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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
810191ff CM |
22 | #include <linux/mm.h> |
23 | #include <linux/highmem.h> | |
e20d96d6 | 24 | #include <linux/fs.h> |
a2de733c | 25 | #include <linux/rwsem.h> |
803b2f54 | 26 | #include <linux/semaphore.h> |
58176a96 | 27 | #include <linux/completion.h> |
04160088 | 28 | #include <linux/backing-dev.h> |
e6dcd2dc | 29 | #include <linux/wait.h> |
5a0e3ad6 | 30 | #include <linux/slab.h> |
f8b18087 | 31 | #include <linux/kobject.h> |
1abe9b8a | 32 | #include <trace/events/btrfs.h> |
479965d6 | 33 | #include <asm/kmap_types.h> |
3b16a4e3 | 34 | #include <linux/pagemap.h> |
55e301fd | 35 | #include <linux/btrfs.h> |
21c7e756 | 36 | #include <linux/workqueue.h> |
d1310b2e | 37 | #include "extent_io.h" |
5f39d397 | 38 | #include "extent_map.h" |
8b712842 | 39 | #include "async-thread.h" |
e20d96d6 | 40 | |
e089f05c | 41 | struct btrfs_trans_handle; |
79154b1b | 42 | struct btrfs_transaction; |
a22285a6 | 43 | struct btrfs_pending_snapshot; |
35b7e476 CM |
44 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
45 | extern struct kmem_cache *btrfs_transaction_cachep; | |
46 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 47 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 48 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 49 | struct btrfs_ordered_sum; |
e089f05c | 50 | |
294e30fe JB |
51 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
52 | #define STATIC noinline | |
53 | #else | |
54 | #define STATIC static noinline | |
55 | #endif | |
56 | ||
cdb4c574 | 57 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 58 | |
72d7aefc | 59 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 60 | |
4008c04a | 61 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 62 | |
5d4f98a2 YZ |
63 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
64 | ||
0b86a832 | 65 | /* holds pointers to all of the tree roots */ |
6407bf6d | 66 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
67 | |
68 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 69 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 70 | |
0b86a832 CM |
71 | /* |
72 | * chunk tree stores translations from logical -> physical block numbering | |
73 | * the super block points to the chunk tree | |
74 | */ | |
e085def2 | 75 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
76 | |
77 | /* | |
78 | * stores information about which areas of a given device are in use. | |
79 | * one per device. The tree of tree roots points to the device tree | |
80 | */ | |
e085def2 CM |
81 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
82 | ||
83 | /* one per subvolume, storing files and directories */ | |
84 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
85 | ||
86 | /* directory objectid inside the root tree */ | |
87 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 88 | |
d20f7043 CM |
89 | /* holds checksums of all the data extents */ |
90 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
91 | ||
630dc772 AJ |
92 | /* holds quota configuration and tracking */ |
93 | #define BTRFS_QUOTA_TREE_OBJECTID 8ULL | |
94 | ||
07b30a49 SB |
95 | /* for storing items that use the BTRFS_UUID_KEY* types */ |
96 | #define BTRFS_UUID_TREE_OBJECTID 9ULL | |
97 | ||
60b62978 DS |
98 | /* for storing balance parameters in the root tree */ |
99 | #define BTRFS_BALANCE_OBJECTID -4ULL | |
100 | ||
7b128766 JB |
101 | /* orhpan objectid for tracking unlinked/truncated files */ |
102 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
103 | ||
e02119d5 CM |
104 | /* does write ahead logging to speed up fsyncs */ |
105 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
106 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
107 | ||
e4657689 ZY |
108 | /* for space balancing */ |
109 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
110 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
111 | ||
d20f7043 CM |
112 | /* |
113 | * extent checksums all have this objectid | |
114 | * this allows them to share the logging tree | |
115 | * for fsyncs | |
116 | */ | |
117 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
118 | ||
0af3d00b JB |
119 | /* For storing free space cache */ |
120 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL | |
121 | ||
82d5902d | 122 | /* |
527a1361 | 123 | * The inode number assigned to the special inode for storing |
82d5902d LZ |
124 | * free ino cache |
125 | */ | |
126 | #define BTRFS_FREE_INO_OBJECTID -12ULL | |
127 | ||
31840ae1 ZY |
128 | /* dummy objectid represents multiple objectids */ |
129 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
130 | ||
0b86a832 | 131 | /* |
6527cdbe | 132 | * All files have objectids in this range. |
0b86a832 | 133 | */ |
f6dbff55 | 134 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 135 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 136 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 137 | |
0b86a832 CM |
138 | |
139 | /* | |
140 | * the device items go into the chunk tree. The key is in the form | |
141 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
142 | */ | |
143 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
144 | ||
4df27c4d YZ |
145 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
146 | ||
147 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 | |
148 | ||
6e71c47a | 149 | #define BTRFS_DEV_REPLACE_DEVID 0ULL |
e93c89c1 | 150 | |
727011e0 CM |
151 | /* |
152 | * the max metadata block size. This limit is somewhat artificial, | |
153 | * but the memmove costs go through the roof for larger blocks. | |
154 | */ | |
155 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
156 | ||
e20d96d6 CM |
157 | /* |
158 | * we can actually store much bigger names, but lets not confuse the rest | |
159 | * of linux | |
160 | */ | |
161 | #define BTRFS_NAME_LEN 255 | |
162 | ||
f186373f MF |
163 | /* |
164 | * Theoretical limit is larger, but we keep this down to a sane | |
165 | * value. That should limit greatly the possibility of collisions on | |
166 | * inode ref items. | |
167 | */ | |
168 | #define BTRFS_LINK_MAX 65535U | |
169 | ||
f254e52c CM |
170 | /* 32 bytes in various csum fields */ |
171 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
172 | |
173 | /* csum types */ | |
174 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
175 | ||
176 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
177 | ||
509659cd | 178 | /* four bytes for CRC32 */ |
3954401f | 179 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 180 | |
29a8d9a0 SB |
181 | /* spefic to btrfs_map_block(), therefore not in include/linux/blk_types.h */ |
182 | #define REQ_GET_READ_MIRRORS (1 << 30) | |
183 | ||
fabb5681 CM |
184 | #define BTRFS_FT_UNKNOWN 0 |
185 | #define BTRFS_FT_REG_FILE 1 | |
186 | #define BTRFS_FT_DIR 2 | |
187 | #define BTRFS_FT_CHRDEV 3 | |
188 | #define BTRFS_FT_BLKDEV 4 | |
189 | #define BTRFS_FT_FIFO 5 | |
190 | #define BTRFS_FT_SOCK 6 | |
191 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
192 | #define BTRFS_FT_XATTR 8 |
193 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 194 | |
3d136a11 SB |
195 | /* ioprio of readahead is set to idle */ |
196 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
197 | ||
e2d84521 MX |
198 | #define BTRFS_DIRTY_METADATA_THRESH (32 * 1024 * 1024) |
199 | ||
fec577fb | 200 | /* |
d4a78947 WF |
201 | * The key defines the order in the tree, and so it also defines (optimal) |
202 | * block layout. | |
203 | * | |
204 | * objectid corresponds to the inode number. | |
205 | * | |
206 | * type tells us things about the object, and is a kind of stream selector. | |
207 | * so for a given inode, keys with type of 1 might refer to the inode data, | |
208 | * type of 2 may point to file data in the btree and type == 3 may point to | |
209 | * extents. | |
fec577fb CM |
210 | * |
211 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
212 | * |
213 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
214 | * in cpu native order. Otherwise they are identical and their sizes | |
215 | * should be the same (ie both packed) | |
fec577fb | 216 | */ |
e2fa7227 CM |
217 | struct btrfs_disk_key { |
218 | __le64 objectid; | |
5f39d397 | 219 | u8 type; |
70b2befd | 220 | __le64 offset; |
e2fa7227 CM |
221 | } __attribute__ ((__packed__)); |
222 | ||
223 | struct btrfs_key { | |
eb60ceac | 224 | u64 objectid; |
5f39d397 | 225 | u8 type; |
70b2befd | 226 | u64 offset; |
eb60ceac CM |
227 | } __attribute__ ((__packed__)); |
228 | ||
0b86a832 CM |
229 | struct btrfs_mapping_tree { |
230 | struct extent_map_tree map_tree; | |
231 | }; | |
232 | ||
0b86a832 CM |
233 | struct btrfs_dev_item { |
234 | /* the internal btrfs device id */ | |
235 | __le64 devid; | |
236 | ||
237 | /* size of the device */ | |
238 | __le64 total_bytes; | |
239 | ||
240 | /* bytes used */ | |
241 | __le64 bytes_used; | |
242 | ||
243 | /* optimal io alignment for this device */ | |
244 | __le32 io_align; | |
245 | ||
246 | /* optimal io width for this device */ | |
247 | __le32 io_width; | |
248 | ||
249 | /* minimal io size for this device */ | |
250 | __le32 sector_size; | |
251 | ||
0b86a832 CM |
252 | /* type and info about this device */ |
253 | __le64 type; | |
254 | ||
2b82032c YZ |
255 | /* expected generation for this device */ |
256 | __le64 generation; | |
257 | ||
c3027eb5 CM |
258 | /* |
259 | * starting byte of this partition on the device, | |
d4a78947 | 260 | * to allow for stripe alignment in the future |
c3027eb5 CM |
261 | */ |
262 | __le64 start_offset; | |
263 | ||
e17cade2 CM |
264 | /* grouping information for allocation decisions */ |
265 | __le32 dev_group; | |
266 | ||
267 | /* seek speed 0-100 where 100 is fastest */ | |
268 | u8 seek_speed; | |
269 | ||
270 | /* bandwidth 0-100 where 100 is fastest */ | |
271 | u8 bandwidth; | |
272 | ||
0d81ba5d | 273 | /* btrfs generated uuid for this device */ |
e17cade2 | 274 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
275 | |
276 | /* uuid of FS who owns this device */ | |
277 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
278 | } __attribute__ ((__packed__)); |
279 | ||
280 | struct btrfs_stripe { | |
281 | __le64 devid; | |
282 | __le64 offset; | |
e17cade2 | 283 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
284 | } __attribute__ ((__packed__)); |
285 | ||
286 | struct btrfs_chunk { | |
e17cade2 CM |
287 | /* size of this chunk in bytes */ |
288 | __le64 length; | |
289 | ||
290 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 291 | __le64 owner; |
e17cade2 | 292 | |
0b86a832 CM |
293 | __le64 stripe_len; |
294 | __le64 type; | |
295 | ||
296 | /* optimal io alignment for this chunk */ | |
297 | __le32 io_align; | |
298 | ||
299 | /* optimal io width for this chunk */ | |
300 | __le32 io_width; | |
301 | ||
302 | /* minimal io size for this chunk */ | |
303 | __le32 sector_size; | |
304 | ||
305 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
306 | * item in the btree | |
307 | */ | |
308 | __le16 num_stripes; | |
321aecc6 CM |
309 | |
310 | /* sub stripes only matter for raid10 */ | |
311 | __le16 sub_stripes; | |
0b86a832 CM |
312 | struct btrfs_stripe stripe; |
313 | /* additional stripes go here */ | |
314 | } __attribute__ ((__packed__)); | |
315 | ||
0af3d00b JB |
316 | #define BTRFS_FREE_SPACE_EXTENT 1 |
317 | #define BTRFS_FREE_SPACE_BITMAP 2 | |
318 | ||
319 | struct btrfs_free_space_entry { | |
320 | __le64 offset; | |
321 | __le64 bytes; | |
322 | u8 type; | |
323 | } __attribute__ ((__packed__)); | |
324 | ||
325 | struct btrfs_free_space_header { | |
326 | struct btrfs_disk_key location; | |
327 | __le64 generation; | |
328 | __le64 num_entries; | |
329 | __le64 num_bitmaps; | |
330 | } __attribute__ ((__packed__)); | |
331 | ||
0b86a832 CM |
332 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
333 | { | |
334 | BUG_ON(num_stripes == 0); | |
335 | return sizeof(struct btrfs_chunk) + | |
336 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
337 | } | |
338 | ||
5d4f98a2 YZ |
339 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
340 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) | |
acce952b | 341 | |
342 | /* | |
343 | * File system states | |
344 | */ | |
87533c47 | 345 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 346 | #define BTRFS_FS_STATE_REMOUNTING 1 |
08748810 | 347 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
c404e0dc | 348 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
acce952b | 349 | |
87533c47 | 350 | /* Super block flags */ |
acce952b | 351 | /* Errors detected */ |
352 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) | |
353 | ||
5d4f98a2 YZ |
354 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
355 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) | |
356 | ||
357 | #define BTRFS_BACKREF_REV_MAX 256 | |
358 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
359 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
360 | BTRFS_BACKREF_REV_SHIFT) | |
361 | ||
362 | #define BTRFS_OLD_BACKREF_REV 0 | |
363 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 364 | |
fec577fb CM |
365 | /* |
366 | * every tree block (leaf or node) starts with this header. | |
367 | */ | |
bb492bb0 | 368 | struct btrfs_header { |
e17cade2 | 369 | /* these first four must match the super block */ |
f254e52c | 370 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 371 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 372 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 373 | __le64 flags; |
e17cade2 CM |
374 | |
375 | /* allowed to be different from the super from here on down */ | |
376 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 377 | __le64 generation; |
4d775673 | 378 | __le64 owner; |
5f39d397 | 379 | __le32 nritems; |
9a6f11ed | 380 | u8 level; |
eb60ceac CM |
381 | } __attribute__ ((__packed__)); |
382 | ||
5f39d397 | 383 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
384 | sizeof(struct btrfs_header)) / \ |
385 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 386 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
707e8a07 | 387 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->nodesize)) |
7ec20afb DS |
388 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ |
389 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
236454df CM |
390 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
391 | sizeof(struct btrfs_item) - \ | |
7ec20afb | 392 | BTRFS_FILE_EXTENT_INLINE_DATA_START) |
f34f57a3 YZ |
393 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
394 | sizeof(struct btrfs_item) -\ | |
395 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 396 | |
0b86a832 CM |
397 | |
398 | /* | |
399 | * this is a very generous portion of the super block, giving us | |
400 | * room to translate 14 chunks with 3 stripes each. | |
401 | */ | |
402 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 403 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 404 | |
af31f5e5 CM |
405 | /* |
406 | * just in case we somehow lose the roots and are not able to mount, | |
407 | * we store an array of the roots from previous transactions | |
408 | * in the super. | |
409 | */ | |
410 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
411 | struct btrfs_root_backup { | |
412 | __le64 tree_root; | |
413 | __le64 tree_root_gen; | |
414 | ||
415 | __le64 chunk_root; | |
416 | __le64 chunk_root_gen; | |
417 | ||
418 | __le64 extent_root; | |
419 | __le64 extent_root_gen; | |
420 | ||
421 | __le64 fs_root; | |
422 | __le64 fs_root_gen; | |
423 | ||
424 | __le64 dev_root; | |
425 | __le64 dev_root_gen; | |
426 | ||
427 | __le64 csum_root; | |
428 | __le64 csum_root_gen; | |
429 | ||
430 | __le64 total_bytes; | |
431 | __le64 bytes_used; | |
432 | __le64 num_devices; | |
433 | /* future */ | |
d1423248 | 434 | __le64 unused_64[4]; |
af31f5e5 CM |
435 | |
436 | u8 tree_root_level; | |
437 | u8 chunk_root_level; | |
438 | u8 extent_root_level; | |
439 | u8 fs_root_level; | |
440 | u8 dev_root_level; | |
441 | u8 csum_root_level; | |
442 | /* future and to align */ | |
443 | u8 unused_8[10]; | |
444 | } __attribute__ ((__packed__)); | |
445 | ||
fec577fb CM |
446 | /* |
447 | * the super block basically lists the main trees of the FS | |
448 | * it currently lacks any block count etc etc | |
449 | */ | |
234b63a0 | 450 | struct btrfs_super_block { |
f254e52c | 451 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 452 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 453 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 454 | __le64 bytenr; /* this block number */ |
63b10fc4 | 455 | __le64 flags; |
e17cade2 CM |
456 | |
457 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 458 | __le64 magic; |
3768f368 CM |
459 | __le64 generation; |
460 | __le64 root; | |
0b86a832 | 461 | __le64 chunk_root; |
e02119d5 | 462 | __le64 log_root; |
c3027eb5 CM |
463 | |
464 | /* this will help find the new super based on the log root */ | |
465 | __le64 log_root_transid; | |
db94535d CM |
466 | __le64 total_bytes; |
467 | __le64 bytes_used; | |
2e635a27 | 468 | __le64 root_dir_objectid; |
8a4b83cc | 469 | __le64 num_devices; |
5f39d397 CM |
470 | __le32 sectorsize; |
471 | __le32 nodesize; | |
707e8a07 | 472 | __le32 __unused_leafsize; |
87ee04eb | 473 | __le32 stripesize; |
0b86a832 | 474 | __le32 sys_chunk_array_size; |
84234f3a | 475 | __le64 chunk_root_generation; |
f2b636e8 JB |
476 | __le64 compat_flags; |
477 | __le64 compat_ro_flags; | |
478 | __le64 incompat_flags; | |
607d432d | 479 | __le16 csum_type; |
db94535d | 480 | u8 root_level; |
0b86a832 | 481 | u8 chunk_root_level; |
e02119d5 | 482 | u8 log_root_level; |
0d81ba5d | 483 | struct btrfs_dev_item dev_item; |
c3027eb5 | 484 | |
7ae9c09d | 485 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 486 | |
0af3d00b | 487 | __le64 cache_generation; |
26432799 | 488 | __le64 uuid_tree_generation; |
0af3d00b | 489 | |
c3027eb5 | 490 | /* future expansion */ |
26432799 | 491 | __le64 reserved[30]; |
0b86a832 | 492 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 493 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
494 | } __attribute__ ((__packed__)); |
495 | ||
f2b636e8 JB |
496 | /* |
497 | * Compat flags that we support. If any incompat flags are set other than the | |
498 | * ones specified below then we will fail to mount | |
499 | */ | |
5d4f98a2 | 500 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
0af3d00b | 501 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
67377734 | 502 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
a6fa6fae | 503 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
727011e0 CM |
504 | /* |
505 | * some patches floated around with a second compression method | |
506 | * lets save that incompat here for when they do get in | |
507 | * Note we don't actually support it, we're just reserving the | |
508 | * number | |
509 | */ | |
510 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) | |
511 | ||
512 | /* | |
513 | * older kernels tried to do bigger metadata blocks, but the | |
514 | * code was pretty buggy. Lets not let them try anymore. | |
515 | */ | |
516 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) | |
5d4f98a2 | 517 | |
f186373f | 518 | #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) |
53b381b3 | 519 | #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) |
3173a18f | 520 | #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) |
16e7549f | 521 | #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) |
f186373f | 522 | |
5d4f98a2 | 523 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
524 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
525 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
5d4f98a2 | 526 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL |
2eaa055f JM |
527 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
528 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
529 | ||
0af3d00b JB |
530 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
531 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 532 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 533 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 534 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 535 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
53b381b3 | 536 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 537 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f JB |
538 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
539 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) | |
f2b636e8 | 540 | |
2eaa055f JM |
541 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
542 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
543 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 544 | |
fec577fb | 545 | /* |
62e2749e | 546 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
547 | * the item in the leaf (relative to the start of the data area) |
548 | */ | |
0783fcfc | 549 | struct btrfs_item { |
e2fa7227 | 550 | struct btrfs_disk_key key; |
123abc88 | 551 | __le32 offset; |
5f39d397 | 552 | __le32 size; |
eb60ceac CM |
553 | } __attribute__ ((__packed__)); |
554 | ||
fec577fb CM |
555 | /* |
556 | * leaves have an item area and a data area: | |
557 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
558 | * | |
559 | * The data is separate from the items to get the keys closer together | |
560 | * during searches. | |
561 | */ | |
234b63a0 | 562 | struct btrfs_leaf { |
bb492bb0 | 563 | struct btrfs_header header; |
123abc88 | 564 | struct btrfs_item items[]; |
eb60ceac CM |
565 | } __attribute__ ((__packed__)); |
566 | ||
fec577fb CM |
567 | /* |
568 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
569 | * other blocks | |
570 | */ | |
123abc88 CM |
571 | struct btrfs_key_ptr { |
572 | struct btrfs_disk_key key; | |
573 | __le64 blockptr; | |
74493f7a | 574 | __le64 generation; |
123abc88 CM |
575 | } __attribute__ ((__packed__)); |
576 | ||
234b63a0 | 577 | struct btrfs_node { |
bb492bb0 | 578 | struct btrfs_header header; |
123abc88 | 579 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
580 | } __attribute__ ((__packed__)); |
581 | ||
fec577fb | 582 | /* |
234b63a0 CM |
583 | * btrfs_paths remember the path taken from the root down to the leaf. |
584 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
585 | * to any other levels that are present. |
586 | * | |
587 | * The slots array records the index of the item or block pointer | |
588 | * used while walking the tree. | |
589 | */ | |
234b63a0 | 590 | struct btrfs_path { |
5f39d397 | 591 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 592 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
593 | /* if there is real range locking, this locks field will change */ |
594 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 595 | int reada; |
925baedd | 596 | /* keep some upper locks as we walk down */ |
6702ed49 | 597 | int lowest_level; |
459931ec CM |
598 | |
599 | /* | |
600 | * set by btrfs_split_item, tells search_slot to keep all locks | |
601 | * and to force calls to keep space in the nodes | |
602 | */ | |
b9473439 CM |
603 | unsigned int search_for_split:1; |
604 | unsigned int keep_locks:1; | |
605 | unsigned int skip_locking:1; | |
606 | unsigned int leave_spinning:1; | |
5d4f98a2 | 607 | unsigned int search_commit_root:1; |
3f8a18cc | 608 | unsigned int need_commit_sem:1; |
eb60ceac | 609 | }; |
5de08d7d | 610 | |
62e2749e CM |
611 | /* |
612 | * items in the extent btree are used to record the objectid of the | |
613 | * owner of the block and the number of references | |
614 | */ | |
5d4f98a2 | 615 | |
62e2749e | 616 | struct btrfs_extent_item { |
5d4f98a2 YZ |
617 | __le64 refs; |
618 | __le64 generation; | |
619 | __le64 flags; | |
620 | } __attribute__ ((__packed__)); | |
621 | ||
622 | struct btrfs_extent_item_v0 { | |
62e2749e | 623 | __le32 refs; |
74493f7a CM |
624 | } __attribute__ ((__packed__)); |
625 | ||
5d4f98a2 YZ |
626 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
627 | sizeof(struct btrfs_item)) | |
628 | ||
629 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) | |
630 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) | |
631 | ||
632 | /* following flags only apply to tree blocks */ | |
633 | ||
634 | /* use full backrefs for extent pointers in the block */ | |
635 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) | |
636 | ||
a2de733c AJ |
637 | /* |
638 | * this flag is only used internally by scrub and may be changed at any time | |
639 | * it is only declared here to avoid collisions | |
640 | */ | |
641 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) | |
642 | ||
5d4f98a2 YZ |
643 | struct btrfs_tree_block_info { |
644 | struct btrfs_disk_key key; | |
645 | u8 level; | |
646 | } __attribute__ ((__packed__)); | |
647 | ||
648 | struct btrfs_extent_data_ref { | |
649 | __le64 root; | |
650 | __le64 objectid; | |
651 | __le64 offset; | |
652 | __le32 count; | |
653 | } __attribute__ ((__packed__)); | |
654 | ||
655 | struct btrfs_shared_data_ref { | |
656 | __le32 count; | |
657 | } __attribute__ ((__packed__)); | |
658 | ||
659 | struct btrfs_extent_inline_ref { | |
660 | u8 type; | |
1bec1aed | 661 | __le64 offset; |
5d4f98a2 YZ |
662 | } __attribute__ ((__packed__)); |
663 | ||
664 | /* old style backrefs item */ | |
665 | struct btrfs_extent_ref_v0 { | |
74493f7a CM |
666 | __le64 root; |
667 | __le64 generation; | |
668 | __le64 objectid; | |
5d4f98a2 | 669 | __le32 count; |
62e2749e CM |
670 | } __attribute__ ((__packed__)); |
671 | ||
5d4f98a2 | 672 | |
0b86a832 CM |
673 | /* dev extents record free space on individual devices. The owner |
674 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 675 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
676 | */ |
677 | struct btrfs_dev_extent { | |
e17cade2 CM |
678 | __le64 chunk_tree; |
679 | __le64 chunk_objectid; | |
680 | __le64 chunk_offset; | |
0b86a832 | 681 | __le64 length; |
e17cade2 | 682 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
683 | } __attribute__ ((__packed__)); |
684 | ||
3954401f | 685 | struct btrfs_inode_ref { |
aec7477b | 686 | __le64 index; |
3954401f CM |
687 | __le16 name_len; |
688 | /* name goes here */ | |
689 | } __attribute__ ((__packed__)); | |
690 | ||
f186373f MF |
691 | struct btrfs_inode_extref { |
692 | __le64 parent_objectid; | |
693 | __le64 index; | |
694 | __le16 name_len; | |
695 | __u8 name[0]; | |
696 | /* name goes here */ | |
697 | } __attribute__ ((__packed__)); | |
698 | ||
0b86a832 | 699 | struct btrfs_timespec { |
f254e52c | 700 | __le64 sec; |
1e1d2701 CM |
701 | __le32 nsec; |
702 | } __attribute__ ((__packed__)); | |
703 | ||
95029d7d | 704 | enum btrfs_compression_type { |
261507a0 LZ |
705 | BTRFS_COMPRESS_NONE = 0, |
706 | BTRFS_COMPRESS_ZLIB = 1, | |
a6fa6fae LZ |
707 | BTRFS_COMPRESS_LZO = 2, |
708 | BTRFS_COMPRESS_TYPES = 2, | |
709 | BTRFS_COMPRESS_LAST = 3, | |
95029d7d | 710 | }; |
c8b97818 | 711 | |
1e1d2701 | 712 | struct btrfs_inode_item { |
e02119d5 | 713 | /* nfs style generation number */ |
1e1d2701 | 714 | __le64 generation; |
e02119d5 CM |
715 | /* transid that last touched this inode */ |
716 | __le64 transid; | |
1e1d2701 | 717 | __le64 size; |
a76a3cd4 | 718 | __le64 nbytes; |
31f3c99b | 719 | __le64 block_group; |
1e1d2701 CM |
720 | __le32 nlink; |
721 | __le32 uid; | |
722 | __le32 gid; | |
723 | __le32 mode; | |
0b86a832 | 724 | __le64 rdev; |
f2b636e8 | 725 | __le64 flags; |
c8b97818 | 726 | |
c3027eb5 CM |
727 | /* modification sequence number for NFS */ |
728 | __le64 sequence; | |
729 | ||
730 | /* | |
731 | * a little future expansion, for more than this we can | |
732 | * just grow the inode item and version it | |
733 | */ | |
734 | __le64 reserved[4]; | |
0b86a832 CM |
735 | struct btrfs_timespec atime; |
736 | struct btrfs_timespec ctime; | |
737 | struct btrfs_timespec mtime; | |
738 | struct btrfs_timespec otime; | |
1e1d2701 CM |
739 | } __attribute__ ((__packed__)); |
740 | ||
e02119d5 CM |
741 | struct btrfs_dir_log_item { |
742 | __le64 end; | |
743 | } __attribute__ ((__packed__)); | |
744 | ||
62e2749e | 745 | struct btrfs_dir_item { |
d6e4a428 | 746 | struct btrfs_disk_key location; |
e02119d5 | 747 | __le64 transid; |
5103e947 | 748 | __le16 data_len; |
a8a2ee0c | 749 | __le16 name_len; |
62e2749e CM |
750 | u8 type; |
751 | } __attribute__ ((__packed__)); | |
752 | ||
b83cc969 LZ |
753 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
754 | ||
521e0546 DS |
755 | /* |
756 | * Internal in-memory flag that a subvolume has been marked for deletion but | |
757 | * still visible as a directory | |
758 | */ | |
759 | #define BTRFS_ROOT_SUBVOL_DEAD (1ULL << 48) | |
760 | ||
62e2749e | 761 | struct btrfs_root_item { |
d6e4a428 | 762 | struct btrfs_inode_item inode; |
84234f3a | 763 | __le64 generation; |
d6e4a428 | 764 | __le64 root_dirid; |
db94535d CM |
765 | __le64 bytenr; |
766 | __le64 byte_limit; | |
767 | __le64 bytes_used; | |
80ff3856 | 768 | __le64 last_snapshot; |
f2b636e8 | 769 | __le64 flags; |
62e2749e | 770 | __le32 refs; |
5eda7b5e CM |
771 | struct btrfs_disk_key drop_progress; |
772 | u8 drop_level; | |
db94535d | 773 | u8 level; |
8ea05e3a AB |
774 | |
775 | /* | |
776 | * The following fields appear after subvol_uuids+subvol_times | |
777 | * were introduced. | |
778 | */ | |
779 | ||
780 | /* | |
781 | * This generation number is used to test if the new fields are valid | |
782 | * and up to date while reading the root item. Everytime the root item | |
783 | * is written out, the "generation" field is copied into this field. If | |
784 | * anyone ever mounted the fs with an older kernel, we will have | |
785 | * mismatching generation values here and thus must invalidate the | |
786 | * new fields. See btrfs_update_root and btrfs_find_last_root for | |
787 | * details. | |
788 | * the offset of generation_v2 is also used as the start for the memset | |
789 | * when invalidating the fields. | |
790 | */ | |
791 | __le64 generation_v2; | |
792 | u8 uuid[BTRFS_UUID_SIZE]; | |
793 | u8 parent_uuid[BTRFS_UUID_SIZE]; | |
794 | u8 received_uuid[BTRFS_UUID_SIZE]; | |
795 | __le64 ctransid; /* updated when an inode changes */ | |
796 | __le64 otransid; /* trans when created */ | |
797 | __le64 stransid; /* trans when sent. non-zero for received subvol */ | |
798 | __le64 rtransid; /* trans when received. non-zero for received subvol */ | |
799 | struct btrfs_timespec ctime; | |
800 | struct btrfs_timespec otime; | |
801 | struct btrfs_timespec stime; | |
802 | struct btrfs_timespec rtime; | |
803 | __le64 reserved[8]; /* for future */ | |
9f5fae2f | 804 | } __attribute__ ((__packed__)); |
62e2749e | 805 | |
0660b5af CM |
806 | /* |
807 | * this is used for both forward and backward root refs | |
808 | */ | |
809 | struct btrfs_root_ref { | |
810 | __le64 dirid; | |
811 | __le64 sequence; | |
812 | __le16 name_len; | |
813 | } __attribute__ ((__packed__)); | |
814 | ||
0940ebf6 ID |
815 | struct btrfs_disk_balance_args { |
816 | /* | |
817 | * profiles to operate on, single is denoted by | |
818 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
819 | */ | |
820 | __le64 profiles; | |
821 | ||
822 | /* usage filter */ | |
823 | __le64 usage; | |
824 | ||
825 | /* devid filter */ | |
826 | __le64 devid; | |
827 | ||
828 | /* devid subset filter [pstart..pend) */ | |
829 | __le64 pstart; | |
830 | __le64 pend; | |
831 | ||
832 | /* btrfs virtual address space subset filter [vstart..vend) */ | |
833 | __le64 vstart; | |
834 | __le64 vend; | |
835 | ||
836 | /* | |
837 | * profile to convert to, single is denoted by | |
838 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
839 | */ | |
840 | __le64 target; | |
841 | ||
842 | /* BTRFS_BALANCE_ARGS_* */ | |
843 | __le64 flags; | |
844 | ||
7d824b6f DS |
845 | /* BTRFS_BALANCE_ARGS_LIMIT value */ |
846 | __le64 limit; | |
847 | ||
848 | __le64 unused[7]; | |
0940ebf6 ID |
849 | } __attribute__ ((__packed__)); |
850 | ||
851 | /* | |
852 | * store balance parameters to disk so that balance can be properly | |
853 | * resumed after crash or unmount | |
854 | */ | |
855 | struct btrfs_balance_item { | |
856 | /* BTRFS_BALANCE_* */ | |
857 | __le64 flags; | |
858 | ||
859 | struct btrfs_disk_balance_args data; | |
860 | struct btrfs_disk_balance_args meta; | |
861 | struct btrfs_disk_balance_args sys; | |
862 | ||
863 | __le64 unused[4]; | |
864 | } __attribute__ ((__packed__)); | |
865 | ||
d899e052 YZ |
866 | #define BTRFS_FILE_EXTENT_INLINE 0 |
867 | #define BTRFS_FILE_EXTENT_REG 1 | |
868 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 869 | |
9f5fae2f | 870 | struct btrfs_file_extent_item { |
c8b97818 CM |
871 | /* |
872 | * transaction id that created this extent | |
873 | */ | |
71951f35 | 874 | __le64 generation; |
c8b97818 CM |
875 | /* |
876 | * max number of bytes to hold this extent in ram | |
877 | * when we split a compressed extent we can't know how big | |
878 | * each of the resulting pieces will be. So, this is | |
879 | * an upper limit on the size of the extent in ram instead of | |
880 | * an exact limit. | |
881 | */ | |
882 | __le64 ram_bytes; | |
883 | ||
884 | /* | |
885 | * 32 bits for the various ways we might encode the data, | |
886 | * including compression and encryption. If any of these | |
887 | * are set to something a given disk format doesn't understand | |
888 | * it is treated like an incompat flag for reading and writing, | |
889 | * but not for stat. | |
890 | */ | |
891 | u8 compression; | |
892 | u8 encryption; | |
893 | __le16 other_encoding; /* spare for later use */ | |
894 | ||
895 | /* are we inline data or a real extent? */ | |
236454df | 896 | u8 type; |
c8b97818 | 897 | |
9f5fae2f CM |
898 | /* |
899 | * disk space consumed by the extent, checksum blocks are included | |
900 | * in these numbers | |
7ec20afb DS |
901 | * |
902 | * At this offset in the structure, the inline extent data start. | |
9f5fae2f | 903 | */ |
db94535d CM |
904 | __le64 disk_bytenr; |
905 | __le64 disk_num_bytes; | |
9f5fae2f | 906 | /* |
dee26a9f | 907 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
908 | * this extent record is for. This allows a file extent to point |
909 | * into the middle of an existing extent on disk, sharing it | |
910 | * between two snapshots (useful if some bytes in the middle of the | |
911 | * extent have changed | |
912 | */ | |
913 | __le64 offset; | |
914 | /* | |
c8b97818 CM |
915 | * the logical number of file blocks (no csums included). This |
916 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 917 | */ |
db94535d | 918 | __le64 num_bytes; |
c8b97818 | 919 | |
9f5fae2f CM |
920 | } __attribute__ ((__packed__)); |
921 | ||
f254e52c | 922 | struct btrfs_csum_item { |
509659cd | 923 | u8 csum; |
f254e52c CM |
924 | } __attribute__ ((__packed__)); |
925 | ||
733f4fbb SB |
926 | struct btrfs_dev_stats_item { |
927 | /* | |
928 | * grow this item struct at the end for future enhancements and keep | |
929 | * the existing values unchanged | |
930 | */ | |
931 | __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; | |
932 | } __attribute__ ((__packed__)); | |
933 | ||
e922e087 SB |
934 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 |
935 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 | |
936 | #define BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED 0 | |
937 | #define BTRFS_DEV_REPLACE_ITEM_STATE_STARTED 1 | |
938 | #define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 2 | |
939 | #define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 3 | |
940 | #define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 4 | |
941 | ||
942 | struct btrfs_dev_replace { | |
943 | u64 replace_state; /* see #define above */ | |
944 | u64 time_started; /* seconds since 1-Jan-1970 */ | |
945 | u64 time_stopped; /* seconds since 1-Jan-1970 */ | |
946 | atomic64_t num_write_errors; | |
947 | atomic64_t num_uncorrectable_read_errors; | |
948 | ||
949 | u64 cursor_left; | |
950 | u64 committed_cursor_left; | |
951 | u64 cursor_left_last_write_of_item; | |
952 | u64 cursor_right; | |
953 | ||
954 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
955 | ||
956 | int is_valid; | |
957 | int item_needs_writeback; | |
958 | struct btrfs_device *srcdev; | |
959 | struct btrfs_device *tgtdev; | |
960 | ||
961 | pid_t lock_owner; | |
962 | atomic_t nesting_level; | |
963 | struct mutex lock_finishing_cancel_unmount; | |
964 | struct mutex lock_management_lock; | |
965 | struct mutex lock; | |
966 | ||
967 | struct btrfs_scrub_progress scrub_progress; | |
968 | }; | |
969 | ||
a2bff640 SB |
970 | struct btrfs_dev_replace_item { |
971 | /* | |
972 | * grow this item struct at the end for future enhancements and keep | |
973 | * the existing values unchanged | |
974 | */ | |
975 | __le64 src_devid; | |
976 | __le64 cursor_left; | |
977 | __le64 cursor_right; | |
978 | __le64 cont_reading_from_srcdev_mode; | |
979 | ||
980 | __le64 replace_state; | |
981 | __le64 time_started; | |
982 | __le64 time_stopped; | |
983 | __le64 num_write_errors; | |
984 | __le64 num_uncorrectable_read_errors; | |
985 | } __attribute__ ((__packed__)); | |
986 | ||
0b86a832 | 987 | /* different types of block groups (and chunks) */ |
52ba6929 ID |
988 | #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) |
989 | #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) | |
990 | #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) | |
991 | #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) | |
992 | #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) | |
993 | #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) | |
994 | #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) | |
1c89cdd1 AP |
995 | #define BTRFS_BLOCK_GROUP_RAID5 (1ULL << 7) |
996 | #define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8) | |
36523e95 DS |
997 | #define BTRFS_BLOCK_GROUP_RESERVED (BTRFS_AVAIL_ALLOC_BIT_SINGLE | \ |
998 | BTRFS_SPACE_INFO_GLOBAL_RSV) | |
e6ec716f MX |
999 | |
1000 | enum btrfs_raid_types { | |
1001 | BTRFS_RAID_RAID10, | |
1002 | BTRFS_RAID_RAID1, | |
1003 | BTRFS_RAID_DUP, | |
1004 | BTRFS_RAID_RAID0, | |
1005 | BTRFS_RAID_SINGLE, | |
e942f883 CM |
1006 | BTRFS_RAID_RAID5, |
1007 | BTRFS_RAID_RAID6, | |
e6ec716f MX |
1008 | BTRFS_NR_RAID_TYPES |
1009 | }; | |
52ba6929 ID |
1010 | |
1011 | #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \ | |
1012 | BTRFS_BLOCK_GROUP_SYSTEM | \ | |
1013 | BTRFS_BLOCK_GROUP_METADATA) | |
1014 | ||
1015 | #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \ | |
1016 | BTRFS_BLOCK_GROUP_RAID1 | \ | |
53b381b3 DW |
1017 | BTRFS_BLOCK_GROUP_RAID5 | \ |
1018 | BTRFS_BLOCK_GROUP_RAID6 | \ | |
52ba6929 ID |
1019 | BTRFS_BLOCK_GROUP_DUP | \ |
1020 | BTRFS_BLOCK_GROUP_RAID10) | |
a46d11a8 ID |
1021 | /* |
1022 | * We need a bit for restriper to be able to tell when chunks of type | |
1023 | * SINGLE are available. This "extended" profile format is used in | |
1024 | * fs_info->avail_*_alloc_bits (in-memory) and balance item fields | |
1025 | * (on-disk). The corresponding on-disk bit in chunk.type is reserved | |
1026 | * to avoid remappings between two formats in future. | |
1027 | */ | |
1028 | #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) | |
1029 | ||
36523e95 DS |
1030 | /* |
1031 | * A fake block group type that is used to communicate global block reserve | |
1032 | * size to userspace via the SPACE_INFO ioctl. | |
1033 | */ | |
1034 | #define BTRFS_SPACE_INFO_GLOBAL_RSV (1ULL << 49) | |
1035 | ||
899c81ea ID |
1036 | #define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | \ |
1037 | BTRFS_AVAIL_ALLOC_BIT_SINGLE) | |
1038 | ||
1039 | static inline u64 chunk_to_extended(u64 flags) | |
1040 | { | |
1041 | if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0) | |
1042 | flags |= BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
1043 | ||
1044 | return flags; | |
1045 | } | |
1046 | static inline u64 extended_to_chunk(u64 flags) | |
1047 | { | |
1048 | return flags & ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
1049 | } | |
1050 | ||
9078a3e1 CM |
1051 | struct btrfs_block_group_item { |
1052 | __le64 used; | |
0b86a832 CM |
1053 | __le64 chunk_objectid; |
1054 | __le64 flags; | |
9078a3e1 CM |
1055 | } __attribute__ ((__packed__)); |
1056 | ||
630dc772 AJ |
1057 | /* |
1058 | * is subvolume quota turned on? | |
1059 | */ | |
1060 | #define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) | |
1061 | /* | |
2f232036 | 1062 | * RESCAN is set during the initialization phase |
630dc772 | 1063 | */ |
2f232036 | 1064 | #define BTRFS_QGROUP_STATUS_FLAG_RESCAN (1ULL << 1) |
630dc772 AJ |
1065 | /* |
1066 | * Some qgroup entries are known to be out of date, | |
1067 | * either because the configuration has changed in a way that | |
1068 | * makes a rescan necessary, or because the fs has been mounted | |
1069 | * with a non-qgroup-aware version. | |
1070 | * Turning qouta off and on again makes it inconsistent, too. | |
1071 | */ | |
1072 | #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) | |
1073 | ||
1074 | #define BTRFS_QGROUP_STATUS_VERSION 1 | |
1075 | ||
1076 | struct btrfs_qgroup_status_item { | |
1077 | __le64 version; | |
1078 | /* | |
1079 | * the generation is updated during every commit. As older | |
1080 | * versions of btrfs are not aware of qgroups, it will be | |
1081 | * possible to detect inconsistencies by checking the | |
1082 | * generation on mount time | |
1083 | */ | |
1084 | __le64 generation; | |
1085 | ||
1086 | /* flag definitions see above */ | |
1087 | __le64 flags; | |
1088 | ||
1089 | /* | |
1090 | * only used during scanning to record the progress | |
1091 | * of the scan. It contains a logical address | |
1092 | */ | |
2f232036 | 1093 | __le64 rescan; |
630dc772 AJ |
1094 | } __attribute__ ((__packed__)); |
1095 | ||
1096 | struct btrfs_qgroup_info_item { | |
1097 | __le64 generation; | |
1098 | __le64 rfer; | |
1099 | __le64 rfer_cmpr; | |
1100 | __le64 excl; | |
1101 | __le64 excl_cmpr; | |
1102 | } __attribute__ ((__packed__)); | |
1103 | ||
1104 | /* flags definition for qgroup limits */ | |
1105 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) | |
1106 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) | |
1107 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) | |
1108 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) | |
1109 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) | |
1110 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) | |
1111 | ||
1112 | struct btrfs_qgroup_limit_item { | |
1113 | /* | |
1114 | * only updated when any of the other values change | |
1115 | */ | |
1116 | __le64 flags; | |
1117 | __le64 max_rfer; | |
1118 | __le64 max_excl; | |
1119 | __le64 rsv_rfer; | |
1120 | __le64 rsv_excl; | |
1121 | } __attribute__ ((__packed__)); | |
1122 | ||
c1895442 JM |
1123 | /* For raid type sysfs entries */ |
1124 | struct raid_kobject { | |
1125 | int raid_type; | |
1126 | struct kobject kobj; | |
1127 | }; | |
1128 | ||
6324fbf3 | 1129 | struct btrfs_space_info { |
26b47ff6 | 1130 | spinlock_t lock; |
6a63209f | 1131 | |
89a55897 JB |
1132 | u64 total_bytes; /* total bytes in the space, |
1133 | this doesn't take mirrors into account */ | |
b742bb82 | 1134 | u64 bytes_used; /* total bytes used, |
e9c54999 | 1135 | this doesn't take mirrors into account */ |
6a63209f JB |
1136 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
1137 | transaction finishes */ | |
1138 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
1139 | current allocations */ | |
6a63209f | 1140 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 1141 | delalloc/allocations */ |
26b47ff6 MX |
1142 | u64 bytes_readonly; /* total bytes that are read only */ |
1143 | ||
1144 | unsigned int full:1; /* indicates that we cannot allocate any more | |
1145 | chunks for this space */ | |
1146 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
1147 | ||
1148 | unsigned int flush:1; /* set if we are trying to make space */ | |
1149 | ||
1150 | unsigned int force_alloc; /* set if we need to force a chunk | |
1151 | alloc for this space */ | |
1152 | ||
b742bb82 | 1153 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
1154 | u64 disk_total; /* total bytes on disk, takes mirrors into |
1155 | account */ | |
6a63209f | 1156 | |
26b47ff6 MX |
1157 | u64 flags; |
1158 | ||
b150a4f1 JB |
1159 | /* |
1160 | * bytes_pinned is kept in line with what is actually pinned, as in | |
1161 | * we've called update_block_group and dropped the bytes_used counter | |
1162 | * and increased the bytes_pinned counter. However this means that | |
1163 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
1164 | * delayed refs are flushed, so this counter is inc'ed everytime we call | |
1165 | * btrfs_free_extent so it is a realtime count of what will be freed | |
1166 | * once the transaction is committed. It will be zero'ed everytime the | |
1167 | * transaction commits. | |
1168 | */ | |
1169 | struct percpu_counter total_bytes_pinned; | |
1170 | ||
6324fbf3 | 1171 | struct list_head list; |
0f9dd46c | 1172 | |
26b47ff6 | 1173 | struct rw_semaphore groups_sem; |
0f9dd46c | 1174 | /* for block groups in our same type */ |
b742bb82 | 1175 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 1176 | wait_queue_head_t wait; |
6ab0a202 JM |
1177 | |
1178 | struct kobject kobj; | |
c1895442 | 1179 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
0f9dd46c JB |
1180 | }; |
1181 | ||
66d8f3dd MX |
1182 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
1183 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
1184 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
1185 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
1186 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
1187 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
1188 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
1189 | ||
f0486c68 YZ |
1190 | struct btrfs_block_rsv { |
1191 | u64 size; | |
1192 | u64 reserved; | |
f0486c68 | 1193 | struct btrfs_space_info *space_info; |
f0486c68 | 1194 | spinlock_t lock; |
66d8f3dd MX |
1195 | unsigned short full; |
1196 | unsigned short type; | |
1197 | unsigned short failfast; | |
f0486c68 YZ |
1198 | }; |
1199 | ||
fa9c0d79 CM |
1200 | /* |
1201 | * free clusters are used to claim free space in relatively large chunks, | |
1202 | * allowing us to do less seeky writes. They are used for all metadata | |
1203 | * allocations and data allocations in ssd mode. | |
1204 | */ | |
1205 | struct btrfs_free_cluster { | |
1206 | spinlock_t lock; | |
1207 | spinlock_t refill_lock; | |
1208 | struct rb_root root; | |
1209 | ||
1210 | /* largest extent in this cluster */ | |
1211 | u64 max_size; | |
1212 | ||
1213 | /* first extent starting offset */ | |
1214 | u64 window_start; | |
1215 | ||
1216 | struct btrfs_block_group_cache *block_group; | |
1217 | /* | |
1218 | * when a cluster is allocated from a block group, we put the | |
1219 | * cluster onto a list in the block group so that it can | |
1220 | * be freed before the block group is freed. | |
1221 | */ | |
1222 | struct list_head block_group_list; | |
6324fbf3 CM |
1223 | }; |
1224 | ||
817d52f8 JB |
1225 | enum btrfs_caching_type { |
1226 | BTRFS_CACHE_NO = 0, | |
1227 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
1228 | BTRFS_CACHE_FAST = 2, |
1229 | BTRFS_CACHE_FINISHED = 3, | |
36cce922 | 1230 | BTRFS_CACHE_ERROR = 4, |
817d52f8 JB |
1231 | }; |
1232 | ||
0af3d00b JB |
1233 | enum btrfs_disk_cache_state { |
1234 | BTRFS_DC_WRITTEN = 0, | |
1235 | BTRFS_DC_ERROR = 1, | |
1236 | BTRFS_DC_CLEAR = 2, | |
1237 | BTRFS_DC_SETUP = 3, | |
1238 | BTRFS_DC_NEED_WRITE = 4, | |
1239 | }; | |
1240 | ||
11833d66 YZ |
1241 | struct btrfs_caching_control { |
1242 | struct list_head list; | |
1243 | struct mutex mutex; | |
1244 | wait_queue_head_t wait; | |
bab39bf9 | 1245 | struct btrfs_work work; |
11833d66 YZ |
1246 | struct btrfs_block_group_cache *block_group; |
1247 | u64 progress; | |
1248 | atomic_t count; | |
1249 | }; | |
1250 | ||
9078a3e1 CM |
1251 | struct btrfs_block_group_cache { |
1252 | struct btrfs_key key; | |
1253 | struct btrfs_block_group_item item; | |
817d52f8 | 1254 | struct btrfs_fs_info *fs_info; |
0af3d00b | 1255 | struct inode *inode; |
c286ac48 | 1256 | spinlock_t lock; |
324ae4df | 1257 | u64 pinned; |
e8569813 | 1258 | u64 reserved; |
e570fd27 | 1259 | u64 delalloc_bytes; |
1b2da372 | 1260 | u64 bytes_super; |
0b86a832 | 1261 | u64 flags; |
96303081 | 1262 | u64 sectorsize; |
5b0e95bf | 1263 | u64 cache_generation; |
53b381b3 | 1264 | |
e570fd27 MX |
1265 | /* |
1266 | * It is just used for the delayed data space allocation because | |
1267 | * only the data space allocation and the relative metadata update | |
1268 | * can be done cross the transaction. | |
1269 | */ | |
1270 | struct rw_semaphore data_rwsem; | |
1271 | ||
53b381b3 DW |
1272 | /* for raid56, this is a full stripe, without parity */ |
1273 | unsigned long full_stripe_len; | |
1274 | ||
0410c94a MK |
1275 | unsigned int ro:1; |
1276 | unsigned int dirty:1; | |
1277 | unsigned int iref:1; | |
0af3d00b JB |
1278 | |
1279 | int disk_cache_state; | |
0f9dd46c | 1280 | |
817d52f8 | 1281 | /* cache tracking stuff */ |
817d52f8 | 1282 | int cached; |
11833d66 YZ |
1283 | struct btrfs_caching_control *caching_ctl; |
1284 | u64 last_byte_to_unpin; | |
817d52f8 | 1285 | |
0f9dd46c JB |
1286 | struct btrfs_space_info *space_info; |
1287 | ||
1288 | /* free space cache stuff */ | |
34d52cb6 | 1289 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
1290 | |
1291 | /* block group cache stuff */ | |
1292 | struct rb_node cache_node; | |
1293 | ||
1294 | /* for block groups in the same raid type */ | |
1295 | struct list_head list; | |
d2fb3437 YZ |
1296 | |
1297 | /* usage count */ | |
1298 | atomic_t count; | |
fa9c0d79 CM |
1299 | |
1300 | /* List of struct btrfs_free_clusters for this block group. | |
1301 | * Today it will only have one thing on it, but that may change | |
1302 | */ | |
1303 | struct list_head cluster_list; | |
ea658bad | 1304 | |
47ab2a6c JB |
1305 | /* For delayed block group creation or deletion of empty block groups */ |
1306 | struct list_head bg_list; | |
9078a3e1 | 1307 | }; |
0b86a832 | 1308 | |
097b8a7c JS |
1309 | /* delayed seq elem */ |
1310 | struct seq_list { | |
1311 | struct list_head list; | |
1312 | u64 seq; | |
1313 | }; | |
1314 | ||
5d80366e JB |
1315 | enum btrfs_orphan_cleanup_state { |
1316 | ORPHAN_CLEANUP_STARTED = 1, | |
1317 | ORPHAN_CLEANUP_DONE = 2, | |
1318 | }; | |
1319 | ||
53b381b3 DW |
1320 | /* used by the raid56 code to lock stripes for read/modify/write */ |
1321 | struct btrfs_stripe_hash { | |
1322 | struct list_head hash_list; | |
1323 | wait_queue_head_t wait; | |
1324 | spinlock_t lock; | |
1325 | }; | |
1326 | ||
1327 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
1328 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
1329 | struct list_head stripe_cache; |
1330 | spinlock_t cache_lock; | |
1331 | int cache_size; | |
1332 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
1333 | }; |
1334 | ||
1335 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
1336 | ||
21c7e756 MX |
1337 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
1338 | ||
097b8a7c | 1339 | /* fs_info */ |
5d4f98a2 | 1340 | struct reloc_control; |
0b86a832 | 1341 | struct btrfs_device; |
8a4b83cc | 1342 | struct btrfs_fs_devices; |
c9e9f97b | 1343 | struct btrfs_balance_control; |
16cdcec7 | 1344 | struct btrfs_delayed_root; |
9f5fae2f | 1345 | struct btrfs_fs_info { |
5f39d397 | 1346 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 1347 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
1348 | struct btrfs_root *extent_root; |
1349 | struct btrfs_root *tree_root; | |
0b86a832 CM |
1350 | struct btrfs_root *chunk_root; |
1351 | struct btrfs_root *dev_root; | |
3de4586c | 1352 | struct btrfs_root *fs_root; |
d20f7043 | 1353 | struct btrfs_root *csum_root; |
416ac51d | 1354 | struct btrfs_root *quota_root; |
f7a81ea4 | 1355 | struct btrfs_root *uuid_root; |
e02119d5 CM |
1356 | |
1357 | /* the log root tree is a directory of all the other log roots */ | |
1358 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
1359 | |
1360 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 1361 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 1362 | |
0f9dd46c JB |
1363 | /* block group cache stuff */ |
1364 | spinlock_t block_group_cache_lock; | |
a1897fdd | 1365 | u64 first_logical_byte; |
0f9dd46c JB |
1366 | struct rb_root block_group_cache_tree; |
1367 | ||
2bf64758 JB |
1368 | /* keep track of unallocated space */ |
1369 | spinlock_t free_chunk_lock; | |
1370 | u64 free_chunk_space; | |
1371 | ||
11833d66 YZ |
1372 | struct extent_io_tree freed_extents[2]; |
1373 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 1374 | |
0b86a832 CM |
1375 | /* logical->physical extent mapping */ |
1376 | struct btrfs_mapping_tree mapping_tree; | |
1377 | ||
16cdcec7 MX |
1378 | /* |
1379 | * block reservation for extent, checksum, root tree and | |
1380 | * delayed dir index item | |
1381 | */ | |
f0486c68 YZ |
1382 | struct btrfs_block_rsv global_block_rsv; |
1383 | /* block reservation for delay allocation */ | |
1384 | struct btrfs_block_rsv delalloc_block_rsv; | |
1385 | /* block reservation for metadata operations */ | |
1386 | struct btrfs_block_rsv trans_block_rsv; | |
1387 | /* block reservation for chunk tree */ | |
1388 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
1389 | /* block reservation for delayed operations */ |
1390 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
1391 | |
1392 | struct btrfs_block_rsv empty_block_rsv; | |
1393 | ||
293ffd5f | 1394 | u64 generation; |
15ee9bc7 | 1395 | u64 last_trans_committed; |
0a2b2a84 | 1396 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
1397 | |
1398 | /* | |
1399 | * this is updated to the current trans every time a full commit | |
1400 | * is required instead of the faster short fsync log commits | |
1401 | */ | |
1402 | u64 last_trans_log_full_commit; | |
25cd999e | 1403 | unsigned long mount_opt; |
261507a0 | 1404 | unsigned long compress_type:4; |
8b87dc17 | 1405 | int commit_interval; |
8c6a3ee6 MX |
1406 | /* |
1407 | * It is a suggestive number, the read side is safe even it gets a | |
1408 | * wrong number because we will write out the data into a regular | |
1409 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
1410 | * so it is also safe. | |
1411 | */ | |
6f568d35 | 1412 | u64 max_inline; |
c018daec MX |
1413 | /* |
1414 | * Protected by ->chunk_mutex and sb->s_umount. | |
1415 | * | |
1416 | * The reason that we use two lock to protect it is because only | |
1417 | * remount and mount operations can change it and these two operations | |
1418 | * are under sb->s_umount, but the read side (chunk allocation) can not | |
1419 | * acquire sb->s_umount or the deadlock would happen. So we use two | |
1420 | * locks to protect it. On the write side, we must acquire two locks, | |
1421 | * and on the read side, we just need acquire one of them. | |
1422 | */ | |
8f662a76 | 1423 | u64 alloc_start; |
79154b1b | 1424 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 1425 | wait_queue_head_t transaction_throttle; |
f9295749 | 1426 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 1427 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 1428 | wait_queue_head_t async_submit_wait; |
e02119d5 | 1429 | |
ceda0864 MX |
1430 | /* |
1431 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
1432 | * when they are updated. | |
1433 | * | |
1434 | * Because we do not clear the flags for ever, so we needn't use | |
1435 | * the lock on the read side. | |
1436 | * | |
1437 | * We also needn't use the lock when we mount the fs, because | |
1438 | * there is no other task which will update the flag. | |
1439 | */ | |
1440 | spinlock_t super_lock; | |
6c41761f DS |
1441 | struct btrfs_super_block *super_copy; |
1442 | struct btrfs_super_block *super_for_commit; | |
0b86a832 | 1443 | struct block_device *__bdev; |
e20d96d6 | 1444 | struct super_block *sb; |
d98237b3 | 1445 | struct inode *btree_inode; |
04160088 | 1446 | struct backing_dev_info bdi; |
e02119d5 | 1447 | struct mutex tree_log_mutex; |
a74a4b97 CM |
1448 | struct mutex transaction_kthread_mutex; |
1449 | struct mutex cleaner_mutex; | |
925baedd | 1450 | struct mutex chunk_mutex; |
7d9eb12c | 1451 | struct mutex volume_mutex; |
53b381b3 DW |
1452 | |
1453 | /* this is used during read/modify/write to make sure | |
1454 | * no two ios are trying to mod the same stripe at the same | |
1455 | * time | |
1456 | */ | |
1457 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
1458 | ||
5a3f23d5 CM |
1459 | /* |
1460 | * this protects the ordered operations list only while we are | |
1461 | * processing all of the entries on it. This way we make | |
1462 | * sure the commit code doesn't find the list temporarily empty | |
1463 | * because another function happens to be doing non-waiting preflush | |
1464 | * before jumping into the main commit. | |
1465 | */ | |
1466 | struct mutex ordered_operations_mutex; | |
9ffba8cd JB |
1467 | |
1468 | /* | |
1469 | * Same as ordered_operations_mutex except this is for ordered extents | |
1470 | * and not the operations. | |
1471 | */ | |
1472 | struct mutex ordered_extent_flush_mutex; | |
1473 | ||
9e351cc8 | 1474 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 1475 | |
c71bf099 | 1476 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 1477 | |
c71bf099 | 1478 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
1479 | struct srcu_struct subvol_srcu; |
1480 | ||
a4abeea4 | 1481 | spinlock_t trans_lock; |
7585717f CM |
1482 | /* |
1483 | * the reloc mutex goes with the trans lock, it is taken | |
1484 | * during commit to protect us from the relocation code | |
1485 | */ | |
1486 | struct mutex reloc_mutex; | |
1487 | ||
8fd17795 | 1488 | struct list_head trans_list; |
facda1e7 | 1489 | struct list_head dead_roots; |
11833d66 | 1490 | struct list_head caching_block_groups; |
e02119d5 | 1491 | |
24bbcf04 YZ |
1492 | spinlock_t delayed_iput_lock; |
1493 | struct list_head delayed_iputs; | |
1494 | ||
f29021b2 JS |
1495 | /* this protects tree_mod_seq_list */ |
1496 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 1497 | atomic64_t tree_mod_seq; |
f29021b2 JS |
1498 | struct list_head tree_mod_seq_list; |
1499 | ||
1500 | /* this protects tree_mod_log */ | |
1501 | rwlock_t tree_mod_log_lock; | |
1502 | struct rb_root tree_mod_log; | |
1503 | ||
cb03c743 | 1504 | atomic_t nr_async_submits; |
8c8bee1d | 1505 | atomic_t async_submit_draining; |
0986fe9e | 1506 | atomic_t nr_async_bios; |
771ed689 | 1507 | atomic_t async_delalloc_pages; |
a4abeea4 | 1508 | atomic_t open_ioctl_trans; |
ce9adaa5 | 1509 | |
3eaa2885 | 1510 | /* |
199c2a9c | 1511 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 1512 | */ |
199c2a9c | 1513 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
1514 | |
1515 | /* | |
199c2a9c MX |
1516 | * all fs/file tree roots in which there are data=ordered extents |
1517 | * pending writeback are added into this list. | |
1518 | * | |
5a3f23d5 CM |
1519 | * these can span multiple transactions and basically include |
1520 | * every dirty data page that isn't from nodatacow | |
1521 | */ | |
199c2a9c | 1522 | struct list_head ordered_roots; |
5a3f23d5 | 1523 | |
573bfb72 | 1524 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
1525 | spinlock_t delalloc_root_lock; |
1526 | /* all fs/file tree roots that have delalloc inodes. */ | |
1527 | struct list_head delalloc_roots; | |
3eaa2885 | 1528 | |
8b712842 CM |
1529 | /* |
1530 | * there is a pool of worker threads for checksumming during writes | |
1531 | * and a pool for checksumming after reads. This is because readers | |
1532 | * can run with FS locks held, and the writers may be waiting for | |
1533 | * those locks. We don't want ordering in the pending list to cause | |
1534 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
1535 | * |
1536 | * A third pool does submit_bio to avoid deadlocking with the other | |
1537 | * two | |
8b712842 | 1538 | */ |
d458b054 QW |
1539 | struct btrfs_workqueue *workers; |
1540 | struct btrfs_workqueue *delalloc_workers; | |
1541 | struct btrfs_workqueue *flush_workers; | |
1542 | struct btrfs_workqueue *endio_workers; | |
1543 | struct btrfs_workqueue *endio_meta_workers; | |
1544 | struct btrfs_workqueue *endio_raid56_workers; | |
8b110e39 | 1545 | struct btrfs_workqueue *endio_repair_workers; |
d458b054 QW |
1546 | struct btrfs_workqueue *rmw_workers; |
1547 | struct btrfs_workqueue *endio_meta_write_workers; | |
1548 | struct btrfs_workqueue *endio_write_workers; | |
1549 | struct btrfs_workqueue *endio_freespace_worker; | |
1550 | struct btrfs_workqueue *submit_workers; | |
1551 | struct btrfs_workqueue *caching_workers; | |
1552 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 1553 | |
247e743c CM |
1554 | /* |
1555 | * fixup workers take dirty pages that didn't properly go through | |
1556 | * the cow mechanism and make them safe to write. It happens | |
1557 | * for the sys_munmap function call path | |
1558 | */ | |
d458b054 QW |
1559 | struct btrfs_workqueue *fixup_workers; |
1560 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b CM |
1561 | |
1562 | /* the extent workers do delayed refs on the extent allocation tree */ | |
1563 | struct btrfs_workqueue *extent_workers; | |
a74a4b97 CM |
1564 | struct task_struct *transaction_kthread; |
1565 | struct task_struct *cleaner_kthread; | |
4543df7e | 1566 | int thread_pool_size; |
8b712842 | 1567 | |
58176a96 | 1568 | struct kobject super_kobj; |
6ab0a202 | 1569 | struct kobject *space_info_kobj; |
29e5be24 | 1570 | struct kobject *device_dir_kobj; |
58176a96 | 1571 | struct completion kobj_unregister; |
e66f709b | 1572 | int do_barriers; |
facda1e7 | 1573 | int closing; |
e02119d5 | 1574 | int log_root_recovering; |
47ab2a6c | 1575 | int open; |
9f5fae2f | 1576 | |
324ae4df | 1577 | u64 total_pinned; |
b9473439 | 1578 | |
e2d84521 MX |
1579 | /* used to keep from writing metadata until there is a nice batch */ |
1580 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 1581 | struct percpu_counter delalloc_bytes; |
e2d84521 | 1582 | s32 dirty_metadata_batch; |
963d678b MX |
1583 | s32 delalloc_batch; |
1584 | ||
0b86a832 CM |
1585 | struct list_head dirty_cowonly_roots; |
1586 | ||
8a4b83cc | 1587 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1588 | |
1589 | /* | |
1590 | * the space_info list is almost entirely read only. It only changes | |
1591 | * when we add a new raid type to the FS, and that happens | |
1592 | * very rarely. RCU is used to protect it. | |
1593 | */ | |
6324fbf3 | 1594 | struct list_head space_info; |
4184ea7f | 1595 | |
b4d7c3c9 LZ |
1596 | struct btrfs_space_info *data_sinfo; |
1597 | ||
5d4f98a2 YZ |
1598 | struct reloc_control *reloc_ctl; |
1599 | ||
fa9c0d79 CM |
1600 | /* data_alloc_cluster is only used in ssd mode */ |
1601 | struct btrfs_free_cluster data_alloc_cluster; | |
1602 | ||
1603 | /* all metadata allocations go through this cluster */ | |
1604 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1605 | |
4cb5300b CM |
1606 | /* auto defrag inodes go here */ |
1607 | spinlock_t defrag_inodes_lock; | |
1608 | struct rb_root defrag_inodes; | |
1609 | atomic_t defrag_running; | |
1610 | ||
de98ced9 MX |
1611 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
1612 | seqlock_t profiles_lock; | |
a46d11a8 ID |
1613 | /* |
1614 | * these three are in extended format (availability of single | |
1615 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
1616 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
1617 | */ | |
d18a2c44 CM |
1618 | u64 avail_data_alloc_bits; |
1619 | u64 avail_metadata_alloc_bits; | |
1620 | u64 avail_system_alloc_bits; | |
788f20eb | 1621 | |
c9e9f97b ID |
1622 | /* restriper state */ |
1623 | spinlock_t balance_lock; | |
1624 | struct mutex balance_mutex; | |
837d5b6e ID |
1625 | atomic_t balance_running; |
1626 | atomic_t balance_pause_req; | |
a7e99c69 | 1627 | atomic_t balance_cancel_req; |
c9e9f97b | 1628 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1629 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1630 | |
97e728d4 JB |
1631 | unsigned data_chunk_allocations; |
1632 | unsigned metadata_ratio; | |
1633 | ||
788f20eb | 1634 | void *bdev_holder; |
acce952b | 1635 | |
a2de733c AJ |
1636 | /* private scrub information */ |
1637 | struct mutex scrub_lock; | |
1638 | atomic_t scrubs_running; | |
1639 | atomic_t scrub_pause_req; | |
1640 | atomic_t scrubs_paused; | |
1641 | atomic_t scrub_cancel_req; | |
1642 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 1643 | int scrub_workers_refcnt; |
d458b054 QW |
1644 | struct btrfs_workqueue *scrub_workers; |
1645 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
1646 | struct btrfs_workqueue *scrub_nocow_workers; | |
a2de733c | 1647 | |
21adbd5c SB |
1648 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1649 | u32 check_integrity_print_mask; | |
1650 | #endif | |
416ac51d AJ |
1651 | /* |
1652 | * quota information | |
1653 | */ | |
1654 | unsigned int quota_enabled:1; | |
1655 | ||
1656 | /* | |
1657 | * quota_enabled only changes state after a commit. This holds the | |
1658 | * next state. | |
1659 | */ | |
1660 | unsigned int pending_quota_state:1; | |
1661 | ||
1662 | /* is qgroup tracking in a consistent state? */ | |
1663 | u64 qgroup_flags; | |
1664 | ||
1665 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1666 | struct rb_root qgroup_tree; | |
fcebe456 | 1667 | struct rb_root qgroup_op_tree; |
416ac51d | 1668 | spinlock_t qgroup_lock; |
fcebe456 JB |
1669 | spinlock_t qgroup_op_lock; |
1670 | atomic_t qgroup_op_seq; | |
416ac51d | 1671 | |
1e8f9158 WS |
1672 | /* |
1673 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1674 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1675 | */ | |
1676 | struct ulist *qgroup_ulist; | |
1677 | ||
f2f6ed3d WS |
1678 | /* protect user change for quota operations */ |
1679 | struct mutex qgroup_ioctl_lock; | |
1680 | ||
416ac51d AJ |
1681 | /* list of dirty qgroups to be written at next commit */ |
1682 | struct list_head dirty_qgroups; | |
1683 | ||
1684 | /* used by btrfs_qgroup_record_ref for an efficient tree traversal */ | |
1685 | u64 qgroup_seq; | |
21adbd5c | 1686 | |
2f232036 JS |
1687 | /* qgroup rescan items */ |
1688 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1689 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1690 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1691 | struct completion qgroup_rescan_completion; |
b382a324 | 1692 | struct btrfs_work qgroup_rescan_work; |
2f232036 | 1693 | |
acce952b | 1694 | /* filesystem state */ |
87533c47 | 1695 | unsigned long fs_state; |
16cdcec7 MX |
1696 | |
1697 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1698 | |
90519d66 AJ |
1699 | /* readahead tree */ |
1700 | spinlock_t reada_lock; | |
1701 | struct radix_tree_root reada_tree; | |
531f4b1a | 1702 | |
f28491e0 JB |
1703 | /* Extent buffer radix tree */ |
1704 | spinlock_t buffer_lock; | |
1705 | struct radix_tree_root buffer_radix; | |
1706 | ||
af31f5e5 CM |
1707 | /* next backup root to be overwritten */ |
1708 | int backup_root_index; | |
5af3e8cc SB |
1709 | |
1710 | int num_tolerated_disk_barrier_failures; | |
e922e087 SB |
1711 | |
1712 | /* device replace state */ | |
1713 | struct btrfs_dev_replace dev_replace; | |
5ac00add SB |
1714 | |
1715 | atomic_t mutually_exclusive_operation_running; | |
803b2f54 | 1716 | |
c404e0dc MX |
1717 | struct percpu_counter bio_counter; |
1718 | wait_queue_head_t replace_wait; | |
1719 | ||
803b2f54 | 1720 | struct semaphore uuid_tree_rescan_sem; |
70f80175 | 1721 | unsigned int update_uuid_tree_gen:1; |
21c7e756 MX |
1722 | |
1723 | /* Used to reclaim the metadata space in the background. */ | |
1724 | struct work_struct async_reclaim_work; | |
47ab2a6c JB |
1725 | |
1726 | spinlock_t unused_bgs_lock; | |
1727 | struct list_head unused_bgs; | |
324ae4df | 1728 | }; |
0b86a832 | 1729 | |
8257b2dc MX |
1730 | struct btrfs_subvolume_writers { |
1731 | struct percpu_counter counter; | |
1732 | wait_queue_head_t wait; | |
1733 | }; | |
1734 | ||
27cdeb70 MX |
1735 | /* |
1736 | * The state of btrfs root | |
1737 | */ | |
1738 | /* | |
1739 | * btrfs_record_root_in_trans is a multi-step process, | |
1740 | * and it can race with the balancing code. But the | |
1741 | * race is very small, and only the first time the root | |
1742 | * is added to each transaction. So IN_TRANS_SETUP | |
1743 | * is used to tell us when more checks are required | |
1744 | */ | |
1745 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 | |
1746 | #define BTRFS_ROOT_REF_COWS 1 | |
1747 | #define BTRFS_ROOT_TRACK_DIRTY 2 | |
1748 | #define BTRFS_ROOT_IN_RADIX 3 | |
1749 | #define BTRFS_ROOT_DUMMY_ROOT 4 | |
1750 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 5 | |
1751 | #define BTRFS_ROOT_DEFRAG_RUNNING 6 | |
1752 | #define BTRFS_ROOT_FORCE_COW 7 | |
1753 | #define BTRFS_ROOT_MULTI_LOG_TASKS 8 | |
1754 | ||
9f5fae2f CM |
1755 | /* |
1756 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1757 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1758 | */ |
1759 | struct btrfs_root { | |
5f39d397 | 1760 | struct extent_buffer *node; |
925baedd | 1761 | |
5f39d397 | 1762 | struct extent_buffer *commit_root; |
e02119d5 | 1763 | struct btrfs_root *log_root; |
1a40e23b | 1764 | struct btrfs_root *reloc_root; |
31153d81 | 1765 | |
27cdeb70 | 1766 | unsigned long state; |
62e2749e CM |
1767 | struct btrfs_root_item root_item; |
1768 | struct btrfs_key root_key; | |
9f5fae2f | 1769 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1770 | struct extent_io_tree dirty_log_pages; |
1771 | ||
58176a96 JB |
1772 | struct kobject root_kobj; |
1773 | struct completion kobj_unregister; | |
a2135011 | 1774 | struct mutex objectid_mutex; |
7237f183 | 1775 | |
f0486c68 YZ |
1776 | spinlock_t accounting_lock; |
1777 | struct btrfs_block_rsv *block_rsv; | |
1778 | ||
581bb050 | 1779 | /* free ino cache stuff */ |
581bb050 | 1780 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1781 | enum btrfs_caching_type ino_cache_state; |
1782 | spinlock_t ino_cache_lock; | |
1783 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1784 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1785 | u64 ino_cache_progress; |
1786 | struct inode *ino_cache_inode; | |
581bb050 | 1787 | |
e02119d5 | 1788 | struct mutex log_mutex; |
7237f183 YZ |
1789 | wait_queue_head_t log_writer_wait; |
1790 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1791 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1792 | atomic_t log_writers; |
1793 | atomic_t log_commit[2]; | |
2ecb7923 | 1794 | atomic_t log_batch; |
bb14a59b | 1795 | int log_transid; |
d1433deb MX |
1796 | /* No matter the commit succeeds or not*/ |
1797 | int log_transid_committed; | |
1798 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1799 | int last_log_commit; |
ff782e0a | 1800 | pid_t log_start_pid; |
ea8c2819 | 1801 | |
0f7d52f4 CM |
1802 | u64 objectid; |
1803 | u64 last_trans; | |
5f39d397 CM |
1804 | |
1805 | /* data allocations are done in sectorsize units */ | |
1806 | u32 sectorsize; | |
1807 | ||
1808 | /* node allocations are done in nodesize units */ | |
1809 | u32 nodesize; | |
1810 | ||
87ee04eb CM |
1811 | u32 stripesize; |
1812 | ||
9f5fae2f | 1813 | u32 type; |
13a8a7c8 YZ |
1814 | |
1815 | u64 highest_objectid; | |
7585717f | 1816 | |
faa2dbf0 JB |
1817 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
1818 | u64 alloc_bytenr; | |
1819 | #endif | |
1820 | ||
3f157a2f | 1821 | u64 defrag_trans_start; |
6702ed49 | 1822 | struct btrfs_key defrag_progress; |
0ef3e66b | 1823 | struct btrfs_key defrag_max; |
58176a96 | 1824 | char *name; |
0b86a832 CM |
1825 | |
1826 | /* the dirty list is only used by non-reference counted roots */ | |
1827 | struct list_head dirty_list; | |
7b128766 | 1828 | |
5d4f98a2 YZ |
1829 | struct list_head root_list; |
1830 | ||
2ab28f32 JB |
1831 | spinlock_t log_extents_lock[2]; |
1832 | struct list_head logged_list[2]; | |
1833 | ||
d68fc57b | 1834 | spinlock_t orphan_lock; |
8a35d95f | 1835 | atomic_t orphan_inodes; |
d68fc57b | 1836 | struct btrfs_block_rsv *orphan_block_rsv; |
d68fc57b | 1837 | int orphan_cleanup_state; |
3394e160 | 1838 | |
5d4f98a2 YZ |
1839 | spinlock_t inode_lock; |
1840 | /* red-black tree that keeps track of in-memory inodes */ | |
1841 | struct rb_root inode_tree; | |
1842 | ||
16cdcec7 MX |
1843 | /* |
1844 | * radix tree that keeps track of delayed nodes of every inode, | |
1845 | * protected by inode_lock | |
1846 | */ | |
1847 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1848 | /* |
1849 | * right now this just gets used so that a root has its own devid | |
1850 | * for stat. It may be used for more later | |
1851 | */ | |
0ee5dc67 | 1852 | dev_t anon_dev; |
f1ebcc74 | 1853 | |
5f3ab90a | 1854 | spinlock_t root_item_lock; |
b0feb9d9 | 1855 | atomic_t refs; |
eb73c1b7 | 1856 | |
573bfb72 | 1857 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1858 | spinlock_t delalloc_lock; |
1859 | /* | |
1860 | * all of the inodes that have delalloc bytes. It is possible for | |
1861 | * this list to be empty even when there is still dirty data=ordered | |
1862 | * extents waiting to finish IO. | |
1863 | */ | |
1864 | struct list_head delalloc_inodes; | |
1865 | struct list_head delalloc_root; | |
1866 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1867 | |
1868 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1869 | /* |
1870 | * this is used by the balancing code to wait for all the pending | |
1871 | * ordered extents | |
1872 | */ | |
1873 | spinlock_t ordered_extent_lock; | |
1874 | ||
1875 | /* | |
1876 | * all of the data=ordered extents pending writeback | |
1877 | * these can span multiple transactions and basically include | |
1878 | * every dirty data page that isn't from nodatacow | |
1879 | */ | |
1880 | struct list_head ordered_extents; | |
1881 | struct list_head ordered_root; | |
1882 | u64 nr_ordered_extents; | |
2c686537 DS |
1883 | |
1884 | /* | |
1885 | * Number of currently running SEND ioctls to prevent | |
1886 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1887 | */ | |
1888 | int send_in_progress; | |
8257b2dc MX |
1889 | struct btrfs_subvolume_writers *subv_writers; |
1890 | atomic_t will_be_snapshoted; | |
62e2749e CM |
1891 | }; |
1892 | ||
4cb5300b CM |
1893 | struct btrfs_ioctl_defrag_range_args { |
1894 | /* start of the defrag operation */ | |
1895 | __u64 start; | |
1896 | ||
1897 | /* number of bytes to defrag, use (u64)-1 to say all */ | |
1898 | __u64 len; | |
1899 | ||
1900 | /* | |
1901 | * flags for the operation, which can include turning | |
1902 | * on compression for this one defrag | |
1903 | */ | |
1904 | __u64 flags; | |
1905 | ||
1906 | /* | |
1907 | * any extent bigger than this will be considered | |
1908 | * already defragged. Use 0 to take the kernel default | |
1909 | * Use 1 to say every single extent must be rewritten | |
1910 | */ | |
1911 | __u32 extent_thresh; | |
1912 | ||
1913 | /* | |
1914 | * which compression method to use if turning on compression | |
1915 | * for this defrag operation. If unspecified, zlib will | |
1916 | * be used | |
1917 | */ | |
1918 | __u32 compress_type; | |
1919 | ||
1920 | /* spare for later */ | |
1921 | __u32 unused[4]; | |
1922 | }; | |
1923 | ||
1924 | ||
1e1d2701 CM |
1925 | /* |
1926 | * inode items have the data typically returned from stat and store other | |
1927 | * info about object characteristics. There is one for every file and dir in | |
1928 | * the FS | |
1929 | */ | |
9078a3e1 | 1930 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af | 1931 | #define BTRFS_INODE_REF_KEY 12 |
f186373f | 1932 | #define BTRFS_INODE_EXTREF_KEY 13 |
0660b5af CM |
1933 | #define BTRFS_XATTR_ITEM_KEY 24 |
1934 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 1935 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
1936 | |
1937 | /* | |
1938 | * dir items are the name -> inode pointers in a directory. There is one | |
1939 | * for every name in a directory. | |
1940 | */ | |
0660b5af CM |
1941 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
1942 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
1943 | #define BTRFS_DIR_ITEM_KEY 84 | |
1944 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 1945 | /* |
9078a3e1 | 1946 | * extent data is for file data |
1e1d2701 | 1947 | */ |
0660b5af | 1948 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 1949 | |
f254e52c | 1950 | /* |
d20f7043 CM |
1951 | * extent csums are stored in a separate tree and hold csums for |
1952 | * an entire extent on disk. | |
f254e52c | 1953 | */ |
d20f7043 | 1954 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 1955 | |
1e1d2701 | 1956 | /* |
d4a78947 | 1957 | * root items point to tree roots. They are typically in the root |
1e1d2701 CM |
1958 | * tree used by the super block to find all the other trees |
1959 | */ | |
0660b5af CM |
1960 | #define BTRFS_ROOT_ITEM_KEY 132 |
1961 | ||
1962 | /* | |
1963 | * root backrefs tie subvols and snapshots to the directory entries that | |
1964 | * reference them | |
1965 | */ | |
1966 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1967 | ||
1968 | /* | |
1969 | * root refs make a fast index for listing all of the snapshots and | |
1970 | * subvolumes referenced by a given root. They point directly to the | |
1971 | * directory item in the root that references the subvol | |
1972 | */ | |
1973 | #define BTRFS_ROOT_REF_KEY 156 | |
1974 | ||
1e1d2701 CM |
1975 | /* |
1976 | * extent items are in the extent map tree. These record which blocks | |
1977 | * are used, and how many references there are to each block | |
1978 | */ | |
0660b5af | 1979 | #define BTRFS_EXTENT_ITEM_KEY 168 |
5d4f98a2 | 1980 | |
3173a18f JB |
1981 | /* |
1982 | * The same as the BTRFS_EXTENT_ITEM_KEY, except it's metadata we already know | |
1983 | * the length, so we save the level in key->offset instead of the length. | |
1984 | */ | |
1985 | #define BTRFS_METADATA_ITEM_KEY 169 | |
1986 | ||
5d4f98a2 YZ |
1987 | #define BTRFS_TREE_BLOCK_REF_KEY 176 |
1988 | ||
1989 | #define BTRFS_EXTENT_DATA_REF_KEY 178 | |
1990 | ||
1991 | #define BTRFS_EXTENT_REF_V0_KEY 180 | |
1992 | ||
1993 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 | |
1994 | ||
1995 | #define BTRFS_SHARED_DATA_REF_KEY 184 | |
9078a3e1 CM |
1996 | |
1997 | /* | |
1998 | * block groups give us hints into the extent allocation trees. Which | |
1999 | * blocks are free etc etc | |
2000 | */ | |
0660b5af | 2001 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 2002 | |
0660b5af CM |
2003 | #define BTRFS_DEV_EXTENT_KEY 204 |
2004 | #define BTRFS_DEV_ITEM_KEY 216 | |
2005 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 2006 | |
630dc772 AJ |
2007 | /* |
2008 | * Records the overall state of the qgroups. | |
2009 | * There's only one instance of this key present, | |
2010 | * (0, BTRFS_QGROUP_STATUS_KEY, 0) | |
2011 | */ | |
2012 | #define BTRFS_QGROUP_STATUS_KEY 240 | |
2013 | /* | |
2014 | * Records the currently used space of the qgroup. | |
2015 | * One key per qgroup, (0, BTRFS_QGROUP_INFO_KEY, qgroupid). | |
2016 | */ | |
2017 | #define BTRFS_QGROUP_INFO_KEY 242 | |
2018 | /* | |
2019 | * Contains the user configured limits for the qgroup. | |
2020 | * One key per qgroup, (0, BTRFS_QGROUP_LIMIT_KEY, qgroupid). | |
2021 | */ | |
2022 | #define BTRFS_QGROUP_LIMIT_KEY 244 | |
2023 | /* | |
2024 | * Records the child-parent relationship of qgroups. For | |
2025 | * each relation, 2 keys are present: | |
2026 | * (childid, BTRFS_QGROUP_RELATION_KEY, parentid) | |
2027 | * (parentid, BTRFS_QGROUP_RELATION_KEY, childid) | |
2028 | */ | |
2029 | #define BTRFS_QGROUP_RELATION_KEY 246 | |
2030 | ||
0940ebf6 ID |
2031 | #define BTRFS_BALANCE_ITEM_KEY 248 |
2032 | ||
733f4fbb SB |
2033 | /* |
2034 | * Persistantly stores the io stats in the device tree. | |
2035 | * One key for all stats, (0, BTRFS_DEV_STATS_KEY, devid). | |
2036 | */ | |
2037 | #define BTRFS_DEV_STATS_KEY 249 | |
2038 | ||
a2bff640 SB |
2039 | /* |
2040 | * Persistantly stores the device replace state in the device tree. | |
2041 | * The key is built like this: (0, BTRFS_DEV_REPLACE_KEY, 0). | |
2042 | */ | |
2043 | #define BTRFS_DEV_REPLACE_KEY 250 | |
2044 | ||
07b30a49 SB |
2045 | /* |
2046 | * Stores items that allow to quickly map UUIDs to something else. | |
2047 | * These items are part of the filesystem UUID tree. | |
2048 | * The key is built like this: | |
2049 | * (UUID_upper_64_bits, BTRFS_UUID_KEY*, UUID_lower_64_bits). | |
2050 | */ | |
2051 | #if BTRFS_UUID_SIZE != 16 | |
2052 | #error "UUID items require BTRFS_UUID_SIZE == 16!" | |
2053 | #endif | |
2054 | #define BTRFS_UUID_KEY_SUBVOL 251 /* for UUIDs assigned to subvols */ | |
2055 | #define BTRFS_UUID_KEY_RECEIVED_SUBVOL 252 /* for UUIDs assigned to | |
2056 | * received subvols */ | |
2057 | ||
1e1d2701 CM |
2058 | /* |
2059 | * string items are for debugging. They just store a short string of | |
2060 | * data in the FS | |
2061 | */ | |
9078a3e1 CM |
2062 | #define BTRFS_STRING_ITEM_KEY 253 |
2063 | ||
0942caa3 DS |
2064 | /* |
2065 | * Flags for mount options. | |
2066 | * | |
2067 | * Note: don't forget to add new options to btrfs_show_options() | |
2068 | */ | |
21ad10cf CM |
2069 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
2070 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
2071 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 2072 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 2073 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 2074 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 2075 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 2076 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 2077 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 2078 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 2079 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 2080 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 2081 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 2082 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 2083 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 2084 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 2085 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 2086 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
af31f5e5 | 2087 | #define BTRFS_MOUNT_RECOVERY (1 << 18) |
9555c6c1 | 2088 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
2089 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
2090 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 2091 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 2092 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
3818aea2 | 2093 | #define BTRFS_MOUNT_CHANGE_INODE_CACHE (1 << 24) |
b6cda9bc | 2094 | |
8b87dc17 | 2095 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
95ac567a | 2096 | #define BTRFS_DEFAULT_MAX_INLINE (8192) |
8b87dc17 | 2097 | |
b6cda9bc CM |
2098 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
2099 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 2100 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
b6cda9bc CM |
2101 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ |
2102 | BTRFS_MOUNT_##opt) | |
9d89ce65 WS |
2103 | #define btrfs_set_and_info(root, opt, fmt, args...) \ |
2104 | { \ | |
2105 | if (!btrfs_test_opt(root, opt)) \ | |
2106 | btrfs_info(root->fs_info, fmt, ##args); \ | |
2107 | btrfs_set_opt(root->fs_info->mount_opt, opt); \ | |
2108 | } | |
2109 | ||
2110 | #define btrfs_clear_and_info(root, opt, fmt, args...) \ | |
2111 | { \ | |
2112 | if (btrfs_test_opt(root, opt)) \ | |
2113 | btrfs_info(root->fs_info, fmt, ##args); \ | |
2114 | btrfs_clear_opt(root->fs_info->mount_opt, opt); \ | |
2115 | } | |
2116 | ||
b98b6767 Y |
2117 | /* |
2118 | * Inode flags | |
2119 | */ | |
fdebe2bd Y |
2120 | #define BTRFS_INODE_NODATASUM (1 << 0) |
2121 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
2122 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 2123 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 2124 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
2125 | #define BTRFS_INODE_SYNC (1 << 5) |
2126 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
2127 | #define BTRFS_INODE_APPEND (1 << 7) | |
2128 | #define BTRFS_INODE_NODUMP (1 << 8) | |
2129 | #define BTRFS_INODE_NOATIME (1 << 9) | |
2130 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 2131 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 2132 | |
08fe4db1 LZ |
2133 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
2134 | ||
cfed81a0 CM |
2135 | struct btrfs_map_token { |
2136 | struct extent_buffer *eb; | |
2137 | char *kaddr; | |
2138 | unsigned long offset; | |
2139 | }; | |
2140 | ||
2141 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) | |
2142 | { | |
ad914559 | 2143 | token->kaddr = NULL; |
cfed81a0 CM |
2144 | } |
2145 | ||
5f39d397 CM |
2146 | /* some macros to generate set/get funcs for the struct fields. This |
2147 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
2148 | * one for u8: | |
2149 | */ | |
2150 | #define le8_to_cpu(v) (v) | |
2151 | #define cpu_to_le8(v) (v) | |
2152 | #define __le8 u8 | |
2153 | ||
2154 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
2155 | read_extent_buffer(eb, (char *)(result), \ | |
2156 | ((unsigned long)(ptr)) + \ | |
2157 | offsetof(type, member), \ | |
2158 | sizeof(((type *)0)->member))) | |
2159 | ||
2160 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
2161 | write_extent_buffer(eb, (char *)(result), \ | |
2162 | ((unsigned long)(ptr)) + \ | |
2163 | offsetof(type, member), \ | |
2164 | sizeof(((type *)0)->member))) | |
2165 | ||
18077bb4 LZ |
2166 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
2167 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
2168 | unsigned long off, \ | |
2169 | struct btrfs_map_token *token); \ | |
2170 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
2171 | unsigned long off, u##bits val, \ | |
2172 | struct btrfs_map_token *token); \ | |
2173 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ | |
2174 | unsigned long off) \ | |
2175 | { \ | |
2176 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
2177 | } \ | |
2178 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ | |
2179 | unsigned long off, u##bits val) \ | |
2180 | { \ | |
2181 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
2182 | } | |
2183 | ||
2184 | DECLARE_BTRFS_SETGET_BITS(8) | |
2185 | DECLARE_BTRFS_SETGET_BITS(16) | |
2186 | DECLARE_BTRFS_SETGET_BITS(32) | |
2187 | DECLARE_BTRFS_SETGET_BITS(64) | |
2188 | ||
5f39d397 | 2189 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
18077bb4 LZ |
2190 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
2191 | { \ | |
2192 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2193 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
2194 | } \ | |
2195 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
2196 | u##bits val) \ | |
2197 | { \ | |
2198 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2199 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
2200 | } \ | |
2201 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ | |
2202 | struct btrfs_map_token *token) \ | |
2203 | { \ | |
2204 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2205 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
2206 | } \ | |
2207 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
2208 | type *s, u##bits val, \ | |
2209 | struct btrfs_map_token *token) \ | |
2210 | { \ | |
2211 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2212 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
2213 | } | |
5f39d397 CM |
2214 | |
2215 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
2216 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
2217 | { \ | |
727011e0 | 2218 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 2219 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 2220 | return res; \ |
5f39d397 CM |
2221 | } \ |
2222 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
2223 | u##bits val) \ | |
2224 | { \ | |
727011e0 | 2225 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 2226 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 2227 | } |
9078a3e1 | 2228 | |
5f39d397 CM |
2229 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
2230 | static inline u##bits btrfs_##name(type *s) \ | |
2231 | { \ | |
2232 | return le##bits##_to_cpu(s->member); \ | |
2233 | } \ | |
2234 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
2235 | { \ | |
2236 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
2237 | } |
2238 | ||
0b86a832 CM |
2239 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
2240 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
2241 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
2242 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
2243 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
2244 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
2245 | start_offset, 64); | |
0b86a832 CM |
2246 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
2247 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
2248 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
2249 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
2250 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 2251 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 2252 | |
8a4b83cc CM |
2253 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
2254 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
2255 | total_bytes, 64); | |
2256 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
2257 | bytes_used, 64); | |
2258 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
2259 | io_align, 32); | |
2260 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
2261 | io_width, 32); | |
2262 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
2263 | sector_size, 32); | |
2264 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
2265 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
2266 | dev_group, 32); | |
2267 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
2268 | seek_speed, 8); | |
2269 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
2270 | bandwidth, 8); | |
2b82032c YZ |
2271 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
2272 | generation, 64); | |
8a4b83cc | 2273 | |
410ba3a2 | 2274 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 2275 | { |
410ba3a2 | 2276 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
2277 | } |
2278 | ||
1473b24e | 2279 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 2280 | { |
1473b24e | 2281 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
2282 | } |
2283 | ||
e17cade2 | 2284 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
2285 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
2286 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
2287 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
2288 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
2289 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
2290 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
2291 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 2292 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
2293 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
2294 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
2295 | ||
e17cade2 CM |
2296 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
2297 | { | |
2298 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
2299 | } | |
2300 | ||
2301 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
2302 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
2303 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
2304 | stripe_len, 64); | |
2305 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
2306 | io_align, 32); | |
2307 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
2308 | io_width, 32); | |
2309 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
2310 | sector_size, 32); | |
2311 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
2312 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
2313 | num_stripes, 16); | |
321aecc6 CM |
2314 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
2315 | sub_stripes, 16); | |
0b86a832 CM |
2316 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
2317 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
2318 | ||
2319 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
2320 | int nr) | |
2321 | { | |
2322 | unsigned long offset = (unsigned long)c; | |
2323 | offset += offsetof(struct btrfs_chunk, stripe); | |
2324 | offset += nr * sizeof(struct btrfs_stripe); | |
2325 | return (struct btrfs_stripe *)offset; | |
2326 | } | |
2327 | ||
a443755f CM |
2328 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
2329 | { | |
2330 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
2331 | } | |
2332 | ||
0b86a832 CM |
2333 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
2334 | struct btrfs_chunk *c, int nr) | |
2335 | { | |
2336 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
2337 | } | |
2338 | ||
0b86a832 CM |
2339 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
2340 | struct btrfs_chunk *c, int nr) | |
2341 | { | |
2342 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
2343 | } | |
2344 | ||
5f39d397 CM |
2345 | /* struct btrfs_block_group_item */ |
2346 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
2347 | used, 64); | |
2348 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
2349 | used, 64); | |
0b86a832 CM |
2350 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
2351 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
2352 | |
2353 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
2354 | struct btrfs_block_group_item, chunk_objectid, 64); |
2355 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
2356 | struct btrfs_block_group_item, flags, 64); | |
2357 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
2358 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 2359 | |
3954401f CM |
2360 | /* struct btrfs_inode_ref */ |
2361 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 2362 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 2363 | |
f186373f MF |
2364 | /* struct btrfs_inode_extref */ |
2365 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
2366 | parent_objectid, 64); | |
2367 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
2368 | name_len, 16); | |
2369 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
2370 | ||
5f39d397 CM |
2371 | /* struct btrfs_inode_item */ |
2372 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 2373 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 2374 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 2375 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 2376 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
2377 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
2378 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
2379 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
2380 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
2381 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 2382 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 2383 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
2384 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
2385 | generation, 64); | |
2386 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
2387 | sequence, 64); | |
2388 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
2389 | transid, 64); | |
2390 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
2391 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
2392 | nbytes, 64); | |
2393 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
2394 | block_group, 64); | |
2395 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
2396 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
2397 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
2398 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
2399 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
2400 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
1e1d2701 | 2401 | |
0b86a832 | 2402 | static inline struct btrfs_timespec * |
5f39d397 | 2403 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2404 | { |
5f39d397 CM |
2405 | unsigned long ptr = (unsigned long)inode_item; |
2406 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 2407 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2408 | } |
2409 | ||
0b86a832 | 2410 | static inline struct btrfs_timespec * |
5f39d397 | 2411 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2412 | { |
5f39d397 CM |
2413 | unsigned long ptr = (unsigned long)inode_item; |
2414 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 2415 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2416 | } |
2417 | ||
0b86a832 | 2418 | static inline struct btrfs_timespec * |
5f39d397 | 2419 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2420 | { |
5f39d397 CM |
2421 | unsigned long ptr = (unsigned long)inode_item; |
2422 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 2423 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2424 | } |
2425 | ||
0b86a832 CM |
2426 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
2427 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
2428 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
2429 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 2430 | |
0b86a832 | 2431 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
2432 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
2433 | chunk_tree, 64); | |
2434 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
2435 | chunk_objectid, 64); | |
2436 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
2437 | chunk_offset, 64); | |
0b86a832 CM |
2438 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
2439 | ||
231e88f4 | 2440 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
2441 | { |
2442 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 2443 | return (unsigned long)dev + ptr; |
e17cade2 CM |
2444 | } |
2445 | ||
5d4f98a2 YZ |
2446 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
2447 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
2448 | generation, 64); | |
2449 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 2450 | |
5d4f98a2 YZ |
2451 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
2452 | ||
2453 | ||
2454 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
2455 | ||
2456 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
2457 | struct btrfs_tree_block_info *item, | |
2458 | struct btrfs_disk_key *key) | |
2459 | { | |
2460 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
2461 | } | |
2462 | ||
2463 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
2464 | struct btrfs_tree_block_info *item, | |
2465 | struct btrfs_disk_key *key) | |
2466 | { | |
2467 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
2468 | } | |
e20d96d6 | 2469 | |
5d4f98a2 YZ |
2470 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
2471 | root, 64); | |
2472 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
2473 | objectid, 64); | |
2474 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
2475 | offset, 64); | |
2476 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
2477 | count, 32); | |
2478 | ||
2479 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
2480 | count, 32); | |
2481 | ||
2482 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
2483 | type, 8); | |
2484 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
2485 | offset, 64); | |
2486 | ||
2487 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
2488 | { | |
2489 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
2490 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
2491 | return sizeof(struct btrfs_extent_inline_ref); | |
2492 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
2493 | return sizeof(struct btrfs_shared_data_ref) + | |
2494 | sizeof(struct btrfs_extent_inline_ref); | |
2495 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
2496 | return sizeof(struct btrfs_extent_data_ref) + | |
2497 | offsetof(struct btrfs_extent_inline_ref, offset); | |
2498 | BUG(); | |
2499 | return 0; | |
2500 | } | |
2501 | ||
2502 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
2503 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
2504 | generation, 64); | |
2505 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
2506 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 2507 | |
5f39d397 CM |
2508 | /* struct btrfs_node */ |
2509 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 2510 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
2511 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
2512 | blockptr, 64); | |
2513 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
2514 | generation, 64); | |
e20d96d6 | 2515 | |
5f39d397 | 2516 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 2517 | { |
5f39d397 CM |
2518 | unsigned long ptr; |
2519 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2520 | sizeof(struct btrfs_key_ptr) * nr; | |
2521 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
2522 | } |
2523 | ||
5f39d397 CM |
2524 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
2525 | int nr, u64 val) | |
cf27e1ee | 2526 | { |
5f39d397 CM |
2527 | unsigned long ptr; |
2528 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2529 | sizeof(struct btrfs_key_ptr) * nr; | |
2530 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
2531 | } |
2532 | ||
74493f7a CM |
2533 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
2534 | { | |
2535 | unsigned long ptr; | |
2536 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2537 | sizeof(struct btrfs_key_ptr) * nr; | |
2538 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
2539 | } | |
2540 | ||
2541 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
2542 | int nr, u64 val) | |
2543 | { | |
2544 | unsigned long ptr; | |
2545 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2546 | sizeof(struct btrfs_key_ptr) * nr; | |
2547 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
2548 | } | |
2549 | ||
810191ff | 2550 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 2551 | { |
5f39d397 CM |
2552 | return offsetof(struct btrfs_node, ptrs) + |
2553 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
2554 | } |
2555 | ||
e644d021 CM |
2556 | void btrfs_node_key(struct extent_buffer *eb, |
2557 | struct btrfs_disk_key *disk_key, int nr); | |
2558 | ||
5f39d397 CM |
2559 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
2560 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 2561 | { |
5f39d397 CM |
2562 | unsigned long ptr; |
2563 | ptr = btrfs_node_key_ptr_offset(nr); | |
2564 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
2565 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
2566 | } |
2567 | ||
5f39d397 CM |
2568 | /* struct btrfs_item */ |
2569 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
2570 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
2571 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
2572 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 2573 | |
5f39d397 | 2574 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 2575 | { |
5f39d397 CM |
2576 | return offsetof(struct btrfs_leaf, items) + |
2577 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
2578 | } |
2579 | ||
dd3cc16b | 2580 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 2581 | { |
5f39d397 | 2582 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
2583 | } |
2584 | ||
5f39d397 CM |
2585 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
2586 | struct btrfs_item *item) | |
0783fcfc | 2587 | { |
5f39d397 | 2588 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
2589 | } |
2590 | ||
5f39d397 | 2591 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2592 | { |
dd3cc16b | 2593 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
2594 | } |
2595 | ||
5f39d397 | 2596 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2597 | { |
dd3cc16b | 2598 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
2599 | } |
2600 | ||
5f39d397 | 2601 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2602 | { |
dd3cc16b | 2603 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
2604 | } |
2605 | ||
5f39d397 CM |
2606 | static inline void btrfs_item_key(struct extent_buffer *eb, |
2607 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2608 | { |
dd3cc16b | 2609 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 2610 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
2611 | } |
2612 | ||
5f39d397 CM |
2613 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
2614 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2615 | { |
dd3cc16b | 2616 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 2617 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
2618 | } |
2619 | ||
e02119d5 CM |
2620 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
2621 | ||
0660b5af CM |
2622 | /* |
2623 | * struct btrfs_root_ref | |
2624 | */ | |
2625 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
2626 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
2627 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
2628 | ||
5f39d397 | 2629 | /* struct btrfs_dir_item */ |
5103e947 | 2630 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
2631 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
2632 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 2633 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
2634 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
2635 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
2636 | data_len, 16); | |
2637 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
2638 | name_len, 16); | |
2639 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
2640 | transid, 64); | |
1d4f6404 | 2641 | |
5f39d397 CM |
2642 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
2643 | struct btrfs_dir_item *item, | |
2644 | struct btrfs_disk_key *key) | |
1d4f6404 | 2645 | { |
5f39d397 | 2646 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
2647 | } |
2648 | ||
5f39d397 CM |
2649 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
2650 | struct btrfs_dir_item *item, | |
2651 | struct btrfs_disk_key *key) | |
a8a2ee0c | 2652 | { |
5f39d397 | 2653 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
2654 | } |
2655 | ||
0af3d00b JB |
2656 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
2657 | num_entries, 64); | |
2658 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
2659 | num_bitmaps, 64); | |
2660 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
2661 | generation, 64); | |
2662 | ||
2663 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
2664 | struct btrfs_free_space_header *h, | |
2665 | struct btrfs_disk_key *key) | |
2666 | { | |
2667 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2668 | } | |
2669 | ||
2670 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
2671 | struct btrfs_free_space_header *h, | |
2672 | struct btrfs_disk_key *key) | |
2673 | { | |
2674 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2675 | } | |
2676 | ||
5f39d397 CM |
2677 | /* struct btrfs_disk_key */ |
2678 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2679 | objectid, 64); | |
2680 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2681 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2682 | |
e2fa7227 CM |
2683 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
2684 | struct btrfs_disk_key *disk) | |
2685 | { | |
2686 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2687 | cpu->type = disk->type; |
e2fa7227 CM |
2688 | cpu->objectid = le64_to_cpu(disk->objectid); |
2689 | } | |
2690 | ||
2691 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
2692 | struct btrfs_key *cpu) | |
2693 | { | |
2694 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2695 | disk->type = cpu->type; |
e2fa7227 CM |
2696 | disk->objectid = cpu_to_le64(cpu->objectid); |
2697 | } | |
2698 | ||
5f39d397 CM |
2699 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
2700 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2701 | { |
5f39d397 CM |
2702 | struct btrfs_disk_key disk_key; |
2703 | btrfs_node_key(eb, &disk_key, nr); | |
2704 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2705 | } |
2706 | ||
5f39d397 CM |
2707 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
2708 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2709 | { |
5f39d397 CM |
2710 | struct btrfs_disk_key disk_key; |
2711 | btrfs_item_key(eb, &disk_key, nr); | |
2712 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2713 | } |
2714 | ||
5f39d397 CM |
2715 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
2716 | struct btrfs_dir_item *item, | |
2717 | struct btrfs_key *key) | |
4d775673 | 2718 | { |
5f39d397 CM |
2719 | struct btrfs_disk_key disk_key; |
2720 | btrfs_dir_item_key(eb, item, &disk_key); | |
2721 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2722 | } |
2723 | ||
58176a96 | 2724 | |
5f39d397 | 2725 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 2726 | { |
5f39d397 | 2727 | return key->type; |
3768f368 CM |
2728 | } |
2729 | ||
5f39d397 | 2730 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2731 | { |
5f39d397 | 2732 | key->type = val; |
3768f368 CM |
2733 | } |
2734 | ||
5f39d397 | 2735 | /* struct btrfs_header */ |
db94535d | 2736 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2737 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2738 | generation, 64); | |
2739 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2740 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2741 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2742 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2743 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2744 | generation, 64); | |
2745 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2746 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2747 | nritems, 32); | |
2748 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2749 | |
63b10fc4 CM |
2750 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
2751 | { | |
2752 | return (btrfs_header_flags(eb) & flag) == flag; | |
2753 | } | |
2754 | ||
2755 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2756 | { | |
2757 | u64 flags = btrfs_header_flags(eb); | |
2758 | btrfs_set_header_flags(eb, flags | flag); | |
2759 | return (flags & flag) == flag; | |
2760 | } | |
2761 | ||
2762 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2763 | { | |
2764 | u64 flags = btrfs_header_flags(eb); | |
2765 | btrfs_set_header_flags(eb, flags & ~flag); | |
2766 | return (flags & flag) == flag; | |
2767 | } | |
2768 | ||
5d4f98a2 YZ |
2769 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2770 | { | |
2771 | u64 flags = btrfs_header_flags(eb); | |
2772 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2773 | } | |
2774 | ||
2775 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2776 | int rev) | |
2777 | { | |
2778 | u64 flags = btrfs_header_flags(eb); | |
2779 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2780 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2781 | btrfs_set_header_flags(eb, flags); | |
2782 | } | |
2783 | ||
0a4e5586 | 2784 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2785 | { |
fba6aa75 | 2786 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2787 | } |
2788 | ||
b308bc2f | 2789 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
e17cade2 | 2790 | { |
b308bc2f | 2791 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2792 | } |
2793 | ||
5f39d397 | 2794 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2795 | { |
d397712b | 2796 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2797 | } |
2798 | ||
5f39d397 | 2799 | /* struct btrfs_root_item */ |
84234f3a YZ |
2800 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2801 | generation, 64); | |
5f39d397 | 2802 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2803 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2804 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2805 | |
84234f3a YZ |
2806 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2807 | generation, 64); | |
db94535d CM |
2808 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2809 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2810 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2811 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2812 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2813 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2814 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2815 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2816 | last_snapshot, 64); | |
8ea05e3a AB |
2817 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2818 | generation_v2, 64); | |
2819 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2820 | ctransid, 64); | |
2821 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2822 | otransid, 64); | |
2823 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2824 | stransid, 64); | |
2825 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2826 | rtransid, 64); | |
123abc88 | 2827 | |
b83cc969 LZ |
2828 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2829 | { | |
6ed3cf2c | 2830 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2831 | } |
2832 | ||
521e0546 DS |
2833 | static inline bool btrfs_root_dead(struct btrfs_root *root) |
2834 | { | |
2835 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2836 | } | |
2837 | ||
af31f5e5 CM |
2838 | /* struct btrfs_root_backup */ |
2839 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2840 | tree_root, 64); | |
2841 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2842 | tree_root_gen, 64); | |
2843 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2844 | tree_root_level, 8); | |
2845 | ||
2846 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2847 | chunk_root, 64); | |
2848 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2849 | chunk_root_gen, 64); | |
2850 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2851 | chunk_root_level, 8); | |
2852 | ||
2853 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2854 | extent_root, 64); | |
2855 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2856 | extent_root_gen, 64); | |
2857 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2858 | extent_root_level, 8); | |
2859 | ||
2860 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2861 | fs_root, 64); | |
2862 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2863 | fs_root_gen, 64); | |
2864 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2865 | fs_root_level, 8); | |
2866 | ||
2867 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2868 | dev_root, 64); | |
2869 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2870 | dev_root_gen, 64); | |
2871 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2872 | dev_root_level, 8); | |
2873 | ||
2874 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2875 | csum_root, 64); | |
2876 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2877 | csum_root_gen, 64); | |
2878 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2879 | csum_root_level, 8); | |
2880 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2881 | total_bytes, 64); | |
2882 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2883 | bytes_used, 64); | |
2884 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2885 | num_devices, 64); | |
2886 | ||
0940ebf6 ID |
2887 | /* struct btrfs_balance_item */ |
2888 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2889 | |
0940ebf6 ID |
2890 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2891 | struct btrfs_balance_item *bi, | |
2892 | struct btrfs_disk_balance_args *ba) | |
2893 | { | |
2894 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2895 | } | |
2896 | ||
2897 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2898 | struct btrfs_balance_item *bi, | |
2899 | struct btrfs_disk_balance_args *ba) | |
2900 | { | |
2901 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2902 | } | |
2903 | ||
2904 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2905 | struct btrfs_balance_item *bi, | |
2906 | struct btrfs_disk_balance_args *ba) | |
2907 | { | |
2908 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2909 | } | |
2910 | ||
2911 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2912 | struct btrfs_balance_item *bi, | |
2913 | struct btrfs_disk_balance_args *ba) | |
2914 | { | |
2915 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2916 | } | |
2917 | ||
2918 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2919 | struct btrfs_balance_item *bi, | |
2920 | struct btrfs_disk_balance_args *ba) | |
2921 | { | |
2922 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2923 | } | |
2924 | ||
2925 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2926 | struct btrfs_balance_item *bi, | |
2927 | struct btrfs_disk_balance_args *ba) | |
2928 | { | |
2929 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2930 | } | |
2931 | ||
2932 | static inline void | |
2933 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2934 | struct btrfs_disk_balance_args *disk) | |
2935 | { | |
2936 | memset(cpu, 0, sizeof(*cpu)); | |
2937 | ||
2938 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2939 | cpu->usage = le64_to_cpu(disk->usage); | |
2940 | cpu->devid = le64_to_cpu(disk->devid); | |
2941 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2942 | cpu->pend = le64_to_cpu(disk->pend); | |
2943 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2944 | cpu->vend = le64_to_cpu(disk->vend); | |
2945 | cpu->target = le64_to_cpu(disk->target); | |
2946 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2947 | cpu->limit = le64_to_cpu(disk->limit); |
0940ebf6 ID |
2948 | } |
2949 | ||
2950 | static inline void | |
2951 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2952 | struct btrfs_balance_args *cpu) | |
2953 | { | |
2954 | memset(disk, 0, sizeof(*disk)); | |
2955 | ||
2956 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2957 | disk->usage = cpu_to_le64(cpu->usage); | |
2958 | disk->devid = cpu_to_le64(cpu->devid); | |
2959 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2960 | disk->pend = cpu_to_le64(cpu->pend); | |
2961 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2962 | disk->vend = cpu_to_le64(cpu->vend); | |
2963 | disk->target = cpu_to_le64(cpu->target); | |
2964 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2965 | disk->limit = cpu_to_le64(cpu->limit); |
0940ebf6 ID |
2966 | } |
2967 | ||
2968 | /* struct btrfs_super_block */ | |
db94535d | 2969 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2970 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2971 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2972 | generation, 64); | |
2973 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2974 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2975 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2976 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2977 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2978 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2979 | root_level, 8); | |
0b86a832 CM |
2980 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2981 | chunk_root, 64); | |
2982 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2983 | chunk_root_level, 8); |
2984 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2985 | log_root, 64); | |
c3027eb5 CM |
2986 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2987 | log_root_transid, 64); | |
e02119d5 CM |
2988 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2989 | log_root_level, 8); | |
db94535d CM |
2990 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2991 | total_bytes, 64); | |
2992 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2993 | bytes_used, 64); | |
5f39d397 CM |
2994 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2995 | sectorsize, 32); | |
2996 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2997 | nodesize, 32); | |
87ee04eb CM |
2998 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2999 | stripesize, 32); | |
5f39d397 CM |
3000 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
3001 | root_dir_objectid, 64); | |
8a4b83cc CM |
3002 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
3003 | num_devices, 64); | |
f2b636e8 JB |
3004 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
3005 | compat_flags, 64); | |
3006 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 3007 | compat_ro_flags, 64); |
f2b636e8 JB |
3008 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
3009 | incompat_flags, 64); | |
607d432d JB |
3010 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
3011 | csum_type, 16); | |
0af3d00b JB |
3012 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
3013 | cache_generation, 64); | |
3cae210f | 3014 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
3015 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
3016 | uuid_tree_generation, 64); | |
607d432d JB |
3017 | |
3018 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
3019 | { | |
1104a885 DS |
3020 | u16 t = btrfs_super_csum_type(s); |
3021 | /* | |
3022 | * csum type is validated at mount time | |
3023 | */ | |
607d432d JB |
3024 | return btrfs_csum_sizes[t]; |
3025 | } | |
2e635a27 | 3026 | |
5f39d397 | 3027 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 3028 | { |
5f39d397 | 3029 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
3030 | } |
3031 | ||
5f39d397 CM |
3032 | /* struct btrfs_file_extent_item */ |
3033 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
3034 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
3035 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
3036 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
3037 | struct btrfs_file_extent_item, offset, 64); | |
3038 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
3039 | struct btrfs_file_extent_item, generation, 64); | |
3040 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
3041 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
3042 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
3043 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
3044 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
3045 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 3046 | |
d397712b CM |
3047 | static inline unsigned long |
3048 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 3049 | { |
7ec20afb | 3050 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
3051 | } |
3052 | ||
3053 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
3054 | { | |
7ec20afb | 3055 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
3056 | } |
3057 | ||
db94535d CM |
3058 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
3059 | disk_bytenr, 64); | |
5f39d397 CM |
3060 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
3061 | generation, 64); | |
db94535d CM |
3062 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
3063 | disk_num_bytes, 64); | |
5f39d397 CM |
3064 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
3065 | offset, 64); | |
db94535d CM |
3066 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
3067 | num_bytes, 64); | |
c8b97818 CM |
3068 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
3069 | ram_bytes, 64); | |
3070 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
3071 | compression, 8); | |
3072 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
3073 | encryption, 8); | |
3074 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
3075 | other_encoding, 16); | |
3076 | ||
c8b97818 CM |
3077 | /* |
3078 | * this returns the number of bytes used by the item on disk, minus the | |
3079 | * size of any extent headers. If a file is compressed on disk, this is | |
3080 | * the compressed size | |
3081 | */ | |
3082 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
3083 | struct btrfs_item *e) | |
3084 | { | |
7ec20afb | 3085 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 3086 | } |
9f5fae2f | 3087 | |
514ac8ad CM |
3088 | /* this returns the number of file bytes represented by the inline item. |
3089 | * If an item is compressed, this is the uncompressed size | |
3090 | */ | |
3091 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
3092 | int slot, | |
3093 | struct btrfs_file_extent_item *fi) | |
3094 | { | |
3095 | struct btrfs_map_token token; | |
3096 | ||
3097 | btrfs_init_map_token(&token); | |
3098 | /* | |
3099 | * return the space used on disk if this item isn't | |
3100 | * compressed or encoded | |
3101 | */ | |
3102 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && | |
3103 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && | |
3104 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { | |
3105 | return btrfs_file_extent_inline_item_len(eb, | |
3106 | btrfs_item_nr(slot)); | |
3107 | } | |
3108 | ||
3109 | /* otherwise use the ram bytes field */ | |
3110 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); | |
3111 | } | |
3112 | ||
3113 | ||
733f4fbb SB |
3114 | /* btrfs_dev_stats_item */ |
3115 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
3116 | struct btrfs_dev_stats_item *ptr, | |
3117 | int index) | |
3118 | { | |
3119 | u64 val; | |
3120 | ||
3121 | read_extent_buffer(eb, &val, | |
3122 | offsetof(struct btrfs_dev_stats_item, values) + | |
3123 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
3124 | sizeof(val)); | |
3125 | return val; | |
3126 | } | |
3127 | ||
3128 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
3129 | struct btrfs_dev_stats_item *ptr, | |
3130 | int index, u64 val) | |
3131 | { | |
3132 | write_extent_buffer(eb, &val, | |
3133 | offsetof(struct btrfs_dev_stats_item, values) + | |
3134 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
3135 | sizeof(val)); | |
3136 | } | |
3137 | ||
630dc772 AJ |
3138 | /* btrfs_qgroup_status_item */ |
3139 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
3140 | generation, 64); | |
3141 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
3142 | version, 64); | |
3143 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
3144 | flags, 64); | |
2f232036 JS |
3145 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
3146 | rescan, 64); | |
630dc772 AJ |
3147 | |
3148 | /* btrfs_qgroup_info_item */ | |
3149 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
3150 | generation, 64); | |
3151 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
3152 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
3153 | rfer_cmpr, 64); | |
3154 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
3155 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
3156 | excl_cmpr, 64); | |
3157 | ||
3158 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
3159 | struct btrfs_qgroup_info_item, generation, 64); | |
3160 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
3161 | rfer, 64); | |
3162 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
3163 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
3164 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
3165 | excl, 64); | |
3166 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
3167 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
3168 | ||
3169 | /* btrfs_qgroup_limit_item */ | |
3170 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
3171 | flags, 64); | |
3172 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
3173 | max_rfer, 64); | |
3174 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
3175 | max_excl, 64); | |
3176 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
3177 | rsv_rfer, 64); | |
3178 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
3179 | rsv_excl, 64); | |
3180 | ||
a2bff640 SB |
3181 | /* btrfs_dev_replace_item */ |
3182 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
3183 | struct btrfs_dev_replace_item, src_devid, 64); | |
3184 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
3185 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
3186 | 64); | |
3187 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
3188 | replace_state, 64); | |
3189 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
3190 | time_started, 64); | |
3191 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
3192 | time_stopped, 64); | |
3193 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
3194 | num_write_errors, 64); | |
3195 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
3196 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
3197 | 64); | |
3198 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
3199 | cursor_left, 64); | |
3200 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
3201 | cursor_right, 64); | |
3202 | ||
3203 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
3204 | struct btrfs_dev_replace_item, src_devid, 64); | |
3205 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
3206 | struct btrfs_dev_replace_item, | |
3207 | cont_reading_from_srcdev_mode, 64); | |
3208 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
3209 | struct btrfs_dev_replace_item, replace_state, 64); | |
3210 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
3211 | struct btrfs_dev_replace_item, time_started, 64); | |
3212 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
3213 | struct btrfs_dev_replace_item, time_stopped, 64); | |
3214 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
3215 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
3216 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
3217 | struct btrfs_dev_replace_item, | |
3218 | num_uncorrectable_read_errors, 64); | |
3219 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
3220 | struct btrfs_dev_replace_item, cursor_left, 64); | |
3221 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
3222 | struct btrfs_dev_replace_item, cursor_right, 64); | |
3223 | ||
815745cf | 3224 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
e20d96d6 CM |
3225 | { |
3226 | return sb->s_fs_info; | |
3227 | } | |
3228 | ||
4beb1b8b CM |
3229 | /* helper function to cast into the data area of the leaf. */ |
3230 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 3231 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
3232 | btrfs_item_offset_nr(leaf, slot))) |
3233 | ||
3234 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
3235 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
3236 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 3237 | |
67377734 JB |
3238 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
3239 | { | |
3240 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
3241 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
3242 | } | |
3243 | ||
3b16a4e3 JB |
3244 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
3245 | { | |
3246 | return mapping_gfp_mask(mapping) & ~__GFP_FS; | |
3247 | } | |
3248 | ||
b18c6685 | 3249 | /* extent-tree.c */ |
16cdcec7 | 3250 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 3251 | unsigned num_items) |
16cdcec7 | 3252 | { |
707e8a07 | 3253 | return (root->nodesize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * |
c4fbb430 | 3254 | 2 * num_items; |
07127184 JB |
3255 | } |
3256 | ||
3257 | /* | |
3258 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
3259 | * COW. | |
3260 | */ | |
3261 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, | |
3262 | unsigned num_items) | |
3263 | { | |
707e8a07 | 3264 | return root->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
3265 | } |
3266 | ||
1be41b78 JB |
3267 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
3268 | struct btrfs_root *root); | |
0a2b2a84 JB |
3269 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
3270 | struct btrfs_root *root); | |
fa9c0d79 | 3271 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
3272 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
3273 | struct btrfs_root *root, unsigned long count); | |
a79b7d4b CM |
3274 | int btrfs_async_run_delayed_refs(struct btrfs_root *root, |
3275 | unsigned long count, int wait); | |
31840ae1 | 3276 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
3277 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
3278 | struct btrfs_root *root, u64 bytenr, | |
3173a18f | 3279 | u64 offset, int metadata, u64 *refs, u64 *flags); |
11833d66 YZ |
3280 | int btrfs_pin_extent(struct btrfs_root *root, |
3281 | u64 bytenr, u64 num, int reserved); | |
dcfac415 | 3282 | int btrfs_pin_extent_for_log_replay(struct btrfs_root *root, |
e688b725 | 3283 | u64 bytenr, u64 num_bytes); |
8c2a1a30 JB |
3284 | int btrfs_exclude_logged_extents(struct btrfs_root *root, |
3285 | struct extent_buffer *eb); | |
80ff3856 | 3286 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
3287 | struct btrfs_root *root, |
3288 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
3289 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
3290 | struct btrfs_fs_info *info, | |
3291 | u64 bytenr); | |
5d4f98a2 | 3292 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
6ab0a202 | 3293 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
5f39d397 | 3294 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
3295 | struct btrfs_root *root, u32 blocksize, |
3296 | u64 parent, u64 root_objectid, | |
3297 | struct btrfs_disk_key *key, int level, | |
5581a51a | 3298 | u64 hint, u64 empty_size); |
f0486c68 YZ |
3299 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
3300 | struct btrfs_root *root, | |
3301 | struct extent_buffer *buf, | |
5581a51a | 3302 | u64 parent, int last_ref); |
5d4f98a2 YZ |
3303 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
3304 | struct btrfs_root *root, | |
3305 | u64 root_objectid, u64 owner, | |
3306 | u64 offset, struct btrfs_key *ins); | |
3307 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, | |
3308 | struct btrfs_root *root, | |
3309 | u64 root_objectid, u64 owner, u64 offset, | |
3310 | struct btrfs_key *ins); | |
00361589 JB |
3311 | int btrfs_reserve_extent(struct btrfs_root *root, u64 num_bytes, |
3312 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, | |
e570fd27 | 3313 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 3314 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 3315 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 3316 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 3317 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 YZ |
3318 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
3319 | struct btrfs_root *root, | |
3320 | u64 bytenr, u64 num_bytes, u64 flags, | |
b1c79e09 | 3321 | int level, int is_data); |
31840ae1 ZY |
3322 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
3323 | struct btrfs_root *root, | |
66d7e7f0 | 3324 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
fcebe456 | 3325 | u64 owner, u64 offset, int no_quota); |
5d4f98a2 | 3326 | |
e570fd27 MX |
3327 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len, |
3328 | int delalloc); | |
e688b725 CM |
3329 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
3330 | u64 start, u64 len); | |
143bede5 JM |
3331 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
3332 | struct btrfs_root *root); | |
ccd467d6 | 3333 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 3334 | struct btrfs_root *root); |
b18c6685 | 3335 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
3336 | struct btrfs_root *root, |
3337 | u64 bytenr, u64 num_bytes, u64 parent, | |
fcebe456 | 3338 | u64 root_objectid, u64 owner, u64 offset, int no_quota); |
5d4f98a2 | 3339 | |
9078a3e1 CM |
3340 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
3341 | struct btrfs_root *root); | |
d2fb3437 | 3342 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
3343 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
3344 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 3345 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
3346 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
3347 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 3348 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 3349 | u64 size); |
1a40e23b ZY |
3350 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
3351 | struct btrfs_root *root, u64 group_start); | |
47ab2a6c | 3352 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
ea658bad JB |
3353 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
3354 | struct btrfs_root *root); | |
6d07bcec | 3355 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
4184ea7f | 3356 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
3357 | |
3358 | enum btrfs_reserve_flush_enum { | |
3359 | /* If we are in the transaction, we can't flush anything.*/ | |
3360 | BTRFS_RESERVE_NO_FLUSH, | |
3361 | /* | |
3362 | * Flushing delalloc may cause deadlock somewhere, in this | |
3363 | * case, use FLUSH LIMIT | |
3364 | */ | |
3365 | BTRFS_RESERVE_FLUSH_LIMIT, | |
3366 | BTRFS_RESERVE_FLUSH_ALL, | |
3367 | }; | |
3368 | ||
0ca1f7ce YZ |
3369 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
3370 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); | |
a22285a6 YZ |
3371 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
3372 | struct btrfs_root *root); | |
d68fc57b YZ |
3373 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
3374 | struct inode *inode); | |
3375 | void btrfs_orphan_release_metadata(struct inode *inode); | |
d5c12070 MX |
3376 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
3377 | struct btrfs_block_rsv *rsv, | |
3378 | int nitems, | |
ee3441b4 | 3379 | u64 *qgroup_reserved, bool use_global_rsv); |
d5c12070 MX |
3380 | void btrfs_subvolume_release_metadata(struct btrfs_root *root, |
3381 | struct btrfs_block_rsv *rsv, | |
3382 | u64 qgroup_reserved); | |
0ca1f7ce YZ |
3383 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
3384 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
3385 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); | |
3386 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); | |
66d8f3dd MX |
3387 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
3388 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, | |
3389 | unsigned short type); | |
f0486c68 YZ |
3390 | void btrfs_free_block_rsv(struct btrfs_root *root, |
3391 | struct btrfs_block_rsv *rsv); | |
4a92b1b8 | 3392 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
3393 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
3394 | enum btrfs_reserve_flush_enum flush); | |
4a92b1b8 | 3395 | int btrfs_block_rsv_check(struct btrfs_root *root, |
36ba022a JB |
3396 | struct btrfs_block_rsv *block_rsv, int min_factor); |
3397 | int btrfs_block_rsv_refill(struct btrfs_root *root, | |
08e007d2 MX |
3398 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
3399 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 YZ |
3400 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
3401 | struct btrfs_block_rsv *dst_rsv, | |
3402 | u64 num_bytes); | |
d52be818 JB |
3403 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
3404 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
3405 | int min_factor); | |
f0486c68 YZ |
3406 | void btrfs_block_rsv_release(struct btrfs_root *root, |
3407 | struct btrfs_block_rsv *block_rsv, | |
3408 | u64 num_bytes); | |
3409 | int btrfs_set_block_group_ro(struct btrfs_root *root, | |
3410 | struct btrfs_block_group_cache *cache); | |
143bede5 JM |
3411 | void btrfs_set_block_group_rw(struct btrfs_root *root, |
3412 | struct btrfs_block_group_cache *cache); | |
0af3d00b | 3413 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 3414 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 3415 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
3416 | u64 start, u64 end); | |
3417 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, | |
5378e607 | 3418 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca CM |
3419 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
3420 | struct btrfs_root *root, u64 type); | |
f7039b1d | 3421 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 3422 | |
c59021f8 | 3423 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
3424 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
3425 | struct btrfs_fs_info *fs_info); | |
31e50229 | 3426 | int __get_raid_index(u64 flags); |
8257b2dc MX |
3427 | int btrfs_start_nocow_write(struct btrfs_root *root); |
3428 | void btrfs_end_nocow_write(struct btrfs_root *root); | |
dee26a9f | 3429 | /* ctree.c */ |
5d4f98a2 YZ |
3430 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
3431 | int level, int *slot); | |
3432 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
3433 | int btrfs_previous_item(struct btrfs_root *root, |
3434 | struct btrfs_path *path, u64 min_objectid, | |
3435 | int type); | |
ade2e0b3 WS |
3436 | int btrfs_previous_extent_item(struct btrfs_root *root, |
3437 | struct btrfs_path *path, u64 min_objectid); | |
afe5fea7 | 3438 | void btrfs_set_item_key_safe(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 3439 | struct btrfs_key *new_key); |
925baedd CM |
3440 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
3441 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 3442 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 3443 | struct btrfs_key *key, int lowest_level, |
de78b51a | 3444 | u64 min_trans); |
3f157a2f | 3445 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 3446 | struct btrfs_path *path, |
3f157a2f | 3447 | u64 min_trans); |
7069830a AB |
3448 | enum btrfs_compare_tree_result { |
3449 | BTRFS_COMPARE_TREE_NEW, | |
3450 | BTRFS_COMPARE_TREE_DELETED, | |
3451 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 3452 | BTRFS_COMPARE_TREE_SAME, |
7069830a AB |
3453 | }; |
3454 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, | |
3455 | struct btrfs_root *right_root, | |
3456 | struct btrfs_path *left_path, | |
3457 | struct btrfs_path *right_path, | |
3458 | struct btrfs_key *key, | |
3459 | enum btrfs_compare_tree_result result, | |
3460 | void *ctx); | |
3461 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
3462 | struct btrfs_root *right_root, | |
3463 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
3464 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
3465 | struct btrfs_root *root, struct extent_buffer *buf, | |
3466 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 3467 | struct extent_buffer **cow_ret); |
be20aa9d CM |
3468 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
3469 | struct btrfs_root *root, | |
3470 | struct extent_buffer *buf, | |
3471 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
3472 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
3473 | struct extent_buffer *buf); | |
4b90c680 | 3474 | void btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 3475 | u32 data_size); |
afe5fea7 | 3476 | void btrfs_truncate_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 3477 | u32 new_size, int from_end); |
459931ec CM |
3478 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
3479 | struct btrfs_root *root, | |
3480 | struct btrfs_path *path, | |
3481 | struct btrfs_key *new_key, | |
3482 | unsigned long split_offset); | |
ad48fd75 YZ |
3483 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
3484 | struct btrfs_root *root, | |
3485 | struct btrfs_path *path, | |
3486 | struct btrfs_key *new_key); | |
e33d5c3d KN |
3487 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
3488 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
e089f05c CM |
3489 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
3490 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
3491 | ins_len, int cow); | |
5d9e75c4 JS |
3492 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
3493 | struct btrfs_path *p, u64 time_seq); | |
2f38b3e1 AJ |
3494 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
3495 | struct btrfs_key *key, struct btrfs_path *p, | |
3496 | int find_higher, int return_any); | |
6702ed49 | 3497 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 3498 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 3499 | int start_slot, u64 *last_ret, |
a6b6e75e | 3500 | struct btrfs_key *progress); |
b3b4aa74 | 3501 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
3502 | struct btrfs_path *btrfs_alloc_path(void); |
3503 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 3504 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 3505 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 3506 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
3507 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
3508 | ||
85e21bac CM |
3509 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3510 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
3511 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
3512 | struct btrfs_root *root, | |
3513 | struct btrfs_path *path) | |
3514 | { | |
3515 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
3516 | } | |
3517 | ||
afe5fea7 | 3518 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 JM |
3519 | struct btrfs_key *cpu_key, u32 *data_size, |
3520 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
3521 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
3522 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
3523 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
3524 | struct btrfs_root *root, | |
3525 | struct btrfs_path *path, | |
3526 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
3527 | ||
3528 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
3529 | struct btrfs_root *root, | |
3530 | struct btrfs_path *path, | |
3531 | struct btrfs_key *key, | |
3532 | u32 data_size) | |
3533 | { | |
3534 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
3535 | } | |
3536 | ||
234b63a0 | 3537 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 3538 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
3539 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
3540 | u64 time_seq); | |
1c8f52a5 AB |
3541 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
3542 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
3543 | { |
3544 | ++p->slots[0]; | |
3545 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 3546 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
3547 | return 0; |
3548 | } | |
1c8f52a5 AB |
3549 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
3550 | { | |
3551 | return btrfs_next_old_item(root, p, 0); | |
3552 | } | |
5f39d397 | 3553 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
2c536799 JM |
3554 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
3555 | struct btrfs_block_rsv *block_rsv, | |
3556 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
3557 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
3558 | struct btrfs_root *root, | |
3559 | struct extent_buffer *node, | |
3560 | struct extent_buffer *parent); | |
7841cb28 DS |
3561 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
3562 | { | |
3563 | /* | |
3564 | * Get synced with close_ctree() | |
3565 | */ | |
3566 | smp_mb(); | |
3567 | return fs_info->closing; | |
3568 | } | |
babbf170 MX |
3569 | |
3570 | /* | |
3571 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
3572 | * anything except sleeping. This function is used to check the status of | |
3573 | * the fs. | |
3574 | */ | |
3575 | static inline int btrfs_need_cleaner_sleep(struct btrfs_root *root) | |
3576 | { | |
3577 | return (root->fs_info->sb->s_flags & MS_RDONLY || | |
3578 | btrfs_fs_closing(root->fs_info)); | |
3579 | } | |
3580 | ||
6c41761f DS |
3581 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
3582 | { | |
837d5b6e | 3583 | kfree(fs_info->balance_ctl); |
6c41761f DS |
3584 | kfree(fs_info->delayed_root); |
3585 | kfree(fs_info->extent_root); | |
3586 | kfree(fs_info->tree_root); | |
3587 | kfree(fs_info->chunk_root); | |
3588 | kfree(fs_info->dev_root); | |
3589 | kfree(fs_info->csum_root); | |
bcef60f2 | 3590 | kfree(fs_info->quota_root); |
d8f98039 | 3591 | kfree(fs_info->uuid_root); |
6c41761f DS |
3592 | kfree(fs_info->super_copy); |
3593 | kfree(fs_info->super_for_commit); | |
3594 | kfree(fs_info); | |
3595 | } | |
7841cb28 | 3596 | |
097b8a7c JS |
3597 | /* tree mod log functions from ctree.c */ |
3598 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3599 | struct seq_list *elem); | |
3600 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3601 | struct seq_list *elem); | |
5b6602e7 | 3602 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 3603 | |
dee26a9f | 3604 | /* root-item.c */ |
ea9e8b11 | 3605 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
3606 | struct btrfs_path *path, |
3607 | u64 root_id, u64 ref_id); | |
0660b5af CM |
3608 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
3609 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
3610 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
3611 | const char *name, int name_len); | |
3612 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
3613 | struct btrfs_root *tree_root, | |
3614 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 3615 | const char *name, int name_len); |
e089f05c CM |
3616 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3617 | struct btrfs_key *key); | |
3618 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
3619 | *root, struct btrfs_key *key, struct btrfs_root_item | |
3620 | *item); | |
b45a9d8b JM |
3621 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
3622 | struct btrfs_root *root, | |
3623 | struct btrfs_key *key, | |
3624 | struct btrfs_root_item *item); | |
cb517eab MX |
3625 | int btrfs_find_root(struct btrfs_root *root, struct btrfs_key *search_key, |
3626 | struct btrfs_path *path, struct btrfs_root_item *root_item, | |
3627 | struct btrfs_key *root_key); | |
76dda93c | 3628 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
3629 | void btrfs_set_root_node(struct btrfs_root_item *item, |
3630 | struct extent_buffer *node); | |
08fe4db1 | 3631 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
3632 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
3633 | struct btrfs_root *root); | |
08fe4db1 | 3634 | |
07b30a49 SB |
3635 | /* uuid-tree.c */ |
3636 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, | |
3637 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
3638 | u64 subid); | |
3639 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, | |
3640 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
3641 | u64 subid); | |
70f80175 SB |
3642 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
3643 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
3644 | u64)); | |
07b30a49 | 3645 | |
dee26a9f | 3646 | /* dir-item.c */ |
9c52057c CM |
3647 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
3648 | const char *name, int name_len); | |
d397712b CM |
3649 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
3650 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 3651 | int name_len, struct inode *dir, |
aec7477b | 3652 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3653 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3654 | struct btrfs_root *root, | |
3655 | struct btrfs_path *path, u64 dir, | |
3656 | const char *name, int name_len, | |
3657 | int mod); | |
3658 | struct btrfs_dir_item * | |
3659 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3660 | struct btrfs_root *root, | |
3661 | struct btrfs_path *path, u64 dir, | |
3662 | u64 objectid, const char *name, int name_len, | |
3663 | int mod); | |
4df27c4d YZ |
3664 | struct btrfs_dir_item * |
3665 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3666 | struct btrfs_path *path, u64 dirid, | |
3667 | const char *name, int name_len); | |
7e38180e CM |
3668 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3669 | struct btrfs_root *root, | |
3670 | struct btrfs_path *path, | |
3671 | struct btrfs_dir_item *di); | |
5103e947 | 3672 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3673 | struct btrfs_root *root, |
3674 | struct btrfs_path *path, u64 objectid, | |
3675 | const char *name, u16 name_len, | |
3676 | const void *data, u16 data_len); | |
5103e947 JB |
3677 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3678 | struct btrfs_root *root, | |
3679 | struct btrfs_path *path, u64 dir, | |
3680 | const char *name, u16 name_len, | |
3681 | int mod); | |
22a94d44 JB |
3682 | int verify_dir_item(struct btrfs_root *root, |
3683 | struct extent_buffer *leaf, | |
3684 | struct btrfs_dir_item *dir_item); | |
7b128766 JB |
3685 | |
3686 | /* orphan.c */ | |
3687 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3688 | struct btrfs_root *root, u64 offset); | |
3689 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3690 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3691 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3692 | |
dee26a9f | 3693 | /* inode-item.c */ |
3954401f CM |
3694 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3695 | struct btrfs_root *root, | |
3696 | const char *name, int name_len, | |
aec7477b | 3697 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3698 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3699 | struct btrfs_root *root, | |
3700 | const char *name, int name_len, | |
aec7477b | 3701 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
3702 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3703 | struct btrfs_root *root, | |
3704 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3705 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3706 | *root, struct btrfs_path *path, |
3707 | struct btrfs_key *location, int mod); | |
dee26a9f | 3708 | |
f186373f MF |
3709 | struct btrfs_inode_extref * |
3710 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3711 | struct btrfs_root *root, | |
3712 | struct btrfs_path *path, | |
3713 | const char *name, int name_len, | |
3714 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3715 | int cow); | |
3716 | ||
3717 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, | |
3718 | u64 ref_objectid, const char *name, | |
3719 | int name_len, | |
3720 | struct btrfs_inode_extref **extref_ret); | |
3721 | ||
dee26a9f | 3722 | /* file-item.c */ |
facc8a22 | 3723 | struct btrfs_dio_private; |
459931ec CM |
3724 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
3725 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 3726 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3727 | struct bio *bio, u32 *dst); |
4b46fce2 | 3728 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
23ea8e5a | 3729 | struct bio *bio, u64 logical_offset); |
b18c6685 | 3730 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3731 | struct btrfs_root *root, |
3732 | u64 objectid, u64 pos, | |
3733 | u64 disk_offset, u64 disk_num_bytes, | |
3734 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3735 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3736 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3737 | struct btrfs_root *root, | |
3738 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3739 | u64 bytenr, int mod); |
065631f6 | 3740 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3741 | struct btrfs_root *root, |
e6dcd2dc | 3742 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 3743 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3744 | struct bio *bio, u64 file_start, int contig); |
a2de733c AJ |
3745 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3746 | struct list_head *list, int search_commit); | |
7ffbb598 FM |
3747 | void btrfs_extent_item_to_extent_map(struct inode *inode, |
3748 | const struct btrfs_path *path, | |
3749 | struct btrfs_file_extent_item *fi, | |
3750 | const bool new_inline, | |
3751 | struct extent_map *em); | |
3752 | ||
39279cc3 | 3753 | /* inode.c */ |
8ccf6f19 MX |
3754 | struct btrfs_delalloc_work { |
3755 | struct inode *inode; | |
3756 | int wait; | |
3757 | int delay_iput; | |
3758 | struct completion completion; | |
3759 | struct list_head list; | |
3760 | struct btrfs_work work; | |
3761 | }; | |
3762 | ||
3763 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, | |
3764 | int wait, int delay_iput); | |
3765 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); | |
3766 | ||
b2675157 JB |
3767 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
3768 | size_t pg_offset, u64 start, u64 len, | |
3769 | int create); | |
00361589 | 3770 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3771 | u64 *orig_start, u64 *orig_block_len, |
3772 | u64 *ram_bytes); | |
4881ee5a CM |
3773 | |
3774 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3775 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3776 | #define ClearPageChecked ClearPageFsMisc |
3777 | #define SetPageChecked SetPageFsMisc | |
3778 | #define PageChecked PageFsMisc | |
3779 | #endif | |
3780 | ||
b6973aa6 LZ |
3781 | /* This forces readahead on a given range of bytes in an inode */ |
3782 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3783 | struct file_ra_state *ra, struct file *file, | |
3784 | pgoff_t offset, unsigned long req_size) | |
3785 | { | |
3786 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3787 | } | |
3788 | ||
3de4586c CM |
3789 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
3790 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
3791 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3792 | struct btrfs_root *root, | |
3793 | struct inode *dir, struct inode *inode, | |
3794 | const char *name, int name_len); | |
3795 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
3796 | struct inode *parent_inode, struct inode *inode, | |
3797 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
3798 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3799 | struct btrfs_root *root, | |
3800 | struct inode *dir, u64 objectid, | |
3801 | const char *name, int name_len); | |
2aaa6655 JB |
3802 | int btrfs_truncate_page(struct inode *inode, loff_t from, loff_t len, |
3803 | int front); | |
e02119d5 CM |
3804 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3805 | struct btrfs_root *root, | |
3806 | struct inode *inode, u64 new_size, | |
3807 | u32 min_type); | |
3808 | ||
24bbcf04 | 3809 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
6c255e67 MX |
3810 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
3811 | int nr); | |
2ac55d41 JB |
3812 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
3813 | struct extent_state **cached_state); | |
d2fb3437 | 3814 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3815 | struct btrfs_root *new_root, |
3816 | struct btrfs_root *parent_root, | |
3817 | u64 new_dirid); | |
64a16701 DW |
3818 | int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, |
3819 | size_t size, struct bio *bio, | |
3820 | unsigned long bio_flags); | |
c2ec175c | 3821 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 3822 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3823 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3824 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3825 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3826 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3827 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3828 | int btrfs_init_cachep(void); |
3829 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3830 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3831 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3832 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 3833 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 3834 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
3835 | int create); |
3836 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
3837 | struct btrfs_root *root, | |
3838 | struct inode *inode); | |
be6aef60 JB |
3839 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3840 | struct btrfs_root *root, struct inode *inode); | |
5b21f2ed | 3841 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
66b4ffd1 | 3842 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3843 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3844 | struct btrfs_root *root); | |
a41ad394 | 3845 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3846 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
3847 | void btrfs_add_delayed_iput(struct inode *inode); |
3848 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
3849 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3850 | u64 start, u64 num_bytes, u64 min_size, | |
3851 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3852 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3853 | struct btrfs_trans_handle *trans, int mode, | |
3854 | u64 start, u64 num_bytes, u64 min_size, | |
3855 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 3856 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
3857 | |
3858 | /* ioctl.c */ | |
3859 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
6cbff00f CH |
3860 | void btrfs_update_iflags(struct inode *inode); |
3861 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
dd5f9615 | 3862 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3863 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3864 | struct btrfs_ioctl_defrag_range_args *range, | |
3865 | u64 newer_than, unsigned long max_pages); | |
5af3e8cc SB |
3866 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3867 | struct btrfs_ioctl_space_info *space); | |
35a3621b SB |
3868 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
3869 | struct btrfs_ioctl_balance_args *bargs); | |
3870 | ||
5af3e8cc | 3871 | |
39279cc3 | 3872 | /* file.c */ |
9247f317 MX |
3873 | int btrfs_auto_defrag_init(void); |
3874 | void btrfs_auto_defrag_exit(void); | |
4cb5300b CM |
3875 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
3876 | struct inode *inode); | |
3877 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
26176e7c | 3878 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3879 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
7014cdb4 JB |
3880 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
3881 | int skip_pinned); | |
828c0950 | 3882 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3883 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3884 | struct btrfs_root *root, struct inode *inode, | |
3885 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3886 | u64 *drop_end, int drop_cache, |
3887 | int replace_extent, | |
3888 | u32 extent_item_size, | |
3889 | int *key_inserted); | |
5dc562c5 JB |
3890 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3891 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3892 | u64 end, int drop_cache); |
d899e052 | 3893 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 3894 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 3895 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
3896 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, |
3897 | struct page **pages, size_t num_pages, | |
3898 | loff_t pos, size_t write_bytes, | |
3899 | struct extent_state **cached); | |
6bf13c0c | 3900 | |
6702ed49 CM |
3901 | /* tree-defrag.c */ |
3902 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3903 | struct btrfs_root *root); |
58176a96 JB |
3904 | |
3905 | /* sysfs.c */ | |
3906 | int btrfs_init_sysfs(void); | |
3907 | void btrfs_exit_sysfs(void); | |
5ac1d209 JM |
3908 | int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info); |
3909 | void btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info); | |
58176a96 | 3910 | |
5103e947 JB |
3911 | /* xattr.c */ |
3912 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3913 | |
edbd8d4e | 3914 | /* super.c */ |
edf24abe | 3915 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 3916 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 JP |
3917 | |
3918 | #ifdef CONFIG_PRINTK | |
3919 | __printf(2, 3) | |
c2cf52eb | 3920 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 JP |
3921 | #else |
3922 | static inline __printf(2, 3) | |
c2cf52eb | 3923 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
533574c6 JP |
3924 | { |
3925 | } | |
3926 | #endif | |
3927 | ||
c2cf52eb SK |
3928 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3929 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3930 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3931 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3932 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3933 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3934 | #define btrfs_err(fs_info, fmt, args...) \ | |
3935 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3936 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3937 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3938 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3939 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3940 | #define btrfs_info(fs_info, fmt, args...) \ | |
3941 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 FH |
3942 | |
3943 | #ifdef DEBUG | |
c2cf52eb SK |
3944 | #define btrfs_debug(fs_info, fmt, args...) \ |
3945 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3946 | #else |
3947 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3948 | no_printk(KERN_DEBUG fmt, ##args) | |
3949 | #endif | |
c2cf52eb | 3950 | |
2e17c7c6 JB |
3951 | #ifdef CONFIG_BTRFS_ASSERT |
3952 | ||
3953 | static inline void assfail(char *expr, char *file, int line) | |
3954 | { | |
efe120a0 | 3955 | pr_err("BTRFS: assertion failed: %s, file: %s, line: %d", |
2e17c7c6 JB |
3956 | expr, file, line); |
3957 | BUG(); | |
3958 | } | |
3959 | ||
3960 | #define ASSERT(expr) \ | |
3961 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3962 | #else | |
3963 | #define ASSERT(expr) ((void)0) | |
3964 | #endif | |
3965 | ||
3966 | #define btrfs_assert() | |
533574c6 | 3967 | __printf(5, 6) |
acce952b | 3968 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3969 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3970 | |
533574c6 | 3971 | |
49b25e05 JM |
3972 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
3973 | struct btrfs_root *root, const char *function, | |
3974 | unsigned int line, int errno); | |
3975 | ||
2b0ce2c2 MH |
3976 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3977 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3978 | ||
3979 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3980 | u64 flag) | |
3981 | { | |
3982 | struct btrfs_super_block *disk_super; | |
3983 | u64 features; | |
3984 | ||
3985 | disk_super = fs_info->super_copy; | |
3986 | features = btrfs_super_incompat_flags(disk_super); | |
3987 | if (!(features & flag)) { | |
ceda0864 MX |
3988 | spin_lock(&fs_info->super_lock); |
3989 | features = btrfs_super_incompat_flags(disk_super); | |
3990 | if (!(features & flag)) { | |
3991 | features |= flag; | |
3992 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3993 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3994 | flag); |
3995 | } | |
3996 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3997 | } |
3998 | } | |
3999 | ||
3173a18f JB |
4000 | #define btrfs_fs_incompat(fs_info, opt) \ |
4001 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
4002 | ||
4003 | static inline int __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) | |
4004 | { | |
4005 | struct btrfs_super_block *disk_super; | |
4006 | disk_super = fs_info->super_copy; | |
4007 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
4008 | } | |
4009 | ||
005d6427 DS |
4010 | /* |
4011 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
4012 | * detected, that way the exact line number is reported. | |
4013 | */ | |
4014 | ||
49b25e05 JM |
4015 | #define btrfs_abort_transaction(trans, root, errno) \ |
4016 | do { \ | |
4017 | __btrfs_abort_transaction(trans, root, __func__, \ | |
4018 | __LINE__, errno); \ | |
4019 | } while (0) | |
acce952b | 4020 | |
4021 | #define btrfs_std_error(fs_info, errno) \ | |
4022 | do { \ | |
4023 | if ((errno)) \ | |
4da35113 JM |
4024 | __btrfs_std_error((fs_info), __func__, \ |
4025 | __LINE__, (errno), NULL); \ | |
4026 | } while (0) | |
4027 | ||
4028 | #define btrfs_error(fs_info, errno, fmt, args...) \ | |
4029 | do { \ | |
4030 | __btrfs_std_error((fs_info), __func__, __LINE__, \ | |
4031 | (errno), fmt, ##args); \ | |
acce952b | 4032 | } while (0) |
33268eaf | 4033 | |
533574c6 | 4034 | __printf(5, 6) |
8c342930 JM |
4035 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, |
4036 | unsigned int line, int errno, const char *fmt, ...); | |
4037 | ||
aa43a17c ES |
4038 | /* |
4039 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
4040 | * will panic(). Otherwise we BUG() here. | |
4041 | */ | |
8c342930 JM |
4042 | #define btrfs_panic(fs_info, errno, fmt, args...) \ |
4043 | do { \ | |
aa43a17c ES |
4044 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ |
4045 | BUG(); \ | |
acce952b | 4046 | } while (0) |
33268eaf JB |
4047 | |
4048 | /* acl.c */ | |
0eda294d | 4049 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 4050 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 4051 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
4052 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
4053 | struct inode *inode, struct inode *dir); | |
9b89d95a | 4054 | #else |
ed8f3737 | 4055 | #define btrfs_get_acl NULL |
996a710d | 4056 | #define btrfs_set_acl NULL |
9b89d95a LZ |
4057 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
4058 | struct inode *inode, struct inode *dir) | |
4059 | { | |
4060 | return 0; | |
4061 | } | |
9b89d95a | 4062 | #endif |
0f9dd46c | 4063 | |
5d4f98a2 YZ |
4064 | /* relocation.c */ |
4065 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
4066 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
4067 | struct btrfs_root *root); | |
4068 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
4069 | struct btrfs_root *root); | |
4070 | int btrfs_recover_relocation(struct btrfs_root *root); | |
4071 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
4072 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
4073 | struct btrfs_root *root, struct extent_buffer *buf, | |
4074 | struct extent_buffer *cow); | |
3fd0a558 YZ |
4075 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, |
4076 | struct btrfs_pending_snapshot *pending, | |
4077 | u64 *bytes_to_reserve); | |
49b25e05 | 4078 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 4079 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
4080 | |
4081 | /* scrub.c */ | |
aa1b8cd4 SB |
4082 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
4083 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 4084 | int readonly, int is_dev_replace); |
143bede5 | 4085 | void btrfs_scrub_pause(struct btrfs_root *root); |
143bede5 | 4086 | void btrfs_scrub_continue(struct btrfs_root *root); |
aa1b8cd4 SB |
4087 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
4088 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
4089 | struct btrfs_device *dev); | |
a2de733c AJ |
4090 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, |
4091 | struct btrfs_scrub_progress *progress); | |
c404e0dc MX |
4092 | |
4093 | /* dev-replace.c */ | |
4094 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
4095 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4096 | void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info); | |
a2de733c | 4097 | |
7414a03f AJ |
4098 | /* reada.c */ |
4099 | struct reada_control { | |
4100 | struct btrfs_root *root; /* tree to prefetch */ | |
4101 | struct btrfs_key key_start; | |
4102 | struct btrfs_key key_end; /* exclusive */ | |
4103 | atomic_t elems; | |
4104 | struct kref refcnt; | |
4105 | wait_queue_head_t wait; | |
4106 | }; | |
4107 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
4108 | struct btrfs_key *start, struct btrfs_key *end); | |
4109 | int btrfs_reada_wait(void *handle); | |
4110 | void btrfs_reada_detach(void *handle); | |
4111 | int btree_readahead_hook(struct btrfs_root *root, struct extent_buffer *eb, | |
4112 | u64 start, int err); | |
4113 | ||
95a06077 JS |
4114 | static inline int is_fstree(u64 rootid) |
4115 | { | |
4116 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
4117 | (s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID) | |
4118 | return 1; | |
4119 | return 0; | |
4120 | } | |
210549eb DS |
4121 | |
4122 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
4123 | { | |
4124 | return signal_pending(current); | |
4125 | } | |
4126 | ||
aaedb55b JB |
4127 | /* Sanity test specific functions */ |
4128 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
4129 | void btrfs_test_destroy_inode(struct inode *inode); | |
faa2dbf0 JB |
4130 | int btrfs_verify_qgroup_counts(struct btrfs_fs_info *fs_info, u64 qgroupid, |
4131 | u64 rfer, u64 excl); | |
aaedb55b | 4132 | #endif |
210549eb | 4133 | |
fccb84c9 DS |
4134 | static inline int btrfs_test_is_dummy_root(struct btrfs_root *root) |
4135 | { | |
4136 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
4137 | if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state))) | |
4138 | return 1; | |
4139 | #endif | |
4140 | return 0; | |
4141 | } | |
4142 | ||
eb60ceac | 4143 | #endif |