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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> |
58176a96 | 26 | #include <linux/completion.h> |
04160088 | 27 | #include <linux/backing-dev.h> |
e6dcd2dc | 28 | #include <linux/wait.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
f8b18087 | 30 | #include <linux/kobject.h> |
1abe9b8a | 31 | #include <trace/events/btrfs.h> |
479965d6 | 32 | #include <asm/kmap_types.h> |
3b16a4e3 | 33 | #include <linux/pagemap.h> |
55e301fd | 34 | #include <linux/btrfs.h> |
d1310b2e | 35 | #include "extent_io.h" |
5f39d397 | 36 | #include "extent_map.h" |
8b712842 | 37 | #include "async-thread.h" |
e20d96d6 | 38 | |
e089f05c | 39 | struct btrfs_trans_handle; |
79154b1b | 40 | struct btrfs_transaction; |
a22285a6 | 41 | struct btrfs_pending_snapshot; |
35b7e476 CM |
42 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
43 | extern struct kmem_cache *btrfs_transaction_cachep; | |
44 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 45 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 46 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 47 | struct btrfs_ordered_sum; |
e089f05c | 48 | |
cdb4c574 | 49 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 50 | |
72d7aefc | 51 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 52 | |
4008c04a | 53 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 54 | |
5d4f98a2 YZ |
55 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
56 | ||
5a3f23d5 CM |
57 | /* |
58 | * files bigger than this get some pre-flushing when they are added | |
59 | * to the ordered operations list. That way we limit the total | |
60 | * work done by the commit | |
61 | */ | |
62 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) | |
63 | ||
0b86a832 | 64 | /* holds pointers to all of the tree roots */ |
6407bf6d | 65 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
66 | |
67 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 68 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 69 | |
0b86a832 CM |
70 | /* |
71 | * chunk tree stores translations from logical -> physical block numbering | |
72 | * the super block points to the chunk tree | |
73 | */ | |
e085def2 | 74 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
75 | |
76 | /* | |
77 | * stores information about which areas of a given device are in use. | |
78 | * one per device. The tree of tree roots points to the device tree | |
79 | */ | |
e085def2 CM |
80 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
81 | ||
82 | /* one per subvolume, storing files and directories */ | |
83 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
84 | ||
85 | /* directory objectid inside the root tree */ | |
86 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 87 | |
d20f7043 CM |
88 | /* holds checksums of all the data extents */ |
89 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
90 | ||
0940ebf6 ID |
91 | /* for storing balance parameters in the root tree */ |
92 | #define BTRFS_BALANCE_OBJECTID -4ULL | |
93 | ||
630dc772 AJ |
94 | /* holds quota configuration and tracking */ |
95 | #define BTRFS_QUOTA_TREE_OBJECTID 8ULL | |
96 | ||
7b128766 JB |
97 | /* orhpan objectid for tracking unlinked/truncated files */ |
98 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
99 | ||
e02119d5 CM |
100 | /* does write ahead logging to speed up fsyncs */ |
101 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
102 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
103 | ||
e4657689 ZY |
104 | /* for space balancing */ |
105 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
106 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
107 | ||
d20f7043 CM |
108 | /* |
109 | * extent checksums all have this objectid | |
110 | * this allows them to share the logging tree | |
111 | * for fsyncs | |
112 | */ | |
113 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
114 | ||
0af3d00b JB |
115 | /* For storing free space cache */ |
116 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL | |
117 | ||
82d5902d | 118 | /* |
527a1361 | 119 | * The inode number assigned to the special inode for storing |
82d5902d LZ |
120 | * free ino cache |
121 | */ | |
122 | #define BTRFS_FREE_INO_OBJECTID -12ULL | |
123 | ||
31840ae1 ZY |
124 | /* dummy objectid represents multiple objectids */ |
125 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
126 | ||
0b86a832 | 127 | /* |
6527cdbe | 128 | * All files have objectids in this range. |
0b86a832 | 129 | */ |
f6dbff55 | 130 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 131 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 132 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 133 | |
0b86a832 CM |
134 | |
135 | /* | |
136 | * the device items go into the chunk tree. The key is in the form | |
137 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
138 | */ | |
139 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
140 | ||
4df27c4d YZ |
141 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
142 | ||
143 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 | |
144 | ||
e93c89c1 SB |
145 | #define BTRFS_DEV_REPLACE_DEVID 0 |
146 | ||
727011e0 CM |
147 | /* |
148 | * the max metadata block size. This limit is somewhat artificial, | |
149 | * but the memmove costs go through the roof for larger blocks. | |
150 | */ | |
151 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
152 | ||
e20d96d6 CM |
153 | /* |
154 | * we can actually store much bigger names, but lets not confuse the rest | |
155 | * of linux | |
156 | */ | |
157 | #define BTRFS_NAME_LEN 255 | |
158 | ||
f186373f MF |
159 | /* |
160 | * Theoretical limit is larger, but we keep this down to a sane | |
161 | * value. That should limit greatly the possibility of collisions on | |
162 | * inode ref items. | |
163 | */ | |
164 | #define BTRFS_LINK_MAX 65535U | |
165 | ||
f254e52c CM |
166 | /* 32 bytes in various csum fields */ |
167 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
168 | |
169 | /* csum types */ | |
170 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
171 | ||
172 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
173 | ||
509659cd | 174 | /* four bytes for CRC32 */ |
3954401f | 175 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 176 | |
29a8d9a0 SB |
177 | /* spefic to btrfs_map_block(), therefore not in include/linux/blk_types.h */ |
178 | #define REQ_GET_READ_MIRRORS (1 << 30) | |
179 | ||
fabb5681 CM |
180 | #define BTRFS_FT_UNKNOWN 0 |
181 | #define BTRFS_FT_REG_FILE 1 | |
182 | #define BTRFS_FT_DIR 2 | |
183 | #define BTRFS_FT_CHRDEV 3 | |
184 | #define BTRFS_FT_BLKDEV 4 | |
185 | #define BTRFS_FT_FIFO 5 | |
186 | #define BTRFS_FT_SOCK 6 | |
187 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
188 | #define BTRFS_FT_XATTR 8 |
189 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 190 | |
3d136a11 SB |
191 | /* ioprio of readahead is set to idle */ |
192 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
193 | ||
e2d84521 MX |
194 | #define BTRFS_DIRTY_METADATA_THRESH (32 * 1024 * 1024) |
195 | ||
fec577fb | 196 | /* |
d4a78947 WF |
197 | * The key defines the order in the tree, and so it also defines (optimal) |
198 | * block layout. | |
199 | * | |
200 | * objectid corresponds to the inode number. | |
201 | * | |
202 | * type tells us things about the object, and is a kind of stream selector. | |
203 | * so for a given inode, keys with type of 1 might refer to the inode data, | |
204 | * type of 2 may point to file data in the btree and type == 3 may point to | |
205 | * extents. | |
fec577fb CM |
206 | * |
207 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
208 | * |
209 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
210 | * in cpu native order. Otherwise they are identical and their sizes | |
211 | * should be the same (ie both packed) | |
fec577fb | 212 | */ |
e2fa7227 CM |
213 | struct btrfs_disk_key { |
214 | __le64 objectid; | |
5f39d397 | 215 | u8 type; |
70b2befd | 216 | __le64 offset; |
e2fa7227 CM |
217 | } __attribute__ ((__packed__)); |
218 | ||
219 | struct btrfs_key { | |
eb60ceac | 220 | u64 objectid; |
5f39d397 | 221 | u8 type; |
70b2befd | 222 | u64 offset; |
eb60ceac CM |
223 | } __attribute__ ((__packed__)); |
224 | ||
0b86a832 CM |
225 | struct btrfs_mapping_tree { |
226 | struct extent_map_tree map_tree; | |
227 | }; | |
228 | ||
0b86a832 CM |
229 | struct btrfs_dev_item { |
230 | /* the internal btrfs device id */ | |
231 | __le64 devid; | |
232 | ||
233 | /* size of the device */ | |
234 | __le64 total_bytes; | |
235 | ||
236 | /* bytes used */ | |
237 | __le64 bytes_used; | |
238 | ||
239 | /* optimal io alignment for this device */ | |
240 | __le32 io_align; | |
241 | ||
242 | /* optimal io width for this device */ | |
243 | __le32 io_width; | |
244 | ||
245 | /* minimal io size for this device */ | |
246 | __le32 sector_size; | |
247 | ||
0b86a832 CM |
248 | /* type and info about this device */ |
249 | __le64 type; | |
250 | ||
2b82032c YZ |
251 | /* expected generation for this device */ |
252 | __le64 generation; | |
253 | ||
c3027eb5 CM |
254 | /* |
255 | * starting byte of this partition on the device, | |
d4a78947 | 256 | * to allow for stripe alignment in the future |
c3027eb5 CM |
257 | */ |
258 | __le64 start_offset; | |
259 | ||
e17cade2 CM |
260 | /* grouping information for allocation decisions */ |
261 | __le32 dev_group; | |
262 | ||
263 | /* seek speed 0-100 where 100 is fastest */ | |
264 | u8 seek_speed; | |
265 | ||
266 | /* bandwidth 0-100 where 100 is fastest */ | |
267 | u8 bandwidth; | |
268 | ||
0d81ba5d | 269 | /* btrfs generated uuid for this device */ |
e17cade2 | 270 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
271 | |
272 | /* uuid of FS who owns this device */ | |
273 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
274 | } __attribute__ ((__packed__)); |
275 | ||
276 | struct btrfs_stripe { | |
277 | __le64 devid; | |
278 | __le64 offset; | |
e17cade2 | 279 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
280 | } __attribute__ ((__packed__)); |
281 | ||
282 | struct btrfs_chunk { | |
e17cade2 CM |
283 | /* size of this chunk in bytes */ |
284 | __le64 length; | |
285 | ||
286 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 287 | __le64 owner; |
e17cade2 | 288 | |
0b86a832 CM |
289 | __le64 stripe_len; |
290 | __le64 type; | |
291 | ||
292 | /* optimal io alignment for this chunk */ | |
293 | __le32 io_align; | |
294 | ||
295 | /* optimal io width for this chunk */ | |
296 | __le32 io_width; | |
297 | ||
298 | /* minimal io size for this chunk */ | |
299 | __le32 sector_size; | |
300 | ||
301 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
302 | * item in the btree | |
303 | */ | |
304 | __le16 num_stripes; | |
321aecc6 CM |
305 | |
306 | /* sub stripes only matter for raid10 */ | |
307 | __le16 sub_stripes; | |
0b86a832 CM |
308 | struct btrfs_stripe stripe; |
309 | /* additional stripes go here */ | |
310 | } __attribute__ ((__packed__)); | |
311 | ||
0af3d00b JB |
312 | #define BTRFS_FREE_SPACE_EXTENT 1 |
313 | #define BTRFS_FREE_SPACE_BITMAP 2 | |
314 | ||
315 | struct btrfs_free_space_entry { | |
316 | __le64 offset; | |
317 | __le64 bytes; | |
318 | u8 type; | |
319 | } __attribute__ ((__packed__)); | |
320 | ||
321 | struct btrfs_free_space_header { | |
322 | struct btrfs_disk_key location; | |
323 | __le64 generation; | |
324 | __le64 num_entries; | |
325 | __le64 num_bitmaps; | |
326 | } __attribute__ ((__packed__)); | |
327 | ||
0b86a832 CM |
328 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
329 | { | |
330 | BUG_ON(num_stripes == 0); | |
331 | return sizeof(struct btrfs_chunk) + | |
332 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
333 | } | |
334 | ||
5d4f98a2 YZ |
335 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
336 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) | |
acce952b | 337 | |
338 | /* | |
339 | * File system states | |
340 | */ | |
87533c47 | 341 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 342 | #define BTRFS_FS_STATE_REMOUNTING 1 |
acce952b | 343 | |
87533c47 | 344 | /* Super block flags */ |
acce952b | 345 | /* Errors detected */ |
346 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) | |
347 | ||
5d4f98a2 YZ |
348 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
349 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) | |
350 | ||
351 | #define BTRFS_BACKREF_REV_MAX 256 | |
352 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
353 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
354 | BTRFS_BACKREF_REV_SHIFT) | |
355 | ||
356 | #define BTRFS_OLD_BACKREF_REV 0 | |
357 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 358 | |
fec577fb CM |
359 | /* |
360 | * every tree block (leaf or node) starts with this header. | |
361 | */ | |
bb492bb0 | 362 | struct btrfs_header { |
e17cade2 | 363 | /* these first four must match the super block */ |
f254e52c | 364 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 365 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 366 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 367 | __le64 flags; |
e17cade2 CM |
368 | |
369 | /* allowed to be different from the super from here on down */ | |
370 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 371 | __le64 generation; |
4d775673 | 372 | __le64 owner; |
5f39d397 | 373 | __le32 nritems; |
9a6f11ed | 374 | u8 level; |
eb60ceac CM |
375 | } __attribute__ ((__packed__)); |
376 | ||
5f39d397 | 377 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
378 | sizeof(struct btrfs_header)) / \ |
379 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 380 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 381 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
382 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
383 | sizeof(struct btrfs_item) - \ | |
384 | sizeof(struct btrfs_file_extent_item)) | |
f34f57a3 YZ |
385 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
386 | sizeof(struct btrfs_item) -\ | |
387 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 388 | |
0b86a832 CM |
389 | |
390 | /* | |
391 | * this is a very generous portion of the super block, giving us | |
392 | * room to translate 14 chunks with 3 stripes each. | |
393 | */ | |
394 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 395 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 396 | |
af31f5e5 CM |
397 | /* |
398 | * just in case we somehow lose the roots and are not able to mount, | |
399 | * we store an array of the roots from previous transactions | |
400 | * in the super. | |
401 | */ | |
402 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
403 | struct btrfs_root_backup { | |
404 | __le64 tree_root; | |
405 | __le64 tree_root_gen; | |
406 | ||
407 | __le64 chunk_root; | |
408 | __le64 chunk_root_gen; | |
409 | ||
410 | __le64 extent_root; | |
411 | __le64 extent_root_gen; | |
412 | ||
413 | __le64 fs_root; | |
414 | __le64 fs_root_gen; | |
415 | ||
416 | __le64 dev_root; | |
417 | __le64 dev_root_gen; | |
418 | ||
419 | __le64 csum_root; | |
420 | __le64 csum_root_gen; | |
421 | ||
422 | __le64 total_bytes; | |
423 | __le64 bytes_used; | |
424 | __le64 num_devices; | |
425 | /* future */ | |
d1423248 | 426 | __le64 unused_64[4]; |
af31f5e5 CM |
427 | |
428 | u8 tree_root_level; | |
429 | u8 chunk_root_level; | |
430 | u8 extent_root_level; | |
431 | u8 fs_root_level; | |
432 | u8 dev_root_level; | |
433 | u8 csum_root_level; | |
434 | /* future and to align */ | |
435 | u8 unused_8[10]; | |
436 | } __attribute__ ((__packed__)); | |
437 | ||
fec577fb CM |
438 | /* |
439 | * the super block basically lists the main trees of the FS | |
440 | * it currently lacks any block count etc etc | |
441 | */ | |
234b63a0 | 442 | struct btrfs_super_block { |
f254e52c | 443 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 444 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 445 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 446 | __le64 bytenr; /* this block number */ |
63b10fc4 | 447 | __le64 flags; |
e17cade2 CM |
448 | |
449 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 450 | __le64 magic; |
3768f368 CM |
451 | __le64 generation; |
452 | __le64 root; | |
0b86a832 | 453 | __le64 chunk_root; |
e02119d5 | 454 | __le64 log_root; |
c3027eb5 CM |
455 | |
456 | /* this will help find the new super based on the log root */ | |
457 | __le64 log_root_transid; | |
db94535d CM |
458 | __le64 total_bytes; |
459 | __le64 bytes_used; | |
2e635a27 | 460 | __le64 root_dir_objectid; |
8a4b83cc | 461 | __le64 num_devices; |
5f39d397 CM |
462 | __le32 sectorsize; |
463 | __le32 nodesize; | |
464 | __le32 leafsize; | |
87ee04eb | 465 | __le32 stripesize; |
0b86a832 | 466 | __le32 sys_chunk_array_size; |
84234f3a | 467 | __le64 chunk_root_generation; |
f2b636e8 JB |
468 | __le64 compat_flags; |
469 | __le64 compat_ro_flags; | |
470 | __le64 incompat_flags; | |
607d432d | 471 | __le16 csum_type; |
db94535d | 472 | u8 root_level; |
0b86a832 | 473 | u8 chunk_root_level; |
e02119d5 | 474 | u8 log_root_level; |
0d81ba5d | 475 | struct btrfs_dev_item dev_item; |
c3027eb5 | 476 | |
7ae9c09d | 477 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 478 | |
0af3d00b JB |
479 | __le64 cache_generation; |
480 | ||
c3027eb5 | 481 | /* future expansion */ |
0af3d00b | 482 | __le64 reserved[31]; |
0b86a832 | 483 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 484 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
485 | } __attribute__ ((__packed__)); |
486 | ||
f2b636e8 JB |
487 | /* |
488 | * Compat flags that we support. If any incompat flags are set other than the | |
489 | * ones specified below then we will fail to mount | |
490 | */ | |
5d4f98a2 | 491 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
0af3d00b | 492 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
67377734 | 493 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
a6fa6fae | 494 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
727011e0 CM |
495 | /* |
496 | * some patches floated around with a second compression method | |
497 | * lets save that incompat here for when they do get in | |
498 | * Note we don't actually support it, we're just reserving the | |
499 | * number | |
500 | */ | |
501 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) | |
502 | ||
503 | /* | |
504 | * older kernels tried to do bigger metadata blocks, but the | |
505 | * code was pretty buggy. Lets not let them try anymore. | |
506 | */ | |
507 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) | |
5d4f98a2 | 508 | |
f186373f | 509 | #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) |
53b381b3 | 510 | #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) |
f186373f | 511 | |
5d4f98a2 YZ |
512 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
513 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL | |
0af3d00b JB |
514 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
515 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 516 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 517 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 518 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 519 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
53b381b3 | 520 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
f186373f | 521 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) |
f2b636e8 | 522 | |
fec577fb | 523 | /* |
62e2749e | 524 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
525 | * the item in the leaf (relative to the start of the data area) |
526 | */ | |
0783fcfc | 527 | struct btrfs_item { |
e2fa7227 | 528 | struct btrfs_disk_key key; |
123abc88 | 529 | __le32 offset; |
5f39d397 | 530 | __le32 size; |
eb60ceac CM |
531 | } __attribute__ ((__packed__)); |
532 | ||
fec577fb CM |
533 | /* |
534 | * leaves have an item area and a data area: | |
535 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
536 | * | |
537 | * The data is separate from the items to get the keys closer together | |
538 | * during searches. | |
539 | */ | |
234b63a0 | 540 | struct btrfs_leaf { |
bb492bb0 | 541 | struct btrfs_header header; |
123abc88 | 542 | struct btrfs_item items[]; |
eb60ceac CM |
543 | } __attribute__ ((__packed__)); |
544 | ||
fec577fb CM |
545 | /* |
546 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
547 | * other blocks | |
548 | */ | |
123abc88 CM |
549 | struct btrfs_key_ptr { |
550 | struct btrfs_disk_key key; | |
551 | __le64 blockptr; | |
74493f7a | 552 | __le64 generation; |
123abc88 CM |
553 | } __attribute__ ((__packed__)); |
554 | ||
234b63a0 | 555 | struct btrfs_node { |
bb492bb0 | 556 | struct btrfs_header header; |
123abc88 | 557 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
558 | } __attribute__ ((__packed__)); |
559 | ||
fec577fb | 560 | /* |
234b63a0 CM |
561 | * btrfs_paths remember the path taken from the root down to the leaf. |
562 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
563 | * to any other levels that are present. |
564 | * | |
565 | * The slots array records the index of the item or block pointer | |
566 | * used while walking the tree. | |
567 | */ | |
234b63a0 | 568 | struct btrfs_path { |
5f39d397 | 569 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 570 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
571 | /* if there is real range locking, this locks field will change */ |
572 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 573 | int reada; |
925baedd | 574 | /* keep some upper locks as we walk down */ |
6702ed49 | 575 | int lowest_level; |
459931ec CM |
576 | |
577 | /* | |
578 | * set by btrfs_split_item, tells search_slot to keep all locks | |
579 | * and to force calls to keep space in the nodes | |
580 | */ | |
b9473439 CM |
581 | unsigned int search_for_split:1; |
582 | unsigned int keep_locks:1; | |
583 | unsigned int skip_locking:1; | |
584 | unsigned int leave_spinning:1; | |
5d4f98a2 | 585 | unsigned int search_commit_root:1; |
d6393786 | 586 | unsigned int really_keep_locks:1; |
eb60ceac | 587 | }; |
5de08d7d | 588 | |
62e2749e CM |
589 | /* |
590 | * items in the extent btree are used to record the objectid of the | |
591 | * owner of the block and the number of references | |
592 | */ | |
5d4f98a2 | 593 | |
62e2749e | 594 | struct btrfs_extent_item { |
5d4f98a2 YZ |
595 | __le64 refs; |
596 | __le64 generation; | |
597 | __le64 flags; | |
598 | } __attribute__ ((__packed__)); | |
599 | ||
600 | struct btrfs_extent_item_v0 { | |
62e2749e | 601 | __le32 refs; |
74493f7a CM |
602 | } __attribute__ ((__packed__)); |
603 | ||
5d4f98a2 YZ |
604 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
605 | sizeof(struct btrfs_item)) | |
606 | ||
607 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) | |
608 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) | |
609 | ||
610 | /* following flags only apply to tree blocks */ | |
611 | ||
612 | /* use full backrefs for extent pointers in the block */ | |
613 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) | |
614 | ||
a2de733c AJ |
615 | /* |
616 | * this flag is only used internally by scrub and may be changed at any time | |
617 | * it is only declared here to avoid collisions | |
618 | */ | |
619 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) | |
620 | ||
5d4f98a2 YZ |
621 | struct btrfs_tree_block_info { |
622 | struct btrfs_disk_key key; | |
623 | u8 level; | |
624 | } __attribute__ ((__packed__)); | |
625 | ||
626 | struct btrfs_extent_data_ref { | |
627 | __le64 root; | |
628 | __le64 objectid; | |
629 | __le64 offset; | |
630 | __le32 count; | |
631 | } __attribute__ ((__packed__)); | |
632 | ||
633 | struct btrfs_shared_data_ref { | |
634 | __le32 count; | |
635 | } __attribute__ ((__packed__)); | |
636 | ||
637 | struct btrfs_extent_inline_ref { | |
638 | u8 type; | |
1bec1aed | 639 | __le64 offset; |
5d4f98a2 YZ |
640 | } __attribute__ ((__packed__)); |
641 | ||
642 | /* old style backrefs item */ | |
643 | struct btrfs_extent_ref_v0 { | |
74493f7a CM |
644 | __le64 root; |
645 | __le64 generation; | |
646 | __le64 objectid; | |
5d4f98a2 | 647 | __le32 count; |
62e2749e CM |
648 | } __attribute__ ((__packed__)); |
649 | ||
5d4f98a2 | 650 | |
0b86a832 CM |
651 | /* dev extents record free space on individual devices. The owner |
652 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 653 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
654 | */ |
655 | struct btrfs_dev_extent { | |
e17cade2 CM |
656 | __le64 chunk_tree; |
657 | __le64 chunk_objectid; | |
658 | __le64 chunk_offset; | |
0b86a832 | 659 | __le64 length; |
e17cade2 | 660 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
661 | } __attribute__ ((__packed__)); |
662 | ||
3954401f | 663 | struct btrfs_inode_ref { |
aec7477b | 664 | __le64 index; |
3954401f CM |
665 | __le16 name_len; |
666 | /* name goes here */ | |
667 | } __attribute__ ((__packed__)); | |
668 | ||
f186373f MF |
669 | struct btrfs_inode_extref { |
670 | __le64 parent_objectid; | |
671 | __le64 index; | |
672 | __le16 name_len; | |
673 | __u8 name[0]; | |
674 | /* name goes here */ | |
675 | } __attribute__ ((__packed__)); | |
676 | ||
0b86a832 | 677 | struct btrfs_timespec { |
f254e52c | 678 | __le64 sec; |
1e1d2701 CM |
679 | __le32 nsec; |
680 | } __attribute__ ((__packed__)); | |
681 | ||
95029d7d | 682 | enum btrfs_compression_type { |
261507a0 LZ |
683 | BTRFS_COMPRESS_NONE = 0, |
684 | BTRFS_COMPRESS_ZLIB = 1, | |
a6fa6fae LZ |
685 | BTRFS_COMPRESS_LZO = 2, |
686 | BTRFS_COMPRESS_TYPES = 2, | |
687 | BTRFS_COMPRESS_LAST = 3, | |
95029d7d | 688 | }; |
c8b97818 | 689 | |
1e1d2701 | 690 | struct btrfs_inode_item { |
e02119d5 | 691 | /* nfs style generation number */ |
1e1d2701 | 692 | __le64 generation; |
e02119d5 CM |
693 | /* transid that last touched this inode */ |
694 | __le64 transid; | |
1e1d2701 | 695 | __le64 size; |
a76a3cd4 | 696 | __le64 nbytes; |
31f3c99b | 697 | __le64 block_group; |
1e1d2701 CM |
698 | __le32 nlink; |
699 | __le32 uid; | |
700 | __le32 gid; | |
701 | __le32 mode; | |
0b86a832 | 702 | __le64 rdev; |
f2b636e8 | 703 | __le64 flags; |
c8b97818 | 704 | |
c3027eb5 CM |
705 | /* modification sequence number for NFS */ |
706 | __le64 sequence; | |
707 | ||
708 | /* | |
709 | * a little future expansion, for more than this we can | |
710 | * just grow the inode item and version it | |
711 | */ | |
712 | __le64 reserved[4]; | |
0b86a832 CM |
713 | struct btrfs_timespec atime; |
714 | struct btrfs_timespec ctime; | |
715 | struct btrfs_timespec mtime; | |
716 | struct btrfs_timespec otime; | |
1e1d2701 CM |
717 | } __attribute__ ((__packed__)); |
718 | ||
e02119d5 CM |
719 | struct btrfs_dir_log_item { |
720 | __le64 end; | |
721 | } __attribute__ ((__packed__)); | |
722 | ||
62e2749e | 723 | struct btrfs_dir_item { |
d6e4a428 | 724 | struct btrfs_disk_key location; |
e02119d5 | 725 | __le64 transid; |
5103e947 | 726 | __le16 data_len; |
a8a2ee0c | 727 | __le16 name_len; |
62e2749e CM |
728 | u8 type; |
729 | } __attribute__ ((__packed__)); | |
730 | ||
b83cc969 LZ |
731 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
732 | ||
62e2749e | 733 | struct btrfs_root_item { |
d6e4a428 | 734 | struct btrfs_inode_item inode; |
84234f3a | 735 | __le64 generation; |
d6e4a428 | 736 | __le64 root_dirid; |
db94535d CM |
737 | __le64 bytenr; |
738 | __le64 byte_limit; | |
739 | __le64 bytes_used; | |
80ff3856 | 740 | __le64 last_snapshot; |
f2b636e8 | 741 | __le64 flags; |
62e2749e | 742 | __le32 refs; |
5eda7b5e CM |
743 | struct btrfs_disk_key drop_progress; |
744 | u8 drop_level; | |
db94535d | 745 | u8 level; |
8ea05e3a AB |
746 | |
747 | /* | |
748 | * The following fields appear after subvol_uuids+subvol_times | |
749 | * were introduced. | |
750 | */ | |
751 | ||
752 | /* | |
753 | * This generation number is used to test if the new fields are valid | |
754 | * and up to date while reading the root item. Everytime the root item | |
755 | * is written out, the "generation" field is copied into this field. If | |
756 | * anyone ever mounted the fs with an older kernel, we will have | |
757 | * mismatching generation values here and thus must invalidate the | |
758 | * new fields. See btrfs_update_root and btrfs_find_last_root for | |
759 | * details. | |
760 | * the offset of generation_v2 is also used as the start for the memset | |
761 | * when invalidating the fields. | |
762 | */ | |
763 | __le64 generation_v2; | |
764 | u8 uuid[BTRFS_UUID_SIZE]; | |
765 | u8 parent_uuid[BTRFS_UUID_SIZE]; | |
766 | u8 received_uuid[BTRFS_UUID_SIZE]; | |
767 | __le64 ctransid; /* updated when an inode changes */ | |
768 | __le64 otransid; /* trans when created */ | |
769 | __le64 stransid; /* trans when sent. non-zero for received subvol */ | |
770 | __le64 rtransid; /* trans when received. non-zero for received subvol */ | |
771 | struct btrfs_timespec ctime; | |
772 | struct btrfs_timespec otime; | |
773 | struct btrfs_timespec stime; | |
774 | struct btrfs_timespec rtime; | |
775 | __le64 reserved[8]; /* for future */ | |
9f5fae2f | 776 | } __attribute__ ((__packed__)); |
62e2749e | 777 | |
0660b5af CM |
778 | /* |
779 | * this is used for both forward and backward root refs | |
780 | */ | |
781 | struct btrfs_root_ref { | |
782 | __le64 dirid; | |
783 | __le64 sequence; | |
784 | __le16 name_len; | |
785 | } __attribute__ ((__packed__)); | |
786 | ||
0940ebf6 ID |
787 | struct btrfs_disk_balance_args { |
788 | /* | |
789 | * profiles to operate on, single is denoted by | |
790 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
791 | */ | |
792 | __le64 profiles; | |
793 | ||
794 | /* usage filter */ | |
795 | __le64 usage; | |
796 | ||
797 | /* devid filter */ | |
798 | __le64 devid; | |
799 | ||
800 | /* devid subset filter [pstart..pend) */ | |
801 | __le64 pstart; | |
802 | __le64 pend; | |
803 | ||
804 | /* btrfs virtual address space subset filter [vstart..vend) */ | |
805 | __le64 vstart; | |
806 | __le64 vend; | |
807 | ||
808 | /* | |
809 | * profile to convert to, single is denoted by | |
810 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
811 | */ | |
812 | __le64 target; | |
813 | ||
814 | /* BTRFS_BALANCE_ARGS_* */ | |
815 | __le64 flags; | |
816 | ||
817 | __le64 unused[8]; | |
818 | } __attribute__ ((__packed__)); | |
819 | ||
820 | /* | |
821 | * store balance parameters to disk so that balance can be properly | |
822 | * resumed after crash or unmount | |
823 | */ | |
824 | struct btrfs_balance_item { | |
825 | /* BTRFS_BALANCE_* */ | |
826 | __le64 flags; | |
827 | ||
828 | struct btrfs_disk_balance_args data; | |
829 | struct btrfs_disk_balance_args meta; | |
830 | struct btrfs_disk_balance_args sys; | |
831 | ||
832 | __le64 unused[4]; | |
833 | } __attribute__ ((__packed__)); | |
834 | ||
d899e052 YZ |
835 | #define BTRFS_FILE_EXTENT_INLINE 0 |
836 | #define BTRFS_FILE_EXTENT_REG 1 | |
837 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 838 | |
9f5fae2f | 839 | struct btrfs_file_extent_item { |
c8b97818 CM |
840 | /* |
841 | * transaction id that created this extent | |
842 | */ | |
71951f35 | 843 | __le64 generation; |
c8b97818 CM |
844 | /* |
845 | * max number of bytes to hold this extent in ram | |
846 | * when we split a compressed extent we can't know how big | |
847 | * each of the resulting pieces will be. So, this is | |
848 | * an upper limit on the size of the extent in ram instead of | |
849 | * an exact limit. | |
850 | */ | |
851 | __le64 ram_bytes; | |
852 | ||
853 | /* | |
854 | * 32 bits for the various ways we might encode the data, | |
855 | * including compression and encryption. If any of these | |
856 | * are set to something a given disk format doesn't understand | |
857 | * it is treated like an incompat flag for reading and writing, | |
858 | * but not for stat. | |
859 | */ | |
860 | u8 compression; | |
861 | u8 encryption; | |
862 | __le16 other_encoding; /* spare for later use */ | |
863 | ||
864 | /* are we inline data or a real extent? */ | |
236454df | 865 | u8 type; |
c8b97818 | 866 | |
9f5fae2f CM |
867 | /* |
868 | * disk space consumed by the extent, checksum blocks are included | |
869 | * in these numbers | |
870 | */ | |
db94535d CM |
871 | __le64 disk_bytenr; |
872 | __le64 disk_num_bytes; | |
9f5fae2f | 873 | /* |
dee26a9f | 874 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
875 | * this extent record is for. This allows a file extent to point |
876 | * into the middle of an existing extent on disk, sharing it | |
877 | * between two snapshots (useful if some bytes in the middle of the | |
878 | * extent have changed | |
879 | */ | |
880 | __le64 offset; | |
881 | /* | |
c8b97818 CM |
882 | * the logical number of file blocks (no csums included). This |
883 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 884 | */ |
db94535d | 885 | __le64 num_bytes; |
c8b97818 | 886 | |
9f5fae2f CM |
887 | } __attribute__ ((__packed__)); |
888 | ||
f254e52c | 889 | struct btrfs_csum_item { |
509659cd | 890 | u8 csum; |
f254e52c CM |
891 | } __attribute__ ((__packed__)); |
892 | ||
733f4fbb SB |
893 | struct btrfs_dev_stats_item { |
894 | /* | |
895 | * grow this item struct at the end for future enhancements and keep | |
896 | * the existing values unchanged | |
897 | */ | |
898 | __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; | |
899 | } __attribute__ ((__packed__)); | |
900 | ||
e922e087 SB |
901 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 |
902 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 | |
903 | #define BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED 0 | |
904 | #define BTRFS_DEV_REPLACE_ITEM_STATE_STARTED 1 | |
905 | #define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 2 | |
906 | #define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 3 | |
907 | #define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 4 | |
908 | ||
909 | struct btrfs_dev_replace { | |
910 | u64 replace_state; /* see #define above */ | |
911 | u64 time_started; /* seconds since 1-Jan-1970 */ | |
912 | u64 time_stopped; /* seconds since 1-Jan-1970 */ | |
913 | atomic64_t num_write_errors; | |
914 | atomic64_t num_uncorrectable_read_errors; | |
915 | ||
916 | u64 cursor_left; | |
917 | u64 committed_cursor_left; | |
918 | u64 cursor_left_last_write_of_item; | |
919 | u64 cursor_right; | |
920 | ||
921 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
922 | ||
923 | int is_valid; | |
924 | int item_needs_writeback; | |
925 | struct btrfs_device *srcdev; | |
926 | struct btrfs_device *tgtdev; | |
927 | ||
928 | pid_t lock_owner; | |
929 | atomic_t nesting_level; | |
930 | struct mutex lock_finishing_cancel_unmount; | |
931 | struct mutex lock_management_lock; | |
932 | struct mutex lock; | |
933 | ||
934 | struct btrfs_scrub_progress scrub_progress; | |
935 | }; | |
936 | ||
a2bff640 SB |
937 | struct btrfs_dev_replace_item { |
938 | /* | |
939 | * grow this item struct at the end for future enhancements and keep | |
940 | * the existing values unchanged | |
941 | */ | |
942 | __le64 src_devid; | |
943 | __le64 cursor_left; | |
944 | __le64 cursor_right; | |
945 | __le64 cont_reading_from_srcdev_mode; | |
946 | ||
947 | __le64 replace_state; | |
948 | __le64 time_started; | |
949 | __le64 time_stopped; | |
950 | __le64 num_write_errors; | |
951 | __le64 num_uncorrectable_read_errors; | |
952 | } __attribute__ ((__packed__)); | |
953 | ||
0b86a832 | 954 | /* different types of block groups (and chunks) */ |
52ba6929 ID |
955 | #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) |
956 | #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) | |
957 | #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) | |
958 | #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) | |
959 | #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) | |
960 | #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) | |
961 | #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) | |
53b381b3 DW |
962 | #define BTRFS_BLOCK_GROUP_RAID5 (1 << 7) |
963 | #define BTRFS_BLOCK_GROUP_RAID6 (1 << 8) | |
a46d11a8 | 964 | #define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE |
e6ec716f MX |
965 | |
966 | enum btrfs_raid_types { | |
967 | BTRFS_RAID_RAID10, | |
968 | BTRFS_RAID_RAID1, | |
969 | BTRFS_RAID_DUP, | |
970 | BTRFS_RAID_RAID0, | |
971 | BTRFS_RAID_SINGLE, | |
e942f883 CM |
972 | BTRFS_RAID_RAID5, |
973 | BTRFS_RAID_RAID6, | |
e6ec716f MX |
974 | BTRFS_NR_RAID_TYPES |
975 | }; | |
52ba6929 ID |
976 | |
977 | #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \ | |
978 | BTRFS_BLOCK_GROUP_SYSTEM | \ | |
979 | BTRFS_BLOCK_GROUP_METADATA) | |
980 | ||
981 | #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \ | |
982 | BTRFS_BLOCK_GROUP_RAID1 | \ | |
53b381b3 DW |
983 | BTRFS_BLOCK_GROUP_RAID5 | \ |
984 | BTRFS_BLOCK_GROUP_RAID6 | \ | |
52ba6929 ID |
985 | BTRFS_BLOCK_GROUP_DUP | \ |
986 | BTRFS_BLOCK_GROUP_RAID10) | |
a46d11a8 ID |
987 | /* |
988 | * We need a bit for restriper to be able to tell when chunks of type | |
989 | * SINGLE are available. This "extended" profile format is used in | |
990 | * fs_info->avail_*_alloc_bits (in-memory) and balance item fields | |
991 | * (on-disk). The corresponding on-disk bit in chunk.type is reserved | |
992 | * to avoid remappings between two formats in future. | |
993 | */ | |
994 | #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) | |
995 | ||
899c81ea ID |
996 | #define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | \ |
997 | BTRFS_AVAIL_ALLOC_BIT_SINGLE) | |
998 | ||
999 | static inline u64 chunk_to_extended(u64 flags) | |
1000 | { | |
1001 | if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0) | |
1002 | flags |= BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
1003 | ||
1004 | return flags; | |
1005 | } | |
1006 | static inline u64 extended_to_chunk(u64 flags) | |
1007 | { | |
1008 | return flags & ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
1009 | } | |
1010 | ||
9078a3e1 CM |
1011 | struct btrfs_block_group_item { |
1012 | __le64 used; | |
0b86a832 CM |
1013 | __le64 chunk_objectid; |
1014 | __le64 flags; | |
9078a3e1 CM |
1015 | } __attribute__ ((__packed__)); |
1016 | ||
630dc772 AJ |
1017 | /* |
1018 | * is subvolume quota turned on? | |
1019 | */ | |
1020 | #define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) | |
1021 | /* | |
1022 | * SCANNING is set during the initialization phase | |
1023 | */ | |
1024 | #define BTRFS_QGROUP_STATUS_FLAG_SCANNING (1ULL << 1) | |
1025 | /* | |
1026 | * Some qgroup entries are known to be out of date, | |
1027 | * either because the configuration has changed in a way that | |
1028 | * makes a rescan necessary, or because the fs has been mounted | |
1029 | * with a non-qgroup-aware version. | |
1030 | * Turning qouta off and on again makes it inconsistent, too. | |
1031 | */ | |
1032 | #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) | |
1033 | ||
1034 | #define BTRFS_QGROUP_STATUS_VERSION 1 | |
1035 | ||
1036 | struct btrfs_qgroup_status_item { | |
1037 | __le64 version; | |
1038 | /* | |
1039 | * the generation is updated during every commit. As older | |
1040 | * versions of btrfs are not aware of qgroups, it will be | |
1041 | * possible to detect inconsistencies by checking the | |
1042 | * generation on mount time | |
1043 | */ | |
1044 | __le64 generation; | |
1045 | ||
1046 | /* flag definitions see above */ | |
1047 | __le64 flags; | |
1048 | ||
1049 | /* | |
1050 | * only used during scanning to record the progress | |
1051 | * of the scan. It contains a logical address | |
1052 | */ | |
1053 | __le64 scan; | |
1054 | } __attribute__ ((__packed__)); | |
1055 | ||
1056 | struct btrfs_qgroup_info_item { | |
1057 | __le64 generation; | |
1058 | __le64 rfer; | |
1059 | __le64 rfer_cmpr; | |
1060 | __le64 excl; | |
1061 | __le64 excl_cmpr; | |
1062 | } __attribute__ ((__packed__)); | |
1063 | ||
1064 | /* flags definition for qgroup limits */ | |
1065 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) | |
1066 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) | |
1067 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) | |
1068 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) | |
1069 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) | |
1070 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) | |
1071 | ||
1072 | struct btrfs_qgroup_limit_item { | |
1073 | /* | |
1074 | * only updated when any of the other values change | |
1075 | */ | |
1076 | __le64 flags; | |
1077 | __le64 max_rfer; | |
1078 | __le64 max_excl; | |
1079 | __le64 rsv_rfer; | |
1080 | __le64 rsv_excl; | |
1081 | } __attribute__ ((__packed__)); | |
1082 | ||
6324fbf3 CM |
1083 | struct btrfs_space_info { |
1084 | u64 flags; | |
6a63209f | 1085 | |
89a55897 JB |
1086 | u64 total_bytes; /* total bytes in the space, |
1087 | this doesn't take mirrors into account */ | |
b742bb82 | 1088 | u64 bytes_used; /* total bytes used, |
e9c54999 | 1089 | this doesn't take mirrors into account */ |
6a63209f JB |
1090 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
1091 | transaction finishes */ | |
1092 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
1093 | current allocations */ | |
1094 | u64 bytes_readonly; /* total bytes that are read only */ | |
8929ecfa | 1095 | |
6a63209f | 1096 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 1097 | delalloc/allocations */ |
b742bb82 | 1098 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
1099 | u64 disk_total; /* total bytes on disk, takes mirrors into |
1100 | account */ | |
6a63209f | 1101 | |
36e39c40 CM |
1102 | /* |
1103 | * we bump reservation progress every time we decrement | |
1104 | * bytes_reserved. This way people waiting for reservations | |
1105 | * know something good has happened and they can check | |
1106 | * for progress. The number here isn't to be trusted, it | |
1107 | * just shows reclaim activity | |
1108 | */ | |
1109 | unsigned long reservation_progress; | |
1110 | ||
4ea02885 | 1111 | unsigned int full:1; /* indicates that we cannot allocate any more |
6a63209f | 1112 | chunks for this space */ |
4ea02885 | 1113 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ |
6d74119f | 1114 | |
fdb5effd JB |
1115 | unsigned int flush:1; /* set if we are trying to make space */ |
1116 | ||
4ea02885 DS |
1117 | unsigned int force_alloc; /* set if we need to force a chunk |
1118 | alloc for this space */ | |
6a63209f | 1119 | |
6324fbf3 | 1120 | struct list_head list; |
0f9dd46c JB |
1121 | |
1122 | /* for block groups in our same type */ | |
b742bb82 | 1123 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
0f9dd46c | 1124 | spinlock_t lock; |
80eb234a | 1125 | struct rw_semaphore groups_sem; |
fdb5effd | 1126 | wait_queue_head_t wait; |
0f9dd46c JB |
1127 | }; |
1128 | ||
66d8f3dd MX |
1129 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
1130 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
1131 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
1132 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
1133 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
1134 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
1135 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
1136 | ||
f0486c68 YZ |
1137 | struct btrfs_block_rsv { |
1138 | u64 size; | |
1139 | u64 reserved; | |
f0486c68 | 1140 | struct btrfs_space_info *space_info; |
f0486c68 | 1141 | spinlock_t lock; |
66d8f3dd MX |
1142 | unsigned short full; |
1143 | unsigned short type; | |
1144 | unsigned short failfast; | |
f0486c68 YZ |
1145 | }; |
1146 | ||
fa9c0d79 CM |
1147 | /* |
1148 | * free clusters are used to claim free space in relatively large chunks, | |
1149 | * allowing us to do less seeky writes. They are used for all metadata | |
1150 | * allocations and data allocations in ssd mode. | |
1151 | */ | |
1152 | struct btrfs_free_cluster { | |
1153 | spinlock_t lock; | |
1154 | spinlock_t refill_lock; | |
1155 | struct rb_root root; | |
1156 | ||
1157 | /* largest extent in this cluster */ | |
1158 | u64 max_size; | |
1159 | ||
1160 | /* first extent starting offset */ | |
1161 | u64 window_start; | |
1162 | ||
1163 | struct btrfs_block_group_cache *block_group; | |
1164 | /* | |
1165 | * when a cluster is allocated from a block group, we put the | |
1166 | * cluster onto a list in the block group so that it can | |
1167 | * be freed before the block group is freed. | |
1168 | */ | |
1169 | struct list_head block_group_list; | |
6324fbf3 CM |
1170 | }; |
1171 | ||
817d52f8 JB |
1172 | enum btrfs_caching_type { |
1173 | BTRFS_CACHE_NO = 0, | |
1174 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
1175 | BTRFS_CACHE_FAST = 2, |
1176 | BTRFS_CACHE_FINISHED = 3, | |
817d52f8 JB |
1177 | }; |
1178 | ||
0af3d00b JB |
1179 | enum btrfs_disk_cache_state { |
1180 | BTRFS_DC_WRITTEN = 0, | |
1181 | BTRFS_DC_ERROR = 1, | |
1182 | BTRFS_DC_CLEAR = 2, | |
1183 | BTRFS_DC_SETUP = 3, | |
1184 | BTRFS_DC_NEED_WRITE = 4, | |
1185 | }; | |
1186 | ||
11833d66 YZ |
1187 | struct btrfs_caching_control { |
1188 | struct list_head list; | |
1189 | struct mutex mutex; | |
1190 | wait_queue_head_t wait; | |
bab39bf9 | 1191 | struct btrfs_work work; |
11833d66 YZ |
1192 | struct btrfs_block_group_cache *block_group; |
1193 | u64 progress; | |
1194 | atomic_t count; | |
1195 | }; | |
1196 | ||
9078a3e1 CM |
1197 | struct btrfs_block_group_cache { |
1198 | struct btrfs_key key; | |
1199 | struct btrfs_block_group_item item; | |
817d52f8 | 1200 | struct btrfs_fs_info *fs_info; |
0af3d00b | 1201 | struct inode *inode; |
c286ac48 | 1202 | spinlock_t lock; |
324ae4df | 1203 | u64 pinned; |
e8569813 | 1204 | u64 reserved; |
1b2da372 | 1205 | u64 bytes_super; |
0b86a832 | 1206 | u64 flags; |
96303081 | 1207 | u64 sectorsize; |
5b0e95bf | 1208 | u64 cache_generation; |
53b381b3 DW |
1209 | |
1210 | /* for raid56, this is a full stripe, without parity */ | |
1211 | unsigned long full_stripe_len; | |
1212 | ||
0410c94a MK |
1213 | unsigned int ro:1; |
1214 | unsigned int dirty:1; | |
1215 | unsigned int iref:1; | |
0af3d00b JB |
1216 | |
1217 | int disk_cache_state; | |
0f9dd46c | 1218 | |
817d52f8 | 1219 | /* cache tracking stuff */ |
817d52f8 | 1220 | int cached; |
11833d66 YZ |
1221 | struct btrfs_caching_control *caching_ctl; |
1222 | u64 last_byte_to_unpin; | |
817d52f8 | 1223 | |
0f9dd46c JB |
1224 | struct btrfs_space_info *space_info; |
1225 | ||
1226 | /* free space cache stuff */ | |
34d52cb6 | 1227 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
1228 | |
1229 | /* block group cache stuff */ | |
1230 | struct rb_node cache_node; | |
1231 | ||
1232 | /* for block groups in the same raid type */ | |
1233 | struct list_head list; | |
d2fb3437 YZ |
1234 | |
1235 | /* usage count */ | |
1236 | atomic_t count; | |
fa9c0d79 CM |
1237 | |
1238 | /* List of struct btrfs_free_clusters for this block group. | |
1239 | * Today it will only have one thing on it, but that may change | |
1240 | */ | |
1241 | struct list_head cluster_list; | |
ea658bad JB |
1242 | |
1243 | /* For delayed block group creation */ | |
1244 | struct list_head new_bg_list; | |
9078a3e1 | 1245 | }; |
0b86a832 | 1246 | |
097b8a7c JS |
1247 | /* delayed seq elem */ |
1248 | struct seq_list { | |
1249 | struct list_head list; | |
1250 | u64 seq; | |
1251 | }; | |
1252 | ||
5d80366e JB |
1253 | enum btrfs_orphan_cleanup_state { |
1254 | ORPHAN_CLEANUP_STARTED = 1, | |
1255 | ORPHAN_CLEANUP_DONE = 2, | |
1256 | }; | |
1257 | ||
53b381b3 DW |
1258 | /* used by the raid56 code to lock stripes for read/modify/write */ |
1259 | struct btrfs_stripe_hash { | |
1260 | struct list_head hash_list; | |
1261 | wait_queue_head_t wait; | |
1262 | spinlock_t lock; | |
1263 | }; | |
1264 | ||
1265 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
1266 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
1267 | struct list_head stripe_cache; |
1268 | spinlock_t cache_lock; | |
1269 | int cache_size; | |
1270 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
1271 | }; |
1272 | ||
1273 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
1274 | ||
097b8a7c | 1275 | /* fs_info */ |
5d4f98a2 | 1276 | struct reloc_control; |
0b86a832 | 1277 | struct btrfs_device; |
8a4b83cc | 1278 | struct btrfs_fs_devices; |
c9e9f97b | 1279 | struct btrfs_balance_control; |
16cdcec7 | 1280 | struct btrfs_delayed_root; |
9f5fae2f | 1281 | struct btrfs_fs_info { |
5f39d397 | 1282 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 1283 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
1284 | struct btrfs_root *extent_root; |
1285 | struct btrfs_root *tree_root; | |
0b86a832 CM |
1286 | struct btrfs_root *chunk_root; |
1287 | struct btrfs_root *dev_root; | |
3de4586c | 1288 | struct btrfs_root *fs_root; |
d20f7043 | 1289 | struct btrfs_root *csum_root; |
416ac51d | 1290 | struct btrfs_root *quota_root; |
e02119d5 CM |
1291 | |
1292 | /* the log root tree is a directory of all the other log roots */ | |
1293 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
1294 | |
1295 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 1296 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 1297 | |
0f9dd46c JB |
1298 | /* block group cache stuff */ |
1299 | spinlock_t block_group_cache_lock; | |
a1897fdd | 1300 | u64 first_logical_byte; |
0f9dd46c JB |
1301 | struct rb_root block_group_cache_tree; |
1302 | ||
2bf64758 JB |
1303 | /* keep track of unallocated space */ |
1304 | spinlock_t free_chunk_lock; | |
1305 | u64 free_chunk_space; | |
1306 | ||
11833d66 YZ |
1307 | struct extent_io_tree freed_extents[2]; |
1308 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 1309 | |
0b86a832 CM |
1310 | /* logical->physical extent mapping */ |
1311 | struct btrfs_mapping_tree mapping_tree; | |
1312 | ||
16cdcec7 MX |
1313 | /* |
1314 | * block reservation for extent, checksum, root tree and | |
1315 | * delayed dir index item | |
1316 | */ | |
f0486c68 YZ |
1317 | struct btrfs_block_rsv global_block_rsv; |
1318 | /* block reservation for delay allocation */ | |
1319 | struct btrfs_block_rsv delalloc_block_rsv; | |
1320 | /* block reservation for metadata operations */ | |
1321 | struct btrfs_block_rsv trans_block_rsv; | |
1322 | /* block reservation for chunk tree */ | |
1323 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
1324 | /* block reservation for delayed operations */ |
1325 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
1326 | |
1327 | struct btrfs_block_rsv empty_block_rsv; | |
1328 | ||
293ffd5f | 1329 | u64 generation; |
15ee9bc7 | 1330 | u64 last_trans_committed; |
12fcfd22 CM |
1331 | |
1332 | /* | |
1333 | * this is updated to the current trans every time a full commit | |
1334 | * is required instead of the faster short fsync log commits | |
1335 | */ | |
1336 | u64 last_trans_log_full_commit; | |
25cd999e | 1337 | unsigned long mount_opt; |
261507a0 | 1338 | unsigned long compress_type:4; |
8c6a3ee6 MX |
1339 | /* |
1340 | * It is a suggestive number, the read side is safe even it gets a | |
1341 | * wrong number because we will write out the data into a regular | |
1342 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
1343 | * so it is also safe. | |
1344 | */ | |
6f568d35 | 1345 | u64 max_inline; |
c018daec MX |
1346 | /* |
1347 | * Protected by ->chunk_mutex and sb->s_umount. | |
1348 | * | |
1349 | * The reason that we use two lock to protect it is because only | |
1350 | * remount and mount operations can change it and these two operations | |
1351 | * are under sb->s_umount, but the read side (chunk allocation) can not | |
1352 | * acquire sb->s_umount or the deadlock would happen. So we use two | |
1353 | * locks to protect it. On the write side, we must acquire two locks, | |
1354 | * and on the read side, we just need acquire one of them. | |
1355 | */ | |
8f662a76 | 1356 | u64 alloc_start; |
79154b1b | 1357 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 1358 | wait_queue_head_t transaction_throttle; |
f9295749 | 1359 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 1360 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 1361 | wait_queue_head_t async_submit_wait; |
e02119d5 | 1362 | |
6c41761f DS |
1363 | struct btrfs_super_block *super_copy; |
1364 | struct btrfs_super_block *super_for_commit; | |
0b86a832 | 1365 | struct block_device *__bdev; |
e20d96d6 | 1366 | struct super_block *sb; |
d98237b3 | 1367 | struct inode *btree_inode; |
04160088 | 1368 | struct backing_dev_info bdi; |
e02119d5 | 1369 | struct mutex tree_log_mutex; |
a74a4b97 CM |
1370 | struct mutex transaction_kthread_mutex; |
1371 | struct mutex cleaner_mutex; | |
925baedd | 1372 | struct mutex chunk_mutex; |
7d9eb12c | 1373 | struct mutex volume_mutex; |
53b381b3 DW |
1374 | |
1375 | /* this is used during read/modify/write to make sure | |
1376 | * no two ios are trying to mod the same stripe at the same | |
1377 | * time | |
1378 | */ | |
1379 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
1380 | ||
5a3f23d5 CM |
1381 | /* |
1382 | * this protects the ordered operations list only while we are | |
1383 | * processing all of the entries on it. This way we make | |
1384 | * sure the commit code doesn't find the list temporarily empty | |
1385 | * because another function happens to be doing non-waiting preflush | |
1386 | * before jumping into the main commit. | |
1387 | */ | |
1388 | struct mutex ordered_operations_mutex; | |
11833d66 | 1389 | struct rw_semaphore extent_commit_sem; |
5a3f23d5 | 1390 | |
c71bf099 | 1391 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 1392 | |
c71bf099 | 1393 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
1394 | struct srcu_struct subvol_srcu; |
1395 | ||
a4abeea4 | 1396 | spinlock_t trans_lock; |
7585717f CM |
1397 | /* |
1398 | * the reloc mutex goes with the trans lock, it is taken | |
1399 | * during commit to protect us from the relocation code | |
1400 | */ | |
1401 | struct mutex reloc_mutex; | |
1402 | ||
8fd17795 | 1403 | struct list_head trans_list; |
facda1e7 | 1404 | struct list_head dead_roots; |
11833d66 | 1405 | struct list_head caching_block_groups; |
e02119d5 | 1406 | |
24bbcf04 YZ |
1407 | spinlock_t delayed_iput_lock; |
1408 | struct list_head delayed_iputs; | |
1409 | ||
f29021b2 JS |
1410 | /* this protects tree_mod_seq_list */ |
1411 | spinlock_t tree_mod_seq_lock; | |
1412 | atomic_t tree_mod_seq; | |
1413 | struct list_head tree_mod_seq_list; | |
097b8a7c | 1414 | struct seq_list tree_mod_seq_elem; |
f29021b2 JS |
1415 | |
1416 | /* this protects tree_mod_log */ | |
1417 | rwlock_t tree_mod_log_lock; | |
1418 | struct rb_root tree_mod_log; | |
1419 | ||
cb03c743 | 1420 | atomic_t nr_async_submits; |
8c8bee1d | 1421 | atomic_t async_submit_draining; |
0986fe9e | 1422 | atomic_t nr_async_bios; |
771ed689 | 1423 | atomic_t async_delalloc_pages; |
a4abeea4 | 1424 | atomic_t open_ioctl_trans; |
ce9adaa5 | 1425 | |
3eaa2885 CM |
1426 | /* |
1427 | * this is used by the balancing code to wait for all the pending | |
1428 | * ordered extents | |
1429 | */ | |
1430 | spinlock_t ordered_extent_lock; | |
5a3f23d5 CM |
1431 | |
1432 | /* | |
1433 | * all of the data=ordered extents pending writeback | |
1434 | * these can span multiple transactions and basically include | |
1435 | * every dirty data page that isn't from nodatacow | |
1436 | */ | |
3eaa2885 | 1437 | struct list_head ordered_extents; |
5a3f23d5 | 1438 | |
963d678b | 1439 | spinlock_t delalloc_lock; |
5a3f23d5 CM |
1440 | /* |
1441 | * all of the inodes that have delalloc bytes. It is possible for | |
1442 | * this list to be empty even when there is still dirty data=ordered | |
1443 | * extents waiting to finish IO. | |
1444 | */ | |
ea8c2819 | 1445 | struct list_head delalloc_inodes; |
3eaa2885 | 1446 | |
8b712842 CM |
1447 | /* |
1448 | * there is a pool of worker threads for checksumming during writes | |
1449 | * and a pool for checksumming after reads. This is because readers | |
1450 | * can run with FS locks held, and the writers may be waiting for | |
1451 | * those locks. We don't want ordering in the pending list to cause | |
1452 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
1453 | * |
1454 | * A third pool does submit_bio to avoid deadlocking with the other | |
1455 | * two | |
8b712842 | 1456 | */ |
61d92c32 | 1457 | struct btrfs_workers generic_worker; |
8b712842 | 1458 | struct btrfs_workers workers; |
771ed689 | 1459 | struct btrfs_workers delalloc_workers; |
8ccf6f19 | 1460 | struct btrfs_workers flush_workers; |
8b712842 | 1461 | struct btrfs_workers endio_workers; |
d20f7043 | 1462 | struct btrfs_workers endio_meta_workers; |
53b381b3 DW |
1463 | struct btrfs_workers endio_raid56_workers; |
1464 | struct btrfs_workers rmw_workers; | |
cad321ad | 1465 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 1466 | struct btrfs_workers endio_write_workers; |
0cb59c99 | 1467 | struct btrfs_workers endio_freespace_worker; |
1cc127b5 | 1468 | struct btrfs_workers submit_workers; |
bab39bf9 | 1469 | struct btrfs_workers caching_workers; |
90519d66 | 1470 | struct btrfs_workers readahead_workers; |
bab39bf9 | 1471 | |
247e743c CM |
1472 | /* |
1473 | * fixup workers take dirty pages that didn't properly go through | |
1474 | * the cow mechanism and make them safe to write. It happens | |
1475 | * for the sys_munmap function call path | |
1476 | */ | |
1477 | struct btrfs_workers fixup_workers; | |
16cdcec7 | 1478 | struct btrfs_workers delayed_workers; |
a74a4b97 CM |
1479 | struct task_struct *transaction_kthread; |
1480 | struct task_struct *cleaner_kthread; | |
4543df7e | 1481 | int thread_pool_size; |
8b712842 | 1482 | |
58176a96 JB |
1483 | struct kobject super_kobj; |
1484 | struct completion kobj_unregister; | |
e66f709b | 1485 | int do_barriers; |
facda1e7 | 1486 | int closing; |
e02119d5 | 1487 | int log_root_recovering; |
a22285a6 | 1488 | int enospc_unlink; |
a4abeea4 | 1489 | int trans_no_join; |
9f5fae2f | 1490 | |
324ae4df | 1491 | u64 total_pinned; |
b9473439 | 1492 | |
e2d84521 MX |
1493 | /* used to keep from writing metadata until there is a nice batch */ |
1494 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 1495 | struct percpu_counter delalloc_bytes; |
e2d84521 | 1496 | s32 dirty_metadata_batch; |
963d678b MX |
1497 | s32 delalloc_batch; |
1498 | ||
0b86a832 CM |
1499 | struct list_head dirty_cowonly_roots; |
1500 | ||
8a4b83cc | 1501 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1502 | |
1503 | /* | |
1504 | * the space_info list is almost entirely read only. It only changes | |
1505 | * when we add a new raid type to the FS, and that happens | |
1506 | * very rarely. RCU is used to protect it. | |
1507 | */ | |
6324fbf3 | 1508 | struct list_head space_info; |
4184ea7f | 1509 | |
b4d7c3c9 LZ |
1510 | struct btrfs_space_info *data_sinfo; |
1511 | ||
5d4f98a2 YZ |
1512 | struct reloc_control *reloc_ctl; |
1513 | ||
fa9c0d79 CM |
1514 | /* data_alloc_cluster is only used in ssd mode */ |
1515 | struct btrfs_free_cluster data_alloc_cluster; | |
1516 | ||
1517 | /* all metadata allocations go through this cluster */ | |
1518 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1519 | |
4cb5300b CM |
1520 | /* auto defrag inodes go here */ |
1521 | spinlock_t defrag_inodes_lock; | |
1522 | struct rb_root defrag_inodes; | |
1523 | atomic_t defrag_running; | |
1524 | ||
de98ced9 MX |
1525 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
1526 | seqlock_t profiles_lock; | |
a46d11a8 ID |
1527 | /* |
1528 | * these three are in extended format (availability of single | |
1529 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
1530 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
1531 | */ | |
d18a2c44 CM |
1532 | u64 avail_data_alloc_bits; |
1533 | u64 avail_metadata_alloc_bits; | |
1534 | u64 avail_system_alloc_bits; | |
788f20eb | 1535 | |
c9e9f97b ID |
1536 | /* restriper state */ |
1537 | spinlock_t balance_lock; | |
1538 | struct mutex balance_mutex; | |
837d5b6e ID |
1539 | atomic_t balance_running; |
1540 | atomic_t balance_pause_req; | |
a7e99c69 | 1541 | atomic_t balance_cancel_req; |
c9e9f97b | 1542 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1543 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1544 | |
97e728d4 JB |
1545 | unsigned data_chunk_allocations; |
1546 | unsigned metadata_ratio; | |
1547 | ||
788f20eb | 1548 | void *bdev_holder; |
acce952b | 1549 | |
a2de733c AJ |
1550 | /* private scrub information */ |
1551 | struct mutex scrub_lock; | |
1552 | atomic_t scrubs_running; | |
1553 | atomic_t scrub_pause_req; | |
1554 | atomic_t scrubs_paused; | |
1555 | atomic_t scrub_cancel_req; | |
1556 | wait_queue_head_t scrub_pause_wait; | |
1557 | struct rw_semaphore scrub_super_lock; | |
1558 | int scrub_workers_refcnt; | |
1559 | struct btrfs_workers scrub_workers; | |
ff023aac SB |
1560 | struct btrfs_workers scrub_wr_completion_workers; |
1561 | struct btrfs_workers scrub_nocow_workers; | |
a2de733c | 1562 | |
21adbd5c SB |
1563 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1564 | u32 check_integrity_print_mask; | |
1565 | #endif | |
416ac51d AJ |
1566 | /* |
1567 | * quota information | |
1568 | */ | |
1569 | unsigned int quota_enabled:1; | |
1570 | ||
1571 | /* | |
1572 | * quota_enabled only changes state after a commit. This holds the | |
1573 | * next state. | |
1574 | */ | |
1575 | unsigned int pending_quota_state:1; | |
1576 | ||
1577 | /* is qgroup tracking in a consistent state? */ | |
1578 | u64 qgroup_flags; | |
1579 | ||
1580 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1581 | struct rb_root qgroup_tree; | |
1582 | spinlock_t qgroup_lock; | |
1583 | ||
1584 | /* list of dirty qgroups to be written at next commit */ | |
1585 | struct list_head dirty_qgroups; | |
1586 | ||
1587 | /* used by btrfs_qgroup_record_ref for an efficient tree traversal */ | |
1588 | u64 qgroup_seq; | |
21adbd5c | 1589 | |
acce952b | 1590 | /* filesystem state */ |
87533c47 | 1591 | unsigned long fs_state; |
16cdcec7 MX |
1592 | |
1593 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1594 | |
90519d66 AJ |
1595 | /* readahead tree */ |
1596 | spinlock_t reada_lock; | |
1597 | struct radix_tree_root reada_tree; | |
531f4b1a | 1598 | |
af31f5e5 CM |
1599 | /* next backup root to be overwritten */ |
1600 | int backup_root_index; | |
5af3e8cc SB |
1601 | |
1602 | int num_tolerated_disk_barrier_failures; | |
e922e087 SB |
1603 | |
1604 | /* device replace state */ | |
1605 | struct btrfs_dev_replace dev_replace; | |
5ac00add SB |
1606 | |
1607 | atomic_t mutually_exclusive_operation_running; | |
324ae4df | 1608 | }; |
0b86a832 | 1609 | |
9f5fae2f CM |
1610 | /* |
1611 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1612 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1613 | */ |
1614 | struct btrfs_root { | |
5f39d397 | 1615 | struct extent_buffer *node; |
925baedd | 1616 | |
5f39d397 | 1617 | struct extent_buffer *commit_root; |
e02119d5 | 1618 | struct btrfs_root *log_root; |
1a40e23b | 1619 | struct btrfs_root *reloc_root; |
31153d81 | 1620 | |
62e2749e CM |
1621 | struct btrfs_root_item root_item; |
1622 | struct btrfs_key root_key; | |
9f5fae2f | 1623 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1624 | struct extent_io_tree dirty_log_pages; |
1625 | ||
58176a96 JB |
1626 | struct kobject root_kobj; |
1627 | struct completion kobj_unregister; | |
a2135011 | 1628 | struct mutex objectid_mutex; |
7237f183 | 1629 | |
f0486c68 YZ |
1630 | spinlock_t accounting_lock; |
1631 | struct btrfs_block_rsv *block_rsv; | |
1632 | ||
581bb050 LZ |
1633 | /* free ino cache stuff */ |
1634 | struct mutex fs_commit_mutex; | |
1635 | struct btrfs_free_space_ctl *free_ino_ctl; | |
1636 | enum btrfs_caching_type cached; | |
1637 | spinlock_t cache_lock; | |
1638 | wait_queue_head_t cache_wait; | |
1639 | struct btrfs_free_space_ctl *free_ino_pinned; | |
1640 | u64 cache_progress; | |
82d5902d | 1641 | struct inode *cache_inode; |
581bb050 | 1642 | |
e02119d5 | 1643 | struct mutex log_mutex; |
7237f183 YZ |
1644 | wait_queue_head_t log_writer_wait; |
1645 | wait_queue_head_t log_commit_wait[2]; | |
1646 | atomic_t log_writers; | |
1647 | atomic_t log_commit[2]; | |
2ecb7923 | 1648 | atomic_t log_batch; |
7237f183 | 1649 | unsigned long log_transid; |
257c62e1 | 1650 | unsigned long last_log_commit; |
ff782e0a JB |
1651 | pid_t log_start_pid; |
1652 | bool log_multiple_pids; | |
ea8c2819 | 1653 | |
0f7d52f4 CM |
1654 | u64 objectid; |
1655 | u64 last_trans; | |
5f39d397 CM |
1656 | |
1657 | /* data allocations are done in sectorsize units */ | |
1658 | u32 sectorsize; | |
1659 | ||
1660 | /* node allocations are done in nodesize units */ | |
1661 | u32 nodesize; | |
1662 | ||
1663 | /* leaf allocations are done in leafsize units */ | |
1664 | u32 leafsize; | |
1665 | ||
87ee04eb CM |
1666 | u32 stripesize; |
1667 | ||
9f5fae2f | 1668 | u32 type; |
13a8a7c8 YZ |
1669 | |
1670 | u64 highest_objectid; | |
7585717f CM |
1671 | |
1672 | /* btrfs_record_root_in_trans is a multi-step process, | |
1673 | * and it can race with the balancing code. But the | |
1674 | * race is very small, and only the first time the root | |
1675 | * is added to each transaction. So in_trans_setup | |
1676 | * is used to tell us when more checks are required | |
1677 | */ | |
1678 | unsigned long in_trans_setup; | |
9f3a7427 | 1679 | int ref_cows; |
0b86a832 | 1680 | int track_dirty; |
4df27c4d YZ |
1681 | int in_radix; |
1682 | ||
3f157a2f | 1683 | u64 defrag_trans_start; |
6702ed49 | 1684 | struct btrfs_key defrag_progress; |
0ef3e66b | 1685 | struct btrfs_key defrag_max; |
6702ed49 | 1686 | int defrag_running; |
58176a96 | 1687 | char *name; |
0b86a832 CM |
1688 | |
1689 | /* the dirty list is only used by non-reference counted roots */ | |
1690 | struct list_head dirty_list; | |
7b128766 | 1691 | |
5d4f98a2 YZ |
1692 | struct list_head root_list; |
1693 | ||
2ab28f32 JB |
1694 | spinlock_t log_extents_lock[2]; |
1695 | struct list_head logged_list[2]; | |
1696 | ||
d68fc57b | 1697 | spinlock_t orphan_lock; |
8a35d95f | 1698 | atomic_t orphan_inodes; |
d68fc57b YZ |
1699 | struct btrfs_block_rsv *orphan_block_rsv; |
1700 | int orphan_item_inserted; | |
1701 | int orphan_cleanup_state; | |
3394e160 | 1702 | |
5d4f98a2 YZ |
1703 | spinlock_t inode_lock; |
1704 | /* red-black tree that keeps track of in-memory inodes */ | |
1705 | struct rb_root inode_tree; | |
1706 | ||
16cdcec7 MX |
1707 | /* |
1708 | * radix tree that keeps track of delayed nodes of every inode, | |
1709 | * protected by inode_lock | |
1710 | */ | |
1711 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1712 | /* |
1713 | * right now this just gets used so that a root has its own devid | |
1714 | * for stat. It may be used for more later | |
1715 | */ | |
0ee5dc67 | 1716 | dev_t anon_dev; |
f1ebcc74 LB |
1717 | |
1718 | int force_cow; | |
8ea05e3a | 1719 | |
5f3ab90a | 1720 | spinlock_t root_item_lock; |
62e2749e CM |
1721 | }; |
1722 | ||
4cb5300b CM |
1723 | struct btrfs_ioctl_defrag_range_args { |
1724 | /* start of the defrag operation */ | |
1725 | __u64 start; | |
1726 | ||
1727 | /* number of bytes to defrag, use (u64)-1 to say all */ | |
1728 | __u64 len; | |
1729 | ||
1730 | /* | |
1731 | * flags for the operation, which can include turning | |
1732 | * on compression for this one defrag | |
1733 | */ | |
1734 | __u64 flags; | |
1735 | ||
1736 | /* | |
1737 | * any extent bigger than this will be considered | |
1738 | * already defragged. Use 0 to take the kernel default | |
1739 | * Use 1 to say every single extent must be rewritten | |
1740 | */ | |
1741 | __u32 extent_thresh; | |
1742 | ||
1743 | /* | |
1744 | * which compression method to use if turning on compression | |
1745 | * for this defrag operation. If unspecified, zlib will | |
1746 | * be used | |
1747 | */ | |
1748 | __u32 compress_type; | |
1749 | ||
1750 | /* spare for later */ | |
1751 | __u32 unused[4]; | |
1752 | }; | |
1753 | ||
1754 | ||
1e1d2701 CM |
1755 | /* |
1756 | * inode items have the data typically returned from stat and store other | |
1757 | * info about object characteristics. There is one for every file and dir in | |
1758 | * the FS | |
1759 | */ | |
9078a3e1 | 1760 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af | 1761 | #define BTRFS_INODE_REF_KEY 12 |
f186373f | 1762 | #define BTRFS_INODE_EXTREF_KEY 13 |
0660b5af CM |
1763 | #define BTRFS_XATTR_ITEM_KEY 24 |
1764 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 1765 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
1766 | |
1767 | /* | |
1768 | * dir items are the name -> inode pointers in a directory. There is one | |
1769 | * for every name in a directory. | |
1770 | */ | |
0660b5af CM |
1771 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
1772 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
1773 | #define BTRFS_DIR_ITEM_KEY 84 | |
1774 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 1775 | /* |
9078a3e1 | 1776 | * extent data is for file data |
1e1d2701 | 1777 | */ |
0660b5af | 1778 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 1779 | |
f254e52c | 1780 | /* |
d20f7043 CM |
1781 | * extent csums are stored in a separate tree and hold csums for |
1782 | * an entire extent on disk. | |
f254e52c | 1783 | */ |
d20f7043 | 1784 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 1785 | |
1e1d2701 | 1786 | /* |
d4a78947 | 1787 | * root items point to tree roots. They are typically in the root |
1e1d2701 CM |
1788 | * tree used by the super block to find all the other trees |
1789 | */ | |
0660b5af CM |
1790 | #define BTRFS_ROOT_ITEM_KEY 132 |
1791 | ||
1792 | /* | |
1793 | * root backrefs tie subvols and snapshots to the directory entries that | |
1794 | * reference them | |
1795 | */ | |
1796 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1797 | ||
1798 | /* | |
1799 | * root refs make a fast index for listing all of the snapshots and | |
1800 | * subvolumes referenced by a given root. They point directly to the | |
1801 | * directory item in the root that references the subvol | |
1802 | */ | |
1803 | #define BTRFS_ROOT_REF_KEY 156 | |
1804 | ||
1e1d2701 CM |
1805 | /* |
1806 | * extent items are in the extent map tree. These record which blocks | |
1807 | * are used, and how many references there are to each block | |
1808 | */ | |
0660b5af | 1809 | #define BTRFS_EXTENT_ITEM_KEY 168 |
5d4f98a2 YZ |
1810 | |
1811 | #define BTRFS_TREE_BLOCK_REF_KEY 176 | |
1812 | ||
1813 | #define BTRFS_EXTENT_DATA_REF_KEY 178 | |
1814 | ||
1815 | #define BTRFS_EXTENT_REF_V0_KEY 180 | |
1816 | ||
1817 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 | |
1818 | ||
1819 | #define BTRFS_SHARED_DATA_REF_KEY 184 | |
9078a3e1 CM |
1820 | |
1821 | /* | |
1822 | * block groups give us hints into the extent allocation trees. Which | |
1823 | * blocks are free etc etc | |
1824 | */ | |
0660b5af | 1825 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 1826 | |
0660b5af CM |
1827 | #define BTRFS_DEV_EXTENT_KEY 204 |
1828 | #define BTRFS_DEV_ITEM_KEY 216 | |
1829 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 1830 | |
630dc772 AJ |
1831 | /* |
1832 | * Records the overall state of the qgroups. | |
1833 | * There's only one instance of this key present, | |
1834 | * (0, BTRFS_QGROUP_STATUS_KEY, 0) | |
1835 | */ | |
1836 | #define BTRFS_QGROUP_STATUS_KEY 240 | |
1837 | /* | |
1838 | * Records the currently used space of the qgroup. | |
1839 | * One key per qgroup, (0, BTRFS_QGROUP_INFO_KEY, qgroupid). | |
1840 | */ | |
1841 | #define BTRFS_QGROUP_INFO_KEY 242 | |
1842 | /* | |
1843 | * Contains the user configured limits for the qgroup. | |
1844 | * One key per qgroup, (0, BTRFS_QGROUP_LIMIT_KEY, qgroupid). | |
1845 | */ | |
1846 | #define BTRFS_QGROUP_LIMIT_KEY 244 | |
1847 | /* | |
1848 | * Records the child-parent relationship of qgroups. For | |
1849 | * each relation, 2 keys are present: | |
1850 | * (childid, BTRFS_QGROUP_RELATION_KEY, parentid) | |
1851 | * (parentid, BTRFS_QGROUP_RELATION_KEY, childid) | |
1852 | */ | |
1853 | #define BTRFS_QGROUP_RELATION_KEY 246 | |
1854 | ||
0940ebf6 ID |
1855 | #define BTRFS_BALANCE_ITEM_KEY 248 |
1856 | ||
733f4fbb SB |
1857 | /* |
1858 | * Persistantly stores the io stats in the device tree. | |
1859 | * One key for all stats, (0, BTRFS_DEV_STATS_KEY, devid). | |
1860 | */ | |
1861 | #define BTRFS_DEV_STATS_KEY 249 | |
1862 | ||
a2bff640 SB |
1863 | /* |
1864 | * Persistantly stores the device replace state in the device tree. | |
1865 | * The key is built like this: (0, BTRFS_DEV_REPLACE_KEY, 0). | |
1866 | */ | |
1867 | #define BTRFS_DEV_REPLACE_KEY 250 | |
1868 | ||
1e1d2701 CM |
1869 | /* |
1870 | * string items are for debugging. They just store a short string of | |
1871 | * data in the FS | |
1872 | */ | |
9078a3e1 CM |
1873 | #define BTRFS_STRING_ITEM_KEY 253 |
1874 | ||
0942caa3 DS |
1875 | /* |
1876 | * Flags for mount options. | |
1877 | * | |
1878 | * Note: don't forget to add new options to btrfs_show_options() | |
1879 | */ | |
21ad10cf CM |
1880 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1881 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1882 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1883 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1884 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1885 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1886 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1887 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1888 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1889 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1890 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1891 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1892 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1893 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1894 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1895 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1896 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1897 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
af31f5e5 | 1898 | #define BTRFS_MOUNT_RECOVERY (1 << 18) |
9555c6c1 | 1899 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1900 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1901 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1902 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
b6cda9bc CM |
1903 | |
1904 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
1905 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1906 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
b6cda9bc CM |
1907 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ |
1908 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
1909 | /* |
1910 | * Inode flags | |
1911 | */ | |
fdebe2bd Y |
1912 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1913 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1914 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1915 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1916 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1917 | #define BTRFS_INODE_SYNC (1 << 5) |
1918 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1919 | #define BTRFS_INODE_APPEND (1 << 7) | |
1920 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1921 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1922 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1923 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1924 | |
08fe4db1 LZ |
1925 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1926 | ||
cfed81a0 CM |
1927 | struct btrfs_map_token { |
1928 | struct extent_buffer *eb; | |
1929 | char *kaddr; | |
1930 | unsigned long offset; | |
1931 | }; | |
1932 | ||
1933 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) | |
1934 | { | |
ad914559 | 1935 | token->kaddr = NULL; |
cfed81a0 CM |
1936 | } |
1937 | ||
5f39d397 CM |
1938 | /* some macros to generate set/get funcs for the struct fields. This |
1939 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
1940 | * one for u8: | |
1941 | */ | |
1942 | #define le8_to_cpu(v) (v) | |
1943 | #define cpu_to_le8(v) (v) | |
1944 | #define __le8 u8 | |
1945 | ||
1946 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1947 | read_extent_buffer(eb, (char *)(result), \ | |
1948 | ((unsigned long)(ptr)) + \ | |
1949 | offsetof(type, member), \ | |
1950 | sizeof(((type *)0)->member))) | |
1951 | ||
1952 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1953 | write_extent_buffer(eb, (char *)(result), \ | |
1954 | ((unsigned long)(ptr)) + \ | |
1955 | offsetof(type, member), \ | |
1956 | sizeof(((type *)0)->member))) | |
1957 | ||
18077bb4 LZ |
1958 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1959 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1960 | unsigned long off, \ | |
1961 | struct btrfs_map_token *token); \ | |
1962 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1963 | unsigned long off, u##bits val, \ | |
1964 | struct btrfs_map_token *token); \ | |
1965 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ | |
1966 | unsigned long off) \ | |
1967 | { \ | |
1968 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1969 | } \ | |
1970 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ | |
1971 | unsigned long off, u##bits val) \ | |
1972 | { \ | |
1973 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1974 | } | |
1975 | ||
1976 | DECLARE_BTRFS_SETGET_BITS(8) | |
1977 | DECLARE_BTRFS_SETGET_BITS(16) | |
1978 | DECLARE_BTRFS_SETGET_BITS(32) | |
1979 | DECLARE_BTRFS_SETGET_BITS(64) | |
1980 | ||
5f39d397 | 1981 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
18077bb4 LZ |
1982 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
1983 | { \ | |
1984 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1985 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1986 | } \ | |
1987 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1988 | u##bits val) \ | |
1989 | { \ | |
1990 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1991 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1992 | } \ | |
1993 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ | |
1994 | struct btrfs_map_token *token) \ | |
1995 | { \ | |
1996 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1997 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1998 | } \ | |
1999 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
2000 | type *s, u##bits val, \ | |
2001 | struct btrfs_map_token *token) \ | |
2002 | { \ | |
2003 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2004 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
2005 | } | |
5f39d397 CM |
2006 | |
2007 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
2008 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
2009 | { \ | |
727011e0 | 2010 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 2011 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 2012 | return res; \ |
5f39d397 CM |
2013 | } \ |
2014 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
2015 | u##bits val) \ | |
2016 | { \ | |
727011e0 | 2017 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 2018 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 2019 | } |
9078a3e1 | 2020 | |
5f39d397 CM |
2021 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
2022 | static inline u##bits btrfs_##name(type *s) \ | |
2023 | { \ | |
2024 | return le##bits##_to_cpu(s->member); \ | |
2025 | } \ | |
2026 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
2027 | { \ | |
2028 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
2029 | } |
2030 | ||
0b86a832 CM |
2031 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
2032 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
2033 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
2034 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
2035 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
2036 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
2037 | start_offset, 64); | |
0b86a832 CM |
2038 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
2039 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
2040 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
2041 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
2042 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 2043 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 2044 | |
8a4b83cc CM |
2045 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
2046 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
2047 | total_bytes, 64); | |
2048 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
2049 | bytes_used, 64); | |
2050 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
2051 | io_align, 32); | |
2052 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
2053 | io_width, 32); | |
2054 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
2055 | sector_size, 32); | |
2056 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
2057 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
2058 | dev_group, 32); | |
2059 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
2060 | seek_speed, 8); | |
2061 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
2062 | bandwidth, 8); | |
2b82032c YZ |
2063 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
2064 | generation, 64); | |
8a4b83cc | 2065 | |
0b86a832 CM |
2066 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
2067 | { | |
2068 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
2069 | } | |
2070 | ||
2b82032c YZ |
2071 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
2072 | { | |
2073 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
2074 | } | |
2075 | ||
e17cade2 | 2076 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
2077 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
2078 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
2079 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
2080 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
2081 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
2082 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
2083 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 2084 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
2085 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
2086 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
2087 | ||
e17cade2 CM |
2088 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
2089 | { | |
2090 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
2091 | } | |
2092 | ||
2093 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
2094 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
2095 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
2096 | stripe_len, 64); | |
2097 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
2098 | io_align, 32); | |
2099 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
2100 | io_width, 32); | |
2101 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
2102 | sector_size, 32); | |
2103 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
2104 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
2105 | num_stripes, 16); | |
321aecc6 CM |
2106 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
2107 | sub_stripes, 16); | |
0b86a832 CM |
2108 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
2109 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
2110 | ||
2111 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
2112 | int nr) | |
2113 | { | |
2114 | unsigned long offset = (unsigned long)c; | |
2115 | offset += offsetof(struct btrfs_chunk, stripe); | |
2116 | offset += nr * sizeof(struct btrfs_stripe); | |
2117 | return (struct btrfs_stripe *)offset; | |
2118 | } | |
2119 | ||
a443755f CM |
2120 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
2121 | { | |
2122 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
2123 | } | |
2124 | ||
0b86a832 CM |
2125 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
2126 | struct btrfs_chunk *c, int nr) | |
2127 | { | |
2128 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
2129 | } | |
2130 | ||
0b86a832 CM |
2131 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
2132 | struct btrfs_chunk *c, int nr) | |
2133 | { | |
2134 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
2135 | } | |
2136 | ||
5f39d397 CM |
2137 | /* struct btrfs_block_group_item */ |
2138 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
2139 | used, 64); | |
2140 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
2141 | used, 64); | |
0b86a832 CM |
2142 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
2143 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
2144 | |
2145 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
2146 | struct btrfs_block_group_item, chunk_objectid, 64); |
2147 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
2148 | struct btrfs_block_group_item, flags, 64); | |
2149 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
2150 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 2151 | |
3954401f CM |
2152 | /* struct btrfs_inode_ref */ |
2153 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 2154 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 2155 | |
f186373f MF |
2156 | /* struct btrfs_inode_extref */ |
2157 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
2158 | parent_objectid, 64); | |
2159 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
2160 | name_len, 16); | |
2161 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
2162 | ||
5f39d397 CM |
2163 | /* struct btrfs_inode_item */ |
2164 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 2165 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 2166 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 2167 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 2168 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
2169 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
2170 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
2171 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
2172 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
2173 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 2174 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 2175 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 2176 | |
0b86a832 | 2177 | static inline struct btrfs_timespec * |
5f39d397 | 2178 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2179 | { |
5f39d397 CM |
2180 | unsigned long ptr = (unsigned long)inode_item; |
2181 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 2182 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2183 | } |
2184 | ||
0b86a832 | 2185 | static inline struct btrfs_timespec * |
5f39d397 | 2186 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2187 | { |
5f39d397 CM |
2188 | unsigned long ptr = (unsigned long)inode_item; |
2189 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 2190 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2191 | } |
2192 | ||
0b86a832 | 2193 | static inline struct btrfs_timespec * |
5f39d397 | 2194 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2195 | { |
5f39d397 CM |
2196 | unsigned long ptr = (unsigned long)inode_item; |
2197 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 2198 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2199 | } |
2200 | ||
0b86a832 CM |
2201 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
2202 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 2203 | |
0b86a832 | 2204 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
2205 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
2206 | chunk_tree, 64); | |
2207 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
2208 | chunk_objectid, 64); | |
2209 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
2210 | chunk_offset, 64); | |
0b86a832 CM |
2211 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
2212 | ||
e17cade2 CM |
2213 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
2214 | { | |
2215 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
2216 | return (u8 *)((unsigned long)dev + ptr); | |
2217 | } | |
2218 | ||
5d4f98a2 YZ |
2219 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
2220 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
2221 | generation, 64); | |
2222 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 2223 | |
5d4f98a2 YZ |
2224 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
2225 | ||
2226 | ||
2227 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
2228 | ||
2229 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
2230 | struct btrfs_tree_block_info *item, | |
2231 | struct btrfs_disk_key *key) | |
2232 | { | |
2233 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
2234 | } | |
2235 | ||
2236 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
2237 | struct btrfs_tree_block_info *item, | |
2238 | struct btrfs_disk_key *key) | |
2239 | { | |
2240 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
2241 | } | |
e20d96d6 | 2242 | |
5d4f98a2 YZ |
2243 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
2244 | root, 64); | |
2245 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
2246 | objectid, 64); | |
2247 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
2248 | offset, 64); | |
2249 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
2250 | count, 32); | |
2251 | ||
2252 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
2253 | count, 32); | |
2254 | ||
2255 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
2256 | type, 8); | |
2257 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
2258 | offset, 64); | |
2259 | ||
2260 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
2261 | { | |
2262 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
2263 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
2264 | return sizeof(struct btrfs_extent_inline_ref); | |
2265 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
2266 | return sizeof(struct btrfs_shared_data_ref) + | |
2267 | sizeof(struct btrfs_extent_inline_ref); | |
2268 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
2269 | return sizeof(struct btrfs_extent_data_ref) + | |
2270 | offsetof(struct btrfs_extent_inline_ref, offset); | |
2271 | BUG(); | |
2272 | return 0; | |
2273 | } | |
2274 | ||
2275 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
2276 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
2277 | generation, 64); | |
2278 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
2279 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 2280 | |
5f39d397 CM |
2281 | /* struct btrfs_node */ |
2282 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 2283 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 2284 | |
5f39d397 | 2285 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 2286 | { |
5f39d397 CM |
2287 | unsigned long ptr; |
2288 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2289 | sizeof(struct btrfs_key_ptr) * nr; | |
2290 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
2291 | } |
2292 | ||
5f39d397 CM |
2293 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
2294 | int nr, u64 val) | |
cf27e1ee | 2295 | { |
5f39d397 CM |
2296 | unsigned long ptr; |
2297 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2298 | sizeof(struct btrfs_key_ptr) * nr; | |
2299 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
2300 | } |
2301 | ||
74493f7a CM |
2302 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
2303 | { | |
2304 | unsigned long ptr; | |
2305 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2306 | sizeof(struct btrfs_key_ptr) * nr; | |
2307 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
2308 | } | |
2309 | ||
2310 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
2311 | int nr, u64 val) | |
2312 | { | |
2313 | unsigned long ptr; | |
2314 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2315 | sizeof(struct btrfs_key_ptr) * nr; | |
2316 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
2317 | } | |
2318 | ||
810191ff | 2319 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 2320 | { |
5f39d397 CM |
2321 | return offsetof(struct btrfs_node, ptrs) + |
2322 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
2323 | } |
2324 | ||
e644d021 CM |
2325 | void btrfs_node_key(struct extent_buffer *eb, |
2326 | struct btrfs_disk_key *disk_key, int nr); | |
2327 | ||
5f39d397 CM |
2328 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
2329 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 2330 | { |
5f39d397 CM |
2331 | unsigned long ptr; |
2332 | ptr = btrfs_node_key_ptr_offset(nr); | |
2333 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
2334 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
2335 | } |
2336 | ||
5f39d397 CM |
2337 | /* struct btrfs_item */ |
2338 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
2339 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 2340 | |
5f39d397 | 2341 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 2342 | { |
5f39d397 CM |
2343 | return offsetof(struct btrfs_leaf, items) + |
2344 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
2345 | } |
2346 | ||
5f39d397 CM |
2347 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
2348 | int nr) | |
0783fcfc | 2349 | { |
5f39d397 | 2350 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
2351 | } |
2352 | ||
5f39d397 CM |
2353 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
2354 | struct btrfs_item *item) | |
0783fcfc | 2355 | { |
5f39d397 | 2356 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
2357 | } |
2358 | ||
5f39d397 | 2359 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2360 | { |
5f39d397 | 2361 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
2362 | } |
2363 | ||
5f39d397 | 2364 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2365 | { |
5f39d397 | 2366 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
2367 | } |
2368 | ||
5f39d397 | 2369 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2370 | { |
5f39d397 | 2371 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
2372 | } |
2373 | ||
5f39d397 CM |
2374 | static inline void btrfs_item_key(struct extent_buffer *eb, |
2375 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2376 | { |
5f39d397 CM |
2377 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
2378 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
2379 | } |
2380 | ||
5f39d397 CM |
2381 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
2382 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2383 | { |
5f39d397 CM |
2384 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
2385 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
2386 | } |
2387 | ||
e02119d5 CM |
2388 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
2389 | ||
0660b5af CM |
2390 | /* |
2391 | * struct btrfs_root_ref | |
2392 | */ | |
2393 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
2394 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
2395 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
2396 | ||
5f39d397 | 2397 | /* struct btrfs_dir_item */ |
5103e947 | 2398 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
2399 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
2400 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 2401 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 2402 | |
5f39d397 CM |
2403 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
2404 | struct btrfs_dir_item *item, | |
2405 | struct btrfs_disk_key *key) | |
1d4f6404 | 2406 | { |
5f39d397 | 2407 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
2408 | } |
2409 | ||
5f39d397 CM |
2410 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
2411 | struct btrfs_dir_item *item, | |
2412 | struct btrfs_disk_key *key) | |
a8a2ee0c | 2413 | { |
5f39d397 | 2414 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
2415 | } |
2416 | ||
0af3d00b JB |
2417 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
2418 | num_entries, 64); | |
2419 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
2420 | num_bitmaps, 64); | |
2421 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
2422 | generation, 64); | |
2423 | ||
2424 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
2425 | struct btrfs_free_space_header *h, | |
2426 | struct btrfs_disk_key *key) | |
2427 | { | |
2428 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2429 | } | |
2430 | ||
2431 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
2432 | struct btrfs_free_space_header *h, | |
2433 | struct btrfs_disk_key *key) | |
2434 | { | |
2435 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2436 | } | |
2437 | ||
5f39d397 CM |
2438 | /* struct btrfs_disk_key */ |
2439 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2440 | objectid, 64); | |
2441 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2442 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2443 | |
e2fa7227 CM |
2444 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
2445 | struct btrfs_disk_key *disk) | |
2446 | { | |
2447 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2448 | cpu->type = disk->type; |
e2fa7227 CM |
2449 | cpu->objectid = le64_to_cpu(disk->objectid); |
2450 | } | |
2451 | ||
2452 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
2453 | struct btrfs_key *cpu) | |
2454 | { | |
2455 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2456 | disk->type = cpu->type; |
e2fa7227 CM |
2457 | disk->objectid = cpu_to_le64(cpu->objectid); |
2458 | } | |
2459 | ||
5f39d397 CM |
2460 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
2461 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2462 | { |
5f39d397 CM |
2463 | struct btrfs_disk_key disk_key; |
2464 | btrfs_node_key(eb, &disk_key, nr); | |
2465 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2466 | } |
2467 | ||
5f39d397 CM |
2468 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
2469 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2470 | { |
5f39d397 CM |
2471 | struct btrfs_disk_key disk_key; |
2472 | btrfs_item_key(eb, &disk_key, nr); | |
2473 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2474 | } |
2475 | ||
5f39d397 CM |
2476 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
2477 | struct btrfs_dir_item *item, | |
2478 | struct btrfs_key *key) | |
4d775673 | 2479 | { |
5f39d397 CM |
2480 | struct btrfs_disk_key disk_key; |
2481 | btrfs_dir_item_key(eb, item, &disk_key); | |
2482 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2483 | } |
2484 | ||
58176a96 | 2485 | |
5f39d397 | 2486 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 2487 | { |
5f39d397 | 2488 | return key->type; |
3768f368 CM |
2489 | } |
2490 | ||
5f39d397 | 2491 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2492 | { |
5f39d397 | 2493 | key->type = val; |
3768f368 CM |
2494 | } |
2495 | ||
5f39d397 | 2496 | /* struct btrfs_header */ |
db94535d | 2497 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2498 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2499 | generation, 64); | |
2500 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2501 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2502 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2503 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 2504 | |
63b10fc4 CM |
2505 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
2506 | { | |
2507 | return (btrfs_header_flags(eb) & flag) == flag; | |
2508 | } | |
2509 | ||
2510 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2511 | { | |
2512 | u64 flags = btrfs_header_flags(eb); | |
2513 | btrfs_set_header_flags(eb, flags | flag); | |
2514 | return (flags & flag) == flag; | |
2515 | } | |
2516 | ||
2517 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2518 | { | |
2519 | u64 flags = btrfs_header_flags(eb); | |
2520 | btrfs_set_header_flags(eb, flags & ~flag); | |
2521 | return (flags & flag) == flag; | |
2522 | } | |
2523 | ||
5d4f98a2 YZ |
2524 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2525 | { | |
2526 | u64 flags = btrfs_header_flags(eb); | |
2527 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2528 | } | |
2529 | ||
2530 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2531 | int rev) | |
2532 | { | |
2533 | u64 flags = btrfs_header_flags(eb); | |
2534 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2535 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2536 | btrfs_set_header_flags(eb, flags); | |
2537 | } | |
2538 | ||
5f39d397 | 2539 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 2540 | { |
5f39d397 CM |
2541 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
2542 | return (u8 *)ptr; | |
0f7d52f4 CM |
2543 | } |
2544 | ||
e17cade2 CM |
2545 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
2546 | { | |
2547 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
2548 | return (u8 *)ptr; | |
2549 | } | |
2550 | ||
5f39d397 | 2551 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2552 | { |
d397712b | 2553 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2554 | } |
2555 | ||
5f39d397 | 2556 | /* struct btrfs_root_item */ |
84234f3a YZ |
2557 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2558 | generation, 64); | |
5f39d397 | 2559 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2560 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2561 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2562 | |
84234f3a YZ |
2563 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2564 | generation, 64); | |
db94535d CM |
2565 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2566 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2567 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2568 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2569 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2570 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2571 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2572 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2573 | last_snapshot, 64); | |
8ea05e3a AB |
2574 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2575 | generation_v2, 64); | |
2576 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2577 | ctransid, 64); | |
2578 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2579 | otransid, 64); | |
2580 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2581 | stransid, 64); | |
2582 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2583 | rtransid, 64); | |
123abc88 | 2584 | |
b83cc969 LZ |
2585 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2586 | { | |
6ed3cf2c | 2587 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2588 | } |
2589 | ||
af31f5e5 CM |
2590 | /* struct btrfs_root_backup */ |
2591 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2592 | tree_root, 64); | |
2593 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2594 | tree_root_gen, 64); | |
2595 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2596 | tree_root_level, 8); | |
2597 | ||
2598 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2599 | chunk_root, 64); | |
2600 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2601 | chunk_root_gen, 64); | |
2602 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2603 | chunk_root_level, 8); | |
2604 | ||
2605 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2606 | extent_root, 64); | |
2607 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2608 | extent_root_gen, 64); | |
2609 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2610 | extent_root_level, 8); | |
2611 | ||
2612 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2613 | fs_root, 64); | |
2614 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2615 | fs_root_gen, 64); | |
2616 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2617 | fs_root_level, 8); | |
2618 | ||
2619 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2620 | dev_root, 64); | |
2621 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2622 | dev_root_gen, 64); | |
2623 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2624 | dev_root_level, 8); | |
2625 | ||
2626 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2627 | csum_root, 64); | |
2628 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2629 | csum_root_gen, 64); | |
2630 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2631 | csum_root_level, 8); | |
2632 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2633 | total_bytes, 64); | |
2634 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2635 | bytes_used, 64); | |
2636 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2637 | num_devices, 64); | |
2638 | ||
0940ebf6 ID |
2639 | /* struct btrfs_balance_item */ |
2640 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2641 | |
0940ebf6 ID |
2642 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2643 | struct btrfs_balance_item *bi, | |
2644 | struct btrfs_disk_balance_args *ba) | |
2645 | { | |
2646 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2647 | } | |
2648 | ||
2649 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2650 | struct btrfs_balance_item *bi, | |
2651 | struct btrfs_disk_balance_args *ba) | |
2652 | { | |
2653 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2654 | } | |
2655 | ||
2656 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2657 | struct btrfs_balance_item *bi, | |
2658 | struct btrfs_disk_balance_args *ba) | |
2659 | { | |
2660 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2661 | } | |
2662 | ||
2663 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2664 | struct btrfs_balance_item *bi, | |
2665 | struct btrfs_disk_balance_args *ba) | |
2666 | { | |
2667 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2668 | } | |
2669 | ||
2670 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2671 | struct btrfs_balance_item *bi, | |
2672 | struct btrfs_disk_balance_args *ba) | |
2673 | { | |
2674 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2675 | } | |
2676 | ||
2677 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2678 | struct btrfs_balance_item *bi, | |
2679 | struct btrfs_disk_balance_args *ba) | |
2680 | { | |
2681 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2682 | } | |
2683 | ||
2684 | static inline void | |
2685 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2686 | struct btrfs_disk_balance_args *disk) | |
2687 | { | |
2688 | memset(cpu, 0, sizeof(*cpu)); | |
2689 | ||
2690 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2691 | cpu->usage = le64_to_cpu(disk->usage); | |
2692 | cpu->devid = le64_to_cpu(disk->devid); | |
2693 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2694 | cpu->pend = le64_to_cpu(disk->pend); | |
2695 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2696 | cpu->vend = le64_to_cpu(disk->vend); | |
2697 | cpu->target = le64_to_cpu(disk->target); | |
2698 | cpu->flags = le64_to_cpu(disk->flags); | |
2699 | } | |
2700 | ||
2701 | static inline void | |
2702 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2703 | struct btrfs_balance_args *cpu) | |
2704 | { | |
2705 | memset(disk, 0, sizeof(*disk)); | |
2706 | ||
2707 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2708 | disk->usage = cpu_to_le64(cpu->usage); | |
2709 | disk->devid = cpu_to_le64(cpu->devid); | |
2710 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2711 | disk->pend = cpu_to_le64(cpu->pend); | |
2712 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2713 | disk->vend = cpu_to_le64(cpu->vend); | |
2714 | disk->target = cpu_to_le64(cpu->target); | |
2715 | disk->flags = cpu_to_le64(cpu->flags); | |
2716 | } | |
2717 | ||
2718 | /* struct btrfs_super_block */ | |
db94535d | 2719 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2720 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2721 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2722 | generation, 64); | |
2723 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2724 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2725 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2726 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2727 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2728 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2729 | root_level, 8); | |
0b86a832 CM |
2730 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2731 | chunk_root, 64); | |
2732 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2733 | chunk_root_level, 8); |
2734 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2735 | log_root, 64); | |
c3027eb5 CM |
2736 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2737 | log_root_transid, 64); | |
e02119d5 CM |
2738 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2739 | log_root_level, 8); | |
db94535d CM |
2740 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2741 | total_bytes, 64); | |
2742 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2743 | bytes_used, 64); | |
5f39d397 CM |
2744 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2745 | sectorsize, 32); | |
2746 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2747 | nodesize, 32); | |
2748 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
2749 | leafsize, 32); | |
87ee04eb CM |
2750 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2751 | stripesize, 32); | |
5f39d397 CM |
2752 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2753 | root_dir_objectid, 64); | |
8a4b83cc CM |
2754 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2755 | num_devices, 64); | |
f2b636e8 JB |
2756 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2757 | compat_flags, 64); | |
2758 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2759 | compat_ro_flags, 64); |
f2b636e8 JB |
2760 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2761 | incompat_flags, 64); | |
607d432d JB |
2762 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2763 | csum_type, 16); | |
0af3d00b JB |
2764 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2765 | cache_generation, 64); | |
607d432d JB |
2766 | |
2767 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2768 | { | |
2769 | int t = btrfs_super_csum_type(s); | |
2770 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
2771 | return btrfs_csum_sizes[t]; | |
2772 | } | |
2e635a27 | 2773 | |
5f39d397 | 2774 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2775 | { |
5f39d397 | 2776 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2777 | } |
2778 | ||
5f39d397 CM |
2779 | /* struct btrfs_file_extent_item */ |
2780 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 2781 | |
d397712b CM |
2782 | static inline unsigned long |
2783 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2784 | { |
5f39d397 | 2785 | unsigned long offset = (unsigned long)e; |
db94535d | 2786 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 2787 | return offset; |
236454df CM |
2788 | } |
2789 | ||
2790 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2791 | { | |
db94535d | 2792 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
2793 | } |
2794 | ||
db94535d CM |
2795 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2796 | disk_bytenr, 64); | |
5f39d397 CM |
2797 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2798 | generation, 64); | |
db94535d CM |
2799 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2800 | disk_num_bytes, 64); | |
5f39d397 CM |
2801 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2802 | offset, 64); | |
db94535d CM |
2803 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2804 | num_bytes, 64); | |
c8b97818 CM |
2805 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2806 | ram_bytes, 64); | |
2807 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2808 | compression, 8); | |
2809 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2810 | encryption, 8); | |
2811 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2812 | other_encoding, 16); | |
2813 | ||
2814 | /* this returns the number of file bytes represented by the inline item. | |
2815 | * If an item is compressed, this is the uncompressed size | |
2816 | */ | |
2817 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2818 | struct btrfs_file_extent_item *e) | |
2819 | { | |
2820 | return btrfs_file_extent_ram_bytes(eb, e); | |
2821 | } | |
2822 | ||
2823 | /* | |
2824 | * this returns the number of bytes used by the item on disk, minus the | |
2825 | * size of any extent headers. If a file is compressed on disk, this is | |
2826 | * the compressed size | |
2827 | */ | |
2828 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2829 | struct btrfs_item *e) | |
2830 | { | |
2831 | unsigned long offset; | |
2832 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
2833 | return btrfs_item_size(eb, e) - offset; | |
2834 | } | |
9f5fae2f | 2835 | |
733f4fbb SB |
2836 | /* btrfs_dev_stats_item */ |
2837 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
2838 | struct btrfs_dev_stats_item *ptr, | |
2839 | int index) | |
2840 | { | |
2841 | u64 val; | |
2842 | ||
2843 | read_extent_buffer(eb, &val, | |
2844 | offsetof(struct btrfs_dev_stats_item, values) + | |
2845 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2846 | sizeof(val)); | |
2847 | return val; | |
2848 | } | |
2849 | ||
2850 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2851 | struct btrfs_dev_stats_item *ptr, | |
2852 | int index, u64 val) | |
2853 | { | |
2854 | write_extent_buffer(eb, &val, | |
2855 | offsetof(struct btrfs_dev_stats_item, values) + | |
2856 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2857 | sizeof(val)); | |
2858 | } | |
2859 | ||
630dc772 AJ |
2860 | /* btrfs_qgroup_status_item */ |
2861 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2862 | generation, 64); | |
2863 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2864 | version, 64); | |
2865 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2866 | flags, 64); | |
2867 | BTRFS_SETGET_FUNCS(qgroup_status_scan, struct btrfs_qgroup_status_item, | |
2868 | scan, 64); | |
2869 | ||
2870 | /* btrfs_qgroup_info_item */ | |
2871 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2872 | generation, 64); | |
2873 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2874 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2875 | rfer_cmpr, 64); | |
2876 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2877 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2878 | excl_cmpr, 64); | |
2879 | ||
2880 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2881 | struct btrfs_qgroup_info_item, generation, 64); | |
2882 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2883 | rfer, 64); | |
2884 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2885 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2886 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2887 | excl, 64); | |
2888 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2889 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2890 | ||
2891 | /* btrfs_qgroup_limit_item */ | |
2892 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2893 | flags, 64); | |
2894 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2895 | max_rfer, 64); | |
2896 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2897 | max_excl, 64); | |
2898 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2899 | rsv_rfer, 64); | |
2900 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2901 | rsv_excl, 64); | |
2902 | ||
a2bff640 SB |
2903 | /* btrfs_dev_replace_item */ |
2904 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2905 | struct btrfs_dev_replace_item, src_devid, 64); | |
2906 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2907 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2908 | 64); | |
2909 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2910 | replace_state, 64); | |
2911 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2912 | time_started, 64); | |
2913 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2914 | time_stopped, 64); | |
2915 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2916 | num_write_errors, 64); | |
2917 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2918 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2919 | 64); | |
2920 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2921 | cursor_left, 64); | |
2922 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2923 | cursor_right, 64); | |
2924 | ||
2925 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2926 | struct btrfs_dev_replace_item, src_devid, 64); | |
2927 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2928 | struct btrfs_dev_replace_item, | |
2929 | cont_reading_from_srcdev_mode, 64); | |
2930 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2931 | struct btrfs_dev_replace_item, replace_state, 64); | |
2932 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2933 | struct btrfs_dev_replace_item, time_started, 64); | |
2934 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2935 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2936 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2937 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2938 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2939 | struct btrfs_dev_replace_item, | |
2940 | num_uncorrectable_read_errors, 64); | |
2941 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2942 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2943 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2944 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2945 | ||
815745cf | 2946 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
e20d96d6 CM |
2947 | { |
2948 | return sb->s_fs_info; | |
2949 | } | |
2950 | ||
d397712b CM |
2951 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
2952 | { | |
db94535d CM |
2953 | if (level == 0) |
2954 | return root->leafsize; | |
2955 | return root->nodesize; | |
2956 | } | |
2957 | ||
4beb1b8b CM |
2958 | /* helper function to cast into the data area of the leaf. */ |
2959 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2960 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2961 | btrfs_item_offset_nr(leaf, slot))) |
2962 | ||
2963 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2964 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2965 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2966 | |
2b1f55b0 CM |
2967 | static inline struct dentry *fdentry(struct file *file) |
2968 | { | |
6da6abae | 2969 | return file->f_path.dentry; |
6da6abae CM |
2970 | } |
2971 | ||
67377734 JB |
2972 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2973 | { | |
2974 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2975 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2976 | } | |
2977 | ||
3b16a4e3 JB |
2978 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2979 | { | |
2980 | return mapping_gfp_mask(mapping) & ~__GFP_FS; | |
2981 | } | |
2982 | ||
b18c6685 | 2983 | /* extent-tree.c */ |
16cdcec7 | 2984 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 2985 | unsigned num_items) |
16cdcec7 MX |
2986 | { |
2987 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
2988 | 3 * num_items; | |
07127184 JB |
2989 | } |
2990 | ||
2991 | /* | |
2992 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2993 | * COW. | |
2994 | */ | |
2995 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, | |
2996 | unsigned num_items) | |
2997 | { | |
2998 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
2999 | num_items; | |
16cdcec7 MX |
3000 | } |
3001 | ||
fa9c0d79 | 3002 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
3003 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
3004 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 3005 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
3006 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
3007 | struct btrfs_root *root, u64 bytenr, | |
3008 | u64 num_bytes, u64 *refs, u64 *flags); | |
11833d66 YZ |
3009 | int btrfs_pin_extent(struct btrfs_root *root, |
3010 | u64 bytenr, u64 num, int reserved); | |
dcfac415 | 3011 | int btrfs_pin_extent_for_log_replay(struct btrfs_root *root, |
e688b725 | 3012 | u64 bytenr, u64 num_bytes); |
80ff3856 | 3013 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
3014 | struct btrfs_root *root, |
3015 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
3016 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
3017 | struct btrfs_fs_info *info, | |
3018 | u64 bytenr); | |
5d4f98a2 | 3019 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
d2fb3437 YZ |
3020 | u64 btrfs_find_block_group(struct btrfs_root *root, |
3021 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 3022 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
3023 | struct btrfs_root *root, u32 blocksize, |
3024 | u64 parent, u64 root_objectid, | |
3025 | struct btrfs_disk_key *key, int level, | |
5581a51a | 3026 | u64 hint, u64 empty_size); |
f0486c68 YZ |
3027 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
3028 | struct btrfs_root *root, | |
3029 | struct extent_buffer *buf, | |
5581a51a | 3030 | u64 parent, int last_ref); |
65b51a00 CM |
3031 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
3032 | struct btrfs_root *root, | |
4008c04a CM |
3033 | u64 bytenr, u32 blocksize, |
3034 | int level); | |
5d4f98a2 YZ |
3035 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
3036 | struct btrfs_root *root, | |
3037 | u64 root_objectid, u64 owner, | |
3038 | u64 offset, struct btrfs_key *ins); | |
3039 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, | |
3040 | struct btrfs_root *root, | |
3041 | u64 root_objectid, u64 owner, u64 offset, | |
3042 | struct btrfs_key *ins); | |
e6dcd2dc CM |
3043 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
3044 | struct btrfs_root *root, | |
3045 | u64 num_bytes, u64 min_alloc_size, | |
3046 | u64 empty_size, u64 hint_byte, | |
81c9ad23 | 3047 | struct btrfs_key *ins, u64 data); |
e089f05c | 3048 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 3049 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 | 3050 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 3051 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 YZ |
3052 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
3053 | struct btrfs_root *root, | |
3054 | u64 bytenr, u64 num_bytes, u64 flags, | |
3055 | int is_data); | |
31840ae1 ZY |
3056 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
3057 | struct btrfs_root *root, | |
66d7e7f0 AJ |
3058 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
3059 | u64 owner, u64 offset, int for_cow); | |
5d4f98a2 | 3060 | |
65b51a00 | 3061 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
e688b725 CM |
3062 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
3063 | u64 start, u64 len); | |
143bede5 JM |
3064 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
3065 | struct btrfs_root *root); | |
ccd467d6 | 3066 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 3067 | struct btrfs_root *root); |
b18c6685 | 3068 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
3069 | struct btrfs_root *root, |
3070 | u64 bytenr, u64 num_bytes, u64 parent, | |
66d7e7f0 | 3071 | u64 root_objectid, u64 owner, u64 offset, int for_cow); |
5d4f98a2 | 3072 | |
9078a3e1 CM |
3073 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
3074 | struct btrfs_root *root); | |
d2fb3437 | 3075 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
3076 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
3077 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 3078 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
3079 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
3080 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 3081 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 3082 | u64 size); |
1a40e23b ZY |
3083 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
3084 | struct btrfs_root *root, u64 group_start); | |
ea658bad JB |
3085 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
3086 | struct btrfs_root *root); | |
2b82032c | 3087 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
6d07bcec | 3088 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
4184ea7f | 3089 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
3090 | |
3091 | enum btrfs_reserve_flush_enum { | |
3092 | /* If we are in the transaction, we can't flush anything.*/ | |
3093 | BTRFS_RESERVE_NO_FLUSH, | |
3094 | /* | |
3095 | * Flushing delalloc may cause deadlock somewhere, in this | |
3096 | * case, use FLUSH LIMIT | |
3097 | */ | |
3098 | BTRFS_RESERVE_FLUSH_LIMIT, | |
3099 | BTRFS_RESERVE_FLUSH_ALL, | |
3100 | }; | |
3101 | ||
0ca1f7ce YZ |
3102 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
3103 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); | |
a22285a6 YZ |
3104 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
3105 | struct btrfs_root *root); | |
d68fc57b YZ |
3106 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
3107 | struct inode *inode); | |
3108 | void btrfs_orphan_release_metadata(struct inode *inode); | |
d5c12070 MX |
3109 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
3110 | struct btrfs_block_rsv *rsv, | |
3111 | int nitems, | |
3112 | u64 *qgroup_reserved); | |
3113 | void btrfs_subvolume_release_metadata(struct btrfs_root *root, | |
3114 | struct btrfs_block_rsv *rsv, | |
3115 | u64 qgroup_reserved); | |
0ca1f7ce YZ |
3116 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
3117 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
3118 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); | |
3119 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); | |
66d8f3dd MX |
3120 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
3121 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, | |
3122 | unsigned short type); | |
f0486c68 YZ |
3123 | void btrfs_free_block_rsv(struct btrfs_root *root, |
3124 | struct btrfs_block_rsv *rsv); | |
4a92b1b8 | 3125 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
3126 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
3127 | enum btrfs_reserve_flush_enum flush); | |
4a92b1b8 | 3128 | int btrfs_block_rsv_check(struct btrfs_root *root, |
36ba022a JB |
3129 | struct btrfs_block_rsv *block_rsv, int min_factor); |
3130 | int btrfs_block_rsv_refill(struct btrfs_root *root, | |
08e007d2 MX |
3131 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
3132 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 YZ |
3133 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
3134 | struct btrfs_block_rsv *dst_rsv, | |
3135 | u64 num_bytes); | |
3136 | void btrfs_block_rsv_release(struct btrfs_root *root, | |
3137 | struct btrfs_block_rsv *block_rsv, | |
3138 | u64 num_bytes); | |
3139 | int btrfs_set_block_group_ro(struct btrfs_root *root, | |
3140 | struct btrfs_block_group_cache *cache); | |
143bede5 JM |
3141 | void btrfs_set_block_group_rw(struct btrfs_root *root, |
3142 | struct btrfs_block_group_cache *cache); | |
0af3d00b | 3143 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 3144 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 3145 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
3146 | u64 start, u64 end); | |
3147 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, | |
5378e607 | 3148 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca CM |
3149 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
3150 | struct btrfs_root *root, u64 type); | |
f7039b1d | 3151 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 3152 | |
c59021f8 | 3153 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
3154 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
3155 | struct btrfs_fs_info *fs_info); | |
31e50229 | 3156 | int __get_raid_index(u64 flags); |
dee26a9f | 3157 | /* ctree.c */ |
5d4f98a2 YZ |
3158 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
3159 | int level, int *slot); | |
3160 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
3161 | int btrfs_previous_item(struct btrfs_root *root, |
3162 | struct btrfs_path *path, u64 min_objectid, | |
3163 | int type); | |
143bede5 JM |
3164 | void btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
3165 | struct btrfs_root *root, struct btrfs_path *path, | |
3166 | struct btrfs_key *new_key); | |
925baedd CM |
3167 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
3168 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 3169 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 3170 | struct btrfs_key *key, int lowest_level, |
de78b51a | 3171 | u64 min_trans); |
3f157a2f | 3172 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
e02119d5 | 3173 | struct btrfs_key *max_key, |
de78b51a | 3174 | struct btrfs_path *path, |
3f157a2f | 3175 | u64 min_trans); |
7069830a AB |
3176 | enum btrfs_compare_tree_result { |
3177 | BTRFS_COMPARE_TREE_NEW, | |
3178 | BTRFS_COMPARE_TREE_DELETED, | |
3179 | BTRFS_COMPARE_TREE_CHANGED, | |
3180 | }; | |
3181 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, | |
3182 | struct btrfs_root *right_root, | |
3183 | struct btrfs_path *left_path, | |
3184 | struct btrfs_path *right_path, | |
3185 | struct btrfs_key *key, | |
3186 | enum btrfs_compare_tree_result result, | |
3187 | void *ctx); | |
3188 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
3189 | struct btrfs_root *right_root, | |
3190 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
3191 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
3192 | struct btrfs_root *root, struct extent_buffer *buf, | |
3193 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 3194 | struct extent_buffer **cow_ret); |
be20aa9d CM |
3195 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
3196 | struct btrfs_root *root, | |
3197 | struct extent_buffer *buf, | |
3198 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
3199 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
3200 | struct extent_buffer *buf); | |
143bede5 JM |
3201 | void btrfs_extend_item(struct btrfs_trans_handle *trans, |
3202 | struct btrfs_root *root, struct btrfs_path *path, | |
3203 | u32 data_size); | |
3204 | void btrfs_truncate_item(struct btrfs_trans_handle *trans, | |
3205 | struct btrfs_root *root, | |
3206 | struct btrfs_path *path, | |
3207 | u32 new_size, int from_end); | |
459931ec CM |
3208 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
3209 | struct btrfs_root *root, | |
3210 | struct btrfs_path *path, | |
3211 | struct btrfs_key *new_key, | |
3212 | unsigned long split_offset); | |
ad48fd75 YZ |
3213 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
3214 | struct btrfs_root *root, | |
3215 | struct btrfs_path *path, | |
3216 | struct btrfs_key *new_key); | |
e089f05c CM |
3217 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
3218 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
3219 | ins_len, int cow); | |
5d9e75c4 JS |
3220 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
3221 | struct btrfs_path *p, u64 time_seq); | |
2f38b3e1 AJ |
3222 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
3223 | struct btrfs_key *key, struct btrfs_path *p, | |
3224 | int find_higher, int return_any); | |
6702ed49 | 3225 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 3226 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 3227 | int start_slot, u64 *last_ret, |
a6b6e75e | 3228 | struct btrfs_key *progress); |
b3b4aa74 | 3229 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
3230 | struct btrfs_path *btrfs_alloc_path(void); |
3231 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 3232 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 3233 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 3234 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
3235 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
3236 | ||
85e21bac CM |
3237 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3238 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
3239 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
3240 | struct btrfs_root *root, | |
3241 | struct btrfs_path *path) | |
3242 | { | |
3243 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
3244 | } | |
3245 | ||
143bede5 JM |
3246 | void setup_items_for_insert(struct btrfs_trans_handle *trans, |
3247 | struct btrfs_root *root, struct btrfs_path *path, | |
3248 | struct btrfs_key *cpu_key, u32 *data_size, | |
3249 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
3250 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
3251 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
3252 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
3253 | struct btrfs_root *root, | |
3254 | struct btrfs_path *path, | |
3255 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
3256 | ||
3257 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
3258 | struct btrfs_root *root, | |
3259 | struct btrfs_path *path, | |
3260 | struct btrfs_key *key, | |
3261 | u32 data_size) | |
3262 | { | |
3263 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
3264 | } | |
3265 | ||
234b63a0 | 3266 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
70c8a91c JB |
3267 | int btrfs_next_leaf_write(struct btrfs_trans_handle *trans, |
3268 | struct btrfs_root *root, struct btrfs_path *path, | |
3269 | int del); | |
3d7806ec JS |
3270 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
3271 | u64 time_seq); | |
1c8f52a5 AB |
3272 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
3273 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
3274 | { |
3275 | ++p->slots[0]; | |
3276 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 3277 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
3278 | return 0; |
3279 | } | |
1c8f52a5 AB |
3280 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
3281 | { | |
3282 | return btrfs_next_old_item(root, p, 0); | |
3283 | } | |
7bb86316 | 3284 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 3285 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
2c536799 JM |
3286 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
3287 | struct btrfs_block_rsv *block_rsv, | |
3288 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
3289 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
3290 | struct btrfs_root *root, | |
3291 | struct extent_buffer *node, | |
3292 | struct extent_buffer *parent); | |
7841cb28 DS |
3293 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
3294 | { | |
3295 | /* | |
3296 | * Get synced with close_ctree() | |
3297 | */ | |
3298 | smp_mb(); | |
3299 | return fs_info->closing; | |
3300 | } | |
6c41761f DS |
3301 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
3302 | { | |
837d5b6e | 3303 | kfree(fs_info->balance_ctl); |
6c41761f DS |
3304 | kfree(fs_info->delayed_root); |
3305 | kfree(fs_info->extent_root); | |
3306 | kfree(fs_info->tree_root); | |
3307 | kfree(fs_info->chunk_root); | |
3308 | kfree(fs_info->dev_root); | |
3309 | kfree(fs_info->csum_root); | |
bcef60f2 | 3310 | kfree(fs_info->quota_root); |
6c41761f DS |
3311 | kfree(fs_info->super_copy); |
3312 | kfree(fs_info->super_for_commit); | |
3313 | kfree(fs_info); | |
3314 | } | |
7841cb28 | 3315 | |
097b8a7c JS |
3316 | /* tree mod log functions from ctree.c */ |
3317 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3318 | struct seq_list *elem); | |
3319 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3320 | struct seq_list *elem); | |
3321 | static inline u64 btrfs_inc_tree_mod_seq(struct btrfs_fs_info *fs_info) | |
3322 | { | |
3323 | return atomic_inc_return(&fs_info->tree_mod_seq); | |
3324 | } | |
5b6602e7 | 3325 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 3326 | |
dee26a9f | 3327 | /* root-item.c */ |
ea9e8b11 | 3328 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
3329 | struct btrfs_path *path, |
3330 | u64 root_id, u64 ref_id); | |
0660b5af CM |
3331 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
3332 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
3333 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
3334 | const char *name, int name_len); | |
3335 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
3336 | struct btrfs_root *tree_root, | |
3337 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 3338 | const char *name, int name_len); |
e089f05c CM |
3339 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3340 | struct btrfs_key *key); | |
3341 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
3342 | *root, struct btrfs_key *key, struct btrfs_root_item | |
3343 | *item); | |
b45a9d8b JM |
3344 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
3345 | struct btrfs_root *root, | |
3346 | struct btrfs_key *key, | |
3347 | struct btrfs_root_item *item); | |
8ea05e3a AB |
3348 | void btrfs_read_root_item(struct btrfs_root *root, |
3349 | struct extent_buffer *eb, int slot, | |
3350 | struct btrfs_root_item *item); | |
e089f05c CM |
3351 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct |
3352 | btrfs_root_item *item, struct btrfs_key *key); | |
5d4f98a2 | 3353 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid); |
76dda93c | 3354 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
3355 | void btrfs_set_root_node(struct btrfs_root_item *item, |
3356 | struct extent_buffer *node); | |
08fe4db1 | 3357 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
3358 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
3359 | struct btrfs_root *root); | |
08fe4db1 | 3360 | |
dee26a9f | 3361 | /* dir-item.c */ |
9c52057c CM |
3362 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
3363 | const char *name, int name_len); | |
d397712b CM |
3364 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
3365 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 3366 | int name_len, struct inode *dir, |
aec7477b | 3367 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3368 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3369 | struct btrfs_root *root, | |
3370 | struct btrfs_path *path, u64 dir, | |
3371 | const char *name, int name_len, | |
3372 | int mod); | |
3373 | struct btrfs_dir_item * | |
3374 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3375 | struct btrfs_root *root, | |
3376 | struct btrfs_path *path, u64 dir, | |
3377 | u64 objectid, const char *name, int name_len, | |
3378 | int mod); | |
4df27c4d YZ |
3379 | struct btrfs_dir_item * |
3380 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3381 | struct btrfs_path *path, u64 dirid, | |
3382 | const char *name, int name_len); | |
7e38180e CM |
3383 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
3384 | struct btrfs_path *path, | |
7f5c1516 | 3385 | const char *name, int name_len); |
7e38180e CM |
3386 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3387 | struct btrfs_root *root, | |
3388 | struct btrfs_path *path, | |
3389 | struct btrfs_dir_item *di); | |
5103e947 | 3390 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3391 | struct btrfs_root *root, |
3392 | struct btrfs_path *path, u64 objectid, | |
3393 | const char *name, u16 name_len, | |
3394 | const void *data, u16 data_len); | |
5103e947 JB |
3395 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3396 | struct btrfs_root *root, | |
3397 | struct btrfs_path *path, u64 dir, | |
3398 | const char *name, u16 name_len, | |
3399 | int mod); | |
22a94d44 JB |
3400 | int verify_dir_item(struct btrfs_root *root, |
3401 | struct extent_buffer *leaf, | |
3402 | struct btrfs_dir_item *dir_item); | |
7b128766 JB |
3403 | |
3404 | /* orphan.c */ | |
3405 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3406 | struct btrfs_root *root, u64 offset); | |
3407 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3408 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3409 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3410 | |
dee26a9f | 3411 | /* inode-item.c */ |
3954401f CM |
3412 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3413 | struct btrfs_root *root, | |
3414 | const char *name, int name_len, | |
aec7477b | 3415 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3416 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3417 | struct btrfs_root *root, | |
3418 | const char *name, int name_len, | |
aec7477b | 3419 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
f186373f MF |
3420 | int btrfs_get_inode_ref_index(struct btrfs_trans_handle *trans, |
3421 | struct btrfs_root *root, | |
3422 | struct btrfs_path *path, | |
3423 | const char *name, int name_len, | |
3424 | u64 inode_objectid, u64 ref_objectid, int mod, | |
3425 | u64 *ret_index); | |
5f39d397 CM |
3426 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3427 | struct btrfs_root *root, | |
3428 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3429 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3430 | *root, struct btrfs_path *path, |
3431 | struct btrfs_key *location, int mod); | |
dee26a9f | 3432 | |
f186373f MF |
3433 | struct btrfs_inode_extref * |
3434 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3435 | struct btrfs_root *root, | |
3436 | struct btrfs_path *path, | |
3437 | const char *name, int name_len, | |
3438 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3439 | int cow); | |
3440 | ||
3441 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, | |
3442 | u64 ref_objectid, const char *name, | |
3443 | int name_len, | |
3444 | struct btrfs_inode_extref **extref_ret); | |
3445 | ||
dee26a9f | 3446 | /* file-item.c */ |
459931ec CM |
3447 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
3448 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 3449 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3450 | struct bio *bio, u32 *dst); |
4b46fce2 | 3451 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
c329861d | 3452 | struct bio *bio, u64 logical_offset); |
b18c6685 | 3453 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3454 | struct btrfs_root *root, |
3455 | u64 objectid, u64 pos, | |
3456 | u64 disk_offset, u64 disk_num_bytes, | |
3457 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3458 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3459 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3460 | struct btrfs_root *root, | |
3461 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3462 | u64 bytenr, int mod); |
315a9850 | 3463 | u64 btrfs_file_extent_length(struct btrfs_path *path); |
065631f6 | 3464 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3465 | struct btrfs_root *root, |
e6dcd2dc | 3466 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 3467 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3468 | struct bio *bio, u64 file_start, int contig); |
b18c6685 CM |
3469 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
3470 | struct btrfs_root *root, | |
3471 | struct btrfs_path *path, | |
d20f7043 | 3472 | u64 bytenr, int cow); |
1de037a4 CM |
3473 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
3474 | struct btrfs_root *root, struct btrfs_path *path, | |
3475 | u64 isize); | |
a2de733c AJ |
3476 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3477 | struct list_head *list, int search_commit); | |
39279cc3 | 3478 | /* inode.c */ |
8ccf6f19 MX |
3479 | struct btrfs_delalloc_work { |
3480 | struct inode *inode; | |
3481 | int wait; | |
3482 | int delay_iput; | |
3483 | struct completion completion; | |
3484 | struct list_head list; | |
3485 | struct btrfs_work work; | |
3486 | }; | |
3487 | ||
3488 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, | |
3489 | int wait, int delay_iput); | |
3490 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); | |
3491 | ||
b2675157 JB |
3492 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
3493 | size_t pg_offset, u64 start, u64 len, | |
3494 | int create); | |
4881ee5a CM |
3495 | |
3496 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3497 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3498 | #define ClearPageChecked ClearPageFsMisc |
3499 | #define SetPageChecked SetPageFsMisc | |
3500 | #define PageChecked PageFsMisc | |
3501 | #endif | |
3502 | ||
b6973aa6 LZ |
3503 | /* This forces readahead on a given range of bytes in an inode */ |
3504 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3505 | struct file_ra_state *ra, struct file *file, | |
3506 | pgoff_t offset, unsigned long req_size) | |
3507 | { | |
3508 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3509 | } | |
3510 | ||
3de4586c CM |
3511 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
3512 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
3513 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3514 | struct btrfs_root *root, | |
3515 | struct inode *dir, struct inode *inode, | |
3516 | const char *name, int name_len); | |
3517 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
3518 | struct inode *parent_inode, struct inode *inode, | |
3519 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
3520 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3521 | struct btrfs_root *root, | |
3522 | struct inode *dir, u64 objectid, | |
3523 | const char *name, int name_len); | |
2aaa6655 JB |
3524 | int btrfs_truncate_page(struct inode *inode, loff_t from, loff_t len, |
3525 | int front); | |
e02119d5 CM |
3526 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3527 | struct btrfs_root *root, | |
3528 | struct inode *inode, u64 new_size, | |
3529 | u32 min_type); | |
3530 | ||
24bbcf04 | 3531 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
2ac55d41 JB |
3532 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
3533 | struct extent_state **cached_state); | |
f421950f CM |
3534 | int btrfs_writepages(struct address_space *mapping, |
3535 | struct writeback_control *wbc); | |
d2fb3437 | 3536 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
d82a6f1d | 3537 | struct btrfs_root *new_root, u64 new_dirid); |
64a16701 DW |
3538 | int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, |
3539 | size_t size, struct bio *bio, | |
3540 | unsigned long bio_flags); | |
c2ec175c | 3541 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 3542 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3543 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3544 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
22c44fe6 | 3545 | int btrfs_dirty_inode(struct inode *inode); |
39279cc3 CM |
3546 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3547 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3548 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3549 | int btrfs_init_cachep(void); |
3550 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3551 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3552 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3553 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 3554 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 3555 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
3556 | int create); |
3557 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
3558 | struct btrfs_root *root, | |
3559 | struct inode *inode); | |
be6aef60 JB |
3560 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3561 | struct btrfs_root *root, struct inode *inode); | |
5b21f2ed ZY |
3562 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
3563 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
66b4ffd1 | 3564 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3565 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3566 | struct btrfs_root *root); | |
a41ad394 | 3567 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3568 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
3569 | void btrfs_add_delayed_iput(struct inode *inode); |
3570 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
3571 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3572 | u64 start, u64 num_bytes, u64 min_size, | |
3573 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3574 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3575 | struct btrfs_trans_handle *trans, int mode, | |
3576 | u64 start, u64 num_bytes, u64 min_size, | |
3577 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 3578 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
3579 | |
3580 | /* ioctl.c */ | |
3581 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
6cbff00f CH |
3582 | void btrfs_update_iflags(struct inode *inode); |
3583 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
4cb5300b CM |
3584 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3585 | struct btrfs_ioctl_defrag_range_args *range, | |
3586 | u64 newer_than, unsigned long max_pages); | |
5af3e8cc SB |
3587 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3588 | struct btrfs_ioctl_space_info *space); | |
3589 | ||
39279cc3 | 3590 | /* file.c */ |
9247f317 MX |
3591 | int btrfs_auto_defrag_init(void); |
3592 | void btrfs_auto_defrag_exit(void); | |
4cb5300b CM |
3593 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
3594 | struct inode *inode); | |
3595 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
26176e7c | 3596 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3597 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
7014cdb4 JB |
3598 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
3599 | int skip_pinned); | |
5dc562c5 JB |
3600 | int btrfs_replace_extent_cache(struct inode *inode, struct extent_map *replace, |
3601 | u64 start, u64 end, int skip_pinned, | |
3602 | int modified); | |
828c0950 | 3603 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3604 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3605 | struct btrfs_root *root, struct inode *inode, | |
3606 | struct btrfs_path *path, u64 start, u64 end, | |
2aaa6655 | 3607 | u64 *drop_end, int drop_cache); |
5dc562c5 JB |
3608 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3609 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3610 | u64 end, int drop_cache); |
d899e052 | 3611 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 3612 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 3613 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
3614 | void btrfs_drop_pages(struct page **pages, size_t num_pages); |
3615 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, | |
3616 | struct page **pages, size_t num_pages, | |
3617 | loff_t pos, size_t write_bytes, | |
3618 | struct extent_state **cached); | |
6bf13c0c | 3619 | |
6702ed49 CM |
3620 | /* tree-defrag.c */ |
3621 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3622 | struct btrfs_root *root); |
58176a96 JB |
3623 | |
3624 | /* sysfs.c */ | |
3625 | int btrfs_init_sysfs(void); | |
3626 | void btrfs_exit_sysfs(void); | |
58176a96 | 3627 | |
5103e947 JB |
3628 | /* xattr.c */ |
3629 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3630 | |
edbd8d4e | 3631 | /* super.c */ |
edf24abe | 3632 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 3633 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 JP |
3634 | |
3635 | #ifdef CONFIG_PRINTK | |
3636 | __printf(2, 3) | |
4da35113 | 3637 | void btrfs_printk(struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 JP |
3638 | #else |
3639 | static inline __printf(2, 3) | |
3640 | void btrfs_printk(struct btrfs_fs_info *fs_info, const char *fmt, ...) | |
3641 | { | |
3642 | } | |
3643 | #endif | |
3644 | ||
3645 | __printf(5, 6) | |
acce952b | 3646 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3647 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3648 | |
533574c6 | 3649 | |
49b25e05 JM |
3650 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
3651 | struct btrfs_root *root, const char *function, | |
3652 | unsigned int line, int errno); | |
3653 | ||
2b0ce2c2 MH |
3654 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3655 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3656 | ||
3657 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3658 | u64 flag) | |
3659 | { | |
3660 | struct btrfs_super_block *disk_super; | |
3661 | u64 features; | |
3662 | ||
3663 | disk_super = fs_info->super_copy; | |
3664 | features = btrfs_super_incompat_flags(disk_super); | |
3665 | if (!(features & flag)) { | |
3666 | features |= flag; | |
3667 | btrfs_set_super_incompat_flags(disk_super, features); | |
3668 | } | |
3669 | } | |
3670 | ||
005d6427 DS |
3671 | /* |
3672 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3673 | * detected, that way the exact line number is reported. | |
3674 | */ | |
3675 | ||
49b25e05 JM |
3676 | #define btrfs_abort_transaction(trans, root, errno) \ |
3677 | do { \ | |
3678 | __btrfs_abort_transaction(trans, root, __func__, \ | |
3679 | __LINE__, errno); \ | |
3680 | } while (0) | |
acce952b | 3681 | |
3682 | #define btrfs_std_error(fs_info, errno) \ | |
3683 | do { \ | |
3684 | if ((errno)) \ | |
4da35113 JM |
3685 | __btrfs_std_error((fs_info), __func__, \ |
3686 | __LINE__, (errno), NULL); \ | |
3687 | } while (0) | |
3688 | ||
3689 | #define btrfs_error(fs_info, errno, fmt, args...) \ | |
3690 | do { \ | |
3691 | __btrfs_std_error((fs_info), __func__, __LINE__, \ | |
3692 | (errno), fmt, ##args); \ | |
acce952b | 3693 | } while (0) |
33268eaf | 3694 | |
533574c6 | 3695 | __printf(5, 6) |
8c342930 JM |
3696 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, |
3697 | unsigned int line, int errno, const char *fmt, ...); | |
3698 | ||
aa43a17c ES |
3699 | /* |
3700 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3701 | * will panic(). Otherwise we BUG() here. | |
3702 | */ | |
8c342930 JM |
3703 | #define btrfs_panic(fs_info, errno, fmt, args...) \ |
3704 | do { \ | |
aa43a17c ES |
3705 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ |
3706 | BUG(); \ | |
acce952b | 3707 | } while (0) |
33268eaf JB |
3708 | |
3709 | /* acl.c */ | |
0eda294d | 3710 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3711 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
f34f57a3 YZ |
3712 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3713 | struct inode *inode, struct inode *dir); | |
33268eaf | 3714 | int btrfs_acl_chmod(struct inode *inode); |
9b89d95a | 3715 | #else |
ed8f3737 | 3716 | #define btrfs_get_acl NULL |
9b89d95a LZ |
3717 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3718 | struct inode *inode, struct inode *dir) | |
3719 | { | |
3720 | return 0; | |
3721 | } | |
3722 | static inline int btrfs_acl_chmod(struct inode *inode) | |
3723 | { | |
3724 | return 0; | |
3725 | } | |
3726 | #endif | |
0f9dd46c | 3727 | |
5d4f98a2 YZ |
3728 | /* relocation.c */ |
3729 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
3730 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
3731 | struct btrfs_root *root); | |
3732 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3733 | struct btrfs_root *root); | |
3734 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3735 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
3fd0a558 YZ |
3736 | void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3737 | struct btrfs_root *root, struct extent_buffer *buf, | |
3738 | struct extent_buffer *cow); | |
3739 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, | |
3740 | struct btrfs_pending_snapshot *pending, | |
3741 | u64 *bytes_to_reserve); | |
49b25e05 | 3742 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3743 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3744 | |
3745 | /* scrub.c */ | |
aa1b8cd4 SB |
3746 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3747 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3748 | int readonly, int is_dev_replace); |
143bede5 JM |
3749 | void btrfs_scrub_pause(struct btrfs_root *root); |
3750 | void btrfs_scrub_pause_super(struct btrfs_root *root); | |
3751 | void btrfs_scrub_continue(struct btrfs_root *root); | |
3752 | void btrfs_scrub_continue_super(struct btrfs_root *root); | |
aa1b8cd4 SB |
3753 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
3754 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
3755 | struct btrfs_device *dev); | |
a2de733c AJ |
3756 | int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid); |
3757 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, | |
3758 | struct btrfs_scrub_progress *progress); | |
3759 | ||
7414a03f AJ |
3760 | /* reada.c */ |
3761 | struct reada_control { | |
3762 | struct btrfs_root *root; /* tree to prefetch */ | |
3763 | struct btrfs_key key_start; | |
3764 | struct btrfs_key key_end; /* exclusive */ | |
3765 | atomic_t elems; | |
3766 | struct kref refcnt; | |
3767 | wait_queue_head_t wait; | |
3768 | }; | |
3769 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3770 | struct btrfs_key *start, struct btrfs_key *end); | |
3771 | int btrfs_reada_wait(void *handle); | |
3772 | void btrfs_reada_detach(void *handle); | |
3773 | int btree_readahead_hook(struct btrfs_root *root, struct extent_buffer *eb, | |
3774 | u64 start, int err); | |
3775 | ||
bed92eae AJ |
3776 | /* qgroup.c */ |
3777 | struct qgroup_update { | |
64947ec0 | 3778 | struct list_head list; |
bed92eae AJ |
3779 | struct btrfs_delayed_ref_node *node; |
3780 | struct btrfs_delayed_extent_op *extent_op; | |
64947ec0 JS |
3781 | }; |
3782 | ||
bed92eae AJ |
3783 | int btrfs_quota_enable(struct btrfs_trans_handle *trans, |
3784 | struct btrfs_fs_info *fs_info); | |
3785 | int btrfs_quota_disable(struct btrfs_trans_handle *trans, | |
3786 | struct btrfs_fs_info *fs_info); | |
3787 | int btrfs_quota_rescan(struct btrfs_fs_info *fs_info); | |
3788 | int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, | |
3789 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); | |
3790 | int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans, | |
3791 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); | |
3792 | int btrfs_create_qgroup(struct btrfs_trans_handle *trans, | |
3793 | struct btrfs_fs_info *fs_info, u64 qgroupid, | |
3794 | char *name); | |
3795 | int btrfs_remove_qgroup(struct btrfs_trans_handle *trans, | |
3796 | struct btrfs_fs_info *fs_info, u64 qgroupid); | |
3797 | int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, | |
3798 | struct btrfs_fs_info *fs_info, u64 qgroupid, | |
3799 | struct btrfs_qgroup_limit *limit); | |
3800 | int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info); | |
3801 | void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info); | |
3802 | struct btrfs_delayed_extent_op; | |
3803 | int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans, | |
3804 | struct btrfs_delayed_ref_node *node, | |
3805 | struct btrfs_delayed_extent_op *extent_op); | |
3806 | int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, | |
3807 | struct btrfs_fs_info *fs_info, | |
3808 | struct btrfs_delayed_ref_node *node, | |
3809 | struct btrfs_delayed_extent_op *extent_op); | |
3810 | int btrfs_run_qgroups(struct btrfs_trans_handle *trans, | |
3811 | struct btrfs_fs_info *fs_info); | |
3812 | int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, | |
3813 | struct btrfs_fs_info *fs_info, u64 srcid, u64 objectid, | |
3814 | struct btrfs_qgroup_inherit *inherit); | |
3815 | int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes); | |
3816 | void btrfs_qgroup_free(struct btrfs_root *root, u64 num_bytes); | |
3817 | ||
3818 | void assert_qgroups_uptodate(struct btrfs_trans_handle *trans); | |
bd989ba3 | 3819 | |
95a06077 JS |
3820 | static inline int is_fstree(u64 rootid) |
3821 | { | |
3822 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
3823 | (s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID) | |
3824 | return 1; | |
3825 | return 0; | |
3826 | } | |
210549eb DS |
3827 | |
3828 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3829 | { | |
3830 | return signal_pending(current); | |
3831 | } | |
3832 | ||
3833 | ||
eb60ceac | 3834 | #endif |