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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 | |
94598ba8 SB |
51 | #define BTRFS_MAX_MIRRORS 2 |
52 | ||
4008c04a | 53 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 54 | |
5d4f98a2 YZ |
55 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
56 | ||
5a3f23d5 CM |
57 | /* |
58 | * files bigger than this get some pre-flushing when they are added | |
59 | * to the ordered operations list. That way we limit the total | |
60 | * work done by the commit | |
61 | */ | |
62 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) | |
63 | ||
0b86a832 | 64 | /* holds pointers to all of the tree roots */ |
6407bf6d | 65 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
66 | |
67 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 68 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 69 | |
0b86a832 CM |
70 | /* |
71 | * chunk tree stores translations from logical -> physical block numbering | |
72 | * the super block points to the chunk tree | |
73 | */ | |
e085def2 | 74 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
75 | |
76 | /* | |
77 | * stores information about which areas of a given device are in use. | |
78 | * one per device. The tree of tree roots points to the device tree | |
79 | */ | |
e085def2 CM |
80 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
81 | ||
82 | /* one per subvolume, storing files and directories */ | |
83 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
84 | ||
85 | /* directory objectid inside the root tree */ | |
86 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 87 | |
d20f7043 CM |
88 | /* holds checksums of all the data extents */ |
89 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
90 | ||
0940ebf6 ID |
91 | /* for storing balance parameters in the root tree */ |
92 | #define BTRFS_BALANCE_OBJECTID -4ULL | |
93 | ||
630dc772 AJ |
94 | /* holds quota configuration and tracking */ |
95 | #define BTRFS_QUOTA_TREE_OBJECTID 8ULL | |
96 | ||
7b128766 JB |
97 | /* orhpan objectid for tracking unlinked/truncated files */ |
98 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
99 | ||
e02119d5 CM |
100 | /* does write ahead logging to speed up fsyncs */ |
101 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
102 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
103 | ||
e4657689 ZY |
104 | /* for space balancing */ |
105 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
106 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
107 | ||
d20f7043 CM |
108 | /* |
109 | * extent checksums all have this objectid | |
110 | * this allows them to share the logging tree | |
111 | * for fsyncs | |
112 | */ | |
113 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
114 | ||
0af3d00b JB |
115 | /* For storing free space cache */ |
116 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL | |
117 | ||
82d5902d LZ |
118 | /* |
119 | * The inode number assigned to the special inode for sotring | |
120 | * free ino cache | |
121 | */ | |
122 | #define BTRFS_FREE_INO_OBJECTID -12ULL | |
123 | ||
31840ae1 ZY |
124 | /* dummy objectid represents multiple objectids */ |
125 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
126 | ||
0b86a832 | 127 | /* |
6527cdbe | 128 | * All files have objectids in this range. |
0b86a832 | 129 | */ |
f6dbff55 | 130 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 131 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 132 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 133 | |
0b86a832 CM |
134 | |
135 | /* | |
136 | * the device items go into the chunk tree. The key is in the form | |
137 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
138 | */ | |
139 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
140 | ||
4df27c4d YZ |
141 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
142 | ||
143 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 | |
144 | ||
727011e0 CM |
145 | /* |
146 | * the max metadata block size. This limit is somewhat artificial, | |
147 | * but the memmove costs go through the roof for larger blocks. | |
148 | */ | |
149 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
150 | ||
e20d96d6 CM |
151 | /* |
152 | * we can actually store much bigger names, but lets not confuse the rest | |
153 | * of linux | |
154 | */ | |
155 | #define BTRFS_NAME_LEN 255 | |
156 | ||
f254e52c CM |
157 | /* 32 bytes in various csum fields */ |
158 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
159 | |
160 | /* csum types */ | |
161 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
162 | ||
163 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
164 | ||
509659cd | 165 | /* four bytes for CRC32 */ |
3954401f | 166 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 167 | |
fabb5681 CM |
168 | #define BTRFS_FT_UNKNOWN 0 |
169 | #define BTRFS_FT_REG_FILE 1 | |
170 | #define BTRFS_FT_DIR 2 | |
171 | #define BTRFS_FT_CHRDEV 3 | |
172 | #define BTRFS_FT_BLKDEV 4 | |
173 | #define BTRFS_FT_FIFO 5 | |
174 | #define BTRFS_FT_SOCK 6 | |
175 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
176 | #define BTRFS_FT_XATTR 8 |
177 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 178 | |
3d136a11 SB |
179 | /* ioprio of readahead is set to idle */ |
180 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
181 | ||
fec577fb | 182 | /* |
d4a78947 WF |
183 | * The key defines the order in the tree, and so it also defines (optimal) |
184 | * block layout. | |
185 | * | |
186 | * objectid corresponds to the inode number. | |
187 | * | |
188 | * type tells us things about the object, and is a kind of stream selector. | |
189 | * so for a given inode, keys with type of 1 might refer to the inode data, | |
190 | * type of 2 may point to file data in the btree and type == 3 may point to | |
191 | * extents. | |
fec577fb CM |
192 | * |
193 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
194 | * |
195 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
196 | * in cpu native order. Otherwise they are identical and their sizes | |
197 | * should be the same (ie both packed) | |
fec577fb | 198 | */ |
e2fa7227 CM |
199 | struct btrfs_disk_key { |
200 | __le64 objectid; | |
5f39d397 | 201 | u8 type; |
70b2befd | 202 | __le64 offset; |
e2fa7227 CM |
203 | } __attribute__ ((__packed__)); |
204 | ||
205 | struct btrfs_key { | |
eb60ceac | 206 | u64 objectid; |
5f39d397 | 207 | u8 type; |
70b2befd | 208 | u64 offset; |
eb60ceac CM |
209 | } __attribute__ ((__packed__)); |
210 | ||
0b86a832 CM |
211 | struct btrfs_mapping_tree { |
212 | struct extent_map_tree map_tree; | |
213 | }; | |
214 | ||
0b86a832 CM |
215 | struct btrfs_dev_item { |
216 | /* the internal btrfs device id */ | |
217 | __le64 devid; | |
218 | ||
219 | /* size of the device */ | |
220 | __le64 total_bytes; | |
221 | ||
222 | /* bytes used */ | |
223 | __le64 bytes_used; | |
224 | ||
225 | /* optimal io alignment for this device */ | |
226 | __le32 io_align; | |
227 | ||
228 | /* optimal io width for this device */ | |
229 | __le32 io_width; | |
230 | ||
231 | /* minimal io size for this device */ | |
232 | __le32 sector_size; | |
233 | ||
0b86a832 CM |
234 | /* type and info about this device */ |
235 | __le64 type; | |
236 | ||
2b82032c YZ |
237 | /* expected generation for this device */ |
238 | __le64 generation; | |
239 | ||
c3027eb5 CM |
240 | /* |
241 | * starting byte of this partition on the device, | |
d4a78947 | 242 | * to allow for stripe alignment in the future |
c3027eb5 CM |
243 | */ |
244 | __le64 start_offset; | |
245 | ||
e17cade2 CM |
246 | /* grouping information for allocation decisions */ |
247 | __le32 dev_group; | |
248 | ||
249 | /* seek speed 0-100 where 100 is fastest */ | |
250 | u8 seek_speed; | |
251 | ||
252 | /* bandwidth 0-100 where 100 is fastest */ | |
253 | u8 bandwidth; | |
254 | ||
0d81ba5d | 255 | /* btrfs generated uuid for this device */ |
e17cade2 | 256 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
257 | |
258 | /* uuid of FS who owns this device */ | |
259 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
260 | } __attribute__ ((__packed__)); |
261 | ||
262 | struct btrfs_stripe { | |
263 | __le64 devid; | |
264 | __le64 offset; | |
e17cade2 | 265 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
266 | } __attribute__ ((__packed__)); |
267 | ||
268 | struct btrfs_chunk { | |
e17cade2 CM |
269 | /* size of this chunk in bytes */ |
270 | __le64 length; | |
271 | ||
272 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 273 | __le64 owner; |
e17cade2 | 274 | |
0b86a832 CM |
275 | __le64 stripe_len; |
276 | __le64 type; | |
277 | ||
278 | /* optimal io alignment for this chunk */ | |
279 | __le32 io_align; | |
280 | ||
281 | /* optimal io width for this chunk */ | |
282 | __le32 io_width; | |
283 | ||
284 | /* minimal io size for this chunk */ | |
285 | __le32 sector_size; | |
286 | ||
287 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
288 | * item in the btree | |
289 | */ | |
290 | __le16 num_stripes; | |
321aecc6 CM |
291 | |
292 | /* sub stripes only matter for raid10 */ | |
293 | __le16 sub_stripes; | |
0b86a832 CM |
294 | struct btrfs_stripe stripe; |
295 | /* additional stripes go here */ | |
296 | } __attribute__ ((__packed__)); | |
297 | ||
0af3d00b JB |
298 | #define BTRFS_FREE_SPACE_EXTENT 1 |
299 | #define BTRFS_FREE_SPACE_BITMAP 2 | |
300 | ||
301 | struct btrfs_free_space_entry { | |
302 | __le64 offset; | |
303 | __le64 bytes; | |
304 | u8 type; | |
305 | } __attribute__ ((__packed__)); | |
306 | ||
307 | struct btrfs_free_space_header { | |
308 | struct btrfs_disk_key location; | |
309 | __le64 generation; | |
310 | __le64 num_entries; | |
311 | __le64 num_bitmaps; | |
312 | } __attribute__ ((__packed__)); | |
313 | ||
0b86a832 CM |
314 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
315 | { | |
316 | BUG_ON(num_stripes == 0); | |
317 | return sizeof(struct btrfs_chunk) + | |
318 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
319 | } | |
320 | ||
5d4f98a2 YZ |
321 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
322 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) | |
acce952b | 323 | |
324 | /* | |
325 | * File system states | |
326 | */ | |
327 | ||
328 | /* Errors detected */ | |
329 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) | |
330 | ||
5d4f98a2 YZ |
331 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
332 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) | |
333 | ||
334 | #define BTRFS_BACKREF_REV_MAX 256 | |
335 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
336 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
337 | BTRFS_BACKREF_REV_SHIFT) | |
338 | ||
339 | #define BTRFS_OLD_BACKREF_REV 0 | |
340 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 341 | |
fec577fb CM |
342 | /* |
343 | * every tree block (leaf or node) starts with this header. | |
344 | */ | |
bb492bb0 | 345 | struct btrfs_header { |
e17cade2 | 346 | /* these first four must match the super block */ |
f254e52c | 347 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 348 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 349 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 350 | __le64 flags; |
e17cade2 CM |
351 | |
352 | /* allowed to be different from the super from here on down */ | |
353 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 354 | __le64 generation; |
4d775673 | 355 | __le64 owner; |
5f39d397 | 356 | __le32 nritems; |
9a6f11ed | 357 | u8 level; |
eb60ceac CM |
358 | } __attribute__ ((__packed__)); |
359 | ||
5f39d397 | 360 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
361 | sizeof(struct btrfs_header)) / \ |
362 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 363 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 364 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
365 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
366 | sizeof(struct btrfs_item) - \ | |
367 | sizeof(struct btrfs_file_extent_item)) | |
f34f57a3 YZ |
368 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
369 | sizeof(struct btrfs_item) -\ | |
370 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 371 | |
0b86a832 CM |
372 | |
373 | /* | |
374 | * this is a very generous portion of the super block, giving us | |
375 | * room to translate 14 chunks with 3 stripes each. | |
376 | */ | |
377 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 378 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 379 | |
af31f5e5 CM |
380 | /* |
381 | * just in case we somehow lose the roots and are not able to mount, | |
382 | * we store an array of the roots from previous transactions | |
383 | * in the super. | |
384 | */ | |
385 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
386 | struct btrfs_root_backup { | |
387 | __le64 tree_root; | |
388 | __le64 tree_root_gen; | |
389 | ||
390 | __le64 chunk_root; | |
391 | __le64 chunk_root_gen; | |
392 | ||
393 | __le64 extent_root; | |
394 | __le64 extent_root_gen; | |
395 | ||
396 | __le64 fs_root; | |
397 | __le64 fs_root_gen; | |
398 | ||
399 | __le64 dev_root; | |
400 | __le64 dev_root_gen; | |
401 | ||
402 | __le64 csum_root; | |
403 | __le64 csum_root_gen; | |
404 | ||
405 | __le64 total_bytes; | |
406 | __le64 bytes_used; | |
407 | __le64 num_devices; | |
408 | /* future */ | |
409 | __le64 unsed_64[4]; | |
410 | ||
411 | u8 tree_root_level; | |
412 | u8 chunk_root_level; | |
413 | u8 extent_root_level; | |
414 | u8 fs_root_level; | |
415 | u8 dev_root_level; | |
416 | u8 csum_root_level; | |
417 | /* future and to align */ | |
418 | u8 unused_8[10]; | |
419 | } __attribute__ ((__packed__)); | |
420 | ||
fec577fb CM |
421 | /* |
422 | * the super block basically lists the main trees of the FS | |
423 | * it currently lacks any block count etc etc | |
424 | */ | |
234b63a0 | 425 | struct btrfs_super_block { |
f254e52c | 426 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 427 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 428 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 429 | __le64 bytenr; /* this block number */ |
63b10fc4 | 430 | __le64 flags; |
e17cade2 CM |
431 | |
432 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 433 | __le64 magic; |
3768f368 CM |
434 | __le64 generation; |
435 | __le64 root; | |
0b86a832 | 436 | __le64 chunk_root; |
e02119d5 | 437 | __le64 log_root; |
c3027eb5 CM |
438 | |
439 | /* this will help find the new super based on the log root */ | |
440 | __le64 log_root_transid; | |
db94535d CM |
441 | __le64 total_bytes; |
442 | __le64 bytes_used; | |
2e635a27 | 443 | __le64 root_dir_objectid; |
8a4b83cc | 444 | __le64 num_devices; |
5f39d397 CM |
445 | __le32 sectorsize; |
446 | __le32 nodesize; | |
447 | __le32 leafsize; | |
87ee04eb | 448 | __le32 stripesize; |
0b86a832 | 449 | __le32 sys_chunk_array_size; |
84234f3a | 450 | __le64 chunk_root_generation; |
f2b636e8 JB |
451 | __le64 compat_flags; |
452 | __le64 compat_ro_flags; | |
453 | __le64 incompat_flags; | |
607d432d | 454 | __le16 csum_type; |
db94535d | 455 | u8 root_level; |
0b86a832 | 456 | u8 chunk_root_level; |
e02119d5 | 457 | u8 log_root_level; |
0d81ba5d | 458 | struct btrfs_dev_item dev_item; |
c3027eb5 | 459 | |
7ae9c09d | 460 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 461 | |
0af3d00b JB |
462 | __le64 cache_generation; |
463 | ||
c3027eb5 | 464 | /* future expansion */ |
0af3d00b | 465 | __le64 reserved[31]; |
0b86a832 | 466 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 467 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
468 | } __attribute__ ((__packed__)); |
469 | ||
f2b636e8 JB |
470 | /* |
471 | * Compat flags that we support. If any incompat flags are set other than the | |
472 | * ones specified below then we will fail to mount | |
473 | */ | |
5d4f98a2 | 474 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
0af3d00b | 475 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
67377734 | 476 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
a6fa6fae | 477 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
727011e0 CM |
478 | /* |
479 | * some patches floated around with a second compression method | |
480 | * lets save that incompat here for when they do get in | |
481 | * Note we don't actually support it, we're just reserving the | |
482 | * number | |
483 | */ | |
484 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) | |
485 | ||
486 | /* | |
487 | * older kernels tried to do bigger metadata blocks, but the | |
488 | * code was pretty buggy. Lets not let them try anymore. | |
489 | */ | |
490 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) | |
5d4f98a2 YZ |
491 | |
492 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL | |
493 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL | |
0af3d00b JB |
494 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
495 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 496 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 497 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 498 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
a6fa6fae | 499 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO) |
f2b636e8 | 500 | |
fec577fb | 501 | /* |
62e2749e | 502 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
503 | * the item in the leaf (relative to the start of the data area) |
504 | */ | |
0783fcfc | 505 | struct btrfs_item { |
e2fa7227 | 506 | struct btrfs_disk_key key; |
123abc88 | 507 | __le32 offset; |
5f39d397 | 508 | __le32 size; |
eb60ceac CM |
509 | } __attribute__ ((__packed__)); |
510 | ||
fec577fb CM |
511 | /* |
512 | * leaves have an item area and a data area: | |
513 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
514 | * | |
515 | * The data is separate from the items to get the keys closer together | |
516 | * during searches. | |
517 | */ | |
234b63a0 | 518 | struct btrfs_leaf { |
bb492bb0 | 519 | struct btrfs_header header; |
123abc88 | 520 | struct btrfs_item items[]; |
eb60ceac CM |
521 | } __attribute__ ((__packed__)); |
522 | ||
fec577fb CM |
523 | /* |
524 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
525 | * other blocks | |
526 | */ | |
123abc88 CM |
527 | struct btrfs_key_ptr { |
528 | struct btrfs_disk_key key; | |
529 | __le64 blockptr; | |
74493f7a | 530 | __le64 generation; |
123abc88 CM |
531 | } __attribute__ ((__packed__)); |
532 | ||
234b63a0 | 533 | struct btrfs_node { |
bb492bb0 | 534 | struct btrfs_header header; |
123abc88 | 535 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
536 | } __attribute__ ((__packed__)); |
537 | ||
fec577fb | 538 | /* |
234b63a0 CM |
539 | * btrfs_paths remember the path taken from the root down to the leaf. |
540 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
541 | * to any other levels that are present. |
542 | * | |
543 | * The slots array records the index of the item or block pointer | |
544 | * used while walking the tree. | |
545 | */ | |
234b63a0 | 546 | struct btrfs_path { |
5f39d397 | 547 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 548 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
549 | /* if there is real range locking, this locks field will change */ |
550 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 551 | int reada; |
925baedd | 552 | /* keep some upper locks as we walk down */ |
6702ed49 | 553 | int lowest_level; |
459931ec CM |
554 | |
555 | /* | |
556 | * set by btrfs_split_item, tells search_slot to keep all locks | |
557 | * and to force calls to keep space in the nodes | |
558 | */ | |
b9473439 CM |
559 | unsigned int search_for_split:1; |
560 | unsigned int keep_locks:1; | |
561 | unsigned int skip_locking:1; | |
562 | unsigned int leave_spinning:1; | |
5d4f98a2 | 563 | unsigned int search_commit_root:1; |
eb60ceac | 564 | }; |
5de08d7d | 565 | |
62e2749e CM |
566 | /* |
567 | * items in the extent btree are used to record the objectid of the | |
568 | * owner of the block and the number of references | |
569 | */ | |
5d4f98a2 | 570 | |
62e2749e | 571 | struct btrfs_extent_item { |
5d4f98a2 YZ |
572 | __le64 refs; |
573 | __le64 generation; | |
574 | __le64 flags; | |
575 | } __attribute__ ((__packed__)); | |
576 | ||
577 | struct btrfs_extent_item_v0 { | |
62e2749e | 578 | __le32 refs; |
74493f7a CM |
579 | } __attribute__ ((__packed__)); |
580 | ||
5d4f98a2 YZ |
581 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
582 | sizeof(struct btrfs_item)) | |
583 | ||
584 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) | |
585 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) | |
586 | ||
587 | /* following flags only apply to tree blocks */ | |
588 | ||
589 | /* use full backrefs for extent pointers in the block */ | |
590 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) | |
591 | ||
a2de733c AJ |
592 | /* |
593 | * this flag is only used internally by scrub and may be changed at any time | |
594 | * it is only declared here to avoid collisions | |
595 | */ | |
596 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) | |
597 | ||
5d4f98a2 YZ |
598 | struct btrfs_tree_block_info { |
599 | struct btrfs_disk_key key; | |
600 | u8 level; | |
601 | } __attribute__ ((__packed__)); | |
602 | ||
603 | struct btrfs_extent_data_ref { | |
604 | __le64 root; | |
605 | __le64 objectid; | |
606 | __le64 offset; | |
607 | __le32 count; | |
608 | } __attribute__ ((__packed__)); | |
609 | ||
610 | struct btrfs_shared_data_ref { | |
611 | __le32 count; | |
612 | } __attribute__ ((__packed__)); | |
613 | ||
614 | struct btrfs_extent_inline_ref { | |
615 | u8 type; | |
1bec1aed | 616 | __le64 offset; |
5d4f98a2 YZ |
617 | } __attribute__ ((__packed__)); |
618 | ||
619 | /* old style backrefs item */ | |
620 | struct btrfs_extent_ref_v0 { | |
74493f7a CM |
621 | __le64 root; |
622 | __le64 generation; | |
623 | __le64 objectid; | |
5d4f98a2 | 624 | __le32 count; |
62e2749e CM |
625 | } __attribute__ ((__packed__)); |
626 | ||
5d4f98a2 | 627 | |
0b86a832 CM |
628 | /* dev extents record free space on individual devices. The owner |
629 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 630 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
631 | */ |
632 | struct btrfs_dev_extent { | |
e17cade2 CM |
633 | __le64 chunk_tree; |
634 | __le64 chunk_objectid; | |
635 | __le64 chunk_offset; | |
0b86a832 | 636 | __le64 length; |
e17cade2 | 637 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
638 | } __attribute__ ((__packed__)); |
639 | ||
3954401f | 640 | struct btrfs_inode_ref { |
aec7477b | 641 | __le64 index; |
3954401f CM |
642 | __le16 name_len; |
643 | /* name goes here */ | |
644 | } __attribute__ ((__packed__)); | |
645 | ||
0b86a832 | 646 | struct btrfs_timespec { |
f254e52c | 647 | __le64 sec; |
1e1d2701 CM |
648 | __le32 nsec; |
649 | } __attribute__ ((__packed__)); | |
650 | ||
95029d7d | 651 | enum btrfs_compression_type { |
261507a0 LZ |
652 | BTRFS_COMPRESS_NONE = 0, |
653 | BTRFS_COMPRESS_ZLIB = 1, | |
a6fa6fae LZ |
654 | BTRFS_COMPRESS_LZO = 2, |
655 | BTRFS_COMPRESS_TYPES = 2, | |
656 | BTRFS_COMPRESS_LAST = 3, | |
95029d7d | 657 | }; |
c8b97818 | 658 | |
1e1d2701 | 659 | struct btrfs_inode_item { |
e02119d5 | 660 | /* nfs style generation number */ |
1e1d2701 | 661 | __le64 generation; |
e02119d5 CM |
662 | /* transid that last touched this inode */ |
663 | __le64 transid; | |
1e1d2701 | 664 | __le64 size; |
a76a3cd4 | 665 | __le64 nbytes; |
31f3c99b | 666 | __le64 block_group; |
1e1d2701 CM |
667 | __le32 nlink; |
668 | __le32 uid; | |
669 | __le32 gid; | |
670 | __le32 mode; | |
0b86a832 | 671 | __le64 rdev; |
f2b636e8 | 672 | __le64 flags; |
c8b97818 | 673 | |
c3027eb5 CM |
674 | /* modification sequence number for NFS */ |
675 | __le64 sequence; | |
676 | ||
677 | /* | |
678 | * a little future expansion, for more than this we can | |
679 | * just grow the inode item and version it | |
680 | */ | |
681 | __le64 reserved[4]; | |
0b86a832 CM |
682 | struct btrfs_timespec atime; |
683 | struct btrfs_timespec ctime; | |
684 | struct btrfs_timespec mtime; | |
685 | struct btrfs_timespec otime; | |
1e1d2701 CM |
686 | } __attribute__ ((__packed__)); |
687 | ||
e02119d5 CM |
688 | struct btrfs_dir_log_item { |
689 | __le64 end; | |
690 | } __attribute__ ((__packed__)); | |
691 | ||
62e2749e | 692 | struct btrfs_dir_item { |
d6e4a428 | 693 | struct btrfs_disk_key location; |
e02119d5 | 694 | __le64 transid; |
5103e947 | 695 | __le16 data_len; |
a8a2ee0c | 696 | __le16 name_len; |
62e2749e CM |
697 | u8 type; |
698 | } __attribute__ ((__packed__)); | |
699 | ||
b83cc969 LZ |
700 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
701 | ||
62e2749e | 702 | struct btrfs_root_item { |
d6e4a428 | 703 | struct btrfs_inode_item inode; |
84234f3a | 704 | __le64 generation; |
d6e4a428 | 705 | __le64 root_dirid; |
db94535d CM |
706 | __le64 bytenr; |
707 | __le64 byte_limit; | |
708 | __le64 bytes_used; | |
80ff3856 | 709 | __le64 last_snapshot; |
f2b636e8 | 710 | __le64 flags; |
62e2749e | 711 | __le32 refs; |
5eda7b5e CM |
712 | struct btrfs_disk_key drop_progress; |
713 | u8 drop_level; | |
db94535d | 714 | u8 level; |
9f5fae2f | 715 | } __attribute__ ((__packed__)); |
62e2749e | 716 | |
0660b5af CM |
717 | /* |
718 | * this is used for both forward and backward root refs | |
719 | */ | |
720 | struct btrfs_root_ref { | |
721 | __le64 dirid; | |
722 | __le64 sequence; | |
723 | __le16 name_len; | |
724 | } __attribute__ ((__packed__)); | |
725 | ||
0940ebf6 ID |
726 | struct btrfs_disk_balance_args { |
727 | /* | |
728 | * profiles to operate on, single is denoted by | |
729 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
730 | */ | |
731 | __le64 profiles; | |
732 | ||
733 | /* usage filter */ | |
734 | __le64 usage; | |
735 | ||
736 | /* devid filter */ | |
737 | __le64 devid; | |
738 | ||
739 | /* devid subset filter [pstart..pend) */ | |
740 | __le64 pstart; | |
741 | __le64 pend; | |
742 | ||
743 | /* btrfs virtual address space subset filter [vstart..vend) */ | |
744 | __le64 vstart; | |
745 | __le64 vend; | |
746 | ||
747 | /* | |
748 | * profile to convert to, single is denoted by | |
749 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
750 | */ | |
751 | __le64 target; | |
752 | ||
753 | /* BTRFS_BALANCE_ARGS_* */ | |
754 | __le64 flags; | |
755 | ||
756 | __le64 unused[8]; | |
757 | } __attribute__ ((__packed__)); | |
758 | ||
759 | /* | |
760 | * store balance parameters to disk so that balance can be properly | |
761 | * resumed after crash or unmount | |
762 | */ | |
763 | struct btrfs_balance_item { | |
764 | /* BTRFS_BALANCE_* */ | |
765 | __le64 flags; | |
766 | ||
767 | struct btrfs_disk_balance_args data; | |
768 | struct btrfs_disk_balance_args meta; | |
769 | struct btrfs_disk_balance_args sys; | |
770 | ||
771 | __le64 unused[4]; | |
772 | } __attribute__ ((__packed__)); | |
773 | ||
d899e052 YZ |
774 | #define BTRFS_FILE_EXTENT_INLINE 0 |
775 | #define BTRFS_FILE_EXTENT_REG 1 | |
776 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 777 | |
9f5fae2f | 778 | struct btrfs_file_extent_item { |
c8b97818 CM |
779 | /* |
780 | * transaction id that created this extent | |
781 | */ | |
71951f35 | 782 | __le64 generation; |
c8b97818 CM |
783 | /* |
784 | * max number of bytes to hold this extent in ram | |
785 | * when we split a compressed extent we can't know how big | |
786 | * each of the resulting pieces will be. So, this is | |
787 | * an upper limit on the size of the extent in ram instead of | |
788 | * an exact limit. | |
789 | */ | |
790 | __le64 ram_bytes; | |
791 | ||
792 | /* | |
793 | * 32 bits for the various ways we might encode the data, | |
794 | * including compression and encryption. If any of these | |
795 | * are set to something a given disk format doesn't understand | |
796 | * it is treated like an incompat flag for reading and writing, | |
797 | * but not for stat. | |
798 | */ | |
799 | u8 compression; | |
800 | u8 encryption; | |
801 | __le16 other_encoding; /* spare for later use */ | |
802 | ||
803 | /* are we inline data or a real extent? */ | |
236454df | 804 | u8 type; |
c8b97818 | 805 | |
9f5fae2f CM |
806 | /* |
807 | * disk space consumed by the extent, checksum blocks are included | |
808 | * in these numbers | |
809 | */ | |
db94535d CM |
810 | __le64 disk_bytenr; |
811 | __le64 disk_num_bytes; | |
9f5fae2f | 812 | /* |
dee26a9f | 813 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
814 | * this extent record is for. This allows a file extent to point |
815 | * into the middle of an existing extent on disk, sharing it | |
816 | * between two snapshots (useful if some bytes in the middle of the | |
817 | * extent have changed | |
818 | */ | |
819 | __le64 offset; | |
820 | /* | |
c8b97818 CM |
821 | * the logical number of file blocks (no csums included). This |
822 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 823 | */ |
db94535d | 824 | __le64 num_bytes; |
c8b97818 | 825 | |
9f5fae2f CM |
826 | } __attribute__ ((__packed__)); |
827 | ||
f254e52c | 828 | struct btrfs_csum_item { |
509659cd | 829 | u8 csum; |
f254e52c CM |
830 | } __attribute__ ((__packed__)); |
831 | ||
733f4fbb SB |
832 | struct btrfs_dev_stats_item { |
833 | /* | |
834 | * grow this item struct at the end for future enhancements and keep | |
835 | * the existing values unchanged | |
836 | */ | |
837 | __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; | |
838 | } __attribute__ ((__packed__)); | |
839 | ||
0b86a832 | 840 | /* different types of block groups (and chunks) */ |
52ba6929 ID |
841 | #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) |
842 | #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) | |
843 | #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) | |
844 | #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) | |
845 | #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) | |
846 | #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) | |
847 | #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) | |
a46d11a8 | 848 | #define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE |
52ba6929 ID |
849 | #define BTRFS_NR_RAID_TYPES 5 |
850 | ||
851 | #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \ | |
852 | BTRFS_BLOCK_GROUP_SYSTEM | \ | |
853 | BTRFS_BLOCK_GROUP_METADATA) | |
854 | ||
855 | #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \ | |
856 | BTRFS_BLOCK_GROUP_RAID1 | \ | |
857 | BTRFS_BLOCK_GROUP_DUP | \ | |
858 | BTRFS_BLOCK_GROUP_RAID10) | |
a46d11a8 ID |
859 | /* |
860 | * We need a bit for restriper to be able to tell when chunks of type | |
861 | * SINGLE are available. This "extended" profile format is used in | |
862 | * fs_info->avail_*_alloc_bits (in-memory) and balance item fields | |
863 | * (on-disk). The corresponding on-disk bit in chunk.type is reserved | |
864 | * to avoid remappings between two formats in future. | |
865 | */ | |
866 | #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) | |
867 | ||
899c81ea ID |
868 | #define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | \ |
869 | BTRFS_AVAIL_ALLOC_BIT_SINGLE) | |
870 | ||
871 | static inline u64 chunk_to_extended(u64 flags) | |
872 | { | |
873 | if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0) | |
874 | flags |= BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
875 | ||
876 | return flags; | |
877 | } | |
878 | static inline u64 extended_to_chunk(u64 flags) | |
879 | { | |
880 | return flags & ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
881 | } | |
882 | ||
9078a3e1 CM |
883 | struct btrfs_block_group_item { |
884 | __le64 used; | |
0b86a832 CM |
885 | __le64 chunk_objectid; |
886 | __le64 flags; | |
9078a3e1 CM |
887 | } __attribute__ ((__packed__)); |
888 | ||
630dc772 AJ |
889 | /* |
890 | * is subvolume quota turned on? | |
891 | */ | |
892 | #define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) | |
893 | /* | |
894 | * SCANNING is set during the initialization phase | |
895 | */ | |
896 | #define BTRFS_QGROUP_STATUS_FLAG_SCANNING (1ULL << 1) | |
897 | /* | |
898 | * Some qgroup entries are known to be out of date, | |
899 | * either because the configuration has changed in a way that | |
900 | * makes a rescan necessary, or because the fs has been mounted | |
901 | * with a non-qgroup-aware version. | |
902 | * Turning qouta off and on again makes it inconsistent, too. | |
903 | */ | |
904 | #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) | |
905 | ||
906 | #define BTRFS_QGROUP_STATUS_VERSION 1 | |
907 | ||
908 | struct btrfs_qgroup_status_item { | |
909 | __le64 version; | |
910 | /* | |
911 | * the generation is updated during every commit. As older | |
912 | * versions of btrfs are not aware of qgroups, it will be | |
913 | * possible to detect inconsistencies by checking the | |
914 | * generation on mount time | |
915 | */ | |
916 | __le64 generation; | |
917 | ||
918 | /* flag definitions see above */ | |
919 | __le64 flags; | |
920 | ||
921 | /* | |
922 | * only used during scanning to record the progress | |
923 | * of the scan. It contains a logical address | |
924 | */ | |
925 | __le64 scan; | |
926 | } __attribute__ ((__packed__)); | |
927 | ||
928 | struct btrfs_qgroup_info_item { | |
929 | __le64 generation; | |
930 | __le64 rfer; | |
931 | __le64 rfer_cmpr; | |
932 | __le64 excl; | |
933 | __le64 excl_cmpr; | |
934 | } __attribute__ ((__packed__)); | |
935 | ||
936 | /* flags definition for qgroup limits */ | |
937 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) | |
938 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) | |
939 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) | |
940 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) | |
941 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) | |
942 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) | |
943 | ||
944 | struct btrfs_qgroup_limit_item { | |
945 | /* | |
946 | * only updated when any of the other values change | |
947 | */ | |
948 | __le64 flags; | |
949 | __le64 max_rfer; | |
950 | __le64 max_excl; | |
951 | __le64 rsv_rfer; | |
952 | __le64 rsv_excl; | |
953 | } __attribute__ ((__packed__)); | |
954 | ||
6324fbf3 CM |
955 | struct btrfs_space_info { |
956 | u64 flags; | |
6a63209f | 957 | |
89a55897 JB |
958 | u64 total_bytes; /* total bytes in the space, |
959 | this doesn't take mirrors into account */ | |
b742bb82 | 960 | u64 bytes_used; /* total bytes used, |
e9c54999 | 961 | this doesn't take mirrors into account */ |
6a63209f JB |
962 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
963 | transaction finishes */ | |
964 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
965 | current allocations */ | |
966 | u64 bytes_readonly; /* total bytes that are read only */ | |
8929ecfa | 967 | |
6a63209f | 968 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 969 | delalloc/allocations */ |
b742bb82 | 970 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
971 | u64 disk_total; /* total bytes on disk, takes mirrors into |
972 | account */ | |
6a63209f | 973 | |
36e39c40 CM |
974 | /* |
975 | * we bump reservation progress every time we decrement | |
976 | * bytes_reserved. This way people waiting for reservations | |
977 | * know something good has happened and they can check | |
978 | * for progress. The number here isn't to be trusted, it | |
979 | * just shows reclaim activity | |
980 | */ | |
981 | unsigned long reservation_progress; | |
982 | ||
4ea02885 | 983 | unsigned int full:1; /* indicates that we cannot allocate any more |
6a63209f | 984 | chunks for this space */ |
4ea02885 | 985 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ |
6d74119f | 986 | |
fdb5effd JB |
987 | unsigned int flush:1; /* set if we are trying to make space */ |
988 | ||
4ea02885 DS |
989 | unsigned int force_alloc; /* set if we need to force a chunk |
990 | alloc for this space */ | |
6a63209f | 991 | |
6324fbf3 | 992 | struct list_head list; |
0f9dd46c JB |
993 | |
994 | /* for block groups in our same type */ | |
b742bb82 | 995 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
0f9dd46c | 996 | spinlock_t lock; |
80eb234a | 997 | struct rw_semaphore groups_sem; |
fdb5effd | 998 | wait_queue_head_t wait; |
0f9dd46c JB |
999 | }; |
1000 | ||
f0486c68 YZ |
1001 | struct btrfs_block_rsv { |
1002 | u64 size; | |
1003 | u64 reserved; | |
f0486c68 | 1004 | struct btrfs_space_info *space_info; |
f0486c68 | 1005 | spinlock_t lock; |
c08782da | 1006 | unsigned int full; |
f0486c68 YZ |
1007 | }; |
1008 | ||
fa9c0d79 CM |
1009 | /* |
1010 | * free clusters are used to claim free space in relatively large chunks, | |
1011 | * allowing us to do less seeky writes. They are used for all metadata | |
1012 | * allocations and data allocations in ssd mode. | |
1013 | */ | |
1014 | struct btrfs_free_cluster { | |
1015 | spinlock_t lock; | |
1016 | spinlock_t refill_lock; | |
1017 | struct rb_root root; | |
1018 | ||
1019 | /* largest extent in this cluster */ | |
1020 | u64 max_size; | |
1021 | ||
1022 | /* first extent starting offset */ | |
1023 | u64 window_start; | |
1024 | ||
1025 | struct btrfs_block_group_cache *block_group; | |
1026 | /* | |
1027 | * when a cluster is allocated from a block group, we put the | |
1028 | * cluster onto a list in the block group so that it can | |
1029 | * be freed before the block group is freed. | |
1030 | */ | |
1031 | struct list_head block_group_list; | |
6324fbf3 CM |
1032 | }; |
1033 | ||
817d52f8 JB |
1034 | enum btrfs_caching_type { |
1035 | BTRFS_CACHE_NO = 0, | |
1036 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
1037 | BTRFS_CACHE_FAST = 2, |
1038 | BTRFS_CACHE_FINISHED = 3, | |
817d52f8 JB |
1039 | }; |
1040 | ||
0af3d00b JB |
1041 | enum btrfs_disk_cache_state { |
1042 | BTRFS_DC_WRITTEN = 0, | |
1043 | BTRFS_DC_ERROR = 1, | |
1044 | BTRFS_DC_CLEAR = 2, | |
1045 | BTRFS_DC_SETUP = 3, | |
1046 | BTRFS_DC_NEED_WRITE = 4, | |
1047 | }; | |
1048 | ||
11833d66 YZ |
1049 | struct btrfs_caching_control { |
1050 | struct list_head list; | |
1051 | struct mutex mutex; | |
1052 | wait_queue_head_t wait; | |
bab39bf9 | 1053 | struct btrfs_work work; |
11833d66 YZ |
1054 | struct btrfs_block_group_cache *block_group; |
1055 | u64 progress; | |
1056 | atomic_t count; | |
1057 | }; | |
1058 | ||
9078a3e1 CM |
1059 | struct btrfs_block_group_cache { |
1060 | struct btrfs_key key; | |
1061 | struct btrfs_block_group_item item; | |
817d52f8 | 1062 | struct btrfs_fs_info *fs_info; |
0af3d00b | 1063 | struct inode *inode; |
c286ac48 | 1064 | spinlock_t lock; |
324ae4df | 1065 | u64 pinned; |
e8569813 | 1066 | u64 reserved; |
1b2da372 | 1067 | u64 bytes_super; |
0b86a832 | 1068 | u64 flags; |
96303081 | 1069 | u64 sectorsize; |
5b0e95bf | 1070 | u64 cache_generation; |
0410c94a MK |
1071 | unsigned int ro:1; |
1072 | unsigned int dirty:1; | |
1073 | unsigned int iref:1; | |
0af3d00b JB |
1074 | |
1075 | int disk_cache_state; | |
0f9dd46c | 1076 | |
817d52f8 | 1077 | /* cache tracking stuff */ |
817d52f8 | 1078 | int cached; |
11833d66 YZ |
1079 | struct btrfs_caching_control *caching_ctl; |
1080 | u64 last_byte_to_unpin; | |
817d52f8 | 1081 | |
0f9dd46c JB |
1082 | struct btrfs_space_info *space_info; |
1083 | ||
1084 | /* free space cache stuff */ | |
34d52cb6 | 1085 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
1086 | |
1087 | /* block group cache stuff */ | |
1088 | struct rb_node cache_node; | |
1089 | ||
1090 | /* for block groups in the same raid type */ | |
1091 | struct list_head list; | |
d2fb3437 YZ |
1092 | |
1093 | /* usage count */ | |
1094 | atomic_t count; | |
fa9c0d79 CM |
1095 | |
1096 | /* List of struct btrfs_free_clusters for this block group. | |
1097 | * Today it will only have one thing on it, but that may change | |
1098 | */ | |
1099 | struct list_head cluster_list; | |
9078a3e1 | 1100 | }; |
0b86a832 | 1101 | |
097b8a7c JS |
1102 | /* delayed seq elem */ |
1103 | struct seq_list { | |
1104 | struct list_head list; | |
1105 | u64 seq; | |
1106 | }; | |
1107 | ||
1108 | /* fs_info */ | |
5d4f98a2 | 1109 | struct reloc_control; |
0b86a832 | 1110 | struct btrfs_device; |
8a4b83cc | 1111 | struct btrfs_fs_devices; |
c9e9f97b | 1112 | struct btrfs_balance_control; |
16cdcec7 | 1113 | struct btrfs_delayed_root; |
9f5fae2f | 1114 | struct btrfs_fs_info { |
5f39d397 | 1115 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 1116 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
1117 | struct btrfs_root *extent_root; |
1118 | struct btrfs_root *tree_root; | |
0b86a832 CM |
1119 | struct btrfs_root *chunk_root; |
1120 | struct btrfs_root *dev_root; | |
3de4586c | 1121 | struct btrfs_root *fs_root; |
d20f7043 | 1122 | struct btrfs_root *csum_root; |
416ac51d | 1123 | struct btrfs_root *quota_root; |
e02119d5 CM |
1124 | |
1125 | /* the log root tree is a directory of all the other log roots */ | |
1126 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
1127 | |
1128 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 1129 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 1130 | |
0f9dd46c JB |
1131 | /* block group cache stuff */ |
1132 | spinlock_t block_group_cache_lock; | |
1133 | struct rb_root block_group_cache_tree; | |
1134 | ||
2bf64758 JB |
1135 | /* keep track of unallocated space */ |
1136 | spinlock_t free_chunk_lock; | |
1137 | u64 free_chunk_space; | |
1138 | ||
11833d66 YZ |
1139 | struct extent_io_tree freed_extents[2]; |
1140 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 1141 | |
0b86a832 CM |
1142 | /* logical->physical extent mapping */ |
1143 | struct btrfs_mapping_tree mapping_tree; | |
1144 | ||
16cdcec7 MX |
1145 | /* |
1146 | * block reservation for extent, checksum, root tree and | |
1147 | * delayed dir index item | |
1148 | */ | |
f0486c68 YZ |
1149 | struct btrfs_block_rsv global_block_rsv; |
1150 | /* block reservation for delay allocation */ | |
1151 | struct btrfs_block_rsv delalloc_block_rsv; | |
1152 | /* block reservation for metadata operations */ | |
1153 | struct btrfs_block_rsv trans_block_rsv; | |
1154 | /* block reservation for chunk tree */ | |
1155 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
1156 | /* block reservation for delayed operations */ |
1157 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
1158 | |
1159 | struct btrfs_block_rsv empty_block_rsv; | |
1160 | ||
293ffd5f | 1161 | u64 generation; |
15ee9bc7 | 1162 | u64 last_trans_committed; |
12fcfd22 CM |
1163 | |
1164 | /* | |
1165 | * this is updated to the current trans every time a full commit | |
1166 | * is required instead of the faster short fsync log commits | |
1167 | */ | |
1168 | u64 last_trans_log_full_commit; | |
25cd999e | 1169 | unsigned long mount_opt; |
261507a0 | 1170 | unsigned long compress_type:4; |
6f568d35 | 1171 | u64 max_inline; |
8f662a76 | 1172 | u64 alloc_start; |
79154b1b | 1173 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 1174 | wait_queue_head_t transaction_throttle; |
f9295749 | 1175 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 1176 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 1177 | wait_queue_head_t async_submit_wait; |
e02119d5 | 1178 | |
6c41761f DS |
1179 | struct btrfs_super_block *super_copy; |
1180 | struct btrfs_super_block *super_for_commit; | |
0b86a832 | 1181 | struct block_device *__bdev; |
e20d96d6 | 1182 | struct super_block *sb; |
d98237b3 | 1183 | struct inode *btree_inode; |
04160088 | 1184 | struct backing_dev_info bdi; |
e02119d5 | 1185 | struct mutex tree_log_mutex; |
a74a4b97 CM |
1186 | struct mutex transaction_kthread_mutex; |
1187 | struct mutex cleaner_mutex; | |
925baedd | 1188 | struct mutex chunk_mutex; |
7d9eb12c | 1189 | struct mutex volume_mutex; |
5a3f23d5 CM |
1190 | /* |
1191 | * this protects the ordered operations list only while we are | |
1192 | * processing all of the entries on it. This way we make | |
1193 | * sure the commit code doesn't find the list temporarily empty | |
1194 | * because another function happens to be doing non-waiting preflush | |
1195 | * before jumping into the main commit. | |
1196 | */ | |
1197 | struct mutex ordered_operations_mutex; | |
11833d66 | 1198 | struct rw_semaphore extent_commit_sem; |
5a3f23d5 | 1199 | |
c71bf099 | 1200 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 1201 | |
c71bf099 | 1202 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
1203 | struct srcu_struct subvol_srcu; |
1204 | ||
a4abeea4 | 1205 | spinlock_t trans_lock; |
7585717f CM |
1206 | /* |
1207 | * the reloc mutex goes with the trans lock, it is taken | |
1208 | * during commit to protect us from the relocation code | |
1209 | */ | |
1210 | struct mutex reloc_mutex; | |
1211 | ||
8fd17795 | 1212 | struct list_head trans_list; |
19c00ddc | 1213 | struct list_head hashers; |
facda1e7 | 1214 | struct list_head dead_roots; |
11833d66 | 1215 | struct list_head caching_block_groups; |
e02119d5 | 1216 | |
24bbcf04 YZ |
1217 | spinlock_t delayed_iput_lock; |
1218 | struct list_head delayed_iputs; | |
1219 | ||
f29021b2 JS |
1220 | /* this protects tree_mod_seq_list */ |
1221 | spinlock_t tree_mod_seq_lock; | |
1222 | atomic_t tree_mod_seq; | |
1223 | struct list_head tree_mod_seq_list; | |
097b8a7c JS |
1224 | struct seq_list tree_mod_seq_elem; |
1225 | wait_queue_head_t tree_mod_seq_wait; | |
f29021b2 JS |
1226 | |
1227 | /* this protects tree_mod_log */ | |
1228 | rwlock_t tree_mod_log_lock; | |
1229 | struct rb_root tree_mod_log; | |
1230 | ||
cb03c743 | 1231 | atomic_t nr_async_submits; |
8c8bee1d | 1232 | atomic_t async_submit_draining; |
0986fe9e | 1233 | atomic_t nr_async_bios; |
771ed689 | 1234 | atomic_t async_delalloc_pages; |
a4abeea4 | 1235 | atomic_t open_ioctl_trans; |
ce9adaa5 | 1236 | |
3eaa2885 CM |
1237 | /* |
1238 | * this is used by the balancing code to wait for all the pending | |
1239 | * ordered extents | |
1240 | */ | |
1241 | spinlock_t ordered_extent_lock; | |
5a3f23d5 CM |
1242 | |
1243 | /* | |
1244 | * all of the data=ordered extents pending writeback | |
1245 | * these can span multiple transactions and basically include | |
1246 | * every dirty data page that isn't from nodatacow | |
1247 | */ | |
3eaa2885 | 1248 | struct list_head ordered_extents; |
5a3f23d5 CM |
1249 | |
1250 | /* | |
1251 | * all of the inodes that have delalloc bytes. It is possible for | |
1252 | * this list to be empty even when there is still dirty data=ordered | |
1253 | * extents waiting to finish IO. | |
1254 | */ | |
ea8c2819 | 1255 | struct list_head delalloc_inodes; |
3eaa2885 | 1256 | |
5a3f23d5 CM |
1257 | /* |
1258 | * special rename and truncate targets that must be on disk before | |
1259 | * we're allowed to commit. This is basically the ext3 style | |
1260 | * data=ordered list. | |
1261 | */ | |
1262 | struct list_head ordered_operations; | |
1263 | ||
8b712842 CM |
1264 | /* |
1265 | * there is a pool of worker threads for checksumming during writes | |
1266 | * and a pool for checksumming after reads. This is because readers | |
1267 | * can run with FS locks held, and the writers may be waiting for | |
1268 | * those locks. We don't want ordering in the pending list to cause | |
1269 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
1270 | * |
1271 | * A third pool does submit_bio to avoid deadlocking with the other | |
1272 | * two | |
8b712842 | 1273 | */ |
61d92c32 | 1274 | struct btrfs_workers generic_worker; |
8b712842 | 1275 | struct btrfs_workers workers; |
771ed689 | 1276 | struct btrfs_workers delalloc_workers; |
8b712842 | 1277 | struct btrfs_workers endio_workers; |
d20f7043 | 1278 | struct btrfs_workers endio_meta_workers; |
cad321ad | 1279 | struct btrfs_workers endio_meta_write_workers; |
e6dcd2dc | 1280 | struct btrfs_workers endio_write_workers; |
0cb59c99 | 1281 | struct btrfs_workers endio_freespace_worker; |
1cc127b5 | 1282 | struct btrfs_workers submit_workers; |
bab39bf9 | 1283 | struct btrfs_workers caching_workers; |
90519d66 | 1284 | struct btrfs_workers readahead_workers; |
bab39bf9 | 1285 | |
247e743c CM |
1286 | /* |
1287 | * fixup workers take dirty pages that didn't properly go through | |
1288 | * the cow mechanism and make them safe to write. It happens | |
1289 | * for the sys_munmap function call path | |
1290 | */ | |
1291 | struct btrfs_workers fixup_workers; | |
16cdcec7 | 1292 | struct btrfs_workers delayed_workers; |
a74a4b97 CM |
1293 | struct task_struct *transaction_kthread; |
1294 | struct task_struct *cleaner_kthread; | |
4543df7e | 1295 | int thread_pool_size; |
8b712842 | 1296 | |
58176a96 JB |
1297 | struct kobject super_kobj; |
1298 | struct completion kobj_unregister; | |
e66f709b | 1299 | int do_barriers; |
facda1e7 | 1300 | int closing; |
e02119d5 | 1301 | int log_root_recovering; |
a22285a6 | 1302 | int enospc_unlink; |
a4abeea4 | 1303 | int trans_no_join; |
9f5fae2f | 1304 | |
324ae4df | 1305 | u64 total_pinned; |
b9473439 CM |
1306 | |
1307 | /* protected by the delalloc lock, used to keep from writing | |
1308 | * metadata until there is a nice batch | |
1309 | */ | |
1310 | u64 dirty_metadata_bytes; | |
0b86a832 CM |
1311 | struct list_head dirty_cowonly_roots; |
1312 | ||
8a4b83cc | 1313 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1314 | |
1315 | /* | |
1316 | * the space_info list is almost entirely read only. It only changes | |
1317 | * when we add a new raid type to the FS, and that happens | |
1318 | * very rarely. RCU is used to protect it. | |
1319 | */ | |
6324fbf3 | 1320 | struct list_head space_info; |
4184ea7f | 1321 | |
5d4f98a2 YZ |
1322 | struct reloc_control *reloc_ctl; |
1323 | ||
1832a6d5 CM |
1324 | spinlock_t delalloc_lock; |
1325 | u64 delalloc_bytes; | |
fa9c0d79 CM |
1326 | |
1327 | /* data_alloc_cluster is only used in ssd mode */ | |
1328 | struct btrfs_free_cluster data_alloc_cluster; | |
1329 | ||
1330 | /* all metadata allocations go through this cluster */ | |
1331 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1332 | |
4cb5300b CM |
1333 | /* auto defrag inodes go here */ |
1334 | spinlock_t defrag_inodes_lock; | |
1335 | struct rb_root defrag_inodes; | |
1336 | atomic_t defrag_running; | |
1337 | ||
31153d81 YZ |
1338 | spinlock_t ref_cache_lock; |
1339 | u64 total_ref_cache_size; | |
31153d81 | 1340 | |
a46d11a8 ID |
1341 | /* |
1342 | * these three are in extended format (availability of single | |
1343 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
1344 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
1345 | */ | |
d18a2c44 CM |
1346 | u64 avail_data_alloc_bits; |
1347 | u64 avail_metadata_alloc_bits; | |
1348 | u64 avail_system_alloc_bits; | |
788f20eb | 1349 | |
c9e9f97b ID |
1350 | /* restriper state */ |
1351 | spinlock_t balance_lock; | |
1352 | struct mutex balance_mutex; | |
837d5b6e ID |
1353 | atomic_t balance_running; |
1354 | atomic_t balance_pause_req; | |
a7e99c69 | 1355 | atomic_t balance_cancel_req; |
c9e9f97b | 1356 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1357 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1358 | |
97e728d4 JB |
1359 | unsigned data_chunk_allocations; |
1360 | unsigned metadata_ratio; | |
1361 | ||
788f20eb | 1362 | void *bdev_holder; |
acce952b | 1363 | |
a2de733c AJ |
1364 | /* private scrub information */ |
1365 | struct mutex scrub_lock; | |
1366 | atomic_t scrubs_running; | |
1367 | atomic_t scrub_pause_req; | |
1368 | atomic_t scrubs_paused; | |
1369 | atomic_t scrub_cancel_req; | |
1370 | wait_queue_head_t scrub_pause_wait; | |
1371 | struct rw_semaphore scrub_super_lock; | |
1372 | int scrub_workers_refcnt; | |
1373 | struct btrfs_workers scrub_workers; | |
1374 | ||
21adbd5c SB |
1375 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1376 | u32 check_integrity_print_mask; | |
1377 | #endif | |
416ac51d AJ |
1378 | /* |
1379 | * quota information | |
1380 | */ | |
1381 | unsigned int quota_enabled:1; | |
1382 | ||
1383 | /* | |
1384 | * quota_enabled only changes state after a commit. This holds the | |
1385 | * next state. | |
1386 | */ | |
1387 | unsigned int pending_quota_state:1; | |
1388 | ||
1389 | /* is qgroup tracking in a consistent state? */ | |
1390 | u64 qgroup_flags; | |
1391 | ||
1392 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1393 | struct rb_root qgroup_tree; | |
1394 | spinlock_t qgroup_lock; | |
1395 | ||
1396 | /* list of dirty qgroups to be written at next commit */ | |
1397 | struct list_head dirty_qgroups; | |
1398 | ||
1399 | /* used by btrfs_qgroup_record_ref for an efficient tree traversal */ | |
1400 | u64 qgroup_seq; | |
21adbd5c | 1401 | |
acce952b | 1402 | /* filesystem state */ |
1403 | u64 fs_state; | |
16cdcec7 MX |
1404 | |
1405 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1406 | |
90519d66 AJ |
1407 | /* readahead tree */ |
1408 | spinlock_t reada_lock; | |
1409 | struct radix_tree_root reada_tree; | |
531f4b1a | 1410 | |
af31f5e5 CM |
1411 | /* next backup root to be overwritten */ |
1412 | int backup_root_index; | |
324ae4df | 1413 | }; |
0b86a832 | 1414 | |
9f5fae2f CM |
1415 | /* |
1416 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1417 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1418 | */ |
1419 | struct btrfs_root { | |
5f39d397 | 1420 | struct extent_buffer *node; |
925baedd | 1421 | |
5f39d397 | 1422 | struct extent_buffer *commit_root; |
e02119d5 | 1423 | struct btrfs_root *log_root; |
1a40e23b | 1424 | struct btrfs_root *reloc_root; |
31153d81 | 1425 | |
62e2749e CM |
1426 | struct btrfs_root_item root_item; |
1427 | struct btrfs_key root_key; | |
9f5fae2f | 1428 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1429 | struct extent_io_tree dirty_log_pages; |
1430 | ||
58176a96 JB |
1431 | struct kobject root_kobj; |
1432 | struct completion kobj_unregister; | |
a2135011 | 1433 | struct mutex objectid_mutex; |
7237f183 | 1434 | |
f0486c68 YZ |
1435 | spinlock_t accounting_lock; |
1436 | struct btrfs_block_rsv *block_rsv; | |
1437 | ||
581bb050 LZ |
1438 | /* free ino cache stuff */ |
1439 | struct mutex fs_commit_mutex; | |
1440 | struct btrfs_free_space_ctl *free_ino_ctl; | |
1441 | enum btrfs_caching_type cached; | |
1442 | spinlock_t cache_lock; | |
1443 | wait_queue_head_t cache_wait; | |
1444 | struct btrfs_free_space_ctl *free_ino_pinned; | |
1445 | u64 cache_progress; | |
82d5902d | 1446 | struct inode *cache_inode; |
581bb050 | 1447 | |
e02119d5 | 1448 | struct mutex log_mutex; |
7237f183 YZ |
1449 | wait_queue_head_t log_writer_wait; |
1450 | wait_queue_head_t log_commit_wait[2]; | |
1451 | atomic_t log_writers; | |
1452 | atomic_t log_commit[2]; | |
1453 | unsigned long log_transid; | |
257c62e1 | 1454 | unsigned long last_log_commit; |
7237f183 | 1455 | unsigned long log_batch; |
ff782e0a JB |
1456 | pid_t log_start_pid; |
1457 | bool log_multiple_pids; | |
ea8c2819 | 1458 | |
0f7d52f4 CM |
1459 | u64 objectid; |
1460 | u64 last_trans; | |
5f39d397 CM |
1461 | |
1462 | /* data allocations are done in sectorsize units */ | |
1463 | u32 sectorsize; | |
1464 | ||
1465 | /* node allocations are done in nodesize units */ | |
1466 | u32 nodesize; | |
1467 | ||
1468 | /* leaf allocations are done in leafsize units */ | |
1469 | u32 leafsize; | |
1470 | ||
87ee04eb CM |
1471 | u32 stripesize; |
1472 | ||
9f5fae2f | 1473 | u32 type; |
13a8a7c8 YZ |
1474 | |
1475 | u64 highest_objectid; | |
7585717f CM |
1476 | |
1477 | /* btrfs_record_root_in_trans is a multi-step process, | |
1478 | * and it can race with the balancing code. But the | |
1479 | * race is very small, and only the first time the root | |
1480 | * is added to each transaction. So in_trans_setup | |
1481 | * is used to tell us when more checks are required | |
1482 | */ | |
1483 | unsigned long in_trans_setup; | |
9f3a7427 | 1484 | int ref_cows; |
0b86a832 | 1485 | int track_dirty; |
4df27c4d YZ |
1486 | int in_radix; |
1487 | ||
3f157a2f | 1488 | u64 defrag_trans_start; |
6702ed49 | 1489 | struct btrfs_key defrag_progress; |
0ef3e66b | 1490 | struct btrfs_key defrag_max; |
6702ed49 | 1491 | int defrag_running; |
58176a96 | 1492 | char *name; |
0b86a832 CM |
1493 | |
1494 | /* the dirty list is only used by non-reference counted roots */ | |
1495 | struct list_head dirty_list; | |
7b128766 | 1496 | |
5d4f98a2 YZ |
1497 | struct list_head root_list; |
1498 | ||
d68fc57b | 1499 | spinlock_t orphan_lock; |
8a35d95f | 1500 | atomic_t orphan_inodes; |
d68fc57b YZ |
1501 | struct btrfs_block_rsv *orphan_block_rsv; |
1502 | int orphan_item_inserted; | |
1503 | int orphan_cleanup_state; | |
3394e160 | 1504 | |
5d4f98a2 YZ |
1505 | spinlock_t inode_lock; |
1506 | /* red-black tree that keeps track of in-memory inodes */ | |
1507 | struct rb_root inode_tree; | |
1508 | ||
16cdcec7 MX |
1509 | /* |
1510 | * radix tree that keeps track of delayed nodes of every inode, | |
1511 | * protected by inode_lock | |
1512 | */ | |
1513 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1514 | /* |
1515 | * right now this just gets used so that a root has its own devid | |
1516 | * for stat. It may be used for more later | |
1517 | */ | |
0ee5dc67 | 1518 | dev_t anon_dev; |
f1ebcc74 LB |
1519 | |
1520 | int force_cow; | |
62e2749e CM |
1521 | }; |
1522 | ||
4cb5300b CM |
1523 | struct btrfs_ioctl_defrag_range_args { |
1524 | /* start of the defrag operation */ | |
1525 | __u64 start; | |
1526 | ||
1527 | /* number of bytes to defrag, use (u64)-1 to say all */ | |
1528 | __u64 len; | |
1529 | ||
1530 | /* | |
1531 | * flags for the operation, which can include turning | |
1532 | * on compression for this one defrag | |
1533 | */ | |
1534 | __u64 flags; | |
1535 | ||
1536 | /* | |
1537 | * any extent bigger than this will be considered | |
1538 | * already defragged. Use 0 to take the kernel default | |
1539 | * Use 1 to say every single extent must be rewritten | |
1540 | */ | |
1541 | __u32 extent_thresh; | |
1542 | ||
1543 | /* | |
1544 | * which compression method to use if turning on compression | |
1545 | * for this defrag operation. If unspecified, zlib will | |
1546 | * be used | |
1547 | */ | |
1548 | __u32 compress_type; | |
1549 | ||
1550 | /* spare for later */ | |
1551 | __u32 unused[4]; | |
1552 | }; | |
1553 | ||
1554 | ||
1e1d2701 CM |
1555 | /* |
1556 | * inode items have the data typically returned from stat and store other | |
1557 | * info about object characteristics. There is one for every file and dir in | |
1558 | * the FS | |
1559 | */ | |
9078a3e1 | 1560 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af CM |
1561 | #define BTRFS_INODE_REF_KEY 12 |
1562 | #define BTRFS_XATTR_ITEM_KEY 24 | |
1563 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 1564 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
1565 | |
1566 | /* | |
1567 | * dir items are the name -> inode pointers in a directory. There is one | |
1568 | * for every name in a directory. | |
1569 | */ | |
0660b5af CM |
1570 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
1571 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
1572 | #define BTRFS_DIR_ITEM_KEY 84 | |
1573 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 1574 | /* |
9078a3e1 | 1575 | * extent data is for file data |
1e1d2701 | 1576 | */ |
0660b5af | 1577 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 1578 | |
f254e52c | 1579 | /* |
d20f7043 CM |
1580 | * extent csums are stored in a separate tree and hold csums for |
1581 | * an entire extent on disk. | |
f254e52c | 1582 | */ |
d20f7043 | 1583 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 1584 | |
1e1d2701 | 1585 | /* |
d4a78947 | 1586 | * root items point to tree roots. They are typically in the root |
1e1d2701 CM |
1587 | * tree used by the super block to find all the other trees |
1588 | */ | |
0660b5af CM |
1589 | #define BTRFS_ROOT_ITEM_KEY 132 |
1590 | ||
1591 | /* | |
1592 | * root backrefs tie subvols and snapshots to the directory entries that | |
1593 | * reference them | |
1594 | */ | |
1595 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1596 | ||
1597 | /* | |
1598 | * root refs make a fast index for listing all of the snapshots and | |
1599 | * subvolumes referenced by a given root. They point directly to the | |
1600 | * directory item in the root that references the subvol | |
1601 | */ | |
1602 | #define BTRFS_ROOT_REF_KEY 156 | |
1603 | ||
1e1d2701 CM |
1604 | /* |
1605 | * extent items are in the extent map tree. These record which blocks | |
1606 | * are used, and how many references there are to each block | |
1607 | */ | |
0660b5af | 1608 | #define BTRFS_EXTENT_ITEM_KEY 168 |
5d4f98a2 YZ |
1609 | |
1610 | #define BTRFS_TREE_BLOCK_REF_KEY 176 | |
1611 | ||
1612 | #define BTRFS_EXTENT_DATA_REF_KEY 178 | |
1613 | ||
1614 | #define BTRFS_EXTENT_REF_V0_KEY 180 | |
1615 | ||
1616 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 | |
1617 | ||
1618 | #define BTRFS_SHARED_DATA_REF_KEY 184 | |
9078a3e1 CM |
1619 | |
1620 | /* | |
1621 | * block groups give us hints into the extent allocation trees. Which | |
1622 | * blocks are free etc etc | |
1623 | */ | |
0660b5af | 1624 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 1625 | |
0660b5af CM |
1626 | #define BTRFS_DEV_EXTENT_KEY 204 |
1627 | #define BTRFS_DEV_ITEM_KEY 216 | |
1628 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 1629 | |
630dc772 AJ |
1630 | /* |
1631 | * Records the overall state of the qgroups. | |
1632 | * There's only one instance of this key present, | |
1633 | * (0, BTRFS_QGROUP_STATUS_KEY, 0) | |
1634 | */ | |
1635 | #define BTRFS_QGROUP_STATUS_KEY 240 | |
1636 | /* | |
1637 | * Records the currently used space of the qgroup. | |
1638 | * One key per qgroup, (0, BTRFS_QGROUP_INFO_KEY, qgroupid). | |
1639 | */ | |
1640 | #define BTRFS_QGROUP_INFO_KEY 242 | |
1641 | /* | |
1642 | * Contains the user configured limits for the qgroup. | |
1643 | * One key per qgroup, (0, BTRFS_QGROUP_LIMIT_KEY, qgroupid). | |
1644 | */ | |
1645 | #define BTRFS_QGROUP_LIMIT_KEY 244 | |
1646 | /* | |
1647 | * Records the child-parent relationship of qgroups. For | |
1648 | * each relation, 2 keys are present: | |
1649 | * (childid, BTRFS_QGROUP_RELATION_KEY, parentid) | |
1650 | * (parentid, BTRFS_QGROUP_RELATION_KEY, childid) | |
1651 | */ | |
1652 | #define BTRFS_QGROUP_RELATION_KEY 246 | |
1653 | ||
0940ebf6 ID |
1654 | #define BTRFS_BALANCE_ITEM_KEY 248 |
1655 | ||
733f4fbb SB |
1656 | /* |
1657 | * Persistantly stores the io stats in the device tree. | |
1658 | * One key for all stats, (0, BTRFS_DEV_STATS_KEY, devid). | |
1659 | */ | |
1660 | #define BTRFS_DEV_STATS_KEY 249 | |
1661 | ||
1e1d2701 CM |
1662 | /* |
1663 | * string items are for debugging. They just store a short string of | |
1664 | * data in the FS | |
1665 | */ | |
9078a3e1 CM |
1666 | #define BTRFS_STRING_ITEM_KEY 253 |
1667 | ||
0942caa3 DS |
1668 | /* |
1669 | * Flags for mount options. | |
1670 | * | |
1671 | * Note: don't forget to add new options to btrfs_show_options() | |
1672 | */ | |
21ad10cf CM |
1673 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1674 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1675 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1676 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1677 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1678 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1679 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1680 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1681 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1682 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1683 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1684 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1685 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1686 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1687 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1688 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1689 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1690 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
af31f5e5 | 1691 | #define BTRFS_MOUNT_RECOVERY (1 << 18) |
9555c6c1 | 1692 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1693 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1694 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1695 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
b6cda9bc CM |
1696 | |
1697 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) | |
1698 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
1699 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ | |
1700 | BTRFS_MOUNT_##opt) | |
b98b6767 Y |
1701 | /* |
1702 | * Inode flags | |
1703 | */ | |
fdebe2bd Y |
1704 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1705 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1706 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1707 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1708 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1709 | #define BTRFS_INODE_SYNC (1 << 5) |
1710 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1711 | #define BTRFS_INODE_APPEND (1 << 7) | |
1712 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1713 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1714 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1715 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1716 | |
08fe4db1 LZ |
1717 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1718 | ||
cfed81a0 CM |
1719 | struct btrfs_map_token { |
1720 | struct extent_buffer *eb; | |
1721 | char *kaddr; | |
1722 | unsigned long offset; | |
1723 | }; | |
1724 | ||
1725 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) | |
1726 | { | |
1727 | memset(token, 0, sizeof(*token)); | |
1728 | } | |
1729 | ||
5f39d397 CM |
1730 | /* some macros to generate set/get funcs for the struct fields. This |
1731 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
1732 | * one for u8: | |
1733 | */ | |
1734 | #define le8_to_cpu(v) (v) | |
1735 | #define cpu_to_le8(v) (v) | |
1736 | #define __le8 u8 | |
1737 | ||
1738 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1739 | read_extent_buffer(eb, (char *)(result), \ | |
1740 | ((unsigned long)(ptr)) + \ | |
1741 | offsetof(type, member), \ | |
1742 | sizeof(((type *)0)->member))) | |
1743 | ||
1744 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1745 | write_extent_buffer(eb, (char *)(result), \ | |
1746 | ((unsigned long)(ptr)) + \ | |
1747 | offsetof(type, member), \ | |
1748 | sizeof(((type *)0)->member))) | |
1749 | ||
0f82731f | 1750 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 1751 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f | 1752 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
cfed81a0 CM |
1753 | u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, struct btrfs_map_token *token); \ |
1754 | void btrfs_set_token_##name(struct extent_buffer *eb, type *s, u##bits val, struct btrfs_map_token *token);\ | |
0f82731f CM |
1755 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); |
1756 | #endif | |
5f39d397 CM |
1757 | |
1758 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1759 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1760 | { \ | |
727011e0 | 1761 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1762 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1763 | return res; \ |
5f39d397 CM |
1764 | } \ |
1765 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1766 | u##bits val) \ | |
1767 | { \ | |
727011e0 | 1768 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1769 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1770 | } |
9078a3e1 | 1771 | |
5f39d397 CM |
1772 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1773 | static inline u##bits btrfs_##name(type *s) \ | |
1774 | { \ | |
1775 | return le##bits##_to_cpu(s->member); \ | |
1776 | } \ | |
1777 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1778 | { \ | |
1779 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1780 | } |
1781 | ||
0b86a832 CM |
1782 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1783 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1784 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1785 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1786 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1787 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1788 | start_offset, 64); | |
0b86a832 CM |
1789 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1790 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1791 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1792 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1793 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1794 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1795 | |
8a4b83cc CM |
1796 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1797 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1798 | total_bytes, 64); | |
1799 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1800 | bytes_used, 64); | |
1801 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1802 | io_align, 32); | |
1803 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1804 | io_width, 32); | |
1805 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1806 | sector_size, 32); | |
1807 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1808 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1809 | dev_group, 32); | |
1810 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1811 | seek_speed, 8); | |
1812 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1813 | bandwidth, 8); | |
2b82032c YZ |
1814 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1815 | generation, 64); | |
8a4b83cc | 1816 | |
0b86a832 CM |
1817 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
1818 | { | |
1819 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
1820 | } | |
1821 | ||
2b82032c YZ |
1822 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
1823 | { | |
1824 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
1825 | } | |
1826 | ||
e17cade2 | 1827 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1828 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1829 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1830 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1831 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1832 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1833 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1834 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1835 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1836 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1837 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1838 | ||
e17cade2 CM |
1839 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1840 | { | |
1841 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1842 | } | |
1843 | ||
1844 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1845 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1846 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1847 | stripe_len, 64); | |
1848 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1849 | io_align, 32); | |
1850 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1851 | io_width, 32); | |
1852 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1853 | sector_size, 32); | |
1854 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1855 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1856 | num_stripes, 16); | |
321aecc6 CM |
1857 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1858 | sub_stripes, 16); | |
0b86a832 CM |
1859 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1860 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1861 | ||
1862 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1863 | int nr) | |
1864 | { | |
1865 | unsigned long offset = (unsigned long)c; | |
1866 | offset += offsetof(struct btrfs_chunk, stripe); | |
1867 | offset += nr * sizeof(struct btrfs_stripe); | |
1868 | return (struct btrfs_stripe *)offset; | |
1869 | } | |
1870 | ||
a443755f CM |
1871 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1872 | { | |
1873 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1874 | } | |
1875 | ||
0b86a832 CM |
1876 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1877 | struct btrfs_chunk *c, int nr) | |
1878 | { | |
1879 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1880 | } | |
1881 | ||
0b86a832 CM |
1882 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1883 | struct btrfs_chunk *c, int nr) | |
1884 | { | |
1885 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1886 | } | |
1887 | ||
5f39d397 CM |
1888 | /* struct btrfs_block_group_item */ |
1889 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1890 | used, 64); | |
1891 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1892 | used, 64); | |
0b86a832 CM |
1893 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1894 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1895 | |
1896 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1897 | struct btrfs_block_group_item, chunk_objectid, 64); |
1898 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1899 | struct btrfs_block_group_item, flags, 64); | |
1900 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1901 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1902 | |
3954401f CM |
1903 | /* struct btrfs_inode_ref */ |
1904 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1905 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1906 | |
5f39d397 CM |
1907 | /* struct btrfs_inode_item */ |
1908 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1909 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1910 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1911 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1912 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1913 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1914 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1915 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1916 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1917 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1918 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1919 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
1e1d2701 | 1920 | |
0b86a832 | 1921 | static inline struct btrfs_timespec * |
5f39d397 | 1922 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1923 | { |
5f39d397 CM |
1924 | unsigned long ptr = (unsigned long)inode_item; |
1925 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 1926 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1927 | } |
1928 | ||
0b86a832 | 1929 | static inline struct btrfs_timespec * |
5f39d397 | 1930 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1931 | { |
5f39d397 CM |
1932 | unsigned long ptr = (unsigned long)inode_item; |
1933 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 1934 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1935 | } |
1936 | ||
0b86a832 | 1937 | static inline struct btrfs_timespec * |
5f39d397 | 1938 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 1939 | { |
5f39d397 CM |
1940 | unsigned long ptr = (unsigned long)inode_item; |
1941 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 1942 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
1943 | } |
1944 | ||
0b86a832 CM |
1945 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1946 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1947 | |
0b86a832 | 1948 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1949 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1950 | chunk_tree, 64); | |
1951 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1952 | chunk_objectid, 64); | |
1953 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1954 | chunk_offset, 64); | |
0b86a832 CM |
1955 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1956 | ||
e17cade2 CM |
1957 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
1958 | { | |
1959 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
1960 | return (u8 *)((unsigned long)dev + ptr); | |
1961 | } | |
1962 | ||
5d4f98a2 YZ |
1963 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1964 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1965 | generation, 64); | |
1966 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1967 | |
5d4f98a2 YZ |
1968 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1969 | ||
1970 | ||
1971 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1972 | ||
1973 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1974 | struct btrfs_tree_block_info *item, | |
1975 | struct btrfs_disk_key *key) | |
1976 | { | |
1977 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1978 | } | |
1979 | ||
1980 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1981 | struct btrfs_tree_block_info *item, | |
1982 | struct btrfs_disk_key *key) | |
1983 | { | |
1984 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1985 | } | |
e20d96d6 | 1986 | |
5d4f98a2 YZ |
1987 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1988 | root, 64); | |
1989 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1990 | objectid, 64); | |
1991 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1992 | offset, 64); | |
1993 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1994 | count, 32); | |
1995 | ||
1996 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1997 | count, 32); | |
1998 | ||
1999 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
2000 | type, 8); | |
2001 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
2002 | offset, 64); | |
2003 | ||
2004 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
2005 | { | |
2006 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
2007 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
2008 | return sizeof(struct btrfs_extent_inline_ref); | |
2009 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
2010 | return sizeof(struct btrfs_shared_data_ref) + | |
2011 | sizeof(struct btrfs_extent_inline_ref); | |
2012 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
2013 | return sizeof(struct btrfs_extent_data_ref) + | |
2014 | offsetof(struct btrfs_extent_inline_ref, offset); | |
2015 | BUG(); | |
2016 | return 0; | |
2017 | } | |
2018 | ||
2019 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
2020 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
2021 | generation, 64); | |
2022 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
2023 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 2024 | |
5f39d397 CM |
2025 | /* struct btrfs_node */ |
2026 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 2027 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 2028 | |
5f39d397 | 2029 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 2030 | { |
5f39d397 CM |
2031 | unsigned long ptr; |
2032 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2033 | sizeof(struct btrfs_key_ptr) * nr; | |
2034 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
2035 | } |
2036 | ||
5f39d397 CM |
2037 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
2038 | int nr, u64 val) | |
cf27e1ee | 2039 | { |
5f39d397 CM |
2040 | unsigned long ptr; |
2041 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2042 | sizeof(struct btrfs_key_ptr) * nr; | |
2043 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
2044 | } |
2045 | ||
74493f7a CM |
2046 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
2047 | { | |
2048 | unsigned long ptr; | |
2049 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2050 | sizeof(struct btrfs_key_ptr) * nr; | |
2051 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
2052 | } | |
2053 | ||
2054 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
2055 | int nr, u64 val) | |
2056 | { | |
2057 | unsigned long ptr; | |
2058 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2059 | sizeof(struct btrfs_key_ptr) * nr; | |
2060 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
2061 | } | |
2062 | ||
810191ff | 2063 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 2064 | { |
5f39d397 CM |
2065 | return offsetof(struct btrfs_node, ptrs) + |
2066 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
2067 | } |
2068 | ||
e644d021 CM |
2069 | void btrfs_node_key(struct extent_buffer *eb, |
2070 | struct btrfs_disk_key *disk_key, int nr); | |
2071 | ||
5f39d397 CM |
2072 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
2073 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 2074 | { |
5f39d397 CM |
2075 | unsigned long ptr; |
2076 | ptr = btrfs_node_key_ptr_offset(nr); | |
2077 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
2078 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
2079 | } |
2080 | ||
5f39d397 CM |
2081 | /* struct btrfs_item */ |
2082 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
2083 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 2084 | |
5f39d397 | 2085 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 2086 | { |
5f39d397 CM |
2087 | return offsetof(struct btrfs_leaf, items) + |
2088 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
2089 | } |
2090 | ||
5f39d397 CM |
2091 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
2092 | int nr) | |
0783fcfc | 2093 | { |
5f39d397 | 2094 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
2095 | } |
2096 | ||
5f39d397 CM |
2097 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
2098 | struct btrfs_item *item) | |
0783fcfc | 2099 | { |
5f39d397 | 2100 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
2101 | } |
2102 | ||
5f39d397 | 2103 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2104 | { |
5f39d397 | 2105 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
2106 | } |
2107 | ||
5f39d397 | 2108 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2109 | { |
5f39d397 | 2110 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
2111 | } |
2112 | ||
5f39d397 | 2113 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2114 | { |
5f39d397 | 2115 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
2116 | } |
2117 | ||
5f39d397 CM |
2118 | static inline void btrfs_item_key(struct extent_buffer *eb, |
2119 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2120 | { |
5f39d397 CM |
2121 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
2122 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
2123 | } |
2124 | ||
5f39d397 CM |
2125 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
2126 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2127 | { |
5f39d397 CM |
2128 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
2129 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
2130 | } |
2131 | ||
e02119d5 CM |
2132 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
2133 | ||
0660b5af CM |
2134 | /* |
2135 | * struct btrfs_root_ref | |
2136 | */ | |
2137 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
2138 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
2139 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
2140 | ||
5f39d397 | 2141 | /* struct btrfs_dir_item */ |
5103e947 | 2142 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
2143 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
2144 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 2145 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
1d4f6404 | 2146 | |
5f39d397 CM |
2147 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
2148 | struct btrfs_dir_item *item, | |
2149 | struct btrfs_disk_key *key) | |
1d4f6404 | 2150 | { |
5f39d397 | 2151 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
2152 | } |
2153 | ||
5f39d397 CM |
2154 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
2155 | struct btrfs_dir_item *item, | |
2156 | struct btrfs_disk_key *key) | |
a8a2ee0c | 2157 | { |
5f39d397 | 2158 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
2159 | } |
2160 | ||
0af3d00b JB |
2161 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
2162 | num_entries, 64); | |
2163 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
2164 | num_bitmaps, 64); | |
2165 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
2166 | generation, 64); | |
2167 | ||
2168 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
2169 | struct btrfs_free_space_header *h, | |
2170 | struct btrfs_disk_key *key) | |
2171 | { | |
2172 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2173 | } | |
2174 | ||
2175 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
2176 | struct btrfs_free_space_header *h, | |
2177 | struct btrfs_disk_key *key) | |
2178 | { | |
2179 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2180 | } | |
2181 | ||
5f39d397 CM |
2182 | /* struct btrfs_disk_key */ |
2183 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2184 | objectid, 64); | |
2185 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2186 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2187 | |
e2fa7227 CM |
2188 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
2189 | struct btrfs_disk_key *disk) | |
2190 | { | |
2191 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2192 | cpu->type = disk->type; |
e2fa7227 CM |
2193 | cpu->objectid = le64_to_cpu(disk->objectid); |
2194 | } | |
2195 | ||
2196 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
2197 | struct btrfs_key *cpu) | |
2198 | { | |
2199 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2200 | disk->type = cpu->type; |
e2fa7227 CM |
2201 | disk->objectid = cpu_to_le64(cpu->objectid); |
2202 | } | |
2203 | ||
5f39d397 CM |
2204 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
2205 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2206 | { |
5f39d397 CM |
2207 | struct btrfs_disk_key disk_key; |
2208 | btrfs_node_key(eb, &disk_key, nr); | |
2209 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2210 | } |
2211 | ||
5f39d397 CM |
2212 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
2213 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2214 | { |
5f39d397 CM |
2215 | struct btrfs_disk_key disk_key; |
2216 | btrfs_item_key(eb, &disk_key, nr); | |
2217 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2218 | } |
2219 | ||
5f39d397 CM |
2220 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
2221 | struct btrfs_dir_item *item, | |
2222 | struct btrfs_key *key) | |
4d775673 | 2223 | { |
5f39d397 CM |
2224 | struct btrfs_disk_key disk_key; |
2225 | btrfs_dir_item_key(eb, item, &disk_key); | |
2226 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2227 | } |
2228 | ||
58176a96 | 2229 | |
5f39d397 | 2230 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 2231 | { |
5f39d397 | 2232 | return key->type; |
3768f368 CM |
2233 | } |
2234 | ||
5f39d397 | 2235 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2236 | { |
5f39d397 | 2237 | key->type = val; |
3768f368 CM |
2238 | } |
2239 | ||
5f39d397 | 2240 | /* struct btrfs_header */ |
db94535d | 2241 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2242 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2243 | generation, 64); | |
2244 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2245 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2246 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2247 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
0f7d52f4 | 2248 | |
63b10fc4 CM |
2249 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
2250 | { | |
2251 | return (btrfs_header_flags(eb) & flag) == flag; | |
2252 | } | |
2253 | ||
2254 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2255 | { | |
2256 | u64 flags = btrfs_header_flags(eb); | |
2257 | btrfs_set_header_flags(eb, flags | flag); | |
2258 | return (flags & flag) == flag; | |
2259 | } | |
2260 | ||
2261 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2262 | { | |
2263 | u64 flags = btrfs_header_flags(eb); | |
2264 | btrfs_set_header_flags(eb, flags & ~flag); | |
2265 | return (flags & flag) == flag; | |
2266 | } | |
2267 | ||
5d4f98a2 YZ |
2268 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2269 | { | |
2270 | u64 flags = btrfs_header_flags(eb); | |
2271 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2272 | } | |
2273 | ||
2274 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2275 | int rev) | |
2276 | { | |
2277 | u64 flags = btrfs_header_flags(eb); | |
2278 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2279 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2280 | btrfs_set_header_flags(eb, flags); | |
2281 | } | |
2282 | ||
5f39d397 | 2283 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 2284 | { |
5f39d397 CM |
2285 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
2286 | return (u8 *)ptr; | |
0f7d52f4 CM |
2287 | } |
2288 | ||
e17cade2 CM |
2289 | static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
2290 | { | |
2291 | unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); | |
2292 | return (u8 *)ptr; | |
2293 | } | |
2294 | ||
5f39d397 | 2295 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2296 | { |
d397712b | 2297 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2298 | } |
2299 | ||
5f39d397 | 2300 | /* struct btrfs_root_item */ |
84234f3a YZ |
2301 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2302 | generation, 64); | |
5f39d397 | 2303 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2304 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2305 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2306 | |
84234f3a YZ |
2307 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2308 | generation, 64); | |
db94535d CM |
2309 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2310 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2311 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2312 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2313 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2314 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2315 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2316 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2317 | last_snapshot, 64); | |
123abc88 | 2318 | |
b83cc969 LZ |
2319 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2320 | { | |
6ed3cf2c | 2321 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2322 | } |
2323 | ||
af31f5e5 CM |
2324 | /* struct btrfs_root_backup */ |
2325 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2326 | tree_root, 64); | |
2327 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2328 | tree_root_gen, 64); | |
2329 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2330 | tree_root_level, 8); | |
2331 | ||
2332 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2333 | chunk_root, 64); | |
2334 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2335 | chunk_root_gen, 64); | |
2336 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2337 | chunk_root_level, 8); | |
2338 | ||
2339 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2340 | extent_root, 64); | |
2341 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2342 | extent_root_gen, 64); | |
2343 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2344 | extent_root_level, 8); | |
2345 | ||
2346 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2347 | fs_root, 64); | |
2348 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2349 | fs_root_gen, 64); | |
2350 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2351 | fs_root_level, 8); | |
2352 | ||
2353 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2354 | dev_root, 64); | |
2355 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2356 | dev_root_gen, 64); | |
2357 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2358 | dev_root_level, 8); | |
2359 | ||
2360 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2361 | csum_root, 64); | |
2362 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2363 | csum_root_gen, 64); | |
2364 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2365 | csum_root_level, 8); | |
2366 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2367 | total_bytes, 64); | |
2368 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2369 | bytes_used, 64); | |
2370 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2371 | num_devices, 64); | |
2372 | ||
0940ebf6 ID |
2373 | /* struct btrfs_balance_item */ |
2374 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2375 | |
0940ebf6 ID |
2376 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2377 | struct btrfs_balance_item *bi, | |
2378 | struct btrfs_disk_balance_args *ba) | |
2379 | { | |
2380 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2381 | } | |
2382 | ||
2383 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2384 | struct btrfs_balance_item *bi, | |
2385 | struct btrfs_disk_balance_args *ba) | |
2386 | { | |
2387 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2388 | } | |
2389 | ||
2390 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2391 | struct btrfs_balance_item *bi, | |
2392 | struct btrfs_disk_balance_args *ba) | |
2393 | { | |
2394 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2395 | } | |
2396 | ||
2397 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2398 | struct btrfs_balance_item *bi, | |
2399 | struct btrfs_disk_balance_args *ba) | |
2400 | { | |
2401 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2402 | } | |
2403 | ||
2404 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2405 | struct btrfs_balance_item *bi, | |
2406 | struct btrfs_disk_balance_args *ba) | |
2407 | { | |
2408 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2409 | } | |
2410 | ||
2411 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2412 | struct btrfs_balance_item *bi, | |
2413 | struct btrfs_disk_balance_args *ba) | |
2414 | { | |
2415 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2416 | } | |
2417 | ||
2418 | static inline void | |
2419 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2420 | struct btrfs_disk_balance_args *disk) | |
2421 | { | |
2422 | memset(cpu, 0, sizeof(*cpu)); | |
2423 | ||
2424 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2425 | cpu->usage = le64_to_cpu(disk->usage); | |
2426 | cpu->devid = le64_to_cpu(disk->devid); | |
2427 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2428 | cpu->pend = le64_to_cpu(disk->pend); | |
2429 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2430 | cpu->vend = le64_to_cpu(disk->vend); | |
2431 | cpu->target = le64_to_cpu(disk->target); | |
2432 | cpu->flags = le64_to_cpu(disk->flags); | |
2433 | } | |
2434 | ||
2435 | static inline void | |
2436 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2437 | struct btrfs_balance_args *cpu) | |
2438 | { | |
2439 | memset(disk, 0, sizeof(*disk)); | |
2440 | ||
2441 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2442 | disk->usage = cpu_to_le64(cpu->usage); | |
2443 | disk->devid = cpu_to_le64(cpu->devid); | |
2444 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2445 | disk->pend = cpu_to_le64(cpu->pend); | |
2446 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2447 | disk->vend = cpu_to_le64(cpu->vend); | |
2448 | disk->target = cpu_to_le64(cpu->target); | |
2449 | disk->flags = cpu_to_le64(cpu->flags); | |
2450 | } | |
2451 | ||
2452 | /* struct btrfs_super_block */ | |
db94535d | 2453 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2454 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2455 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2456 | generation, 64); | |
2457 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2458 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2459 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2460 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2461 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2462 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2463 | root_level, 8); | |
0b86a832 CM |
2464 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2465 | chunk_root, 64); | |
2466 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2467 | chunk_root_level, 8); |
2468 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2469 | log_root, 64); | |
c3027eb5 CM |
2470 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2471 | log_root_transid, 64); | |
e02119d5 CM |
2472 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2473 | log_root_level, 8); | |
db94535d CM |
2474 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2475 | total_bytes, 64); | |
2476 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2477 | bytes_used, 64); | |
5f39d397 CM |
2478 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2479 | sectorsize, 32); | |
2480 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2481 | nodesize, 32); | |
2482 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
2483 | leafsize, 32); | |
87ee04eb CM |
2484 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2485 | stripesize, 32); | |
5f39d397 CM |
2486 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2487 | root_dir_objectid, 64); | |
8a4b83cc CM |
2488 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2489 | num_devices, 64); | |
f2b636e8 JB |
2490 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2491 | compat_flags, 64); | |
2492 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2493 | compat_ro_flags, 64); |
f2b636e8 JB |
2494 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2495 | incompat_flags, 64); | |
607d432d JB |
2496 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2497 | csum_type, 16); | |
0af3d00b JB |
2498 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2499 | cache_generation, 64); | |
607d432d JB |
2500 | |
2501 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2502 | { | |
2503 | int t = btrfs_super_csum_type(s); | |
2504 | BUG_ON(t >= ARRAY_SIZE(btrfs_csum_sizes)); | |
2505 | return btrfs_csum_sizes[t]; | |
2506 | } | |
2e635a27 | 2507 | |
5f39d397 | 2508 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2509 | { |
5f39d397 | 2510 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2511 | } |
2512 | ||
5f39d397 CM |
2513 | /* struct btrfs_file_extent_item */ |
2514 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 2515 | |
d397712b CM |
2516 | static inline unsigned long |
2517 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2518 | { |
5f39d397 | 2519 | unsigned long offset = (unsigned long)e; |
db94535d | 2520 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 2521 | return offset; |
236454df CM |
2522 | } |
2523 | ||
2524 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2525 | { | |
db94535d | 2526 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
2527 | } |
2528 | ||
db94535d CM |
2529 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2530 | disk_bytenr, 64); | |
5f39d397 CM |
2531 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2532 | generation, 64); | |
db94535d CM |
2533 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2534 | disk_num_bytes, 64); | |
5f39d397 CM |
2535 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2536 | offset, 64); | |
db94535d CM |
2537 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2538 | num_bytes, 64); | |
c8b97818 CM |
2539 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2540 | ram_bytes, 64); | |
2541 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2542 | compression, 8); | |
2543 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2544 | encryption, 8); | |
2545 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2546 | other_encoding, 16); | |
2547 | ||
2548 | /* this returns the number of file bytes represented by the inline item. | |
2549 | * If an item is compressed, this is the uncompressed size | |
2550 | */ | |
2551 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2552 | struct btrfs_file_extent_item *e) | |
2553 | { | |
2554 | return btrfs_file_extent_ram_bytes(eb, e); | |
2555 | } | |
2556 | ||
2557 | /* | |
2558 | * this returns the number of bytes used by the item on disk, minus the | |
2559 | * size of any extent headers. If a file is compressed on disk, this is | |
2560 | * the compressed size | |
2561 | */ | |
2562 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2563 | struct btrfs_item *e) | |
2564 | { | |
2565 | unsigned long offset; | |
2566 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
2567 | return btrfs_item_size(eb, e) - offset; | |
2568 | } | |
9f5fae2f | 2569 | |
733f4fbb SB |
2570 | /* btrfs_dev_stats_item */ |
2571 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
2572 | struct btrfs_dev_stats_item *ptr, | |
2573 | int index) | |
2574 | { | |
2575 | u64 val; | |
2576 | ||
2577 | read_extent_buffer(eb, &val, | |
2578 | offsetof(struct btrfs_dev_stats_item, values) + | |
2579 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2580 | sizeof(val)); | |
2581 | return val; | |
2582 | } | |
2583 | ||
2584 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2585 | struct btrfs_dev_stats_item *ptr, | |
2586 | int index, u64 val) | |
2587 | { | |
2588 | write_extent_buffer(eb, &val, | |
2589 | offsetof(struct btrfs_dev_stats_item, values) + | |
2590 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2591 | sizeof(val)); | |
2592 | } | |
2593 | ||
630dc772 AJ |
2594 | /* btrfs_qgroup_status_item */ |
2595 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2596 | generation, 64); | |
2597 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2598 | version, 64); | |
2599 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2600 | flags, 64); | |
2601 | BTRFS_SETGET_FUNCS(qgroup_status_scan, struct btrfs_qgroup_status_item, | |
2602 | scan, 64); | |
2603 | ||
2604 | /* btrfs_qgroup_info_item */ | |
2605 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2606 | generation, 64); | |
2607 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2608 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2609 | rfer_cmpr, 64); | |
2610 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2611 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2612 | excl_cmpr, 64); | |
2613 | ||
2614 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2615 | struct btrfs_qgroup_info_item, generation, 64); | |
2616 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2617 | rfer, 64); | |
2618 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2619 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2620 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2621 | excl, 64); | |
2622 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2623 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2624 | ||
2625 | /* btrfs_qgroup_limit_item */ | |
2626 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2627 | flags, 64); | |
2628 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2629 | max_rfer, 64); | |
2630 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2631 | max_excl, 64); | |
2632 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2633 | rsv_rfer, 64); | |
2634 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2635 | rsv_excl, 64); | |
2636 | ||
815745cf | 2637 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
e20d96d6 CM |
2638 | { |
2639 | return sb->s_fs_info; | |
2640 | } | |
2641 | ||
d397712b CM |
2642 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
2643 | { | |
db94535d CM |
2644 | if (level == 0) |
2645 | return root->leafsize; | |
2646 | return root->nodesize; | |
2647 | } | |
2648 | ||
4beb1b8b CM |
2649 | /* helper function to cast into the data area of the leaf. */ |
2650 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2651 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2652 | btrfs_item_offset_nr(leaf, slot))) |
2653 | ||
2654 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2655 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2656 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2657 | |
2b1f55b0 CM |
2658 | static inline struct dentry *fdentry(struct file *file) |
2659 | { | |
6da6abae | 2660 | return file->f_path.dentry; |
6da6abae CM |
2661 | } |
2662 | ||
67377734 JB |
2663 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2664 | { | |
2665 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2666 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2667 | } | |
2668 | ||
3b16a4e3 JB |
2669 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2670 | { | |
2671 | return mapping_gfp_mask(mapping) & ~__GFP_FS; | |
2672 | } | |
2673 | ||
b18c6685 | 2674 | /* extent-tree.c */ |
16cdcec7 | 2675 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 2676 | unsigned num_items) |
16cdcec7 MX |
2677 | { |
2678 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
2679 | 3 * num_items; | |
07127184 JB |
2680 | } |
2681 | ||
2682 | /* | |
2683 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2684 | * COW. | |
2685 | */ | |
2686 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, | |
2687 | unsigned num_items) | |
2688 | { | |
2689 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
2690 | num_items; | |
16cdcec7 MX |
2691 | } |
2692 | ||
fa9c0d79 | 2693 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
2694 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2695 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 2696 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
2697 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2698 | struct btrfs_root *root, u64 bytenr, | |
2699 | u64 num_bytes, u64 *refs, u64 *flags); | |
11833d66 YZ |
2700 | int btrfs_pin_extent(struct btrfs_root *root, |
2701 | u64 bytenr, u64 num, int reserved); | |
e688b725 CM |
2702 | int btrfs_pin_extent_for_log_replay(struct btrfs_trans_handle *trans, |
2703 | struct btrfs_root *root, | |
2704 | u64 bytenr, u64 num_bytes); | |
80ff3856 | 2705 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2706 | struct btrfs_root *root, |
2707 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
2708 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2709 | struct btrfs_fs_info *info, | |
2710 | u64 bytenr); | |
5d4f98a2 | 2711 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
d2fb3437 YZ |
2712 | u64 btrfs_find_block_group(struct btrfs_root *root, |
2713 | u64 search_start, u64 search_hint, int owner); | |
5f39d397 | 2714 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2715 | struct btrfs_root *root, u32 blocksize, |
2716 | u64 parent, u64 root_objectid, | |
2717 | struct btrfs_disk_key *key, int level, | |
5581a51a | 2718 | u64 hint, u64 empty_size); |
f0486c68 YZ |
2719 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2720 | struct btrfs_root *root, | |
2721 | struct extent_buffer *buf, | |
5581a51a | 2722 | u64 parent, int last_ref); |
65b51a00 CM |
2723 | struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans, |
2724 | struct btrfs_root *root, | |
4008c04a CM |
2725 | u64 bytenr, u32 blocksize, |
2726 | int level); | |
5d4f98a2 YZ |
2727 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
2728 | struct btrfs_root *root, | |
2729 | u64 root_objectid, u64 owner, | |
2730 | u64 offset, struct btrfs_key *ins); | |
2731 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, | |
2732 | struct btrfs_root *root, | |
2733 | u64 root_objectid, u64 owner, u64 offset, | |
2734 | struct btrfs_key *ins); | |
e6dcd2dc CM |
2735 | int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |
2736 | struct btrfs_root *root, | |
2737 | u64 num_bytes, u64 min_alloc_size, | |
2738 | u64 empty_size, u64 hint_byte, | |
81c9ad23 | 2739 | struct btrfs_key *ins, u64 data); |
e089f05c | 2740 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 2741 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 | 2742 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 2743 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 YZ |
2744 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2745 | struct btrfs_root *root, | |
2746 | u64 bytenr, u64 num_bytes, u64 flags, | |
2747 | int is_data); | |
31840ae1 ZY |
2748 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2749 | struct btrfs_root *root, | |
66d7e7f0 AJ |
2750 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
2751 | u64 owner, u64 offset, int for_cow); | |
5d4f98a2 | 2752 | |
65b51a00 | 2753 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
e688b725 CM |
2754 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
2755 | u64 start, u64 len); | |
143bede5 JM |
2756 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
2757 | struct btrfs_root *root); | |
ccd467d6 | 2758 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 2759 | struct btrfs_root *root); |
b18c6685 | 2760 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
2761 | struct btrfs_root *root, |
2762 | u64 bytenr, u64 num_bytes, u64 parent, | |
66d7e7f0 | 2763 | u64 root_objectid, u64 owner, u64 offset, int for_cow); |
5d4f98a2 | 2764 | |
9078a3e1 CM |
2765 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2766 | struct btrfs_root *root); | |
d2fb3437 | 2767 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
2768 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
2769 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 2770 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
2771 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2772 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 2773 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2774 | u64 size); |
1a40e23b ZY |
2775 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
2776 | struct btrfs_root *root, u64 group_start); | |
2b82032c | 2777 | u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags); |
6d07bcec | 2778 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
6a63209f | 2779 | void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde); |
4184ea7f | 2780 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
0ca1f7ce YZ |
2781 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
2782 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); | |
a22285a6 YZ |
2783 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2784 | struct btrfs_root *root); | |
d68fc57b YZ |
2785 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
2786 | struct inode *inode); | |
2787 | void btrfs_orphan_release_metadata(struct inode *inode); | |
a22285a6 YZ |
2788 | int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans, |
2789 | struct btrfs_pending_snapshot *pending); | |
0ca1f7ce YZ |
2790 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
2791 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
2792 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); | |
2793 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); | |
f0486c68 YZ |
2794 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv); |
2795 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root); | |
2796 | void btrfs_free_block_rsv(struct btrfs_root *root, | |
2797 | struct btrfs_block_rsv *rsv); | |
4a92b1b8 | 2798 | int btrfs_block_rsv_add(struct btrfs_root *root, |
f0486c68 | 2799 | struct btrfs_block_rsv *block_rsv, |
8bb8ab2e | 2800 | u64 num_bytes); |
c06a0e12 JB |
2801 | int btrfs_block_rsv_add_noflush(struct btrfs_root *root, |
2802 | struct btrfs_block_rsv *block_rsv, | |
2803 | u64 num_bytes); | |
4a92b1b8 | 2804 | int btrfs_block_rsv_check(struct btrfs_root *root, |
36ba022a JB |
2805 | struct btrfs_block_rsv *block_rsv, int min_factor); |
2806 | int btrfs_block_rsv_refill(struct btrfs_root *root, | |
f0486c68 | 2807 | struct btrfs_block_rsv *block_rsv, |
36ba022a | 2808 | u64 min_reserved); |
aa38a711 MX |
2809 | int btrfs_block_rsv_refill_noflush(struct btrfs_root *root, |
2810 | struct btrfs_block_rsv *block_rsv, | |
2811 | u64 min_reserved); | |
f0486c68 YZ |
2812 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
2813 | struct btrfs_block_rsv *dst_rsv, | |
2814 | u64 num_bytes); | |
2815 | void btrfs_block_rsv_release(struct btrfs_root *root, | |
2816 | struct btrfs_block_rsv *block_rsv, | |
2817 | u64 num_bytes); | |
2818 | int btrfs_set_block_group_ro(struct btrfs_root *root, | |
2819 | struct btrfs_block_group_cache *cache); | |
143bede5 JM |
2820 | void btrfs_set_block_group_rw(struct btrfs_root *root, |
2821 | struct btrfs_block_group_cache *cache); | |
0af3d00b | 2822 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2823 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 2824 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
2825 | u64 start, u64 end); | |
2826 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, | |
5378e607 | 2827 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca CM |
2828 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2829 | struct btrfs_root *root, u64 type); | |
f7039b1d | 2830 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 2831 | |
c59021f8 | 2832 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
dee26a9f | 2833 | /* ctree.c */ |
5d4f98a2 YZ |
2834 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
2835 | int level, int *slot); | |
2836 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
2837 | int btrfs_previous_item(struct btrfs_root *root, |
2838 | struct btrfs_path *path, u64 min_objectid, | |
2839 | int type); | |
143bede5 JM |
2840 | void btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, |
2841 | struct btrfs_root *root, struct btrfs_path *path, | |
2842 | struct btrfs_key *new_key); | |
925baedd CM |
2843 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2844 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2845 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f CM |
2846 | struct btrfs_key *key, int lowest_level, |
2847 | int cache_only, u64 min_trans); | |
2848 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, | |
e02119d5 | 2849 | struct btrfs_key *max_key, |
3f157a2f CM |
2850 | struct btrfs_path *path, int cache_only, |
2851 | u64 min_trans); | |
5f39d397 CM |
2852 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2853 | struct btrfs_root *root, struct extent_buffer *buf, | |
2854 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2855 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2856 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2857 | struct btrfs_root *root, | |
2858 | struct extent_buffer *buf, | |
2859 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2860 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2861 | struct extent_buffer *buf); | |
143bede5 JM |
2862 | void btrfs_extend_item(struct btrfs_trans_handle *trans, |
2863 | struct btrfs_root *root, struct btrfs_path *path, | |
2864 | u32 data_size); | |
2865 | void btrfs_truncate_item(struct btrfs_trans_handle *trans, | |
2866 | struct btrfs_root *root, | |
2867 | struct btrfs_path *path, | |
2868 | u32 new_size, int from_end); | |
459931ec CM |
2869 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2870 | struct btrfs_root *root, | |
2871 | struct btrfs_path *path, | |
2872 | struct btrfs_key *new_key, | |
2873 | unsigned long split_offset); | |
ad48fd75 YZ |
2874 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2875 | struct btrfs_root *root, | |
2876 | struct btrfs_path *path, | |
2877 | struct btrfs_key *new_key); | |
e089f05c CM |
2878 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
2879 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
2880 | ins_len, int cow); | |
5d9e75c4 JS |
2881 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
2882 | struct btrfs_path *p, u64 time_seq); | |
2f38b3e1 AJ |
2883 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
2884 | struct btrfs_key *key, struct btrfs_path *p, | |
2885 | int find_higher, int return_any); | |
6702ed49 | 2886 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2887 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
2888 | int start_slot, int cache_only, u64 *last_ret, |
2889 | struct btrfs_key *progress); | |
b3b4aa74 | 2890 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2891 | struct btrfs_path *btrfs_alloc_path(void); |
2892 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2893 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 2894 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 2895 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
2896 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2897 | ||
85e21bac CM |
2898 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2899 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2900 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2901 | struct btrfs_root *root, | |
2902 | struct btrfs_path *path) | |
2903 | { | |
2904 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2905 | } | |
2906 | ||
143bede5 JM |
2907 | void setup_items_for_insert(struct btrfs_trans_handle *trans, |
2908 | struct btrfs_root *root, struct btrfs_path *path, | |
2909 | struct btrfs_key *cpu_key, u32 *data_size, | |
2910 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
2911 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2912 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2913 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2914 | struct btrfs_root *root, | |
2915 | struct btrfs_path *path, | |
2916 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
2917 | ||
2918 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2919 | struct btrfs_root *root, | |
2920 | struct btrfs_path *path, | |
2921 | struct btrfs_key *key, | |
2922 | u32 data_size) | |
2923 | { | |
2924 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2925 | } | |
2926 | ||
234b63a0 | 2927 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2928 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2929 | u64 time_seq); | |
1c8f52a5 AB |
2930 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2931 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2932 | { |
2933 | ++p->slots[0]; | |
2934 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2935 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2936 | return 0; |
2937 | } | |
1c8f52a5 AB |
2938 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2939 | { | |
2940 | return btrfs_next_old_item(root, p, 0); | |
2941 | } | |
7bb86316 | 2942 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 2943 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
2c536799 JM |
2944 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
2945 | struct btrfs_block_rsv *block_rsv, | |
2946 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
2947 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2948 | struct btrfs_root *root, | |
2949 | struct extent_buffer *node, | |
2950 | struct extent_buffer *parent); | |
7841cb28 DS |
2951 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2952 | { | |
2953 | /* | |
2954 | * Get synced with close_ctree() | |
2955 | */ | |
2956 | smp_mb(); | |
2957 | return fs_info->closing; | |
2958 | } | |
6c41761f DS |
2959 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
2960 | { | |
837d5b6e | 2961 | kfree(fs_info->balance_ctl); |
6c41761f DS |
2962 | kfree(fs_info->delayed_root); |
2963 | kfree(fs_info->extent_root); | |
2964 | kfree(fs_info->tree_root); | |
2965 | kfree(fs_info->chunk_root); | |
2966 | kfree(fs_info->dev_root); | |
2967 | kfree(fs_info->csum_root); | |
2968 | kfree(fs_info->super_copy); | |
2969 | kfree(fs_info->super_for_commit); | |
2970 | kfree(fs_info); | |
2971 | } | |
7841cb28 | 2972 | |
097b8a7c JS |
2973 | /* tree mod log functions from ctree.c */ |
2974 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2975 | struct seq_list *elem); | |
2976 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2977 | struct seq_list *elem); | |
2978 | static inline u64 btrfs_inc_tree_mod_seq(struct btrfs_fs_info *fs_info) | |
2979 | { | |
2980 | return atomic_inc_return(&fs_info->tree_mod_seq); | |
2981 | } | |
2982 | ||
dee26a9f | 2983 | /* root-item.c */ |
ea9e8b11 | 2984 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
2985 | struct btrfs_path *path, |
2986 | u64 root_id, u64 ref_id); | |
0660b5af CM |
2987 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
2988 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
2989 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2990 | const char *name, int name_len); | |
2991 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
2992 | struct btrfs_root *tree_root, | |
2993 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 2994 | const char *name, int name_len); |
e089f05c CM |
2995 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2996 | struct btrfs_key *key); | |
2997 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2998 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2999 | *item); | |
b45a9d8b JM |
3000 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
3001 | struct btrfs_root *root, | |
3002 | struct btrfs_key *key, | |
3003 | struct btrfs_root_item *item); | |
e089f05c CM |
3004 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct |
3005 | btrfs_root_item *item, struct btrfs_key *key); | |
5d4f98a2 | 3006 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid); |
76dda93c | 3007 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
3008 | void btrfs_set_root_node(struct btrfs_root_item *item, |
3009 | struct extent_buffer *node); | |
08fe4db1 LZ |
3010 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
3011 | ||
dee26a9f | 3012 | /* dir-item.c */ |
d397712b CM |
3013 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
3014 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 3015 | int name_len, struct inode *dir, |
aec7477b | 3016 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3017 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3018 | struct btrfs_root *root, | |
3019 | struct btrfs_path *path, u64 dir, | |
3020 | const char *name, int name_len, | |
3021 | int mod); | |
3022 | struct btrfs_dir_item * | |
3023 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3024 | struct btrfs_root *root, | |
3025 | struct btrfs_path *path, u64 dir, | |
3026 | u64 objectid, const char *name, int name_len, | |
3027 | int mod); | |
4df27c4d YZ |
3028 | struct btrfs_dir_item * |
3029 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3030 | struct btrfs_path *path, u64 dirid, | |
3031 | const char *name, int name_len); | |
7e38180e CM |
3032 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
3033 | struct btrfs_path *path, | |
7f5c1516 | 3034 | const char *name, int name_len); |
7e38180e CM |
3035 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3036 | struct btrfs_root *root, | |
3037 | struct btrfs_path *path, | |
3038 | struct btrfs_dir_item *di); | |
5103e947 | 3039 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3040 | struct btrfs_root *root, |
3041 | struct btrfs_path *path, u64 objectid, | |
3042 | const char *name, u16 name_len, | |
3043 | const void *data, u16 data_len); | |
5103e947 JB |
3044 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3045 | struct btrfs_root *root, | |
3046 | struct btrfs_path *path, u64 dir, | |
3047 | const char *name, u16 name_len, | |
3048 | int mod); | |
22a94d44 JB |
3049 | int verify_dir_item(struct btrfs_root *root, |
3050 | struct extent_buffer *leaf, | |
3051 | struct btrfs_dir_item *dir_item); | |
7b128766 JB |
3052 | |
3053 | /* orphan.c */ | |
3054 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3055 | struct btrfs_root *root, u64 offset); | |
3056 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3057 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3058 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3059 | |
dee26a9f | 3060 | /* inode-item.c */ |
3954401f CM |
3061 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3062 | struct btrfs_root *root, | |
3063 | const char *name, int name_len, | |
aec7477b | 3064 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3065 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3066 | struct btrfs_root *root, | |
3067 | const char *name, int name_len, | |
aec7477b | 3068 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
a22285a6 YZ |
3069 | struct btrfs_inode_ref * |
3070 | btrfs_lookup_inode_ref(struct btrfs_trans_handle *trans, | |
3071 | struct btrfs_root *root, | |
3072 | struct btrfs_path *path, | |
3073 | const char *name, int name_len, | |
3074 | u64 inode_objectid, u64 ref_objectid, int mod); | |
5f39d397 CM |
3075 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3076 | struct btrfs_root *root, | |
3077 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3078 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3079 | *root, struct btrfs_path *path, |
3080 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
3081 | |
3082 | /* file-item.c */ | |
459931ec CM |
3083 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
3084 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 3085 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3086 | struct bio *bio, u32 *dst); |
4b46fce2 JB |
3087 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
3088 | struct bio *bio, u64 logical_offset, u32 *dst); | |
b18c6685 | 3089 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3090 | struct btrfs_root *root, |
3091 | u64 objectid, u64 pos, | |
3092 | u64 disk_offset, u64 disk_num_bytes, | |
3093 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3094 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3095 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3096 | struct btrfs_root *root, | |
3097 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3098 | u64 bytenr, int mod); |
065631f6 | 3099 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3100 | struct btrfs_root *root, |
e6dcd2dc | 3101 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 3102 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3103 | struct bio *bio, u64 file_start, int contig); |
b18c6685 CM |
3104 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
3105 | struct btrfs_root *root, | |
3106 | struct btrfs_path *path, | |
d20f7043 | 3107 | u64 bytenr, int cow); |
1de037a4 CM |
3108 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
3109 | struct btrfs_root *root, struct btrfs_path *path, | |
3110 | u64 isize); | |
a2de733c AJ |
3111 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3112 | struct list_head *list, int search_commit); | |
39279cc3 | 3113 | /* inode.c */ |
b2675157 JB |
3114 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
3115 | size_t pg_offset, u64 start, u64 len, | |
3116 | int create); | |
4881ee5a CM |
3117 | |
3118 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3119 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3120 | #define ClearPageChecked ClearPageFsMisc |
3121 | #define SetPageChecked SetPageFsMisc | |
3122 | #define PageChecked PageFsMisc | |
3123 | #endif | |
3124 | ||
b6973aa6 LZ |
3125 | /* This forces readahead on a given range of bytes in an inode */ |
3126 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3127 | struct file_ra_state *ra, struct file *file, | |
3128 | pgoff_t offset, unsigned long req_size) | |
3129 | { | |
3130 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3131 | } | |
3132 | ||
3de4586c CM |
3133 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
3134 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
3135 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3136 | struct btrfs_root *root, | |
3137 | struct inode *dir, struct inode *inode, | |
3138 | const char *name, int name_len); | |
3139 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
3140 | struct inode *parent_inode, struct inode *inode, | |
3141 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
3142 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3143 | struct btrfs_root *root, | |
3144 | struct inode *dir, u64 objectid, | |
3145 | const char *name, int name_len); | |
e02119d5 CM |
3146 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3147 | struct btrfs_root *root, | |
3148 | struct inode *inode, u64 new_size, | |
3149 | u32 min_type); | |
3150 | ||
24bbcf04 | 3151 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
2ac55d41 JB |
3152 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
3153 | struct extent_state **cached_state); | |
f421950f CM |
3154 | int btrfs_writepages(struct address_space *mapping, |
3155 | struct writeback_control *wbc); | |
d2fb3437 | 3156 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
d82a6f1d | 3157 | struct btrfs_root *new_root, u64 new_dirid); |
239b14b3 | 3158 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
c8b97818 | 3159 | size_t size, struct bio *bio, unsigned long bio_flags); |
239b14b3 | 3160 | |
c2ec175c | 3161 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 3162 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3163 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3164 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
22c44fe6 JB |
3165 | int btrfs_dirty_inode(struct inode *inode); |
3166 | int btrfs_update_time(struct file *file); | |
39279cc3 CM |
3167 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3168 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3169 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3170 | int btrfs_init_cachep(void); |
3171 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3172 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3173 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3174 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 3175 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 3176 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
3177 | int create); |
3178 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
3179 | struct btrfs_root *root, | |
3180 | struct inode *inode); | |
5b21f2ed ZY |
3181 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
3182 | int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode); | |
66b4ffd1 | 3183 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3184 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3185 | struct btrfs_root *root); | |
a41ad394 | 3186 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3187 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
3188 | void btrfs_add_delayed_iput(struct inode *inode); |
3189 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
3190 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3191 | u64 start, u64 num_bytes, u64 min_size, | |
3192 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3193 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3194 | struct btrfs_trans_handle *trans, int mode, | |
3195 | u64 start, u64 num_bytes, u64 min_size, | |
3196 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 3197 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
3198 | |
3199 | /* ioctl.c */ | |
3200 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
6cbff00f CH |
3201 | void btrfs_update_iflags(struct inode *inode); |
3202 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
4cb5300b CM |
3203 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3204 | struct btrfs_ioctl_defrag_range_args *range, | |
3205 | u64 newer_than, unsigned long max_pages); | |
39279cc3 | 3206 | /* file.c */ |
4cb5300b CM |
3207 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
3208 | struct inode *inode); | |
3209 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
02c24a82 | 3210 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
5b21f2ed ZY |
3211 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
3212 | int skip_pinned); | |
828c0950 | 3213 | extern const struct file_operations btrfs_file_operations; |
920bbbfb YZ |
3214 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode, |
3215 | u64 start, u64 end, u64 *hint_byte, int drop_cache); | |
d899e052 | 3216 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 3217 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 3218 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
3219 | void btrfs_drop_pages(struct page **pages, size_t num_pages); |
3220 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, | |
3221 | struct page **pages, size_t num_pages, | |
3222 | loff_t pos, size_t write_bytes, | |
3223 | struct extent_state **cached); | |
6bf13c0c | 3224 | |
6702ed49 CM |
3225 | /* tree-defrag.c */ |
3226 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
3227 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
3228 | |
3229 | /* sysfs.c */ | |
3230 | int btrfs_init_sysfs(void); | |
3231 | void btrfs_exit_sysfs(void); | |
58176a96 | 3232 | |
5103e947 JB |
3233 | /* xattr.c */ |
3234 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3235 | |
edbd8d4e | 3236 | /* super.c */ |
edf24abe | 3237 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 3238 | int btrfs_sync_fs(struct super_block *sb, int wait); |
4da35113 | 3239 | void btrfs_printk(struct btrfs_fs_info *fs_info, const char *fmt, ...); |
acce952b | 3240 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3241 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3242 | |
49b25e05 JM |
3243 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
3244 | struct btrfs_root *root, const char *function, | |
3245 | unsigned int line, int errno); | |
3246 | ||
3247 | #define btrfs_abort_transaction(trans, root, errno) \ | |
3248 | do { \ | |
3249 | __btrfs_abort_transaction(trans, root, __func__, \ | |
3250 | __LINE__, errno); \ | |
3251 | } while (0) | |
acce952b | 3252 | |
3253 | #define btrfs_std_error(fs_info, errno) \ | |
3254 | do { \ | |
3255 | if ((errno)) \ | |
4da35113 JM |
3256 | __btrfs_std_error((fs_info), __func__, \ |
3257 | __LINE__, (errno), NULL); \ | |
3258 | } while (0) | |
3259 | ||
3260 | #define btrfs_error(fs_info, errno, fmt, args...) \ | |
3261 | do { \ | |
3262 | __btrfs_std_error((fs_info), __func__, __LINE__, \ | |
3263 | (errno), fmt, ##args); \ | |
acce952b | 3264 | } while (0) |
33268eaf | 3265 | |
8c342930 JM |
3266 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, |
3267 | unsigned int line, int errno, const char *fmt, ...); | |
3268 | ||
3269 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3270 | do { \ | |
3271 | struct btrfs_fs_info *_i = (fs_info); \ | |
3272 | __btrfs_panic(_i, __func__, __LINE__, errno, fmt, ##args); \ | |
3273 | BUG_ON(!(_i->mount_opt & BTRFS_MOUNT_PANIC_ON_FATAL_ERROR)); \ | |
acce952b | 3274 | } while (0) |
33268eaf JB |
3275 | |
3276 | /* acl.c */ | |
0eda294d | 3277 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3278 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
f34f57a3 YZ |
3279 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3280 | struct inode *inode, struct inode *dir); | |
33268eaf | 3281 | int btrfs_acl_chmod(struct inode *inode); |
9b89d95a | 3282 | #else |
ed8f3737 | 3283 | #define btrfs_get_acl NULL |
9b89d95a LZ |
3284 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3285 | struct inode *inode, struct inode *dir) | |
3286 | { | |
3287 | return 0; | |
3288 | } | |
3289 | static inline int btrfs_acl_chmod(struct inode *inode) | |
3290 | { | |
3291 | return 0; | |
3292 | } | |
3293 | #endif | |
0f9dd46c | 3294 | |
5d4f98a2 YZ |
3295 | /* relocation.c */ |
3296 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
3297 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
3298 | struct btrfs_root *root); | |
3299 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3300 | struct btrfs_root *root); | |
3301 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3302 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
3fd0a558 YZ |
3303 | void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3304 | struct btrfs_root *root, struct extent_buffer *buf, | |
3305 | struct extent_buffer *cow); | |
3306 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, | |
3307 | struct btrfs_pending_snapshot *pending, | |
3308 | u64 *bytes_to_reserve); | |
49b25e05 | 3309 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3310 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3311 | |
3312 | /* scrub.c */ | |
3313 | int btrfs_scrub_dev(struct btrfs_root *root, u64 devid, u64 start, u64 end, | |
8628764e | 3314 | struct btrfs_scrub_progress *progress, int readonly); |
143bede5 JM |
3315 | void btrfs_scrub_pause(struct btrfs_root *root); |
3316 | void btrfs_scrub_pause_super(struct btrfs_root *root); | |
3317 | void btrfs_scrub_continue(struct btrfs_root *root); | |
3318 | void btrfs_scrub_continue_super(struct btrfs_root *root); | |
49b25e05 | 3319 | int __btrfs_scrub_cancel(struct btrfs_fs_info *info); |
a2de733c AJ |
3320 | int btrfs_scrub_cancel(struct btrfs_root *root); |
3321 | int btrfs_scrub_cancel_dev(struct btrfs_root *root, struct btrfs_device *dev); | |
3322 | int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid); | |
3323 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, | |
3324 | struct btrfs_scrub_progress *progress); | |
3325 | ||
7414a03f AJ |
3326 | /* reada.c */ |
3327 | struct reada_control { | |
3328 | struct btrfs_root *root; /* tree to prefetch */ | |
3329 | struct btrfs_key key_start; | |
3330 | struct btrfs_key key_end; /* exclusive */ | |
3331 | atomic_t elems; | |
3332 | struct kref refcnt; | |
3333 | wait_queue_head_t wait; | |
3334 | }; | |
3335 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3336 | struct btrfs_key *start, struct btrfs_key *end); | |
3337 | int btrfs_reada_wait(void *handle); | |
3338 | void btrfs_reada_detach(void *handle); | |
3339 | int btree_readahead_hook(struct btrfs_root *root, struct extent_buffer *eb, | |
3340 | u64 start, int err); | |
3341 | ||
95a06077 JS |
3342 | static inline int is_fstree(u64 rootid) |
3343 | { | |
3344 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
3345 | (s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID) | |
3346 | return 1; | |
3347 | return 0; | |
3348 | } | |
eb60ceac | 3349 | #endif |