all metadata | |
639 | * allocations and data allocations in ssd mode. | |
640 | */ | |
641 | struct btrfs_free_cluster { | |
642 | spinlock_t lock; | |
643 | spinlock_t refill_lock; | |
644 | struct rb_root root; | |
645 | ||
646 | /* largest extent in this cluster */ | |
647 | u64 max_size; | |
648 | ||
649 | /* first extent starting offset */ | |
650 | u64 window_start; | |
651 | ||
652 | struct btrfs_block_group_cache *block_group; | |
653 | /* | |
654 | * when a cluster is allocated from a block group, we put the | |
655 | * cluster onto a list in the block group so that it can | |
656 | * be freed before the block group is freed. | |
657 | */ | |
658 | struct list_head block_group_list; | |
6324fbf3 CM |
659 | }; |
660 | ||
9078a3e1 CM |
661 | struct btrfs_block_group_cache { |
662 | struct btrfs_key key; | |
663 | struct btrfs_block_group_item item; | |
c286ac48 | 664 | spinlock_t lock; |
ea6a478e | 665 | struct mutex cache_mutex; |
324ae4df | 666 | u64 pinned; |
e8569813 | 667 | u64 reserved; |
0b86a832 CM |
668 | u64 flags; |
669 | int cached; | |
8f18cf13 | 670 | int ro; |
0f9dd46c JB |
671 | int dirty; |
672 | ||
673 | struct btrfs_space_info *space_info; | |
674 | ||
675 | /* free space cache stuff */ | |
6226cb0a | 676 | spinlock_t tree_lock; |
0f9dd46c JB |
677 | struct rb_root free_space_bytes; |
678 | struct rb_root free_space_offset; | |
679 | ||
680 | /* block group cache stuff */ | |
681 | struct rb_node cache_node; | |
682 | ||
683 | /* for block groups in the same raid type */ | |
684 | struct list_head list; | |
d2fb3437 YZ |
685 | |
686 | /* usage count */ | |
687 | atomic_t count; | |
fa9c0d79 CM |
688 | |
689 | /* List of struct btrfs_free_clusters for this block group. | |
690 | * Today it will only have one thing on it, but that may change | |
691 | */ | |
692 | struct list_head cluster_list; | |
9078a3e1 | 693 | }; |
0b86a832 | 694 | |
e4657689 ZY |
695 | struct btrfs_leaf_ref_tree { |
696 | struct rb_root root; | |
697 | struct list_head list; | |
698 | spinlock_t lock; | |
699 | }; | |
700 | ||
0b86a832 | 701 | struct btrfs_device; |
8a4b83cc | 702 | struct btrfs_fs_devices; |
9f5fae2f | 703 | struct btrfs_fs_info { |
5f39d397 | 704 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 705 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
706 | struct btrfs_root *extent_root; |
707 | struct btrfs_root *tree_root; | |
0b86a832 CM |
708 | struct btrfs_root *chunk_root; |
709 | struct btrfs_root *dev_root; | |
3de4586c | 710 | struct btrfs_root *fs_root; |
d20f7043 | 711 | struct btrfs_root *csum_root; |
e02119d5 CM |
712 | |
713 | /* the log root tree is a directory of all the other log roots */ | |
714 | struct btrfs_root *log_root_tree; | |
0f7d52f4 | 715 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 716 | |
0f9dd46c JB |
717 | /* block group cache stuff */ |
718 | spinlock_t block_group_cache_lock; | |
719 | struct rb_root block_group_cache_tree; | |
720 | ||
d1310b2e | 721 | struct extent_io_tree pinned_extents; |
1a5bc167 | 722 | |
0b86a832 CM |
723 | /* logical->physical extent mapping */ |
724 | struct btrfs_mapping_tree mapping_tree; | |
725 | ||
293ffd5f | 726 | u64 generation; |
15ee9bc7 | 727 | u64 last_trans_committed; |
12fcfd22 CM |
728 | |
729 | /* | |
730 | * this is updated to the current trans every time a full commit | |
731 | * is required instead of the faster short fsync log commits | |
732 | */ | |
733 | u64 last_trans_log_full_commit; | |
9ca9ee09 | 734 | u64 open_ioctl_trans; |
b6cda9bc | 735 | unsigned long mount_opt; |
c59f8951 | 736 | u64 max_extent; |
6f568d35 | 737 | u64 max_inline; |
8f662a76 | 738 | u64 alloc_start; |
79154b1b | 739 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 740 | wait_queue_head_t transaction_throttle; |
f9295749 | 741 | wait_queue_head_t transaction_wait; |
771ed689 | 742 | wait_queue_head_t async_submit_wait; |
e02119d5 | 743 | |
4b52dff6 | 744 | struct btrfs_super_block super_copy; |
a061fc8d | 745 | struct btrfs_super_block super_for_commit; |
0b86a832 | 746 | struct block_device *__bdev; |
e20d96d6 | 747 | struct super_block *sb; |
d98237b3 | 748 | struct inode *btree_inode; |
04160088 | 749 | struct backing_dev_info bdi; |
79154b1b | 750 | struct mutex trans_mutex; |
e02119d5 | 751 | struct mutex tree_log_mutex; |
a74a4b97 CM |
752 | struct mutex transaction_kthread_mutex; |
753 | struct mutex cleaner_mutex; | |
925baedd | 754 | struct mutex chunk_mutex; |
a2135011 | 755 | struct mutex drop_mutex; |
7d9eb12c | 756 | struct mutex volume_mutex; |
1a40e23b | 757 | struct mutex tree_reloc_mutex; |
c3e69d58 | 758 | |
5a3f23d5 CM |
759 | /* |
760 | * this protects the ordered operations list only while we are | |
761 | * processing all of the entries on it. This way we make | |
762 | * sure the commit code doesn't find the list temporarily empty | |
763 | * because another function happens to be doing non-waiting preflush | |
764 | * before jumping into the main commit. | |
765 | */ | |
766 | struct mutex ordered_operations_mutex; | |
767 | ||
8fd17795 | 768 | struct list_head trans_list; |
19c00ddc | 769 | struct list_head hashers; |
facda1e7 | 770 | struct list_head dead_roots; |
e02119d5 | 771 | |
cb03c743 | 772 | atomic_t nr_async_submits; |
8c8bee1d | 773 | atomic_t async_submit_draining; |
0986fe9e | 774 | atomic_t nr_async_bios; |
771ed689 | 775 | atomic_t async_delalloc_pages; |
ce9adaa5 | 776 | |
3eaa2885 CM |
777 | /* |
778 | * this is used by the balancing code to wait for all the pending | |
779 | * ordered extents | |
780 | */ | |
781 | spinlock_t ordered_extent_lock; | |
5a3f23d5 CM |
782 | |
783 | /* | |
784 | * all of the data=ordered extents pending writeback | |
785 | * these can span multiple transactions and basically include | |
786 | * every dirty data page that isn't from nodatacow | |
787 | */ | |
3eaa2885 | 788 | struct list_head ordered_extents; |
5a3f23d5 CM |
789 | |
790 | /* | |
791 | * all of the inodes that have delalloc bytes. It is possible for | |
792 | * this list to be empty even when there is still dirty data=ordered | |
793 | * extents waiting to finish IO. | |
794 | */ | |
ea8c2819 | 795 | struct list_head delalloc_inodes; |
3eaa2885 | 796 | |
5a3f23d5 CM |
797 | /* |
798 | * special rename and truncate targets that must be on disk before | |
799 | * we're allowed to commit. This is basically the ext3 style | |
800 | * data=ordered list. | |
801 | */ | |
802 | struct list_head ordered_operations; | |
803 | ||
8b712842 CM |
804 | /* |
805 | * there is a pool of worker threads for checksumming during writes | |
806 | * and a pool for checksumming after reads. This is because readers | |
807 | * can run with FS locks held, and the writers may be waiting for | |
808 | * those locks. We don't want ordering in the pending list to cause | |
809 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
810 | * |
811 | * A third pool does submit_bio to avoid deadlocking with the other | |
812 | * two | |
8b712842 CM |
813 | */ |
814 | struct btrfs_workers workers; | |
771ed689 | 815 | struct btrfs_workers delalloc_workers; |
8b712842 | 816 | struct btrfs_workers endio_workers; |
d20f7043 | 817 | struct btrfs_workers endio_meta_workers; |
cad321ad | 818 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 819 | struct btrfs_workers endio_write_workers; |
1cc127b5 | 820 | struct btrfs_workers submit_workers; |
247e743c CM |
821 | /* |
822 | * fixup workers take dirty pages that didn't properly go through | |
823 | * the cow mechanism and make them safe to write. It happens | |
824 | * for the sys_munmap function call path | |
825 | */ | |
826 | struct btrfs_workers fixup_workers; | |
a74a4b97 CM |
827 | struct task_struct *transaction_kthread; |
828 | struct task_struct *cleaner_kthread; | |
4543df7e | 829 | int thread_pool_size; |
8b712842 | 830 | |
1a40e23b | 831 | /* tree relocation relocated fields */ |
1a40e23b ZY |
832 | struct list_head dead_reloc_roots; |
833 | struct btrfs_leaf_ref_tree reloc_ref_tree; | |
e4657689 ZY |
834 | struct btrfs_leaf_ref_tree shared_ref_tree; |
835 | ||
58176a96 JB |
836 | struct kobject super_kobj; |
837 | struct completion kobj_unregister; | |
e66f709b | 838 | int do_barriers; |
facda1e7 | 839 | int closing; |
e02119d5 | 840 | int log_root_recovering; |
a2135011 | 841 | atomic_t throttles; |
ab78c84d | 842 | atomic_t throttle_gen; |
9f5fae2f | 843 | |
324ae4df | 844 | u64 total_pinned; |
b9473439 CM |
845 | |
846 | /* protected by the delalloc lock, used to keep from writing | |
847 | * metadata until there is a nice batch | |
848 | */ | |
849 | u64 dirty_metadata_bytes; | |
0b86a832 CM |
850 | struct list_head dirty_cowonly_roots; |
851 | ||
8a4b83cc | 852 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
853 | |
854 | /* | |
855 | * the space_info list is almost entirely read only. It only changes | |
856 | * when we add a new raid type to the FS, and that happens | |
857 | * very rarely. RCU is used to protect it. | |
858 | */ | |
6324fbf3 | 859 | struct list_head space_info; |
4184ea7f | 860 | |
1832a6d5 | 861 | spinlock_t delalloc_lock; |
cee36a03 | 862 | spinlock_t new_trans_lock; |
1832a6d5 | 863 | u64 delalloc_bytes; |
fa9c0d79 CM |
864 | |
865 | /* data_alloc_cluster is only used in ssd mode */ | |
866 | struct btrfs_free_cluster data_alloc_cluster; | |
867 | ||
868 | /* all metadata allocations go through this cluster */ | |
869 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 870 | |
31153d81 YZ |
871 | spinlock_t ref_cache_lock; |
872 | u64 total_ref_cache_size; | |
31153d81 | 873 | |
d18a2c44 CM |
874 | u64 avail_data_alloc_bits; |
875 | u64 avail_metadata_alloc_bits; | |
876 | u64 avail_system_alloc_bits; | |
877 | u64 data_alloc_profile; | |
878 | u64 metadata_alloc_profile; | |
879 | u64 system_alloc_profile; | |
788f20eb CM |
880 | |
881 | void *bdev_holder; | |
324ae4df | 882 | }; |
0b86a832 | 883 | |
9f5fae2f CM |
884 | /* |
885 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 886 | * and for the extent tree extent_root root. |
9f5fae2f | 887 | */ |
f321e491 | 888 | struct btrfs_dirty_root; |
9f5fae2f | 889 | struct btrfs_root { |
5f39d397 | 890 | struct extent_buffer *node; |
925baedd CM |
891 | |
892 | /* the node lock is held while changing the node pointer */ | |
893 | spinlock_t node_lock; | |
894 | ||
5f39d397 | 895 | struct extent_buffer *commit_root; |
31153d81 | 896 | struct btrfs_leaf_ref_tree *ref_tree; |
017e5369 | 897 | struct btrfs_leaf_ref_tree ref_tree_struct; |
f321e491 | 898 | struct btrfs_dirty_root *dirty_root; |
e02119d5 | 899 | struct btrfs_root *log_root; |
1a40e23b | 900 | struct btrfs_root *reloc_root; |
31153d81 | 901 | |
62e2749e CM |
902 | struct btrfs_root_item root_item; |
903 | struct btrfs_key root_key; | |
9f5fae2f | 904 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
905 | struct extent_io_tree dirty_log_pages; |
906 | ||
58176a96 JB |
907 | struct kobject root_kobj; |
908 | struct completion kobj_unregister; | |
a2135011 | 909 | struct mutex objectid_mutex; |
7237f183 | 910 | |
e02119d5 | 911 | struct mutex log_mutex; |
7237f183 YZ |
912 | wait_queue_head_t log_writer_wait; |
913 | wait_queue_head_t log_commit_wait[2]; | |
914 | atomic_t log_writers; | |
915 | atomic_t log_commit[2]; | |
916 | unsigned long log_transid; | |
917 | unsigned long log_batch; | |
ea8c2819 | 918 | |
0f7d52f4 CM |
919 | u64 objectid; |
920 | u64 last_trans; | |
5f39d397 CM |
921 | |
922 | /* data allocations are done in sectorsize units */ | |
923 | u32 sectorsize; | |
924 | ||
925 | /* node allocations are done in nodesize units */ | |
926 | u32 nodesize; | |
927 | ||
928 | /* leaf allocations are done in leafsize units */ | |
929 | u32 leafsize; | |
930 | ||
87ee04eb CM |
931 | u32 stripesize; |
932 | ||
9f5fae2f | 933 | u32 type; |
1b05da2e CM |
934 | u64 highest_inode; |
935 | u64 last_inode_alloc; | |
9f3a7427 | 936 | int ref_cows; |
0b86a832 | 937 | int track_dirty; |
3f157a2f | 938 | u64 defrag_trans_start; |
6702ed49 | 939 | struct btrfs_key defrag_progress; |
0ef3e66b | 940 | struct btrfs_key defrag_max; |
6702ed49 CM |
941 | int defrag_running; |
942 | int defrag_level; | |
58176a96 | 943 | char *name; |
4313b399 | 944 | int in_sysfs; |
0b86a832 CM |
945 | |
946 | /* the dirty list is only used by non-reference counted roots */ | |
947 | struct list_head dirty_list; | |
7b128766 | 948 | |
bcc63abb Y |
949 | spinlock_t list_lock; |
950 | struct list_head dead_list; | |
7b128766 | 951 | struct list_head orphan_list; |
3394e160 CM |
952 | |
953 | /* | |
954 | * right now this just gets used so that a root has its own devid | |
955 | * for stat. It may be used for more later | |
956 | */ | |
957 | struct super_block anon_super; | |
62e2749e CM |
958 | }; |
959 | ||
1e1d2701 | 960 | /* |
0b86a832 | 961 | |
1e1d2701 CM |
962 | * inode items have the data typically returned from stat and store other |
963 | * info about object characteristics. There is one for every file and dir in | |
964 | * the FS | |
965 | */ | |
9078a3e1 | 966 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af CM |
967 | #define BTRFS_INODE_REF_KEY 12 |
968 | #define BTRFS_XATTR_ITEM_KEY 24 | |
969 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 970 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
971 | |
972 | /* | |
973 | * dir items are the name -> inode pointers in a directory. There is one | |
974 | * for every name in a directory. | |
975 | */ | |
0660b5af CM |
976 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
977 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
978 | #define BTRFS_DIR_ITEM_KEY 84 | |
979 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 980 | /* |
9078a3e1 | 981 | * extent data is for file data |
1e1d2701 | 982 | */ |
0660b5af | 983 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 984 | |
f254e52c | 985 | /* |
d20f7043 CM |
986 | * extent csums are stored in a separate tree and hold csums for |
987 | * an entire extent on disk. | |
f254e52c | 988 | */ |
d20f7043 | 989 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 990 | |
1e1d2701 CM |
991 | /* |
992 | * root items point to tree roots. There are typically in the root | |
993 | * tree used by the super block to find all the other trees | |
994 | */ | |
0660b5af CM |
995 | #define BTRFS_ROOT_ITEM_KEY 132 |
996 | ||
997 | /* | |
998 | * root backrefs tie subvols and snapshots to the directory entries that | |
999 | * reference them | |
1000 | */ | |
1001 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1002 | ||
1003 | /* | |
1004 | * root refs make a fast index for listing all of the snapshots and | |
1005 | * subvolumes referenced by a given root. They point directly to the | |
1006 | * directory item in the root that references the subvol | |
1007 | */ | |
1008 | #define BTRFS_ROOT_REF_KEY 156 | |
1009 | ||
1e1d2701 CM |
1010 | /* |
1011 | * extent items are in the extent map tree. These record which blocks | |
1012 | * are used, and how many references there are to each block | |
1013 | */ | |
0660b5af CM |
1014 | #define BTRFS_EXTENT_ITEM_KEY 168 |
1015 | #define BTRFS_EXTENT_REF_KEY 180 | |
9078a3e1 CM |
1016 | |
1017 | /* | |
1018 | * block groups give us hints into the extent allocation trees. Which | |
1019 | * blocks are free etc etc | |
1020 | */ | |
0660b5af | 1021 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 1022 | |
0660b5af CM |
1023 | #define BTRFS_DEV_EXTENT_KEY 204 |
1024 | #define BTRFS_DEV_ITEM_KEY 216 | |
1025 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 1026 | |
1e1d2701 CM |
1027 | /* |
1028 | * string items are for debugging. They just store a short string of | |
1029 | * data in the FS | |
1030 | */ | |
9078a3e1 CM |
1031 | #define BTRFS_STRING_ITEM_KEY 253 |
1032 | ||
21ad10cf CM |
1033 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1034 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1035 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1036 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1037 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1038 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1039 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1040 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
b6cda9bc CM |
1041 | |
1042 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
1043 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
1044 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
1045 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
1046 | /* |
1047 | * Inode flags | |
1048 | */ | |
fdebe2bd Y |
1049 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1050 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1051 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1052 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1053 | #define BTRFS_INODE_PREALLOC (1 << 4) |
b98b6767 Y |
1054 | #define btrfs_clear_flag(inode, flag) (BTRFS_I(inode)->flags &= \ |
1055 | ~BTRFS_INODE_##flag) | |
1056 | #define btrfs_set_flag(inode, flag) (BTRFS_I(inode)->flags |= \ | |
1057 | BTRFS_INODE_##flag) | |
1058 | #define btrfs_test_flag(inode, flag) (BTRFS_I(inode)->flags & \ | |
1059 | BTRFS_INODE_##flag) | |
5f39d397 CM |
1060 | /* some macros to generate set/get funcs for the struct fields. This |
1061 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
1062 | * one for u8: | |
1063 | */ | |
1064 | #define le8_to_cpu(v) (v) | |
1065 | #define cpu_to_le8(v) (v) | |
1066 | #define __le8 u8 | |
1067 | ||
1068 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1069 | read_extent_buffer(eb, (char *)(result), \ | |
1070 | ((unsigned long)(ptr)) + \ | |
1071 | offsetof(type, member), \ | |
1072 | sizeof(((type *)0)->member))) | |
1073 | ||
1074 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1075 | write_extent_buffer(eb, (char *)(result), \ | |
1076 | ((unsigned long)(ptr)) + \ | |
1077 | offsetof(type, member), \ | |
1078 | sizeof(((type *)0)->member))) | |
1079 | ||
0f82731f | 1080 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 1081 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
1082 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
1083 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
1084 | #endif | |
5f39d397 CM |
1085 | |
1086 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1087 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1088 | { \ | |
df68b8a7 DM |
1089 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1090 | u##bits res = le##bits##_to_cpu(p->member); \ | |
1091 | kunmap_atomic(p, KM_USER0); \ | |
810191ff | 1092 | return res; \ |
5f39d397 CM |
1093 | } \ |
1094 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1095 | u##bits val) \ | |
1096 | { \ | |
df68b8a7 DM |
1097 | type *p = kmap_atomic(eb->first_page, KM_USER0); \ |
1098 | p->member = cpu_to_le##bits(val); \ | |
1099 | kunmap_atomic(p, KM_USER0); \ | |
5f39d397 | 1100 | } |
9078a3e1 | 1101 | |
5f39d397 CM |
1102 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1103 | static inline u##bits btrfs_##name(type *s) \ | |
1104 | { \ | |
1105 | return le##bits##_to_cpu(s->member); \ | |
1106 | } \ | |
1107 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1108 | { \ | |
1109 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1110 | } |
1111 | ||
0b86a832 CM |
1112 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1113 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1114 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1115 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1116 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1117 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1118 | start_offset, 64); | |
0b86a832 CM |
1119 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1120 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1121 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1122 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1123 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1124 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1125 | |
8a4b83cc CM |
1126 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1127 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1128 | total_bytes, 64); | |
1129 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1130 | bytes_used, 64); | |
1131 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1132 | io_align, 32); | |
1133 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1134 | io_width, 32); | |
1135 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1136 | sector_size, 32); | |
1137 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1138 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1139 | dev_group, 32); | |
1140 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1141 | seek_speed, 8); | |
1142 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1143 | bandwidth, 8); | |
2b82032c YZ |
1144 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1145 | generation, 64); | |
8a4b83cc | 1146 | |
0b86a832 CM |
1147 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1148 | { | |
1149 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1150 | } | |
1151 | ||
2b82032c YZ |
1152 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1153 | { | |
1154 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1155 | } | |
1156 | ||
e17cade2 | 1157 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1158 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1159 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1160 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1161 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1162 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1163 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1164 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1165 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1166 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1167 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1168 | ||
e17cade2 CM |
1169 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1170 | { | |
1171 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1172 | } | |
1173 | ||
1174 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1175 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1176 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1177 | stripe_len, 64); | |
1178 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1179 | io_align, 32); | |
1180 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1181 | io_width, 32); | |
1182 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1183 | sector_size, 32); | |
1184 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1185 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1186 | num_stripes, 16); | |
321aecc6 CM |
1187 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1188 | sub_stripes, 16); | |
0b86a832 CM |
1189 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1190 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1191 | ||
1192 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1193 | int nr) | |
1194 | { | |
1195 | unsigned long offset = (unsigned long)c; | |
1196 | offset += offsetof(struct btrfs_chunk, stripe); | |
1197 | offset += nr * sizeof(struct btrfs_stripe); | |
1198 | return (struct btrfs_stripe *)offset; | |
1199 | } | |
1200 | ||
a443755f CM |
1201 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1202 | { | |
1203 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1204 | } | |
1205 | ||
0b86a832 CM |
1206 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1207 | struct btrfs_chunk *c, int nr) | |
1208 | { | |
1209 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1210 | } | |
1211 | ||
1212 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, | |
1213 | struct btrfs_chunk *c, int nr, | |
1214 | u64 val) | |
1215 | { | |
1216 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
1217 | } | |
1218 | ||
1219 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, | |
1220 | struct btrfs_chunk *c, int nr) | |
1221 | { | |
1222 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1223 | } | |
1224 | ||
1225 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, | |
1226 | struct btrfs_chunk *c, int nr, | |
1227 | u64 val) | |
1228 | { | |
1229 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
1230 | } | |
1231 | ||
5f39d397 CM |
1232 | /* struct btrfs_block_group_item */ |
1233 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1234 | used, 64); | |
1235 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1236 | used, 64); | |
0b86a832 CM |
1237 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1238 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1239 | |
1240 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1241 | struct btrfs_block_group_item, chunk_objectid, 64); |
1242 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1243 | struct btrfs_block_group_item, flags, 64); | |
1244 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1245 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1246 | |
3954401f CM |
1247 | /* struct btrfs_inode_ref */ |
1248 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1249 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1250 | |
5f39d397 CM |
1251 | /* struct btrfs_inode_item */ |
1252 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1253 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1254 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1255 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1256 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1257 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1258 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1259 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1260 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1261 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1262 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1263 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 1264 | |
0b86a832 | 1265 | static inline struct btrfs_timespec * |
5f39d397 | 1266 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1267 | { |
5f39d397 CM |
1268 | unsigned long ptr = (unsigned long)inode_item; |
1269 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1270 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1271 | } |
1272 | ||
0b86a832 | 1273 | static inline struct btrfs_timespec * |
5f39d397 | 1274 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1275 | { |
5f39d397 CM |
1276 | unsigned long ptr = (unsigned long)inode_item; |
1277 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1278 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1279 | } |
1280 | ||
0b86a832 | 1281 | static inline struct btrfs_timespec * |
5f39d397 | 1282 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1283 | { |
5f39d397 CM |
1284 | unsigned long ptr = (unsigned long)inode_item; |
1285 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1286 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1287 | } |
1288 | ||
0b86a832 | 1289 | static inline struct btrfs_timespec * |
5f39d397 | 1290 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1291 | { |
5f39d397 CM |
1292 | unsigned long ptr = (unsigned long)inode_item; |
1293 | ptr += offsetof(struct btrfs_inode_item, otime); | |
0b86a832 | 1294 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1295 | } |
1296 | ||
0b86a832 CM |
1297 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1298 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1299 | |
0b86a832 | 1300 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1301 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1302 | chunk_tree, 64); | |
1303 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1304 | chunk_objectid, 64); | |
1305 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1306 | chunk_offset, 64); | |
0b86a832 CM |
1307 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1308 | ||
e17cade2 CM |
1309 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1310 | { | |
1311 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1312 | return (u8 *)((unsigned long)dev + ptr); | |
1313 | } | |
1314 | ||
74493f7a CM |
1315 | /* struct btrfs_extent_ref */ |
1316 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
1317 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
1318 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
31840ae1 | 1319 | BTRFS_SETGET_FUNCS(ref_num_refs, struct btrfs_extent_ref, num_refs, 32); |
74493f7a | 1320 | |
7bb86316 CM |
1321 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
1322 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 1323 | generation, 64); |
7bb86316 CM |
1324 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
1325 | objectid, 64); | |
31840ae1 ZY |
1326 | BTRFS_SETGET_STACK_FUNCS(stack_ref_num_refs, struct btrfs_extent_ref, |
1327 | num_refs, 32); | |
e20d96d6 | 1328 | |
31840ae1 ZY |
1329 | /* struct btrfs_extent_item */ |
1330 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
5f39d397 CM |
1331 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
1332 | refs, 32); | |
e20d96d6 | 1333 | |
5f39d397 CM |
1334 | /* struct btrfs_node */ |
1335 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1336 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1337 | |
5f39d397 | 1338 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1339 | { |
5f39d397 CM |
1340 | unsigned long ptr; |
1341 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1342 | sizeof(struct btrfs_key_ptr) * nr; | |
1343 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1344 | } |
1345 | ||
5f39d397 CM |
1346 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1347 | int nr, u64 val) | |
cf27e1ee | 1348 | { |
5f39d397 CM |
1349 | unsigned long ptr; |
1350 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1351 | sizeof(struct btrfs_key_ptr) * nr; | |
1352 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1353 | } |
1354 | ||
74493f7a CM |
1355 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1356 | { | |
1357 | unsigned long ptr; | |
1358 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1359 | sizeof(struct btrfs_key_ptr) * nr; | |
1360 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1361 | } | |
1362 | ||
1363 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1364 | int nr, u64 val) | |
1365 | { | |
1366 | unsigned long ptr; | |
1367 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1368 | sizeof(struct btrfs_key_ptr) * nr; | |
1369 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1370 | } | |
1371 | ||
810191ff | 1372 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1373 | { |
5f39d397 CM |
1374 | return offsetof(struct btrfs_node, ptrs) + |
1375 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1376 | } |
1377 | ||
e644d021 CM |
1378 | void btrfs_node_key(struct extent_buffer *eb, |
1379 | struct btrfs_disk_key *disk_key, int nr); | |
1380 | ||
5f39d397 CM |
1381 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1382 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1383 | { |
5f39d397 CM |
1384 | unsigned long ptr; |
1385 | ptr = btrfs_node_key_ptr_offset(nr); | |
1386 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1387 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1388 | } |
1389 | ||
5f39d397 CM |
1390 | /* struct btrfs_item */ |
1391 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1392 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1393 | |
5f39d397 | 1394 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1395 | { |
5f39d397 CM |
1396 | return offsetof(struct btrfs_leaf, items) + |
1397 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1398 | } |
1399 | ||
5f39d397 CM |
1400 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1401 | int nr) | |
0783fcfc | 1402 | { |
5f39d397 | 1403 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1404 | } |
1405 | ||
5f39d397 CM |
1406 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1407 | struct btrfs_item *item) | |
0783fcfc | 1408 | { |
5f39d397 | 1409 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1410 | } |
1411 | ||
5f39d397 | 1412 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1413 | { |
5f39d397 | 1414 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1415 | } |
1416 | ||
5f39d397 | 1417 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1418 | { |
5f39d397 | 1419 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1420 | } |
1421 | ||
5f39d397 | 1422 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1423 | { |
5f39d397 | 1424 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1425 | } |
1426 | ||
5f39d397 CM |
1427 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1428 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1429 | { |
5f39d397 CM |
1430 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1431 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1432 | } |
1433 | ||
5f39d397 CM |
1434 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1435 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1436 | { |
5f39d397 CM |
1437 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1438 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1439 | } |
1440 | ||
e02119d5 CM |
1441 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1442 | ||
0660b5af CM |
1443 | /* |
1444 | * struct btrfs_root_ref | |
1445 | */ | |
1446 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1447 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1448 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1449 | ||
5f39d397 | 1450 | /* struct btrfs_dir_item */ |
5103e947 | 1451 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1452 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1453 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1454 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1455 | |
5f39d397 CM |
1456 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1457 | struct btrfs_dir_item *item, | |
1458 | struct btrfs_disk_key *key) | |
1d4f6404 | 1459 | { |
5f39d397 | 1460 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1461 | } |
1462 | ||
5f39d397 CM |
1463 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1464 | struct btrfs_dir_item *item, | |
1465 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1466 | { |
5f39d397 | 1467 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1468 | } |
1469 | ||
5f39d397 CM |
1470 | /* struct btrfs_disk_key */ |
1471 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1472 | objectid, 64); | |
1473 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1474 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1475 | |
e2fa7227 CM |
1476 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1477 | struct btrfs_disk_key *disk) | |
1478 | { | |
1479 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1480 | cpu->type = disk->type; |
e2fa7227 CM |
1481 | cpu->objectid = le64_to_cpu(disk->objectid); |
1482 | } | |
1483 | ||
1484 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1485 | struct btrfs_key *cpu) | |
1486 | { | |
1487 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1488 | disk->type = cpu->type; |
e2fa7227 CM |
1489 | disk->objectid = cpu_to_le64(cpu->objectid); |
1490 | } | |
1491 | ||
5f39d397 CM |
1492 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1493 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1494 | { |
5f39d397 CM |
1495 | struct btrfs_disk_key disk_key; |
1496 | btrfs_node_key(eb, &disk_key, nr); | |
1497 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1498 | } |
1499 | ||
5f39d397 CM |
1500 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1501 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1502 | { |
5f39d397 CM |
1503 | struct btrfs_disk_key disk_key; |
1504 | btrfs_item_key(eb, &disk_key, nr); | |
1505 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1506 | } |
1507 | ||
5f39d397 CM |
1508 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1509 | struct btrfs_dir_item *item, | |
1510 | struct btrfs_key *key) | |
4d775673 | 1511 | { |
5f39d397 CM |
1512 | struct btrfs_disk_key disk_key; |
1513 | btrfs_dir_item_key(eb, item, &disk_key); | |
1514 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1515 | } |
1516 | ||
58176a96 | 1517 | |
5f39d397 | 1518 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1519 | { |
5f39d397 | 1520 | return key->type; |
3768f368 CM |
1521 | } |
1522 | ||
5f39d397 | 1523 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1524 | { |
5f39d397 | 1525 | key->type = val; |
3768f368 CM |
1526 | } |
1527 | ||
5f39d397 | 1528 | /* struct btrfs_header */ |
db94535d | 1529 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1530 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1531 | generation, 64); | |
1532 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1533 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1534 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1535 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 1536 | |
63b10fc4 CM |
1537 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1538 | { | |
1539 | return (btrfs_header_flags(eb) & flag) == flag; | |
1540 | } | |
1541 | ||
1542 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1543 | { | |
1544 | u64 flags = btrfs_header_flags(eb); | |
1545 | btrfs_set_header_flags(eb, flags | flag); | |
1546 | return (flags & flag) == flag; | |
1547 | } | |
1548 | ||
1549 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
1550 | { | |
1551 | u64 flags = btrfs_header_flags(eb); | |
1552 | btrfs_set_header_flags(eb, flags & ~flag); | |
1553 | return (flags & flag) == flag; | |
1554 | } | |
1555 | ||
5f39d397 | 1556 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 1557 | { |
5f39d397 CM |
1558 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
1559 | return (u8 *)ptr; | |
0f7d52f4 CM |
1560 | } |
1561 | ||
e17cade2 CM |
1562 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
1563 | { | |
1564 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
1565 | return (u8 *)ptr; | |
1566 | } | |
1567 | ||
5f39d397 | 1568 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 1569 | { |
5f39d397 CM |
1570 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
1571 | return (u8 *)ptr; | |
3768f368 CM |
1572 | } |
1573 | ||
5f39d397 | 1574 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 1575 | { |
5f39d397 CM |
1576 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
1577 | return (u8 *)ptr; | |
3768f368 CM |
1578 | } |
1579 | ||
5f39d397 | 1580 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 1581 | { |
5f39d397 | 1582 | return NULL; |
3768f368 CM |
1583 | } |
1584 | ||
5f39d397 | 1585 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 1586 | { |
5f39d397 | 1587 | return NULL; |
3768f368 CM |
1588 | } |
1589 | ||
5f39d397 | 1590 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 1591 | { |
5f39d397 | 1592 | return NULL; |
3768f368 CM |
1593 | } |
1594 | ||
5f39d397 | 1595 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 1596 | { |
d397712b | 1597 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
1598 | } |
1599 | ||
5f39d397 | 1600 | /* struct btrfs_root_item */ |
84234f3a YZ |
1601 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
1602 | generation, 64); | |
5f39d397 | 1603 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
1604 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
1605 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 1606 | |
84234f3a YZ |
1607 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
1608 | generation, 64); | |
db94535d CM |
1609 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
1610 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
1611 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
1612 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 1613 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
1614 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
1615 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
1616 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
1617 | last_snapshot, 64); | |
123abc88 | 1618 | |
5f39d397 | 1619 | /* struct btrfs_super_block */ |
607d432d | 1620 | |
db94535d | 1621 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 1622 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
1623 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
1624 | generation, 64); | |
1625 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
1626 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
1627 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
1628 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
1629 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
1630 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
1631 | root_level, 8); | |
0b86a832 CM |
1632 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
1633 | chunk_root, 64); | |
1634 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
1635 | chunk_root_level, 8); |
1636 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
1637 | log_root, 64); | |
c3027eb5 CM |
1638 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
1639 | log_root_transid, 64); | |
e02119d5 CM |
1640 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
1641 | log_root_level, 8); | |
db94535d CM |
1642 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
1643 | total_bytes, 64); | |
1644 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
1645 | bytes_used, 64); | |
5f39d397 CM |
1646 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
1647 | sectorsize, 32); | |
1648 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
1649 | nodesize, 32); | |
1650 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
1651 | leafsize, 32); | |
87ee04eb CM |
1652 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
1653 | stripesize, 32); | |
5f39d397 CM |
1654 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
1655 | root_dir_objectid, 64); | |
8a4b83cc CM |
1656 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
1657 | num_devices, 64); | |
f2b636e8 JB |
1658 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
1659 | compat_flags, 64); | |
1660 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
1661 | compat_flags, 64); | |
1662 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, | |
1663 | incompat_flags, 64); | |
607d432d JB |
1664 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
1665 | csum_type, 16); | |
1666 | ||
1667 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
1668 | { | |
1669 | int t = btrfs_super_csum_type(s); | |
1670 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
1671 | return btrfs_csum_sizes[t]; | |
1672 | } | |
2e635a27 | 1673 | |
5f39d397 | 1674 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 1675 | { |
5f39d397 | 1676 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
1677 | } |
1678 | ||
5f39d397 CM |
1679 | /* struct btrfs_file_extent_item */ |
1680 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 1681 | |
d397712b CM |
1682 | static inline unsigned long |
1683 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 1684 | { |
5f39d397 | 1685 | unsigned long offset = (unsigned long)e; |
db94535d | 1686 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 1687 | return offset; |
236454df CM |
1688 | } |
1689 | ||
1690 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1691 | { | |
db94535d | 1692 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
1693 | } |
1694 | ||
db94535d CM |
1695 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
1696 | disk_bytenr, 64); | |
5f39d397 CM |
1697 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
1698 | generation, 64); | |
db94535d CM |
1699 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
1700 | disk_num_bytes, 64); | |
5f39d397 CM |
1701 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
1702 | offset, 64); | |
db94535d CM |
1703 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
1704 | num_bytes, 64); | |
c8b97818 CM |
1705 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
1706 | ram_bytes, 64); | |
1707 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
1708 | compression, 8); | |
1709 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
1710 | encryption, 8); | |
1711 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
1712 | other_encoding, 16); | |
1713 | ||
1714 | /* this returns the number of file bytes represented by the inline item. | |
1715 | * If an item is compressed, this is the uncompressed size | |
1716 | */ | |
1717 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
1718 | struct btrfs_file_extent_item *e) | |
1719 | { | |
1720 | return btrfs_file_extent_ram_bytes(eb, e); | |
1721 | } | |
1722 | ||
1723 | /* | |
1724 | * this returns the number of bytes used by the item on disk, minus the | |
1725 | * size of any extent headers. If a file is compressed on disk, this is | |
1726 | * the compressed size | |
1727 | */ | |
1728 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
1729 | struct btrfs_item *e) | |
1730 | { | |
1731 | unsigned long offset; | |
1732 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
1733 | return btrfs_item_size(eb, e) - offset; | |
1734 | } | |
9f5fae2f | 1735 | |
e20d96d6 CM |
1736 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1737 | { | |
1738 | return sb->s_fs_info; | |
1739 | } | |
1740 | ||
58176a96 JB |
1741 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
1742 | const char *name, int len) | |
1743 | { | |
1744 | /* if we already have a name just free it */ | |
d397712b | 1745 | kfree(root->name); |
58176a96 JB |
1746 | |
1747 | root->name = kmalloc(len+1, GFP_KERNEL); | |
1748 | if (!root->name) | |
1749 | return -ENOMEM; | |
1750 | ||
1751 | memcpy(root->name, name, len); | |
d397712b | 1752 | root->name[len] = '\0'; |
58176a96 JB |
1753 | |
1754 | return 0; | |
1755 | } | |
1756 | ||
d397712b CM |
1757 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
1758 | { | |
db94535d CM |
1759 | if (level == 0) |
1760 | return root->leafsize; | |
1761 | return root->nodesize; | |
1762 | } | |
1763 | ||
4beb1b8b CM |
1764 | /* helper function to cast into the data area of the leaf. */ |
1765 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 1766 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
1767 | btrfs_item_offset_nr(leaf, slot))) |
1768 | ||
1769 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1770 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1771 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 1772 | |
2b1f55b0 CM |
1773 | static inline struct dentry *fdentry(struct file *file) |
1774 | { | |
6da6abae | 1775 | return file->f_path.dentry; |
6da6abae CM |
1776 | } |
1777 | ||
b18c6685 | 1778 | /* extent-tree.c */ |
fa9c0d79 | 1779 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
1780 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
1781 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 1782 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
e02119d5 CM |
1783 | int btrfs_update_pinned_extents(struct btrfs_root *root, |
1784 | u64 bytenr, u64 num, int pin); | |
1785 | int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans, | |
1786 | struct btrfs_root *root, struct extent_buffer *leaf); | |
80ff3856 | 1787 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
17d217fe | 1788 | struct btrfs_root *root, u64 objectid, u64 bytenr); |
d1310b2e | 1789 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); |
d397712b CM |
1790 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
1791 | struct btrfs_fs_info *info, | |
1792 | u64 bytenr); | |
d2fb3437 YZ |
1793 | u64 btrfs_find_block_group(struct btrfs_root *root, |
1794 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 1795 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
7bb86316 | 1796 | struct btrfs_root *root, |
31840ae1 | 1797 | u32 blocksize, u64 parent, |
7bb86316 CM |
1798 | u64 root_objectid, |
1799 | u64 ref_generation, | |
7bb86316 CM |
1800 | int level, |
1801 | u64 hint, | |
1802 | u64 empty_size); | |
65b51a00 CM |
1803 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
1804 | struct btrfs_root *root, | |
4008c04a CM |
1805 | u64 bytenr, u32 blocksize, |
1806 | int level); | |
4d775673 | 1807 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 | 1808 | struct btrfs_root *root, |
31840ae1 | 1809 | u64 num_bytes, u64 parent, u64 min_bytes, |
98d20f67 | 1810 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1811 | u64 owner, u64 empty_size, u64 hint_byte, |
ec44a35c | 1812 | u64 search_end, struct btrfs_key *ins, u64 data); |
e6dcd2dc | 1813 | int btrfs_alloc_reserved_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1814 | struct btrfs_root *root, u64 parent, |
e6dcd2dc | 1815 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1816 | u64 owner, struct btrfs_key *ins); |
e02119d5 | 1817 | int btrfs_alloc_logged_extent(struct btrfs_trans_handle *trans, |
31840ae1 | 1818 | struct btrfs_root *root, u64 parent, |
e02119d5 | 1819 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1820 | u64 owner, struct btrfs_key *ins); |
e6dcd2dc CM |
1821 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
1822 | struct btrfs_root *root, | |
1823 | u64 num_bytes, u64 min_alloc_size, | |
1824 | u64 empty_size, u64 hint_byte, | |
1825 | u64 search_end, struct btrfs_key *ins, | |
1826 | u64 data); | |
e089f05c | 1827 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
31840ae1 ZY |
1828 | struct extent_buffer *orig_buf, struct extent_buffer *buf, |
1829 | u32 *nr_extents); | |
1830 | int btrfs_cache_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
1831 | struct extent_buffer *buf, u32 nr_extents); | |
1832 | int btrfs_update_ref(struct btrfs_trans_handle *trans, | |
1833 | struct btrfs_root *root, struct extent_buffer *orig_buf, | |
1834 | struct extent_buffer *buf, int start_slot, int nr); | |
1835 | int btrfs_free_extent(struct btrfs_trans_handle *trans, | |
1836 | struct btrfs_root *root, | |
1837 | u64 bytenr, u64 num_bytes, u64 parent, | |
7bb86316 | 1838 | u64 root_objectid, u64 ref_generation, |
3bb1a1bc | 1839 | u64 owner_objectid, int pin); |
65b51a00 | 1840 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
ccd467d6 CM |
1841 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
1842 | struct btrfs_root *root, | |
d1310b2e | 1843 | struct extent_io_tree *unpin); |
b18c6685 | 1844 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
1845 | struct btrfs_root *root, |
1846 | u64 bytenr, u64 num_bytes, u64 parent, | |
1847 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1848 | u64 owner_objectid); |
31840ae1 | 1849 | int btrfs_update_extent_ref(struct btrfs_trans_handle *trans, |
56bec294 | 1850 | struct btrfs_root *root, u64 bytenr, u64 num_bytes, |
31840ae1 ZY |
1851 | u64 orig_parent, u64 parent, |
1852 | u64 root_objectid, u64 ref_generation, | |
3bb1a1bc | 1853 | u64 owner_objectid); |
9078a3e1 CM |
1854 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1855 | struct btrfs_root *root); | |
d2fb3437 | 1856 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
1857 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
1858 | int btrfs_read_block_groups(struct btrfs_root *root); | |
0b86a832 CM |
1859 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
1860 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 1861 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 1862 | u64 size); |
1a40e23b ZY |
1863 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
1864 | struct btrfs_root *root, u64 group_start); | |
1865 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
f82d02d9 YZ |
1866 | int btrfs_free_reloc_root(struct btrfs_trans_handle *trans, |
1867 | struct btrfs_root *root); | |
1a40e23b | 1868 | int btrfs_drop_dead_reloc_roots(struct btrfs_root *root); |
1a40e23b ZY |
1869 | int btrfs_reloc_tree_cache_ref(struct btrfs_trans_handle *trans, |
1870 | struct btrfs_root *root, | |
1871 | struct extent_buffer *buf, u64 orig_start); | |
1872 | int btrfs_add_dead_reloc_root(struct btrfs_root *root); | |
1873 | int btrfs_cleanup_reloc_trees(struct btrfs_root *root); | |
17d217fe | 1874 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); |
2b82032c | 1875 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
6a63209f | 1876 | void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde); |
4184ea7f CM |
1877 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
1878 | ||
6a63209f JB |
1879 | int btrfs_check_metadata_free_space(struct btrfs_root *root); |
1880 | int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode, | |
1881 | u64 bytes); | |
1882 | void btrfs_free_reserved_data_space(struct btrfs_root *root, | |
1883 | struct inode *inode, u64 bytes); | |
1884 | void btrfs_delalloc_reserve_space(struct btrfs_root *root, struct inode *inode, | |
1885 | u64 bytes); | |
1886 | void btrfs_delalloc_free_space(struct btrfs_root *root, struct inode *inode, | |
1887 | u64 bytes); | |
dee26a9f | 1888 | /* ctree.c */ |
0b86a832 CM |
1889 | int btrfs_previous_item(struct btrfs_root *root, |
1890 | struct btrfs_path *path, u64 min_objectid, | |
1891 | int type); | |
1a40e23b ZY |
1892 | int btrfs_merge_path(struct btrfs_trans_handle *trans, |
1893 | struct btrfs_root *root, | |
1894 | struct btrfs_key *node_keys, | |
1895 | u64 *nodes, int lowest_level); | |
31840ae1 ZY |
1896 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
1897 | struct btrfs_root *root, struct btrfs_path *path, | |
1898 | struct btrfs_key *new_key); | |
925baedd CM |
1899 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
1900 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 1901 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
1902 | struct btrfs_key *key, int lowest_level, |
1903 | int cache_only, u64 min_trans); | |
1904 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 1905 | struct btrfs_key *max_key, |
3f157a2f CM |
1906 | struct btrfs_path *path, int cache_only, |
1907 | u64 min_trans); | |
5f39d397 CM |
1908 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
1909 | struct btrfs_root *root, struct extent_buffer *buf, | |
1910 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 1911 | struct extent_buffer **cow_ret); |
be20aa9d CM |
1912 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
1913 | struct btrfs_root *root, | |
1914 | struct extent_buffer *buf, | |
1915 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
6567e837 CM |
1916 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1917 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1918 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1919 | struct btrfs_root *root, | |
1920 | struct btrfs_path *path, | |
179e29e4 | 1921 | u32 new_size, int from_end); |
459931ec CM |
1922 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
1923 | struct btrfs_root *root, | |
1924 | struct btrfs_path *path, | |
1925 | struct btrfs_key *new_key, | |
1926 | unsigned long split_offset); | |
e089f05c CM |
1927 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1928 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1929 | ins_len, int cow); | |
6702ed49 | 1930 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 1931 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
1932 | int start_slot, int cache_only, u64 *last_ret, |
1933 | struct btrfs_key *progress); | |
234b63a0 | 1934 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1935 | struct btrfs_path *btrfs_alloc_path(void); |
1936 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 1937 | void btrfs_set_path_blocking(struct btrfs_path *p); |
b4ce94de CM |
1938 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
1939 | ||
85e21bac CM |
1940 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1941 | struct btrfs_path *path, int slot, int nr); | |
323ac95b CM |
1942 | int btrfs_del_leaf(struct btrfs_trans_handle *trans, |
1943 | struct btrfs_root *root, | |
1944 | struct btrfs_path *path, u64 bytenr); | |
85e21bac CM |
1945 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
1946 | struct btrfs_root *root, | |
1947 | struct btrfs_path *path) | |
1948 | { | |
1949 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
1950 | } | |
1951 | ||
e089f05c CM |
1952 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1953 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
f3465ca4 JB |
1954 | int btrfs_insert_some_items(struct btrfs_trans_handle *trans, |
1955 | struct btrfs_root *root, | |
1956 | struct btrfs_path *path, | |
1957 | struct btrfs_key *cpu_key, u32 *data_size, | |
1958 | int nr); | |
9c58309d CM |
1959 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
1960 | struct btrfs_root *root, | |
1961 | struct btrfs_path *path, | |
1962 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
1963 | ||
1964 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
1965 | struct btrfs_root *root, | |
1966 | struct btrfs_path *path, | |
1967 | struct btrfs_key *key, | |
1968 | u32 data_size) | |
1969 | { | |
1970 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
1971 | } | |
1972 | ||
234b63a0 | 1973 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 1974 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 1975 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 1976 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 1977 | *root); |
f82d02d9 YZ |
1978 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
1979 | struct btrfs_root *root, | |
1980 | struct extent_buffer *node, | |
1981 | struct extent_buffer *parent); | |
dee26a9f | 1982 | /* root-item.c */ |
ea9e8b11 CM |
1983 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
1984 | struct btrfs_path *path, | |
1985 | u64 root_id, u64 ref_id); | |
0660b5af CM |
1986 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
1987 | struct btrfs_root *tree_root, | |
1988 | u64 root_id, u8 type, u64 ref_id, | |
1989 | u64 dirid, u64 sequence, | |
1990 | const char *name, int name_len); | |
e089f05c CM |
1991 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1992 | struct btrfs_key *key); | |
1993 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1994 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1995 | *item); | |
1996 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1997 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1998 | *item); | |
1999 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
2000 | btrfs_root_item *item, struct btrfs_key *key); | |
bf4ef679 CM |
2001 | int btrfs_search_root(struct btrfs_root *root, u64 search_start, |
2002 | u64 *found_objectid); | |
5ce14bbc CM |
2003 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
2004 | struct btrfs_root *latest_root); | |
dee26a9f | 2005 | /* dir-item.c */ |
d397712b CM |
2006 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
2007 | struct btrfs_root *root, const char *name, | |
2008 | int name_len, u64 dir, | |
aec7477b | 2009 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
2010 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
2011 | struct btrfs_root *root, | |
2012 | struct btrfs_path *path, u64 dir, | |
2013 | const char *name, int name_len, | |
2014 | int mod); | |
2015 | struct btrfs_dir_item * | |
2016 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
2017 | struct btrfs_root *root, | |
2018 | struct btrfs_path *path, u64 dir, | |
2019 | u64 objectid, const char *name, int name_len, | |
2020 | int mod); | |
2021 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
2022 | struct btrfs_path *path, | |
7f5c1516 | 2023 | const char *name, int name_len); |
7e38180e CM |
2024 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
2025 | struct btrfs_root *root, | |
2026 | struct btrfs_path *path, | |
2027 | struct btrfs_dir_item *di); | |
5103e947 JB |
2028 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
2029 | struct btrfs_root *root, const char *name, | |
2030 | u16 name_len, const void *data, u16 data_len, | |
2031 | u64 dir); | |
2032 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
2033 | struct btrfs_root *root, | |
2034 | struct btrfs_path *path, u64 dir, | |
2035 | const char *name, u16 name_len, | |
2036 | int mod); | |
7b128766 JB |
2037 | |
2038 | /* orphan.c */ | |
2039 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
2040 | struct btrfs_root *root, u64 offset); | |
2041 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
2042 | struct btrfs_root *root, u64 offset); | |
2043 | ||
dee26a9f | 2044 | /* inode-map.c */ |
9f5fae2f CM |
2045 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
2046 | struct btrfs_root *fs_root, | |
2047 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
2048 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
2049 | ||
dee26a9f | 2050 | /* inode-item.c */ |
3954401f CM |
2051 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
2052 | struct btrfs_root *root, | |
2053 | const char *name, int name_len, | |
aec7477b | 2054 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
2055 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
2056 | struct btrfs_root *root, | |
2057 | const char *name, int name_len, | |
aec7477b | 2058 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
2059 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
2060 | struct btrfs_root *root, | |
2061 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 2062 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
2063 | *root, struct btrfs_path *path, |
2064 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
2065 | |
2066 | /* file-item.c */ | |
459931ec CM |
2067 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
2068 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 2069 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2070 | struct bio *bio, u32 *dst); |
b18c6685 | 2071 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
2072 | struct btrfs_root *root, |
2073 | u64 objectid, u64 pos, | |
2074 | u64 disk_offset, u64 disk_num_bytes, | |
2075 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
2076 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
2077 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
2078 | struct btrfs_root *root, | |
2079 | struct btrfs_path *path, u64 objectid, | |
db94535d | 2080 | u64 bytenr, int mod); |
065631f6 | 2081 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 2082 | struct btrfs_root *root, |
e6dcd2dc | 2083 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 2084 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2085 | struct bio *bio, u64 file_start, int contig); |
c8b97818 CM |
2086 | int btrfs_csum_file_bytes(struct btrfs_root *root, struct inode *inode, |
2087 | u64 start, unsigned long len); | |
b18c6685 CM |
2088 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
2089 | struct btrfs_root *root, | |
2090 | struct btrfs_path *path, | |
d20f7043 | 2091 | u64 bytenr, int cow); |
1de037a4 CM |
2092 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
2093 | struct btrfs_root *root, struct btrfs_path *path, | |
2094 | u64 isize); | |
17d217fe YZ |
2095 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, |
2096 | u64 end, struct list_head *list); | |
39279cc3 | 2097 | /* inode.c */ |
4881ee5a CM |
2098 | |
2099 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 2100 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
2101 | #define ClearPageChecked ClearPageFsMisc |
2102 | #define SetPageChecked SetPageFsMisc | |
2103 | #define PageChecked PageFsMisc | |
2104 | #endif | |
2105 | ||
3de4586c CM |
2106 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
2107 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
2108 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
2109 | struct btrfs_root *root, | |
2110 | struct inode *dir, struct inode *inode, | |
2111 | const char *name, int name_len); | |
2112 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
2113 | struct inode *parent_inode, struct inode *inode, | |
2114 | const char *name, int name_len, int add_backref, u64 index); | |
2115 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, | |
2116 | struct btrfs_root *root, | |
2117 | struct inode *inode, u64 new_size, | |
2118 | u32 min_type); | |
2119 | ||
ea8c2819 CM |
2120 | int btrfs_start_delalloc_inodes(struct btrfs_root *root); |
2121 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end); | |
f421950f CM |
2122 | int btrfs_writepages(struct address_space *mapping, |
2123 | struct writeback_control *wbc); | |
d2fb3437 YZ |
2124 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
2125 | struct btrfs_root *new_root, struct dentry *dentry, | |
2126 | u64 new_dirid, u64 alloc_hint); | |
239b14b3 | 2127 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 2128 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 2129 | |
edbd8d4e CM |
2130 | unsigned long btrfs_force_ra(struct address_space *mapping, |
2131 | struct file_ra_state *ra, struct file *file, | |
2132 | pgoff_t offset, pgoff_t last_index); | |
9ebefb18 CM |
2133 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
2134 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 | 2135 | void btrfs_delete_inode(struct inode *inode); |
2da98f00 | 2136 | void btrfs_put_inode(struct inode *inode); |
39279cc3 CM |
2137 | void btrfs_read_locked_inode(struct inode *inode); |
2138 | int btrfs_write_inode(struct inode *inode, int wait); | |
2139 | void btrfs_dirty_inode(struct inode *inode); | |
2140 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
2141 | void btrfs_destroy_inode(struct inode *inode); | |
2142 | int btrfs_init_cachep(void); | |
2143 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 2144 | long btrfs_ioctl_trans_end(struct file *file); |
5b21f2ed ZY |
2145 | struct inode *btrfs_ilookup(struct super_block *s, u64 objectid, |
2146 | struct btrfs_root *root, int wait); | |
39279cc3 CM |
2147 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
2148 | struct btrfs_root *root); | |
1a54ef8c BR |
2149 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
2150 | struct btrfs_root *root, int *is_new); | |
39279cc3 CM |
2151 | int btrfs_commit_write(struct file *file, struct page *page, |
2152 | unsigned from, unsigned to); | |
a52d9a80 CM |
2153 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
2154 | size_t page_offset, u64 start, u64 end, | |
2155 | int create); | |
2156 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
2157 | struct btrfs_root *root, | |
2158 | struct inode *inode); | |
5b21f2ed ZY |
2159 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
2160 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
2161 | void btrfs_orphan_cleanup(struct btrfs_root *root); | |
9036c102 | 2162 | int btrfs_cont_expand(struct inode *inode, loff_t size); |
f46b5a66 CH |
2163 | |
2164 | /* ioctl.c */ | |
2165 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
2166 | ||
39279cc3 | 2167 | /* file.c */ |
e02119d5 | 2168 | int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync); |
5b21f2ed ZY |
2169 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
2170 | int skip_pinned); | |
5f56406a | 2171 | int btrfs_check_file(struct btrfs_root *root, struct inode *inode); |
39279cc3 CM |
2172 | extern struct file_operations btrfs_file_operations; |
2173 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
2174 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 2175 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
d899e052 YZ |
2176 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
2177 | struct btrfs_root *root, | |
2178 | struct inode *inode, u64 start, u64 end); | |
6bf13c0c SW |
2179 | int btrfs_release_file(struct inode *inode, struct file *file); |
2180 | ||
6702ed49 CM |
2181 | /* tree-defrag.c */ |
2182 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
2183 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
2184 | |
2185 | /* sysfs.c */ | |
2186 | int btrfs_init_sysfs(void); | |
2187 | void btrfs_exit_sysfs(void); | |
2188 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
2189 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
2190 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
2191 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
2192 | ||
5103e947 JB |
2193 | /* xattr.c */ |
2194 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 2195 | |
edbd8d4e CM |
2196 | /* super.c */ |
2197 | u64 btrfs_parse_size(char *str); | |
edf24abe | 2198 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 2199 | int btrfs_sync_fs(struct super_block *sb, int wait); |
33268eaf JB |
2200 | |
2201 | /* acl.c */ | |
2202 | int btrfs_check_acl(struct inode *inode, int mask); | |
2203 | int btrfs_init_acl(struct inode *inode, struct inode *dir); | |
2204 | int btrfs_acl_chmod(struct inode *inode); | |
0f9dd46c | 2205 | |
eb60ceac | 2206 | #endif |