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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
810191ff CM |
22 | #include <linux/mm.h> |
23 | #include <linux/highmem.h> | |
e20d96d6 | 24 | #include <linux/fs.h> |
a2de733c | 25 | #include <linux/rwsem.h> |
803b2f54 | 26 | #include <linux/semaphore.h> |
58176a96 | 27 | #include <linux/completion.h> |
04160088 | 28 | #include <linux/backing-dev.h> |
e6dcd2dc | 29 | #include <linux/wait.h> |
5a0e3ad6 | 30 | #include <linux/slab.h> |
f8b18087 | 31 | #include <linux/kobject.h> |
1abe9b8a | 32 | #include <trace/events/btrfs.h> |
479965d6 | 33 | #include <asm/kmap_types.h> |
3b16a4e3 | 34 | #include <linux/pagemap.h> |
55e301fd | 35 | #include <linux/btrfs.h> |
d1310b2e | 36 | #include "extent_io.h" |
5f39d397 | 37 | #include "extent_map.h" |
8b712842 | 38 | #include "async-thread.h" |
e20d96d6 | 39 | |
e089f05c | 40 | struct btrfs_trans_handle; |
79154b1b | 41 | struct btrfs_transaction; |
a22285a6 | 42 | struct btrfs_pending_snapshot; |
35b7e476 CM |
43 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
44 | extern struct kmem_cache *btrfs_transaction_cachep; | |
45 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 46 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 47 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 48 | struct btrfs_ordered_sum; |
e089f05c | 49 | |
294e30fe JB |
50 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
51 | #define STATIC noinline | |
52 | #else | |
53 | #define STATIC static noinline | |
54 | #endif | |
55 | ||
cdb4c574 | 56 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 57 | |
72d7aefc | 58 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 59 | |
4008c04a | 60 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 61 | |
5d4f98a2 YZ |
62 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
63 | ||
5a3f23d5 CM |
64 | /* |
65 | * files bigger than this get some pre-flushing when they are added | |
66 | * to the ordered operations list. That way we limit the total | |
67 | * work done by the commit | |
68 | */ | |
69 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) | |
70 | ||
0b86a832 | 71 | /* holds pointers to all of the tree roots */ |
6407bf6d | 72 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
73 | |
74 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 75 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 76 | |
0b86a832 CM |
77 | /* |
78 | * chunk tree stores translations from logical -> physical block numbering | |
79 | * the super block points to the chunk tree | |
80 | */ | |
e085def2 | 81 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
82 | |
83 | /* | |
84 | * stores information about which areas of a given device are in use. | |
85 | * one per device. The tree of tree roots points to the device tree | |
86 | */ | |
e085def2 CM |
87 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
88 | ||
89 | /* one per subvolume, storing files and directories */ | |
90 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
91 | ||
92 | /* directory objectid inside the root tree */ | |
93 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 94 | |
d20f7043 CM |
95 | /* holds checksums of all the data extents */ |
96 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
97 | ||
630dc772 AJ |
98 | /* holds quota configuration and tracking */ |
99 | #define BTRFS_QUOTA_TREE_OBJECTID 8ULL | |
100 | ||
07b30a49 SB |
101 | /* for storing items that use the BTRFS_UUID_KEY* types */ |
102 | #define BTRFS_UUID_TREE_OBJECTID 9ULL | |
103 | ||
60b62978 DS |
104 | /* for storing balance parameters in the root tree */ |
105 | #define BTRFS_BALANCE_OBJECTID -4ULL | |
106 | ||
7b128766 JB |
107 | /* orhpan objectid for tracking unlinked/truncated files */ |
108 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
109 | ||
e02119d5 CM |
110 | /* does write ahead logging to speed up fsyncs */ |
111 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
112 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
113 | ||
e4657689 ZY |
114 | /* for space balancing */ |
115 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
116 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
117 | ||
d20f7043 CM |
118 | /* |
119 | * extent checksums all have this objectid | |
120 | * this allows them to share the logging tree | |
121 | * for fsyncs | |
122 | */ | |
123 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
124 | ||
0af3d00b JB |
125 | /* For storing free space cache */ |
126 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL | |
127 | ||
82d5902d | 128 | /* |
527a1361 | 129 | * The inode number assigned to the special inode for storing |
82d5902d LZ |
130 | * free ino cache |
131 | */ | |
132 | #define BTRFS_FREE_INO_OBJECTID -12ULL | |
133 | ||
31840ae1 ZY |
134 | /* dummy objectid represents multiple objectids */ |
135 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
136 | ||
0b86a832 | 137 | /* |
6527cdbe | 138 | * All files have objectids in this range. |
0b86a832 | 139 | */ |
f6dbff55 | 140 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 141 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 142 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 143 | |
0b86a832 CM |
144 | |
145 | /* | |
146 | * the device items go into the chunk tree. The key is in the form | |
147 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
148 | */ | |
149 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
150 | ||
4df27c4d YZ |
151 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
152 | ||
153 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 | |
154 | ||
6e71c47a | 155 | #define BTRFS_DEV_REPLACE_DEVID 0ULL |
e93c89c1 | 156 | |
727011e0 CM |
157 | /* |
158 | * the max metadata block size. This limit is somewhat artificial, | |
159 | * but the memmove costs go through the roof for larger blocks. | |
160 | */ | |
161 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
162 | ||
e20d96d6 CM |
163 | /* |
164 | * we can actually store much bigger names, but lets not confuse the rest | |
165 | * of linux | |
166 | */ | |
167 | #define BTRFS_NAME_LEN 255 | |
168 | ||
f186373f MF |
169 | /* |
170 | * Theoretical limit is larger, but we keep this down to a sane | |
171 | * value. That should limit greatly the possibility of collisions on | |
172 | * inode ref items. | |
173 | */ | |
174 | #define BTRFS_LINK_MAX 65535U | |
175 | ||
f254e52c CM |
176 | /* 32 bytes in various csum fields */ |
177 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
178 | |
179 | /* csum types */ | |
180 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
181 | ||
182 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
183 | ||
509659cd | 184 | /* four bytes for CRC32 */ |
3954401f | 185 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 186 | |
29a8d9a0 SB |
187 | /* spefic to btrfs_map_block(), therefore not in include/linux/blk_types.h */ |
188 | #define REQ_GET_READ_MIRRORS (1 << 30) | |
189 | ||
fabb5681 CM |
190 | #define BTRFS_FT_UNKNOWN 0 |
191 | #define BTRFS_FT_REG_FILE 1 | |
192 | #define BTRFS_FT_DIR 2 | |
193 | #define BTRFS_FT_CHRDEV 3 | |
194 | #define BTRFS_FT_BLKDEV 4 | |
195 | #define BTRFS_FT_FIFO 5 | |
196 | #define BTRFS_FT_SOCK 6 | |
197 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
198 | #define BTRFS_FT_XATTR 8 |
199 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 200 | |
3d136a11 SB |
201 | /* ioprio of readahead is set to idle */ |
202 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
203 | ||
e2d84521 MX |
204 | #define BTRFS_DIRTY_METADATA_THRESH (32 * 1024 * 1024) |
205 | ||
fec577fb | 206 | /* |
d4a78947 WF |
207 | * The key defines the order in the tree, and so it also defines (optimal) |
208 | * block layout. | |
209 | * | |
210 | * objectid corresponds to the inode number. | |
211 | * | |
212 | * type tells us things about the object, and is a kind of stream selector. | |
213 | * so for a given inode, keys with type of 1 might refer to the inode data, | |
214 | * type of 2 may point to file data in the btree and type == 3 may point to | |
215 | * extents. | |
fec577fb CM |
216 | * |
217 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
218 | * |
219 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
220 | * in cpu native order. Otherwise they are identical and their sizes | |
221 | * should be the same (ie both packed) | |
fec577fb | 222 | */ |
e2fa7227 CM |
223 | struct btrfs_disk_key { |
224 | __le64 objectid; | |
5f39d397 | 225 | u8 type; |
70b2befd | 226 | __le64 offset; |
e2fa7227 CM |
227 | } __attribute__ ((__packed__)); |
228 | ||
229 | struct btrfs_key { | |
eb60ceac | 230 | u64 objectid; |
5f39d397 | 231 | u8 type; |
70b2befd | 232 | u64 offset; |
eb60ceac CM |
233 | } __attribute__ ((__packed__)); |
234 | ||
0b86a832 CM |
235 | struct btrfs_mapping_tree { |
236 | struct extent_map_tree map_tree; | |
237 | }; | |
238 | ||
0b86a832 CM |
239 | struct btrfs_dev_item { |
240 | /* the internal btrfs device id */ | |
241 | __le64 devid; | |
242 | ||
243 | /* size of the device */ | |
244 | __le64 total_bytes; | |
245 | ||
246 | /* bytes used */ | |
247 | __le64 bytes_used; | |
248 | ||
249 | /* optimal io alignment for this device */ | |
250 | __le32 io_align; | |
251 | ||
252 | /* optimal io width for this device */ | |
253 | __le32 io_width; | |
254 | ||
255 | /* minimal io size for this device */ | |
256 | __le32 sector_size; | |
257 | ||
0b86a832 CM |
258 | /* type and info about this device */ |
259 | __le64 type; | |
260 | ||
2b82032c YZ |
261 | /* expected generation for this device */ |
262 | __le64 generation; | |
263 | ||
c3027eb5 CM |
264 | /* |
265 | * starting byte of this partition on the device, | |
d4a78947 | 266 | * to allow for stripe alignment in the future |
c3027eb5 CM |
267 | */ |
268 | __le64 start_offset; | |
269 | ||
e17cade2 CM |
270 | /* grouping information for allocation decisions */ |
271 | __le32 dev_group; | |
272 | ||
273 | /* seek speed 0-100 where 100 is fastest */ | |
274 | u8 seek_speed; | |
275 | ||
276 | /* bandwidth 0-100 where 100 is fastest */ | |
277 | u8 bandwidth; | |
278 | ||
0d81ba5d | 279 | /* btrfs generated uuid for this device */ |
e17cade2 | 280 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
281 | |
282 | /* uuid of FS who owns this device */ | |
283 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
284 | } __attribute__ ((__packed__)); |
285 | ||
286 | struct btrfs_stripe { | |
287 | __le64 devid; | |
288 | __le64 offset; | |
e17cade2 | 289 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
290 | } __attribute__ ((__packed__)); |
291 | ||
292 | struct btrfs_chunk { | |
e17cade2 CM |
293 | /* size of this chunk in bytes */ |
294 | __le64 length; | |
295 | ||
296 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 297 | __le64 owner; |
e17cade2 | 298 | |
0b86a832 CM |
299 | __le64 stripe_len; |
300 | __le64 type; | |
301 | ||
302 | /* optimal io alignment for this chunk */ | |
303 | __le32 io_align; | |
304 | ||
305 | /* optimal io width for this chunk */ | |
306 | __le32 io_width; | |
307 | ||
308 | /* minimal io size for this chunk */ | |
309 | __le32 sector_size; | |
310 | ||
311 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
312 | * item in the btree | |
313 | */ | |
314 | __le16 num_stripes; | |
321aecc6 CM |
315 | |
316 | /* sub stripes only matter for raid10 */ | |
317 | __le16 sub_stripes; | |
0b86a832 CM |
318 | struct btrfs_stripe stripe; |
319 | /* additional stripes go here */ | |
320 | } __attribute__ ((__packed__)); | |
321 | ||
0af3d00b JB |
322 | #define BTRFS_FREE_SPACE_EXTENT 1 |
323 | #define BTRFS_FREE_SPACE_BITMAP 2 | |
324 | ||
325 | struct btrfs_free_space_entry { | |
326 | __le64 offset; | |
327 | __le64 bytes; | |
328 | u8 type; | |
329 | } __attribute__ ((__packed__)); | |
330 | ||
331 | struct btrfs_free_space_header { | |
332 | struct btrfs_disk_key location; | |
333 | __le64 generation; | |
334 | __le64 num_entries; | |
335 | __le64 num_bitmaps; | |
336 | } __attribute__ ((__packed__)); | |
337 | ||
0b86a832 CM |
338 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
339 | { | |
340 | BUG_ON(num_stripes == 0); | |
341 | return sizeof(struct btrfs_chunk) + | |
342 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
343 | } | |
344 | ||
5d4f98a2 YZ |
345 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
346 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) | |
acce952b | 347 | |
348 | /* | |
349 | * File system states | |
350 | */ | |
87533c47 | 351 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 352 | #define BTRFS_FS_STATE_REMOUNTING 1 |
08748810 | 353 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
c404e0dc | 354 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
acce952b | 355 | |
87533c47 | 356 | /* Super block flags */ |
acce952b | 357 | /* Errors detected */ |
358 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) | |
359 | ||
5d4f98a2 YZ |
360 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
361 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) | |
362 | ||
363 | #define BTRFS_BACKREF_REV_MAX 256 | |
364 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
365 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
366 | BTRFS_BACKREF_REV_SHIFT) | |
367 | ||
368 | #define BTRFS_OLD_BACKREF_REV 0 | |
369 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 370 | |
fec577fb CM |
371 | /* |
372 | * every tree block (leaf or node) starts with this header. | |
373 | */ | |
bb492bb0 | 374 | struct btrfs_header { |
e17cade2 | 375 | /* these first four must match the super block */ |
f254e52c | 376 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 377 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 378 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 379 | __le64 flags; |
e17cade2 CM |
380 | |
381 | /* allowed to be different from the super from here on down */ | |
382 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 383 | __le64 generation; |
4d775673 | 384 | __le64 owner; |
5f39d397 | 385 | __le32 nritems; |
9a6f11ed | 386 | u8 level; |
eb60ceac CM |
387 | } __attribute__ ((__packed__)); |
388 | ||
5f39d397 | 389 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
390 | sizeof(struct btrfs_header)) / \ |
391 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 392 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 393 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
394 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
395 | sizeof(struct btrfs_item) - \ | |
396 | sizeof(struct btrfs_file_extent_item)) | |
f34f57a3 YZ |
397 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
398 | sizeof(struct btrfs_item) -\ | |
399 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 400 | |
0b86a832 CM |
401 | |
402 | /* | |
403 | * this is a very generous portion of the super block, giving us | |
404 | * room to translate 14 chunks with 3 stripes each. | |
405 | */ | |
406 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 407 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 408 | |
af31f5e5 CM |
409 | /* |
410 | * just in case we somehow lose the roots and are not able to mount, | |
411 | * we store an array of the roots from previous transactions | |
412 | * in the super. | |
413 | */ | |
414 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
415 | struct btrfs_root_backup { | |
416 | __le64 tree_root; | |
417 | __le64 tree_root_gen; | |
418 | ||
419 | __le64 chunk_root; | |
420 | __le64 chunk_root_gen; | |
421 | ||
422 | __le64 extent_root; | |
423 | __le64 extent_root_gen; | |
424 | ||
425 | __le64 fs_root; | |
426 | __le64 fs_root_gen; | |
427 | ||
428 | __le64 dev_root; | |
429 | __le64 dev_root_gen; | |
430 | ||
431 | __le64 csum_root; | |
432 | __le64 csum_root_gen; | |
433 | ||
434 | __le64 total_bytes; | |
435 | __le64 bytes_used; | |
436 | __le64 num_devices; | |
437 | /* future */ | |
d1423248 | 438 | __le64 unused_64[4]; |
af31f5e5 CM |
439 | |
440 | u8 tree_root_level; | |
441 | u8 chunk_root_level; | |
442 | u8 extent_root_level; | |
443 | u8 fs_root_level; | |
444 | u8 dev_root_level; | |
445 | u8 csum_root_level; | |
446 | /* future and to align */ | |
447 | u8 unused_8[10]; | |
448 | } __attribute__ ((__packed__)); | |
449 | ||
fec577fb CM |
450 | /* |
451 | * the super block basically lists the main trees of the FS | |
452 | * it currently lacks any block count etc etc | |
453 | */ | |
234b63a0 | 454 | struct btrfs_super_block { |
f254e52c | 455 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 456 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 457 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 458 | __le64 bytenr; /* this block number */ |
63b10fc4 | 459 | __le64 flags; |
e17cade2 CM |
460 | |
461 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 462 | __le64 magic; |
3768f368 CM |
463 | __le64 generation; |
464 | __le64 root; | |
0b86a832 | 465 | __le64 chunk_root; |
e02119d5 | 466 | __le64 log_root; |
c3027eb5 CM |
467 | |
468 | /* this will help find the new super based on the log root */ | |
469 | __le64 log_root_transid; | |
db94535d CM |
470 | __le64 total_bytes; |
471 | __le64 bytes_used; | |
2e635a27 | 472 | __le64 root_dir_objectid; |
8a4b83cc | 473 | __le64 num_devices; |
5f39d397 CM |
474 | __le32 sectorsize; |
475 | __le32 nodesize; | |
476 | __le32 leafsize; | |
87ee04eb | 477 | __le32 stripesize; |
0b86a832 | 478 | __le32 sys_chunk_array_size; |
84234f3a | 479 | __le64 chunk_root_generation; |
f2b636e8 JB |
480 | __le64 compat_flags; |
481 | __le64 compat_ro_flags; | |
482 | __le64 incompat_flags; | |
607d432d | 483 | __le16 csum_type; |
db94535d | 484 | u8 root_level; |
0b86a832 | 485 | u8 chunk_root_level; |
e02119d5 | 486 | u8 log_root_level; |
0d81ba5d | 487 | struct btrfs_dev_item dev_item; |
c3027eb5 | 488 | |
7ae9c09d | 489 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 490 | |
0af3d00b | 491 | __le64 cache_generation; |
26432799 | 492 | __le64 uuid_tree_generation; |
0af3d00b | 493 | |
c3027eb5 | 494 | /* future expansion */ |
26432799 | 495 | __le64 reserved[30]; |
0b86a832 | 496 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 497 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
498 | } __attribute__ ((__packed__)); |
499 | ||
f2b636e8 JB |
500 | /* |
501 | * Compat flags that we support. If any incompat flags are set other than the | |
502 | * ones specified below then we will fail to mount | |
503 | */ | |
5d4f98a2 | 504 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
0af3d00b | 505 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
67377734 | 506 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
a6fa6fae | 507 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
727011e0 CM |
508 | /* |
509 | * some patches floated around with a second compression method | |
510 | * lets save that incompat here for when they do get in | |
511 | * Note we don't actually support it, we're just reserving the | |
512 | * number | |
513 | */ | |
514 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) | |
515 | ||
516 | /* | |
517 | * older kernels tried to do bigger metadata blocks, but the | |
518 | * code was pretty buggy. Lets not let them try anymore. | |
519 | */ | |
520 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) | |
5d4f98a2 | 521 | |
f186373f | 522 | #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) |
53b381b3 | 523 | #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) |
3173a18f | 524 | #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) |
16e7549f | 525 | #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) |
f186373f | 526 | |
5d4f98a2 | 527 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
528 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
529 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
5d4f98a2 | 530 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL |
2eaa055f JM |
531 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
532 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
533 | ||
0af3d00b JB |
534 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
535 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 536 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 537 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 538 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 539 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
53b381b3 | 540 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 541 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f JB |
542 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
543 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) | |
f2b636e8 | 544 | |
2eaa055f JM |
545 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
546 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
547 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 548 | |
fec577fb | 549 | /* |
62e2749e | 550 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
551 | * the item in the leaf (relative to the start of the data area) |
552 | */ | |
0783fcfc | 553 | struct btrfs_item { |
e2fa7227 | 554 | struct btrfs_disk_key key; |
123abc88 | 555 | __le32 offset; |
5f39d397 | 556 | __le32 size; |
eb60ceac CM |
557 | } __attribute__ ((__packed__)); |
558 | ||
fec577fb CM |
559 | /* |
560 | * leaves have an item area and a data area: | |
561 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
562 | * | |
563 | * The data is separate from the items to get the keys closer together | |
564 | * during searches. | |
565 | */ | |
234b63a0 | 566 | struct btrfs_leaf { |
bb492bb0 | 567 | struct btrfs_header header; |
123abc88 | 568 | struct btrfs_item items[]; |
eb60ceac CM |
569 | } __attribute__ ((__packed__)); |
570 | ||
fec577fb CM |
571 | /* |
572 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
573 | * other blocks | |
574 | */ | |
123abc88 CM |
575 | struct btrfs_key_ptr { |
576 | struct btrfs_disk_key key; | |
577 | __le64 blockptr; | |
74493f7a | 578 | __le64 generation; |
123abc88 CM |
579 | } __attribute__ ((__packed__)); |
580 | ||
234b63a0 | 581 | struct btrfs_node { |
bb492bb0 | 582 | struct btrfs_header header; |
123abc88 | 583 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
584 | } __attribute__ ((__packed__)); |
585 | ||
fec577fb | 586 | /* |
234b63a0 CM |
587 | * btrfs_paths remember the path taken from the root down to the leaf. |
588 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
589 | * to any other levels that are present. |
590 | * | |
591 | * The slots array records the index of the item or block pointer | |
592 | * used while walking the tree. | |
593 | */ | |
234b63a0 | 594 | struct btrfs_path { |
5f39d397 | 595 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 596 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
597 | /* if there is real range locking, this locks field will change */ |
598 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 599 | int reada; |
925baedd | 600 | /* keep some upper locks as we walk down */ |
6702ed49 | 601 | int lowest_level; |
459931ec CM |
602 | |
603 | /* | |
604 | * set by btrfs_split_item, tells search_slot to keep all locks | |
605 | * and to force calls to keep space in the nodes | |
606 | */ | |
b9473439 CM |
607 | unsigned int search_for_split:1; |
608 | unsigned int keep_locks:1; | |
609 | unsigned int skip_locking:1; | |
610 | unsigned int leave_spinning:1; | |
5d4f98a2 | 611 | unsigned int search_commit_root:1; |
eb60ceac | 612 | }; |
5de08d7d | 613 | |
62e2749e CM |
614 | /* |
615 | * items in the extent btree are used to record the objectid of the | |
616 | * owner of the block and the number of references | |
617 | */ | |
5d4f98a2 | 618 | |
62e2749e | 619 | struct btrfs_extent_item { |
5d4f98a2 YZ |
620 | __le64 refs; |
621 | __le64 generation; | |
622 | __le64 flags; | |
623 | } __attribute__ ((__packed__)); | |
624 | ||
625 | struct btrfs_extent_item_v0 { | |
62e2749e | 626 | __le32 refs; |
74493f7a CM |
627 | } __attribute__ ((__packed__)); |
628 | ||
5d4f98a2 YZ |
629 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
630 | sizeof(struct btrfs_item)) | |
631 | ||
632 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) | |
633 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) | |
634 | ||
635 | /* following flags only apply to tree blocks */ | |
636 | ||
637 | /* use full backrefs for extent pointers in the block */ | |
638 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) | |
639 | ||
a2de733c AJ |
640 | /* |
641 | * this flag is only used internally by scrub and may be changed at any time | |
642 | * it is only declared here to avoid collisions | |
643 | */ | |
644 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) | |
645 | ||
5d4f98a2 YZ |
646 | struct btrfs_tree_block_info { |
647 | struct btrfs_disk_key key; | |
648 | u8 level; | |
649 | } __attribute__ ((__packed__)); | |
650 | ||
651 | struct btrfs_extent_data_ref { | |
652 | __le64 root; | |
653 | __le64 objectid; | |
654 | __le64 offset; | |
655 | __le32 count; | |
656 | } __attribute__ ((__packed__)); | |
657 | ||
658 | struct btrfs_shared_data_ref { | |
659 | __le32 count; | |
660 | } __attribute__ ((__packed__)); | |
661 | ||
662 | struct btrfs_extent_inline_ref { | |
663 | u8 type; | |
1bec1aed | 664 | __le64 offset; |
5d4f98a2 YZ |
665 | } __attribute__ ((__packed__)); |
666 | ||
667 | /* old style backrefs item */ | |
668 | struct btrfs_extent_ref_v0 { | |
74493f7a CM |
669 | __le64 root; |
670 | __le64 generation; | |
671 | __le64 objectid; | |
5d4f98a2 | 672 | __le32 count; |
62e2749e CM |
673 | } __attribute__ ((__packed__)); |
674 | ||
5d4f98a2 | 675 | |
0b86a832 CM |
676 | /* dev extents record free space on individual devices. The owner |
677 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 678 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
679 | */ |
680 | struct btrfs_dev_extent { | |
e17cade2 CM |
681 | __le64 chunk_tree; |
682 | __le64 chunk_objectid; | |
683 | __le64 chunk_offset; | |
0b86a832 | 684 | __le64 length; |
e17cade2 | 685 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
686 | } __attribute__ ((__packed__)); |
687 | ||
3954401f | 688 | struct btrfs_inode_ref { |
aec7477b | 689 | __le64 index; |
3954401f CM |
690 | __le16 name_len; |
691 | /* name goes here */ | |
692 | } __attribute__ ((__packed__)); | |
693 | ||
f186373f MF |
694 | struct btrfs_inode_extref { |
695 | __le64 parent_objectid; | |
696 | __le64 index; | |
697 | __le16 name_len; | |
698 | __u8 name[0]; | |
699 | /* name goes here */ | |
700 | } __attribute__ ((__packed__)); | |
701 | ||
0b86a832 | 702 | struct btrfs_timespec { |
f254e52c | 703 | __le64 sec; |
1e1d2701 CM |
704 | __le32 nsec; |
705 | } __attribute__ ((__packed__)); | |
706 | ||
95029d7d | 707 | enum btrfs_compression_type { |
261507a0 LZ |
708 | BTRFS_COMPRESS_NONE = 0, |
709 | BTRFS_COMPRESS_ZLIB = 1, | |
a6fa6fae LZ |
710 | BTRFS_COMPRESS_LZO = 2, |
711 | BTRFS_COMPRESS_TYPES = 2, | |
712 | BTRFS_COMPRESS_LAST = 3, | |
95029d7d | 713 | }; |
c8b97818 | 714 | |
1e1d2701 | 715 | struct btrfs_inode_item { |
e02119d5 | 716 | /* nfs style generation number */ |
1e1d2701 | 717 | __le64 generation; |
e02119d5 CM |
718 | /* transid that last touched this inode */ |
719 | __le64 transid; | |
1e1d2701 | 720 | __le64 size; |
a76a3cd4 | 721 | __le64 nbytes; |
31f3c99b | 722 | __le64 block_group; |
1e1d2701 CM |
723 | __le32 nlink; |
724 | __le32 uid; | |
725 | __le32 gid; | |
726 | __le32 mode; | |
0b86a832 | 727 | __le64 rdev; |
f2b636e8 | 728 | __le64 flags; |
c8b97818 | 729 | |
c3027eb5 CM |
730 | /* modification sequence number for NFS */ |
731 | __le64 sequence; | |
732 | ||
733 | /* | |
734 | * a little future expansion, for more than this we can | |
735 | * just grow the inode item and version it | |
736 | */ | |
737 | __le64 reserved[4]; | |
0b86a832 CM |
738 | struct btrfs_timespec atime; |
739 | struct btrfs_timespec ctime; | |
740 | struct btrfs_timespec mtime; | |
741 | struct btrfs_timespec otime; | |
1e1d2701 CM |
742 | } __attribute__ ((__packed__)); |
743 | ||
e02119d5 CM |
744 | struct btrfs_dir_log_item { |
745 | __le64 end; | |
746 | } __attribute__ ((__packed__)); | |
747 | ||
62e2749e | 748 | struct btrfs_dir_item { |
d6e4a428 | 749 | struct btrfs_disk_key location; |
e02119d5 | 750 | __le64 transid; |
5103e947 | 751 | __le16 data_len; |
a8a2ee0c | 752 | __le16 name_len; |
62e2749e CM |
753 | u8 type; |
754 | } __attribute__ ((__packed__)); | |
755 | ||
b83cc969 LZ |
756 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
757 | ||
62e2749e | 758 | struct btrfs_root_item { |
d6e4a428 | 759 | struct btrfs_inode_item inode; |
84234f3a | 760 | __le64 generation; |
d6e4a428 | 761 | __le64 root_dirid; |
db94535d CM |
762 | __le64 bytenr; |
763 | __le64 byte_limit; | |
764 | __le64 bytes_used; | |
80ff3856 | 765 | __le64 last_snapshot; |
f2b636e8 | 766 | __le64 flags; |
62e2749e | 767 | __le32 refs; |
5eda7b5e CM |
768 | struct btrfs_disk_key drop_progress; |
769 | u8 drop_level; | |
db94535d | 770 | u8 level; |
8ea05e3a AB |
771 | |
772 | /* | |
773 | * The following fields appear after subvol_uuids+subvol_times | |
774 | * were introduced. | |
775 | */ | |
776 | ||
777 | /* | |
778 | * This generation number is used to test if the new fields are valid | |
779 | * and up to date while reading the root item. Everytime the root item | |
780 | * is written out, the "generation" field is copied into this field. If | |
781 | * anyone ever mounted the fs with an older kernel, we will have | |
782 | * mismatching generation values here and thus must invalidate the | |
783 | * new fields. See btrfs_update_root and btrfs_find_last_root for | |
784 | * details. | |
785 | * the offset of generation_v2 is also used as the start for the memset | |
786 | * when invalidating the fields. | |
787 | */ | |
788 | __le64 generation_v2; | |
789 | u8 uuid[BTRFS_UUID_SIZE]; | |
790 | u8 parent_uuid[BTRFS_UUID_SIZE]; | |
791 | u8 received_uuid[BTRFS_UUID_SIZE]; | |
792 | __le64 ctransid; /* updated when an inode changes */ | |
793 | __le64 otransid; /* trans when created */ | |
794 | __le64 stransid; /* trans when sent. non-zero for received subvol */ | |
795 | __le64 rtransid; /* trans when received. non-zero for received subvol */ | |
796 | struct btrfs_timespec ctime; | |
797 | struct btrfs_timespec otime; | |
798 | struct btrfs_timespec stime; | |
799 | struct btrfs_timespec rtime; | |
800 | __le64 reserved[8]; /* for future */ | |
9f5fae2f | 801 | } __attribute__ ((__packed__)); |
62e2749e | 802 | |
0660b5af CM |
803 | /* |
804 | * this is used for both forward and backward root refs | |
805 | */ | |
806 | struct btrfs_root_ref { | |
807 | __le64 dirid; | |
808 | __le64 sequence; | |
809 | __le16 name_len; | |
810 | } __attribute__ ((__packed__)); | |
811 | ||
0940ebf6 ID |
812 | struct btrfs_disk_balance_args { |
813 | /* | |
814 | * profiles to operate on, single is denoted by | |
815 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
816 | */ | |
817 | __le64 profiles; | |
818 | ||
819 | /* usage filter */ | |
820 | __le64 usage; | |
821 | ||
822 | /* devid filter */ | |
823 | __le64 devid; | |
824 | ||
825 | /* devid subset filter [pstart..pend) */ | |
826 | __le64 pstart; | |
827 | __le64 pend; | |
828 | ||
829 | /* btrfs virtual address space subset filter [vstart..vend) */ | |
830 | __le64 vstart; | |
831 | __le64 vend; | |
832 | ||
833 | /* | |
834 | * profile to convert to, single is denoted by | |
835 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
836 | */ | |
837 | __le64 target; | |
838 | ||
839 | /* BTRFS_BALANCE_ARGS_* */ | |
840 | __le64 flags; | |
841 | ||
842 | __le64 unused[8]; | |
843 | } __attribute__ ((__packed__)); | |
844 | ||
845 | /* | |
846 | * store balance parameters to disk so that balance can be properly | |
847 | * resumed after crash or unmount | |
848 | */ | |
849 | struct btrfs_balance_item { | |
850 | /* BTRFS_BALANCE_* */ | |
851 | __le64 flags; | |
852 | ||
853 | struct btrfs_disk_balance_args data; | |
854 | struct btrfs_disk_balance_args meta; | |
855 | struct btrfs_disk_balance_args sys; | |
856 | ||
857 | __le64 unused[4]; | |
858 | } __attribute__ ((__packed__)); | |
859 | ||
d899e052 YZ |
860 | #define BTRFS_FILE_EXTENT_INLINE 0 |
861 | #define BTRFS_FILE_EXTENT_REG 1 | |
862 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 863 | |
9f5fae2f | 864 | struct btrfs_file_extent_item { |
c8b97818 CM |
865 | /* |
866 | * transaction id that created this extent | |
867 | */ | |
71951f35 | 868 | __le64 generation; |
c8b97818 CM |
869 | /* |
870 | * max number of bytes to hold this extent in ram | |
871 | * when we split a compressed extent we can't know how big | |
872 | * each of the resulting pieces will be. So, this is | |
873 | * an upper limit on the size of the extent in ram instead of | |
874 | * an exact limit. | |
875 | */ | |
876 | __le64 ram_bytes; | |
877 | ||
878 | /* | |
879 | * 32 bits for the various ways we might encode the data, | |
880 | * including compression and encryption. If any of these | |
881 | * are set to something a given disk format doesn't understand | |
882 | * it is treated like an incompat flag for reading and writing, | |
883 | * but not for stat. | |
884 | */ | |
885 | u8 compression; | |
886 | u8 encryption; | |
887 | __le16 other_encoding; /* spare for later use */ | |
888 | ||
889 | /* are we inline data or a real extent? */ | |
236454df | 890 | u8 type; |
c8b97818 | 891 | |
9f5fae2f CM |
892 | /* |
893 | * disk space consumed by the extent, checksum blocks are included | |
894 | * in these numbers | |
895 | */ | |
db94535d CM |
896 | __le64 disk_bytenr; |
897 | __le64 disk_num_bytes; | |
9f5fae2f | 898 | /* |
dee26a9f | 899 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
900 | * this extent record is for. This allows a file extent to point |
901 | * into the middle of an existing extent on disk, sharing it | |
902 | * between two snapshots (useful if some bytes in the middle of the | |
903 | * extent have changed | |
904 | */ | |
905 | __le64 offset; | |
906 | /* | |
c8b97818 CM |
907 | * the logical number of file blocks (no csums included). This |
908 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 909 | */ |
db94535d | 910 | __le64 num_bytes; |
c8b97818 | 911 | |
9f5fae2f CM |
912 | } __attribute__ ((__packed__)); |
913 | ||
f254e52c | 914 | struct btrfs_csum_item { |
509659cd | 915 | u8 csum; |
f254e52c CM |
916 | } __attribute__ ((__packed__)); |
917 | ||
733f4fbb SB |
918 | struct btrfs_dev_stats_item { |
919 | /* | |
920 | * grow this item struct at the end for future enhancements and keep | |
921 | * the existing values unchanged | |
922 | */ | |
923 | __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; | |
924 | } __attribute__ ((__packed__)); | |
925 | ||
e922e087 SB |
926 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 |
927 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 | |
928 | #define BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED 0 | |
929 | #define BTRFS_DEV_REPLACE_ITEM_STATE_STARTED 1 | |
930 | #define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 2 | |
931 | #define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 3 | |
932 | #define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 4 | |
933 | ||
934 | struct btrfs_dev_replace { | |
935 | u64 replace_state; /* see #define above */ | |
936 | u64 time_started; /* seconds since 1-Jan-1970 */ | |
937 | u64 time_stopped; /* seconds since 1-Jan-1970 */ | |
938 | atomic64_t num_write_errors; | |
939 | atomic64_t num_uncorrectable_read_errors; | |
940 | ||
941 | u64 cursor_left; | |
942 | u64 committed_cursor_left; | |
943 | u64 cursor_left_last_write_of_item; | |
944 | u64 cursor_right; | |
945 | ||
946 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
947 | ||
948 | int is_valid; | |
949 | int item_needs_writeback; | |
950 | struct btrfs_device *srcdev; | |
951 | struct btrfs_device *tgtdev; | |
952 | ||
953 | pid_t lock_owner; | |
954 | atomic_t nesting_level; | |
955 | struct mutex lock_finishing_cancel_unmount; | |
956 | struct mutex lock_management_lock; | |
957 | struct mutex lock; | |
958 | ||
959 | struct btrfs_scrub_progress scrub_progress; | |
960 | }; | |
961 | ||
a2bff640 SB |
962 | struct btrfs_dev_replace_item { |
963 | /* | |
964 | * grow this item struct at the end for future enhancements and keep | |
965 | * the existing values unchanged | |
966 | */ | |
967 | __le64 src_devid; | |
968 | __le64 cursor_left; | |
969 | __le64 cursor_right; | |
970 | __le64 cont_reading_from_srcdev_mode; | |
971 | ||
972 | __le64 replace_state; | |
973 | __le64 time_started; | |
974 | __le64 time_stopped; | |
975 | __le64 num_write_errors; | |
976 | __le64 num_uncorrectable_read_errors; | |
977 | } __attribute__ ((__packed__)); | |
978 | ||
0b86a832 | 979 | /* different types of block groups (and chunks) */ |
52ba6929 ID |
980 | #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) |
981 | #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) | |
982 | #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) | |
983 | #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) | |
984 | #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) | |
985 | #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) | |
986 | #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) | |
1c89cdd1 AP |
987 | #define BTRFS_BLOCK_GROUP_RAID5 (1ULL << 7) |
988 | #define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8) | |
a46d11a8 | 989 | #define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE |
e6ec716f MX |
990 | |
991 | enum btrfs_raid_types { | |
992 | BTRFS_RAID_RAID10, | |
993 | BTRFS_RAID_RAID1, | |
994 | BTRFS_RAID_DUP, | |
995 | BTRFS_RAID_RAID0, | |
996 | BTRFS_RAID_SINGLE, | |
e942f883 CM |
997 | BTRFS_RAID_RAID5, |
998 | BTRFS_RAID_RAID6, | |
e6ec716f MX |
999 | BTRFS_NR_RAID_TYPES |
1000 | }; | |
52ba6929 ID |
1001 | |
1002 | #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \ | |
1003 | BTRFS_BLOCK_GROUP_SYSTEM | \ | |
1004 | BTRFS_BLOCK_GROUP_METADATA) | |
1005 | ||
1006 | #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \ | |
1007 | BTRFS_BLOCK_GROUP_RAID1 | \ | |
53b381b3 DW |
1008 | BTRFS_BLOCK_GROUP_RAID5 | \ |
1009 | BTRFS_BLOCK_GROUP_RAID6 | \ | |
52ba6929 ID |
1010 | BTRFS_BLOCK_GROUP_DUP | \ |
1011 | BTRFS_BLOCK_GROUP_RAID10) | |
a46d11a8 ID |
1012 | /* |
1013 | * We need a bit for restriper to be able to tell when chunks of type | |
1014 | * SINGLE are available. This "extended" profile format is used in | |
1015 | * fs_info->avail_*_alloc_bits (in-memory) and balance item fields | |
1016 | * (on-disk). The corresponding on-disk bit in chunk.type is reserved | |
1017 | * to avoid remappings between two formats in future. | |
1018 | */ | |
1019 | #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) | |
1020 | ||
899c81ea ID |
1021 | #define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | \ |
1022 | BTRFS_AVAIL_ALLOC_BIT_SINGLE) | |
1023 | ||
1024 | static inline u64 chunk_to_extended(u64 flags) | |
1025 | { | |
1026 | if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0) | |
1027 | flags |= BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
1028 | ||
1029 | return flags; | |
1030 | } | |
1031 | static inline u64 extended_to_chunk(u64 flags) | |
1032 | { | |
1033 | return flags & ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
1034 | } | |
1035 | ||
9078a3e1 CM |
1036 | struct btrfs_block_group_item { |
1037 | __le64 used; | |
0b86a832 CM |
1038 | __le64 chunk_objectid; |
1039 | __le64 flags; | |
9078a3e1 CM |
1040 | } __attribute__ ((__packed__)); |
1041 | ||
630dc772 AJ |
1042 | /* |
1043 | * is subvolume quota turned on? | |
1044 | */ | |
1045 | #define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) | |
1046 | /* | |
2f232036 | 1047 | * RESCAN is set during the initialization phase |
630dc772 | 1048 | */ |
2f232036 | 1049 | #define BTRFS_QGROUP_STATUS_FLAG_RESCAN (1ULL << 1) |
630dc772 AJ |
1050 | /* |
1051 | * Some qgroup entries are known to be out of date, | |
1052 | * either because the configuration has changed in a way that | |
1053 | * makes a rescan necessary, or because the fs has been mounted | |
1054 | * with a non-qgroup-aware version. | |
1055 | * Turning qouta off and on again makes it inconsistent, too. | |
1056 | */ | |
1057 | #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) | |
1058 | ||
1059 | #define BTRFS_QGROUP_STATUS_VERSION 1 | |
1060 | ||
1061 | struct btrfs_qgroup_status_item { | |
1062 | __le64 version; | |
1063 | /* | |
1064 | * the generation is updated during every commit. As older | |
1065 | * versions of btrfs are not aware of qgroups, it will be | |
1066 | * possible to detect inconsistencies by checking the | |
1067 | * generation on mount time | |
1068 | */ | |
1069 | __le64 generation; | |
1070 | ||
1071 | /* flag definitions see above */ | |
1072 | __le64 flags; | |
1073 | ||
1074 | /* | |
1075 | * only used during scanning to record the progress | |
1076 | * of the scan. It contains a logical address | |
1077 | */ | |
2f232036 | 1078 | __le64 rescan; |
630dc772 AJ |
1079 | } __attribute__ ((__packed__)); |
1080 | ||
1081 | struct btrfs_qgroup_info_item { | |
1082 | __le64 generation; | |
1083 | __le64 rfer; | |
1084 | __le64 rfer_cmpr; | |
1085 | __le64 excl; | |
1086 | __le64 excl_cmpr; | |
1087 | } __attribute__ ((__packed__)); | |
1088 | ||
1089 | /* flags definition for qgroup limits */ | |
1090 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) | |
1091 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) | |
1092 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) | |
1093 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) | |
1094 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) | |
1095 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) | |
1096 | ||
1097 | struct btrfs_qgroup_limit_item { | |
1098 | /* | |
1099 | * only updated when any of the other values change | |
1100 | */ | |
1101 | __le64 flags; | |
1102 | __le64 max_rfer; | |
1103 | __le64 max_excl; | |
1104 | __le64 rsv_rfer; | |
1105 | __le64 rsv_excl; | |
1106 | } __attribute__ ((__packed__)); | |
1107 | ||
6324fbf3 | 1108 | struct btrfs_space_info { |
26b47ff6 | 1109 | spinlock_t lock; |
6a63209f | 1110 | |
89a55897 JB |
1111 | u64 total_bytes; /* total bytes in the space, |
1112 | this doesn't take mirrors into account */ | |
b742bb82 | 1113 | u64 bytes_used; /* total bytes used, |
e9c54999 | 1114 | this doesn't take mirrors into account */ |
6a63209f JB |
1115 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
1116 | transaction finishes */ | |
1117 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
1118 | current allocations */ | |
6a63209f | 1119 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 1120 | delalloc/allocations */ |
26b47ff6 MX |
1121 | u64 bytes_readonly; /* total bytes that are read only */ |
1122 | ||
1123 | unsigned int full:1; /* indicates that we cannot allocate any more | |
1124 | chunks for this space */ | |
1125 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
1126 | ||
1127 | unsigned int flush:1; /* set if we are trying to make space */ | |
1128 | ||
1129 | unsigned int force_alloc; /* set if we need to force a chunk | |
1130 | alloc for this space */ | |
1131 | ||
b742bb82 | 1132 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
1133 | u64 disk_total; /* total bytes on disk, takes mirrors into |
1134 | account */ | |
6a63209f | 1135 | |
26b47ff6 MX |
1136 | u64 flags; |
1137 | ||
b150a4f1 JB |
1138 | /* |
1139 | * bytes_pinned is kept in line with what is actually pinned, as in | |
1140 | * we've called update_block_group and dropped the bytes_used counter | |
1141 | * and increased the bytes_pinned counter. However this means that | |
1142 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
1143 | * delayed refs are flushed, so this counter is inc'ed everytime we call | |
1144 | * btrfs_free_extent so it is a realtime count of what will be freed | |
1145 | * once the transaction is committed. It will be zero'ed everytime the | |
1146 | * transaction commits. | |
1147 | */ | |
1148 | struct percpu_counter total_bytes_pinned; | |
1149 | ||
6324fbf3 | 1150 | struct list_head list; |
0f9dd46c | 1151 | |
26b47ff6 | 1152 | struct rw_semaphore groups_sem; |
0f9dd46c | 1153 | /* for block groups in our same type */ |
b742bb82 | 1154 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 1155 | wait_queue_head_t wait; |
6ab0a202 JM |
1156 | |
1157 | struct kobject kobj; | |
1158 | struct kobject block_group_kobjs[BTRFS_NR_RAID_TYPES]; | |
0f9dd46c JB |
1159 | }; |
1160 | ||
66d8f3dd MX |
1161 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
1162 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
1163 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
1164 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
1165 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
1166 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
1167 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
1168 | ||
f0486c68 YZ |
1169 | struct btrfs_block_rsv { |
1170 | u64 size; | |
1171 | u64 reserved; | |
f0486c68 | 1172 | struct btrfs_space_info *space_info; |
f0486c68 | 1173 | spinlock_t lock; |
66d8f3dd MX |
1174 | unsigned short full; |
1175 | unsigned short type; | |
1176 | unsigned short failfast; | |
f0486c68 YZ |
1177 | }; |
1178 | ||
fa9c0d79 CM |
1179 | /* |
1180 | * free clusters are used to claim free space in relatively large chunks, | |
1181 | * allowing us to do less seeky writes. They are used for all metadata | |
1182 | * allocations and data allocations in ssd mode. | |
1183 | */ | |
1184 | struct btrfs_free_cluster { | |
1185 | spinlock_t lock; | |
1186 | spinlock_t refill_lock; | |
1187 | struct rb_root root; | |
1188 | ||
1189 | /* largest extent in this cluster */ | |
1190 | u64 max_size; | |
1191 | ||
1192 | /* first extent starting offset */ | |
1193 | u64 window_start; | |
1194 | ||
1195 | struct btrfs_block_group_cache *block_group; | |
1196 | /* | |
1197 | * when a cluster is allocated from a block group, we put the | |
1198 | * cluster onto a list in the block group so that it can | |
1199 | * be freed before the block group is freed. | |
1200 | */ | |
1201 | struct list_head block_group_list; | |
6324fbf3 CM |
1202 | }; |
1203 | ||
817d52f8 JB |
1204 | enum btrfs_caching_type { |
1205 | BTRFS_CACHE_NO = 0, | |
1206 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
1207 | BTRFS_CACHE_FAST = 2, |
1208 | BTRFS_CACHE_FINISHED = 3, | |
36cce922 | 1209 | BTRFS_CACHE_ERROR = 4, |
817d52f8 JB |
1210 | }; |
1211 | ||
0af3d00b JB |
1212 | enum btrfs_disk_cache_state { |
1213 | BTRFS_DC_WRITTEN = 0, | |
1214 | BTRFS_DC_ERROR = 1, | |
1215 | BTRFS_DC_CLEAR = 2, | |
1216 | BTRFS_DC_SETUP = 3, | |
1217 | BTRFS_DC_NEED_WRITE = 4, | |
1218 | }; | |
1219 | ||
11833d66 YZ |
1220 | struct btrfs_caching_control { |
1221 | struct list_head list; | |
1222 | struct mutex mutex; | |
1223 | wait_queue_head_t wait; | |
bab39bf9 | 1224 | struct btrfs_work work; |
11833d66 YZ |
1225 | struct btrfs_block_group_cache *block_group; |
1226 | u64 progress; | |
1227 | atomic_t count; | |
1228 | }; | |
1229 | ||
9078a3e1 CM |
1230 | struct btrfs_block_group_cache { |
1231 | struct btrfs_key key; | |
1232 | struct btrfs_block_group_item item; | |
817d52f8 | 1233 | struct btrfs_fs_info *fs_info; |
0af3d00b | 1234 | struct inode *inode; |
c286ac48 | 1235 | spinlock_t lock; |
324ae4df | 1236 | u64 pinned; |
e8569813 | 1237 | u64 reserved; |
1b2da372 | 1238 | u64 bytes_super; |
0b86a832 | 1239 | u64 flags; |
96303081 | 1240 | u64 sectorsize; |
5b0e95bf | 1241 | u64 cache_generation; |
53b381b3 DW |
1242 | |
1243 | /* for raid56, this is a full stripe, without parity */ | |
1244 | unsigned long full_stripe_len; | |
1245 | ||
0410c94a MK |
1246 | unsigned int ro:1; |
1247 | unsigned int dirty:1; | |
1248 | unsigned int iref:1; | |
0af3d00b JB |
1249 | |
1250 | int disk_cache_state; | |
0f9dd46c | 1251 | |
817d52f8 | 1252 | /* cache tracking stuff */ |
817d52f8 | 1253 | int cached; |
11833d66 YZ |
1254 | struct btrfs_caching_control *caching_ctl; |
1255 | u64 last_byte_to_unpin; | |
817d52f8 | 1256 | |
0f9dd46c JB |
1257 | struct btrfs_space_info *space_info; |
1258 | ||
1259 | /* free space cache stuff */ | |
34d52cb6 | 1260 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
1261 | |
1262 | /* block group cache stuff */ | |
1263 | struct rb_node cache_node; | |
1264 | ||
1265 | /* for block groups in the same raid type */ | |
1266 | struct list_head list; | |
d2fb3437 YZ |
1267 | |
1268 | /* usage count */ | |
1269 | atomic_t count; | |
fa9c0d79 CM |
1270 | |
1271 | /* List of struct btrfs_free_clusters for this block group. | |
1272 | * Today it will only have one thing on it, but that may change | |
1273 | */ | |
1274 | struct list_head cluster_list; | |
ea658bad JB |
1275 | |
1276 | /* For delayed block group creation */ | |
1277 | struct list_head new_bg_list; | |
9078a3e1 | 1278 | }; |
0b86a832 | 1279 | |
097b8a7c JS |
1280 | /* delayed seq elem */ |
1281 | struct seq_list { | |
1282 | struct list_head list; | |
1283 | u64 seq; | |
1284 | }; | |
1285 | ||
5d80366e JB |
1286 | enum btrfs_orphan_cleanup_state { |
1287 | ORPHAN_CLEANUP_STARTED = 1, | |
1288 | ORPHAN_CLEANUP_DONE = 2, | |
1289 | }; | |
1290 | ||
53b381b3 DW |
1291 | /* used by the raid56 code to lock stripes for read/modify/write */ |
1292 | struct btrfs_stripe_hash { | |
1293 | struct list_head hash_list; | |
1294 | wait_queue_head_t wait; | |
1295 | spinlock_t lock; | |
1296 | }; | |
1297 | ||
1298 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
1299 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
1300 | struct list_head stripe_cache; |
1301 | spinlock_t cache_lock; | |
1302 | int cache_size; | |
1303 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
1304 | }; |
1305 | ||
1306 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
1307 | ||
097b8a7c | 1308 | /* fs_info */ |
5d4f98a2 | 1309 | struct reloc_control; |
0b86a832 | 1310 | struct btrfs_device; |
8a4b83cc | 1311 | struct btrfs_fs_devices; |
c9e9f97b | 1312 | struct btrfs_balance_control; |
16cdcec7 | 1313 | struct btrfs_delayed_root; |
9f5fae2f | 1314 | struct btrfs_fs_info { |
5f39d397 | 1315 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 1316 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
1317 | struct btrfs_root *extent_root; |
1318 | struct btrfs_root *tree_root; | |
0b86a832 CM |
1319 | struct btrfs_root *chunk_root; |
1320 | struct btrfs_root *dev_root; | |
3de4586c | 1321 | struct btrfs_root *fs_root; |
d20f7043 | 1322 | struct btrfs_root *csum_root; |
416ac51d | 1323 | struct btrfs_root *quota_root; |
f7a81ea4 | 1324 | struct btrfs_root *uuid_root; |
e02119d5 CM |
1325 | |
1326 | /* the log root tree is a directory of all the other log roots */ | |
1327 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
1328 | |
1329 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 1330 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 1331 | |
0f9dd46c JB |
1332 | /* block group cache stuff */ |
1333 | spinlock_t block_group_cache_lock; | |
a1897fdd | 1334 | u64 first_logical_byte; |
0f9dd46c JB |
1335 | struct rb_root block_group_cache_tree; |
1336 | ||
2bf64758 JB |
1337 | /* keep track of unallocated space */ |
1338 | spinlock_t free_chunk_lock; | |
1339 | u64 free_chunk_space; | |
1340 | ||
11833d66 YZ |
1341 | struct extent_io_tree freed_extents[2]; |
1342 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 1343 | |
0b86a832 CM |
1344 | /* logical->physical extent mapping */ |
1345 | struct btrfs_mapping_tree mapping_tree; | |
1346 | ||
16cdcec7 MX |
1347 | /* |
1348 | * block reservation for extent, checksum, root tree and | |
1349 | * delayed dir index item | |
1350 | */ | |
f0486c68 YZ |
1351 | struct btrfs_block_rsv global_block_rsv; |
1352 | /* block reservation for delay allocation */ | |
1353 | struct btrfs_block_rsv delalloc_block_rsv; | |
1354 | /* block reservation for metadata operations */ | |
1355 | struct btrfs_block_rsv trans_block_rsv; | |
1356 | /* block reservation for chunk tree */ | |
1357 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
1358 | /* block reservation for delayed operations */ |
1359 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
1360 | |
1361 | struct btrfs_block_rsv empty_block_rsv; | |
1362 | ||
293ffd5f | 1363 | u64 generation; |
15ee9bc7 | 1364 | u64 last_trans_committed; |
0a2b2a84 | 1365 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
1366 | |
1367 | /* | |
1368 | * this is updated to the current trans every time a full commit | |
1369 | * is required instead of the faster short fsync log commits | |
1370 | */ | |
1371 | u64 last_trans_log_full_commit; | |
25cd999e | 1372 | unsigned long mount_opt; |
261507a0 | 1373 | unsigned long compress_type:4; |
8b87dc17 | 1374 | int commit_interval; |
8c6a3ee6 MX |
1375 | /* |
1376 | * It is a suggestive number, the read side is safe even it gets a | |
1377 | * wrong number because we will write out the data into a regular | |
1378 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
1379 | * so it is also safe. | |
1380 | */ | |
6f568d35 | 1381 | u64 max_inline; |
c018daec MX |
1382 | /* |
1383 | * Protected by ->chunk_mutex and sb->s_umount. | |
1384 | * | |
1385 | * The reason that we use two lock to protect it is because only | |
1386 | * remount and mount operations can change it and these two operations | |
1387 | * are under sb->s_umount, but the read side (chunk allocation) can not | |
1388 | * acquire sb->s_umount or the deadlock would happen. So we use two | |
1389 | * locks to protect it. On the write side, we must acquire two locks, | |
1390 | * and on the read side, we just need acquire one of them. | |
1391 | */ | |
8f662a76 | 1392 | u64 alloc_start; |
79154b1b | 1393 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 1394 | wait_queue_head_t transaction_throttle; |
f9295749 | 1395 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 1396 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 1397 | wait_queue_head_t async_submit_wait; |
e02119d5 | 1398 | |
ceda0864 MX |
1399 | /* |
1400 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
1401 | * when they are updated. | |
1402 | * | |
1403 | * Because we do not clear the flags for ever, so we needn't use | |
1404 | * the lock on the read side. | |
1405 | * | |
1406 | * We also needn't use the lock when we mount the fs, because | |
1407 | * there is no other task which will update the flag. | |
1408 | */ | |
1409 | spinlock_t super_lock; | |
6c41761f DS |
1410 | struct btrfs_super_block *super_copy; |
1411 | struct btrfs_super_block *super_for_commit; | |
0b86a832 | 1412 | struct block_device *__bdev; |
e20d96d6 | 1413 | struct super_block *sb; |
d98237b3 | 1414 | struct inode *btree_inode; |
04160088 | 1415 | struct backing_dev_info bdi; |
e02119d5 | 1416 | struct mutex tree_log_mutex; |
a74a4b97 CM |
1417 | struct mutex transaction_kthread_mutex; |
1418 | struct mutex cleaner_mutex; | |
925baedd | 1419 | struct mutex chunk_mutex; |
7d9eb12c | 1420 | struct mutex volume_mutex; |
53b381b3 DW |
1421 | |
1422 | /* this is used during read/modify/write to make sure | |
1423 | * no two ios are trying to mod the same stripe at the same | |
1424 | * time | |
1425 | */ | |
1426 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
1427 | ||
5a3f23d5 CM |
1428 | /* |
1429 | * this protects the ordered operations list only while we are | |
1430 | * processing all of the entries on it. This way we make | |
1431 | * sure the commit code doesn't find the list temporarily empty | |
1432 | * because another function happens to be doing non-waiting preflush | |
1433 | * before jumping into the main commit. | |
1434 | */ | |
1435 | struct mutex ordered_operations_mutex; | |
9ffba8cd JB |
1436 | |
1437 | /* | |
1438 | * Same as ordered_operations_mutex except this is for ordered extents | |
1439 | * and not the operations. | |
1440 | */ | |
1441 | struct mutex ordered_extent_flush_mutex; | |
1442 | ||
11833d66 | 1443 | struct rw_semaphore extent_commit_sem; |
5a3f23d5 | 1444 | |
c71bf099 | 1445 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 1446 | |
c71bf099 | 1447 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
1448 | struct srcu_struct subvol_srcu; |
1449 | ||
a4abeea4 | 1450 | spinlock_t trans_lock; |
7585717f CM |
1451 | /* |
1452 | * the reloc mutex goes with the trans lock, it is taken | |
1453 | * during commit to protect us from the relocation code | |
1454 | */ | |
1455 | struct mutex reloc_mutex; | |
1456 | ||
8fd17795 | 1457 | struct list_head trans_list; |
facda1e7 | 1458 | struct list_head dead_roots; |
11833d66 | 1459 | struct list_head caching_block_groups; |
e02119d5 | 1460 | |
24bbcf04 YZ |
1461 | spinlock_t delayed_iput_lock; |
1462 | struct list_head delayed_iputs; | |
1463 | ||
f29021b2 JS |
1464 | /* this protects tree_mod_seq_list */ |
1465 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 1466 | atomic64_t tree_mod_seq; |
f29021b2 JS |
1467 | struct list_head tree_mod_seq_list; |
1468 | ||
1469 | /* this protects tree_mod_log */ | |
1470 | rwlock_t tree_mod_log_lock; | |
1471 | struct rb_root tree_mod_log; | |
1472 | ||
cb03c743 | 1473 | atomic_t nr_async_submits; |
8c8bee1d | 1474 | atomic_t async_submit_draining; |
0986fe9e | 1475 | atomic_t nr_async_bios; |
771ed689 | 1476 | atomic_t async_delalloc_pages; |
a4abeea4 | 1477 | atomic_t open_ioctl_trans; |
ce9adaa5 | 1478 | |
3eaa2885 | 1479 | /* |
199c2a9c | 1480 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 1481 | */ |
199c2a9c | 1482 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
1483 | |
1484 | /* | |
199c2a9c MX |
1485 | * all fs/file tree roots in which there are data=ordered extents |
1486 | * pending writeback are added into this list. | |
1487 | * | |
5a3f23d5 CM |
1488 | * these can span multiple transactions and basically include |
1489 | * every dirty data page that isn't from nodatacow | |
1490 | */ | |
199c2a9c | 1491 | struct list_head ordered_roots; |
5a3f23d5 | 1492 | |
573bfb72 | 1493 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
1494 | spinlock_t delalloc_root_lock; |
1495 | /* all fs/file tree roots that have delalloc inodes. */ | |
1496 | struct list_head delalloc_roots; | |
3eaa2885 | 1497 | |
8b712842 CM |
1498 | /* |
1499 | * there is a pool of worker threads for checksumming during writes | |
1500 | * and a pool for checksumming after reads. This is because readers | |
1501 | * can run with FS locks held, and the writers may be waiting for | |
1502 | * those locks. We don't want ordering in the pending list to cause | |
1503 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
1504 | * |
1505 | * A third pool does submit_bio to avoid deadlocking with the other | |
1506 | * two | |
8b712842 | 1507 | */ |
d458b054 QW |
1508 | struct btrfs_workqueue *workers; |
1509 | struct btrfs_workqueue *delalloc_workers; | |
1510 | struct btrfs_workqueue *flush_workers; | |
1511 | struct btrfs_workqueue *endio_workers; | |
1512 | struct btrfs_workqueue *endio_meta_workers; | |
1513 | struct btrfs_workqueue *endio_raid56_workers; | |
1514 | struct btrfs_workqueue *rmw_workers; | |
1515 | struct btrfs_workqueue *endio_meta_write_workers; | |
1516 | struct btrfs_workqueue *endio_write_workers; | |
1517 | struct btrfs_workqueue *endio_freespace_worker; | |
1518 | struct btrfs_workqueue *submit_workers; | |
1519 | struct btrfs_workqueue *caching_workers; | |
1520 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 1521 | |
247e743c CM |
1522 | /* |
1523 | * fixup workers take dirty pages that didn't properly go through | |
1524 | * the cow mechanism and make them safe to write. It happens | |
1525 | * for the sys_munmap function call path | |
1526 | */ | |
d458b054 QW |
1527 | struct btrfs_workqueue *fixup_workers; |
1528 | struct btrfs_workqueue *delayed_workers; | |
a74a4b97 CM |
1529 | struct task_struct *transaction_kthread; |
1530 | struct task_struct *cleaner_kthread; | |
4543df7e | 1531 | int thread_pool_size; |
8b712842 | 1532 | |
58176a96 | 1533 | struct kobject super_kobj; |
6ab0a202 | 1534 | struct kobject *space_info_kobj; |
29e5be24 | 1535 | struct kobject *device_dir_kobj; |
58176a96 | 1536 | struct completion kobj_unregister; |
e66f709b | 1537 | int do_barriers; |
facda1e7 | 1538 | int closing; |
e02119d5 | 1539 | int log_root_recovering; |
9f5fae2f | 1540 | |
324ae4df | 1541 | u64 total_pinned; |
b9473439 | 1542 | |
e2d84521 MX |
1543 | /* used to keep from writing metadata until there is a nice batch */ |
1544 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 1545 | struct percpu_counter delalloc_bytes; |
e2d84521 | 1546 | s32 dirty_metadata_batch; |
963d678b MX |
1547 | s32 delalloc_batch; |
1548 | ||
0b86a832 CM |
1549 | struct list_head dirty_cowonly_roots; |
1550 | ||
8a4b83cc | 1551 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1552 | |
1553 | /* | |
1554 | * the space_info list is almost entirely read only. It only changes | |
1555 | * when we add a new raid type to the FS, and that happens | |
1556 | * very rarely. RCU is used to protect it. | |
1557 | */ | |
6324fbf3 | 1558 | struct list_head space_info; |
4184ea7f | 1559 | |
b4d7c3c9 LZ |
1560 | struct btrfs_space_info *data_sinfo; |
1561 | ||
5d4f98a2 YZ |
1562 | struct reloc_control *reloc_ctl; |
1563 | ||
fa9c0d79 CM |
1564 | /* data_alloc_cluster is only used in ssd mode */ |
1565 | struct btrfs_free_cluster data_alloc_cluster; | |
1566 | ||
1567 | /* all metadata allocations go through this cluster */ | |
1568 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1569 | |
4cb5300b CM |
1570 | /* auto defrag inodes go here */ |
1571 | spinlock_t defrag_inodes_lock; | |
1572 | struct rb_root defrag_inodes; | |
1573 | atomic_t defrag_running; | |
1574 | ||
de98ced9 MX |
1575 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
1576 | seqlock_t profiles_lock; | |
a46d11a8 ID |
1577 | /* |
1578 | * these three are in extended format (availability of single | |
1579 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
1580 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
1581 | */ | |
d18a2c44 CM |
1582 | u64 avail_data_alloc_bits; |
1583 | u64 avail_metadata_alloc_bits; | |
1584 | u64 avail_system_alloc_bits; | |
788f20eb | 1585 | |
c9e9f97b ID |
1586 | /* restriper state */ |
1587 | spinlock_t balance_lock; | |
1588 | struct mutex balance_mutex; | |
837d5b6e ID |
1589 | atomic_t balance_running; |
1590 | atomic_t balance_pause_req; | |
a7e99c69 | 1591 | atomic_t balance_cancel_req; |
c9e9f97b | 1592 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1593 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1594 | |
97e728d4 JB |
1595 | unsigned data_chunk_allocations; |
1596 | unsigned metadata_ratio; | |
1597 | ||
788f20eb | 1598 | void *bdev_holder; |
acce952b | 1599 | |
a2de733c AJ |
1600 | /* private scrub information */ |
1601 | struct mutex scrub_lock; | |
1602 | atomic_t scrubs_running; | |
1603 | atomic_t scrub_pause_req; | |
1604 | atomic_t scrubs_paused; | |
1605 | atomic_t scrub_cancel_req; | |
1606 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 1607 | int scrub_workers_refcnt; |
d458b054 QW |
1608 | struct btrfs_workqueue *scrub_workers; |
1609 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
1610 | struct btrfs_workqueue *scrub_nocow_workers; | |
a2de733c | 1611 | |
21adbd5c SB |
1612 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1613 | u32 check_integrity_print_mask; | |
1614 | #endif | |
416ac51d AJ |
1615 | /* |
1616 | * quota information | |
1617 | */ | |
1618 | unsigned int quota_enabled:1; | |
1619 | ||
1620 | /* | |
1621 | * quota_enabled only changes state after a commit. This holds the | |
1622 | * next state. | |
1623 | */ | |
1624 | unsigned int pending_quota_state:1; | |
1625 | ||
1626 | /* is qgroup tracking in a consistent state? */ | |
1627 | u64 qgroup_flags; | |
1628 | ||
1629 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1630 | struct rb_root qgroup_tree; | |
1631 | spinlock_t qgroup_lock; | |
1632 | ||
1e8f9158 WS |
1633 | /* |
1634 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1635 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1636 | */ | |
1637 | struct ulist *qgroup_ulist; | |
1638 | ||
f2f6ed3d WS |
1639 | /* protect user change for quota operations */ |
1640 | struct mutex qgroup_ioctl_lock; | |
1641 | ||
416ac51d AJ |
1642 | /* list of dirty qgroups to be written at next commit */ |
1643 | struct list_head dirty_qgroups; | |
1644 | ||
1645 | /* used by btrfs_qgroup_record_ref for an efficient tree traversal */ | |
1646 | u64 qgroup_seq; | |
21adbd5c | 1647 | |
2f232036 JS |
1648 | /* qgroup rescan items */ |
1649 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1650 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1651 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1652 | struct completion qgroup_rescan_completion; |
b382a324 | 1653 | struct btrfs_work qgroup_rescan_work; |
2f232036 | 1654 | |
acce952b | 1655 | /* filesystem state */ |
87533c47 | 1656 | unsigned long fs_state; |
16cdcec7 MX |
1657 | |
1658 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1659 | |
90519d66 AJ |
1660 | /* readahead tree */ |
1661 | spinlock_t reada_lock; | |
1662 | struct radix_tree_root reada_tree; | |
531f4b1a | 1663 | |
f28491e0 JB |
1664 | /* Extent buffer radix tree */ |
1665 | spinlock_t buffer_lock; | |
1666 | struct radix_tree_root buffer_radix; | |
1667 | ||
af31f5e5 CM |
1668 | /* next backup root to be overwritten */ |
1669 | int backup_root_index; | |
5af3e8cc SB |
1670 | |
1671 | int num_tolerated_disk_barrier_failures; | |
e922e087 SB |
1672 | |
1673 | /* device replace state */ | |
1674 | struct btrfs_dev_replace dev_replace; | |
5ac00add SB |
1675 | |
1676 | atomic_t mutually_exclusive_operation_running; | |
803b2f54 | 1677 | |
c404e0dc MX |
1678 | struct percpu_counter bio_counter; |
1679 | wait_queue_head_t replace_wait; | |
1680 | ||
803b2f54 | 1681 | struct semaphore uuid_tree_rescan_sem; |
70f80175 | 1682 | unsigned int update_uuid_tree_gen:1; |
324ae4df | 1683 | }; |
0b86a832 | 1684 | |
8257b2dc MX |
1685 | struct btrfs_subvolume_writers { |
1686 | struct percpu_counter counter; | |
1687 | wait_queue_head_t wait; | |
1688 | }; | |
1689 | ||
9f5fae2f CM |
1690 | /* |
1691 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1692 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1693 | */ |
1694 | struct btrfs_root { | |
5f39d397 | 1695 | struct extent_buffer *node; |
925baedd | 1696 | |
5f39d397 | 1697 | struct extent_buffer *commit_root; |
e02119d5 | 1698 | struct btrfs_root *log_root; |
1a40e23b | 1699 | struct btrfs_root *reloc_root; |
31153d81 | 1700 | |
62e2749e CM |
1701 | struct btrfs_root_item root_item; |
1702 | struct btrfs_key root_key; | |
9f5fae2f | 1703 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1704 | struct extent_io_tree dirty_log_pages; |
1705 | ||
58176a96 JB |
1706 | struct kobject root_kobj; |
1707 | struct completion kobj_unregister; | |
a2135011 | 1708 | struct mutex objectid_mutex; |
7237f183 | 1709 | |
f0486c68 YZ |
1710 | spinlock_t accounting_lock; |
1711 | struct btrfs_block_rsv *block_rsv; | |
1712 | ||
581bb050 LZ |
1713 | /* free ino cache stuff */ |
1714 | struct mutex fs_commit_mutex; | |
1715 | struct btrfs_free_space_ctl *free_ino_ctl; | |
1716 | enum btrfs_caching_type cached; | |
1717 | spinlock_t cache_lock; | |
1718 | wait_queue_head_t cache_wait; | |
1719 | struct btrfs_free_space_ctl *free_ino_pinned; | |
1720 | u64 cache_progress; | |
82d5902d | 1721 | struct inode *cache_inode; |
581bb050 | 1722 | |
e02119d5 | 1723 | struct mutex log_mutex; |
7237f183 YZ |
1724 | wait_queue_head_t log_writer_wait; |
1725 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1726 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1727 | atomic_t log_writers; |
1728 | atomic_t log_commit[2]; | |
2ecb7923 | 1729 | atomic_t log_batch; |
bb14a59b | 1730 | int log_transid; |
d1433deb MX |
1731 | /* No matter the commit succeeds or not*/ |
1732 | int log_transid_committed; | |
1733 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1734 | int last_log_commit; |
ff782e0a JB |
1735 | pid_t log_start_pid; |
1736 | bool log_multiple_pids; | |
ea8c2819 | 1737 | |
0f7d52f4 CM |
1738 | u64 objectid; |
1739 | u64 last_trans; | |
5f39d397 CM |
1740 | |
1741 | /* data allocations are done in sectorsize units */ | |
1742 | u32 sectorsize; | |
1743 | ||
1744 | /* node allocations are done in nodesize units */ | |
1745 | u32 nodesize; | |
1746 | ||
1747 | /* leaf allocations are done in leafsize units */ | |
1748 | u32 leafsize; | |
1749 | ||
87ee04eb CM |
1750 | u32 stripesize; |
1751 | ||
9f5fae2f | 1752 | u32 type; |
13a8a7c8 YZ |
1753 | |
1754 | u64 highest_objectid; | |
7585717f CM |
1755 | |
1756 | /* btrfs_record_root_in_trans is a multi-step process, | |
1757 | * and it can race with the balancing code. But the | |
1758 | * race is very small, and only the first time the root | |
1759 | * is added to each transaction. So in_trans_setup | |
1760 | * is used to tell us when more checks are required | |
1761 | */ | |
1762 | unsigned long in_trans_setup; | |
9f3a7427 | 1763 | int ref_cows; |
0b86a832 | 1764 | int track_dirty; |
4df27c4d | 1765 | int in_radix; |
06ea65a3 JB |
1766 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
1767 | int dummy_root; | |
1768 | #endif | |
3f157a2f | 1769 | u64 defrag_trans_start; |
6702ed49 | 1770 | struct btrfs_key defrag_progress; |
0ef3e66b | 1771 | struct btrfs_key defrag_max; |
6702ed49 | 1772 | int defrag_running; |
58176a96 | 1773 | char *name; |
0b86a832 CM |
1774 | |
1775 | /* the dirty list is only used by non-reference counted roots */ | |
1776 | struct list_head dirty_list; | |
7b128766 | 1777 | |
5d4f98a2 YZ |
1778 | struct list_head root_list; |
1779 | ||
2ab28f32 JB |
1780 | spinlock_t log_extents_lock[2]; |
1781 | struct list_head logged_list[2]; | |
1782 | ||
d68fc57b | 1783 | spinlock_t orphan_lock; |
8a35d95f | 1784 | atomic_t orphan_inodes; |
d68fc57b YZ |
1785 | struct btrfs_block_rsv *orphan_block_rsv; |
1786 | int orphan_item_inserted; | |
1787 | int orphan_cleanup_state; | |
3394e160 | 1788 | |
5d4f98a2 YZ |
1789 | spinlock_t inode_lock; |
1790 | /* red-black tree that keeps track of in-memory inodes */ | |
1791 | struct rb_root inode_tree; | |
1792 | ||
16cdcec7 MX |
1793 | /* |
1794 | * radix tree that keeps track of delayed nodes of every inode, | |
1795 | * protected by inode_lock | |
1796 | */ | |
1797 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1798 | /* |
1799 | * right now this just gets used so that a root has its own devid | |
1800 | * for stat. It may be used for more later | |
1801 | */ | |
0ee5dc67 | 1802 | dev_t anon_dev; |
f1ebcc74 LB |
1803 | |
1804 | int force_cow; | |
8ea05e3a | 1805 | |
5f3ab90a | 1806 | spinlock_t root_item_lock; |
b0feb9d9 | 1807 | atomic_t refs; |
eb73c1b7 | 1808 | |
573bfb72 | 1809 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1810 | spinlock_t delalloc_lock; |
1811 | /* | |
1812 | * all of the inodes that have delalloc bytes. It is possible for | |
1813 | * this list to be empty even when there is still dirty data=ordered | |
1814 | * extents waiting to finish IO. | |
1815 | */ | |
1816 | struct list_head delalloc_inodes; | |
1817 | struct list_head delalloc_root; | |
1818 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1819 | |
1820 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1821 | /* |
1822 | * this is used by the balancing code to wait for all the pending | |
1823 | * ordered extents | |
1824 | */ | |
1825 | spinlock_t ordered_extent_lock; | |
1826 | ||
1827 | /* | |
1828 | * all of the data=ordered extents pending writeback | |
1829 | * these can span multiple transactions and basically include | |
1830 | * every dirty data page that isn't from nodatacow | |
1831 | */ | |
1832 | struct list_head ordered_extents; | |
1833 | struct list_head ordered_root; | |
1834 | u64 nr_ordered_extents; | |
2c686537 DS |
1835 | |
1836 | /* | |
1837 | * Number of currently running SEND ioctls to prevent | |
1838 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1839 | */ | |
1840 | int send_in_progress; | |
8257b2dc MX |
1841 | struct btrfs_subvolume_writers *subv_writers; |
1842 | atomic_t will_be_snapshoted; | |
62e2749e CM |
1843 | }; |
1844 | ||
4cb5300b CM |
1845 | struct btrfs_ioctl_defrag_range_args { |
1846 | /* start of the defrag operation */ | |
1847 | __u64 start; | |
1848 | ||
1849 | /* number of bytes to defrag, use (u64)-1 to say all */ | |
1850 | __u64 len; | |
1851 | ||
1852 | /* | |
1853 | * flags for the operation, which can include turning | |
1854 | * on compression for this one defrag | |
1855 | */ | |
1856 | __u64 flags; | |
1857 | ||
1858 | /* | |
1859 | * any extent bigger than this will be considered | |
1860 | * already defragged. Use 0 to take the kernel default | |
1861 | * Use 1 to say every single extent must be rewritten | |
1862 | */ | |
1863 | __u32 extent_thresh; | |
1864 | ||
1865 | /* | |
1866 | * which compression method to use if turning on compression | |
1867 | * for this defrag operation. If unspecified, zlib will | |
1868 | * be used | |
1869 | */ | |
1870 | __u32 compress_type; | |
1871 | ||
1872 | /* spare for later */ | |
1873 | __u32 unused[4]; | |
1874 | }; | |
1875 | ||
1876 | ||
1e1d2701 CM |
1877 | /* |
1878 | * inode items have the data typically returned from stat and store other | |
1879 | * info about object characteristics. There is one for every file and dir in | |
1880 | * the FS | |
1881 | */ | |
9078a3e1 | 1882 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af | 1883 | #define BTRFS_INODE_REF_KEY 12 |
f186373f | 1884 | #define BTRFS_INODE_EXTREF_KEY 13 |
0660b5af CM |
1885 | #define BTRFS_XATTR_ITEM_KEY 24 |
1886 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 1887 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
1888 | |
1889 | /* | |
1890 | * dir items are the name -> inode pointers in a directory. There is one | |
1891 | * for every name in a directory. | |
1892 | */ | |
0660b5af CM |
1893 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
1894 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
1895 | #define BTRFS_DIR_ITEM_KEY 84 | |
1896 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 1897 | /* |
9078a3e1 | 1898 | * extent data is for file data |
1e1d2701 | 1899 | */ |
0660b5af | 1900 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 1901 | |
f254e52c | 1902 | /* |
d20f7043 CM |
1903 | * extent csums are stored in a separate tree and hold csums for |
1904 | * an entire extent on disk. | |
f254e52c | 1905 | */ |
d20f7043 | 1906 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 1907 | |
1e1d2701 | 1908 | /* |
d4a78947 | 1909 | * root items point to tree roots. They are typically in the root |
1e1d2701 CM |
1910 | * tree used by the super block to find all the other trees |
1911 | */ | |
0660b5af CM |
1912 | #define BTRFS_ROOT_ITEM_KEY 132 |
1913 | ||
1914 | /* | |
1915 | * root backrefs tie subvols and snapshots to the directory entries that | |
1916 | * reference them | |
1917 | */ | |
1918 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1919 | ||
1920 | /* | |
1921 | * root refs make a fast index for listing all of the snapshots and | |
1922 | * subvolumes referenced by a given root. They point directly to the | |
1923 | * directory item in the root that references the subvol | |
1924 | */ | |
1925 | #define BTRFS_ROOT_REF_KEY 156 | |
1926 | ||
1e1d2701 CM |
1927 | /* |
1928 | * extent items are in the extent map tree. These record which blocks | |
1929 | * are used, and how many references there are to each block | |
1930 | */ | |
0660b5af | 1931 | #define BTRFS_EXTENT_ITEM_KEY 168 |
5d4f98a2 | 1932 | |
3173a18f JB |
1933 | /* |
1934 | * The same as the BTRFS_EXTENT_ITEM_KEY, except it's metadata we already know | |
1935 | * the length, so we save the level in key->offset instead of the length. | |
1936 | */ | |
1937 | #define BTRFS_METADATA_ITEM_KEY 169 | |
1938 | ||
5d4f98a2 YZ |
1939 | #define BTRFS_TREE_BLOCK_REF_KEY 176 |
1940 | ||
1941 | #define BTRFS_EXTENT_DATA_REF_KEY 178 | |
1942 | ||
1943 | #define BTRFS_EXTENT_REF_V0_KEY 180 | |
1944 | ||
1945 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 | |
1946 | ||
1947 | #define BTRFS_SHARED_DATA_REF_KEY 184 | |
9078a3e1 CM |
1948 | |
1949 | /* | |
1950 | * block groups give us hints into the extent allocation trees. Which | |
1951 | * blocks are free etc etc | |
1952 | */ | |
0660b5af | 1953 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 1954 | |
0660b5af CM |
1955 | #define BTRFS_DEV_EXTENT_KEY 204 |
1956 | #define BTRFS_DEV_ITEM_KEY 216 | |
1957 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 1958 | |
630dc772 AJ |
1959 | /* |
1960 | * Records the overall state of the qgroups. | |
1961 | * There's only one instance of this key present, | |
1962 | * (0, BTRFS_QGROUP_STATUS_KEY, 0) | |
1963 | */ | |
1964 | #define BTRFS_QGROUP_STATUS_KEY 240 | |
1965 | /* | |
1966 | * Records the currently used space of the qgroup. | |
1967 | * One key per qgroup, (0, BTRFS_QGROUP_INFO_KEY, qgroupid). | |
1968 | */ | |
1969 | #define BTRFS_QGROUP_INFO_KEY 242 | |
1970 | /* | |
1971 | * Contains the user configured limits for the qgroup. | |
1972 | * One key per qgroup, (0, BTRFS_QGROUP_LIMIT_KEY, qgroupid). | |
1973 | */ | |
1974 | #define BTRFS_QGROUP_LIMIT_KEY 244 | |
1975 | /* | |
1976 | * Records the child-parent relationship of qgroups. For | |
1977 | * each relation, 2 keys are present: | |
1978 | * (childid, BTRFS_QGROUP_RELATION_KEY, parentid) | |
1979 | * (parentid, BTRFS_QGROUP_RELATION_KEY, childid) | |
1980 | */ | |
1981 | #define BTRFS_QGROUP_RELATION_KEY 246 | |
1982 | ||
0940ebf6 ID |
1983 | #define BTRFS_BALANCE_ITEM_KEY 248 |
1984 | ||
733f4fbb SB |
1985 | /* |
1986 | * Persistantly stores the io stats in the device tree. | |
1987 | * One key for all stats, (0, BTRFS_DEV_STATS_KEY, devid). | |
1988 | */ | |
1989 | #define BTRFS_DEV_STATS_KEY 249 | |
1990 | ||
a2bff640 SB |
1991 | /* |
1992 | * Persistantly stores the device replace state in the device tree. | |
1993 | * The key is built like this: (0, BTRFS_DEV_REPLACE_KEY, 0). | |
1994 | */ | |
1995 | #define BTRFS_DEV_REPLACE_KEY 250 | |
1996 | ||
07b30a49 SB |
1997 | /* |
1998 | * Stores items that allow to quickly map UUIDs to something else. | |
1999 | * These items are part of the filesystem UUID tree. | |
2000 | * The key is built like this: | |
2001 | * (UUID_upper_64_bits, BTRFS_UUID_KEY*, UUID_lower_64_bits). | |
2002 | */ | |
2003 | #if BTRFS_UUID_SIZE != 16 | |
2004 | #error "UUID items require BTRFS_UUID_SIZE == 16!" | |
2005 | #endif | |
2006 | #define BTRFS_UUID_KEY_SUBVOL 251 /* for UUIDs assigned to subvols */ | |
2007 | #define BTRFS_UUID_KEY_RECEIVED_SUBVOL 252 /* for UUIDs assigned to | |
2008 | * received subvols */ | |
2009 | ||
1e1d2701 CM |
2010 | /* |
2011 | * string items are for debugging. They just store a short string of | |
2012 | * data in the FS | |
2013 | */ | |
9078a3e1 CM |
2014 | #define BTRFS_STRING_ITEM_KEY 253 |
2015 | ||
0942caa3 DS |
2016 | /* |
2017 | * Flags for mount options. | |
2018 | * | |
2019 | * Note: don't forget to add new options to btrfs_show_options() | |
2020 | */ | |
21ad10cf CM |
2021 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
2022 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
2023 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 2024 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 2025 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 2026 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 2027 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 2028 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 2029 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 2030 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 2031 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 2032 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 2033 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 2034 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 2035 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 2036 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 2037 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 2038 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
af31f5e5 | 2039 | #define BTRFS_MOUNT_RECOVERY (1 << 18) |
9555c6c1 | 2040 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
2041 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
2042 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 2043 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 2044 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
3818aea2 | 2045 | #define BTRFS_MOUNT_CHANGE_INODE_CACHE (1 << 24) |
b6cda9bc | 2046 | |
8b87dc17 DS |
2047 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
2048 | ||
b6cda9bc CM |
2049 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
2050 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 2051 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
b6cda9bc CM |
2052 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ |
2053 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
2054 | /* |
2055 | * Inode flags | |
2056 | */ | |
fdebe2bd Y |
2057 | #define BTRFS_INODE_NODATASUM (1 << 0) |
2058 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
2059 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 2060 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 2061 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
2062 | #define BTRFS_INODE_SYNC (1 << 5) |
2063 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
2064 | #define BTRFS_INODE_APPEND (1 << 7) | |
2065 | #define BTRFS_INODE_NODUMP (1 << 8) | |
2066 | #define BTRFS_INODE_NOATIME (1 << 9) | |
2067 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 2068 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 2069 | |
08fe4db1 LZ |
2070 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
2071 | ||
cfed81a0 CM |
2072 | struct btrfs_map_token { |
2073 | struct extent_buffer *eb; | |
2074 | char *kaddr; | |
2075 | unsigned long offset; | |
2076 | }; | |
2077 | ||
2078 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) | |
2079 | { | |
ad914559 | 2080 | token->kaddr = NULL; |
cfed81a0 CM |
2081 | } |
2082 | ||
5f39d397 CM |
2083 | /* some macros to generate set/get funcs for the struct fields. This |
2084 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
2085 | * one for u8: | |
2086 | */ | |
2087 | #define le8_to_cpu(v) (v) | |
2088 | #define cpu_to_le8(v) (v) | |
2089 | #define __le8 u8 | |
2090 | ||
2091 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
2092 | read_extent_buffer(eb, (char *)(result), \ | |
2093 | ((unsigned long)(ptr)) + \ | |
2094 | offsetof(type, member), \ | |
2095 | sizeof(((type *)0)->member))) | |
2096 | ||
2097 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
2098 | write_extent_buffer(eb, (char *)(result), \ | |
2099 | ((unsigned long)(ptr)) + \ | |
2100 | offsetof(type, member), \ | |
2101 | sizeof(((type *)0)->member))) | |
2102 | ||
18077bb4 LZ |
2103 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
2104 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
2105 | unsigned long off, \ | |
2106 | struct btrfs_map_token *token); \ | |
2107 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
2108 | unsigned long off, u##bits val, \ | |
2109 | struct btrfs_map_token *token); \ | |
2110 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ | |
2111 | unsigned long off) \ | |
2112 | { \ | |
2113 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
2114 | } \ | |
2115 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ | |
2116 | unsigned long off, u##bits val) \ | |
2117 | { \ | |
2118 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
2119 | } | |
2120 | ||
2121 | DECLARE_BTRFS_SETGET_BITS(8) | |
2122 | DECLARE_BTRFS_SETGET_BITS(16) | |
2123 | DECLARE_BTRFS_SETGET_BITS(32) | |
2124 | DECLARE_BTRFS_SETGET_BITS(64) | |
2125 | ||
5f39d397 | 2126 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
18077bb4 LZ |
2127 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
2128 | { \ | |
2129 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2130 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
2131 | } \ | |
2132 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
2133 | u##bits val) \ | |
2134 | { \ | |
2135 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2136 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
2137 | } \ | |
2138 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ | |
2139 | struct btrfs_map_token *token) \ | |
2140 | { \ | |
2141 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2142 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
2143 | } \ | |
2144 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
2145 | type *s, u##bits val, \ | |
2146 | struct btrfs_map_token *token) \ | |
2147 | { \ | |
2148 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2149 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
2150 | } | |
5f39d397 CM |
2151 | |
2152 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
2153 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
2154 | { \ | |
727011e0 | 2155 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 2156 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 2157 | return res; \ |
5f39d397 CM |
2158 | } \ |
2159 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
2160 | u##bits val) \ | |
2161 | { \ | |
727011e0 | 2162 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 2163 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 2164 | } |
9078a3e1 | 2165 | |
5f39d397 CM |
2166 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
2167 | static inline u##bits btrfs_##name(type *s) \ | |
2168 | { \ | |
2169 | return le##bits##_to_cpu(s->member); \ | |
2170 | } \ | |
2171 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
2172 | { \ | |
2173 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
2174 | } |
2175 | ||
0b86a832 CM |
2176 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
2177 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
2178 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
2179 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
2180 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
2181 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
2182 | start_offset, 64); | |
0b86a832 CM |
2183 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
2184 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
2185 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
2186 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
2187 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 2188 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 2189 | |
8a4b83cc CM |
2190 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
2191 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
2192 | total_bytes, 64); | |
2193 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
2194 | bytes_used, 64); | |
2195 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
2196 | io_align, 32); | |
2197 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
2198 | io_width, 32); | |
2199 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
2200 | sector_size, 32); | |
2201 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
2202 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
2203 | dev_group, 32); | |
2204 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
2205 | seek_speed, 8); | |
2206 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
2207 | bandwidth, 8); | |
2b82032c YZ |
2208 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
2209 | generation, 64); | |
8a4b83cc | 2210 | |
410ba3a2 | 2211 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 2212 | { |
410ba3a2 | 2213 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
2214 | } |
2215 | ||
1473b24e | 2216 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 2217 | { |
1473b24e | 2218 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
2219 | } |
2220 | ||
e17cade2 | 2221 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
2222 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
2223 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
2224 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
2225 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
2226 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
2227 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
2228 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 2229 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
2230 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
2231 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
2232 | ||
e17cade2 CM |
2233 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
2234 | { | |
2235 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
2236 | } | |
2237 | ||
2238 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
2239 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
2240 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
2241 | stripe_len, 64); | |
2242 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
2243 | io_align, 32); | |
2244 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
2245 | io_width, 32); | |
2246 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
2247 | sector_size, 32); | |
2248 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
2249 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
2250 | num_stripes, 16); | |
321aecc6 CM |
2251 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
2252 | sub_stripes, 16); | |
0b86a832 CM |
2253 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
2254 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
2255 | ||
2256 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
2257 | int nr) | |
2258 | { | |
2259 | unsigned long offset = (unsigned long)c; | |
2260 | offset += offsetof(struct btrfs_chunk, stripe); | |
2261 | offset += nr * sizeof(struct btrfs_stripe); | |
2262 | return (struct btrfs_stripe *)offset; | |
2263 | } | |
2264 | ||
a443755f CM |
2265 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
2266 | { | |
2267 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
2268 | } | |
2269 | ||
0b86a832 CM |
2270 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
2271 | struct btrfs_chunk *c, int nr) | |
2272 | { | |
2273 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
2274 | } | |
2275 | ||
0b86a832 CM |
2276 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
2277 | struct btrfs_chunk *c, int nr) | |
2278 | { | |
2279 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
2280 | } | |
2281 | ||
5f39d397 CM |
2282 | /* struct btrfs_block_group_item */ |
2283 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
2284 | used, 64); | |
2285 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
2286 | used, 64); | |
0b86a832 CM |
2287 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
2288 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
2289 | |
2290 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
2291 | struct btrfs_block_group_item, chunk_objectid, 64); |
2292 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
2293 | struct btrfs_block_group_item, flags, 64); | |
2294 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
2295 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 2296 | |
3954401f CM |
2297 | /* struct btrfs_inode_ref */ |
2298 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 2299 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 2300 | |
f186373f MF |
2301 | /* struct btrfs_inode_extref */ |
2302 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
2303 | parent_objectid, 64); | |
2304 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
2305 | name_len, 16); | |
2306 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
2307 | ||
5f39d397 CM |
2308 | /* struct btrfs_inode_item */ |
2309 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 2310 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 2311 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 2312 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 2313 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
2314 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
2315 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
2316 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
2317 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
2318 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 2319 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 2320 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
2321 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
2322 | generation, 64); | |
2323 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
2324 | sequence, 64); | |
2325 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
2326 | transid, 64); | |
2327 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
2328 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
2329 | nbytes, 64); | |
2330 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
2331 | block_group, 64); | |
2332 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
2333 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
2334 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
2335 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
2336 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
2337 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
1e1d2701 | 2338 | |
0b86a832 | 2339 | static inline struct btrfs_timespec * |
5f39d397 | 2340 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2341 | { |
5f39d397 CM |
2342 | unsigned long ptr = (unsigned long)inode_item; |
2343 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 2344 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2345 | } |
2346 | ||
0b86a832 | 2347 | static inline struct btrfs_timespec * |
5f39d397 | 2348 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2349 | { |
5f39d397 CM |
2350 | unsigned long ptr = (unsigned long)inode_item; |
2351 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 2352 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2353 | } |
2354 | ||
0b86a832 | 2355 | static inline struct btrfs_timespec * |
5f39d397 | 2356 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2357 | { |
5f39d397 CM |
2358 | unsigned long ptr = (unsigned long)inode_item; |
2359 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 2360 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2361 | } |
2362 | ||
0b86a832 CM |
2363 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
2364 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
2365 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
2366 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 2367 | |
0b86a832 | 2368 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
2369 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
2370 | chunk_tree, 64); | |
2371 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
2372 | chunk_objectid, 64); | |
2373 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
2374 | chunk_offset, 64); | |
0b86a832 CM |
2375 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
2376 | ||
231e88f4 | 2377 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
2378 | { |
2379 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 2380 | return (unsigned long)dev + ptr; |
e17cade2 CM |
2381 | } |
2382 | ||
5d4f98a2 YZ |
2383 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
2384 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
2385 | generation, 64); | |
2386 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 2387 | |
5d4f98a2 YZ |
2388 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
2389 | ||
2390 | ||
2391 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
2392 | ||
2393 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
2394 | struct btrfs_tree_block_info *item, | |
2395 | struct btrfs_disk_key *key) | |
2396 | { | |
2397 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
2398 | } | |
2399 | ||
2400 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
2401 | struct btrfs_tree_block_info *item, | |
2402 | struct btrfs_disk_key *key) | |
2403 | { | |
2404 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
2405 | } | |
e20d96d6 | 2406 | |
5d4f98a2 YZ |
2407 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
2408 | root, 64); | |
2409 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
2410 | objectid, 64); | |
2411 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
2412 | offset, 64); | |
2413 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
2414 | count, 32); | |
2415 | ||
2416 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
2417 | count, 32); | |
2418 | ||
2419 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
2420 | type, 8); | |
2421 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
2422 | offset, 64); | |
2423 | ||
2424 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
2425 | { | |
2426 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
2427 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
2428 | return sizeof(struct btrfs_extent_inline_ref); | |
2429 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
2430 | return sizeof(struct btrfs_shared_data_ref) + | |
2431 | sizeof(struct btrfs_extent_inline_ref); | |
2432 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
2433 | return sizeof(struct btrfs_extent_data_ref) + | |
2434 | offsetof(struct btrfs_extent_inline_ref, offset); | |
2435 | BUG(); | |
2436 | return 0; | |
2437 | } | |
2438 | ||
2439 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
2440 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
2441 | generation, 64); | |
2442 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
2443 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 2444 | |
5f39d397 CM |
2445 | /* struct btrfs_node */ |
2446 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 2447 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
2448 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
2449 | blockptr, 64); | |
2450 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
2451 | generation, 64); | |
e20d96d6 | 2452 | |
5f39d397 | 2453 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 2454 | { |
5f39d397 CM |
2455 | unsigned long ptr; |
2456 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2457 | sizeof(struct btrfs_key_ptr) * nr; | |
2458 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
2459 | } |
2460 | ||
5f39d397 CM |
2461 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
2462 | int nr, u64 val) | |
cf27e1ee | 2463 | { |
5f39d397 CM |
2464 | unsigned long ptr; |
2465 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2466 | sizeof(struct btrfs_key_ptr) * nr; | |
2467 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
2468 | } |
2469 | ||
74493f7a CM |
2470 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
2471 | { | |
2472 | unsigned long ptr; | |
2473 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2474 | sizeof(struct btrfs_key_ptr) * nr; | |
2475 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
2476 | } | |
2477 | ||
2478 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
2479 | int nr, u64 val) | |
2480 | { | |
2481 | unsigned long ptr; | |
2482 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2483 | sizeof(struct btrfs_key_ptr) * nr; | |
2484 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
2485 | } | |
2486 | ||
810191ff | 2487 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 2488 | { |
5f39d397 CM |
2489 | return offsetof(struct btrfs_node, ptrs) + |
2490 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
2491 | } |
2492 | ||
e644d021 CM |
2493 | void btrfs_node_key(struct extent_buffer *eb, |
2494 | struct btrfs_disk_key *disk_key, int nr); | |
2495 | ||
5f39d397 CM |
2496 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
2497 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 2498 | { |
5f39d397 CM |
2499 | unsigned long ptr; |
2500 | ptr = btrfs_node_key_ptr_offset(nr); | |
2501 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
2502 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
2503 | } |
2504 | ||
5f39d397 CM |
2505 | /* struct btrfs_item */ |
2506 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
2507 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
2508 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
2509 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 2510 | |
5f39d397 | 2511 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 2512 | { |
5f39d397 CM |
2513 | return offsetof(struct btrfs_leaf, items) + |
2514 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
2515 | } |
2516 | ||
dd3cc16b | 2517 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 2518 | { |
5f39d397 | 2519 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
2520 | } |
2521 | ||
5f39d397 CM |
2522 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
2523 | struct btrfs_item *item) | |
0783fcfc | 2524 | { |
5f39d397 | 2525 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
2526 | } |
2527 | ||
5f39d397 | 2528 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2529 | { |
dd3cc16b | 2530 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
2531 | } |
2532 | ||
5f39d397 | 2533 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2534 | { |
dd3cc16b | 2535 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
2536 | } |
2537 | ||
5f39d397 | 2538 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2539 | { |
dd3cc16b | 2540 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
2541 | } |
2542 | ||
5f39d397 CM |
2543 | static inline void btrfs_item_key(struct extent_buffer *eb, |
2544 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2545 | { |
dd3cc16b | 2546 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 2547 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
2548 | } |
2549 | ||
5f39d397 CM |
2550 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
2551 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2552 | { |
dd3cc16b | 2553 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 2554 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
2555 | } |
2556 | ||
e02119d5 CM |
2557 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
2558 | ||
0660b5af CM |
2559 | /* |
2560 | * struct btrfs_root_ref | |
2561 | */ | |
2562 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
2563 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
2564 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
2565 | ||
5f39d397 | 2566 | /* struct btrfs_dir_item */ |
5103e947 | 2567 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
2568 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
2569 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 2570 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
2571 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
2572 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
2573 | data_len, 16); | |
2574 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
2575 | name_len, 16); | |
2576 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
2577 | transid, 64); | |
1d4f6404 | 2578 | |
5f39d397 CM |
2579 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
2580 | struct btrfs_dir_item *item, | |
2581 | struct btrfs_disk_key *key) | |
1d4f6404 | 2582 | { |
5f39d397 | 2583 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
2584 | } |
2585 | ||
5f39d397 CM |
2586 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
2587 | struct btrfs_dir_item *item, | |
2588 | struct btrfs_disk_key *key) | |
a8a2ee0c | 2589 | { |
5f39d397 | 2590 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
2591 | } |
2592 | ||
0af3d00b JB |
2593 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
2594 | num_entries, 64); | |
2595 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
2596 | num_bitmaps, 64); | |
2597 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
2598 | generation, 64); | |
2599 | ||
2600 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
2601 | struct btrfs_free_space_header *h, | |
2602 | struct btrfs_disk_key *key) | |
2603 | { | |
2604 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2605 | } | |
2606 | ||
2607 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
2608 | struct btrfs_free_space_header *h, | |
2609 | struct btrfs_disk_key *key) | |
2610 | { | |
2611 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2612 | } | |
2613 | ||
5f39d397 CM |
2614 | /* struct btrfs_disk_key */ |
2615 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2616 | objectid, 64); | |
2617 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2618 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2619 | |
e2fa7227 CM |
2620 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
2621 | struct btrfs_disk_key *disk) | |
2622 | { | |
2623 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2624 | cpu->type = disk->type; |
e2fa7227 CM |
2625 | cpu->objectid = le64_to_cpu(disk->objectid); |
2626 | } | |
2627 | ||
2628 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
2629 | struct btrfs_key *cpu) | |
2630 | { | |
2631 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2632 | disk->type = cpu->type; |
e2fa7227 CM |
2633 | disk->objectid = cpu_to_le64(cpu->objectid); |
2634 | } | |
2635 | ||
5f39d397 CM |
2636 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
2637 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2638 | { |
5f39d397 CM |
2639 | struct btrfs_disk_key disk_key; |
2640 | btrfs_node_key(eb, &disk_key, nr); | |
2641 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2642 | } |
2643 | ||
5f39d397 CM |
2644 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
2645 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2646 | { |
5f39d397 CM |
2647 | struct btrfs_disk_key disk_key; |
2648 | btrfs_item_key(eb, &disk_key, nr); | |
2649 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2650 | } |
2651 | ||
5f39d397 CM |
2652 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
2653 | struct btrfs_dir_item *item, | |
2654 | struct btrfs_key *key) | |
4d775673 | 2655 | { |
5f39d397 CM |
2656 | struct btrfs_disk_key disk_key; |
2657 | btrfs_dir_item_key(eb, item, &disk_key); | |
2658 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2659 | } |
2660 | ||
58176a96 | 2661 | |
5f39d397 | 2662 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 2663 | { |
5f39d397 | 2664 | return key->type; |
3768f368 CM |
2665 | } |
2666 | ||
5f39d397 | 2667 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2668 | { |
5f39d397 | 2669 | key->type = val; |
3768f368 CM |
2670 | } |
2671 | ||
5f39d397 | 2672 | /* struct btrfs_header */ |
db94535d | 2673 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2674 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2675 | generation, 64); | |
2676 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2677 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2678 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2679 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2680 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2681 | generation, 64); | |
2682 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2683 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2684 | nritems, 32); | |
2685 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2686 | |
63b10fc4 CM |
2687 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
2688 | { | |
2689 | return (btrfs_header_flags(eb) & flag) == flag; | |
2690 | } | |
2691 | ||
2692 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2693 | { | |
2694 | u64 flags = btrfs_header_flags(eb); | |
2695 | btrfs_set_header_flags(eb, flags | flag); | |
2696 | return (flags & flag) == flag; | |
2697 | } | |
2698 | ||
2699 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2700 | { | |
2701 | u64 flags = btrfs_header_flags(eb); | |
2702 | btrfs_set_header_flags(eb, flags & ~flag); | |
2703 | return (flags & flag) == flag; | |
2704 | } | |
2705 | ||
5d4f98a2 YZ |
2706 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2707 | { | |
2708 | u64 flags = btrfs_header_flags(eb); | |
2709 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2710 | } | |
2711 | ||
2712 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2713 | int rev) | |
2714 | { | |
2715 | u64 flags = btrfs_header_flags(eb); | |
2716 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2717 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2718 | btrfs_set_header_flags(eb, flags); | |
2719 | } | |
2720 | ||
0a4e5586 | 2721 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2722 | { |
fba6aa75 | 2723 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2724 | } |
2725 | ||
b308bc2f | 2726 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
e17cade2 | 2727 | { |
b308bc2f | 2728 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2729 | } |
2730 | ||
5f39d397 | 2731 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2732 | { |
d397712b | 2733 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2734 | } |
2735 | ||
5f39d397 | 2736 | /* struct btrfs_root_item */ |
84234f3a YZ |
2737 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2738 | generation, 64); | |
5f39d397 | 2739 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2740 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2741 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2742 | |
84234f3a YZ |
2743 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2744 | generation, 64); | |
db94535d CM |
2745 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2746 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2747 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2748 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2749 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2750 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2751 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2752 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2753 | last_snapshot, 64); | |
8ea05e3a AB |
2754 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2755 | generation_v2, 64); | |
2756 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2757 | ctransid, 64); | |
2758 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2759 | otransid, 64); | |
2760 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2761 | stransid, 64); | |
2762 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2763 | rtransid, 64); | |
123abc88 | 2764 | |
b83cc969 LZ |
2765 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2766 | { | |
6ed3cf2c | 2767 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2768 | } |
2769 | ||
af31f5e5 CM |
2770 | /* struct btrfs_root_backup */ |
2771 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2772 | tree_root, 64); | |
2773 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2774 | tree_root_gen, 64); | |
2775 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2776 | tree_root_level, 8); | |
2777 | ||
2778 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2779 | chunk_root, 64); | |
2780 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2781 | chunk_root_gen, 64); | |
2782 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2783 | chunk_root_level, 8); | |
2784 | ||
2785 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2786 | extent_root, 64); | |
2787 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2788 | extent_root_gen, 64); | |
2789 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2790 | extent_root_level, 8); | |
2791 | ||
2792 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2793 | fs_root, 64); | |
2794 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2795 | fs_root_gen, 64); | |
2796 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2797 | fs_root_level, 8); | |
2798 | ||
2799 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2800 | dev_root, 64); | |
2801 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2802 | dev_root_gen, 64); | |
2803 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2804 | dev_root_level, 8); | |
2805 | ||
2806 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2807 | csum_root, 64); | |
2808 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2809 | csum_root_gen, 64); | |
2810 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2811 | csum_root_level, 8); | |
2812 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2813 | total_bytes, 64); | |
2814 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2815 | bytes_used, 64); | |
2816 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2817 | num_devices, 64); | |
2818 | ||
0940ebf6 ID |
2819 | /* struct btrfs_balance_item */ |
2820 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2821 | |
0940ebf6 ID |
2822 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2823 | struct btrfs_balance_item *bi, | |
2824 | struct btrfs_disk_balance_args *ba) | |
2825 | { | |
2826 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2827 | } | |
2828 | ||
2829 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2830 | struct btrfs_balance_item *bi, | |
2831 | struct btrfs_disk_balance_args *ba) | |
2832 | { | |
2833 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2834 | } | |
2835 | ||
2836 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2837 | struct btrfs_balance_item *bi, | |
2838 | struct btrfs_disk_balance_args *ba) | |
2839 | { | |
2840 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2841 | } | |
2842 | ||
2843 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2844 | struct btrfs_balance_item *bi, | |
2845 | struct btrfs_disk_balance_args *ba) | |
2846 | { | |
2847 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2848 | } | |
2849 | ||
2850 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2851 | struct btrfs_balance_item *bi, | |
2852 | struct btrfs_disk_balance_args *ba) | |
2853 | { | |
2854 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2855 | } | |
2856 | ||
2857 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2858 | struct btrfs_balance_item *bi, | |
2859 | struct btrfs_disk_balance_args *ba) | |
2860 | { | |
2861 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2862 | } | |
2863 | ||
2864 | static inline void | |
2865 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2866 | struct btrfs_disk_balance_args *disk) | |
2867 | { | |
2868 | memset(cpu, 0, sizeof(*cpu)); | |
2869 | ||
2870 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2871 | cpu->usage = le64_to_cpu(disk->usage); | |
2872 | cpu->devid = le64_to_cpu(disk->devid); | |
2873 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2874 | cpu->pend = le64_to_cpu(disk->pend); | |
2875 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2876 | cpu->vend = le64_to_cpu(disk->vend); | |
2877 | cpu->target = le64_to_cpu(disk->target); | |
2878 | cpu->flags = le64_to_cpu(disk->flags); | |
2879 | } | |
2880 | ||
2881 | static inline void | |
2882 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2883 | struct btrfs_balance_args *cpu) | |
2884 | { | |
2885 | memset(disk, 0, sizeof(*disk)); | |
2886 | ||
2887 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2888 | disk->usage = cpu_to_le64(cpu->usage); | |
2889 | disk->devid = cpu_to_le64(cpu->devid); | |
2890 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2891 | disk->pend = cpu_to_le64(cpu->pend); | |
2892 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2893 | disk->vend = cpu_to_le64(cpu->vend); | |
2894 | disk->target = cpu_to_le64(cpu->target); | |
2895 | disk->flags = cpu_to_le64(cpu->flags); | |
2896 | } | |
2897 | ||
2898 | /* struct btrfs_super_block */ | |
db94535d | 2899 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2900 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2901 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2902 | generation, 64); | |
2903 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2904 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2905 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2906 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2907 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2908 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2909 | root_level, 8); | |
0b86a832 CM |
2910 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2911 | chunk_root, 64); | |
2912 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2913 | chunk_root_level, 8); |
2914 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2915 | log_root, 64); | |
c3027eb5 CM |
2916 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2917 | log_root_transid, 64); | |
e02119d5 CM |
2918 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2919 | log_root_level, 8); | |
db94535d CM |
2920 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2921 | total_bytes, 64); | |
2922 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2923 | bytes_used, 64); | |
5f39d397 CM |
2924 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2925 | sectorsize, 32); | |
2926 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2927 | nodesize, 32); | |
2928 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
2929 | leafsize, 32); | |
87ee04eb CM |
2930 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2931 | stripesize, 32); | |
5f39d397 CM |
2932 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2933 | root_dir_objectid, 64); | |
8a4b83cc CM |
2934 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2935 | num_devices, 64); | |
f2b636e8 JB |
2936 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2937 | compat_flags, 64); | |
2938 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2939 | compat_ro_flags, 64); |
f2b636e8 JB |
2940 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2941 | incompat_flags, 64); | |
607d432d JB |
2942 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2943 | csum_type, 16); | |
0af3d00b JB |
2944 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2945 | cache_generation, 64); | |
3cae210f | 2946 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2947 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2948 | uuid_tree_generation, 64); | |
607d432d JB |
2949 | |
2950 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2951 | { | |
1104a885 DS |
2952 | u16 t = btrfs_super_csum_type(s); |
2953 | /* | |
2954 | * csum type is validated at mount time | |
2955 | */ | |
607d432d JB |
2956 | return btrfs_csum_sizes[t]; |
2957 | } | |
2e635a27 | 2958 | |
5f39d397 | 2959 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2960 | { |
5f39d397 | 2961 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2962 | } |
2963 | ||
5f39d397 CM |
2964 | /* struct btrfs_file_extent_item */ |
2965 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2966 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2967 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2968 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2969 | struct btrfs_file_extent_item, offset, 64); | |
2970 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2971 | struct btrfs_file_extent_item, generation, 64); | |
2972 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2973 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2974 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2975 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2976 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2977 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2978 | |
d397712b CM |
2979 | static inline unsigned long |
2980 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2981 | { |
5f39d397 | 2982 | unsigned long offset = (unsigned long)e; |
db94535d | 2983 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 2984 | return offset; |
236454df CM |
2985 | } |
2986 | ||
2987 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2988 | { | |
db94535d | 2989 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
2990 | } |
2991 | ||
db94535d CM |
2992 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2993 | disk_bytenr, 64); | |
5f39d397 CM |
2994 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2995 | generation, 64); | |
db94535d CM |
2996 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2997 | disk_num_bytes, 64); | |
5f39d397 CM |
2998 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2999 | offset, 64); | |
db94535d CM |
3000 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
3001 | num_bytes, 64); | |
c8b97818 CM |
3002 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
3003 | ram_bytes, 64); | |
3004 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
3005 | compression, 8); | |
3006 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
3007 | encryption, 8); | |
3008 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
3009 | other_encoding, 16); | |
3010 | ||
c8b97818 CM |
3011 | /* |
3012 | * this returns the number of bytes used by the item on disk, minus the | |
3013 | * size of any extent headers. If a file is compressed on disk, this is | |
3014 | * the compressed size | |
3015 | */ | |
3016 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
3017 | struct btrfs_item *e) | |
3018 | { | |
3019 | unsigned long offset; | |
3020 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
3021 | return btrfs_item_size(eb, e) - offset; | |
3022 | } | |
9f5fae2f | 3023 | |
514ac8ad CM |
3024 | /* this returns the number of file bytes represented by the inline item. |
3025 | * If an item is compressed, this is the uncompressed size | |
3026 | */ | |
3027 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
3028 | int slot, | |
3029 | struct btrfs_file_extent_item *fi) | |
3030 | { | |
3031 | struct btrfs_map_token token; | |
3032 | ||
3033 | btrfs_init_map_token(&token); | |
3034 | /* | |
3035 | * return the space used on disk if this item isn't | |
3036 | * compressed or encoded | |
3037 | */ | |
3038 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && | |
3039 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && | |
3040 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { | |
3041 | return btrfs_file_extent_inline_item_len(eb, | |
3042 | btrfs_item_nr(slot)); | |
3043 | } | |
3044 | ||
3045 | /* otherwise use the ram bytes field */ | |
3046 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); | |
3047 | } | |
3048 | ||
3049 | ||
733f4fbb SB |
3050 | /* btrfs_dev_stats_item */ |
3051 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
3052 | struct btrfs_dev_stats_item *ptr, | |
3053 | int index) | |
3054 | { | |
3055 | u64 val; | |
3056 | ||
3057 | read_extent_buffer(eb, &val, | |
3058 | offsetof(struct btrfs_dev_stats_item, values) + | |
3059 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
3060 | sizeof(val)); | |
3061 | return val; | |
3062 | } | |
3063 | ||
3064 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
3065 | struct btrfs_dev_stats_item *ptr, | |
3066 | int index, u64 val) | |
3067 | { | |
3068 | write_extent_buffer(eb, &val, | |
3069 | offsetof(struct btrfs_dev_stats_item, values) + | |
3070 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
3071 | sizeof(val)); | |
3072 | } | |
3073 | ||
630dc772 AJ |
3074 | /* btrfs_qgroup_status_item */ |
3075 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
3076 | generation, 64); | |
3077 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
3078 | version, 64); | |
3079 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
3080 | flags, 64); | |
2f232036 JS |
3081 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
3082 | rescan, 64); | |
630dc772 AJ |
3083 | |
3084 | /* btrfs_qgroup_info_item */ | |
3085 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
3086 | generation, 64); | |
3087 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
3088 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
3089 | rfer_cmpr, 64); | |
3090 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
3091 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
3092 | excl_cmpr, 64); | |
3093 | ||
3094 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
3095 | struct btrfs_qgroup_info_item, generation, 64); | |
3096 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
3097 | rfer, 64); | |
3098 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
3099 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
3100 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
3101 | excl, 64); | |
3102 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
3103 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
3104 | ||
3105 | /* btrfs_qgroup_limit_item */ | |
3106 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
3107 | flags, 64); | |
3108 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
3109 | max_rfer, 64); | |
3110 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
3111 | max_excl, 64); | |
3112 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
3113 | rsv_rfer, 64); | |
3114 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
3115 | rsv_excl, 64); | |
3116 | ||
a2bff640 SB |
3117 | /* btrfs_dev_replace_item */ |
3118 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
3119 | struct btrfs_dev_replace_item, src_devid, 64); | |
3120 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
3121 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
3122 | 64); | |
3123 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
3124 | replace_state, 64); | |
3125 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
3126 | time_started, 64); | |
3127 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
3128 | time_stopped, 64); | |
3129 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
3130 | num_write_errors, 64); | |
3131 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
3132 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
3133 | 64); | |
3134 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
3135 | cursor_left, 64); | |
3136 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
3137 | cursor_right, 64); | |
3138 | ||
3139 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
3140 | struct btrfs_dev_replace_item, src_devid, 64); | |
3141 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
3142 | struct btrfs_dev_replace_item, | |
3143 | cont_reading_from_srcdev_mode, 64); | |
3144 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
3145 | struct btrfs_dev_replace_item, replace_state, 64); | |
3146 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
3147 | struct btrfs_dev_replace_item, time_started, 64); | |
3148 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
3149 | struct btrfs_dev_replace_item, time_stopped, 64); | |
3150 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
3151 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
3152 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
3153 | struct btrfs_dev_replace_item, | |
3154 | num_uncorrectable_read_errors, 64); | |
3155 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
3156 | struct btrfs_dev_replace_item, cursor_left, 64); | |
3157 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
3158 | struct btrfs_dev_replace_item, cursor_right, 64); | |
3159 | ||
815745cf | 3160 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
e20d96d6 CM |
3161 | { |
3162 | return sb->s_fs_info; | |
3163 | } | |
3164 | ||
d397712b CM |
3165 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
3166 | { | |
db94535d CM |
3167 | if (level == 0) |
3168 | return root->leafsize; | |
3169 | return root->nodesize; | |
3170 | } | |
3171 | ||
4beb1b8b CM |
3172 | /* helper function to cast into the data area of the leaf. */ |
3173 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 3174 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
3175 | btrfs_item_offset_nr(leaf, slot))) |
3176 | ||
3177 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
3178 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
3179 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 3180 | |
67377734 JB |
3181 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
3182 | { | |
3183 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
3184 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
3185 | } | |
3186 | ||
3b16a4e3 JB |
3187 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
3188 | { | |
3189 | return mapping_gfp_mask(mapping) & ~__GFP_FS; | |
3190 | } | |
3191 | ||
b18c6685 | 3192 | /* extent-tree.c */ |
16cdcec7 | 3193 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 3194 | unsigned num_items) |
16cdcec7 MX |
3195 | { |
3196 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
c4fbb430 | 3197 | 2 * num_items; |
07127184 JB |
3198 | } |
3199 | ||
3200 | /* | |
3201 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
3202 | * COW. | |
3203 | */ | |
3204 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, | |
3205 | unsigned num_items) | |
3206 | { | |
3207 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
3208 | num_items; | |
16cdcec7 MX |
3209 | } |
3210 | ||
1be41b78 JB |
3211 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
3212 | struct btrfs_root *root); | |
0a2b2a84 JB |
3213 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
3214 | struct btrfs_root *root); | |
fa9c0d79 | 3215 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
3216 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
3217 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 3218 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
3219 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
3220 | struct btrfs_root *root, u64 bytenr, | |
3173a18f | 3221 | u64 offset, int metadata, u64 *refs, u64 *flags); |
11833d66 YZ |
3222 | int btrfs_pin_extent(struct btrfs_root *root, |
3223 | u64 bytenr, u64 num, int reserved); | |
dcfac415 | 3224 | int btrfs_pin_extent_for_log_replay(struct btrfs_root *root, |
e688b725 | 3225 | u64 bytenr, u64 num_bytes); |
8c2a1a30 JB |
3226 | int btrfs_exclude_logged_extents(struct btrfs_root *root, |
3227 | struct extent_buffer *eb); | |
80ff3856 | 3228 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
3229 | struct btrfs_root *root, |
3230 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
3231 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
3232 | struct btrfs_fs_info *info, | |
3233 | u64 bytenr); | |
5d4f98a2 | 3234 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
6ab0a202 | 3235 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
5f39d397 | 3236 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
3237 | struct btrfs_root *root, u32 blocksize, |
3238 | u64 parent, u64 root_objectid, | |
3239 | struct btrfs_disk_key *key, int level, | |
5581a51a | 3240 | u64 hint, u64 empty_size); |
f0486c68 YZ |
3241 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
3242 | struct btrfs_root *root, | |
3243 | struct extent_buffer *buf, | |
5581a51a | 3244 | u64 parent, int last_ref); |
5d4f98a2 YZ |
3245 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
3246 | struct btrfs_root *root, | |
3247 | u64 root_objectid, u64 owner, | |
3248 | u64 offset, struct btrfs_key *ins); | |
3249 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, | |
3250 | struct btrfs_root *root, | |
3251 | u64 root_objectid, u64 owner, u64 offset, | |
3252 | struct btrfs_key *ins); | |
00361589 JB |
3253 | int btrfs_reserve_extent(struct btrfs_root *root, u64 num_bytes, |
3254 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, | |
3255 | struct btrfs_key *ins, int is_data); | |
e089f05c | 3256 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 3257 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 | 3258 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 3259 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 YZ |
3260 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
3261 | struct btrfs_root *root, | |
3262 | u64 bytenr, u64 num_bytes, u64 flags, | |
b1c79e09 | 3263 | int level, int is_data); |
31840ae1 ZY |
3264 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
3265 | struct btrfs_root *root, | |
66d7e7f0 AJ |
3266 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
3267 | u64 owner, u64 offset, int for_cow); | |
5d4f98a2 | 3268 | |
65b51a00 | 3269 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
e688b725 CM |
3270 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
3271 | u64 start, u64 len); | |
143bede5 JM |
3272 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
3273 | struct btrfs_root *root); | |
ccd467d6 | 3274 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 3275 | struct btrfs_root *root); |
b18c6685 | 3276 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
3277 | struct btrfs_root *root, |
3278 | u64 bytenr, u64 num_bytes, u64 parent, | |
66d7e7f0 | 3279 | u64 root_objectid, u64 owner, u64 offset, int for_cow); |
5d4f98a2 | 3280 | |
9078a3e1 CM |
3281 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
3282 | struct btrfs_root *root); | |
d2fb3437 | 3283 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
3284 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
3285 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 3286 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
3287 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
3288 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 3289 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 3290 | u64 size); |
1a40e23b ZY |
3291 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
3292 | struct btrfs_root *root, u64 group_start); | |
ea658bad JB |
3293 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
3294 | struct btrfs_root *root); | |
6d07bcec | 3295 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
4184ea7f | 3296 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
3297 | |
3298 | enum btrfs_reserve_flush_enum { | |
3299 | /* If we are in the transaction, we can't flush anything.*/ | |
3300 | BTRFS_RESERVE_NO_FLUSH, | |
3301 | /* | |
3302 | * Flushing delalloc may cause deadlock somewhere, in this | |
3303 | * case, use FLUSH LIMIT | |
3304 | */ | |
3305 | BTRFS_RESERVE_FLUSH_LIMIT, | |
3306 | BTRFS_RESERVE_FLUSH_ALL, | |
3307 | }; | |
3308 | ||
0ca1f7ce YZ |
3309 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
3310 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); | |
a22285a6 YZ |
3311 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
3312 | struct btrfs_root *root); | |
d68fc57b YZ |
3313 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
3314 | struct inode *inode); | |
3315 | void btrfs_orphan_release_metadata(struct inode *inode); | |
d5c12070 MX |
3316 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
3317 | struct btrfs_block_rsv *rsv, | |
3318 | int nitems, | |
ee3441b4 | 3319 | u64 *qgroup_reserved, bool use_global_rsv); |
d5c12070 MX |
3320 | void btrfs_subvolume_release_metadata(struct btrfs_root *root, |
3321 | struct btrfs_block_rsv *rsv, | |
3322 | u64 qgroup_reserved); | |
0ca1f7ce YZ |
3323 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
3324 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
3325 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); | |
3326 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); | |
66d8f3dd MX |
3327 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
3328 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, | |
3329 | unsigned short type); | |
f0486c68 YZ |
3330 | void btrfs_free_block_rsv(struct btrfs_root *root, |
3331 | struct btrfs_block_rsv *rsv); | |
4a92b1b8 | 3332 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
3333 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
3334 | enum btrfs_reserve_flush_enum flush); | |
4a92b1b8 | 3335 | int btrfs_block_rsv_check(struct btrfs_root *root, |
36ba022a JB |
3336 | struct btrfs_block_rsv *block_rsv, int min_factor); |
3337 | int btrfs_block_rsv_refill(struct btrfs_root *root, | |
08e007d2 MX |
3338 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
3339 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 YZ |
3340 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
3341 | struct btrfs_block_rsv *dst_rsv, | |
3342 | u64 num_bytes); | |
d52be818 JB |
3343 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
3344 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
3345 | int min_factor); | |
f0486c68 YZ |
3346 | void btrfs_block_rsv_release(struct btrfs_root *root, |
3347 | struct btrfs_block_rsv *block_rsv, | |
3348 | u64 num_bytes); | |
3349 | int btrfs_set_block_group_ro(struct btrfs_root *root, | |
3350 | struct btrfs_block_group_cache *cache); | |
143bede5 JM |
3351 | void btrfs_set_block_group_rw(struct btrfs_root *root, |
3352 | struct btrfs_block_group_cache *cache); | |
0af3d00b | 3353 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 3354 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 3355 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
3356 | u64 start, u64 end); | |
3357 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, | |
5378e607 | 3358 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca CM |
3359 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
3360 | struct btrfs_root *root, u64 type); | |
f7039b1d | 3361 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 3362 | |
c59021f8 | 3363 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
3364 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
3365 | struct btrfs_fs_info *fs_info); | |
31e50229 | 3366 | int __get_raid_index(u64 flags); |
8257b2dc MX |
3367 | |
3368 | int btrfs_start_nocow_write(struct btrfs_root *root); | |
3369 | void btrfs_end_nocow_write(struct btrfs_root *root); | |
dee26a9f | 3370 | /* ctree.c */ |
5d4f98a2 YZ |
3371 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
3372 | int level, int *slot); | |
3373 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
3374 | int btrfs_previous_item(struct btrfs_root *root, |
3375 | struct btrfs_path *path, u64 min_objectid, | |
3376 | int type); | |
ade2e0b3 WS |
3377 | int btrfs_previous_extent_item(struct btrfs_root *root, |
3378 | struct btrfs_path *path, u64 min_objectid); | |
afe5fea7 | 3379 | void btrfs_set_item_key_safe(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 3380 | struct btrfs_key *new_key); |
925baedd CM |
3381 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
3382 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 3383 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 3384 | struct btrfs_key *key, int lowest_level, |
de78b51a | 3385 | u64 min_trans); |
3f157a2f | 3386 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 3387 | struct btrfs_path *path, |
3f157a2f | 3388 | u64 min_trans); |
7069830a AB |
3389 | enum btrfs_compare_tree_result { |
3390 | BTRFS_COMPARE_TREE_NEW, | |
3391 | BTRFS_COMPARE_TREE_DELETED, | |
3392 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 3393 | BTRFS_COMPARE_TREE_SAME, |
7069830a AB |
3394 | }; |
3395 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, | |
3396 | struct btrfs_root *right_root, | |
3397 | struct btrfs_path *left_path, | |
3398 | struct btrfs_path *right_path, | |
3399 | struct btrfs_key *key, | |
3400 | enum btrfs_compare_tree_result result, | |
3401 | void *ctx); | |
3402 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
3403 | struct btrfs_root *right_root, | |
3404 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
3405 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
3406 | struct btrfs_root *root, struct extent_buffer *buf, | |
3407 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 3408 | struct extent_buffer **cow_ret); |
be20aa9d CM |
3409 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
3410 | struct btrfs_root *root, | |
3411 | struct extent_buffer *buf, | |
3412 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
3413 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
3414 | struct extent_buffer *buf); | |
4b90c680 | 3415 | void btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 3416 | u32 data_size); |
afe5fea7 | 3417 | void btrfs_truncate_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 3418 | u32 new_size, int from_end); |
459931ec CM |
3419 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
3420 | struct btrfs_root *root, | |
3421 | struct btrfs_path *path, | |
3422 | struct btrfs_key *new_key, | |
3423 | unsigned long split_offset); | |
ad48fd75 YZ |
3424 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
3425 | struct btrfs_root *root, | |
3426 | struct btrfs_path *path, | |
3427 | struct btrfs_key *new_key); | |
e33d5c3d KN |
3428 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
3429 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
e089f05c CM |
3430 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
3431 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
3432 | ins_len, int cow); | |
5d9e75c4 JS |
3433 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
3434 | struct btrfs_path *p, u64 time_seq); | |
2f38b3e1 AJ |
3435 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
3436 | struct btrfs_key *key, struct btrfs_path *p, | |
3437 | int find_higher, int return_any); | |
6702ed49 | 3438 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 3439 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 3440 | int start_slot, u64 *last_ret, |
a6b6e75e | 3441 | struct btrfs_key *progress); |
b3b4aa74 | 3442 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
3443 | struct btrfs_path *btrfs_alloc_path(void); |
3444 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 3445 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 3446 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 3447 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
3448 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
3449 | ||
85e21bac CM |
3450 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3451 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
3452 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
3453 | struct btrfs_root *root, | |
3454 | struct btrfs_path *path) | |
3455 | { | |
3456 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
3457 | } | |
3458 | ||
afe5fea7 | 3459 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 JM |
3460 | struct btrfs_key *cpu_key, u32 *data_size, |
3461 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
3462 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
3463 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
3464 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
3465 | struct btrfs_root *root, | |
3466 | struct btrfs_path *path, | |
3467 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
3468 | ||
3469 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
3470 | struct btrfs_root *root, | |
3471 | struct btrfs_path *path, | |
3472 | struct btrfs_key *key, | |
3473 | u32 data_size) | |
3474 | { | |
3475 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
3476 | } | |
3477 | ||
234b63a0 | 3478 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 3479 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
3480 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
3481 | u64 time_seq); | |
1c8f52a5 AB |
3482 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
3483 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
3484 | { |
3485 | ++p->slots[0]; | |
3486 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 3487 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
3488 | return 0; |
3489 | } | |
1c8f52a5 AB |
3490 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
3491 | { | |
3492 | return btrfs_next_old_item(root, p, 0); | |
3493 | } | |
5f39d397 | 3494 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
2c536799 JM |
3495 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
3496 | struct btrfs_block_rsv *block_rsv, | |
3497 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
3498 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
3499 | struct btrfs_root *root, | |
3500 | struct extent_buffer *node, | |
3501 | struct extent_buffer *parent); | |
7841cb28 DS |
3502 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
3503 | { | |
3504 | /* | |
3505 | * Get synced with close_ctree() | |
3506 | */ | |
3507 | smp_mb(); | |
3508 | return fs_info->closing; | |
3509 | } | |
babbf170 MX |
3510 | |
3511 | /* | |
3512 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
3513 | * anything except sleeping. This function is used to check the status of | |
3514 | * the fs. | |
3515 | */ | |
3516 | static inline int btrfs_need_cleaner_sleep(struct btrfs_root *root) | |
3517 | { | |
3518 | return (root->fs_info->sb->s_flags & MS_RDONLY || | |
3519 | btrfs_fs_closing(root->fs_info)); | |
3520 | } | |
3521 | ||
6c41761f DS |
3522 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
3523 | { | |
837d5b6e | 3524 | kfree(fs_info->balance_ctl); |
6c41761f DS |
3525 | kfree(fs_info->delayed_root); |
3526 | kfree(fs_info->extent_root); | |
3527 | kfree(fs_info->tree_root); | |
3528 | kfree(fs_info->chunk_root); | |
3529 | kfree(fs_info->dev_root); | |
3530 | kfree(fs_info->csum_root); | |
bcef60f2 | 3531 | kfree(fs_info->quota_root); |
d8f98039 | 3532 | kfree(fs_info->uuid_root); |
6c41761f DS |
3533 | kfree(fs_info->super_copy); |
3534 | kfree(fs_info->super_for_commit); | |
3535 | kfree(fs_info); | |
3536 | } | |
7841cb28 | 3537 | |
097b8a7c JS |
3538 | /* tree mod log functions from ctree.c */ |
3539 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3540 | struct seq_list *elem); | |
3541 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3542 | struct seq_list *elem); | |
fc36ed7e | 3543 | u64 btrfs_tree_mod_seq_prev(u64 seq); |
5b6602e7 | 3544 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 3545 | |
dee26a9f | 3546 | /* root-item.c */ |
ea9e8b11 | 3547 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
3548 | struct btrfs_path *path, |
3549 | u64 root_id, u64 ref_id); | |
0660b5af CM |
3550 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
3551 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
3552 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
3553 | const char *name, int name_len); | |
3554 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
3555 | struct btrfs_root *tree_root, | |
3556 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 3557 | const char *name, int name_len); |
e089f05c CM |
3558 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3559 | struct btrfs_key *key); | |
3560 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
3561 | *root, struct btrfs_key *key, struct btrfs_root_item | |
3562 | *item); | |
b45a9d8b JM |
3563 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
3564 | struct btrfs_root *root, | |
3565 | struct btrfs_key *key, | |
3566 | struct btrfs_root_item *item); | |
cb517eab MX |
3567 | int btrfs_find_root(struct btrfs_root *root, struct btrfs_key *search_key, |
3568 | struct btrfs_path *path, struct btrfs_root_item *root_item, | |
3569 | struct btrfs_key *root_key); | |
76dda93c | 3570 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
3571 | void btrfs_set_root_node(struct btrfs_root_item *item, |
3572 | struct extent_buffer *node); | |
08fe4db1 | 3573 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
3574 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
3575 | struct btrfs_root *root); | |
08fe4db1 | 3576 | |
07b30a49 SB |
3577 | /* uuid-tree.c */ |
3578 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, | |
3579 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
3580 | u64 subid); | |
3581 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, | |
3582 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
3583 | u64 subid); | |
70f80175 SB |
3584 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
3585 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
3586 | u64)); | |
07b30a49 | 3587 | |
dee26a9f | 3588 | /* dir-item.c */ |
9c52057c CM |
3589 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
3590 | const char *name, int name_len); | |
d397712b CM |
3591 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
3592 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 3593 | int name_len, struct inode *dir, |
aec7477b | 3594 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3595 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3596 | struct btrfs_root *root, | |
3597 | struct btrfs_path *path, u64 dir, | |
3598 | const char *name, int name_len, | |
3599 | int mod); | |
3600 | struct btrfs_dir_item * | |
3601 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3602 | struct btrfs_root *root, | |
3603 | struct btrfs_path *path, u64 dir, | |
3604 | u64 objectid, const char *name, int name_len, | |
3605 | int mod); | |
4df27c4d YZ |
3606 | struct btrfs_dir_item * |
3607 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3608 | struct btrfs_path *path, u64 dirid, | |
3609 | const char *name, int name_len); | |
7e38180e CM |
3610 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3611 | struct btrfs_root *root, | |
3612 | struct btrfs_path *path, | |
3613 | struct btrfs_dir_item *di); | |
5103e947 | 3614 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3615 | struct btrfs_root *root, |
3616 | struct btrfs_path *path, u64 objectid, | |
3617 | const char *name, u16 name_len, | |
3618 | const void *data, u16 data_len); | |
5103e947 JB |
3619 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3620 | struct btrfs_root *root, | |
3621 | struct btrfs_path *path, u64 dir, | |
3622 | const char *name, u16 name_len, | |
3623 | int mod); | |
22a94d44 JB |
3624 | int verify_dir_item(struct btrfs_root *root, |
3625 | struct extent_buffer *leaf, | |
3626 | struct btrfs_dir_item *dir_item); | |
7b128766 JB |
3627 | |
3628 | /* orphan.c */ | |
3629 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3630 | struct btrfs_root *root, u64 offset); | |
3631 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3632 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3633 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3634 | |
dee26a9f | 3635 | /* inode-item.c */ |
3954401f CM |
3636 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3637 | struct btrfs_root *root, | |
3638 | const char *name, int name_len, | |
aec7477b | 3639 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3640 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3641 | struct btrfs_root *root, | |
3642 | const char *name, int name_len, | |
aec7477b | 3643 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
3644 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3645 | struct btrfs_root *root, | |
3646 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3647 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3648 | *root, struct btrfs_path *path, |
3649 | struct btrfs_key *location, int mod); | |
dee26a9f | 3650 | |
f186373f MF |
3651 | struct btrfs_inode_extref * |
3652 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3653 | struct btrfs_root *root, | |
3654 | struct btrfs_path *path, | |
3655 | const char *name, int name_len, | |
3656 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3657 | int cow); | |
3658 | ||
3659 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, | |
3660 | u64 ref_objectid, const char *name, | |
3661 | int name_len, | |
3662 | struct btrfs_inode_extref **extref_ret); | |
3663 | ||
dee26a9f | 3664 | /* file-item.c */ |
facc8a22 | 3665 | struct btrfs_dio_private; |
459931ec CM |
3666 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
3667 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 3668 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3669 | struct bio *bio, u32 *dst); |
4b46fce2 | 3670 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
facc8a22 MX |
3671 | struct btrfs_dio_private *dip, struct bio *bio, |
3672 | u64 logical_offset); | |
b18c6685 | 3673 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3674 | struct btrfs_root *root, |
3675 | u64 objectid, u64 pos, | |
3676 | u64 disk_offset, u64 disk_num_bytes, | |
3677 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3678 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3679 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3680 | struct btrfs_root *root, | |
3681 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3682 | u64 bytenr, int mod); |
065631f6 | 3683 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3684 | struct btrfs_root *root, |
e6dcd2dc | 3685 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 3686 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3687 | struct bio *bio, u64 file_start, int contig); |
a2de733c AJ |
3688 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3689 | struct list_head *list, int search_commit); | |
39279cc3 | 3690 | /* inode.c */ |
8ccf6f19 MX |
3691 | struct btrfs_delalloc_work { |
3692 | struct inode *inode; | |
3693 | int wait; | |
3694 | int delay_iput; | |
3695 | struct completion completion; | |
3696 | struct list_head list; | |
3697 | struct btrfs_work work; | |
3698 | }; | |
3699 | ||
3700 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, | |
3701 | int wait, int delay_iput); | |
3702 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); | |
3703 | ||
b2675157 JB |
3704 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
3705 | size_t pg_offset, u64 start, u64 len, | |
3706 | int create); | |
00361589 | 3707 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3708 | u64 *orig_start, u64 *orig_block_len, |
3709 | u64 *ram_bytes); | |
4881ee5a CM |
3710 | |
3711 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3712 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3713 | #define ClearPageChecked ClearPageFsMisc |
3714 | #define SetPageChecked SetPageFsMisc | |
3715 | #define PageChecked PageFsMisc | |
3716 | #endif | |
3717 | ||
b6973aa6 LZ |
3718 | /* This forces readahead on a given range of bytes in an inode */ |
3719 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3720 | struct file_ra_state *ra, struct file *file, | |
3721 | pgoff_t offset, unsigned long req_size) | |
3722 | { | |
3723 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3724 | } | |
3725 | ||
3de4586c CM |
3726 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
3727 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
3728 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3729 | struct btrfs_root *root, | |
3730 | struct inode *dir, struct inode *inode, | |
3731 | const char *name, int name_len); | |
3732 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
3733 | struct inode *parent_inode, struct inode *inode, | |
3734 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
3735 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3736 | struct btrfs_root *root, | |
3737 | struct inode *dir, u64 objectid, | |
3738 | const char *name, int name_len); | |
2aaa6655 JB |
3739 | int btrfs_truncate_page(struct inode *inode, loff_t from, loff_t len, |
3740 | int front); | |
e02119d5 CM |
3741 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3742 | struct btrfs_root *root, | |
3743 | struct inode *inode, u64 new_size, | |
3744 | u32 min_type); | |
3745 | ||
24bbcf04 | 3746 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
6c255e67 MX |
3747 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
3748 | int nr); | |
2ac55d41 JB |
3749 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
3750 | struct extent_state **cached_state); | |
d2fb3437 | 3751 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3752 | struct btrfs_root *new_root, |
3753 | struct btrfs_root *parent_root, | |
3754 | u64 new_dirid); | |
64a16701 DW |
3755 | int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, |
3756 | size_t size, struct bio *bio, | |
3757 | unsigned long bio_flags); | |
c2ec175c | 3758 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 3759 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3760 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3761 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3762 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3763 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3764 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3765 | int btrfs_init_cachep(void); |
3766 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3767 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3768 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3769 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 3770 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 3771 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
3772 | int create); |
3773 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
3774 | struct btrfs_root *root, | |
3775 | struct inode *inode); | |
be6aef60 JB |
3776 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3777 | struct btrfs_root *root, struct inode *inode); | |
5b21f2ed | 3778 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
66b4ffd1 | 3779 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3780 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3781 | struct btrfs_root *root); | |
a41ad394 | 3782 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3783 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
3784 | void btrfs_add_delayed_iput(struct inode *inode); |
3785 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
3786 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3787 | u64 start, u64 num_bytes, u64 min_size, | |
3788 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3789 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3790 | struct btrfs_trans_handle *trans, int mode, | |
3791 | u64 start, u64 num_bytes, u64 min_size, | |
3792 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 3793 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
3794 | |
3795 | /* ioctl.c */ | |
3796 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
6cbff00f CH |
3797 | void btrfs_update_iflags(struct inode *inode); |
3798 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
dd5f9615 | 3799 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3800 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3801 | struct btrfs_ioctl_defrag_range_args *range, | |
3802 | u64 newer_than, unsigned long max_pages); | |
5af3e8cc SB |
3803 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3804 | struct btrfs_ioctl_space_info *space); | |
35a3621b SB |
3805 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
3806 | struct btrfs_ioctl_balance_args *bargs); | |
3807 | ||
5af3e8cc | 3808 | |
39279cc3 | 3809 | /* file.c */ |
9247f317 MX |
3810 | int btrfs_auto_defrag_init(void); |
3811 | void btrfs_auto_defrag_exit(void); | |
4cb5300b CM |
3812 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
3813 | struct inode *inode); | |
3814 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
26176e7c | 3815 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3816 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
7014cdb4 JB |
3817 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
3818 | int skip_pinned); | |
828c0950 | 3819 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3820 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3821 | struct btrfs_root *root, struct inode *inode, | |
3822 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3823 | u64 *drop_end, int drop_cache, |
3824 | int replace_extent, | |
3825 | u32 extent_item_size, | |
3826 | int *key_inserted); | |
5dc562c5 JB |
3827 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3828 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3829 | u64 end, int drop_cache); |
d899e052 | 3830 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 3831 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 3832 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
3833 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, |
3834 | struct page **pages, size_t num_pages, | |
3835 | loff_t pos, size_t write_bytes, | |
3836 | struct extent_state **cached); | |
6bf13c0c | 3837 | |
6702ed49 CM |
3838 | /* tree-defrag.c */ |
3839 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3840 | struct btrfs_root *root); |
58176a96 JB |
3841 | |
3842 | /* sysfs.c */ | |
3843 | int btrfs_init_sysfs(void); | |
3844 | void btrfs_exit_sysfs(void); | |
5ac1d209 JM |
3845 | int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info); |
3846 | void btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info); | |
58176a96 | 3847 | |
5103e947 JB |
3848 | /* xattr.c */ |
3849 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3850 | |
edbd8d4e | 3851 | /* super.c */ |
edf24abe | 3852 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 3853 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 JP |
3854 | |
3855 | #ifdef CONFIG_PRINTK | |
3856 | __printf(2, 3) | |
c2cf52eb | 3857 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 JP |
3858 | #else |
3859 | static inline __printf(2, 3) | |
c2cf52eb | 3860 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
533574c6 JP |
3861 | { |
3862 | } | |
3863 | #endif | |
3864 | ||
c2cf52eb SK |
3865 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3866 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3867 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3868 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3869 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3870 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3871 | #define btrfs_err(fs_info, fmt, args...) \ | |
3872 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3873 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3874 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3875 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3876 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3877 | #define btrfs_info(fs_info, fmt, args...) \ | |
3878 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 FH |
3879 | |
3880 | #ifdef DEBUG | |
c2cf52eb SK |
3881 | #define btrfs_debug(fs_info, fmt, args...) \ |
3882 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3883 | #else |
3884 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3885 | no_printk(KERN_DEBUG fmt, ##args) | |
3886 | #endif | |
c2cf52eb | 3887 | |
2e17c7c6 JB |
3888 | #ifdef CONFIG_BTRFS_ASSERT |
3889 | ||
3890 | static inline void assfail(char *expr, char *file, int line) | |
3891 | { | |
efe120a0 | 3892 | pr_err("BTRFS: assertion failed: %s, file: %s, line: %d", |
2e17c7c6 JB |
3893 | expr, file, line); |
3894 | BUG(); | |
3895 | } | |
3896 | ||
3897 | #define ASSERT(expr) \ | |
3898 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3899 | #else | |
3900 | #define ASSERT(expr) ((void)0) | |
3901 | #endif | |
3902 | ||
3903 | #define btrfs_assert() | |
533574c6 | 3904 | __printf(5, 6) |
acce952b | 3905 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3906 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3907 | |
533574c6 | 3908 | |
49b25e05 JM |
3909 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
3910 | struct btrfs_root *root, const char *function, | |
3911 | unsigned int line, int errno); | |
3912 | ||
2b0ce2c2 MH |
3913 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3914 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3915 | ||
3916 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3917 | u64 flag) | |
3918 | { | |
3919 | struct btrfs_super_block *disk_super; | |
3920 | u64 features; | |
3921 | ||
3922 | disk_super = fs_info->super_copy; | |
3923 | features = btrfs_super_incompat_flags(disk_super); | |
3924 | if (!(features & flag)) { | |
ceda0864 MX |
3925 | spin_lock(&fs_info->super_lock); |
3926 | features = btrfs_super_incompat_flags(disk_super); | |
3927 | if (!(features & flag)) { | |
3928 | features |= flag; | |
3929 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3930 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3931 | flag); |
3932 | } | |
3933 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3934 | } |
3935 | } | |
3936 | ||
3173a18f JB |
3937 | #define btrfs_fs_incompat(fs_info, opt) \ |
3938 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3939 | ||
3940 | static inline int __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) | |
3941 | { | |
3942 | struct btrfs_super_block *disk_super; | |
3943 | disk_super = fs_info->super_copy; | |
3944 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3945 | } | |
3946 | ||
005d6427 DS |
3947 | /* |
3948 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3949 | * detected, that way the exact line number is reported. | |
3950 | */ | |
3951 | ||
49b25e05 JM |
3952 | #define btrfs_abort_transaction(trans, root, errno) \ |
3953 | do { \ | |
3954 | __btrfs_abort_transaction(trans, root, __func__, \ | |
3955 | __LINE__, errno); \ | |
3956 | } while (0) | |
acce952b | 3957 | |
3958 | #define btrfs_std_error(fs_info, errno) \ | |
3959 | do { \ | |
3960 | if ((errno)) \ | |
4da35113 JM |
3961 | __btrfs_std_error((fs_info), __func__, \ |
3962 | __LINE__, (errno), NULL); \ | |
3963 | } while (0) | |
3964 | ||
3965 | #define btrfs_error(fs_info, errno, fmt, args...) \ | |
3966 | do { \ | |
3967 | __btrfs_std_error((fs_info), __func__, __LINE__, \ | |
3968 | (errno), fmt, ##args); \ | |
acce952b | 3969 | } while (0) |
33268eaf | 3970 | |
533574c6 | 3971 | __printf(5, 6) |
8c342930 JM |
3972 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, |
3973 | unsigned int line, int errno, const char *fmt, ...); | |
3974 | ||
aa43a17c ES |
3975 | /* |
3976 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3977 | * will panic(). Otherwise we BUG() here. | |
3978 | */ | |
8c342930 JM |
3979 | #define btrfs_panic(fs_info, errno, fmt, args...) \ |
3980 | do { \ | |
aa43a17c ES |
3981 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ |
3982 | BUG(); \ | |
acce952b | 3983 | } while (0) |
33268eaf JB |
3984 | |
3985 | /* acl.c */ | |
0eda294d | 3986 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3987 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3988 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3989 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3990 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3991 | #else |
ed8f3737 | 3992 | #define btrfs_get_acl NULL |
996a710d | 3993 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3994 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3995 | struct inode *inode, struct inode *dir) | |
3996 | { | |
3997 | return 0; | |
3998 | } | |
9b89d95a | 3999 | #endif |
0f9dd46c | 4000 | |
5d4f98a2 YZ |
4001 | /* relocation.c */ |
4002 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
4003 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
4004 | struct btrfs_root *root); | |
4005 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
4006 | struct btrfs_root *root); | |
4007 | int btrfs_recover_relocation(struct btrfs_root *root); | |
4008 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
4009 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
4010 | struct btrfs_root *root, struct extent_buffer *buf, | |
4011 | struct extent_buffer *cow); | |
3fd0a558 YZ |
4012 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, |
4013 | struct btrfs_pending_snapshot *pending, | |
4014 | u64 *bytes_to_reserve); | |
49b25e05 | 4015 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 4016 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
4017 | |
4018 | /* scrub.c */ | |
aa1b8cd4 SB |
4019 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
4020 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 4021 | int readonly, int is_dev_replace); |
143bede5 | 4022 | void btrfs_scrub_pause(struct btrfs_root *root); |
143bede5 | 4023 | void btrfs_scrub_continue(struct btrfs_root *root); |
aa1b8cd4 SB |
4024 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
4025 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
4026 | struct btrfs_device *dev); | |
a2de733c AJ |
4027 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, |
4028 | struct btrfs_scrub_progress *progress); | |
c404e0dc MX |
4029 | |
4030 | /* dev-replace.c */ | |
4031 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
4032 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4033 | void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info); | |
a2de733c | 4034 | |
7414a03f AJ |
4035 | /* reada.c */ |
4036 | struct reada_control { | |
4037 | struct btrfs_root *root; /* tree to prefetch */ | |
4038 | struct btrfs_key key_start; | |
4039 | struct btrfs_key key_end; /* exclusive */ | |
4040 | atomic_t elems; | |
4041 | struct kref refcnt; | |
4042 | wait_queue_head_t wait; | |
4043 | }; | |
4044 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
4045 | struct btrfs_key *start, struct btrfs_key *end); | |
4046 | int btrfs_reada_wait(void *handle); | |
4047 | void btrfs_reada_detach(void *handle); | |
4048 | int btree_readahead_hook(struct btrfs_root *root, struct extent_buffer *eb, | |
4049 | u64 start, int err); | |
4050 | ||
bed92eae AJ |
4051 | /* qgroup.c */ |
4052 | struct qgroup_update { | |
64947ec0 | 4053 | struct list_head list; |
bed92eae AJ |
4054 | struct btrfs_delayed_ref_node *node; |
4055 | struct btrfs_delayed_extent_op *extent_op; | |
64947ec0 JS |
4056 | }; |
4057 | ||
bed92eae AJ |
4058 | int btrfs_quota_enable(struct btrfs_trans_handle *trans, |
4059 | struct btrfs_fs_info *fs_info); | |
4060 | int btrfs_quota_disable(struct btrfs_trans_handle *trans, | |
4061 | struct btrfs_fs_info *fs_info); | |
2f232036 | 4062 | int btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info); |
b382a324 | 4063 | void btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info); |
57254b6e | 4064 | int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
4065 | int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, |
4066 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); | |
4067 | int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans, | |
4068 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); | |
4069 | int btrfs_create_qgroup(struct btrfs_trans_handle *trans, | |
4070 | struct btrfs_fs_info *fs_info, u64 qgroupid, | |
4071 | char *name); | |
4072 | int btrfs_remove_qgroup(struct btrfs_trans_handle *trans, | |
4073 | struct btrfs_fs_info *fs_info, u64 qgroupid); | |
4074 | int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, | |
4075 | struct btrfs_fs_info *fs_info, u64 qgroupid, | |
4076 | struct btrfs_qgroup_limit *limit); | |
4077 | int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info); | |
4078 | void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info); | |
4079 | struct btrfs_delayed_extent_op; | |
4080 | int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans, | |
4081 | struct btrfs_delayed_ref_node *node, | |
4082 | struct btrfs_delayed_extent_op *extent_op); | |
4083 | int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, | |
4084 | struct btrfs_fs_info *fs_info, | |
4085 | struct btrfs_delayed_ref_node *node, | |
4086 | struct btrfs_delayed_extent_op *extent_op); | |
4087 | int btrfs_run_qgroups(struct btrfs_trans_handle *trans, | |
4088 | struct btrfs_fs_info *fs_info); | |
4089 | int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, | |
4090 | struct btrfs_fs_info *fs_info, u64 srcid, u64 objectid, | |
4091 | struct btrfs_qgroup_inherit *inherit); | |
4092 | int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes); | |
4093 | void btrfs_qgroup_free(struct btrfs_root *root, u64 num_bytes); | |
4094 | ||
4095 | void assert_qgroups_uptodate(struct btrfs_trans_handle *trans); | |
bd989ba3 | 4096 | |
95a06077 JS |
4097 | static inline int is_fstree(u64 rootid) |
4098 | { | |
4099 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
4100 | (s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID) | |
4101 | return 1; | |
4102 | return 0; | |
4103 | } | |
210549eb DS |
4104 | |
4105 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
4106 | { | |
4107 | return signal_pending(current); | |
4108 | } | |
4109 | ||
aaedb55b JB |
4110 | /* Sanity test specific functions */ |
4111 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
4112 | void btrfs_test_destroy_inode(struct inode *inode); | |
4113 | #endif | |
210549eb | 4114 | |
eb60ceac | 4115 | #endif |