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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
810191ff CM |
22 | #include <linux/mm.h> |
23 | #include <linux/highmem.h> | |
e20d96d6 | 24 | #include <linux/fs.h> |
a2de733c | 25 | #include <linux/rwsem.h> |
803b2f54 | 26 | #include <linux/semaphore.h> |
58176a96 | 27 | #include <linux/completion.h> |
04160088 | 28 | #include <linux/backing-dev.h> |
e6dcd2dc | 29 | #include <linux/wait.h> |
5a0e3ad6 | 30 | #include <linux/slab.h> |
f8b18087 | 31 | #include <linux/kobject.h> |
1abe9b8a | 32 | #include <trace/events/btrfs.h> |
479965d6 | 33 | #include <asm/kmap_types.h> |
3b16a4e3 | 34 | #include <linux/pagemap.h> |
55e301fd | 35 | #include <linux/btrfs.h> |
db671160 | 36 | #include <linux/btrfs_tree.h> |
21c7e756 | 37 | #include <linux/workqueue.h> |
f667aef6 | 38 | #include <linux/security.h> |
ee22184b | 39 | #include <linux/sizes.h> |
d1310b2e | 40 | #include "extent_io.h" |
5f39d397 | 41 | #include "extent_map.h" |
8b712842 | 42 | #include "async-thread.h" |
e20d96d6 | 43 | |
e089f05c | 44 | struct btrfs_trans_handle; |
79154b1b | 45 | struct btrfs_transaction; |
a22285a6 | 46 | struct btrfs_pending_snapshot; |
35b7e476 CM |
47 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
48 | extern struct kmem_cache *btrfs_transaction_cachep; | |
49 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 50 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 51 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 52 | struct btrfs_ordered_sum; |
e089f05c | 53 | |
294e30fe JB |
54 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
55 | #define STATIC noinline | |
56 | #else | |
57 | #define STATIC static noinline | |
58 | #endif | |
59 | ||
cdb4c574 | 60 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 61 | |
72d7aefc | 62 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 63 | |
4008c04a | 64 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 65 | |
5d4f98a2 YZ |
66 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
67 | ||
727011e0 CM |
68 | /* |
69 | * the max metadata block size. This limit is somewhat artificial, | |
70 | * but the memmove costs go through the roof for larger blocks. | |
71 | */ | |
72 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
73 | ||
e20d96d6 CM |
74 | /* |
75 | * we can actually store much bigger names, but lets not confuse the rest | |
76 | * of linux | |
77 | */ | |
78 | #define BTRFS_NAME_LEN 255 | |
79 | ||
f186373f MF |
80 | /* |
81 | * Theoretical limit is larger, but we keep this down to a sane | |
82 | * value. That should limit greatly the possibility of collisions on | |
83 | * inode ref items. | |
84 | */ | |
85 | #define BTRFS_LINK_MAX 65535U | |
86 | ||
4d4ab6d6 | 87 | static const int btrfs_csum_sizes[] = { 4 }; |
607d432d | 88 | |
509659cd | 89 | /* four bytes for CRC32 */ |
3954401f | 90 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 91 | |
01327610 | 92 | /* specific to btrfs_map_block(), therefore not in include/linux/blk_types.h */ |
29a8d9a0 SB |
93 | #define REQ_GET_READ_MIRRORS (1 << 30) |
94 | ||
3d136a11 SB |
95 | /* ioprio of readahead is set to idle */ |
96 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
97 | ||
ee22184b | 98 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M |
e2d84521 | 99 | |
ee22184b | 100 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M |
dcab6a3b | 101 | |
0b86a832 CM |
102 | struct btrfs_mapping_tree { |
103 | struct extent_map_tree map_tree; | |
104 | }; | |
105 | ||
0b86a832 CM |
106 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
107 | { | |
108 | BUG_ON(num_stripes == 0); | |
109 | return sizeof(struct btrfs_chunk) + | |
110 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
111 | } | |
112 | ||
acce952b | 113 | /* |
114 | * File system states | |
115 | */ | |
87533c47 | 116 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 117 | #define BTRFS_FS_STATE_REMOUNTING 1 |
08748810 | 118 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
c404e0dc | 119 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
7c0260ee | 120 | #define BTRFS_FS_STATE_DUMMY_FS_INFO 4 |
acce952b | 121 | |
5d4f98a2 YZ |
122 | #define BTRFS_BACKREF_REV_MAX 256 |
123 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
124 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
125 | BTRFS_BACKREF_REV_SHIFT) | |
126 | ||
127 | #define BTRFS_OLD_BACKREF_REV 0 | |
128 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 129 | |
fec577fb CM |
130 | /* |
131 | * every tree block (leaf or node) starts with this header. | |
132 | */ | |
bb492bb0 | 133 | struct btrfs_header { |
e17cade2 | 134 | /* these first four must match the super block */ |
f254e52c | 135 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 136 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 137 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 138 | __le64 flags; |
e17cade2 CM |
139 | |
140 | /* allowed to be different from the super from here on down */ | |
141 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 142 | __le64 generation; |
4d775673 | 143 | __le64 owner; |
5f39d397 | 144 | __le32 nritems; |
9a6f11ed | 145 | u8 level; |
eb60ceac CM |
146 | } __attribute__ ((__packed__)); |
147 | ||
5f39d397 | 148 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
149 | sizeof(struct btrfs_header)) / \ |
150 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 151 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
707e8a07 | 152 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->nodesize)) |
14a1e067 JM |
153 | #define BTRFS_MAX_ITEM_SIZE(r) \ |
154 | (BTRFS_LEAF_DATA_SIZE(r) - sizeof(struct btrfs_item)) | |
7ec20afb DS |
155 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ |
156 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
14a1e067 | 157 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_MAX_ITEM_SIZE(r) - \ |
7ec20afb | 158 | BTRFS_FILE_EXTENT_INLINE_DATA_START) |
14a1e067 | 159 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_MAX_ITEM_SIZE(r) - \ |
f34f57a3 | 160 | sizeof(struct btrfs_dir_item)) |
eb60ceac | 161 | |
0b86a832 CM |
162 | |
163 | /* | |
164 | * this is a very generous portion of the super block, giving us | |
165 | * room to translate 14 chunks with 3 stripes each. | |
166 | */ | |
167 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
168 | ||
af31f5e5 CM |
169 | /* |
170 | * just in case we somehow lose the roots and are not able to mount, | |
171 | * we store an array of the roots from previous transactions | |
172 | * in the super. | |
173 | */ | |
174 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
175 | struct btrfs_root_backup { | |
176 | __le64 tree_root; | |
177 | __le64 tree_root_gen; | |
178 | ||
179 | __le64 chunk_root; | |
180 | __le64 chunk_root_gen; | |
181 | ||
182 | __le64 extent_root; | |
183 | __le64 extent_root_gen; | |
184 | ||
185 | __le64 fs_root; | |
186 | __le64 fs_root_gen; | |
187 | ||
188 | __le64 dev_root; | |
189 | __le64 dev_root_gen; | |
190 | ||
191 | __le64 csum_root; | |
192 | __le64 csum_root_gen; | |
193 | ||
194 | __le64 total_bytes; | |
195 | __le64 bytes_used; | |
196 | __le64 num_devices; | |
197 | /* future */ | |
d1423248 | 198 | __le64 unused_64[4]; |
af31f5e5 CM |
199 | |
200 | u8 tree_root_level; | |
201 | u8 chunk_root_level; | |
202 | u8 extent_root_level; | |
203 | u8 fs_root_level; | |
204 | u8 dev_root_level; | |
205 | u8 csum_root_level; | |
206 | /* future and to align */ | |
207 | u8 unused_8[10]; | |
208 | } __attribute__ ((__packed__)); | |
209 | ||
fec577fb CM |
210 | /* |
211 | * the super block basically lists the main trees of the FS | |
212 | * it currently lacks any block count etc etc | |
213 | */ | |
234b63a0 | 214 | struct btrfs_super_block { |
f254e52c | 215 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 216 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 217 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 218 | __le64 bytenr; /* this block number */ |
63b10fc4 | 219 | __le64 flags; |
e17cade2 CM |
220 | |
221 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 222 | __le64 magic; |
3768f368 CM |
223 | __le64 generation; |
224 | __le64 root; | |
0b86a832 | 225 | __le64 chunk_root; |
e02119d5 | 226 | __le64 log_root; |
c3027eb5 CM |
227 | |
228 | /* this will help find the new super based on the log root */ | |
229 | __le64 log_root_transid; | |
db94535d CM |
230 | __le64 total_bytes; |
231 | __le64 bytes_used; | |
2e635a27 | 232 | __le64 root_dir_objectid; |
8a4b83cc | 233 | __le64 num_devices; |
5f39d397 CM |
234 | __le32 sectorsize; |
235 | __le32 nodesize; | |
707e8a07 | 236 | __le32 __unused_leafsize; |
87ee04eb | 237 | __le32 stripesize; |
0b86a832 | 238 | __le32 sys_chunk_array_size; |
84234f3a | 239 | __le64 chunk_root_generation; |
f2b636e8 JB |
240 | __le64 compat_flags; |
241 | __le64 compat_ro_flags; | |
242 | __le64 incompat_flags; | |
607d432d | 243 | __le16 csum_type; |
db94535d | 244 | u8 root_level; |
0b86a832 | 245 | u8 chunk_root_level; |
e02119d5 | 246 | u8 log_root_level; |
0d81ba5d | 247 | struct btrfs_dev_item dev_item; |
c3027eb5 | 248 | |
7ae9c09d | 249 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 250 | |
0af3d00b | 251 | __le64 cache_generation; |
26432799 | 252 | __le64 uuid_tree_generation; |
0af3d00b | 253 | |
c3027eb5 | 254 | /* future expansion */ |
26432799 | 255 | __le64 reserved[30]; |
0b86a832 | 256 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 257 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
258 | } __attribute__ ((__packed__)); |
259 | ||
f2b636e8 JB |
260 | /* |
261 | * Compat flags that we support. If any incompat flags are set other than the | |
262 | * ones specified below then we will fail to mount | |
263 | */ | |
5d4f98a2 | 264 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
265 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
266 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
70f6d82e OS |
267 | |
268 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ | |
269 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE) | |
270 | ||
2eaa055f JM |
271 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
272 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
273 | ||
0af3d00b JB |
274 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
275 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 276 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 277 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 278 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 279 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
53b381b3 | 280 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 281 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f JB |
282 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
283 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) | |
f2b636e8 | 284 | |
2eaa055f JM |
285 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
286 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
287 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 288 | |
fec577fb | 289 | /* |
62e2749e | 290 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
291 | * the item in the leaf (relative to the start of the data area) |
292 | */ | |
0783fcfc | 293 | struct btrfs_item { |
e2fa7227 | 294 | struct btrfs_disk_key key; |
123abc88 | 295 | __le32 offset; |
5f39d397 | 296 | __le32 size; |
eb60ceac CM |
297 | } __attribute__ ((__packed__)); |
298 | ||
fec577fb CM |
299 | /* |
300 | * leaves have an item area and a data area: | |
301 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
302 | * | |
303 | * The data is separate from the items to get the keys closer together | |
304 | * during searches. | |
305 | */ | |
234b63a0 | 306 | struct btrfs_leaf { |
bb492bb0 | 307 | struct btrfs_header header; |
123abc88 | 308 | struct btrfs_item items[]; |
eb60ceac CM |
309 | } __attribute__ ((__packed__)); |
310 | ||
fec577fb CM |
311 | /* |
312 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
313 | * other blocks | |
314 | */ | |
123abc88 CM |
315 | struct btrfs_key_ptr { |
316 | struct btrfs_disk_key key; | |
317 | __le64 blockptr; | |
74493f7a | 318 | __le64 generation; |
123abc88 CM |
319 | } __attribute__ ((__packed__)); |
320 | ||
234b63a0 | 321 | struct btrfs_node { |
bb492bb0 | 322 | struct btrfs_header header; |
123abc88 | 323 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
324 | } __attribute__ ((__packed__)); |
325 | ||
fec577fb | 326 | /* |
234b63a0 CM |
327 | * btrfs_paths remember the path taken from the root down to the leaf. |
328 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
329 | * to any other levels that are present. |
330 | * | |
331 | * The slots array records the index of the item or block pointer | |
332 | * used while walking the tree. | |
333 | */ | |
e4058b54 | 334 | enum { READA_NONE = 0, READA_BACK, READA_FORWARD }; |
234b63a0 | 335 | struct btrfs_path { |
5f39d397 | 336 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 337 | int slots[BTRFS_MAX_LEVEL]; |
925baedd | 338 | /* if there is real range locking, this locks field will change */ |
4fb72bf2 | 339 | u8 locks[BTRFS_MAX_LEVEL]; |
dccabfad | 340 | u8 reada; |
925baedd | 341 | /* keep some upper locks as we walk down */ |
7853f15b | 342 | u8 lowest_level; |
459931ec CM |
343 | |
344 | /* | |
345 | * set by btrfs_split_item, tells search_slot to keep all locks | |
346 | * and to force calls to keep space in the nodes | |
347 | */ | |
b9473439 CM |
348 | unsigned int search_for_split:1; |
349 | unsigned int keep_locks:1; | |
350 | unsigned int skip_locking:1; | |
351 | unsigned int leave_spinning:1; | |
5d4f98a2 | 352 | unsigned int search_commit_root:1; |
3f8a18cc | 353 | unsigned int need_commit_sem:1; |
5f5bc6b1 | 354 | unsigned int skip_release_on_error:1; |
eb60ceac | 355 | }; |
5d4f98a2 YZ |
356 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
357 | sizeof(struct btrfs_item)) | |
e922e087 SB |
358 | struct btrfs_dev_replace { |
359 | u64 replace_state; /* see #define above */ | |
360 | u64 time_started; /* seconds since 1-Jan-1970 */ | |
361 | u64 time_stopped; /* seconds since 1-Jan-1970 */ | |
362 | atomic64_t num_write_errors; | |
363 | atomic64_t num_uncorrectable_read_errors; | |
364 | ||
365 | u64 cursor_left; | |
366 | u64 committed_cursor_left; | |
367 | u64 cursor_left_last_write_of_item; | |
368 | u64 cursor_right; | |
369 | ||
370 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
371 | ||
372 | int is_valid; | |
373 | int item_needs_writeback; | |
374 | struct btrfs_device *srcdev; | |
375 | struct btrfs_device *tgtdev; | |
376 | ||
377 | pid_t lock_owner; | |
378 | atomic_t nesting_level; | |
379 | struct mutex lock_finishing_cancel_unmount; | |
73beece9 LB |
380 | rwlock_t lock; |
381 | atomic_t read_locks; | |
382 | atomic_t blocking_readers; | |
383 | wait_queue_head_t read_lock_wq; | |
e922e087 SB |
384 | |
385 | struct btrfs_scrub_progress scrub_progress; | |
386 | }; | |
387 | ||
c1895442 JM |
388 | /* For raid type sysfs entries */ |
389 | struct raid_kobject { | |
390 | int raid_type; | |
391 | struct kobject kobj; | |
392 | }; | |
393 | ||
6324fbf3 | 394 | struct btrfs_space_info { |
26b47ff6 | 395 | spinlock_t lock; |
6a63209f | 396 | |
89a55897 JB |
397 | u64 total_bytes; /* total bytes in the space, |
398 | this doesn't take mirrors into account */ | |
b742bb82 | 399 | u64 bytes_used; /* total bytes used, |
e9c54999 | 400 | this doesn't take mirrors into account */ |
6a63209f JB |
401 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
402 | transaction finishes */ | |
403 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
404 | current allocations */ | |
6a63209f | 405 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 406 | delalloc/allocations */ |
26b47ff6 MX |
407 | u64 bytes_readonly; /* total bytes that are read only */ |
408 | ||
4f4db217 JB |
409 | u64 max_extent_size; /* This will hold the maximum extent size of |
410 | the space info if we had an ENOSPC in the | |
411 | allocator. */ | |
412 | ||
26b47ff6 MX |
413 | unsigned int full:1; /* indicates that we cannot allocate any more |
414 | chunks for this space */ | |
415 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
416 | ||
417 | unsigned int flush:1; /* set if we are trying to make space */ | |
418 | ||
419 | unsigned int force_alloc; /* set if we need to force a chunk | |
420 | alloc for this space */ | |
421 | ||
b742bb82 | 422 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
423 | u64 disk_total; /* total bytes on disk, takes mirrors into |
424 | account */ | |
6a63209f | 425 | |
26b47ff6 MX |
426 | u64 flags; |
427 | ||
b150a4f1 JB |
428 | /* |
429 | * bytes_pinned is kept in line with what is actually pinned, as in | |
430 | * we've called update_block_group and dropped the bytes_used counter | |
431 | * and increased the bytes_pinned counter. However this means that | |
432 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
bb7ab3b9 AB |
433 | * delayed refs are flushed, so this counter is inc'ed every time we |
434 | * call btrfs_free_extent so it is a realtime count of what will be | |
01327610 | 435 | * freed once the transaction is committed. It will be zeroed every |
bb7ab3b9 | 436 | * time the transaction commits. |
b150a4f1 JB |
437 | */ |
438 | struct percpu_counter total_bytes_pinned; | |
439 | ||
6324fbf3 | 440 | struct list_head list; |
75c68e9f | 441 | /* Protected by the spinlock 'lock'. */ |
633c0aad | 442 | struct list_head ro_bgs; |
957780eb JB |
443 | struct list_head priority_tickets; |
444 | struct list_head tickets; | |
0f9dd46c | 445 | |
26b47ff6 | 446 | struct rw_semaphore groups_sem; |
0f9dd46c | 447 | /* for block groups in our same type */ |
b742bb82 | 448 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 449 | wait_queue_head_t wait; |
6ab0a202 JM |
450 | |
451 | struct kobject kobj; | |
c1895442 | 452 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
0f9dd46c JB |
453 | }; |
454 | ||
66d8f3dd MX |
455 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
456 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
457 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
458 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
459 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
460 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
461 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
462 | ||
f0486c68 YZ |
463 | struct btrfs_block_rsv { |
464 | u64 size; | |
465 | u64 reserved; | |
f0486c68 | 466 | struct btrfs_space_info *space_info; |
f0486c68 | 467 | spinlock_t lock; |
66d8f3dd MX |
468 | unsigned short full; |
469 | unsigned short type; | |
470 | unsigned short failfast; | |
f0486c68 YZ |
471 | }; |
472 | ||
fa9c0d79 CM |
473 | /* |
474 | * free clusters are used to claim free space in relatively large chunks, | |
475 | * allowing us to do less seeky writes. They are used for all metadata | |
476 | * allocations and data allocations in ssd mode. | |
477 | */ | |
478 | struct btrfs_free_cluster { | |
479 | spinlock_t lock; | |
480 | spinlock_t refill_lock; | |
481 | struct rb_root root; | |
482 | ||
483 | /* largest extent in this cluster */ | |
484 | u64 max_size; | |
485 | ||
486 | /* first extent starting offset */ | |
487 | u64 window_start; | |
488 | ||
c759c4e1 JB |
489 | /* We did a full search and couldn't create a cluster */ |
490 | bool fragmented; | |
491 | ||
fa9c0d79 CM |
492 | struct btrfs_block_group_cache *block_group; |
493 | /* | |
494 | * when a cluster is allocated from a block group, we put the | |
495 | * cluster onto a list in the block group so that it can | |
496 | * be freed before the block group is freed. | |
497 | */ | |
498 | struct list_head block_group_list; | |
6324fbf3 CM |
499 | }; |
500 | ||
817d52f8 JB |
501 | enum btrfs_caching_type { |
502 | BTRFS_CACHE_NO = 0, | |
503 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
504 | BTRFS_CACHE_FAST = 2, |
505 | BTRFS_CACHE_FINISHED = 3, | |
36cce922 | 506 | BTRFS_CACHE_ERROR = 4, |
817d52f8 JB |
507 | }; |
508 | ||
0af3d00b JB |
509 | enum btrfs_disk_cache_state { |
510 | BTRFS_DC_WRITTEN = 0, | |
511 | BTRFS_DC_ERROR = 1, | |
512 | BTRFS_DC_CLEAR = 2, | |
513 | BTRFS_DC_SETUP = 3, | |
0af3d00b JB |
514 | }; |
515 | ||
11833d66 YZ |
516 | struct btrfs_caching_control { |
517 | struct list_head list; | |
518 | struct mutex mutex; | |
519 | wait_queue_head_t wait; | |
bab39bf9 | 520 | struct btrfs_work work; |
11833d66 YZ |
521 | struct btrfs_block_group_cache *block_group; |
522 | u64 progress; | |
523 | atomic_t count; | |
524 | }; | |
525 | ||
73fa48b6 OS |
526 | /* Once caching_thread() finds this much free space, it will wake up waiters. */ |
527 | #define CACHING_CTL_WAKE_UP (1024 * 1024 * 2) | |
528 | ||
4c6d1d85 CM |
529 | struct btrfs_io_ctl { |
530 | void *cur, *orig; | |
531 | struct page *page; | |
532 | struct page **pages; | |
533 | struct btrfs_root *root; | |
c9dc4c65 | 534 | struct inode *inode; |
4c6d1d85 CM |
535 | unsigned long size; |
536 | int index; | |
537 | int num_pages; | |
c9dc4c65 CM |
538 | int entries; |
539 | int bitmaps; | |
4c6d1d85 CM |
540 | unsigned check_crcs:1; |
541 | }; | |
542 | ||
9078a3e1 CM |
543 | struct btrfs_block_group_cache { |
544 | struct btrfs_key key; | |
545 | struct btrfs_block_group_item item; | |
817d52f8 | 546 | struct btrfs_fs_info *fs_info; |
0af3d00b | 547 | struct inode *inode; |
c286ac48 | 548 | spinlock_t lock; |
324ae4df | 549 | u64 pinned; |
e8569813 | 550 | u64 reserved; |
e570fd27 | 551 | u64 delalloc_bytes; |
1b2da372 | 552 | u64 bytes_super; |
0b86a832 | 553 | u64 flags; |
5b0e95bf | 554 | u64 cache_generation; |
a5ed9182 OS |
555 | u32 sectorsize; |
556 | ||
557 | /* | |
558 | * If the free space extent count exceeds this number, convert the block | |
559 | * group to bitmaps. | |
560 | */ | |
561 | u32 bitmap_high_thresh; | |
562 | ||
563 | /* | |
564 | * If the free space extent count drops below this number, convert the | |
565 | * block group back to extents. | |
566 | */ | |
567 | u32 bitmap_low_thresh; | |
53b381b3 | 568 | |
e570fd27 MX |
569 | /* |
570 | * It is just used for the delayed data space allocation because | |
571 | * only the data space allocation and the relative metadata update | |
572 | * can be done cross the transaction. | |
573 | */ | |
574 | struct rw_semaphore data_rwsem; | |
575 | ||
53b381b3 DW |
576 | /* for raid56, this is a full stripe, without parity */ |
577 | unsigned long full_stripe_len; | |
578 | ||
868f401a | 579 | unsigned int ro; |
0410c94a | 580 | unsigned int iref:1; |
4f69cb98 | 581 | unsigned int has_caching_ctl:1; |
04216820 | 582 | unsigned int removed:1; |
0af3d00b JB |
583 | |
584 | int disk_cache_state; | |
0f9dd46c | 585 | |
817d52f8 | 586 | /* cache tracking stuff */ |
817d52f8 | 587 | int cached; |
11833d66 YZ |
588 | struct btrfs_caching_control *caching_ctl; |
589 | u64 last_byte_to_unpin; | |
817d52f8 | 590 | |
0f9dd46c JB |
591 | struct btrfs_space_info *space_info; |
592 | ||
593 | /* free space cache stuff */ | |
34d52cb6 | 594 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
595 | |
596 | /* block group cache stuff */ | |
597 | struct rb_node cache_node; | |
598 | ||
599 | /* for block groups in the same raid type */ | |
600 | struct list_head list; | |
d2fb3437 YZ |
601 | |
602 | /* usage count */ | |
603 | atomic_t count; | |
fa9c0d79 CM |
604 | |
605 | /* List of struct btrfs_free_clusters for this block group. | |
606 | * Today it will only have one thing on it, but that may change | |
607 | */ | |
608 | struct list_head cluster_list; | |
ea658bad | 609 | |
47ab2a6c JB |
610 | /* For delayed block group creation or deletion of empty block groups */ |
611 | struct list_head bg_list; | |
633c0aad JB |
612 | |
613 | /* For read-only block groups */ | |
614 | struct list_head ro_list; | |
04216820 FM |
615 | |
616 | atomic_t trimming; | |
ce93ec54 JB |
617 | |
618 | /* For dirty block groups */ | |
619 | struct list_head dirty_list; | |
c9dc4c65 CM |
620 | struct list_head io_list; |
621 | ||
622 | struct btrfs_io_ctl io_ctl; | |
a5ed9182 | 623 | |
9cfa3e34 FM |
624 | /* |
625 | * Incremented when doing extent allocations and holding a read lock | |
626 | * on the space_info's groups_sem semaphore. | |
627 | * Decremented when an ordered extent that represents an IO against this | |
628 | * block group's range is created (after it's added to its inode's | |
629 | * root's list of ordered extents) or immediately after the allocation | |
630 | * if it's a metadata extent or fallocate extent (for these cases we | |
631 | * don't create ordered extents). | |
632 | */ | |
633 | atomic_t reservations; | |
634 | ||
f78c436c FM |
635 | /* |
636 | * Incremented while holding the spinlock *lock* by a task checking if | |
637 | * it can perform a nocow write (incremented if the value for the *ro* | |
638 | * field is 0). Decremented by such tasks once they create an ordered | |
639 | * extent or before that if some error happens before reaching that step. | |
640 | * This is to prevent races between block group relocation and nocow | |
641 | * writes through direct IO. | |
642 | */ | |
643 | atomic_t nocow_writers; | |
644 | ||
a5ed9182 OS |
645 | /* Lock for free space tree operations. */ |
646 | struct mutex free_space_lock; | |
647 | ||
648 | /* | |
649 | * Does the block group need to be added to the free space tree? | |
650 | * Protected by free_space_lock. | |
651 | */ | |
652 | int needs_free_space; | |
9078a3e1 | 653 | }; |
0b86a832 | 654 | |
097b8a7c JS |
655 | /* delayed seq elem */ |
656 | struct seq_list { | |
657 | struct list_head list; | |
658 | u64 seq; | |
659 | }; | |
660 | ||
3284da7b DS |
661 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
662 | ||
5d80366e JB |
663 | enum btrfs_orphan_cleanup_state { |
664 | ORPHAN_CLEANUP_STARTED = 1, | |
665 | ORPHAN_CLEANUP_DONE = 2, | |
666 | }; | |
667 | ||
53b381b3 DW |
668 | /* used by the raid56 code to lock stripes for read/modify/write */ |
669 | struct btrfs_stripe_hash { | |
670 | struct list_head hash_list; | |
671 | wait_queue_head_t wait; | |
672 | spinlock_t lock; | |
673 | }; | |
674 | ||
675 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
676 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
677 | struct list_head stripe_cache; |
678 | spinlock_t cache_lock; | |
679 | int cache_size; | |
680 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
681 | }; |
682 | ||
683 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
684 | ||
21c7e756 MX |
685 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
686 | ||
097b8a7c | 687 | /* fs_info */ |
5d4f98a2 | 688 | struct reloc_control; |
0b86a832 | 689 | struct btrfs_device; |
8a4b83cc | 690 | struct btrfs_fs_devices; |
c9e9f97b | 691 | struct btrfs_balance_control; |
16cdcec7 | 692 | struct btrfs_delayed_root; |
9f5fae2f | 693 | struct btrfs_fs_info { |
5f39d397 | 694 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 695 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
696 | struct btrfs_root *extent_root; |
697 | struct btrfs_root *tree_root; | |
0b86a832 CM |
698 | struct btrfs_root *chunk_root; |
699 | struct btrfs_root *dev_root; | |
3de4586c | 700 | struct btrfs_root *fs_root; |
d20f7043 | 701 | struct btrfs_root *csum_root; |
416ac51d | 702 | struct btrfs_root *quota_root; |
f7a81ea4 | 703 | struct btrfs_root *uuid_root; |
a5ed9182 | 704 | struct btrfs_root *free_space_root; |
e02119d5 CM |
705 | |
706 | /* the log root tree is a directory of all the other log roots */ | |
707 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
708 | |
709 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 710 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 711 | |
0f9dd46c JB |
712 | /* block group cache stuff */ |
713 | spinlock_t block_group_cache_lock; | |
a1897fdd | 714 | u64 first_logical_byte; |
0f9dd46c JB |
715 | struct rb_root block_group_cache_tree; |
716 | ||
2bf64758 JB |
717 | /* keep track of unallocated space */ |
718 | spinlock_t free_chunk_lock; | |
719 | u64 free_chunk_space; | |
720 | ||
11833d66 YZ |
721 | struct extent_io_tree freed_extents[2]; |
722 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 723 | |
0b86a832 CM |
724 | /* logical->physical extent mapping */ |
725 | struct btrfs_mapping_tree mapping_tree; | |
726 | ||
16cdcec7 MX |
727 | /* |
728 | * block reservation for extent, checksum, root tree and | |
729 | * delayed dir index item | |
730 | */ | |
f0486c68 YZ |
731 | struct btrfs_block_rsv global_block_rsv; |
732 | /* block reservation for delay allocation */ | |
733 | struct btrfs_block_rsv delalloc_block_rsv; | |
734 | /* block reservation for metadata operations */ | |
735 | struct btrfs_block_rsv trans_block_rsv; | |
736 | /* block reservation for chunk tree */ | |
737 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
738 | /* block reservation for delayed operations */ |
739 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
740 | |
741 | struct btrfs_block_rsv empty_block_rsv; | |
742 | ||
293ffd5f | 743 | u64 generation; |
15ee9bc7 | 744 | u64 last_trans_committed; |
0a2b2a84 | 745 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
746 | |
747 | /* | |
748 | * this is updated to the current trans every time a full commit | |
749 | * is required instead of the faster short fsync log commits | |
750 | */ | |
751 | u64 last_trans_log_full_commit; | |
25cd999e | 752 | unsigned long mount_opt; |
572d9ab7 DS |
753 | /* |
754 | * Track requests for actions that need to be done during transaction | |
755 | * commit (like for some mount options). | |
756 | */ | |
757 | unsigned long pending_changes; | |
261507a0 | 758 | unsigned long compress_type:4; |
8b87dc17 | 759 | int commit_interval; |
8c6a3ee6 MX |
760 | /* |
761 | * It is a suggestive number, the read side is safe even it gets a | |
762 | * wrong number because we will write out the data into a regular | |
763 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
764 | * so it is also safe. | |
765 | */ | |
6f568d35 | 766 | u64 max_inline; |
c018daec MX |
767 | /* |
768 | * Protected by ->chunk_mutex and sb->s_umount. | |
769 | * | |
770 | * The reason that we use two lock to protect it is because only | |
771 | * remount and mount operations can change it and these two operations | |
772 | * are under sb->s_umount, but the read side (chunk allocation) can not | |
773 | * acquire sb->s_umount or the deadlock would happen. So we use two | |
774 | * locks to protect it. On the write side, we must acquire two locks, | |
775 | * and on the read side, we just need acquire one of them. | |
776 | */ | |
8f662a76 | 777 | u64 alloc_start; |
79154b1b | 778 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 779 | wait_queue_head_t transaction_throttle; |
f9295749 | 780 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 781 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 782 | wait_queue_head_t async_submit_wait; |
e02119d5 | 783 | |
ceda0864 MX |
784 | /* |
785 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
786 | * when they are updated. | |
787 | * | |
788 | * Because we do not clear the flags for ever, so we needn't use | |
789 | * the lock on the read side. | |
790 | * | |
791 | * We also needn't use the lock when we mount the fs, because | |
792 | * there is no other task which will update the flag. | |
793 | */ | |
794 | spinlock_t super_lock; | |
6c41761f DS |
795 | struct btrfs_super_block *super_copy; |
796 | struct btrfs_super_block *super_for_commit; | |
0b86a832 | 797 | struct block_device *__bdev; |
e20d96d6 | 798 | struct super_block *sb; |
d98237b3 | 799 | struct inode *btree_inode; |
04160088 | 800 | struct backing_dev_info bdi; |
e02119d5 | 801 | struct mutex tree_log_mutex; |
a74a4b97 CM |
802 | struct mutex transaction_kthread_mutex; |
803 | struct mutex cleaner_mutex; | |
925baedd | 804 | struct mutex chunk_mutex; |
7d9eb12c | 805 | struct mutex volume_mutex; |
53b381b3 | 806 | |
1bbc621e CM |
807 | /* |
808 | * this is taken to make sure we don't set block groups ro after | |
809 | * the free space cache has been allocated on them | |
810 | */ | |
811 | struct mutex ro_block_group_mutex; | |
812 | ||
53b381b3 DW |
813 | /* this is used during read/modify/write to make sure |
814 | * no two ios are trying to mod the same stripe at the same | |
815 | * time | |
816 | */ | |
817 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
818 | ||
5a3f23d5 CM |
819 | /* |
820 | * this protects the ordered operations list only while we are | |
821 | * processing all of the entries on it. This way we make | |
822 | * sure the commit code doesn't find the list temporarily empty | |
823 | * because another function happens to be doing non-waiting preflush | |
824 | * before jumping into the main commit. | |
825 | */ | |
826 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 827 | |
9e351cc8 | 828 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 829 | |
c71bf099 | 830 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 831 | |
c71bf099 | 832 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
833 | struct srcu_struct subvol_srcu; |
834 | ||
a4abeea4 | 835 | spinlock_t trans_lock; |
7585717f CM |
836 | /* |
837 | * the reloc mutex goes with the trans lock, it is taken | |
838 | * during commit to protect us from the relocation code | |
839 | */ | |
840 | struct mutex reloc_mutex; | |
841 | ||
8fd17795 | 842 | struct list_head trans_list; |
facda1e7 | 843 | struct list_head dead_roots; |
11833d66 | 844 | struct list_head caching_block_groups; |
e02119d5 | 845 | |
24bbcf04 YZ |
846 | spinlock_t delayed_iput_lock; |
847 | struct list_head delayed_iputs; | |
c2d6cb16 | 848 | struct mutex cleaner_delayed_iput_mutex; |
24bbcf04 | 849 | |
f29021b2 JS |
850 | /* this protects tree_mod_seq_list */ |
851 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 852 | atomic64_t tree_mod_seq; |
f29021b2 JS |
853 | struct list_head tree_mod_seq_list; |
854 | ||
855 | /* this protects tree_mod_log */ | |
856 | rwlock_t tree_mod_log_lock; | |
857 | struct rb_root tree_mod_log; | |
858 | ||
cb03c743 | 859 | atomic_t nr_async_submits; |
8c8bee1d | 860 | atomic_t async_submit_draining; |
0986fe9e | 861 | atomic_t nr_async_bios; |
771ed689 | 862 | atomic_t async_delalloc_pages; |
a4abeea4 | 863 | atomic_t open_ioctl_trans; |
ce9adaa5 | 864 | |
3eaa2885 | 865 | /* |
199c2a9c | 866 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 867 | */ |
199c2a9c | 868 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
869 | |
870 | /* | |
199c2a9c MX |
871 | * all fs/file tree roots in which there are data=ordered extents |
872 | * pending writeback are added into this list. | |
873 | * | |
5a3f23d5 CM |
874 | * these can span multiple transactions and basically include |
875 | * every dirty data page that isn't from nodatacow | |
876 | */ | |
199c2a9c | 877 | struct list_head ordered_roots; |
5a3f23d5 | 878 | |
573bfb72 | 879 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
880 | spinlock_t delalloc_root_lock; |
881 | /* all fs/file tree roots that have delalloc inodes. */ | |
882 | struct list_head delalloc_roots; | |
3eaa2885 | 883 | |
8b712842 CM |
884 | /* |
885 | * there is a pool of worker threads for checksumming during writes | |
886 | * and a pool for checksumming after reads. This is because readers | |
887 | * can run with FS locks held, and the writers may be waiting for | |
888 | * those locks. We don't want ordering in the pending list to cause | |
889 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
890 | * |
891 | * A third pool does submit_bio to avoid deadlocking with the other | |
892 | * two | |
8b712842 | 893 | */ |
d458b054 QW |
894 | struct btrfs_workqueue *workers; |
895 | struct btrfs_workqueue *delalloc_workers; | |
896 | struct btrfs_workqueue *flush_workers; | |
897 | struct btrfs_workqueue *endio_workers; | |
898 | struct btrfs_workqueue *endio_meta_workers; | |
899 | struct btrfs_workqueue *endio_raid56_workers; | |
8b110e39 | 900 | struct btrfs_workqueue *endio_repair_workers; |
d458b054 QW |
901 | struct btrfs_workqueue *rmw_workers; |
902 | struct btrfs_workqueue *endio_meta_write_workers; | |
903 | struct btrfs_workqueue *endio_write_workers; | |
904 | struct btrfs_workqueue *endio_freespace_worker; | |
905 | struct btrfs_workqueue *submit_workers; | |
906 | struct btrfs_workqueue *caching_workers; | |
907 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 908 | |
247e743c CM |
909 | /* |
910 | * fixup workers take dirty pages that didn't properly go through | |
911 | * the cow mechanism and make them safe to write. It happens | |
912 | * for the sys_munmap function call path | |
913 | */ | |
d458b054 QW |
914 | struct btrfs_workqueue *fixup_workers; |
915 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b CM |
916 | |
917 | /* the extent workers do delayed refs on the extent allocation tree */ | |
918 | struct btrfs_workqueue *extent_workers; | |
a74a4b97 CM |
919 | struct task_struct *transaction_kthread; |
920 | struct task_struct *cleaner_kthread; | |
4543df7e | 921 | int thread_pool_size; |
8b712842 | 922 | |
6ab0a202 | 923 | struct kobject *space_info_kobj; |
e66f709b | 924 | int do_barriers; |
facda1e7 | 925 | int closing; |
e02119d5 | 926 | int log_root_recovering; |
47ab2a6c | 927 | int open; |
9f5fae2f | 928 | |
324ae4df | 929 | u64 total_pinned; |
b9473439 | 930 | |
e2d84521 MX |
931 | /* used to keep from writing metadata until there is a nice batch */ |
932 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 933 | struct percpu_counter delalloc_bytes; |
e2d84521 | 934 | s32 dirty_metadata_batch; |
963d678b MX |
935 | s32 delalloc_batch; |
936 | ||
0b86a832 CM |
937 | struct list_head dirty_cowonly_roots; |
938 | ||
8a4b83cc | 939 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
940 | |
941 | /* | |
942 | * the space_info list is almost entirely read only. It only changes | |
943 | * when we add a new raid type to the FS, and that happens | |
944 | * very rarely. RCU is used to protect it. | |
945 | */ | |
6324fbf3 | 946 | struct list_head space_info; |
4184ea7f | 947 | |
b4d7c3c9 LZ |
948 | struct btrfs_space_info *data_sinfo; |
949 | ||
5d4f98a2 YZ |
950 | struct reloc_control *reloc_ctl; |
951 | ||
fa9c0d79 CM |
952 | /* data_alloc_cluster is only used in ssd mode */ |
953 | struct btrfs_free_cluster data_alloc_cluster; | |
954 | ||
955 | /* all metadata allocations go through this cluster */ | |
956 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 957 | |
4cb5300b CM |
958 | /* auto defrag inodes go here */ |
959 | spinlock_t defrag_inodes_lock; | |
960 | struct rb_root defrag_inodes; | |
961 | atomic_t defrag_running; | |
962 | ||
de98ced9 MX |
963 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
964 | seqlock_t profiles_lock; | |
a46d11a8 ID |
965 | /* |
966 | * these three are in extended format (availability of single | |
967 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
968 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
969 | */ | |
d18a2c44 CM |
970 | u64 avail_data_alloc_bits; |
971 | u64 avail_metadata_alloc_bits; | |
972 | u64 avail_system_alloc_bits; | |
788f20eb | 973 | |
c9e9f97b ID |
974 | /* restriper state */ |
975 | spinlock_t balance_lock; | |
976 | struct mutex balance_mutex; | |
837d5b6e ID |
977 | atomic_t balance_running; |
978 | atomic_t balance_pause_req; | |
a7e99c69 | 979 | atomic_t balance_cancel_req; |
c9e9f97b | 980 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 981 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 982 | |
97e728d4 JB |
983 | unsigned data_chunk_allocations; |
984 | unsigned metadata_ratio; | |
985 | ||
788f20eb | 986 | void *bdev_holder; |
acce952b | 987 | |
a2de733c AJ |
988 | /* private scrub information */ |
989 | struct mutex scrub_lock; | |
990 | atomic_t scrubs_running; | |
991 | atomic_t scrub_pause_req; | |
992 | atomic_t scrubs_paused; | |
993 | atomic_t scrub_cancel_req; | |
994 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 995 | int scrub_workers_refcnt; |
d458b054 QW |
996 | struct btrfs_workqueue *scrub_workers; |
997 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
998 | struct btrfs_workqueue *scrub_nocow_workers; | |
20b2e302 | 999 | struct btrfs_workqueue *scrub_parity_workers; |
a2de733c | 1000 | |
21adbd5c SB |
1001 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1002 | u32 check_integrity_print_mask; | |
1003 | #endif | |
416ac51d AJ |
1004 | /* |
1005 | * quota information | |
1006 | */ | |
1007 | unsigned int quota_enabled:1; | |
1008 | ||
1009 | /* | |
1010 | * quota_enabled only changes state after a commit. This holds the | |
1011 | * next state. | |
1012 | */ | |
1013 | unsigned int pending_quota_state:1; | |
1014 | ||
1015 | /* is qgroup tracking in a consistent state? */ | |
1016 | u64 qgroup_flags; | |
1017 | ||
1018 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1019 | struct rb_root qgroup_tree; | |
fcebe456 | 1020 | struct rb_root qgroup_op_tree; |
416ac51d | 1021 | spinlock_t qgroup_lock; |
fcebe456 JB |
1022 | spinlock_t qgroup_op_lock; |
1023 | atomic_t qgroup_op_seq; | |
416ac51d | 1024 | |
1e8f9158 WS |
1025 | /* |
1026 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1027 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1028 | */ | |
1029 | struct ulist *qgroup_ulist; | |
1030 | ||
f2f6ed3d WS |
1031 | /* protect user change for quota operations */ |
1032 | struct mutex qgroup_ioctl_lock; | |
1033 | ||
416ac51d AJ |
1034 | /* list of dirty qgroups to be written at next commit */ |
1035 | struct list_head dirty_qgroups; | |
1036 | ||
e69bcee3 | 1037 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 1038 | u64 qgroup_seq; |
21adbd5c | 1039 | |
2f232036 JS |
1040 | /* qgroup rescan items */ |
1041 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1042 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1043 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1044 | struct completion qgroup_rescan_completion; |
b382a324 | 1045 | struct btrfs_work qgroup_rescan_work; |
2f232036 | 1046 | |
acce952b | 1047 | /* filesystem state */ |
87533c47 | 1048 | unsigned long fs_state; |
16cdcec7 MX |
1049 | |
1050 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1051 | |
90519d66 AJ |
1052 | /* readahead tree */ |
1053 | spinlock_t reada_lock; | |
1054 | struct radix_tree_root reada_tree; | |
531f4b1a | 1055 | |
2fefd558 ZL |
1056 | /* readahead works cnt */ |
1057 | atomic_t reada_works_cnt; | |
1058 | ||
f28491e0 JB |
1059 | /* Extent buffer radix tree */ |
1060 | spinlock_t buffer_lock; | |
1061 | struct radix_tree_root buffer_radix; | |
1062 | ||
af31f5e5 CM |
1063 | /* next backup root to be overwritten */ |
1064 | int backup_root_index; | |
5af3e8cc SB |
1065 | |
1066 | int num_tolerated_disk_barrier_failures; | |
e922e087 SB |
1067 | |
1068 | /* device replace state */ | |
1069 | struct btrfs_dev_replace dev_replace; | |
5ac00add SB |
1070 | |
1071 | atomic_t mutually_exclusive_operation_running; | |
803b2f54 | 1072 | |
c404e0dc MX |
1073 | struct percpu_counter bio_counter; |
1074 | wait_queue_head_t replace_wait; | |
1075 | ||
803b2f54 | 1076 | struct semaphore uuid_tree_rescan_sem; |
70f80175 | 1077 | unsigned int update_uuid_tree_gen:1; |
21c7e756 MX |
1078 | |
1079 | /* Used to reclaim the metadata space in the background. */ | |
1080 | struct work_struct async_reclaim_work; | |
47ab2a6c JB |
1081 | |
1082 | spinlock_t unused_bgs_lock; | |
1083 | struct list_head unused_bgs; | |
d4b450cd | 1084 | struct mutex unused_bg_unpin_mutex; |
67c5e7d4 | 1085 | struct mutex delete_unused_bgs_mutex; |
f667aef6 QW |
1086 | |
1087 | /* For btrfs to record security options */ | |
1088 | struct security_mnt_opts security_opts; | |
04216820 FM |
1089 | |
1090 | /* | |
1091 | * Chunks that can't be freed yet (under a trim/discard operation) | |
1092 | * and will be latter freed. Protected by fs_info->chunk_mutex. | |
1093 | */ | |
1094 | struct list_head pinned_chunks; | |
511711af CM |
1095 | |
1096 | int creating_free_space_tree; | |
324ae4df | 1097 | }; |
0b86a832 | 1098 | |
8257b2dc MX |
1099 | struct btrfs_subvolume_writers { |
1100 | struct percpu_counter counter; | |
1101 | wait_queue_head_t wait; | |
1102 | }; | |
1103 | ||
27cdeb70 MX |
1104 | /* |
1105 | * The state of btrfs root | |
1106 | */ | |
1107 | /* | |
1108 | * btrfs_record_root_in_trans is a multi-step process, | |
1109 | * and it can race with the balancing code. But the | |
1110 | * race is very small, and only the first time the root | |
1111 | * is added to each transaction. So IN_TRANS_SETUP | |
1112 | * is used to tell us when more checks are required | |
1113 | */ | |
1114 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 | |
1115 | #define BTRFS_ROOT_REF_COWS 1 | |
1116 | #define BTRFS_ROOT_TRACK_DIRTY 2 | |
1117 | #define BTRFS_ROOT_IN_RADIX 3 | |
f5ee5c9a JM |
1118 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 4 |
1119 | #define BTRFS_ROOT_DEFRAG_RUNNING 5 | |
1120 | #define BTRFS_ROOT_FORCE_COW 6 | |
1121 | #define BTRFS_ROOT_MULTI_LOG_TASKS 7 | |
1122 | #define BTRFS_ROOT_DIRTY 8 | |
27cdeb70 | 1123 | |
9f5fae2f CM |
1124 | /* |
1125 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1126 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1127 | */ |
1128 | struct btrfs_root { | |
5f39d397 | 1129 | struct extent_buffer *node; |
925baedd | 1130 | |
5f39d397 | 1131 | struct extent_buffer *commit_root; |
e02119d5 | 1132 | struct btrfs_root *log_root; |
1a40e23b | 1133 | struct btrfs_root *reloc_root; |
31153d81 | 1134 | |
27cdeb70 | 1135 | unsigned long state; |
62e2749e CM |
1136 | struct btrfs_root_item root_item; |
1137 | struct btrfs_key root_key; | |
9f5fae2f | 1138 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1139 | struct extent_io_tree dirty_log_pages; |
1140 | ||
a2135011 | 1141 | struct mutex objectid_mutex; |
7237f183 | 1142 | |
f0486c68 YZ |
1143 | spinlock_t accounting_lock; |
1144 | struct btrfs_block_rsv *block_rsv; | |
1145 | ||
581bb050 | 1146 | /* free ino cache stuff */ |
581bb050 | 1147 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1148 | enum btrfs_caching_type ino_cache_state; |
1149 | spinlock_t ino_cache_lock; | |
1150 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1151 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1152 | u64 ino_cache_progress; |
1153 | struct inode *ino_cache_inode; | |
581bb050 | 1154 | |
e02119d5 | 1155 | struct mutex log_mutex; |
7237f183 YZ |
1156 | wait_queue_head_t log_writer_wait; |
1157 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1158 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1159 | atomic_t log_writers; |
1160 | atomic_t log_commit[2]; | |
2ecb7923 | 1161 | atomic_t log_batch; |
bb14a59b | 1162 | int log_transid; |
d1433deb MX |
1163 | /* No matter the commit succeeds or not*/ |
1164 | int log_transid_committed; | |
1165 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1166 | int last_log_commit; |
ff782e0a | 1167 | pid_t log_start_pid; |
ea8c2819 | 1168 | |
0f7d52f4 CM |
1169 | u64 objectid; |
1170 | u64 last_trans; | |
5f39d397 CM |
1171 | |
1172 | /* data allocations are done in sectorsize units */ | |
1173 | u32 sectorsize; | |
1174 | ||
1175 | /* node allocations are done in nodesize units */ | |
1176 | u32 nodesize; | |
1177 | ||
87ee04eb CM |
1178 | u32 stripesize; |
1179 | ||
9f5fae2f | 1180 | u32 type; |
13a8a7c8 YZ |
1181 | |
1182 | u64 highest_objectid; | |
7585717f | 1183 | |
05653ef3 | 1184 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
0d4cf4e6 | 1185 | /* only used with CONFIG_BTRFS_FS_RUN_SANITY_TESTS is enabled */ |
faa2dbf0 | 1186 | u64 alloc_bytenr; |
05653ef3 | 1187 | #endif |
faa2dbf0 | 1188 | |
3f157a2f | 1189 | u64 defrag_trans_start; |
6702ed49 | 1190 | struct btrfs_key defrag_progress; |
0ef3e66b | 1191 | struct btrfs_key defrag_max; |
58176a96 | 1192 | char *name; |
0b86a832 CM |
1193 | |
1194 | /* the dirty list is only used by non-reference counted roots */ | |
1195 | struct list_head dirty_list; | |
7b128766 | 1196 | |
5d4f98a2 YZ |
1197 | struct list_head root_list; |
1198 | ||
2ab28f32 JB |
1199 | spinlock_t log_extents_lock[2]; |
1200 | struct list_head logged_list[2]; | |
1201 | ||
d68fc57b | 1202 | spinlock_t orphan_lock; |
8a35d95f | 1203 | atomic_t orphan_inodes; |
d68fc57b | 1204 | struct btrfs_block_rsv *orphan_block_rsv; |
d68fc57b | 1205 | int orphan_cleanup_state; |
3394e160 | 1206 | |
5d4f98a2 YZ |
1207 | spinlock_t inode_lock; |
1208 | /* red-black tree that keeps track of in-memory inodes */ | |
1209 | struct rb_root inode_tree; | |
1210 | ||
16cdcec7 MX |
1211 | /* |
1212 | * radix tree that keeps track of delayed nodes of every inode, | |
1213 | * protected by inode_lock | |
1214 | */ | |
1215 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1216 | /* |
1217 | * right now this just gets used so that a root has its own devid | |
1218 | * for stat. It may be used for more later | |
1219 | */ | |
0ee5dc67 | 1220 | dev_t anon_dev; |
f1ebcc74 | 1221 | |
5f3ab90a | 1222 | spinlock_t root_item_lock; |
b0feb9d9 | 1223 | atomic_t refs; |
eb73c1b7 | 1224 | |
573bfb72 | 1225 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1226 | spinlock_t delalloc_lock; |
1227 | /* | |
1228 | * all of the inodes that have delalloc bytes. It is possible for | |
1229 | * this list to be empty even when there is still dirty data=ordered | |
1230 | * extents waiting to finish IO. | |
1231 | */ | |
1232 | struct list_head delalloc_inodes; | |
1233 | struct list_head delalloc_root; | |
1234 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1235 | |
1236 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
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; | |
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 | */ | |
1248 | struct list_head ordered_extents; | |
1249 | struct list_head ordered_root; | |
1250 | u64 nr_ordered_extents; | |
2c686537 DS |
1251 | |
1252 | /* | |
1253 | * Number of currently running SEND ioctls to prevent | |
1254 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1255 | */ | |
1256 | int send_in_progress; | |
8257b2dc MX |
1257 | struct btrfs_subvolume_writers *subv_writers; |
1258 | atomic_t will_be_snapshoted; | |
55eeaf05 QW |
1259 | |
1260 | /* For qgroup metadata space reserve */ | |
1261 | atomic_t qgroup_meta_rsv; | |
62e2749e CM |
1262 | }; |
1263 | ||
0942caa3 DS |
1264 | /* |
1265 | * Flags for mount options. | |
1266 | * | |
1267 | * Note: don't forget to add new options to btrfs_show_options() | |
1268 | */ | |
21ad10cf CM |
1269 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1270 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1271 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1272 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1273 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1274 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1275 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1276 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1277 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1278 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1279 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1280 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1281 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1282 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1283 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1284 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1285 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1286 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
8dcddfa0 | 1287 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
9555c6c1 | 1288 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1289 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1290 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1291 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 1292 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
d0bd4560 JB |
1293 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
1294 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) | |
f7d3d2f9 | 1295 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
96da0919 | 1296 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
b6cda9bc | 1297 | |
8b87dc17 | 1298 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1299 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1300 | |
b6cda9bc CM |
1301 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1302 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1303 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
3cdde224 | 1304 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
b6cda9bc | 1305 | BTRFS_MOUNT_##opt) |
572d9ab7 | 1306 | |
3cdde224 | 1307 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1308 | { \ |
3cdde224 JM |
1309 | if (!btrfs_test_opt(fs_info, opt)) \ |
1310 | btrfs_info(fs_info, fmt, ##args); \ | |
1311 | btrfs_set_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1312 | } |
1313 | ||
3cdde224 | 1314 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1315 | { \ |
3cdde224 JM |
1316 | if (btrfs_test_opt(fs_info, opt)) \ |
1317 | btrfs_info(fs_info, fmt, ##args); \ | |
1318 | btrfs_clear_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1319 | } |
1320 | ||
d0bd4560 JB |
1321 | #ifdef CONFIG_BTRFS_DEBUG |
1322 | static inline int | |
1323 | btrfs_should_fragment_free_space(struct btrfs_root *root, | |
1324 | struct btrfs_block_group_cache *block_group) | |
1325 | { | |
3cdde224 | 1326 | return (btrfs_test_opt(root->fs_info, FRAGMENT_METADATA) && |
d0bd4560 | 1327 | block_group->flags & BTRFS_BLOCK_GROUP_METADATA) || |
3cdde224 | 1328 | (btrfs_test_opt(root->fs_info, FRAGMENT_DATA) && |
d0bd4560 JB |
1329 | block_group->flags & BTRFS_BLOCK_GROUP_DATA); |
1330 | } | |
1331 | #endif | |
1332 | ||
572d9ab7 DS |
1333 | /* |
1334 | * Requests for changes that need to be done during transaction commit. | |
1335 | * | |
1336 | * Internal mount options that are used for special handling of the real | |
1337 | * mount options (eg. cannot be set during remount and have to be set during | |
1338 | * transaction commit) | |
1339 | */ | |
1340 | ||
7e1876ac DS |
1341 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
1342 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) | |
d51033d0 | 1343 | #define BTRFS_PENDING_COMMIT (2) |
7e1876ac | 1344 | |
572d9ab7 DS |
1345 | #define btrfs_test_pending(info, opt) \ |
1346 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1347 | #define btrfs_set_pending(info, opt) \ | |
1348 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1349 | #define btrfs_clear_pending(info, opt) \ | |
1350 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1351 | ||
1352 | /* | |
1353 | * Helpers for setting pending mount option changes. | |
1354 | * | |
1355 | * Expects corresponding macros | |
1356 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1357 | */ | |
1358 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1359 | do { \ | |
1360 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1361 | btrfs_info((info), fmt, ##args); \ | |
1362 | btrfs_set_pending((info), SET_##opt); \ | |
1363 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1364 | } \ | |
1365 | } while(0) | |
1366 | ||
1367 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1368 | do { \ | |
1369 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1370 | btrfs_info((info), fmt, ##args); \ | |
1371 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1372 | btrfs_clear_pending((info), SET_##opt); \ | |
1373 | } \ | |
1374 | } while(0) | |
1375 | ||
b98b6767 Y |
1376 | /* |
1377 | * Inode flags | |
1378 | */ | |
fdebe2bd Y |
1379 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1380 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1381 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1382 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1383 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1384 | #define BTRFS_INODE_SYNC (1 << 5) |
1385 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1386 | #define BTRFS_INODE_APPEND (1 << 7) | |
1387 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1388 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1389 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1390 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1391 | |
08fe4db1 LZ |
1392 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1393 | ||
cfed81a0 CM |
1394 | struct btrfs_map_token { |
1395 | struct extent_buffer *eb; | |
1396 | char *kaddr; | |
1397 | unsigned long offset; | |
1398 | }; | |
1399 | ||
2e78c927 CR |
1400 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
1401 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) | |
1402 | ||
cfed81a0 CM |
1403 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
1404 | { | |
ad914559 | 1405 | token->kaddr = NULL; |
cfed81a0 CM |
1406 | } |
1407 | ||
01327610 | 1408 | /* some macros to generate set/get functions for the struct fields. This |
5f39d397 CM |
1409 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
1410 | * one for u8: | |
1411 | */ | |
1412 | #define le8_to_cpu(v) (v) | |
1413 | #define cpu_to_le8(v) (v) | |
1414 | #define __le8 u8 | |
1415 | ||
1416 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1417 | read_extent_buffer(eb, (char *)(result), \ | |
1418 | ((unsigned long)(ptr)) + \ | |
1419 | offsetof(type, member), \ | |
1420 | sizeof(((type *)0)->member))) | |
1421 | ||
1422 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1423 | write_extent_buffer(eb, (char *)(result), \ | |
1424 | ((unsigned long)(ptr)) + \ | |
1425 | offsetof(type, member), \ | |
1426 | sizeof(((type *)0)->member))) | |
1427 | ||
18077bb4 LZ |
1428 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1429 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1430 | unsigned long off, \ | |
1431 | struct btrfs_map_token *token); \ | |
1432 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1433 | unsigned long off, u##bits val, \ | |
1434 | struct btrfs_map_token *token); \ | |
1435 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ | |
1436 | unsigned long off) \ | |
1437 | { \ | |
1438 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1439 | } \ | |
1440 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ | |
1441 | unsigned long off, u##bits val) \ | |
1442 | { \ | |
1443 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1444 | } | |
1445 | ||
1446 | DECLARE_BTRFS_SETGET_BITS(8) | |
1447 | DECLARE_BTRFS_SETGET_BITS(16) | |
1448 | DECLARE_BTRFS_SETGET_BITS(32) | |
1449 | DECLARE_BTRFS_SETGET_BITS(64) | |
1450 | ||
5f39d397 | 1451 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
18077bb4 LZ |
1452 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
1453 | { \ | |
1454 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1455 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1456 | } \ | |
1457 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1458 | u##bits val) \ | |
1459 | { \ | |
1460 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1461 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1462 | } \ | |
1463 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ | |
1464 | struct btrfs_map_token *token) \ | |
1465 | { \ | |
1466 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1467 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1468 | } \ | |
1469 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
1470 | type *s, u##bits val, \ | |
1471 | struct btrfs_map_token *token) \ | |
1472 | { \ | |
1473 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1474 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
1475 | } | |
5f39d397 CM |
1476 | |
1477 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1478 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1479 | { \ | |
727011e0 | 1480 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1481 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1482 | return res; \ |
5f39d397 CM |
1483 | } \ |
1484 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1485 | u##bits val) \ | |
1486 | { \ | |
727011e0 | 1487 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1488 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1489 | } |
9078a3e1 | 1490 | |
5f39d397 CM |
1491 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1492 | static inline u##bits btrfs_##name(type *s) \ | |
1493 | { \ | |
1494 | return le##bits##_to_cpu(s->member); \ | |
1495 | } \ | |
1496 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1497 | { \ | |
1498 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1499 | } |
1500 | ||
0b86a832 CM |
1501 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1502 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1503 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1504 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1505 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1506 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1507 | start_offset, 64); | |
0b86a832 CM |
1508 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1509 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1510 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1511 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1512 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1513 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1514 | |
8a4b83cc CM |
1515 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1516 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1517 | total_bytes, 64); | |
1518 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1519 | bytes_used, 64); | |
1520 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1521 | io_align, 32); | |
1522 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1523 | io_width, 32); | |
1524 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1525 | sector_size, 32); | |
1526 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1527 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1528 | dev_group, 32); | |
1529 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1530 | seek_speed, 8); | |
1531 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1532 | bandwidth, 8); | |
2b82032c YZ |
1533 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1534 | generation, 64); | |
8a4b83cc | 1535 | |
410ba3a2 | 1536 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1537 | { |
410ba3a2 | 1538 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1539 | } |
1540 | ||
1473b24e | 1541 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1542 | { |
1473b24e | 1543 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1544 | } |
1545 | ||
e17cade2 | 1546 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1547 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1548 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1549 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1550 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1551 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1552 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1553 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1554 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1555 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1556 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1557 | ||
e17cade2 CM |
1558 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1559 | { | |
1560 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1561 | } | |
1562 | ||
1563 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1564 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1565 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1566 | stripe_len, 64); | |
1567 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1568 | io_align, 32); | |
1569 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1570 | io_width, 32); | |
1571 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1572 | sector_size, 32); | |
1573 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1574 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1575 | num_stripes, 16); | |
321aecc6 CM |
1576 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1577 | sub_stripes, 16); | |
0b86a832 CM |
1578 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1579 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1580 | ||
1581 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1582 | int nr) | |
1583 | { | |
1584 | unsigned long offset = (unsigned long)c; | |
1585 | offset += offsetof(struct btrfs_chunk, stripe); | |
1586 | offset += nr * sizeof(struct btrfs_stripe); | |
1587 | return (struct btrfs_stripe *)offset; | |
1588 | } | |
1589 | ||
a443755f CM |
1590 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1591 | { | |
1592 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1593 | } | |
1594 | ||
0b86a832 CM |
1595 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1596 | struct btrfs_chunk *c, int nr) | |
1597 | { | |
1598 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1599 | } | |
1600 | ||
0b86a832 CM |
1601 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1602 | struct btrfs_chunk *c, int nr) | |
1603 | { | |
1604 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1605 | } | |
1606 | ||
5f39d397 CM |
1607 | /* struct btrfs_block_group_item */ |
1608 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1609 | used, 64); | |
1610 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1611 | used, 64); | |
0b86a832 CM |
1612 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1613 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1614 | |
1615 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1616 | struct btrfs_block_group_item, chunk_objectid, 64); |
1617 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1618 | struct btrfs_block_group_item, flags, 64); | |
1619 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1620 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1621 | |
208acb8c OS |
1622 | /* struct btrfs_free_space_info */ |
1623 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1624 | extent_count, 32); | |
1625 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1626 | ||
3954401f CM |
1627 | /* struct btrfs_inode_ref */ |
1628 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1629 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1630 | |
f186373f MF |
1631 | /* struct btrfs_inode_extref */ |
1632 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1633 | parent_objectid, 64); | |
1634 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1635 | name_len, 16); | |
1636 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1637 | ||
5f39d397 CM |
1638 | /* struct btrfs_inode_item */ |
1639 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1640 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1641 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1642 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1643 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1644 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1645 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1646 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1647 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1648 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1649 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1650 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1651 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1652 | generation, 64); | |
1653 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1654 | sequence, 64); | |
1655 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1656 | transid, 64); | |
1657 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1658 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1659 | nbytes, 64); | |
1660 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1661 | block_group, 64); | |
1662 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1663 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1664 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1665 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1666 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1667 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1668 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1669 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1670 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1671 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1672 | |
0b86a832 | 1673 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1674 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1675 | chunk_tree, 64); | |
1676 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1677 | chunk_objectid, 64); | |
1678 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1679 | chunk_offset, 64); | |
0b86a832 CM |
1680 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1681 | ||
231e88f4 | 1682 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
1683 | { |
1684 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 1685 | return (unsigned long)dev + ptr; |
e17cade2 CM |
1686 | } |
1687 | ||
5d4f98a2 YZ |
1688 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1689 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1690 | generation, 64); | |
1691 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1692 | |
5d4f98a2 YZ |
1693 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1694 | ||
1695 | ||
1696 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1697 | ||
1698 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1699 | struct btrfs_tree_block_info *item, | |
1700 | struct btrfs_disk_key *key) | |
1701 | { | |
1702 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1703 | } | |
1704 | ||
1705 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1706 | struct btrfs_tree_block_info *item, | |
1707 | struct btrfs_disk_key *key) | |
1708 | { | |
1709 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1710 | } | |
e20d96d6 | 1711 | |
5d4f98a2 YZ |
1712 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1713 | root, 64); | |
1714 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1715 | objectid, 64); | |
1716 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1717 | offset, 64); | |
1718 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1719 | count, 32); | |
1720 | ||
1721 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1722 | count, 32); | |
1723 | ||
1724 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1725 | type, 8); | |
1726 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1727 | offset, 64); | |
1728 | ||
1729 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1730 | { | |
1731 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1732 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1733 | return sizeof(struct btrfs_extent_inline_ref); | |
1734 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1735 | return sizeof(struct btrfs_shared_data_ref) + | |
1736 | sizeof(struct btrfs_extent_inline_ref); | |
1737 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1738 | return sizeof(struct btrfs_extent_data_ref) + | |
1739 | offsetof(struct btrfs_extent_inline_ref, offset); | |
1740 | BUG(); | |
1741 | return 0; | |
1742 | } | |
1743 | ||
1744 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1745 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1746 | generation, 64); | |
1747 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1748 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1749 | |
5f39d397 CM |
1750 | /* struct btrfs_node */ |
1751 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1752 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
1753 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
1754 | blockptr, 64); | |
1755 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
1756 | generation, 64); | |
e20d96d6 | 1757 | |
5f39d397 | 1758 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1759 | { |
5f39d397 CM |
1760 | unsigned long ptr; |
1761 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1762 | sizeof(struct btrfs_key_ptr) * nr; | |
1763 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1764 | } |
1765 | ||
5f39d397 CM |
1766 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1767 | int nr, u64 val) | |
cf27e1ee | 1768 | { |
5f39d397 CM |
1769 | unsigned long ptr; |
1770 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1771 | sizeof(struct btrfs_key_ptr) * nr; | |
1772 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1773 | } |
1774 | ||
74493f7a CM |
1775 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1776 | { | |
1777 | unsigned long ptr; | |
1778 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1779 | sizeof(struct btrfs_key_ptr) * nr; | |
1780 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1781 | } | |
1782 | ||
1783 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1784 | int nr, u64 val) | |
1785 | { | |
1786 | unsigned long ptr; | |
1787 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1788 | sizeof(struct btrfs_key_ptr) * nr; | |
1789 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1790 | } | |
1791 | ||
810191ff | 1792 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1793 | { |
5f39d397 CM |
1794 | return offsetof(struct btrfs_node, ptrs) + |
1795 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1796 | } |
1797 | ||
e644d021 CM |
1798 | void btrfs_node_key(struct extent_buffer *eb, |
1799 | struct btrfs_disk_key *disk_key, int nr); | |
1800 | ||
5f39d397 CM |
1801 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1802 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1803 | { |
5f39d397 CM |
1804 | unsigned long ptr; |
1805 | ptr = btrfs_node_key_ptr_offset(nr); | |
1806 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1807 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1808 | } |
1809 | ||
5f39d397 CM |
1810 | /* struct btrfs_item */ |
1811 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1812 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
1813 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
1814 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 1815 | |
5f39d397 | 1816 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1817 | { |
5f39d397 CM |
1818 | return offsetof(struct btrfs_leaf, items) + |
1819 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1820 | } |
1821 | ||
dd3cc16b | 1822 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 1823 | { |
5f39d397 | 1824 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1825 | } |
1826 | ||
5f39d397 CM |
1827 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1828 | struct btrfs_item *item) | |
0783fcfc | 1829 | { |
5f39d397 | 1830 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1831 | } |
1832 | ||
5f39d397 | 1833 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1834 | { |
dd3cc16b | 1835 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1836 | } |
1837 | ||
5f39d397 | 1838 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1839 | { |
dd3cc16b | 1840 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1841 | } |
1842 | ||
5f39d397 | 1843 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1844 | { |
dd3cc16b | 1845 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1846 | } |
1847 | ||
5f39d397 CM |
1848 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1849 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1850 | { |
dd3cc16b | 1851 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1852 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1853 | } |
1854 | ||
5f39d397 CM |
1855 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1856 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1857 | { |
dd3cc16b | 1858 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1859 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1860 | } |
1861 | ||
e02119d5 CM |
1862 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1863 | ||
0660b5af CM |
1864 | /* |
1865 | * struct btrfs_root_ref | |
1866 | */ | |
1867 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1868 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1869 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1870 | ||
5f39d397 | 1871 | /* struct btrfs_dir_item */ |
5103e947 | 1872 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1873 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1874 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1875 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
1876 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
1877 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
1878 | data_len, 16); | |
1879 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
1880 | name_len, 16); | |
1881 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
1882 | transid, 64); | |
1d4f6404 | 1883 | |
5f39d397 CM |
1884 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1885 | struct btrfs_dir_item *item, | |
1886 | struct btrfs_disk_key *key) | |
1d4f6404 | 1887 | { |
5f39d397 | 1888 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1889 | } |
1890 | ||
5f39d397 CM |
1891 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1892 | struct btrfs_dir_item *item, | |
1893 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1894 | { |
5f39d397 | 1895 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1896 | } |
1897 | ||
0af3d00b JB |
1898 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1899 | num_entries, 64); | |
1900 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1901 | num_bitmaps, 64); | |
1902 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1903 | generation, 64); | |
1904 | ||
1905 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
1906 | struct btrfs_free_space_header *h, | |
1907 | struct btrfs_disk_key *key) | |
1908 | { | |
1909 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1910 | } | |
1911 | ||
1912 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1913 | struct btrfs_free_space_header *h, | |
1914 | struct btrfs_disk_key *key) | |
1915 | { | |
1916 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1917 | } | |
1918 | ||
5f39d397 CM |
1919 | /* struct btrfs_disk_key */ |
1920 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1921 | objectid, 64); | |
1922 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1923 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1924 | |
e2fa7227 CM |
1925 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1926 | struct btrfs_disk_key *disk) | |
1927 | { | |
1928 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1929 | cpu->type = disk->type; |
e2fa7227 CM |
1930 | cpu->objectid = le64_to_cpu(disk->objectid); |
1931 | } | |
1932 | ||
1933 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1934 | struct btrfs_key *cpu) | |
1935 | { | |
1936 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1937 | disk->type = cpu->type; |
e2fa7227 CM |
1938 | disk->objectid = cpu_to_le64(cpu->objectid); |
1939 | } | |
1940 | ||
5f39d397 CM |
1941 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1942 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1943 | { |
5f39d397 CM |
1944 | struct btrfs_disk_key disk_key; |
1945 | btrfs_node_key(eb, &disk_key, nr); | |
1946 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1947 | } |
1948 | ||
5f39d397 CM |
1949 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1950 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1951 | { |
5f39d397 CM |
1952 | struct btrfs_disk_key disk_key; |
1953 | btrfs_item_key(eb, &disk_key, nr); | |
1954 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1955 | } |
1956 | ||
5f39d397 CM |
1957 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1958 | struct btrfs_dir_item *item, | |
1959 | struct btrfs_key *key) | |
4d775673 | 1960 | { |
5f39d397 CM |
1961 | struct btrfs_disk_key disk_key; |
1962 | btrfs_dir_item_key(eb, item, &disk_key); | |
1963 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1964 | } |
1965 | ||
58176a96 | 1966 | |
5f39d397 | 1967 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1968 | { |
5f39d397 | 1969 | return key->type; |
3768f368 CM |
1970 | } |
1971 | ||
5f39d397 | 1972 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1973 | { |
5f39d397 | 1974 | key->type = val; |
3768f368 CM |
1975 | } |
1976 | ||
5f39d397 | 1977 | /* struct btrfs_header */ |
db94535d | 1978 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1979 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1980 | generation, 64); | |
1981 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1982 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1983 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1984 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
1985 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
1986 | generation, 64); | |
1987 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
1988 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
1989 | nritems, 32); | |
1990 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 1991 | |
63b10fc4 CM |
1992 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1993 | { | |
1994 | return (btrfs_header_flags(eb) & flag) == flag; | |
1995 | } | |
1996 | ||
1997 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1998 | { | |
1999 | u64 flags = btrfs_header_flags(eb); | |
2000 | btrfs_set_header_flags(eb, flags | flag); | |
2001 | return (flags & flag) == flag; | |
2002 | } | |
2003 | ||
2004 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2005 | { | |
2006 | u64 flags = btrfs_header_flags(eb); | |
2007 | btrfs_set_header_flags(eb, flags & ~flag); | |
2008 | return (flags & flag) == flag; | |
2009 | } | |
2010 | ||
5d4f98a2 YZ |
2011 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2012 | { | |
2013 | u64 flags = btrfs_header_flags(eb); | |
2014 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2015 | } | |
2016 | ||
2017 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2018 | int rev) | |
2019 | { | |
2020 | u64 flags = btrfs_header_flags(eb); | |
2021 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2022 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2023 | btrfs_set_header_flags(eb, flags); | |
2024 | } | |
2025 | ||
0a4e5586 | 2026 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2027 | { |
fba6aa75 | 2028 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2029 | } |
2030 | ||
b308bc2f | 2031 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
e17cade2 | 2032 | { |
b308bc2f | 2033 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2034 | } |
2035 | ||
5f39d397 | 2036 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2037 | { |
d397712b | 2038 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2039 | } |
2040 | ||
5f39d397 | 2041 | /* struct btrfs_root_item */ |
84234f3a YZ |
2042 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2043 | generation, 64); | |
5f39d397 | 2044 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2045 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2046 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2047 | |
84234f3a YZ |
2048 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2049 | generation, 64); | |
db94535d CM |
2050 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2051 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2052 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2053 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2054 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2055 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2056 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2057 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2058 | last_snapshot, 64); | |
8ea05e3a AB |
2059 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2060 | generation_v2, 64); | |
2061 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2062 | ctransid, 64); | |
2063 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2064 | otransid, 64); | |
2065 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2066 | stransid, 64); | |
2067 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2068 | rtransid, 64); | |
123abc88 | 2069 | |
b83cc969 LZ |
2070 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2071 | { | |
6ed3cf2c | 2072 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2073 | } |
2074 | ||
521e0546 DS |
2075 | static inline bool btrfs_root_dead(struct btrfs_root *root) |
2076 | { | |
2077 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2078 | } | |
2079 | ||
af31f5e5 CM |
2080 | /* struct btrfs_root_backup */ |
2081 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2082 | tree_root, 64); | |
2083 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2084 | tree_root_gen, 64); | |
2085 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2086 | tree_root_level, 8); | |
2087 | ||
2088 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2089 | chunk_root, 64); | |
2090 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2091 | chunk_root_gen, 64); | |
2092 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2093 | chunk_root_level, 8); | |
2094 | ||
2095 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2096 | extent_root, 64); | |
2097 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2098 | extent_root_gen, 64); | |
2099 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2100 | extent_root_level, 8); | |
2101 | ||
2102 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2103 | fs_root, 64); | |
2104 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2105 | fs_root_gen, 64); | |
2106 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2107 | fs_root_level, 8); | |
2108 | ||
2109 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2110 | dev_root, 64); | |
2111 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2112 | dev_root_gen, 64); | |
2113 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2114 | dev_root_level, 8); | |
2115 | ||
2116 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2117 | csum_root, 64); | |
2118 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2119 | csum_root_gen, 64); | |
2120 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2121 | csum_root_level, 8); | |
2122 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2123 | total_bytes, 64); | |
2124 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2125 | bytes_used, 64); | |
2126 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2127 | num_devices, 64); | |
2128 | ||
0940ebf6 ID |
2129 | /* struct btrfs_balance_item */ |
2130 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2131 | |
0940ebf6 ID |
2132 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2133 | struct btrfs_balance_item *bi, | |
2134 | struct btrfs_disk_balance_args *ba) | |
2135 | { | |
2136 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2137 | } | |
2138 | ||
2139 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2140 | struct btrfs_balance_item *bi, | |
2141 | struct btrfs_disk_balance_args *ba) | |
2142 | { | |
2143 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2144 | } | |
2145 | ||
2146 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2147 | struct btrfs_balance_item *bi, | |
2148 | struct btrfs_disk_balance_args *ba) | |
2149 | { | |
2150 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2151 | } | |
2152 | ||
2153 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2154 | struct btrfs_balance_item *bi, | |
2155 | struct btrfs_disk_balance_args *ba) | |
2156 | { | |
2157 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2158 | } | |
2159 | ||
2160 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2161 | struct btrfs_balance_item *bi, | |
2162 | struct btrfs_disk_balance_args *ba) | |
2163 | { | |
2164 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2165 | } | |
2166 | ||
2167 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2168 | struct btrfs_balance_item *bi, | |
2169 | struct btrfs_disk_balance_args *ba) | |
2170 | { | |
2171 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2172 | } | |
2173 | ||
2174 | static inline void | |
2175 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2176 | struct btrfs_disk_balance_args *disk) | |
2177 | { | |
2178 | memset(cpu, 0, sizeof(*cpu)); | |
2179 | ||
2180 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2181 | cpu->usage = le64_to_cpu(disk->usage); | |
2182 | cpu->devid = le64_to_cpu(disk->devid); | |
2183 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2184 | cpu->pend = le64_to_cpu(disk->pend); | |
2185 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2186 | cpu->vend = le64_to_cpu(disk->vend); | |
2187 | cpu->target = le64_to_cpu(disk->target); | |
2188 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2189 | cpu->limit = le64_to_cpu(disk->limit); |
0940ebf6 ID |
2190 | } |
2191 | ||
2192 | static inline void | |
2193 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2194 | struct btrfs_balance_args *cpu) | |
2195 | { | |
2196 | memset(disk, 0, sizeof(*disk)); | |
2197 | ||
2198 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2199 | disk->usage = cpu_to_le64(cpu->usage); | |
2200 | disk->devid = cpu_to_le64(cpu->devid); | |
2201 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2202 | disk->pend = cpu_to_le64(cpu->pend); | |
2203 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2204 | disk->vend = cpu_to_le64(cpu->vend); | |
2205 | disk->target = cpu_to_le64(cpu->target); | |
2206 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2207 | disk->limit = cpu_to_le64(cpu->limit); |
0940ebf6 ID |
2208 | } |
2209 | ||
2210 | /* struct btrfs_super_block */ | |
db94535d | 2211 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2212 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2213 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2214 | generation, 64); | |
2215 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2216 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2217 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2218 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2219 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2220 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2221 | root_level, 8); | |
0b86a832 CM |
2222 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2223 | chunk_root, 64); | |
2224 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2225 | chunk_root_level, 8); |
2226 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2227 | log_root, 64); | |
c3027eb5 CM |
2228 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2229 | log_root_transid, 64); | |
e02119d5 CM |
2230 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2231 | log_root_level, 8); | |
db94535d CM |
2232 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2233 | total_bytes, 64); | |
2234 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2235 | bytes_used, 64); | |
5f39d397 CM |
2236 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2237 | sectorsize, 32); | |
2238 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2239 | nodesize, 32); | |
87ee04eb CM |
2240 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2241 | stripesize, 32); | |
5f39d397 CM |
2242 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2243 | root_dir_objectid, 64); | |
8a4b83cc CM |
2244 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2245 | num_devices, 64); | |
f2b636e8 JB |
2246 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2247 | compat_flags, 64); | |
2248 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2249 | compat_ro_flags, 64); |
f2b636e8 JB |
2250 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2251 | incompat_flags, 64); | |
607d432d JB |
2252 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2253 | csum_type, 16); | |
0af3d00b JB |
2254 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2255 | cache_generation, 64); | |
3cae210f | 2256 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2257 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2258 | uuid_tree_generation, 64); | |
607d432d JB |
2259 | |
2260 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2261 | { | |
1104a885 DS |
2262 | u16 t = btrfs_super_csum_type(s); |
2263 | /* | |
2264 | * csum type is validated at mount time | |
2265 | */ | |
607d432d JB |
2266 | return btrfs_csum_sizes[t]; |
2267 | } | |
2e635a27 | 2268 | |
5f39d397 | 2269 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2270 | { |
5f39d397 | 2271 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2272 | } |
2273 | ||
5f39d397 CM |
2274 | /* struct btrfs_file_extent_item */ |
2275 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2276 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2277 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2278 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2279 | struct btrfs_file_extent_item, offset, 64); | |
2280 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2281 | struct btrfs_file_extent_item, generation, 64); | |
2282 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2283 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2284 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2285 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2286 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2287 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2288 | |
d397712b CM |
2289 | static inline unsigned long |
2290 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2291 | { |
7ec20afb | 2292 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2293 | } |
2294 | ||
2295 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2296 | { | |
7ec20afb | 2297 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2298 | } |
2299 | ||
db94535d CM |
2300 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2301 | disk_bytenr, 64); | |
5f39d397 CM |
2302 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2303 | generation, 64); | |
db94535d CM |
2304 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2305 | disk_num_bytes, 64); | |
5f39d397 CM |
2306 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2307 | offset, 64); | |
db94535d CM |
2308 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2309 | num_bytes, 64); | |
c8b97818 CM |
2310 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2311 | ram_bytes, 64); | |
2312 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2313 | compression, 8); | |
2314 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2315 | encryption, 8); | |
2316 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2317 | other_encoding, 16); | |
2318 | ||
c8b97818 CM |
2319 | /* |
2320 | * this returns the number of bytes used by the item on disk, minus the | |
2321 | * size of any extent headers. If a file is compressed on disk, this is | |
2322 | * the compressed size | |
2323 | */ | |
2324 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2325 | struct btrfs_item *e) | |
2326 | { | |
7ec20afb | 2327 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2328 | } |
9f5fae2f | 2329 | |
514ac8ad CM |
2330 | /* this returns the number of file bytes represented by the inline item. |
2331 | * If an item is compressed, this is the uncompressed size | |
2332 | */ | |
2333 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2334 | int slot, | |
2335 | struct btrfs_file_extent_item *fi) | |
2336 | { | |
2337 | struct btrfs_map_token token; | |
2338 | ||
2339 | btrfs_init_map_token(&token); | |
2340 | /* | |
2341 | * return the space used on disk if this item isn't | |
2342 | * compressed or encoded | |
2343 | */ | |
2344 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && | |
2345 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && | |
2346 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { | |
2347 | return btrfs_file_extent_inline_item_len(eb, | |
2348 | btrfs_item_nr(slot)); | |
2349 | } | |
2350 | ||
2351 | /* otherwise use the ram bytes field */ | |
2352 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); | |
2353 | } | |
2354 | ||
2355 | ||
733f4fbb SB |
2356 | /* btrfs_dev_stats_item */ |
2357 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
2358 | struct btrfs_dev_stats_item *ptr, | |
2359 | int index) | |
2360 | { | |
2361 | u64 val; | |
2362 | ||
2363 | read_extent_buffer(eb, &val, | |
2364 | offsetof(struct btrfs_dev_stats_item, values) + | |
2365 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2366 | sizeof(val)); | |
2367 | return val; | |
2368 | } | |
2369 | ||
2370 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2371 | struct btrfs_dev_stats_item *ptr, | |
2372 | int index, u64 val) | |
2373 | { | |
2374 | write_extent_buffer(eb, &val, | |
2375 | offsetof(struct btrfs_dev_stats_item, values) + | |
2376 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2377 | sizeof(val)); | |
2378 | } | |
2379 | ||
630dc772 AJ |
2380 | /* btrfs_qgroup_status_item */ |
2381 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2382 | generation, 64); | |
2383 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2384 | version, 64); | |
2385 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2386 | flags, 64); | |
2f232036 JS |
2387 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2388 | rescan, 64); | |
630dc772 AJ |
2389 | |
2390 | /* btrfs_qgroup_info_item */ | |
2391 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2392 | generation, 64); | |
2393 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2394 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2395 | rfer_cmpr, 64); | |
2396 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2397 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2398 | excl_cmpr, 64); | |
2399 | ||
2400 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2401 | struct btrfs_qgroup_info_item, generation, 64); | |
2402 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2403 | rfer, 64); | |
2404 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2405 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2406 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2407 | excl, 64); | |
2408 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2409 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2410 | ||
2411 | /* btrfs_qgroup_limit_item */ | |
2412 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2413 | flags, 64); | |
2414 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2415 | max_rfer, 64); | |
2416 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2417 | max_excl, 64); | |
2418 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2419 | rsv_rfer, 64); | |
2420 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2421 | rsv_excl, 64); | |
2422 | ||
a2bff640 SB |
2423 | /* btrfs_dev_replace_item */ |
2424 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2425 | struct btrfs_dev_replace_item, src_devid, 64); | |
2426 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2427 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2428 | 64); | |
2429 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2430 | replace_state, 64); | |
2431 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2432 | time_started, 64); | |
2433 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2434 | time_stopped, 64); | |
2435 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2436 | num_write_errors, 64); | |
2437 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2438 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2439 | 64); | |
2440 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2441 | cursor_left, 64); | |
2442 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2443 | cursor_right, 64); | |
2444 | ||
2445 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2446 | struct btrfs_dev_replace_item, src_devid, 64); | |
2447 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2448 | struct btrfs_dev_replace_item, | |
2449 | cont_reading_from_srcdev_mode, 64); | |
2450 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2451 | struct btrfs_dev_replace_item, replace_state, 64); | |
2452 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2453 | struct btrfs_dev_replace_item, time_started, 64); | |
2454 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2455 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2456 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2457 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2458 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2459 | struct btrfs_dev_replace_item, | |
2460 | num_uncorrectable_read_errors, 64); | |
2461 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2462 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2463 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2464 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2465 | ||
815745cf | 2466 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
e20d96d6 CM |
2467 | { |
2468 | return sb->s_fs_info; | |
2469 | } | |
2470 | ||
4beb1b8b CM |
2471 | /* helper function to cast into the data area of the leaf. */ |
2472 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2473 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2474 | btrfs_item_offset_nr(leaf, slot))) |
2475 | ||
2476 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2477 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2478 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2479 | |
67377734 JB |
2480 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2481 | { | |
2482 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2483 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2484 | } | |
2485 | ||
3b16a4e3 JB |
2486 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2487 | { | |
c62d2555 | 2488 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2489 | } |
2490 | ||
b18c6685 | 2491 | /* extent-tree.c */ |
28f75a0e CM |
2492 | |
2493 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_root *root, u64 csum_bytes); | |
2494 | ||
16cdcec7 | 2495 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 2496 | unsigned num_items) |
16cdcec7 | 2497 | { |
0138b6fe | 2498 | return root->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2499 | } |
2500 | ||
2501 | /* | |
2502 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2503 | * COW. | |
2504 | */ | |
2505 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, | |
2506 | unsigned num_items) | |
2507 | { | |
707e8a07 | 2508 | return root->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2509 | } |
2510 | ||
1be41b78 JB |
2511 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
2512 | struct btrfs_root *root); | |
0a2b2a84 JB |
2513 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
2514 | struct btrfs_root *root); | |
9cfa3e34 FM |
2515 | void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, |
2516 | const u64 start); | |
2517 | void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); | |
f78c436c FM |
2518 | bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
2519 | void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); | |
2520 | void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg); | |
fa9c0d79 | 2521 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
2522 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2523 | struct btrfs_root *root, unsigned long count); | |
a79b7d4b | 2524 | int btrfs_async_run_delayed_refs(struct btrfs_root *root, |
31b9655f | 2525 | unsigned long count, u64 transid, int wait); |
1a4ed8fd | 2526 | int btrfs_lookup_data_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
2527 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2528 | struct btrfs_root *root, u64 bytenr, | |
3173a18f | 2529 | u64 offset, int metadata, u64 *refs, u64 *flags); |
11833d66 YZ |
2530 | int btrfs_pin_extent(struct btrfs_root *root, |
2531 | u64 bytenr, u64 num, int reserved); | |
dcfac415 | 2532 | int btrfs_pin_extent_for_log_replay(struct btrfs_root *root, |
e688b725 | 2533 | u64 bytenr, u64 num_bytes); |
8c2a1a30 JB |
2534 | int btrfs_exclude_logged_extents(struct btrfs_root *root, |
2535 | struct extent_buffer *eb); | |
80ff3856 | 2536 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2537 | struct btrfs_root *root, |
2538 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
2539 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2540 | struct btrfs_fs_info *info, | |
2541 | u64 bytenr); | |
758f2dfc | 2542 | void btrfs_get_block_group(struct btrfs_block_group_cache *cache); |
5d4f98a2 | 2543 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
6ab0a202 | 2544 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
4d75f8a9 DS |
2545 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
2546 | struct btrfs_root *root, u64 parent, | |
2547 | u64 root_objectid, | |
5d4f98a2 | 2548 | struct btrfs_disk_key *key, int level, |
5581a51a | 2549 | u64 hint, u64 empty_size); |
f0486c68 YZ |
2550 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2551 | struct btrfs_root *root, | |
2552 | struct extent_buffer *buf, | |
5581a51a | 2553 | u64 parent, int last_ref); |
5d4f98a2 YZ |
2554 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
2555 | struct btrfs_root *root, | |
2556 | u64 root_objectid, u64 owner, | |
5846a3c2 QW |
2557 | u64 offset, u64 ram_bytes, |
2558 | struct btrfs_key *ins); | |
5d4f98a2 YZ |
2559 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
2560 | struct btrfs_root *root, | |
2561 | u64 root_objectid, u64 owner, u64 offset, | |
2562 | struct btrfs_key *ins); | |
00361589 JB |
2563 | int btrfs_reserve_extent(struct btrfs_root *root, u64 num_bytes, |
2564 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, | |
e570fd27 | 2565 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2566 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2567 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2568 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2569 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 YZ |
2570 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2571 | struct btrfs_root *root, | |
2572 | u64 bytenr, u64 num_bytes, u64 flags, | |
b1c79e09 | 2573 | int level, int is_data); |
31840ae1 ZY |
2574 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2575 | struct btrfs_root *root, | |
66d7e7f0 | 2576 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
b06c4bf5 | 2577 | u64 owner, u64 offset); |
5d4f98a2 | 2578 | |
e570fd27 MX |
2579 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len, |
2580 | int delalloc); | |
e688b725 CM |
2581 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
2582 | u64 start, u64 len); | |
143bede5 JM |
2583 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
2584 | struct btrfs_root *root); | |
ccd467d6 | 2585 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 2586 | struct btrfs_root *root); |
b18c6685 | 2587 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
2588 | struct btrfs_root *root, |
2589 | u64 bytenr, u64 num_bytes, u64 parent, | |
b06c4bf5 | 2590 | u64 root_objectid, u64 owner, u64 offset); |
5d4f98a2 | 2591 | |
1bbc621e CM |
2592 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans, |
2593 | struct btrfs_root *root); | |
9078a3e1 CM |
2594 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2595 | struct btrfs_root *root); | |
dcdf7f6d JB |
2596 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
2597 | struct btrfs_root *root); | |
d2fb3437 | 2598 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
2599 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
2600 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 2601 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
2602 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2603 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 2604 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2605 | u64 size); |
8eab77ff | 2606 | struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( |
7fd01182 FM |
2607 | struct btrfs_fs_info *fs_info, |
2608 | const u64 chunk_offset); | |
1a40e23b | 2609 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
04216820 FM |
2610 | struct btrfs_root *root, u64 group_start, |
2611 | struct extent_map *em); | |
47ab2a6c | 2612 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
e33e17ee JM |
2613 | void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); |
2614 | void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); | |
ea658bad JB |
2615 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
2616 | struct btrfs_root *root); | |
6d07bcec | 2617 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
4184ea7f | 2618 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
2619 | |
2620 | enum btrfs_reserve_flush_enum { | |
2621 | /* If we are in the transaction, we can't flush anything.*/ | |
2622 | BTRFS_RESERVE_NO_FLUSH, | |
2623 | /* | |
2624 | * Flushing delalloc may cause deadlock somewhere, in this | |
2625 | * case, use FLUSH LIMIT | |
2626 | */ | |
2627 | BTRFS_RESERVE_FLUSH_LIMIT, | |
2628 | BTRFS_RESERVE_FLUSH_ALL, | |
2629 | }; | |
2630 | ||
f376df2b JB |
2631 | enum btrfs_flush_state { |
2632 | FLUSH_DELAYED_ITEMS_NR = 1, | |
2633 | FLUSH_DELAYED_ITEMS = 2, | |
2634 | FLUSH_DELALLOC = 3, | |
2635 | FLUSH_DELALLOC_WAIT = 4, | |
2636 | ALLOC_CHUNK = 5, | |
2637 | COMMIT_TRANS = 6, | |
2638 | }; | |
2639 | ||
7cf5b976 | 2640 | int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len); |
4ceff079 | 2641 | int btrfs_alloc_data_chunk_ondemand(struct inode *inode, u64 bytes); |
7cf5b976 | 2642 | void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len); |
51773bec QW |
2643 | void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, |
2644 | u64 len); | |
a22285a6 YZ |
2645 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2646 | struct btrfs_root *root); | |
4fbcdf66 | 2647 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
d68fc57b YZ |
2648 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
2649 | struct inode *inode); | |
2650 | void btrfs_orphan_release_metadata(struct inode *inode); | |
d5c12070 MX |
2651 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2652 | struct btrfs_block_rsv *rsv, | |
2653 | int nitems, | |
ee3441b4 | 2654 | u64 *qgroup_reserved, bool use_global_rsv); |
d5c12070 MX |
2655 | void btrfs_subvolume_release_metadata(struct btrfs_root *root, |
2656 | struct btrfs_block_rsv *rsv, | |
2657 | u64 qgroup_reserved); | |
0ca1f7ce YZ |
2658 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
2659 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
7cf5b976 QW |
2660 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 start, u64 len); |
2661 | void btrfs_delalloc_release_space(struct inode *inode, u64 start, u64 len); | |
66d8f3dd MX |
2662 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
2663 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, | |
2664 | unsigned short type); | |
f0486c68 YZ |
2665 | void btrfs_free_block_rsv(struct btrfs_root *root, |
2666 | struct btrfs_block_rsv *rsv); | |
cdfb080e | 2667 | void __btrfs_free_block_rsv(struct btrfs_block_rsv *rsv); |
4a92b1b8 | 2668 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
2669 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
2670 | enum btrfs_reserve_flush_enum flush); | |
4a92b1b8 | 2671 | int btrfs_block_rsv_check(struct btrfs_root *root, |
36ba022a JB |
2672 | struct btrfs_block_rsv *block_rsv, int min_factor); |
2673 | int btrfs_block_rsv_refill(struct btrfs_root *root, | |
08e007d2 MX |
2674 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
2675 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 | 2676 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
25d609f8 JB |
2677 | struct btrfs_block_rsv *dst_rsv, u64 num_bytes, |
2678 | int update_size); | |
d52be818 JB |
2679 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
2680 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
2681 | int min_factor); | |
f0486c68 YZ |
2682 | void btrfs_block_rsv_release(struct btrfs_root *root, |
2683 | struct btrfs_block_rsv *block_rsv, | |
2684 | u64 num_bytes); | |
868f401a | 2685 | int btrfs_inc_block_group_ro(struct btrfs_root *root, |
f0486c68 | 2686 | struct btrfs_block_group_cache *cache); |
868f401a | 2687 | void btrfs_dec_block_group_ro(struct btrfs_root *root, |
143bede5 | 2688 | struct btrfs_block_group_cache *cache); |
0af3d00b | 2689 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2690 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 2691 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
2692 | u64 start, u64 end); | |
1edb647b FM |
2693 | int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr, |
2694 | u64 num_bytes, u64 *actual_bytes); | |
c87f08ca CM |
2695 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2696 | struct btrfs_root *root, u64 type); | |
f7039b1d | 2697 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 2698 | |
c59021f8 | 2699 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2700 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2701 | struct btrfs_fs_info *fs_info); | |
31e50229 | 2702 | int __get_raid_index(u64 flags); |
9ea24bbe FM |
2703 | int btrfs_start_write_no_snapshoting(struct btrfs_root *root); |
2704 | void btrfs_end_write_no_snapshoting(struct btrfs_root *root); | |
0bc19f90 | 2705 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
39c2d7fa FM |
2706 | void check_system_chunk(struct btrfs_trans_handle *trans, |
2707 | struct btrfs_root *root, | |
4617ea3a | 2708 | const u64 type); |
a5ed9182 OS |
2709 | u64 add_new_free_space(struct btrfs_block_group_cache *block_group, |
2710 | struct btrfs_fs_info *info, u64 start, u64 end); | |
2711 | ||
dee26a9f | 2712 | /* ctree.c */ |
5d4f98a2 YZ |
2713 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
2714 | int level, int *slot); | |
2715 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
2716 | int btrfs_previous_item(struct btrfs_root *root, |
2717 | struct btrfs_path *path, u64 min_objectid, | |
2718 | int type); | |
ade2e0b3 WS |
2719 | int btrfs_previous_extent_item(struct btrfs_root *root, |
2720 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
2721 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
2722 | struct btrfs_path *path, | |
143bede5 | 2723 | struct btrfs_key *new_key); |
925baedd CM |
2724 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2725 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2726 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 2727 | struct btrfs_key *key, int lowest_level, |
de78b51a | 2728 | u64 min_trans); |
3f157a2f | 2729 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 2730 | struct btrfs_path *path, |
3f157a2f | 2731 | u64 min_trans); |
7069830a AB |
2732 | enum btrfs_compare_tree_result { |
2733 | BTRFS_COMPARE_TREE_NEW, | |
2734 | BTRFS_COMPARE_TREE_DELETED, | |
2735 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 2736 | BTRFS_COMPARE_TREE_SAME, |
7069830a AB |
2737 | }; |
2738 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, | |
2739 | struct btrfs_root *right_root, | |
2740 | struct btrfs_path *left_path, | |
2741 | struct btrfs_path *right_path, | |
2742 | struct btrfs_key *key, | |
2743 | enum btrfs_compare_tree_result result, | |
2744 | void *ctx); | |
2745 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
2746 | struct btrfs_root *right_root, | |
2747 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
2748 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2749 | struct btrfs_root *root, struct extent_buffer *buf, | |
2750 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2751 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2752 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2753 | struct btrfs_root *root, | |
2754 | struct extent_buffer *buf, | |
2755 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2756 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2757 | struct extent_buffer *buf); | |
4b90c680 | 2758 | void btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 2759 | u32 data_size); |
afe5fea7 | 2760 | void btrfs_truncate_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 2761 | u32 new_size, int from_end); |
459931ec CM |
2762 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2763 | struct btrfs_root *root, | |
2764 | struct btrfs_path *path, | |
2765 | struct btrfs_key *new_key, | |
2766 | unsigned long split_offset); | |
ad48fd75 YZ |
2767 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2768 | struct btrfs_root *root, | |
2769 | struct btrfs_path *path, | |
2770 | struct btrfs_key *new_key); | |
e33d5c3d KN |
2771 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
2772 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
e089f05c CM |
2773 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
2774 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
2775 | ins_len, int cow); | |
5d9e75c4 JS |
2776 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
2777 | struct btrfs_path *p, u64 time_seq); | |
2f38b3e1 AJ |
2778 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
2779 | struct btrfs_key *key, struct btrfs_path *p, | |
2780 | int find_higher, int return_any); | |
6702ed49 | 2781 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2782 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 2783 | int start_slot, u64 *last_ret, |
a6b6e75e | 2784 | struct btrfs_key *progress); |
b3b4aa74 | 2785 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2786 | struct btrfs_path *btrfs_alloc_path(void); |
2787 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2788 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 2789 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 2790 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
2791 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2792 | ||
85e21bac CM |
2793 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2794 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2795 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2796 | struct btrfs_root *root, | |
2797 | struct btrfs_path *path) | |
2798 | { | |
2799 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2800 | } | |
2801 | ||
afe5fea7 | 2802 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 JM |
2803 | struct btrfs_key *cpu_key, u32 *data_size, |
2804 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
2805 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2806 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2807 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2808 | struct btrfs_root *root, | |
2809 | struct btrfs_path *path, | |
2810 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
2811 | ||
2812 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2813 | struct btrfs_root *root, | |
2814 | struct btrfs_path *path, | |
2815 | struct btrfs_key *key, | |
2816 | u32 data_size) | |
2817 | { | |
2818 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2819 | } | |
2820 | ||
234b63a0 | 2821 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 2822 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2823 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2824 | u64 time_seq); | |
1c8f52a5 AB |
2825 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2826 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2827 | { |
2828 | ++p->slots[0]; | |
2829 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2830 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2831 | return 0; |
2832 | } | |
1c8f52a5 AB |
2833 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2834 | { | |
2835 | return btrfs_next_old_item(root, p, 0); | |
2836 | } | |
5f39d397 | 2837 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
2c536799 JM |
2838 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
2839 | struct btrfs_block_rsv *block_rsv, | |
2840 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
2841 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2842 | struct btrfs_root *root, | |
2843 | struct extent_buffer *node, | |
2844 | struct extent_buffer *parent); | |
7841cb28 DS |
2845 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2846 | { | |
2847 | /* | |
2848 | * Get synced with close_ctree() | |
2849 | */ | |
2850 | smp_mb(); | |
2851 | return fs_info->closing; | |
2852 | } | |
babbf170 MX |
2853 | |
2854 | /* | |
2855 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
2856 | * anything except sleeping. This function is used to check the status of | |
2857 | * the fs. | |
2858 | */ | |
2859 | static inline int btrfs_need_cleaner_sleep(struct btrfs_root *root) | |
2860 | { | |
2861 | return (root->fs_info->sb->s_flags & MS_RDONLY || | |
2862 | btrfs_fs_closing(root->fs_info)); | |
2863 | } | |
2864 | ||
6c41761f DS |
2865 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
2866 | { | |
837d5b6e | 2867 | kfree(fs_info->balance_ctl); |
6c41761f DS |
2868 | kfree(fs_info->delayed_root); |
2869 | kfree(fs_info->extent_root); | |
2870 | kfree(fs_info->tree_root); | |
2871 | kfree(fs_info->chunk_root); | |
2872 | kfree(fs_info->dev_root); | |
2873 | kfree(fs_info->csum_root); | |
bcef60f2 | 2874 | kfree(fs_info->quota_root); |
d8f98039 | 2875 | kfree(fs_info->uuid_root); |
70f6d82e | 2876 | kfree(fs_info->free_space_root); |
6c41761f DS |
2877 | kfree(fs_info->super_copy); |
2878 | kfree(fs_info->super_for_commit); | |
f667aef6 | 2879 | security_free_mnt_opts(&fs_info->security_opts); |
6c41761f DS |
2880 | kfree(fs_info); |
2881 | } | |
7841cb28 | 2882 | |
097b8a7c JS |
2883 | /* tree mod log functions from ctree.c */ |
2884 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2885 | struct seq_list *elem); | |
2886 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2887 | struct seq_list *elem); | |
5b6602e7 | 2888 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 2889 | |
dee26a9f | 2890 | /* root-item.c */ |
0660b5af CM |
2891 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
2892 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
2893 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2894 | const char *name, int name_len); | |
2895 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
2896 | struct btrfs_root *tree_root, | |
2897 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 2898 | const char *name, int name_len); |
e089f05c CM |
2899 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2900 | struct btrfs_key *key); | |
2901 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2902 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2903 | *item); | |
b45a9d8b JM |
2904 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
2905 | struct btrfs_root *root, | |
2906 | struct btrfs_key *key, | |
2907 | struct btrfs_root_item *item); | |
cb517eab MX |
2908 | int btrfs_find_root(struct btrfs_root *root, struct btrfs_key *search_key, |
2909 | struct btrfs_path *path, struct btrfs_root_item *root_item, | |
2910 | struct btrfs_key *root_key); | |
76dda93c | 2911 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
2912 | void btrfs_set_root_node(struct btrfs_root_item *item, |
2913 | struct extent_buffer *node); | |
08fe4db1 | 2914 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
2915 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
2916 | struct btrfs_root *root); | |
08fe4db1 | 2917 | |
07b30a49 SB |
2918 | /* uuid-tree.c */ |
2919 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, | |
2920 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
2921 | u64 subid); | |
2922 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, | |
2923 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
2924 | u64 subid); | |
70f80175 SB |
2925 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
2926 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
2927 | u64)); | |
07b30a49 | 2928 | |
dee26a9f | 2929 | /* dir-item.c */ |
9c52057c CM |
2930 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
2931 | const char *name, int name_len); | |
d397712b CM |
2932 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
2933 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 2934 | int name_len, struct inode *dir, |
aec7477b | 2935 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
2936 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
2937 | struct btrfs_root *root, | |
2938 | struct btrfs_path *path, u64 dir, | |
2939 | const char *name, int name_len, | |
2940 | int mod); | |
2941 | struct btrfs_dir_item * | |
2942 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
2943 | struct btrfs_root *root, | |
2944 | struct btrfs_path *path, u64 dir, | |
2945 | u64 objectid, const char *name, int name_len, | |
2946 | int mod); | |
4df27c4d YZ |
2947 | struct btrfs_dir_item * |
2948 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
2949 | struct btrfs_path *path, u64 dirid, | |
2950 | const char *name, int name_len); | |
7e38180e CM |
2951 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
2952 | struct btrfs_root *root, | |
2953 | struct btrfs_path *path, | |
2954 | struct btrfs_dir_item *di); | |
5103e947 | 2955 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
2956 | struct btrfs_root *root, |
2957 | struct btrfs_path *path, u64 objectid, | |
2958 | const char *name, u16 name_len, | |
2959 | const void *data, u16 data_len); | |
5103e947 JB |
2960 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
2961 | struct btrfs_root *root, | |
2962 | struct btrfs_path *path, u64 dir, | |
2963 | const char *name, u16 name_len, | |
2964 | int mod); | |
22a94d44 JB |
2965 | int verify_dir_item(struct btrfs_root *root, |
2966 | struct extent_buffer *leaf, | |
2967 | struct btrfs_dir_item *dir_item); | |
5f5bc6b1 FM |
2968 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
2969 | struct btrfs_path *path, | |
2970 | const char *name, | |
2971 | int name_len); | |
7b128766 JB |
2972 | |
2973 | /* orphan.c */ | |
2974 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
2975 | struct btrfs_root *root, u64 offset); | |
2976 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
2977 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 2978 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 2979 | |
dee26a9f | 2980 | /* inode-item.c */ |
3954401f CM |
2981 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
2982 | struct btrfs_root *root, | |
2983 | const char *name, int name_len, | |
aec7477b | 2984 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
2985 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
2986 | struct btrfs_root *root, | |
2987 | const char *name, int name_len, | |
aec7477b | 2988 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
2989 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
2990 | struct btrfs_root *root, | |
2991 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 2992 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
2993 | *root, struct btrfs_path *path, |
2994 | struct btrfs_key *location, int mod); | |
dee26a9f | 2995 | |
f186373f MF |
2996 | struct btrfs_inode_extref * |
2997 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
2998 | struct btrfs_root *root, | |
2999 | struct btrfs_path *path, | |
3000 | const char *name, int name_len, | |
3001 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3002 | int cow); | |
3003 | ||
3004 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, | |
3005 | u64 ref_objectid, const char *name, | |
3006 | int name_len, | |
3007 | struct btrfs_inode_extref **extref_ret); | |
3008 | ||
dee26a9f | 3009 | /* file-item.c */ |
facc8a22 | 3010 | struct btrfs_dio_private; |
459931ec CM |
3011 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
3012 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 3013 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3014 | struct bio *bio, u32 *dst); |
4b46fce2 | 3015 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
23ea8e5a | 3016 | struct bio *bio, u64 logical_offset); |
b18c6685 | 3017 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3018 | struct btrfs_root *root, |
3019 | u64 objectid, u64 pos, | |
3020 | u64 disk_offset, u64 disk_num_bytes, | |
3021 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3022 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3023 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3024 | struct btrfs_root *root, | |
3025 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3026 | u64 bytenr, int mod); |
065631f6 | 3027 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3028 | struct btrfs_root *root, |
e6dcd2dc | 3029 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 3030 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3031 | struct bio *bio, u64 file_start, int contig); |
a2de733c AJ |
3032 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3033 | struct list_head *list, int search_commit); | |
7ffbb598 FM |
3034 | void btrfs_extent_item_to_extent_map(struct inode *inode, |
3035 | const struct btrfs_path *path, | |
3036 | struct btrfs_file_extent_item *fi, | |
3037 | const bool new_inline, | |
3038 | struct extent_map *em); | |
3039 | ||
39279cc3 | 3040 | /* inode.c */ |
8ccf6f19 MX |
3041 | struct btrfs_delalloc_work { |
3042 | struct inode *inode; | |
8ccf6f19 MX |
3043 | int delay_iput; |
3044 | struct completion completion; | |
3045 | struct list_head list; | |
3046 | struct btrfs_work work; | |
3047 | }; | |
3048 | ||
3049 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, | |
651d494a | 3050 | int delay_iput); |
8ccf6f19 MX |
3051 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); |
3052 | ||
b2675157 JB |
3053 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
3054 | size_t pg_offset, u64 start, u64 len, | |
3055 | int create); | |
00361589 | 3056 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3057 | u64 *orig_start, u64 *orig_block_len, |
3058 | u64 *ram_bytes); | |
4881ee5a CM |
3059 | |
3060 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3061 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3062 | #define ClearPageChecked ClearPageFsMisc |
3063 | #define SetPageChecked SetPageFsMisc | |
3064 | #define PageChecked PageFsMisc | |
3065 | #endif | |
3066 | ||
b6973aa6 LZ |
3067 | /* This forces readahead on a given range of bytes in an inode */ |
3068 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3069 | struct file_ra_state *ra, struct file *file, | |
3070 | pgoff_t offset, unsigned long req_size) | |
3071 | { | |
3072 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3073 | } | |
3074 | ||
3de4586c CM |
3075 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
3076 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
3077 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3078 | struct btrfs_root *root, | |
3079 | struct inode *dir, struct inode *inode, | |
3080 | const char *name, int name_len); | |
3081 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
3082 | struct inode *parent_inode, struct inode *inode, | |
3083 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
3084 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3085 | struct btrfs_root *root, | |
3086 | struct inode *dir, u64 objectid, | |
3087 | const char *name, int name_len); | |
9703fefe | 3088 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
2aaa6655 | 3089 | int front); |
e02119d5 CM |
3090 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3091 | struct btrfs_root *root, | |
3092 | struct inode *inode, u64 new_size, | |
3093 | u32 min_type); | |
3094 | ||
24bbcf04 | 3095 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
6c255e67 MX |
3096 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
3097 | int nr); | |
2ac55d41 JB |
3098 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
3099 | struct extent_state **cached_state); | |
d2fb3437 | 3100 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3101 | struct btrfs_root *new_root, |
3102 | struct btrfs_root *parent_root, | |
3103 | u64 new_dirid); | |
64a16701 DW |
3104 | int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, |
3105 | size_t size, struct bio *bio, | |
3106 | unsigned long bio_flags); | |
c2ec175c | 3107 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 3108 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3109 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3110 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3111 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3112 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3113 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3114 | int btrfs_init_cachep(void); |
3115 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3116 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3117 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3118 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 3119 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 3120 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
3121 | int create); |
3122 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
3123 | struct btrfs_root *root, | |
3124 | struct inode *inode); | |
be6aef60 JB |
3125 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3126 | struct btrfs_root *root, struct inode *inode); | |
5b21f2ed | 3127 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
66b4ffd1 | 3128 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3129 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3130 | struct btrfs_root *root); | |
a41ad394 | 3131 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3132 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
3133 | void btrfs_add_delayed_iput(struct inode *inode); |
3134 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
3135 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3136 | u64 start, u64 num_bytes, u64 min_size, | |
3137 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3138 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3139 | struct btrfs_trans_handle *trans, int mode, | |
3140 | u64 start, u64 num_bytes, u64 min_size, | |
3141 | loff_t actual_len, u64 *alloc_hint); | |
b38ef71c | 3142 | int btrfs_inode_check_errors(struct inode *inode); |
82d339d9 | 3143 | extern const struct dentry_operations btrfs_dentry_operations; |
6a3891c5 JB |
3144 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
3145 | void btrfs_test_inode_set_ops(struct inode *inode); | |
3146 | #endif | |
f46b5a66 CH |
3147 | |
3148 | /* ioctl.c */ | |
3149 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3150 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
d5131b65 | 3151 | int btrfs_ioctl_get_supported_features(void __user *arg); |
6cbff00f CH |
3152 | void btrfs_update_iflags(struct inode *inode); |
3153 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
dd5f9615 | 3154 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3155 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3156 | struct btrfs_ioctl_defrag_range_args *range, | |
3157 | u64 newer_than, unsigned long max_pages); | |
5af3e8cc SB |
3158 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3159 | struct btrfs_ioctl_space_info *space); | |
35a3621b SB |
3160 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
3161 | struct btrfs_ioctl_balance_args *bargs); | |
2b3909f8 DW |
3162 | ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen, |
3163 | struct file *dst_file, u64 dst_loff); | |
35a3621b | 3164 | |
39279cc3 | 3165 | /* file.c */ |
9247f317 MX |
3166 | int btrfs_auto_defrag_init(void); |
3167 | void btrfs_auto_defrag_exit(void); | |
4cb5300b CM |
3168 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
3169 | struct inode *inode); | |
3170 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
26176e7c | 3171 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3172 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
7014cdb4 JB |
3173 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
3174 | int skip_pinned); | |
828c0950 | 3175 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3176 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3177 | struct btrfs_root *root, struct inode *inode, | |
3178 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3179 | u64 *drop_end, int drop_cache, |
3180 | int replace_extent, | |
3181 | u32 extent_item_size, | |
3182 | int *key_inserted); | |
5dc562c5 JB |
3183 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3184 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3185 | u64 end, int drop_cache); |
d899e052 | 3186 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 3187 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 3188 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
3189 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, |
3190 | struct page **pages, size_t num_pages, | |
3191 | loff_t pos, size_t write_bytes, | |
3192 | struct extent_state **cached); | |
728404da | 3193 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
3db11b2e ZB |
3194 | ssize_t btrfs_copy_file_range(struct file *file_in, loff_t pos_in, |
3195 | struct file *file_out, loff_t pos_out, | |
3196 | size_t len, unsigned int flags); | |
04b38d60 CH |
3197 | int btrfs_clone_file_range(struct file *file_in, loff_t pos_in, |
3198 | struct file *file_out, loff_t pos_out, u64 len); | |
6bf13c0c | 3199 | |
6702ed49 CM |
3200 | /* tree-defrag.c */ |
3201 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3202 | struct btrfs_root *root); |
58176a96 JB |
3203 | |
3204 | /* sysfs.c */ | |
3205 | int btrfs_init_sysfs(void); | |
3206 | void btrfs_exit_sysfs(void); | |
96f3136e | 3207 | int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info); |
6618a59b | 3208 | void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info); |
58176a96 | 3209 | |
5103e947 JB |
3210 | /* xattr.c */ |
3211 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3212 | |
edbd8d4e | 3213 | /* super.c */ |
96da0919 QW |
3214 | int btrfs_parse_options(struct btrfs_root *root, char *options, |
3215 | unsigned long new_flags); | |
6bf13c0c | 3216 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 JP |
3217 | |
3218 | #ifdef CONFIG_PRINTK | |
3219 | __printf(2, 3) | |
c2cf52eb | 3220 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 JP |
3221 | #else |
3222 | static inline __printf(2, 3) | |
c2cf52eb | 3223 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
533574c6 JP |
3224 | { |
3225 | } | |
3226 | #endif | |
3227 | ||
c2cf52eb SK |
3228 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3229 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3230 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3231 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3232 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3233 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3234 | #define btrfs_err(fs_info, fmt, args...) \ | |
3235 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3236 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3237 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3238 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3239 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3240 | #define btrfs_info(fs_info, fmt, args...) \ | |
3241 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3242 | |
08a84e25 DS |
3243 | /* |
3244 | * Wrappers that use printk_in_rcu | |
3245 | */ | |
3246 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3247 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3248 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3249 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3250 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3251 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3252 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3253 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3254 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3255 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3256 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3257 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3258 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3259 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3260 | ||
24aa6b41 DS |
3261 | /* |
3262 | * Wrappers that use a ratelimited printk_in_rcu | |
3263 | */ | |
3264 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3265 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3266 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3267 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3268 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3269 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3270 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3271 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3272 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3273 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3274 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3275 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3276 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3277 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3278 | ||
1dd6d7ca DS |
3279 | /* |
3280 | * Wrappers that use a ratelimited printk | |
3281 | */ | |
3282 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3283 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3284 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3285 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3286 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3287 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3288 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3289 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3290 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3291 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3292 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3293 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3294 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3295 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3296 | #ifdef DEBUG |
c2cf52eb SK |
3297 | #define btrfs_debug(fs_info, fmt, args...) \ |
3298 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3299 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3300 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3301 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3302 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3303 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3304 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3305 | #else |
3306 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3307 | no_printk(KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3308 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3309 | no_printk(KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3310 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3311 | no_printk(KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3312 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3313 | no_printk(KERN_DEBUG fmt, ##args) | |
27a0dd61 | 3314 | #endif |
c2cf52eb | 3315 | |
08a84e25 DS |
3316 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3317 | do { \ | |
3318 | rcu_read_lock(); \ | |
3319 | btrfs_printk(fs_info, fmt, ##args); \ | |
3320 | rcu_read_unlock(); \ | |
3321 | } while (0) | |
3322 | ||
24aa6b41 DS |
3323 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3324 | do { \ | |
3325 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3326 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3327 | DEFAULT_RATELIMIT_BURST); \ | |
3328 | if (__ratelimit(&_rs)) \ | |
3329 | btrfs_printk(fs_info, fmt, ##args); \ | |
3330 | } while (0) | |
3331 | ||
3332 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3333 | do { \ | |
3334 | rcu_read_lock(); \ | |
3335 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3336 | rcu_read_unlock(); \ | |
3337 | } while (0) | |
3338 | ||
2e17c7c6 JB |
3339 | #ifdef CONFIG_BTRFS_ASSERT |
3340 | ||
c0d19e2b | 3341 | __cold |
2e17c7c6 JB |
3342 | static inline void assfail(char *expr, char *file, int line) |
3343 | { | |
efe120a0 | 3344 | pr_err("BTRFS: assertion failed: %s, file: %s, line: %d", |
2e17c7c6 JB |
3345 | expr, file, line); |
3346 | BUG(); | |
3347 | } | |
3348 | ||
3349 | #define ASSERT(expr) \ | |
3350 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3351 | #else | |
3352 | #define ASSERT(expr) ((void)0) | |
3353 | #endif | |
3354 | ||
533574c6 | 3355 | __printf(5, 6) |
c0d19e2b | 3356 | __cold |
34d97007 | 3357 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3358 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3359 | |
e33e17ee | 3360 | const char *btrfs_decode_error(int errno); |
533574c6 | 3361 | |
c0d19e2b | 3362 | __cold |
49b25e05 JM |
3363 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
3364 | struct btrfs_root *root, const char *function, | |
3365 | unsigned int line, int errno); | |
3366 | ||
c5f4ccb2 AJ |
3367 | /* |
3368 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3369 | * detected, that way the exact line number is reported. | |
3370 | */ | |
3371 | #define btrfs_abort_transaction(trans, root, errno) \ | |
3372 | do { \ | |
3373 | /* Report first abort since mount */ \ | |
3374 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
3375 | &((root)->fs_info->fs_state))) { \ | |
3376 | WARN(1, KERN_DEBUG \ | |
3377 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3378 | (errno)); \ | |
3379 | } \ | |
3380 | __btrfs_abort_transaction((trans), (root), __func__, \ | |
3381 | __LINE__, (errno)); \ | |
3382 | } while (0) | |
3383 | ||
3384 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3385 | do { \ | |
3386 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3387 | (errno), fmt, ##args); \ | |
3388 | } while (0) | |
3389 | ||
3390 | __printf(5, 6) | |
3391 | __cold | |
3392 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3393 | unsigned int line, int errno, const char *fmt, ...); | |
3394 | /* | |
3395 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3396 | * will panic(). Otherwise we BUG() here. | |
3397 | */ | |
3398 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3399 | do { \ | |
3400 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3401 | BUG(); \ | |
3402 | } while (0) | |
3403 | ||
3404 | ||
3405 | /* compatibility and incompatibility defines */ | |
3406 | ||
2b0ce2c2 MH |
3407 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3408 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3409 | ||
3410 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3411 | u64 flag) | |
3412 | { | |
3413 | struct btrfs_super_block *disk_super; | |
3414 | u64 features; | |
3415 | ||
3416 | disk_super = fs_info->super_copy; | |
3417 | features = btrfs_super_incompat_flags(disk_super); | |
3418 | if (!(features & flag)) { | |
ceda0864 MX |
3419 | spin_lock(&fs_info->super_lock); |
3420 | features = btrfs_super_incompat_flags(disk_super); | |
3421 | if (!(features & flag)) { | |
3422 | features |= flag; | |
3423 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3424 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3425 | flag); |
3426 | } | |
3427 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3428 | } |
3429 | } | |
3430 | ||
1abfbcdf OS |
3431 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
3432 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3433 | ||
3434 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
3435 | u64 flag) | |
3436 | { | |
3437 | struct btrfs_super_block *disk_super; | |
3438 | u64 features; | |
3439 | ||
3440 | disk_super = fs_info->super_copy; | |
3441 | features = btrfs_super_incompat_flags(disk_super); | |
3442 | if (features & flag) { | |
3443 | spin_lock(&fs_info->super_lock); | |
3444 | features = btrfs_super_incompat_flags(disk_super); | |
3445 | if (features & flag) { | |
3446 | features &= ~flag; | |
3447 | btrfs_set_super_incompat_flags(disk_super, features); | |
3448 | btrfs_info(fs_info, "clearing %llu feature flag", | |
3449 | flag); | |
3450 | } | |
3451 | spin_unlock(&fs_info->super_lock); | |
3452 | } | |
3453 | } | |
3454 | ||
3173a18f JB |
3455 | #define btrfs_fs_incompat(fs_info, opt) \ |
3456 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3457 | ||
9780c497 | 3458 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3459 | { |
3460 | struct btrfs_super_block *disk_super; | |
3461 | disk_super = fs_info->super_copy; | |
3462 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3463 | } | |
3464 | ||
1abfbcdf OS |
3465 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
3466 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3467 | ||
3468 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3469 | u64 flag) | |
3470 | { | |
3471 | struct btrfs_super_block *disk_super; | |
3472 | u64 features; | |
3473 | ||
3474 | disk_super = fs_info->super_copy; | |
3475 | features = btrfs_super_compat_ro_flags(disk_super); | |
3476 | if (!(features & flag)) { | |
3477 | spin_lock(&fs_info->super_lock); | |
3478 | features = btrfs_super_compat_ro_flags(disk_super); | |
3479 | if (!(features & flag)) { | |
3480 | features |= flag; | |
3481 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3482 | btrfs_info(fs_info, "setting %llu ro feature flag", | |
3483 | flag); | |
3484 | } | |
3485 | spin_unlock(&fs_info->super_lock); | |
3486 | } | |
3487 | } | |
3488 | ||
3489 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
3490 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3491 | ||
3492 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3493 | u64 flag) | |
3494 | { | |
3495 | struct btrfs_super_block *disk_super; | |
3496 | u64 features; | |
3497 | ||
3498 | disk_super = fs_info->super_copy; | |
3499 | features = btrfs_super_compat_ro_flags(disk_super); | |
3500 | if (features & flag) { | |
3501 | spin_lock(&fs_info->super_lock); | |
3502 | features = btrfs_super_compat_ro_flags(disk_super); | |
3503 | if (features & flag) { | |
3504 | features &= ~flag; | |
3505 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3506 | btrfs_info(fs_info, "clearing %llu ro feature flag", | |
3507 | flag); | |
3508 | } | |
3509 | spin_unlock(&fs_info->super_lock); | |
3510 | } | |
3511 | } | |
3512 | ||
3513 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3514 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3515 | ||
3516 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3517 | { | |
3518 | struct btrfs_super_block *disk_super; | |
3519 | disk_super = fs_info->super_copy; | |
3520 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3521 | } | |
3522 | ||
33268eaf | 3523 | /* acl.c */ |
0eda294d | 3524 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3525 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3526 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3527 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3528 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3529 | #else |
ed8f3737 | 3530 | #define btrfs_get_acl NULL |
996a710d | 3531 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3532 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3533 | struct inode *inode, struct inode *dir) | |
3534 | { | |
3535 | return 0; | |
3536 | } | |
9b89d95a | 3537 | #endif |
0f9dd46c | 3538 | |
5d4f98a2 YZ |
3539 | /* relocation.c */ |
3540 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
3541 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
3542 | struct btrfs_root *root); | |
3543 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3544 | struct btrfs_root *root); | |
3545 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3546 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
3547 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3548 | struct btrfs_root *root, struct extent_buffer *buf, | |
3549 | struct extent_buffer *cow); | |
147d256e | 3550 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 3551 | u64 *bytes_to_reserve); |
49b25e05 | 3552 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3553 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3554 | |
3555 | /* scrub.c */ | |
aa1b8cd4 SB |
3556 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3557 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3558 | int readonly, int is_dev_replace); |
143bede5 | 3559 | void btrfs_scrub_pause(struct btrfs_root *root); |
143bede5 | 3560 | void btrfs_scrub_continue(struct btrfs_root *root); |
aa1b8cd4 SB |
3561 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
3562 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
3563 | struct btrfs_device *dev); | |
a2de733c AJ |
3564 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, |
3565 | struct btrfs_scrub_progress *progress); | |
c404e0dc MX |
3566 | |
3567 | /* dev-replace.c */ | |
3568 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
3569 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
3570 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
3571 | ||
3572 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
3573 | { | |
3574 | btrfs_bio_counter_sub(fs_info, 1); | |
3575 | } | |
a2de733c | 3576 | |
7414a03f AJ |
3577 | /* reada.c */ |
3578 | struct reada_control { | |
3579 | struct btrfs_root *root; /* tree to prefetch */ | |
3580 | struct btrfs_key key_start; | |
3581 | struct btrfs_key key_end; /* exclusive */ | |
3582 | atomic_t elems; | |
3583 | struct kref refcnt; | |
3584 | wait_queue_head_t wait; | |
3585 | }; | |
3586 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3587 | struct btrfs_key *start, struct btrfs_key *end); | |
3588 | int btrfs_reada_wait(void *handle); | |
3589 | void btrfs_reada_detach(void *handle); | |
02873e43 ZL |
3590 | int btree_readahead_hook(struct btrfs_fs_info *fs_info, |
3591 | struct extent_buffer *eb, u64 start, int err); | |
7414a03f | 3592 | |
95a06077 JS |
3593 | static inline int is_fstree(u64 rootid) |
3594 | { | |
3595 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
3596 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
3597 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
3598 | return 1; |
3599 | return 0; | |
3600 | } | |
210549eb DS |
3601 | |
3602 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3603 | { | |
3604 | return signal_pending(current); | |
3605 | } | |
3606 | ||
aaedb55b JB |
3607 | /* Sanity test specific functions */ |
3608 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3609 | void btrfs_test_destroy_inode(struct inode *inode); | |
3610 | #endif | |
210549eb | 3611 | |
f5ee5c9a | 3612 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
fccb84c9 DS |
3613 | { |
3614 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
f5ee5c9a JM |
3615 | if (unlikely(test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, |
3616 | &fs_info->fs_state))) | |
fccb84c9 DS |
3617 | return 1; |
3618 | #endif | |
3619 | return 0; | |
3620 | } | |
eb60ceac | 3621 | #endif |