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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
810191ff CM |
22 | #include <linux/mm.h> |
23 | #include <linux/highmem.h> | |
e20d96d6 | 24 | #include <linux/fs.h> |
a2de733c | 25 | #include <linux/rwsem.h> |
58176a96 | 26 | #include <linux/completion.h> |
04160088 | 27 | #include <linux/backing-dev.h> |
e6dcd2dc | 28 | #include <linux/wait.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
f8b18087 | 30 | #include <linux/kobject.h> |
1abe9b8a | 31 | #include <trace/events/btrfs.h> |
479965d6 | 32 | #include <asm/kmap_types.h> |
3b16a4e3 | 33 | #include <linux/pagemap.h> |
d1310b2e | 34 | #include "extent_io.h" |
5f39d397 | 35 | #include "extent_map.h" |
8b712842 | 36 | #include "async-thread.h" |
a2de733c | 37 | #include "ioctl.h" |
e20d96d6 | 38 | |
e089f05c | 39 | struct btrfs_trans_handle; |
79154b1b | 40 | struct btrfs_transaction; |
a22285a6 | 41 | struct btrfs_pending_snapshot; |
35b7e476 CM |
42 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
43 | extern struct kmem_cache *btrfs_transaction_cachep; | |
44 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 45 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 46 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 47 | struct btrfs_ordered_sum; |
e089f05c | 48 | |
2a7108ad | 49 | #define BTRFS_MAGIC "_BHRfS_M" |
eb60ceac | 50 | |
4008c04a | 51 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 52 | |
5d4f98a2 YZ |
53 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
54 | ||
5a3f23d5 CM |
55 | /* |
56 | * files bigger than this get some pre-flushing when they are added | |
57 | * to the ordered operations list. That way we limit the total | |
58 | * work done by the commit | |
59 | */ | |
60 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) | |
61 | ||
0b86a832 | 62 | /* holds pointers to all of the tree roots */ |
6407bf6d | 63 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
64 | |
65 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 66 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 67 | |
0b86a832 CM |
68 | /* |
69 | * chunk tree stores translations from logical -> physical block numbering | |
70 | * the super block points to the chunk tree | |
71 | */ | |
e085def2 | 72 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
73 | |
74 | /* | |
75 | * stores information about which areas of a given device are in use. | |
76 | * one per device. The tree of tree roots points to the device tree | |
77 | */ | |
e085def2 CM |
78 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
79 | ||
80 | /* one per subvolume, storing files and directories */ | |
81 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
82 | ||
83 | /* directory objectid inside the root tree */ | |
84 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 85 | |
d20f7043 CM |
86 | /* holds checksums of all the data extents */ |
87 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
88 | ||
0940ebf6 ID |
89 | /* for storing balance parameters in the root tree */ |
90 | #define BTRFS_BALANCE_OBJECTID -4ULL | |
91 | ||
7b128766 JB |
92 | /* orhpan objectid for tracking unlinked/truncated files */ |
93 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
94 | ||
e02119d5 CM |
95 | /* does write ahead logging to speed up fsyncs */ |
96 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
97 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
98 | ||
e4657689 ZY |
99 | /* for space balancing */ |
100 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
101 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
102 | ||
d20f7043 CM |
103 | /* |
104 | * extent checksums all have this objectid | |
105 | * this allows them to share the logging tree | |
106 | * for fsyncs | |
107 | */ | |
108 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
109 | ||
0af3d00b JB |
110 | /* For storing free space cache */ |
111 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL | |
112 | ||
82d5902d LZ |
113 | /* |
114 | * The inode number assigned to the special inode for sotring | |
115 | * free ino cache | |
116 | */ | |
117 | #define BTRFS_FREE_INO_OBJECTID -12ULL | |
118 | ||
31840ae1 ZY |
119 | /* dummy objectid represents multiple objectids */ |
120 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
121 | ||
0b86a832 | 122 | /* |
6527cdbe | 123 | * All files have objectids in this range. |
0b86a832 | 124 | */ |
f6dbff55 | 125 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 126 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 127 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 128 | |
0b86a832 CM |
129 | |
130 | /* | |
131 | * the device items go into the chunk tree. The key is in the form | |
132 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
133 | */ | |
134 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
135 | ||
4df27c4d YZ |
136 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
137 | ||
138 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 | |
139 | ||
727011e0 CM |
140 | /* |
141 | * the max metadata block size. This limit is somewhat artificial, | |
142 | * but the memmove costs go through the roof for larger blocks. | |
143 | */ | |
144 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
145 | ||
e20d96d6 CM |
146 | /* |
147 | * we can actually store much bigger names, but lets not confuse the rest | |
148 | * of linux | |
149 | */ | |
150 | #define BTRFS_NAME_LEN 255 | |
151 | ||
f254e52c CM |
152 | /* 32 bytes in various csum fields */ |
153 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
154 | |
155 | /* csum types */ | |
156 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
157 | ||
158 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
159 | ||
509659cd | 160 | /* four bytes for CRC32 */ |
3954401f | 161 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 162 | |
fabb5681 CM |
163 | #define BTRFS_FT_UNKNOWN 0 |
164 | #define BTRFS_FT_REG_FILE 1 | |
165 | #define BTRFS_FT_DIR 2 | |
166 | #define BTRFS_FT_CHRDEV 3 | |
167 | #define BTRFS_FT_BLKDEV 4 | |
168 | #define BTRFS_FT_FIFO 5 | |
169 | #define BTRFS_FT_SOCK 6 | |
170 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
171 | #define BTRFS_FT_XATTR 8 |
172 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 173 | |
fec577fb | 174 | /* |
d4a78947 WF |
175 | * The key defines the order in the tree, and so it also defines (optimal) |
176 | * block layout. | |
177 | * | |
178 | * objectid corresponds to the inode number. | |
179 | * | |
180 | * type tells us things about the object, and is a kind of stream selector. | |
181 | * so for a given inode, keys with type of 1 might refer to the inode data, | |
182 | * type of 2 may point to file data in the btree and type == 3 may point to | |
183 | * extents. | |
fec577fb CM |
184 | * |
185 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
186 | * |
187 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
188 | * in cpu native order. Otherwise they are identical and their sizes | |
189 | * should be the same (ie both packed) | |
fec577fb | 190 | */ |
e2fa7227 CM |
191 | struct btrfs_disk_key { |
192 | __le64 objectid; | |
5f39d397 | 193 | u8 type; |
70b2befd | 194 | __le64 offset; |
e2fa7227 CM |
195 | } __attribute__ ((__packed__)); |
196 | ||
197 | struct btrfs_key { | |
eb60ceac | 198 | u64 objectid; |
5f39d397 | 199 | u8 type; |
70b2befd | 200 | u64 offset; |
eb60ceac CM |
201 | } __attribute__ ((__packed__)); |
202 | ||
0b86a832 CM |
203 | struct btrfs_mapping_tree { |
204 | struct extent_map_tree map_tree; | |
205 | }; | |
206 | ||
0b86a832 CM |
207 | struct btrfs_dev_item { |
208 | /* the internal btrfs device id */ | |
209 | __le64 devid; | |
210 | ||
211 | /* size of the device */ | |
212 | __le64 total_bytes; | |
213 | ||
214 | /* bytes used */ | |
215 | __le64 bytes_used; | |
216 | ||
217 | /* optimal io alignment for this device */ | |
218 | __le32 io_align; | |
219 | ||
220 | /* optimal io width for this device */ | |
221 | __le32 io_width; | |
222 | ||
223 | /* minimal io size for this device */ | |
224 | __le32 sector_size; | |
225 | ||
0b86a832 CM |
226 | /* type and info about this device */ |
227 | __le64 type; | |
228 | ||
2b82032c YZ |
229 | /* expected generation for this device */ |
230 | __le64 generation; | |
231 | ||
c3027eb5 CM |
232 | /* |
233 | * starting byte of this partition on the device, | |
d4a78947 | 234 | * to allow for stripe alignment in the future |
c3027eb5 CM |
235 | */ |
236 | __le64 start_offset; | |
237 | ||
e17cade2 CM |
238 | /* grouping information for allocation decisions */ |
239 | __le32 dev_group; | |
240 | ||
241 | /* seek speed 0-100 where 100 is fastest */ | |
242 | u8 seek_speed; | |
243 | ||
244 | /* bandwidth 0-100 where 100 is fastest */ | |
245 | u8 bandwidth; | |
246 | ||
0d81ba5d | 247 | /* btrfs generated uuid for this device */ |
e17cade2 | 248 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
249 | |
250 | /* uuid of FS who owns this device */ | |
251 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
252 | } __attribute__ ((__packed__)); |
253 | ||
254 | struct btrfs_stripe { | |
255 | __le64 devid; | |
256 | __le64 offset; | |
e17cade2 | 257 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
258 | } __attribute__ ((__packed__)); |
259 | ||
260 | struct btrfs_chunk { | |
e17cade2 CM |
261 | /* size of this chunk in bytes */ |
262 | __le64 length; | |
263 | ||
264 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 265 | __le64 owner; |
e17cade2 | 266 | |
0b86a832 CM |
267 | __le64 stripe_len; |
268 | __le64 type; | |
269 | ||
270 | /* optimal io alignment for this chunk */ | |
271 | __le32 io_align; | |
272 | ||
273 | /* optimal io width for this chunk */ | |
274 | __le32 io_width; | |
275 | ||
276 | /* minimal io size for this chunk */ | |
277 | __le32 sector_size; | |
278 | ||
279 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
280 | * item in the btree | |
281 | */ | |
282 | __le16 num_stripes; | |
321aecc6 CM |
283 | |
284 | /* sub stripes only matter for raid10 */ | |
285 | __le16 sub_stripes; | |
0b86a832 CM |
286 | struct btrfs_stripe stripe; |
287 | /* additional stripes go here */ | |
288 | } __attribute__ ((__packed__)); | |
289 | ||
0af3d00b JB |
290 | #define BTRFS_FREE_SPACE_EXTENT 1 |
291 | #define BTRFS_FREE_SPACE_BITMAP 2 | |
292 | ||
293 | struct btrfs_free_space_entry { | |
294 | __le64 offset; | |
295 | __le64 bytes; | |
296 | u8 type; | |
297 | } __attribute__ ((__packed__)); | |
298 | ||
299 | struct btrfs_free_space_header { | |
300 | struct btrfs_disk_key location; | |
301 | __le64 generation; | |
302 | __le64 num_entries; | |
303 | __le64 num_bitmaps; | |
304 | } __attribute__ ((__packed__)); | |
305 | ||
0b86a832 CM |
306 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
307 | { | |
308 | BUG_ON(num_stripes == 0); | |
309 | return sizeof(struct btrfs_chunk) + | |
310 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
311 | } | |
312 | ||
5d4f98a2 YZ |
313 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
314 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) | |
acce952b | 315 | |
316 | /* | |
317 | * File system states | |
318 | */ | |
319 | ||
320 | /* Errors detected */ | |
321 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) | |
322 | ||
5d4f98a2 YZ |
323 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
324 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) | |
325 | ||
326 | #define BTRFS_BACKREF_REV_MAX 256 | |
327 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
328 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
329 | BTRFS_BACKREF_REV_SHIFT) | |
330 | ||
331 | #define BTRFS_OLD_BACKREF_REV 0 | |
332 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 333 | |
fec577fb CM |
334 | /* |
335 | * every tree block (leaf or node) starts with this header. | |
336 | */ | |
bb492bb0 | 337 | struct btrfs_header { |
e17cade2 | 338 | /* these first four must match the super block */ |
f254e52c | 339 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 340 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 341 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 342 | __le64 flags; |
e17cade2 CM |
343 | |
344 | /* allowed to be different from the super from here on down */ | |
345 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 346 | __le64 generation; |
4d775673 | 347 | __le64 owner; |
5f39d397 | 348 | __le32 nritems; |
9a6f11ed | 349 | u8 level; |
eb60ceac CM |
350 | } __attribute__ ((__packed__)); |
351 | ||
5f39d397 | 352 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
353 | sizeof(struct btrfs_header)) / \ |
354 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 355 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 356 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
357 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
358 | sizeof(struct btrfs_item) - \ | |
359 | sizeof(struct btrfs_file_extent_item)) | |
f34f57a3 YZ |
360 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
361 | sizeof(struct btrfs_item) -\ | |
362 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 363 | |
0b86a832 CM |
364 | |
365 | /* | |
366 | * this is a very generous portion of the super block, giving us | |
367 | * room to translate 14 chunks with 3 stripes each. | |
368 | */ | |
369 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 370 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 371 | |
af31f5e5 CM |
372 | /* |
373 | * just in case we somehow lose the roots and are not able to mount, | |
374 | * we store an array of the roots from previous transactions | |
375 | * in the super. | |
376 | */ | |
377 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
378 | struct btrfs_root_backup { | |
379 | __le64 tree_root; | |
380 | __le64 tree_root_gen; | |
381 | ||
382 | __le64 chunk_root; | |
383 | __le64 chunk_root_gen; | |
384 | ||
385 | __le64 extent_root; | |
386 | __le64 extent_root_gen; | |
387 | ||
388 | __le64 fs_root; | |
389 | __le64 fs_root_gen; | |
390 | ||
391 | __le64 dev_root; | |
392 | __le64 dev_root_gen; | |
393 | ||
394 | __le64 csum_root; | |
395 | __le64 csum_root_gen; | |
396 | ||
397 | __le64 total_bytes; | |
398 | __le64 bytes_used; | |
399 | __le64 num_devices; | |
400 | /* future */ | |
401 | __le64 unsed_64[4]; | |
402 | ||
403 | u8 tree_root_level; | |
404 | u8 chunk_root_level; | |
405 | u8 extent_root_level; | |
406 | u8 fs_root_level; | |
407 | u8 dev_root_level; | |
408 | u8 csum_root_level; | |
409 | /* future and to align */ | |
410 | u8 unused_8[10]; | |
411 | } __attribute__ ((__packed__)); | |
412 | ||
fec577fb CM |
413 | /* |
414 | * the super block basically lists the main trees of the FS | |
415 | * it currently lacks any block count etc etc | |
416 | */ | |
234b63a0 | 417 | struct btrfs_super_block { |
f254e52c | 418 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 419 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 420 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 421 | __le64 bytenr; /* this block number */ |
63b10fc4 | 422 | __le64 flags; |
e17cade2 CM |
423 | |
424 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 425 | __le64 magic; |
3768f368 CM |
426 | __le64 generation; |
427 | __le64 root; | |
0b86a832 | 428 | __le64 chunk_root; |
e02119d5 | 429 | __le64 log_root; |
c3027eb5 CM |
430 | |
431 | /* this will help find the new super based on the log root */ | |
432 | __le64 log_root_transid; | |
db94535d CM |
433 | __le64 total_bytes; |
434 | __le64 bytes_used; | |
2e635a27 | 435 | __le64 root_dir_objectid; |
8a4b83cc | 436 | __le64 num_devices; |
5f39d397 CM |
437 | __le32 sectorsize; |
438 | __le32 nodesize; | |
439 | __le32 leafsize; | |
87ee04eb | 440 | __le32 stripesize; |
0b86a832 | 441 | __le32 sys_chunk_array_size; |
84234f3a | 442 | __le64 chunk_root_generation; |
f2b636e8 JB |
443 | __le64 compat_flags; |
444 | __le64 compat_ro_flags; | |
445 | __le64 incompat_flags; | |
607d432d | 446 | __le16 csum_type; |
db94535d | 447 | u8 root_level; |
0b86a832 | 448 | u8 chunk_root_level; |
e02119d5 | 449 | u8 log_root_level; |
0d81ba5d | 450 | struct btrfs_dev_item dev_item; |
c3027eb5 | 451 | |
7ae9c09d | 452 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 453 | |
0af3d00b JB |
454 | __le64 cache_generation; |
455 | ||
c3027eb5 | 456 | /* future expansion */ |
0af3d00b | 457 | __le64 reserved[31]; |
0b86a832 | 458 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 459 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
460 | } __attribute__ ((__packed__)); |
461 | ||
f2b636e8 JB |
462 | /* |
463 | * Compat flags that we support. If any incompat flags are set other than the | |
464 | * ones specified below then we will fail to mount | |
465 | */ | |
5d4f98a2 | 466 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
0af3d00b | 467 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
67377734 | 468 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
a6fa6fae | 469 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
727011e0 CM |
470 | /* |
471 | * some patches floated around with a second compression method | |
472 | * lets save that incompat here for when they do get in | |
473 | * Note we don't actually support it, we're just reserving the | |
474 | * number | |
475 | */ | |
476 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) | |
477 | ||
478 | /* | |
479 | * older kernels tried to do bigger metadata blocks, but the | |
480 | * code was pretty buggy. Lets not let them try anymore. | |
481 | */ | |
482 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) | |
5d4f98a2 YZ |
483 | |
484 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL | |
485 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL | |
0af3d00b JB |
486 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
487 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 488 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 489 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 490 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
a6fa6fae | 491 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO) |
f2b636e8 | 492 | |
fec577fb | 493 | /* |
62e2749e | 494 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
495 | * the item in the leaf (relative to the start of the data area) |
496 | */ | |
0783fcfc | 497 | struct btrfs_item { |
e2fa7227 | 498 | struct btrfs_disk_key key; |
123abc88 | 499 | __le32 offset; |
5f39d397 | 500 | __le32 size; |
eb60ceac CM |
501 | } __attribute__ ((__packed__)); |
502 | ||
fec577fb CM |
503 | /* |
504 | * leaves have an item area and a data area: | |
505 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
506 | * | |
507 | * The data is separate from the items to get the keys closer together | |
508 | * during searches. | |
509 | */ | |
234b63a0 | 510 | struct btrfs_leaf { |
bb492bb0 | 511 | struct btrfs_header header; |
123abc88 | 512 | struct btrfs_item items[]; |
eb60ceac CM |
513 | } __attribute__ ((__packed__)); |
514 | ||
fec577fb CM |
515 | /* |
516 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
517 | * other blocks | |
518 | */ | |
123abc88 CM |
519 | struct btrfs_key_ptr { |
520 | struct btrfs_disk_key key; | |
521 | __le64 blockptr; | |
74493f7a | 522 | __le64 generation; |
123abc88 CM |
523 | } __attribute__ ((__packed__)); |
524 | ||
234b63a0 | 525 | struct btrfs_node { |
bb492bb0 | 526 | struct btrfs_header header; |
123abc88 | 527 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
528 | } __attribute__ ((__packed__)); |
529 | ||
fec577fb | 530 | /* |
234b63a0 CM |
531 | * btrfs_paths remember the path taken from the root down to the leaf. |
532 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
533 | * to any other levels that are present. |
534 | * | |
535 | * The slots array records the index of the item or block pointer | |
536 | * used while walking the tree. | |
537 | */ | |
234b63a0 | 538 | struct btrfs_path { |
5f39d397 | 539 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 540 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
541 | /* if there is real range locking, this locks field will change */ |
542 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 543 | int reada; |
925baedd | 544 | /* keep some upper locks as we walk down */ |
6702ed49 | 545 | int lowest_level; |
459931ec CM |
546 | |
547 | /* | |
548 | * set by btrfs_split_item, tells search_slot to keep all locks | |
549 | * and to force calls to keep space in the nodes | |
550 | */ | |
b9473439 CM |
551 | unsigned int search_for_split:1; |
552 | unsigned int keep_locks:1; | |
553 | unsigned int skip_locking:1; | |
554 | unsigned int leave_spinning:1; | |
5d4f98a2 | 555 | unsigned int search_commit_root:1; |
eb60ceac | 556 | }; |
5de08d7d | 557 | |
62e2749e CM |
558 | /* |
559 | * items in the extent btree are used to record the objectid of the | |
560 | * owner of the block and the number of references | |
561 | */ | |
5d4f98a2 | 562 | |
62e2749e | 563 | struct btrfs_extent_item { |
5d4f98a2 YZ |
564 | __le64 refs; |
565 | __le64 generation; | |
566 | __le64 flags; | |
567 | } __attribute__ ((__packed__)); | |
568 | ||
569 | struct btrfs_extent_item_v0 { | |
62e2749e | 570 | __le32 refs; |
74493f7a CM |
571 | } __attribute__ ((__packed__)); |
572 | ||
5d4f98a2 YZ |
573 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
574 | sizeof(struct btrfs_item)) | |
575 | ||
576 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) | |
577 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) | |
578 | ||
579 | /* following flags only apply to tree blocks */ | |
580 | ||
581 | /* use full backrefs for extent pointers in the block */ | |
582 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) | |
583 | ||
a2de733c AJ |
584 | /* |
585 | * this flag is only used internally by scrub and may be changed at any time | |
586 | * it is only declared here to avoid collisions | |
587 | */ | |
588 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) | |
589 | ||
5d4f98a2 YZ |
590 | struct btrfs_tree_block_info { |
591 | struct btrfs_disk_key key; | |
592 | u8 level; | |
593 | } __attribute__ ((__packed__)); | |
594 | ||
595 | struct btrfs_extent_data_ref { | |
596 | __le64 root; | |
597 | __le64 objectid; | |
598 | __le64 offset; | |
599 | __le32 count; | |
600 | } __attribute__ ((__packed__)); | |
601 | ||
602 | struct btrfs_shared_data_ref { | |
603 | __le32 count; | |
604 | } __attribute__ ((__packed__)); | |
605 | ||
606 | struct btrfs_extent_inline_ref { | |
607 | u8 type; | |
1bec1aed | 608 | __le64 offset; |
5d4f98a2 YZ |
609 | } __attribute__ ((__packed__)); |
610 | ||
611 | /* old style backrefs item */ | |
612 | struct btrfs_extent_ref_v0 { | |
74493f7a CM |
613 | __le64 root; |
614 | __le64 generation; | |
615 | __le64 objectid; | |
5d4f98a2 | 616 | __le32 count; |
62e2749e CM |
617 | } __attribute__ ((__packed__)); |
618 | ||
5d4f98a2 | 619 | |
0b86a832 CM |
620 | /* dev extents record free space on individual devices. The owner |
621 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 622 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
623 | */ |
624 | struct btrfs_dev_extent { | |
e17cade2 CM |
625 | __le64 chunk_tree; |
626 | __le64 chunk_objectid; | |
627 | __le64 chunk_offset; | |
0b86a832 | 628 | __le64 length; |
e17cade2 | 629 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
630 | } __attribute__ ((__packed__)); |
631 | ||
3954401f | 632 | struct btrfs_inode_ref { |
aec7477b | 633 | __le64 index; |
3954401f CM |
634 | __le16 name_len; |
635 | /* name goes here */ | |
636 | } __attribute__ ((__packed__)); | |
637 | ||
0b86a832 | 638 | struct btrfs_timespec { |
f254e52c | 639 | __le64 sec; |
1e1d2701 CM |
640 | __le32 nsec; |
641 | } __attribute__ ((__packed__)); | |
642 | ||
95029d7d | 643 | enum btrfs_compression_type { |
261507a0 LZ |
644 | BTRFS_COMPRESS_NONE = 0, |
645 | BTRFS_COMPRESS_ZLIB = 1, | |
a6fa6fae LZ |
646 | BTRFS_COMPRESS_LZO = 2, |
647 | BTRFS_COMPRESS_TYPES = 2, | |
648 | BTRFS_COMPRESS_LAST = 3, | |
95029d7d | 649 | }; |
c8b97818 | 650 | |
1e1d2701 | 651 | struct btrfs_inode_item { |
e02119d5 | 652 | /* nfs style generation number */ |
1e1d2701 | 653 | __le64 generation; |
e02119d5 CM |
654 | /* transid that last touched this inode */ |
655 | __le64 transid; | |
1e1d2701 | 656 | __le64 size; |
a76a3cd4 | 657 | __le64 nbytes; |
31f3c99b | 658 | __le64 block_group; |
1e1d2701 CM |
659 | __le32 nlink; |
660 | __le32 uid; | |
661 | __le32 gid; | |
662 | __le32 mode; | |
0b86a832 | 663 | __le64 rdev; |
f2b636e8 | 664 | __le64 flags; |
c8b97818 | 665 | |
c3027eb5 CM |
666 | /* modification sequence number for NFS */ |
667 | __le64 sequence; | |
668 | ||
669 | /* | |
670 | * a little future expansion, for more than this we can | |
671 | * just grow the inode item and version it | |
672 | */ | |
673 | __le64 reserved[4]; | |
0b86a832 CM |
674 | struct btrfs_timespec atime; |
675 | struct btrfs_timespec ctime; | |
676 | struct btrfs_timespec mtime; | |
677 | struct btrfs_timespec otime; | |
1e1d2701 CM |
678 | } __attribute__ ((__packed__)); |
679 | ||
e02119d5 CM |
680 | struct btrfs_dir_log_item { |
681 | __le64 end; | |
682 | } __attribute__ ((__packed__)); | |
683 | ||
62e2749e | 684 | struct btrfs_dir_item { |
d6e4a428 | 685 | struct btrfs_disk_key location; |
e02119d5 | 686 | __le64 transid; |
5103e947 | 687 | __le16 data_len; |
a8a2ee0c | 688 | __le16 name_len; |
62e2749e CM |
689 | u8 type; |
690 | } __attribute__ ((__packed__)); | |
691 | ||
b83cc969 LZ |
692 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
693 | ||
62e2749e | 694 | struct btrfs_root_item { |
d6e4a428 | 695 | struct btrfs_inode_item inode; |
84234f3a | 696 | __le64 generation; |
d6e4a428 | 697 | __le64 root_dirid; |
db94535d CM |
698 | __le64 bytenr; |
699 | __le64 byte_limit; | |
700 | __le64 bytes_used; | |
80ff3856 | 701 | __le64 last_snapshot; |
f2b636e8 | 702 | __le64 flags; |
62e2749e | 703 | __le32 refs; |
5eda7b5e CM |
704 | struct btrfs_disk_key drop_progress; |
705 | u8 drop_level; | |
db94535d | 706 | u8 level; |
9f5fae2f | 707 | } __attribute__ ((__packed__)); |
62e2749e | 708 | |
0660b5af CM |
709 | /* |
710 | * this is used for both forward and backward root refs | |
711 | */ | |
712 | struct btrfs_root_ref { | |
713 | __le64 dirid; | |
714 | __le64 sequence; | |
715 | __le16 name_len; | |
716 | } __attribute__ ((__packed__)); | |
717 | ||
0940ebf6 ID |
718 | struct btrfs_disk_balance_args { |
719 | /* | |
720 | * profiles to operate on, single is denoted by | |
721 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
722 | */ | |
723 | __le64 profiles; | |
724 | ||
725 | /* usage filter */ | |
726 | __le64 usage; | |
727 | ||
728 | /* devid filter */ | |
729 | __le64 devid; | |
730 | ||
731 | /* devid subset filter [pstart..pend) */ | |
732 | __le64 pstart; | |
733 | __le64 pend; | |
734 | ||
735 | /* btrfs virtual address space subset filter [vstart..vend) */ | |
736 | __le64 vstart; | |
737 | __le64 vend; | |
738 | ||
739 | /* | |
740 | * profile to convert to, single is denoted by | |
741 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
742 | */ | |
743 | __le64 target; | |
744 | ||
745 | /* BTRFS_BALANCE_ARGS_* */ | |
746 | __le64 flags; | |
747 | ||
748 | __le64 unused[8]; | |
749 | } __attribute__ ((__packed__)); | |
750 | ||
751 | /* | |
752 | * store balance parameters to disk so that balance can be properly | |
753 | * resumed after crash or unmount | |
754 | */ | |
755 | struct btrfs_balance_item { | |
756 | /* BTRFS_BALANCE_* */ | |
757 | __le64 flags; | |
758 | ||
759 | struct btrfs_disk_balance_args data; | |
760 | struct btrfs_disk_balance_args meta; | |
761 | struct btrfs_disk_balance_args sys; | |
762 | ||
763 | __le64 unused[4]; | |
764 | } __attribute__ ((__packed__)); | |
765 | ||
d899e052 YZ |
766 | #define BTRFS_FILE_EXTENT_INLINE 0 |
767 | #define BTRFS_FILE_EXTENT_REG 1 | |
768 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 769 | |
9f5fae2f | 770 | struct btrfs_file_extent_item { |
c8b97818 CM |
771 | /* |
772 | * transaction id that created this extent | |
773 | */ | |
71951f35 | 774 | __le64 generation; |
c8b97818 CM |
775 | /* |
776 | * max number of bytes to hold this extent in ram | |
777 | * when we split a compressed extent we can't know how big | |
778 | * each of the resulting pieces will be. So, this is | |
779 | * an upper limit on the size of the extent in ram instead of | |
780 | * an exact limit. | |
781 | */ | |
782 | __le64 ram_bytes; | |
783 | ||
784 | /* | |
785 | * 32 bits for the various ways we might encode the data, | |
786 | * including compression and encryption. If any of these | |
787 | * are set to something a given disk format doesn't understand | |
788 | * it is treated like an incompat flag for reading and writing, | |
789 | * but not for stat. | |
790 | */ | |
791 | u8 compression; | |
792 | u8 encryption; | |
793 | __le16 other_encoding; /* spare for later use */ | |
794 | ||
795 | /* are we inline data or a real extent? */ | |
236454df | 796 | u8 type; |
c8b97818 | 797 | |
9f5fae2f CM |
798 | /* |
799 | * disk space consumed by the extent, checksum blocks are included | |
800 | * in these numbers | |
801 | */ | |
db94535d CM |
802 | __le64 disk_bytenr; |
803 | __le64 disk_num_bytes; | |
9f5fae2f | 804 | /* |
dee26a9f | 805 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
806 | * this extent record is for. This allows a file extent to point |
807 | * into the middle of an existing extent on disk, sharing it | |
808 | * between two snapshots (useful if some bytes in the middle of the | |
809 | * extent have changed | |
810 | */ | |
811 | __le64 offset; | |
812 | /* | |
c8b97818 CM |
813 | * the logical number of file blocks (no csums included). This |
814 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 815 | */ |
db94535d | 816 | __le64 num_bytes; |
c8b97818 | 817 | |
9f5fae2f CM |
818 | } __attribute__ ((__packed__)); |
819 | ||
f254e52c | 820 | struct btrfs_csum_item { |
509659cd | 821 | u8 csum; |
f254e52c CM |
822 | } __attribute__ ((__packed__)); |
823 | ||
0b86a832 | 824 | /* different types of block groups (and chunks) */ |
52ba6929 ID |
825 | #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) |
826 | #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) | |
827 | #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) | |
828 | #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) | |
829 | #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) | |
830 | #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) | |
831 | #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) | |
a46d11a8 | 832 | #define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE |
52ba6929 ID |
833 | #define BTRFS_NR_RAID_TYPES 5 |
834 | ||
835 | #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \ | |
836 | BTRFS_BLOCK_GROUP_SYSTEM | \ | |
837 | BTRFS_BLOCK_GROUP_METADATA) | |
838 | ||
839 | #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \ | |
840 | BTRFS_BLOCK_GROUP_RAID1 | \ | |
841 | BTRFS_BLOCK_GROUP_DUP | \ | |
842 | BTRFS_BLOCK_GROUP_RAID10) | |
a46d11a8 ID |
843 | /* |
844 | * We need a bit for restriper to be able to tell when chunks of type | |
845 | * SINGLE are available. This "extended" profile format is used in | |
846 | * fs_info->avail_*_alloc_bits (in-memory) and balance item fields | |
847 | * (on-disk). The corresponding on-disk bit in chunk.type is reserved | |
848 | * to avoid remappings between two formats in future. | |
849 | */ | |
850 | #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) | |
851 | ||
9078a3e1 CM |
852 | struct btrfs_block_group_item { |
853 | __le64 used; | |
0b86a832 CM |
854 | __le64 chunk_objectid; |
855 | __le64 flags; | |
9078a3e1 CM |
856 | } __attribute__ ((__packed__)); |
857 | ||
6324fbf3 CM |
858 | struct btrfs_space_info { |
859 | u64 flags; | |
6a63209f | 860 | |
89a55897 JB |
861 | u64 total_bytes; /* total bytes in the space, |
862 | this doesn't take mirrors into account */ | |
b742bb82 | 863 | u64 bytes_used; /* total bytes used, |
e9c54999 | 864 | this doesn't take mirrors into account */ |
6a63209f JB |
865 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
866 | transaction finishes */ | |
867 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
868 | current allocations */ | |
869 | u64 bytes_readonly; /* total bytes that are read only */ | |
8929ecfa | 870 | |
6a63209f | 871 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 872 | delalloc/allocations */ |
b742bb82 | 873 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
874 | u64 disk_total; /* total bytes on disk, takes mirrors into |
875 | account */ | |
6a63209f | 876 | |
36e39c40 CM |
877 | /* |
878 | * we bump reservation progress every time we decrement | |
879 | * bytes_reserved. This way people waiting for reservations | |
880 | * know something good has happened and they can check | |
881 | * for progress. The number here isn't to be trusted, it | |
882 | * just shows reclaim activity | |
883 | */ | |
884 | unsigned long reservation_progress; | |
885 | ||
4ea02885 | 886 | unsigned int full:1; /* indicates that we cannot allocate any more |
6a63209f | 887 | chunks for this space */ |
4ea02885 | 888 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ |
6d74119f | 889 | |
fdb5effd JB |
890 | unsigned int flush:1; /* set if we are trying to make space */ |
891 | ||
4ea02885 DS |
892 | unsigned int force_alloc; /* set if we need to force a chunk |
893 | alloc for this space */ | |
6a63209f | 894 | |
6324fbf3 | 895 | struct list_head list; |
0f9dd46c JB |
896 | |
897 | /* for block groups in our same type */ | |
b742bb82 | 898 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
0f9dd46c | 899 | spinlock_t lock; |
80eb234a | 900 | struct rw_semaphore groups_sem; |
fdb5effd | 901 | wait_queue_head_t wait; |
0f9dd46c JB |
902 | }; |
903 | ||
f0486c68 YZ |
904 | struct btrfs_block_rsv { |
905 | u64 size; | |
906 | u64 reserved; | |
f0486c68 | 907 | struct btrfs_space_info *space_info; |
f0486c68 | 908 | spinlock_t lock; |
c08782da | 909 | unsigned int full; |
f0486c68 YZ |
910 | }; |
911 | ||
fa9c0d79 CM |
912 | /* |
913 | * free clusters are used to claim free space in relatively large chunks, | |
914 | * allowing us to do less seeky writes. They are used for all metadata | |
915 | * allocations and data allocations in ssd mode. | |
916 | */ | |
917 | struct btrfs_free_cluster { | |
918 | spinlock_t lock; | |
919 | spinlock_t refill_lock; | |
920 | struct rb_root root; | |
921 | ||
922 | /* largest extent in this cluster */ | |
923 | u64 max_size; | |
924 | ||
925 | /* first extent starting offset */ | |
926 | u64 window_start; | |
927 | ||
928 | struct btrfs_block_group_cache *block_group; | |
929 | /* | |
930 | * when a cluster is allocated from a block group, we put the | |
931 | * cluster onto a list in the block group so that it can | |
932 | * be freed before the block group is freed. | |
933 | */ | |
934 | struct list_head block_group_list; | |
6324fbf3 CM |
935 | }; |
936 | ||
817d52f8 JB |
937 | enum btrfs_caching_type { |
938 | BTRFS_CACHE_NO = 0, | |
939 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
940 | BTRFS_CACHE_FAST = 2, |
941 | BTRFS_CACHE_FINISHED = 3, | |
817d52f8 JB |
942 | }; |
943 | ||
0af3d00b JB |
944 | enum btrfs_disk_cache_state { |
945 | BTRFS_DC_WRITTEN = 0, | |
946 | BTRFS_DC_ERROR = 1, | |
947 | BTRFS_DC_CLEAR = 2, | |
948 | BTRFS_DC_SETUP = 3, | |
949 | BTRFS_DC_NEED_WRITE = 4, | |
950 | }; | |
951 | ||
11833d66 YZ |
952 | struct btrfs_caching_control { |
953 | struct list_head list; | |
954 | struct mutex mutex; | |
955 | wait_queue_head_t wait; | |
bab39bf9 | 956 | struct btrfs_work work; |
11833d66 YZ |
957 | struct btrfs_block_group_cache *block_group; |
958 | u64 progress; | |
959 | atomic_t count; | |
960 | }; | |
961 | ||
9078a3e1 CM |
962 | struct btrfs_block_group_cache { |
963 | struct btrfs_key key; | |
964 | struct btrfs_block_group_item item; | |
817d52f8 | 965 | struct btrfs_fs_info *fs_info; |
0af3d00b | 966 | struct inode *inode; |
c286ac48 | 967 | spinlock_t lock; |
324ae4df | 968 | u64 pinned; |
e8569813 | 969 | u64 reserved; |
1b2da372 | 970 | u64 bytes_super; |
0b86a832 | 971 | u64 flags; |
96303081 | 972 | u64 sectorsize; |
5b0e95bf | 973 | u64 cache_generation; |
0410c94a MK |
974 | unsigned int ro:1; |
975 | unsigned int dirty:1; | |
976 | unsigned int iref:1; | |
0af3d00b JB |
977 | |
978 | int disk_cache_state; | |
0f9dd46c | 979 | |
817d52f8 | 980 | /* cache tracking stuff */ |
817d52f8 | 981 | int cached; |
11833d66 YZ |
982 | struct btrfs_caching_control *caching_ctl; |
983 | u64 last_byte_to_unpin; | |
817d52f8 | 984 | |
0f9dd46c JB |
985 | struct btrfs_space_info *space_info; |
986 | ||
987 | /* free space cache stuff */ | |
34d52cb6 | 988 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
989 | |
990 | /* block group cache stuff */ | |
991 | struct rb_node cache_node; | |
992 | ||
993 | /* for block groups in the same raid type */ | |
994 | struct list_head list; | |
d2fb3437 YZ |
995 | |
996 | /* usage count */ | |
997 | atomic_t count; | |
fa9c0d79 CM |
998 | |
999 | /* List of struct btrfs_free_clusters for this block group. | |
1000 | * Today it will only have one thing on it, but that may change | |
1001 | */ | |
1002 | struct list_head cluster_list; | |
9078a3e1 | 1003 | }; |
0b86a832 | 1004 | |
5d4f98a2 | 1005 | struct reloc_control; |
0b86a832 | 1006 | struct btrfs_device; |
8a4b83cc | 1007 | struct btrfs_fs_devices; |
c9e9f97b | 1008 | struct btrfs_balance_control; |
16cdcec7 | 1009 | struct btrfs_delayed_root; |
9f5fae2f | 1010 | struct btrfs_fs_info { |
5f39d397 | 1011 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 1012 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
1013 | struct btrfs_root *extent_root; |
1014 | struct btrfs_root *tree_root; | |
0b86a832 CM |
1015 | struct btrfs_root *chunk_root; |
1016 | struct btrfs_root *dev_root; | |
3de4586c | 1017 | struct btrfs_root *fs_root; |
d20f7043 | 1018 | struct btrfs_root *csum_root; |
e02119d5 CM |
1019 | |
1020 | /* the log root tree is a directory of all the other log roots */ | |
1021 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
1022 | |
1023 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 1024 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 1025 | |
0f9dd46c JB |
1026 | /* block group cache stuff */ |
1027 | spinlock_t block_group_cache_lock; | |
1028 | struct rb_root block_group_cache_tree; | |
1029 | ||
2bf64758 JB |
1030 | /* keep track of unallocated space */ |
1031 | spinlock_t free_chunk_lock; | |
1032 | u64 free_chunk_space; | |
1033 | ||
11833d66 YZ |
1034 | struct extent_io_tree freed_extents[2]; |
1035 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 1036 | |
0b86a832 CM |
1037 | /* logical->physical extent mapping */ |
1038 | struct btrfs_mapping_tree mapping_tree; | |
1039 | ||
16cdcec7 MX |
1040 | /* |
1041 | * block reservation for extent, checksum, root tree and | |
1042 | * delayed dir index item | |
1043 | */ | |
f0486c68 YZ |
1044 | struct btrfs_block_rsv global_block_rsv; |
1045 | /* block reservation for delay allocation */ | |
1046 | struct btrfs_block_rsv delalloc_block_rsv; | |
1047 | /* block reservation for metadata operations */ | |
1048 | struct btrfs_block_rsv trans_block_rsv; | |
1049 | /* block reservation for chunk tree */ | |
1050 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
1051 | /* block reservation for delayed operations */ |
1052 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
1053 | |
1054 | struct btrfs_block_rsv empty_block_rsv; | |
1055 | ||
293ffd5f | 1056 | u64 generation; |
15ee9bc7 | 1057 | u64 last_trans_committed; |
12fcfd22 CM |
1058 | |
1059 | /* | |
1060 | * this is updated to the current trans every time a full commit | |
1061 | * is required instead of the faster short fsync log commits | |
1062 | */ | |
1063 | u64 last_trans_log_full_commit; | |
21adbd5c | 1064 | unsigned long mount_opt:21; |
261507a0 | 1065 | unsigned long compress_type:4; |
6f568d35 | 1066 | u64 max_inline; |
8f662a76 | 1067 | u64 alloc_start; |
79154b1b | 1068 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 1069 | wait_queue_head_t transaction_throttle; |
f9295749 | 1070 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 1071 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 1072 | wait_queue_head_t async_submit_wait; |
e02119d5 | 1073 | |
6c41761f DS |
1074 | struct btrfs_super_block *super_copy; |
1075 | struct btrfs_super_block *super_for_commit; | |
0b86a832 | 1076 | struct block_device *__bdev; |
e20d96d6 | 1077 | struct super_block *sb; |
d98237b3 | 1078 | struct inode *btree_inode; |
04160088 | 1079 | struct backing_dev_info bdi; |
e02119d5 | 1080 | struct mutex tree_log_mutex; |
a74a4b97 CM |
1081 | struct mutex transaction_kthread_mutex; |
1082 | struct mutex cleaner_mutex; | |
925baedd | 1083 | struct mutex chunk_mutex; |
7d9eb12c | 1084 | struct mutex volume_mutex; |
5a3f23d5 CM |
1085 | /* |
1086 | * this protects the ordered operations list only while we are | |
1087 | * processing all of the entries on it. This way we make | |
1088 | * sure the commit code doesn't find the list temporarily empty | |
1089 | * because another function happens to be doing non-waiting preflush | |
1090 | * before jumping into the main commit. | |
1091 | */ | |
1092 | struct mutex ordered_operations_mutex; | |
11833d66 | 1093 | struct rw_semaphore extent_commit_sem; |
5a3f23d5 | 1094 | |
c71bf099 | 1095 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 1096 | |
c71bf099 | 1097 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
1098 | struct srcu_struct subvol_srcu; |
1099 | ||
a4abeea4 | 1100 | spinlock_t trans_lock; |
7585717f CM |
1101 | /* |
1102 | * the reloc mutex goes with the trans lock, it is taken | |
1103 | * during commit to protect us from the relocation code | |
1104 | */ | |
1105 | struct mutex reloc_mutex; | |
1106 | ||
8fd17795 | 1107 | struct list_head trans_list; |
19c00ddc | 1108 | struct list_head hashers; |
facda1e7 | 1109 | struct list_head dead_roots; |
11833d66 | 1110 | struct list_head caching_block_groups; |
e02119d5 | 1111 | |
24bbcf04 YZ |
1112 | spinlock_t delayed_iput_lock; |
1113 | struct list_head delayed_iputs; | |
1114 | ||
cb03c743 | 1115 | atomic_t nr_async_submits; |
8c8bee1d | 1116 | atomic_t async_submit_draining; |
0986fe9e | 1117 | atomic_t nr_async_bios; |
771ed689 | 1118 | atomic_t async_delalloc_pages; |
a4abeea4 | 1119 | atomic_t open_ioctl_trans; |
ce9adaa5 | 1120 | |
3eaa2885 CM |
1121 | /* |
1122 | * this is used by the balancing code to wait for all the pending | |
1123 | * ordered extents | |
1124 | */ | |
1125 | spinlock_t ordered_extent_lock; | |
5a3f23d5 CM |
1126 | |
1127 | /* | |
1128 | * all of the data=ordered extents pending writeback | |
1129 | * these can span multiple transactions and basically include | |
1130 | * every dirty data page that isn't from nodatacow | |
1131 | */ | |
3eaa2885 | 1132 | struct list_head ordered_extents; |
5a3f23d5 CM |
1133 | |
1134 | /* | |
1135 | * all of the inodes that have delalloc bytes. It is possible for | |
1136 | * this list to be empty even when there is still dirty data=ordered | |
1137 | * extents waiting to finish IO. | |
1138 | */ | |
ea8c2819 | 1139 | struct list_head delalloc_inodes; |
3eaa2885 | 1140 | |
5a3f23d5 CM |
1141 | /* |
1142 | * special rename and truncate targets that must be on disk before | |
1143 | * we're allowed to commit. This is basically the ext3 style | |
1144 | * data=ordered list. | |
1145 | */ | |
1146 | struct list_head ordered_operations; | |
1147 | ||
8b712842 CM |
1148 | /* |
1149 | * there is a pool of worker threads for checksumming during writes | |
1150 | * and a pool for checksumming after reads. This is because readers | |
1151 | * can run with FS locks held, and the writers may be waiting for | |
1152 | * those locks. We don't want ordering in the pending list to cause | |
1153 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
1154 | * |
1155 | * A third pool does submit_bio to avoid deadlocking with the other | |
1156 | * two | |
8b712842 | 1157 | */ |
61d92c32 | 1158 | struct btrfs_workers generic_worker; |
8b712842 | 1159 | struct btrfs_workers workers; |
771ed689 | 1160 | struct btrfs_workers delalloc_workers; |
8b712842 | 1161 | struct btrfs_workers endio_workers; |
d20f7043 | 1162 | struct btrfs_workers endio_meta_workers; |
cad321ad | 1163 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 1164 | struct btrfs_workers endio_write_workers; |
0cb59c99 | 1165 | struct btrfs_workers endio_freespace_worker; |
1cc127b5 | 1166 | struct btrfs_workers submit_workers; |
bab39bf9 | 1167 | struct btrfs_workers caching_workers; |
90519d66 | 1168 | struct btrfs_workers readahead_workers; |
bab39bf9 | 1169 | |
247e743c CM |
1170 | /* |
1171 | * fixup workers take dirty pages that didn't properly go through | |
1172 | * the cow mechanism and make them safe to write. It happens | |
1173 | * for the sys_munmap function call path | |
1174 | */ | |
1175 | struct btrfs_workers fixup_workers; | |
16cdcec7 | 1176 | struct btrfs_workers delayed_workers; |
a74a4b97 CM |
1177 | struct task_struct *transaction_kthread; |
1178 | struct task_struct *cleaner_kthread; | |
4543df7e | 1179 | int thread_pool_size; |
8b712842 | 1180 | |
58176a96 JB |
1181 | struct kobject super_kobj; |
1182 | struct completion kobj_unregister; | |
e66f709b | 1183 | int do_barriers; |
facda1e7 | 1184 | int closing; |
e02119d5 | 1185 | int log_root_recovering; |
a22285a6 | 1186 | int enospc_unlink; |
a4abeea4 | 1187 | int trans_no_join; |
9f5fae2f | 1188 | |
324ae4df | 1189 | u64 total_pinned; |
b9473439 CM |
1190 | |
1191 | /* protected by the delalloc lock, used to keep from writing | |
1192 | * metadata until there is a nice batch | |
1193 | */ | |
1194 | u64 dirty_metadata_bytes; | |
0b86a832 CM |
1195 | struct list_head dirty_cowonly_roots; |
1196 | ||
8a4b83cc | 1197 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1198 | |
1199 | /* | |
1200 | * the space_info list is almost entirely read only. It only changes | |
1201 | * when we add a new raid type to the FS, and that happens | |
1202 | * very rarely. RCU is used to protect it. | |
1203 | */ | |
6324fbf3 | 1204 | struct list_head space_info; |
4184ea7f | 1205 | |
5d4f98a2 YZ |
1206 | struct reloc_control *reloc_ctl; |
1207 | ||
1832a6d5 CM |
1208 | spinlock_t delalloc_lock; |
1209 | u64 delalloc_bytes; | |
fa9c0d79 CM |
1210 | |
1211 | /* data_alloc_cluster is only used in ssd mode */ | |
1212 | struct btrfs_free_cluster data_alloc_cluster; | |
1213 | ||
1214 | /* all metadata allocations go through this cluster */ | |
1215 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1216 | |
4cb5300b CM |
1217 | /* auto defrag inodes go here */ |
1218 | spinlock_t defrag_inodes_lock; | |
1219 | struct rb_root defrag_inodes; | |
1220 | atomic_t defrag_running; | |
1221 | ||
31153d81 YZ |
1222 | spinlock_t ref_cache_lock; |
1223 | u64 total_ref_cache_size; | |
31153d81 | 1224 | |
a46d11a8 ID |
1225 | /* |
1226 | * these three are in extended format (availability of single | |
1227 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
1228 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
1229 | */ | |
d18a2c44 CM |
1230 | u64 avail_data_alloc_bits; |
1231 | u64 avail_metadata_alloc_bits; | |
1232 | u64 avail_system_alloc_bits; | |
788f20eb | 1233 | |
c9e9f97b ID |
1234 | /* restriper state */ |
1235 | spinlock_t balance_lock; | |
1236 | struct mutex balance_mutex; | |
837d5b6e ID |
1237 | atomic_t balance_running; |
1238 | atomic_t balance_pause_req; | |
a7e99c69 | 1239 | atomic_t balance_cancel_req; |
c9e9f97b | 1240 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1241 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1242 | |
97e728d4 JB |
1243 | unsigned data_chunk_allocations; |
1244 | unsigned metadata_ratio; | |
1245 | ||
788f20eb | 1246 | void *bdev_holder; |
acce952b | 1247 | |
a2de733c AJ |
1248 | /* private scrub information */ |
1249 | struct mutex scrub_lock; | |
1250 | atomic_t scrubs_running; | |
1251 | atomic_t scrub_pause_req; | |
1252 | atomic_t scrubs_paused; | |
1253 | atomic_t scrub_cancel_req; | |
1254 | wait_queue_head_t scrub_pause_wait; | |
1255 | struct rw_semaphore scrub_super_lock; | |
1256 | int scrub_workers_refcnt; | |
1257 | struct btrfs_workers scrub_workers; | |
1258 | ||
21adbd5c SB |
1259 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1260 | u32 check_integrity_print_mask; | |
1261 | #endif | |
1262 | ||
acce952b | 1263 | /* filesystem state */ |
1264 | u64 fs_state; | |
16cdcec7 MX |
1265 | |
1266 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1267 | |
90519d66 AJ |
1268 | /* readahead tree */ |
1269 | spinlock_t reada_lock; | |
1270 | struct radix_tree_root reada_tree; | |
531f4b1a | 1271 | |
af31f5e5 CM |
1272 | /* next backup root to be overwritten */ |
1273 | int backup_root_index; | |
324ae4df | 1274 | }; |
0b86a832 | 1275 | |
9f5fae2f CM |
1276 | /* |
1277 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1278 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1279 | */ |
1280 | struct btrfs_root { | |
5f39d397 | 1281 | struct extent_buffer *node; |
925baedd | 1282 | |
5f39d397 | 1283 | struct extent_buffer *commit_root; |
e02119d5 | 1284 | struct btrfs_root *log_root; |
1a40e23b | 1285 | struct btrfs_root *reloc_root; |
31153d81 | 1286 | |
62e2749e CM |
1287 | struct btrfs_root_item root_item; |
1288 | struct btrfs_key root_key; | |
9f5fae2f | 1289 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1290 | struct extent_io_tree dirty_log_pages; |
1291 | ||
58176a96 JB |
1292 | struct kobject root_kobj; |
1293 | struct completion kobj_unregister; | |
a2135011 | 1294 | struct mutex objectid_mutex; |
7237f183 | 1295 | |
f0486c68 YZ |
1296 | spinlock_t accounting_lock; |
1297 | struct btrfs_block_rsv *block_rsv; | |
1298 | ||
581bb050 LZ |
1299 | /* free ino cache stuff */ |
1300 | struct mutex fs_commit_mutex; | |
1301 | struct btrfs_free_space_ctl *free_ino_ctl; | |
1302 | enum btrfs_caching_type cached; | |
1303 | spinlock_t cache_lock; | |
1304 | wait_queue_head_t cache_wait; | |
1305 | struct btrfs_free_space_ctl *free_ino_pinned; | |
1306 | u64 cache_progress; | |
82d5902d | 1307 | struct inode *cache_inode; |
581bb050 | 1308 | |
e02119d5 | 1309 | struct mutex log_mutex; |
7237f183 YZ |
1310 | wait_queue_head_t log_writer_wait; |
1311 | wait_queue_head_t log_commit_wait[2]; | |
1312 | atomic_t log_writers; | |
1313 | atomic_t log_commit[2]; | |
1314 | unsigned long log_transid; | |
257c62e1 | 1315 | unsigned long last_log_commit; |
7237f183 | 1316 | unsigned long log_batch; |
ff782e0a JB |
1317 | pid_t log_start_pid; |
1318 | bool log_multiple_pids; | |
ea8c2819 | 1319 | |
0f7d52f4 CM |
1320 | u64 objectid; |
1321 | u64 last_trans; | |
5f39d397 CM |
1322 | |
1323 | /* data allocations are done in sectorsize units */ | |
1324 | u32 sectorsize; | |
1325 | ||
1326 | /* node allocations are done in nodesize units */ | |
1327 | u32 nodesize; | |
1328 | ||
1329 | /* leaf allocations are done in leafsize units */ | |
1330 | u32 leafsize; | |
1331 | ||
87ee04eb CM |
1332 | u32 stripesize; |
1333 | ||
9f5fae2f | 1334 | u32 type; |
13a8a7c8 YZ |
1335 | |
1336 | u64 highest_objectid; | |
7585717f CM |
1337 | |
1338 | /* btrfs_record_root_in_trans is a multi-step process, | |
1339 | * and it can race with the balancing code. But the | |
1340 | * race is very small, and only the first time the root | |
1341 | * is added to each transaction. So in_trans_setup | |
1342 | * is used to tell us when more checks are required | |
1343 | */ | |
1344 | unsigned long in_trans_setup; | |
9f3a7427 | 1345 | int ref_cows; |
0b86a832 | 1346 | int track_dirty; |
4df27c4d YZ |
1347 | int in_radix; |
1348 | ||
3f157a2f | 1349 | u64 defrag_trans_start; |
6702ed49 | 1350 | struct btrfs_key defrag_progress; |
0ef3e66b | 1351 | struct btrfs_key defrag_max; |
6702ed49 | 1352 | int defrag_running; |
58176a96 | 1353 | char *name; |
0b86a832 CM |
1354 | |
1355 | /* the dirty list is only used by non-reference counted roots */ | |
1356 | struct list_head dirty_list; | |
7b128766 | 1357 | |
5d4f98a2 YZ |
1358 | struct list_head root_list; |
1359 | ||
d68fc57b | 1360 | spinlock_t orphan_lock; |
7b128766 | 1361 | struct list_head orphan_list; |
d68fc57b YZ |
1362 | struct btrfs_block_rsv *orphan_block_rsv; |
1363 | int orphan_item_inserted; | |
1364 | int orphan_cleanup_state; | |
3394e160 | 1365 | |
5d4f98a2 YZ |
1366 | spinlock_t inode_lock; |
1367 | /* red-black tree that keeps track of in-memory inodes */ | |
1368 | struct rb_root inode_tree; | |
1369 | ||
16cdcec7 MX |
1370 | /* |
1371 | * radix tree that keeps track of delayed nodes of every inode, | |
1372 | * protected by inode_lock | |
1373 | */ | |
1374 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1375 | /* |
1376 | * right now this just gets used so that a root has its own devid | |
1377 | * for stat. It may be used for more later | |
1378 | */ | |
0ee5dc67 | 1379 | dev_t anon_dev; |
f1ebcc74 LB |
1380 | |
1381 | int force_cow; | |
62e2749e CM |
1382 | }; |
1383 | ||
4cb5300b CM |
1384 | struct btrfs_ioctl_defrag_range_args { |
1385 | /* start of the defrag operation */ | |
1386 | __u64 start; | |
1387 | ||
1388 | /* number of bytes to defrag, use (u64)-1 to say all */ | |
1389 | __u64 len; | |
1390 | ||
1391 | /* | |
1392 | * flags for the operation, which can include turning | |
1393 | * on compression for this one defrag | |
1394 | */ | |
1395 | __u64 flags; | |
1396 | ||
1397 | /* | |
1398 | * any extent bigger than this will be considered | |
1399 | * already defragged. Use 0 to take the kernel default | |
1400 | * Use 1 to say every single extent must be rewritten | |
1401 | */ | |
1402 | __u32 extent_thresh; | |
1403 | ||
1404 | /* | |
1405 | * which compression method to use if turning on compression | |
1406 | * for this defrag operation. If unspecified, zlib will | |
1407 | * be used | |
1408 | */ | |
1409 | __u32 compress_type; | |
1410 | ||
1411 | /* spare for later */ | |
1412 | __u32 unused[4]; | |
1413 | }; | |
1414 | ||
1415 | ||
1e1d2701 CM |
1416 | /* |
1417 | * inode items have the data typically returned from stat and store other | |
1418 | * info about object characteristics. There is one for every file and dir in | |
1419 | * the FS | |
1420 | */ | |
9078a3e1 | 1421 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af CM |
1422 | #define BTRFS_INODE_REF_KEY 12 |
1423 | #define BTRFS_XATTR_ITEM_KEY 24 | |
1424 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 1425 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
1426 | |
1427 | /* | |
1428 | * dir items are the name -> inode pointers in a directory. There is one | |
1429 | * for every name in a directory. | |
1430 | */ | |
0660b5af CM |
1431 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
1432 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
1433 | #define BTRFS_DIR_ITEM_KEY 84 | |
1434 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 1435 | /* |
9078a3e1 | 1436 | * extent data is for file data |
1e1d2701 | 1437 | */ |
0660b5af | 1438 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 1439 | |
f254e52c | 1440 | /* |
d20f7043 CM |
1441 | * extent csums are stored in a separate tree and hold csums for |
1442 | * an entire extent on disk. | |
f254e52c | 1443 | */ |
d20f7043 | 1444 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 1445 | |
1e1d2701 | 1446 | /* |
d4a78947 | 1447 | * root items point to tree roots. They are typically in the root |
1e1d2701 CM |
1448 | * tree used by the super block to find all the other trees |
1449 | */ | |
0660b5af CM |
1450 | #define BTRFS_ROOT_ITEM_KEY 132 |
1451 | ||
1452 | /* | |
1453 | * root backrefs tie subvols and snapshots to the directory entries that | |
1454 | * reference them | |
1455 | */ | |
1456 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1457 | ||
1458 | /* | |
1459 | * root refs make a fast index for listing all of the snapshots and | |
1460 | * subvolumes referenced by a given root. They point directly to the | |
1461 | * directory item in the root that references the subvol | |
1462 | */ | |
1463 | #define BTRFS_ROOT_REF_KEY 156 | |
1464 | ||
1e1d2701 CM |
1465 | /* |
1466 | * extent items are in the extent map tree. These record which blocks | |
1467 | * are used, and how many references there are to each block | |
1468 | */ | |
0660b5af | 1469 | #define BTRFS_EXTENT_ITEM_KEY 168 |
5d4f98a2 YZ |
1470 | |
1471 | #define BTRFS_TREE_BLOCK_REF_KEY 176 | |
1472 | ||
1473 | #define BTRFS_EXTENT_DATA_REF_KEY 178 | |
1474 | ||
1475 | #define BTRFS_EXTENT_REF_V0_KEY 180 | |
1476 | ||
1477 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 | |
1478 | ||
1479 | #define BTRFS_SHARED_DATA_REF_KEY 184 | |
9078a3e1 CM |
1480 | |
1481 | /* | |
1482 | * block groups give us hints into the extent allocation trees. Which | |
1483 | * blocks are free etc etc | |
1484 | */ | |
0660b5af | 1485 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 1486 | |
0660b5af CM |
1487 | #define BTRFS_DEV_EXTENT_KEY 204 |
1488 | #define BTRFS_DEV_ITEM_KEY 216 | |
1489 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 1490 | |
0940ebf6 ID |
1491 | #define BTRFS_BALANCE_ITEM_KEY 248 |
1492 | ||
1e1d2701 CM |
1493 | /* |
1494 | * string items are for debugging. They just store a short string of | |
1495 | * data in the FS | |
1496 | */ | |
9078a3e1 CM |
1497 | #define BTRFS_STRING_ITEM_KEY 253 |
1498 | ||
0942caa3 DS |
1499 | /* |
1500 | * Flags for mount options. | |
1501 | * | |
1502 | * Note: don't forget to add new options to btrfs_show_options() | |
1503 | */ | |
21ad10cf CM |
1504 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1505 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1506 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1507 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1508 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1509 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1510 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1511 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1512 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1513 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1514 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1515 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1516 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1517 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1518 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1519 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1520 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1521 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
af31f5e5 | 1522 | #define BTRFS_MOUNT_RECOVERY (1 << 18) |
9555c6c1 | 1523 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1524 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1525 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
b6cda9bc CM |
1526 | |
1527 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
1528 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
1529 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
1530 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
1531 | /* |
1532 | * Inode flags | |
1533 | */ | |
fdebe2bd Y |
1534 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1535 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1536 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1537 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1538 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1539 | #define BTRFS_INODE_SYNC (1 << 5) |
1540 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1541 | #define BTRFS_INODE_APPEND (1 << 7) | |
1542 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1543 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1544 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1545 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1546 | |
08fe4db1 LZ |
1547 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1548 | ||
5f39d397 CM |
1549 | /* some macros to generate set/get funcs for the struct fields. This |
1550 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
1551 | * one for u8: | |
1552 | */ | |
1553 | #define le8_to_cpu(v) (v) | |
1554 | #define cpu_to_le8(v) (v) | |
1555 | #define __le8 u8 | |
1556 | ||
1557 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1558 | read_extent_buffer(eb, (char *)(result), \ | |
1559 | ((unsigned long)(ptr)) + \ | |
1560 | offsetof(type, member), \ | |
1561 | sizeof(((type *)0)->member))) | |
1562 | ||
1563 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1564 | write_extent_buffer(eb, (char *)(result), \ | |
1565 | ((unsigned long)(ptr)) + \ | |
1566 | offsetof(type, member), \ | |
1567 | sizeof(((type *)0)->member))) | |
1568 | ||
0f82731f | 1569 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 1570 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
1571 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
1572 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
1573 | #endif | |
5f39d397 CM |
1574 | |
1575 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1576 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1577 | { \ | |
727011e0 | 1578 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1579 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1580 | return res; \ |
5f39d397 CM |
1581 | } \ |
1582 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1583 | u##bits val) \ | |
1584 | { \ | |
727011e0 | 1585 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1586 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1587 | } |
9078a3e1 | 1588 | |
5f39d397 CM |
1589 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1590 | static inline u##bits btrfs_##name(type *s) \ | |
1591 | { \ | |
1592 | return le##bits##_to_cpu(s->member); \ | |
1593 | } \ | |
1594 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1595 | { \ | |
1596 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1597 | } |
1598 | ||
0b86a832 CM |
1599 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1600 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1601 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1602 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1603 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1604 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1605 | start_offset, 64); | |
0b86a832 CM |
1606 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1607 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1608 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1609 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1610 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1611 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1612 | |
8a4b83cc CM |
1613 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1614 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1615 | total_bytes, 64); | |
1616 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1617 | bytes_used, 64); | |
1618 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1619 | io_align, 32); | |
1620 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1621 | io_width, 32); | |
1622 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1623 | sector_size, 32); | |
1624 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1625 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1626 | dev_group, 32); | |
1627 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1628 | seek_speed, 8); | |
1629 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1630 | bandwidth, 8); | |
2b82032c YZ |
1631 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1632 | generation, 64); | |
8a4b83cc | 1633 | |
0b86a832 CM |
1634 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1635 | { | |
1636 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1637 | } | |
1638 | ||
2b82032c YZ |
1639 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1640 | { | |
1641 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1642 | } | |
1643 | ||
e17cade2 | 1644 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1645 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1646 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1647 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1648 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1649 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1650 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1651 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1652 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1653 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1654 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1655 | ||
e17cade2 CM |
1656 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1657 | { | |
1658 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1659 | } | |
1660 | ||
1661 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1662 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1663 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1664 | stripe_len, 64); | |
1665 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1666 | io_align, 32); | |
1667 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1668 | io_width, 32); | |
1669 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1670 | sector_size, 32); | |
1671 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1672 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1673 | num_stripes, 16); | |
321aecc6 CM |
1674 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1675 | sub_stripes, 16); | |
0b86a832 CM |
1676 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1677 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1678 | ||
1679 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1680 | int nr) | |
1681 | { | |
1682 | unsigned long offset = (unsigned long)c; | |
1683 | offset += offsetof(struct btrfs_chunk, stripe); | |
1684 | offset += nr * sizeof(struct btrfs_stripe); | |
1685 | return (struct btrfs_stripe *)offset; | |
1686 | } | |
1687 | ||
a443755f CM |
1688 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1689 | { | |
1690 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1691 | } | |
1692 | ||
0b86a832 CM |
1693 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1694 | struct btrfs_chunk *c, int nr) | |
1695 | { | |
1696 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1697 | } | |
1698 | ||
0b86a832 CM |
1699 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1700 | struct btrfs_chunk *c, int nr) | |
1701 | { | |
1702 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1703 | } | |
1704 | ||
5f39d397 CM |
1705 | /* struct btrfs_block_group_item */ |
1706 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1707 | used, 64); | |
1708 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1709 | used, 64); | |
0b86a832 CM |
1710 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1711 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1712 | |
1713 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1714 | struct btrfs_block_group_item, chunk_objectid, 64); |
1715 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1716 | struct btrfs_block_group_item, flags, 64); | |
1717 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1718 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1719 | |
3954401f CM |
1720 | /* struct btrfs_inode_ref */ |
1721 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1722 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1723 | |
5f39d397 CM |
1724 | /* struct btrfs_inode_item */ |
1725 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1726 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1727 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1728 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1729 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1730 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1731 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1732 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1733 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1734 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1735 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1736 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 1737 | |
0b86a832 | 1738 | static inline struct btrfs_timespec * |
5f39d397 | 1739 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1740 | { |
5f39d397 CM |
1741 | unsigned long ptr = (unsigned long)inode_item; |
1742 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1743 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1744 | } |
1745 | ||
0b86a832 | 1746 | static inline struct btrfs_timespec * |
5f39d397 | 1747 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1748 | { |
5f39d397 CM |
1749 | unsigned long ptr = (unsigned long)inode_item; |
1750 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1751 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1752 | } |
1753 | ||
0b86a832 | 1754 | static inline struct btrfs_timespec * |
5f39d397 | 1755 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1756 | { |
5f39d397 CM |
1757 | unsigned long ptr = (unsigned long)inode_item; |
1758 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1759 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1760 | } |
1761 | ||
0b86a832 CM |
1762 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1763 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1764 | |
0b86a832 | 1765 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1766 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1767 | chunk_tree, 64); | |
1768 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1769 | chunk_objectid, 64); | |
1770 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1771 | chunk_offset, 64); | |
0b86a832 CM |
1772 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1773 | ||
e17cade2 CM |
1774 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1775 | { | |
1776 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1777 | return (u8 *)((unsigned long)dev + ptr); | |
1778 | } | |
1779 | ||
5d4f98a2 YZ |
1780 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1781 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1782 | generation, 64); | |
1783 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1784 | |
5d4f98a2 YZ |
1785 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1786 | ||
1787 | ||
1788 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1789 | ||
1790 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1791 | struct btrfs_tree_block_info *item, | |
1792 | struct btrfs_disk_key *key) | |
1793 | { | |
1794 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1795 | } | |
1796 | ||
1797 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1798 | struct btrfs_tree_block_info *item, | |
1799 | struct btrfs_disk_key *key) | |
1800 | { | |
1801 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1802 | } | |
e20d96d6 | 1803 | |
5d4f98a2 YZ |
1804 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1805 | root, 64); | |
1806 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1807 | objectid, 64); | |
1808 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1809 | offset, 64); | |
1810 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1811 | count, 32); | |
1812 | ||
1813 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1814 | count, 32); | |
1815 | ||
1816 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1817 | type, 8); | |
1818 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1819 | offset, 64); | |
1820 | ||
1821 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1822 | { | |
1823 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1824 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1825 | return sizeof(struct btrfs_extent_inline_ref); | |
1826 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1827 | return sizeof(struct btrfs_shared_data_ref) + | |
1828 | sizeof(struct btrfs_extent_inline_ref); | |
1829 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1830 | return sizeof(struct btrfs_extent_data_ref) + | |
1831 | offsetof(struct btrfs_extent_inline_ref, offset); | |
1832 | BUG(); | |
1833 | return 0; | |
1834 | } | |
1835 | ||
1836 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1837 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1838 | generation, 64); | |
1839 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1840 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1841 | |
5f39d397 CM |
1842 | /* struct btrfs_node */ |
1843 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1844 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 1845 | |
5f39d397 | 1846 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1847 | { |
5f39d397 CM |
1848 | unsigned long ptr; |
1849 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1850 | sizeof(struct btrfs_key_ptr) * nr; | |
1851 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1852 | } |
1853 | ||
5f39d397 CM |
1854 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1855 | int nr, u64 val) | |
cf27e1ee | 1856 | { |
5f39d397 CM |
1857 | unsigned long ptr; |
1858 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1859 | sizeof(struct btrfs_key_ptr) * nr; | |
1860 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1861 | } |
1862 | ||
74493f7a CM |
1863 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1864 | { | |
1865 | unsigned long ptr; | |
1866 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1867 | sizeof(struct btrfs_key_ptr) * nr; | |
1868 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1869 | } | |
1870 | ||
1871 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1872 | int nr, u64 val) | |
1873 | { | |
1874 | unsigned long ptr; | |
1875 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1876 | sizeof(struct btrfs_key_ptr) * nr; | |
1877 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1878 | } | |
1879 | ||
810191ff | 1880 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1881 | { |
5f39d397 CM |
1882 | return offsetof(struct btrfs_node, ptrs) + |
1883 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1884 | } |
1885 | ||
e644d021 CM |
1886 | void btrfs_node_key(struct extent_buffer *eb, |
1887 | struct btrfs_disk_key *disk_key, int nr); | |
1888 | ||
5f39d397 CM |
1889 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1890 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1891 | { |
5f39d397 CM |
1892 | unsigned long ptr; |
1893 | ptr = btrfs_node_key_ptr_offset(nr); | |
1894 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1895 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1896 | } |
1897 | ||
5f39d397 CM |
1898 | /* struct btrfs_item */ |
1899 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1900 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 1901 | |
5f39d397 | 1902 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1903 | { |
5f39d397 CM |
1904 | return offsetof(struct btrfs_leaf, items) + |
1905 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1906 | } |
1907 | ||
5f39d397 CM |
1908 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
1909 | int nr) | |
0783fcfc | 1910 | { |
5f39d397 | 1911 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1912 | } |
1913 | ||
5f39d397 CM |
1914 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1915 | struct btrfs_item *item) | |
0783fcfc | 1916 | { |
5f39d397 | 1917 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1918 | } |
1919 | ||
5f39d397 | 1920 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1921 | { |
5f39d397 | 1922 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1923 | } |
1924 | ||
5f39d397 | 1925 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1926 | { |
5f39d397 | 1927 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1928 | } |
1929 | ||
5f39d397 | 1930 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1931 | { |
5f39d397 | 1932 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
1933 | } |
1934 | ||
5f39d397 CM |
1935 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1936 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1937 | { |
5f39d397 CM |
1938 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1939 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1940 | } |
1941 | ||
5f39d397 CM |
1942 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1943 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1944 | { |
5f39d397 CM |
1945 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
1946 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
1947 | } |
1948 | ||
e02119d5 CM |
1949 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1950 | ||
0660b5af CM |
1951 | /* |
1952 | * struct btrfs_root_ref | |
1953 | */ | |
1954 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1955 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1956 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1957 | ||
5f39d397 | 1958 | /* struct btrfs_dir_item */ |
5103e947 | 1959 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1960 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1961 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1962 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 1963 | |
5f39d397 CM |
1964 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1965 | struct btrfs_dir_item *item, | |
1966 | struct btrfs_disk_key *key) | |
1d4f6404 | 1967 | { |
5f39d397 | 1968 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1969 | } |
1970 | ||
5f39d397 CM |
1971 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1972 | struct btrfs_dir_item *item, | |
1973 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1974 | { |
5f39d397 | 1975 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1976 | } |
1977 | ||
0af3d00b JB |
1978 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1979 | num_entries, 64); | |
1980 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1981 | num_bitmaps, 64); | |
1982 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1983 | generation, 64); | |
1984 | ||
1985 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
1986 | struct btrfs_free_space_header *h, | |
1987 | struct btrfs_disk_key *key) | |
1988 | { | |
1989 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1990 | } | |
1991 | ||
1992 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1993 | struct btrfs_free_space_header *h, | |
1994 | struct btrfs_disk_key *key) | |
1995 | { | |
1996 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1997 | } | |
1998 | ||
5f39d397 CM |
1999 | /* struct btrfs_disk_key */ |
2000 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2001 | objectid, 64); | |
2002 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2003 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2004 | |
e2fa7227 CM |
2005 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
2006 | struct btrfs_disk_key *disk) | |
2007 | { | |
2008 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2009 | cpu->type = disk->type; |
e2fa7227 CM |
2010 | cpu->objectid = le64_to_cpu(disk->objectid); |
2011 | } | |
2012 | ||
2013 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
2014 | struct btrfs_key *cpu) | |
2015 | { | |
2016 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2017 | disk->type = cpu->type; |
e2fa7227 CM |
2018 | disk->objectid = cpu_to_le64(cpu->objectid); |
2019 | } | |
2020 | ||
5f39d397 CM |
2021 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
2022 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2023 | { |
5f39d397 CM |
2024 | struct btrfs_disk_key disk_key; |
2025 | btrfs_node_key(eb, &disk_key, nr); | |
2026 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2027 | } |
2028 | ||
5f39d397 CM |
2029 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
2030 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2031 | { |
5f39d397 CM |
2032 | struct btrfs_disk_key disk_key; |
2033 | btrfs_item_key(eb, &disk_key, nr); | |
2034 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2035 | } |
2036 | ||
5f39d397 CM |
2037 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
2038 | struct btrfs_dir_item *item, | |
2039 | struct btrfs_key *key) | |
4d775673 | 2040 | { |
5f39d397 CM |
2041 | struct btrfs_disk_key disk_key; |
2042 | btrfs_dir_item_key(eb, item, &disk_key); | |
2043 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2044 | } |
2045 | ||
58176a96 | 2046 | |
5f39d397 | 2047 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 2048 | { |
5f39d397 | 2049 | return key->type; |
3768f368 CM |
2050 | } |
2051 | ||
5f39d397 | 2052 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2053 | { |
5f39d397 | 2054 | key->type = val; |
3768f368 CM |
2055 | } |
2056 | ||
5f39d397 | 2057 | /* struct btrfs_header */ |
db94535d | 2058 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2059 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2060 | generation, 64); | |
2061 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2062 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2063 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2064 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 2065 | |
63b10fc4 CM |
2066 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
2067 | { | |
2068 | return (btrfs_header_flags(eb) & flag) == flag; | |
2069 | } | |
2070 | ||
2071 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2072 | { | |
2073 | u64 flags = btrfs_header_flags(eb); | |
2074 | btrfs_set_header_flags(eb, flags | flag); | |
2075 | return (flags & flag) == flag; | |
2076 | } | |
2077 | ||
2078 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2079 | { | |
2080 | u64 flags = btrfs_header_flags(eb); | |
2081 | btrfs_set_header_flags(eb, flags & ~flag); | |
2082 | return (flags & flag) == flag; | |
2083 | } | |
2084 | ||
5d4f98a2 YZ |
2085 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2086 | { | |
2087 | u64 flags = btrfs_header_flags(eb); | |
2088 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2089 | } | |
2090 | ||
2091 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2092 | int rev) | |
2093 | { | |
2094 | u64 flags = btrfs_header_flags(eb); | |
2095 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2096 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2097 | btrfs_set_header_flags(eb, flags); | |
2098 | } | |
2099 | ||
5f39d397 | 2100 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 2101 | { |
5f39d397 CM |
2102 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
2103 | return (u8 *)ptr; | |
0f7d52f4 CM |
2104 | } |
2105 | ||
e17cade2 CM |
2106 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
2107 | { | |
2108 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
2109 | return (u8 *)ptr; | |
2110 | } | |
2111 | ||
5f39d397 | 2112 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2113 | { |
d397712b | 2114 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2115 | } |
2116 | ||
5f39d397 | 2117 | /* struct btrfs_root_item */ |
84234f3a YZ |
2118 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2119 | generation, 64); | |
5f39d397 | 2120 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2121 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2122 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2123 | |
84234f3a YZ |
2124 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2125 | generation, 64); | |
db94535d CM |
2126 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2127 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2128 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2129 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2130 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2131 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2132 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2133 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2134 | last_snapshot, 64); | |
123abc88 | 2135 | |
b83cc969 LZ |
2136 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2137 | { | |
2138 | return root->root_item.flags & BTRFS_ROOT_SUBVOL_RDONLY; | |
2139 | } | |
2140 | ||
af31f5e5 CM |
2141 | /* struct btrfs_root_backup */ |
2142 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2143 | tree_root, 64); | |
2144 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2145 | tree_root_gen, 64); | |
2146 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2147 | tree_root_level, 8); | |
2148 | ||
2149 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2150 | chunk_root, 64); | |
2151 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2152 | chunk_root_gen, 64); | |
2153 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2154 | chunk_root_level, 8); | |
2155 | ||
2156 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2157 | extent_root, 64); | |
2158 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2159 | extent_root_gen, 64); | |
2160 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2161 | extent_root_level, 8); | |
2162 | ||
2163 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2164 | fs_root, 64); | |
2165 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2166 | fs_root_gen, 64); | |
2167 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2168 | fs_root_level, 8); | |
2169 | ||
2170 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2171 | dev_root, 64); | |
2172 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2173 | dev_root_gen, 64); | |
2174 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2175 | dev_root_level, 8); | |
2176 | ||
2177 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2178 | csum_root, 64); | |
2179 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2180 | csum_root_gen, 64); | |
2181 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2182 | csum_root_level, 8); | |
2183 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2184 | total_bytes, 64); | |
2185 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2186 | bytes_used, 64); | |
2187 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2188 | num_devices, 64); | |
2189 | ||
0940ebf6 ID |
2190 | /* struct btrfs_balance_item */ |
2191 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2192 | |
0940ebf6 ID |
2193 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2194 | struct btrfs_balance_item *bi, | |
2195 | struct btrfs_disk_balance_args *ba) | |
2196 | { | |
2197 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2198 | } | |
2199 | ||
2200 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2201 | struct btrfs_balance_item *bi, | |
2202 | struct btrfs_disk_balance_args *ba) | |
2203 | { | |
2204 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2205 | } | |
2206 | ||
2207 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2208 | struct btrfs_balance_item *bi, | |
2209 | struct btrfs_disk_balance_args *ba) | |
2210 | { | |
2211 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2212 | } | |
2213 | ||
2214 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2215 | struct btrfs_balance_item *bi, | |
2216 | struct btrfs_disk_balance_args *ba) | |
2217 | { | |
2218 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2219 | } | |
2220 | ||
2221 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2222 | struct btrfs_balance_item *bi, | |
2223 | struct btrfs_disk_balance_args *ba) | |
2224 | { | |
2225 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2226 | } | |
2227 | ||
2228 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2229 | struct btrfs_balance_item *bi, | |
2230 | struct btrfs_disk_balance_args *ba) | |
2231 | { | |
2232 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2233 | } | |
2234 | ||
2235 | static inline void | |
2236 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2237 | struct btrfs_disk_balance_args *disk) | |
2238 | { | |
2239 | memset(cpu, 0, sizeof(*cpu)); | |
2240 | ||
2241 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2242 | cpu->usage = le64_to_cpu(disk->usage); | |
2243 | cpu->devid = le64_to_cpu(disk->devid); | |
2244 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2245 | cpu->pend = le64_to_cpu(disk->pend); | |
2246 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2247 | cpu->vend = le64_to_cpu(disk->vend); | |
2248 | cpu->target = le64_to_cpu(disk->target); | |
2249 | cpu->flags = le64_to_cpu(disk->flags); | |
2250 | } | |
2251 | ||
2252 | static inline void | |
2253 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2254 | struct btrfs_balance_args *cpu) | |
2255 | { | |
2256 | memset(disk, 0, sizeof(*disk)); | |
2257 | ||
2258 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2259 | disk->usage = cpu_to_le64(cpu->usage); | |
2260 | disk->devid = cpu_to_le64(cpu->devid); | |
2261 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2262 | disk->pend = cpu_to_le64(cpu->pend); | |
2263 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2264 | disk->vend = cpu_to_le64(cpu->vend); | |
2265 | disk->target = cpu_to_le64(cpu->target); | |
2266 | disk->flags = cpu_to_le64(cpu->flags); | |
2267 | } | |
2268 | ||
2269 | /* struct btrfs_super_block */ | |
db94535d | 2270 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2271 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2272 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2273 | generation, 64); | |
2274 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2275 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2276 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2277 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2278 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2279 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2280 | root_level, 8); | |
0b86a832 CM |
2281 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2282 | chunk_root, 64); | |
2283 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2284 | chunk_root_level, 8); |
2285 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2286 | log_root, 64); | |
c3027eb5 CM |
2287 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2288 | log_root_transid, 64); | |
e02119d5 CM |
2289 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2290 | log_root_level, 8); | |
db94535d CM |
2291 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2292 | total_bytes, 64); | |
2293 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2294 | bytes_used, 64); | |
5f39d397 CM |
2295 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2296 | sectorsize, 32); | |
2297 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2298 | nodesize, 32); | |
2299 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
2300 | leafsize, 32); | |
87ee04eb CM |
2301 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2302 | stripesize, 32); | |
5f39d397 CM |
2303 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2304 | root_dir_objectid, 64); | |
8a4b83cc CM |
2305 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2306 | num_devices, 64); | |
f2b636e8 JB |
2307 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2308 | compat_flags, 64); | |
2309 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2310 | compat_ro_flags, 64); |
f2b636e8 JB |
2311 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2312 | incompat_flags, 64); | |
607d432d JB |
2313 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2314 | csum_type, 16); | |
0af3d00b JB |
2315 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2316 | cache_generation, 64); | |
607d432d JB |
2317 | |
2318 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2319 | { | |
2320 | int t = btrfs_super_csum_type(s); | |
2321 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
2322 | return btrfs_csum_sizes[t]; | |
2323 | } | |
2e635a27 | 2324 | |
5f39d397 | 2325 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2326 | { |
5f39d397 | 2327 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2328 | } |
2329 | ||
5f39d397 CM |
2330 | /* struct btrfs_file_extent_item */ |
2331 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 2332 | |
d397712b CM |
2333 | static inline unsigned long |
2334 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2335 | { |
5f39d397 | 2336 | unsigned long offset = (unsigned long)e; |
db94535d | 2337 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 2338 | return offset; |
236454df CM |
2339 | } |
2340 | ||
2341 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2342 | { | |
db94535d | 2343 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
2344 | } |
2345 | ||
db94535d CM |
2346 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2347 | disk_bytenr, 64); | |
5f39d397 CM |
2348 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2349 | generation, 64); | |
db94535d CM |
2350 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2351 | disk_num_bytes, 64); | |
5f39d397 CM |
2352 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2353 | offset, 64); | |
db94535d CM |
2354 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2355 | num_bytes, 64); | |
c8b97818 CM |
2356 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2357 | ram_bytes, 64); | |
2358 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2359 | compression, 8); | |
2360 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2361 | encryption, 8); | |
2362 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2363 | other_encoding, 16); | |
2364 | ||
2365 | /* this returns the number of file bytes represented by the inline item. | |
2366 | * If an item is compressed, this is the uncompressed size | |
2367 | */ | |
2368 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2369 | struct btrfs_file_extent_item *e) | |
2370 | { | |
2371 | return btrfs_file_extent_ram_bytes(eb, e); | |
2372 | } | |
2373 | ||
2374 | /* | |
2375 | * this returns the number of bytes used by the item on disk, minus the | |
2376 | * size of any extent headers. If a file is compressed on disk, this is | |
2377 | * the compressed size | |
2378 | */ | |
2379 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2380 | struct btrfs_item *e) | |
2381 | { | |
2382 | unsigned long offset; | |
2383 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
2384 | return btrfs_item_size(eb, e) - offset; | |
2385 | } | |
9f5fae2f | 2386 | |
815745cf | 2387 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
e20d96d6 CM |
2388 | { |
2389 | return sb->s_fs_info; | |
2390 | } | |
2391 | ||
d397712b CM |
2392 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
2393 | { | |
db94535d CM |
2394 | if (level == 0) |
2395 | return root->leafsize; | |
2396 | return root->nodesize; | |
2397 | } | |
2398 | ||
4beb1b8b CM |
2399 | /* helper function to cast into the data area of the leaf. */ |
2400 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2401 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2402 | btrfs_item_offset_nr(leaf, slot))) |
2403 | ||
2404 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2405 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2406 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2407 | |
2b1f55b0 CM |
2408 | static inline struct dentry *fdentry(struct file *file) |
2409 | { | |
6da6abae | 2410 | return file->f_path.dentry; |
6da6abae CM |
2411 | } |
2412 | ||
67377734 JB |
2413 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2414 | { | |
2415 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2416 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2417 | } | |
2418 | ||
3b16a4e3 JB |
2419 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2420 | { | |
2421 | return mapping_gfp_mask(mapping) & ~__GFP_FS; | |
2422 | } | |
2423 | ||
b18c6685 | 2424 | /* extent-tree.c */ |
16cdcec7 | 2425 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 2426 | unsigned num_items) |
16cdcec7 MX |
2427 | { |
2428 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
2429 | 3 * num_items; | |
07127184 JB |
2430 | } |
2431 | ||
2432 | /* | |
2433 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2434 | * COW. | |
2435 | */ | |
2436 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, | |
2437 | unsigned num_items) | |
2438 | { | |
2439 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
2440 | num_items; | |
16cdcec7 MX |
2441 | } |
2442 | ||
fa9c0d79 | 2443 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
2444 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2445 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 2446 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
2447 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2448 | struct btrfs_root *root, u64 bytenr, | |
2449 | u64 num_bytes, u64 *refs, u64 *flags); | |
11833d66 YZ |
2450 | int btrfs_pin_extent(struct btrfs_root *root, |
2451 | u64 bytenr, u64 num, int reserved); | |
e688b725 CM |
2452 | int btrfs_pin_extent_for_log_replay(struct btrfs_trans_handle *trans, |
2453 | struct btrfs_root *root, | |
2454 | u64 bytenr, u64 num_bytes); | |
80ff3856 | 2455 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2456 | struct btrfs_root *root, |
2457 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
2458 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2459 | struct btrfs_fs_info *info, | |
2460 | u64 bytenr); | |
5d4f98a2 | 2461 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
d2fb3437 YZ |
2462 | u64 btrfs_find_block_group(struct btrfs_root *root, |
2463 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 2464 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2465 | struct btrfs_root *root, u32 blocksize, |
2466 | u64 parent, u64 root_objectid, | |
2467 | struct btrfs_disk_key *key, int level, | |
66d7e7f0 | 2468 | u64 hint, u64 empty_size, int for_cow); |
f0486c68 YZ |
2469 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2470 | struct btrfs_root *root, | |
2471 | struct extent_buffer *buf, | |
66d7e7f0 | 2472 | u64 parent, int last_ref, int for_cow); |
65b51a00 CM |
2473 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
2474 | struct btrfs_root *root, | |
4008c04a CM |
2475 | u64 bytenr, u32 blocksize, |
2476 | int level); | |
5d4f98a2 YZ |
2477 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
2478 | struct btrfs_root *root, | |
2479 | u64 root_objectid, u64 owner, | |
2480 | u64 offset, struct btrfs_key *ins); | |
2481 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, | |
2482 | struct btrfs_root *root, | |
2483 | u64 root_objectid, u64 owner, u64 offset, | |
2484 | struct btrfs_key *ins); | |
e6dcd2dc CM |
2485 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
2486 | struct btrfs_root *root, | |
2487 | u64 num_bytes, u64 min_alloc_size, | |
2488 | u64 empty_size, u64 hint_byte, | |
81c9ad23 | 2489 | struct btrfs_key *ins, u64 data); |
e089f05c | 2490 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 2491 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 | 2492 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 2493 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 YZ |
2494 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2495 | struct btrfs_root *root, | |
2496 | u64 bytenr, u64 num_bytes, u64 flags, | |
2497 | int is_data); | |
31840ae1 ZY |
2498 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2499 | struct btrfs_root *root, | |
66d7e7f0 AJ |
2500 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
2501 | u64 owner, u64 offset, int for_cow); | |
5d4f98a2 | 2502 | |
65b51a00 | 2503 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
e688b725 CM |
2504 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
2505 | u64 start, u64 len); | |
11833d66 YZ |
2506 | int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
2507 | struct btrfs_root *root); | |
ccd467d6 | 2508 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 2509 | struct btrfs_root *root); |
b18c6685 | 2510 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
2511 | struct btrfs_root *root, |
2512 | u64 bytenr, u64 num_bytes, u64 parent, | |
66d7e7f0 | 2513 | u64 root_objectid, u64 owner, u64 offset, int for_cow); |
5d4f98a2 | 2514 | |
9078a3e1 CM |
2515 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2516 | struct btrfs_root *root); | |
d2fb3437 | 2517 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
2518 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
2519 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 2520 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
2521 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2522 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 2523 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2524 | u64 size); |
1a40e23b ZY |
2525 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
2526 | struct btrfs_root *root, u64 group_start); | |
2b82032c | 2527 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
6d07bcec | 2528 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
6a63209f | 2529 | void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde); |
4184ea7f | 2530 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
0ca1f7ce YZ |
2531 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
2532 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); | |
a22285a6 YZ |
2533 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2534 | struct btrfs_root *root); | |
d68fc57b YZ |
2535 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
2536 | struct inode *inode); | |
2537 | void btrfs_orphan_release_metadata(struct inode *inode); | |
a22285a6 YZ |
2538 | int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans, |
2539 | struct btrfs_pending_snapshot *pending); | |
0ca1f7ce YZ |
2540 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
2541 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
2542 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); | |
2543 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); | |
f0486c68 YZ |
2544 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv); |
2545 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root); | |
2546 | void btrfs_free_block_rsv(struct btrfs_root *root, | |
2547 | struct btrfs_block_rsv *rsv); | |
4a92b1b8 | 2548 | int btrfs_block_rsv_add(struct btrfs_root *root, |
f0486c68 | 2549 | struct btrfs_block_rsv *block_rsv, |
8bb8ab2e | 2550 | u64 num_bytes); |
c06a0e12 JB |
2551 | int btrfs_block_rsv_add_noflush(struct btrfs_root *root, |
2552 | struct btrfs_block_rsv *block_rsv, | |
2553 | u64 num_bytes); | |
4a92b1b8 | 2554 | int btrfs_block_rsv_check(struct btrfs_root *root, |
36ba022a JB |
2555 | struct btrfs_block_rsv *block_rsv, int min_factor); |
2556 | int btrfs_block_rsv_refill(struct btrfs_root *root, | |
f0486c68 | 2557 | struct btrfs_block_rsv *block_rsv, |
36ba022a | 2558 | u64 min_reserved); |
aa38a711 MX |
2559 | int btrfs_block_rsv_refill_noflush(struct btrfs_root *root, |
2560 | struct btrfs_block_rsv *block_rsv, | |
2561 | u64 min_reserved); | |
f0486c68 YZ |
2562 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
2563 | struct btrfs_block_rsv *dst_rsv, | |
2564 | u64 num_bytes); | |
2565 | void btrfs_block_rsv_release(struct btrfs_root *root, | |
2566 | struct btrfs_block_rsv *block_rsv, | |
2567 | u64 num_bytes); | |
2568 | int btrfs_set_block_group_ro(struct btrfs_root *root, | |
2569 | struct btrfs_block_group_cache *cache); | |
2570 | int btrfs_set_block_group_rw(struct btrfs_root *root, | |
2571 | struct btrfs_block_group_cache *cache); | |
0af3d00b | 2572 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2573 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 2574 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
2575 | u64 start, u64 end); | |
2576 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, | |
5378e607 | 2577 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca CM |
2578 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2579 | struct btrfs_root *root, u64 type); | |
f7039b1d | 2580 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 2581 | |
c59021f8 | 2582 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
dee26a9f | 2583 | /* ctree.c */ |
5d4f98a2 YZ |
2584 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
2585 | int level, int *slot); | |
2586 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
2587 | int btrfs_previous_item(struct btrfs_root *root, |
2588 | struct btrfs_path *path, u64 min_objectid, | |
2589 | int type); | |
31840ae1 ZY |
2590 | int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
2591 | struct btrfs_root *root, struct btrfs_path *path, | |
2592 | struct btrfs_key *new_key); | |
925baedd CM |
2593 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2594 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2595 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
2596 | struct btrfs_key *key, int lowest_level, |
2597 | int cache_only, u64 min_trans); | |
2598 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 2599 | struct btrfs_key *max_key, |
3f157a2f CM |
2600 | struct btrfs_path *path, int cache_only, |
2601 | u64 min_trans); | |
5f39d397 CM |
2602 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2603 | struct btrfs_root *root, struct extent_buffer *buf, | |
2604 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2605 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2606 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2607 | struct btrfs_root *root, | |
2608 | struct extent_buffer *buf, | |
2609 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2610 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2611 | struct extent_buffer *buf); | |
6567e837 CM |
2612 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2613 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
2614 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
2615 | struct btrfs_root *root, | |
2616 | struct btrfs_path *path, | |
179e29e4 | 2617 | u32 new_size, int from_end); |
459931ec CM |
2618 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2619 | struct btrfs_root *root, | |
2620 | struct btrfs_path *path, | |
2621 | struct btrfs_key *new_key, | |
2622 | unsigned long split_offset); | |
ad48fd75 YZ |
2623 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2624 | struct btrfs_root *root, | |
2625 | struct btrfs_path *path, | |
2626 | struct btrfs_key *new_key); | |
e089f05c CM |
2627 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
2628 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
2629 | ins_len, int cow); | |
6702ed49 | 2630 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2631 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
2632 | int start_slot, int cache_only, u64 *last_ret, |
2633 | struct btrfs_key *progress); | |
b3b4aa74 | 2634 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2635 | struct btrfs_path *btrfs_alloc_path(void); |
2636 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2637 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 2638 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 2639 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
2640 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2641 | ||
85e21bac CM |
2642 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2643 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2644 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2645 | struct btrfs_root *root, | |
2646 | struct btrfs_path *path) | |
2647 | { | |
2648 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2649 | } | |
2650 | ||
16cdcec7 MX |
2651 | int setup_items_for_insert(struct btrfs_trans_handle *trans, |
2652 | struct btrfs_root *root, struct btrfs_path *path, | |
2653 | struct btrfs_key *cpu_key, u32 *data_size, | |
2654 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
2655 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2656 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2657 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2658 | struct btrfs_root *root, | |
2659 | struct btrfs_path *path, | |
2660 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
2661 | ||
2662 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2663 | struct btrfs_root *root, | |
2664 | struct btrfs_path *path, | |
2665 | struct btrfs_key *key, | |
2666 | u32 data_size) | |
2667 | { | |
2668 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2669 | } | |
2670 | ||
234b63a0 | 2671 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
c7d22a3c JS |
2672 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2673 | { | |
2674 | ++p->slots[0]; | |
2675 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
2676 | return btrfs_next_leaf(root, p); | |
2677 | return 0; | |
2678 | } | |
7bb86316 | 2679 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 2680 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
cb1b69f4 | 2681 | void btrfs_drop_snapshot(struct btrfs_root *root, |
66d7e7f0 AJ |
2682 | struct btrfs_block_rsv *block_rsv, int update_ref, |
2683 | int for_reloc); | |
f82d02d9 YZ |
2684 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2685 | struct btrfs_root *root, | |
2686 | struct extent_buffer *node, | |
2687 | struct extent_buffer *parent); | |
7841cb28 DS |
2688 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2689 | { | |
2690 | /* | |
2691 | * Get synced with close_ctree() | |
2692 | */ | |
2693 | smp_mb(); | |
2694 | return fs_info->closing; | |
2695 | } | |
6c41761f DS |
2696 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
2697 | { | |
837d5b6e | 2698 | kfree(fs_info->balance_ctl); |
6c41761f DS |
2699 | kfree(fs_info->delayed_root); |
2700 | kfree(fs_info->extent_root); | |
2701 | kfree(fs_info->tree_root); | |
2702 | kfree(fs_info->chunk_root); | |
2703 | kfree(fs_info->dev_root); | |
2704 | kfree(fs_info->csum_root); | |
2705 | kfree(fs_info->super_copy); | |
2706 | kfree(fs_info->super_for_commit); | |
2707 | kfree(fs_info); | |
2708 | } | |
70922617 ID |
2709 | /** |
2710 | * profile_is_valid - tests whether a given profile is valid and reduced | |
2711 | * @flags: profile to validate | |
2712 | * @extended: if true @flags is treated as an extended profile | |
2713 | */ | |
2714 | static inline int profile_is_valid(u64 flags, int extended) | |
2715 | { | |
2716 | u64 mask = ~BTRFS_BLOCK_GROUP_PROFILE_MASK; | |
2717 | ||
2718 | flags &= ~BTRFS_BLOCK_GROUP_TYPE_MASK; | |
2719 | if (extended) | |
2720 | mask &= ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
2721 | ||
2722 | if (flags & mask) | |
2723 | return 0; | |
2724 | /* true if zero or exactly one bit set */ | |
2725 | return (flags & (~flags + 1)) == flags; | |
2726 | } | |
7841cb28 | 2727 | |
dee26a9f | 2728 | /* root-item.c */ |
ea9e8b11 | 2729 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
2730 | struct btrfs_path *path, |
2731 | u64 root_id, u64 ref_id); | |
0660b5af CM |
2732 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
2733 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
2734 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2735 | const char *name, int name_len); | |
2736 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
2737 | struct btrfs_root *tree_root, | |
2738 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 2739 | const char *name, int name_len); |
e089f05c CM |
2740 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2741 | struct btrfs_key *key); | |
2742 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2743 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2744 | *item); | |
2745 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2746 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2747 | *item); | |
2748 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
2749 | btrfs_root_item *item, struct btrfs_key *key); | |
5d4f98a2 | 2750 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid); |
76dda93c | 2751 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
2752 | void btrfs_set_root_node(struct btrfs_root_item *item, |
2753 | struct extent_buffer *node); | |
08fe4db1 LZ |
2754 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
2755 | ||
dee26a9f | 2756 | /* dir-item.c */ |
d397712b CM |
2757 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
2758 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 2759 | int name_len, struct inode *dir, |
aec7477b | 2760 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
2761 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
2762 | struct btrfs_root *root, | |
2763 | struct btrfs_path *path, u64 dir, | |
2764 | const char *name, int name_len, | |
2765 | int mod); | |
2766 | struct btrfs_dir_item * | |
2767 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
2768 | struct btrfs_root *root, | |
2769 | struct btrfs_path *path, u64 dir, | |
2770 | u64 objectid, const char *name, int name_len, | |
2771 | int mod); | |
4df27c4d YZ |
2772 | struct btrfs_dir_item * |
2773 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
2774 | struct btrfs_path *path, u64 dirid, | |
2775 | const char *name, int name_len); | |
7e38180e CM |
2776 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
2777 | struct btrfs_path *path, | |
7f5c1516 | 2778 | const char *name, int name_len); |
7e38180e CM |
2779 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
2780 | struct btrfs_root *root, | |
2781 | struct btrfs_path *path, | |
2782 | struct btrfs_dir_item *di); | |
5103e947 | 2783 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
2784 | struct btrfs_root *root, |
2785 | struct btrfs_path *path, u64 objectid, | |
2786 | const char *name, u16 name_len, | |
2787 | const void *data, u16 data_len); | |
5103e947 JB |
2788 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
2789 | struct btrfs_root *root, | |
2790 | struct btrfs_path *path, u64 dir, | |
2791 | const char *name, u16 name_len, | |
2792 | int mod); | |
22a94d44 JB |
2793 | int verify_dir_item(struct btrfs_root *root, |
2794 | struct extent_buffer *leaf, | |
2795 | struct btrfs_dir_item *dir_item); | |
7b128766 JB |
2796 | |
2797 | /* orphan.c */ | |
2798 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
2799 | struct btrfs_root *root, u64 offset); | |
2800 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
2801 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 2802 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 2803 | |
dee26a9f | 2804 | /* inode-item.c */ |
3954401f CM |
2805 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
2806 | struct btrfs_root *root, | |
2807 | const char *name, int name_len, | |
aec7477b | 2808 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
2809 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
2810 | struct btrfs_root *root, | |
2811 | const char *name, int name_len, | |
aec7477b | 2812 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
a22285a6 YZ |
2813 | struct btrfs_inode_ref * |
2814 | btrfs_lookup_inode_ref(struct btrfs_trans_handle *trans, | |
2815 | struct btrfs_root *root, | |
2816 | struct btrfs_path *path, | |
2817 | const char *name, int name_len, | |
2818 | u64 inode_objectid, u64 ref_objectid, int mod); | |
5f39d397 CM |
2819 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
2820 | struct btrfs_root *root, | |
2821 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 2822 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
2823 | *root, struct btrfs_path *path, |
2824 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
2825 | |
2826 | /* file-item.c */ | |
459931ec CM |
2827 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
2828 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 2829 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2830 | struct bio *bio, u32 *dst); |
4b46fce2 JB |
2831 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
2832 | struct bio *bio, u64 logical_offset, u32 *dst); | |
b18c6685 | 2833 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
2834 | struct btrfs_root *root, |
2835 | u64 objectid, u64 pos, | |
2836 | u64 disk_offset, u64 disk_num_bytes, | |
2837 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
2838 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
2839 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
2840 | struct btrfs_root *root, | |
2841 | struct btrfs_path *path, u64 objectid, | |
db94535d | 2842 | u64 bytenr, int mod); |
065631f6 | 2843 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 2844 | struct btrfs_root *root, |
e6dcd2dc | 2845 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 2846 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 2847 | struct bio *bio, u64 file_start, int contig); |
b18c6685 CM |
2848 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
2849 | struct btrfs_root *root, | |
2850 | struct btrfs_path *path, | |
d20f7043 | 2851 | u64 bytenr, int cow); |
1de037a4 CM |
2852 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
2853 | struct btrfs_root *root, struct btrfs_path *path, | |
2854 | u64 isize); | |
a2de733c AJ |
2855 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
2856 | struct list_head *list, int search_commit); | |
39279cc3 | 2857 | /* inode.c */ |
b2675157 JB |
2858 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
2859 | size_t pg_offset, u64 start, u64 len, | |
2860 | int create); | |
4881ee5a CM |
2861 | |
2862 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 2863 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
2864 | #define ClearPageChecked ClearPageFsMisc |
2865 | #define SetPageChecked SetPageFsMisc | |
2866 | #define PageChecked PageFsMisc | |
2867 | #endif | |
2868 | ||
b6973aa6 LZ |
2869 | /* This forces readahead on a given range of bytes in an inode */ |
2870 | static inline void btrfs_force_ra(struct address_space *mapping, | |
2871 | struct file_ra_state *ra, struct file *file, | |
2872 | pgoff_t offset, unsigned long req_size) | |
2873 | { | |
2874 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
2875 | } | |
2876 | ||
3de4586c CM |
2877 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
2878 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
2879 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
2880 | struct btrfs_root *root, | |
2881 | struct inode *dir, struct inode *inode, | |
2882 | const char *name, int name_len); | |
2883 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
2884 | struct inode *parent_inode, struct inode *inode, | |
2885 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
2886 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
2887 | struct btrfs_root *root, | |
2888 | struct inode *dir, u64 objectid, | |
2889 | const char *name, int name_len); | |
e02119d5 CM |
2890 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
2891 | struct btrfs_root *root, | |
2892 | struct inode *inode, u64 new_size, | |
2893 | u32 min_type); | |
2894 | ||
24bbcf04 | 2895 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
2ac55d41 JB |
2896 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
2897 | struct extent_state **cached_state); | |
f421950f CM |
2898 | int btrfs_writepages(struct address_space *mapping, |
2899 | struct writeback_control *wbc); | |
d2fb3437 | 2900 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
d82a6f1d | 2901 | struct btrfs_root *new_root, u64 new_dirid); |
239b14b3 | 2902 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 2903 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 2904 | |
c2ec175c | 2905 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 2906 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 2907 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 2908 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
22c44fe6 JB |
2909 | int btrfs_dirty_inode(struct inode *inode); |
2910 | int btrfs_update_time(struct file *file); | |
39279cc3 CM |
2911 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
2912 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 2913 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
2914 | int btrfs_init_cachep(void); |
2915 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 2916 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 2917 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 2918 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 2919 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 2920 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
2921 | int create); |
2922 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
2923 | struct btrfs_root *root, | |
2924 | struct inode *inode); | |
5b21f2ed ZY |
2925 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
2926 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
66b4ffd1 | 2927 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
2928 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
2929 | struct btrfs_root *root); | |
a41ad394 | 2930 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
76dda93c | 2931 | int btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
2932 | void btrfs_add_delayed_iput(struct inode *inode); |
2933 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
2934 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
2935 | u64 start, u64 num_bytes, u64 min_size, | |
2936 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
2937 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
2938 | struct btrfs_trans_handle *trans, int mode, | |
2939 | u64 start, u64 num_bytes, u64 min_size, | |
2940 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 2941 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
2942 | |
2943 | /* ioctl.c */ | |
2944 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
6cbff00f CH |
2945 | void btrfs_update_iflags(struct inode *inode); |
2946 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
4cb5300b CM |
2947 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
2948 | struct btrfs_ioctl_defrag_range_args *range, | |
2949 | u64 newer_than, unsigned long max_pages); | |
39279cc3 | 2950 | /* file.c */ |
4cb5300b CM |
2951 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
2952 | struct inode *inode); | |
2953 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
02c24a82 | 2954 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
5b21f2ed ZY |
2955 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
2956 | int skip_pinned); | |
828c0950 | 2957 | extern const struct file_operations btrfs_file_operations; |
920bbbfb YZ |
2958 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode, |
2959 | u64 start, u64 end, u64 *hint_byte, int drop_cache); | |
d899e052 | 2960 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 2961 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 2962 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
2963 | void btrfs_drop_pages(struct page **pages, size_t num_pages); |
2964 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, | |
2965 | struct page **pages, size_t num_pages, | |
2966 | loff_t pos, size_t write_bytes, | |
2967 | struct extent_state **cached); | |
6bf13c0c | 2968 | |
6702ed49 CM |
2969 | /* tree-defrag.c */ |
2970 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
2971 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
2972 | |
2973 | /* sysfs.c */ | |
2974 | int btrfs_init_sysfs(void); | |
2975 | void btrfs_exit_sysfs(void); | |
58176a96 | 2976 | |
5103e947 JB |
2977 | /* xattr.c */ |
2978 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 2979 | |
edbd8d4e | 2980 | /* super.c */ |
edf24abe | 2981 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 2982 | int btrfs_sync_fs(struct super_block *sb, int wait); |
acce952b | 2983 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
2984 | unsigned int line, int errno); | |
2985 | ||
2986 | #define btrfs_std_error(fs_info, errno) \ | |
2987 | do { \ | |
2988 | if ((errno)) \ | |
2989 | __btrfs_std_error((fs_info), __func__, __LINE__, (errno));\ | |
2990 | } while (0) | |
33268eaf JB |
2991 | |
2992 | /* acl.c */ | |
0eda294d | 2993 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 2994 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
f34f57a3 YZ |
2995 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
2996 | struct inode *inode, struct inode *dir); | |
33268eaf | 2997 | int btrfs_acl_chmod(struct inode *inode); |
9b89d95a | 2998 | #else |
ed8f3737 | 2999 | #define btrfs_get_acl NULL |
9b89d95a LZ |
3000 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3001 | struct inode *inode, struct inode *dir) | |
3002 | { | |
3003 | return 0; | |
3004 | } | |
3005 | static inline int btrfs_acl_chmod(struct inode *inode) | |
3006 | { | |
3007 | return 0; | |
3008 | } | |
3009 | #endif | |
0f9dd46c | 3010 | |
5d4f98a2 YZ |
3011 | /* relocation.c */ |
3012 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
3013 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
3014 | struct btrfs_root *root); | |
3015 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3016 | struct btrfs_root *root); | |
3017 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3018 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
3fd0a558 YZ |
3019 | void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3020 | struct btrfs_root *root, struct extent_buffer *buf, | |
3021 | struct extent_buffer *cow); | |
3022 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, | |
3023 | struct btrfs_pending_snapshot *pending, | |
3024 | u64 *bytes_to_reserve); | |
3025 | void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, | |
3026 | struct btrfs_pending_snapshot *pending); | |
a2de733c AJ |
3027 | |
3028 | /* scrub.c */ | |
3029 | int btrfs_scrub_dev(struct btrfs_root *root, u64 devid, u64 start, u64 end, | |
8628764e | 3030 | struct btrfs_scrub_progress *progress, int readonly); |
a2de733c AJ |
3031 | int btrfs_scrub_pause(struct btrfs_root *root); |
3032 | int btrfs_scrub_pause_super(struct btrfs_root *root); | |
3033 | int btrfs_scrub_continue(struct btrfs_root *root); | |
3034 | int btrfs_scrub_continue_super(struct btrfs_root *root); | |
3035 | int btrfs_scrub_cancel(struct btrfs_root *root); | |
3036 | int btrfs_scrub_cancel_dev(struct btrfs_root *root, struct btrfs_device *dev); | |
3037 | int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid); | |
3038 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, | |
3039 | struct btrfs_scrub_progress *progress); | |
3040 | ||
7414a03f AJ |
3041 | /* reada.c */ |
3042 | struct reada_control { | |
3043 | struct btrfs_root *root; /* tree to prefetch */ | |
3044 | struct btrfs_key key_start; | |
3045 | struct btrfs_key key_end; /* exclusive */ | |
3046 | atomic_t elems; | |
3047 | struct kref refcnt; | |
3048 | wait_queue_head_t wait; | |
3049 | }; | |
3050 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3051 | struct btrfs_key *start, struct btrfs_key *end); | |
3052 | int btrfs_reada_wait(void *handle); | |
3053 | void btrfs_reada_detach(void *handle); | |
3054 | int btree_readahead_hook(struct btrfs_root *root, struct extent_buffer *eb, | |
3055 | u64 start, int err); | |
3056 | ||
eb60ceac | 3057 | #endif |