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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 | 22 | #include <linux/mm.h> |
174cd4b1 | 23 | #include <linux/sched/signal.h> |
810191ff | 24 | #include <linux/highmem.h> |
e20d96d6 | 25 | #include <linux/fs.h> |
a2de733c | 26 | #include <linux/rwsem.h> |
803b2f54 | 27 | #include <linux/semaphore.h> |
58176a96 | 28 | #include <linux/completion.h> |
04160088 | 29 | #include <linux/backing-dev.h> |
e6dcd2dc | 30 | #include <linux/wait.h> |
5a0e3ad6 | 31 | #include <linux/slab.h> |
f8b18087 | 32 | #include <linux/kobject.h> |
1abe9b8a | 33 | #include <trace/events/btrfs.h> |
479965d6 | 34 | #include <asm/kmap_types.h> |
3b16a4e3 | 35 | #include <linux/pagemap.h> |
55e301fd | 36 | #include <linux/btrfs.h> |
db671160 | 37 | #include <linux/btrfs_tree.h> |
21c7e756 | 38 | #include <linux/workqueue.h> |
f667aef6 | 39 | #include <linux/security.h> |
ee22184b | 40 | #include <linux/sizes.h> |
897a41b1 | 41 | #include <linux/dynamic_debug.h> |
1e4f4714 | 42 | #include <linux/refcount.h> |
d1310b2e | 43 | #include "extent_io.h" |
5f39d397 | 44 | #include "extent_map.h" |
8b712842 | 45 | #include "async-thread.h" |
e20d96d6 | 46 | |
e089f05c | 47 | struct btrfs_trans_handle; |
79154b1b | 48 | struct btrfs_transaction; |
a22285a6 | 49 | struct btrfs_pending_snapshot; |
35b7e476 CM |
50 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
51 | extern struct kmem_cache *btrfs_transaction_cachep; | |
52 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 53 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 54 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 55 | struct btrfs_ordered_sum; |
e089f05c | 56 | |
294e30fe JB |
57 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
58 | #define STATIC noinline | |
59 | #else | |
60 | #define STATIC static noinline | |
61 | #endif | |
62 | ||
cdb4c574 | 63 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 64 | |
72d7aefc | 65 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 66 | |
4008c04a | 67 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 68 | |
5d4f98a2 YZ |
69 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
70 | ||
727011e0 CM |
71 | /* |
72 | * the max metadata block size. This limit is somewhat artificial, | |
73 | * but the memmove costs go through the roof for larger blocks. | |
74 | */ | |
75 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
76 | ||
e20d96d6 CM |
77 | /* |
78 | * we can actually store much bigger names, but lets not confuse the rest | |
79 | * of linux | |
80 | */ | |
81 | #define BTRFS_NAME_LEN 255 | |
82 | ||
f186373f MF |
83 | /* |
84 | * Theoretical limit is larger, but we keep this down to a sane | |
85 | * value. That should limit greatly the possibility of collisions on | |
86 | * inode ref items. | |
87 | */ | |
88 | #define BTRFS_LINK_MAX 65535U | |
89 | ||
4d4ab6d6 | 90 | static const int btrfs_csum_sizes[] = { 4 }; |
607d432d | 91 | |
509659cd | 92 | /* four bytes for CRC32 */ |
3954401f | 93 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 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 | |
823bb20a DS |
102 | /* |
103 | * Count how many BTRFS_MAX_EXTENT_SIZE cover the @size | |
104 | */ | |
105 | static inline u32 count_max_extents(u64 size) | |
106 | { | |
107 | return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE); | |
108 | } | |
109 | ||
0b86a832 CM |
110 | struct btrfs_mapping_tree { |
111 | struct extent_map_tree map_tree; | |
112 | }; | |
113 | ||
0b86a832 CM |
114 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
115 | { | |
116 | BUG_ON(num_stripes == 0); | |
117 | return sizeof(struct btrfs_chunk) + | |
118 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
119 | } | |
120 | ||
acce952b | 121 | /* |
122 | * File system states | |
123 | */ | |
87533c47 | 124 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 125 | #define BTRFS_FS_STATE_REMOUNTING 1 |
08748810 | 126 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
c404e0dc | 127 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
7c0260ee | 128 | #define BTRFS_FS_STATE_DUMMY_FS_INFO 4 |
acce952b | 129 | |
5d4f98a2 YZ |
130 | #define BTRFS_BACKREF_REV_MAX 256 |
131 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
132 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
133 | BTRFS_BACKREF_REV_SHIFT) | |
134 | ||
135 | #define BTRFS_OLD_BACKREF_REV 0 | |
136 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 137 | |
fec577fb CM |
138 | /* |
139 | * every tree block (leaf or node) starts with this header. | |
140 | */ | |
bb492bb0 | 141 | struct btrfs_header { |
e17cade2 | 142 | /* these first four must match the super block */ |
f254e52c | 143 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 144 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 145 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 146 | __le64 flags; |
e17cade2 CM |
147 | |
148 | /* allowed to be different from the super from here on down */ | |
149 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 150 | __le64 generation; |
4d775673 | 151 | __le64 owner; |
5f39d397 | 152 | __le32 nritems; |
9a6f11ed | 153 | u8 level; |
eb60ceac CM |
154 | } __attribute__ ((__packed__)); |
155 | ||
0b86a832 CM |
156 | /* |
157 | * this is a very generous portion of the super block, giving us | |
158 | * room to translate 14 chunks with 3 stripes each. | |
159 | */ | |
160 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
161 | ||
af31f5e5 CM |
162 | /* |
163 | * just in case we somehow lose the roots and are not able to mount, | |
164 | * we store an array of the roots from previous transactions | |
165 | * in the super. | |
166 | */ | |
167 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
168 | struct btrfs_root_backup { | |
169 | __le64 tree_root; | |
170 | __le64 tree_root_gen; | |
171 | ||
172 | __le64 chunk_root; | |
173 | __le64 chunk_root_gen; | |
174 | ||
175 | __le64 extent_root; | |
176 | __le64 extent_root_gen; | |
177 | ||
178 | __le64 fs_root; | |
179 | __le64 fs_root_gen; | |
180 | ||
181 | __le64 dev_root; | |
182 | __le64 dev_root_gen; | |
183 | ||
184 | __le64 csum_root; | |
185 | __le64 csum_root_gen; | |
186 | ||
187 | __le64 total_bytes; | |
188 | __le64 bytes_used; | |
189 | __le64 num_devices; | |
190 | /* future */ | |
d1423248 | 191 | __le64 unused_64[4]; |
af31f5e5 CM |
192 | |
193 | u8 tree_root_level; | |
194 | u8 chunk_root_level; | |
195 | u8 extent_root_level; | |
196 | u8 fs_root_level; | |
197 | u8 dev_root_level; | |
198 | u8 csum_root_level; | |
199 | /* future and to align */ | |
200 | u8 unused_8[10]; | |
201 | } __attribute__ ((__packed__)); | |
202 | ||
fec577fb CM |
203 | /* |
204 | * the super block basically lists the main trees of the FS | |
205 | * it currently lacks any block count etc etc | |
206 | */ | |
234b63a0 | 207 | struct btrfs_super_block { |
f254e52c | 208 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 209 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 210 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 211 | __le64 bytenr; /* this block number */ |
63b10fc4 | 212 | __le64 flags; |
e17cade2 CM |
213 | |
214 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 215 | __le64 magic; |
3768f368 CM |
216 | __le64 generation; |
217 | __le64 root; | |
0b86a832 | 218 | __le64 chunk_root; |
e02119d5 | 219 | __le64 log_root; |
c3027eb5 CM |
220 | |
221 | /* this will help find the new super based on the log root */ | |
222 | __le64 log_root_transid; | |
db94535d CM |
223 | __le64 total_bytes; |
224 | __le64 bytes_used; | |
2e635a27 | 225 | __le64 root_dir_objectid; |
8a4b83cc | 226 | __le64 num_devices; |
5f39d397 CM |
227 | __le32 sectorsize; |
228 | __le32 nodesize; | |
707e8a07 | 229 | __le32 __unused_leafsize; |
87ee04eb | 230 | __le32 stripesize; |
0b86a832 | 231 | __le32 sys_chunk_array_size; |
84234f3a | 232 | __le64 chunk_root_generation; |
f2b636e8 JB |
233 | __le64 compat_flags; |
234 | __le64 compat_ro_flags; | |
235 | __le64 incompat_flags; | |
607d432d | 236 | __le16 csum_type; |
db94535d | 237 | u8 root_level; |
0b86a832 | 238 | u8 chunk_root_level; |
e02119d5 | 239 | u8 log_root_level; |
0d81ba5d | 240 | struct btrfs_dev_item dev_item; |
c3027eb5 | 241 | |
7ae9c09d | 242 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 243 | |
0af3d00b | 244 | __le64 cache_generation; |
26432799 | 245 | __le64 uuid_tree_generation; |
0af3d00b | 246 | |
c3027eb5 | 247 | /* future expansion */ |
26432799 | 248 | __le64 reserved[30]; |
0b86a832 | 249 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 250 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
251 | } __attribute__ ((__packed__)); |
252 | ||
f2b636e8 JB |
253 | /* |
254 | * Compat flags that we support. If any incompat flags are set other than the | |
255 | * ones specified below then we will fail to mount | |
256 | */ | |
5d4f98a2 | 257 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
258 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
259 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
70f6d82e OS |
260 | |
261 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ | |
6675df31 OS |
262 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \ |
263 | BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID) | |
70f6d82e | 264 | |
2eaa055f JM |
265 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
266 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
267 | ||
0af3d00b JB |
268 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
269 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 270 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 271 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 272 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 273 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
53b381b3 | 274 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 275 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f JB |
276 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
277 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) | |
f2b636e8 | 278 | |
2eaa055f JM |
279 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
280 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
281 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 282 | |
fec577fb | 283 | /* |
62e2749e | 284 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
285 | * the item in the leaf (relative to the start of the data area) |
286 | */ | |
0783fcfc | 287 | struct btrfs_item { |
e2fa7227 | 288 | struct btrfs_disk_key key; |
123abc88 | 289 | __le32 offset; |
5f39d397 | 290 | __le32 size; |
eb60ceac CM |
291 | } __attribute__ ((__packed__)); |
292 | ||
fec577fb CM |
293 | /* |
294 | * leaves have an item area and a data area: | |
295 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
296 | * | |
297 | * The data is separate from the items to get the keys closer together | |
298 | * during searches. | |
299 | */ | |
234b63a0 | 300 | struct btrfs_leaf { |
bb492bb0 | 301 | struct btrfs_header header; |
123abc88 | 302 | struct btrfs_item items[]; |
eb60ceac CM |
303 | } __attribute__ ((__packed__)); |
304 | ||
fec577fb CM |
305 | /* |
306 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
307 | * other blocks | |
308 | */ | |
123abc88 CM |
309 | struct btrfs_key_ptr { |
310 | struct btrfs_disk_key key; | |
311 | __le64 blockptr; | |
74493f7a | 312 | __le64 generation; |
123abc88 CM |
313 | } __attribute__ ((__packed__)); |
314 | ||
234b63a0 | 315 | struct btrfs_node { |
bb492bb0 | 316 | struct btrfs_header header; |
123abc88 | 317 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
318 | } __attribute__ ((__packed__)); |
319 | ||
fec577fb | 320 | /* |
234b63a0 CM |
321 | * btrfs_paths remember the path taken from the root down to the leaf. |
322 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
323 | * to any other levels that are present. |
324 | * | |
325 | * The slots array records the index of the item or block pointer | |
326 | * used while walking the tree. | |
327 | */ | |
e4058b54 | 328 | enum { READA_NONE = 0, READA_BACK, READA_FORWARD }; |
234b63a0 | 329 | struct btrfs_path { |
5f39d397 | 330 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 331 | int slots[BTRFS_MAX_LEVEL]; |
925baedd | 332 | /* if there is real range locking, this locks field will change */ |
4fb72bf2 | 333 | u8 locks[BTRFS_MAX_LEVEL]; |
dccabfad | 334 | u8 reada; |
925baedd | 335 | /* keep some upper locks as we walk down */ |
7853f15b | 336 | u8 lowest_level; |
459931ec CM |
337 | |
338 | /* | |
339 | * set by btrfs_split_item, tells search_slot to keep all locks | |
340 | * and to force calls to keep space in the nodes | |
341 | */ | |
b9473439 CM |
342 | unsigned int search_for_split:1; |
343 | unsigned int keep_locks:1; | |
344 | unsigned int skip_locking:1; | |
345 | unsigned int leave_spinning:1; | |
5d4f98a2 | 346 | unsigned int search_commit_root:1; |
3f8a18cc | 347 | unsigned int need_commit_sem:1; |
5f5bc6b1 | 348 | unsigned int skip_release_on_error:1; |
eb60ceac | 349 | }; |
da17066c | 350 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \ |
5d4f98a2 | 351 | sizeof(struct btrfs_item)) |
e922e087 SB |
352 | struct btrfs_dev_replace { |
353 | u64 replace_state; /* see #define above */ | |
354 | u64 time_started; /* seconds since 1-Jan-1970 */ | |
355 | u64 time_stopped; /* seconds since 1-Jan-1970 */ | |
356 | atomic64_t num_write_errors; | |
357 | atomic64_t num_uncorrectable_read_errors; | |
358 | ||
359 | u64 cursor_left; | |
360 | u64 committed_cursor_left; | |
361 | u64 cursor_left_last_write_of_item; | |
362 | u64 cursor_right; | |
363 | ||
364 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
365 | ||
366 | int is_valid; | |
367 | int item_needs_writeback; | |
368 | struct btrfs_device *srcdev; | |
369 | struct btrfs_device *tgtdev; | |
370 | ||
371 | pid_t lock_owner; | |
372 | atomic_t nesting_level; | |
373 | struct mutex lock_finishing_cancel_unmount; | |
73beece9 LB |
374 | rwlock_t lock; |
375 | atomic_t read_locks; | |
376 | atomic_t blocking_readers; | |
377 | wait_queue_head_t read_lock_wq; | |
e922e087 SB |
378 | |
379 | struct btrfs_scrub_progress scrub_progress; | |
380 | }; | |
381 | ||
c1895442 JM |
382 | /* For raid type sysfs entries */ |
383 | struct raid_kobject { | |
384 | int raid_type; | |
385 | struct kobject kobj; | |
386 | }; | |
387 | ||
6324fbf3 | 388 | struct btrfs_space_info { |
26b47ff6 | 389 | spinlock_t lock; |
6a63209f | 390 | |
89a55897 JB |
391 | u64 total_bytes; /* total bytes in the space, |
392 | this doesn't take mirrors into account */ | |
b742bb82 | 393 | u64 bytes_used; /* total bytes used, |
e9c54999 | 394 | this doesn't take mirrors into account */ |
6a63209f JB |
395 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
396 | transaction finishes */ | |
397 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
398 | current allocations */ | |
6a63209f | 399 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 400 | delalloc/allocations */ |
26b47ff6 MX |
401 | u64 bytes_readonly; /* total bytes that are read only */ |
402 | ||
4f4db217 JB |
403 | u64 max_extent_size; /* This will hold the maximum extent size of |
404 | the space info if we had an ENOSPC in the | |
405 | allocator. */ | |
406 | ||
26b47ff6 MX |
407 | unsigned int full:1; /* indicates that we cannot allocate any more |
408 | chunks for this space */ | |
409 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
410 | ||
411 | unsigned int flush:1; /* set if we are trying to make space */ | |
412 | ||
413 | unsigned int force_alloc; /* set if we need to force a chunk | |
414 | alloc for this space */ | |
415 | ||
b742bb82 | 416 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
417 | u64 disk_total; /* total bytes on disk, takes mirrors into |
418 | account */ | |
6a63209f | 419 | |
26b47ff6 MX |
420 | u64 flags; |
421 | ||
b150a4f1 JB |
422 | /* |
423 | * bytes_pinned is kept in line with what is actually pinned, as in | |
424 | * we've called update_block_group and dropped the bytes_used counter | |
425 | * and increased the bytes_pinned counter. However this means that | |
426 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
bb7ab3b9 AB |
427 | * delayed refs are flushed, so this counter is inc'ed every time we |
428 | * call btrfs_free_extent so it is a realtime count of what will be | |
01327610 | 429 | * freed once the transaction is committed. It will be zeroed every |
bb7ab3b9 | 430 | * time the transaction commits. |
b150a4f1 JB |
431 | */ |
432 | struct percpu_counter total_bytes_pinned; | |
433 | ||
6324fbf3 | 434 | struct list_head list; |
75c68e9f | 435 | /* Protected by the spinlock 'lock'. */ |
633c0aad | 436 | struct list_head ro_bgs; |
957780eb JB |
437 | struct list_head priority_tickets; |
438 | struct list_head tickets; | |
939659df WX |
439 | /* |
440 | * tickets_id just indicates the next ticket will be handled, so note | |
441 | * it's not stored per ticket. | |
442 | */ | |
ce129655 | 443 | u64 tickets_id; |
0f9dd46c | 444 | |
26b47ff6 | 445 | struct rw_semaphore groups_sem; |
0f9dd46c | 446 | /* for block groups in our same type */ |
b742bb82 | 447 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 448 | wait_queue_head_t wait; |
6ab0a202 JM |
449 | |
450 | struct kobject kobj; | |
c1895442 | 451 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
0f9dd46c JB |
452 | }; |
453 | ||
66d8f3dd MX |
454 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
455 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
456 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
457 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
458 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
459 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
460 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
461 | ||
f0486c68 YZ |
462 | struct btrfs_block_rsv { |
463 | u64 size; | |
464 | u64 reserved; | |
f0486c68 | 465 | struct btrfs_space_info *space_info; |
f0486c68 | 466 | spinlock_t lock; |
66d8f3dd MX |
467 | unsigned short full; |
468 | unsigned short type; | |
469 | unsigned short failfast; | |
f0486c68 YZ |
470 | }; |
471 | ||
fa9c0d79 CM |
472 | /* |
473 | * free clusters are used to claim free space in relatively large chunks, | |
474 | * allowing us to do less seeky writes. They are used for all metadata | |
475 | * allocations and data allocations in ssd mode. | |
476 | */ | |
477 | struct btrfs_free_cluster { | |
478 | spinlock_t lock; | |
479 | spinlock_t refill_lock; | |
480 | struct rb_root root; | |
481 | ||
482 | /* largest extent in this cluster */ | |
483 | u64 max_size; | |
484 | ||
485 | /* first extent starting offset */ | |
486 | u64 window_start; | |
487 | ||
c759c4e1 JB |
488 | /* We did a full search and couldn't create a cluster */ |
489 | bool fragmented; | |
490 | ||
fa9c0d79 CM |
491 | struct btrfs_block_group_cache *block_group; |
492 | /* | |
493 | * when a cluster is allocated from a block group, we put the | |
494 | * cluster onto a list in the block group so that it can | |
495 | * be freed before the block group is freed. | |
496 | */ | |
497 | struct list_head block_group_list; | |
6324fbf3 CM |
498 | }; |
499 | ||
817d52f8 JB |
500 | enum btrfs_caching_type { |
501 | BTRFS_CACHE_NO = 0, | |
502 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
503 | BTRFS_CACHE_FAST = 2, |
504 | BTRFS_CACHE_FINISHED = 3, | |
36cce922 | 505 | BTRFS_CACHE_ERROR = 4, |
817d52f8 JB |
506 | }; |
507 | ||
0af3d00b JB |
508 | enum btrfs_disk_cache_state { |
509 | BTRFS_DC_WRITTEN = 0, | |
510 | BTRFS_DC_ERROR = 1, | |
511 | BTRFS_DC_CLEAR = 2, | |
512 | BTRFS_DC_SETUP = 3, | |
0af3d00b JB |
513 | }; |
514 | ||
11833d66 YZ |
515 | struct btrfs_caching_control { |
516 | struct list_head list; | |
517 | struct mutex mutex; | |
518 | wait_queue_head_t wait; | |
bab39bf9 | 519 | struct btrfs_work work; |
11833d66 YZ |
520 | struct btrfs_block_group_cache *block_group; |
521 | u64 progress; | |
1e4f4714 | 522 | refcount_t count; |
11833d66 YZ |
523 | }; |
524 | ||
73fa48b6 OS |
525 | /* Once caching_thread() finds this much free space, it will wake up waiters. */ |
526 | #define CACHING_CTL_WAKE_UP (1024 * 1024 * 2) | |
527 | ||
4c6d1d85 CM |
528 | struct btrfs_io_ctl { |
529 | void *cur, *orig; | |
530 | struct page *page; | |
531 | struct page **pages; | |
f15376df | 532 | struct btrfs_fs_info *fs_info; |
c9dc4c65 | 533 | struct inode *inode; |
4c6d1d85 CM |
534 | unsigned long size; |
535 | int index; | |
536 | int num_pages; | |
c9dc4c65 CM |
537 | int entries; |
538 | int bitmaps; | |
4c6d1d85 CM |
539 | unsigned check_crcs:1; |
540 | }; | |
541 | ||
0966a7b1 QW |
542 | /* |
543 | * Tree to record all locked full stripes of a RAID5/6 block group | |
544 | */ | |
545 | struct btrfs_full_stripe_locks_tree { | |
546 | struct rb_root root; | |
547 | struct mutex lock; | |
548 | }; | |
549 | ||
9078a3e1 CM |
550 | struct btrfs_block_group_cache { |
551 | struct btrfs_key key; | |
552 | struct btrfs_block_group_item item; | |
817d52f8 | 553 | struct btrfs_fs_info *fs_info; |
0af3d00b | 554 | struct inode *inode; |
c286ac48 | 555 | spinlock_t lock; |
324ae4df | 556 | u64 pinned; |
e8569813 | 557 | u64 reserved; |
e570fd27 | 558 | u64 delalloc_bytes; |
1b2da372 | 559 | u64 bytes_super; |
0b86a832 | 560 | u64 flags; |
5b0e95bf | 561 | u64 cache_generation; |
a5ed9182 OS |
562 | u32 sectorsize; |
563 | ||
564 | /* | |
565 | * If the free space extent count exceeds this number, convert the block | |
566 | * group to bitmaps. | |
567 | */ | |
568 | u32 bitmap_high_thresh; | |
569 | ||
570 | /* | |
571 | * If the free space extent count drops below this number, convert the | |
572 | * block group back to extents. | |
573 | */ | |
574 | u32 bitmap_low_thresh; | |
53b381b3 | 575 | |
e570fd27 MX |
576 | /* |
577 | * It is just used for the delayed data space allocation because | |
578 | * only the data space allocation and the relative metadata update | |
579 | * can be done cross the transaction. | |
580 | */ | |
581 | struct rw_semaphore data_rwsem; | |
582 | ||
53b381b3 DW |
583 | /* for raid56, this is a full stripe, without parity */ |
584 | unsigned long full_stripe_len; | |
585 | ||
868f401a | 586 | unsigned int ro; |
0410c94a | 587 | unsigned int iref:1; |
4f69cb98 | 588 | unsigned int has_caching_ctl:1; |
04216820 | 589 | unsigned int removed:1; |
0af3d00b JB |
590 | |
591 | int disk_cache_state; | |
0f9dd46c | 592 | |
817d52f8 | 593 | /* cache tracking stuff */ |
817d52f8 | 594 | int cached; |
11833d66 YZ |
595 | struct btrfs_caching_control *caching_ctl; |
596 | u64 last_byte_to_unpin; | |
817d52f8 | 597 | |
0f9dd46c JB |
598 | struct btrfs_space_info *space_info; |
599 | ||
600 | /* free space cache stuff */ | |
34d52cb6 | 601 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
602 | |
603 | /* block group cache stuff */ | |
604 | struct rb_node cache_node; | |
605 | ||
606 | /* for block groups in the same raid type */ | |
607 | struct list_head list; | |
d2fb3437 YZ |
608 | |
609 | /* usage count */ | |
610 | atomic_t count; | |
fa9c0d79 CM |
611 | |
612 | /* List of struct btrfs_free_clusters for this block group. | |
613 | * Today it will only have one thing on it, but that may change | |
614 | */ | |
615 | struct list_head cluster_list; | |
ea658bad | 616 | |
47ab2a6c JB |
617 | /* For delayed block group creation or deletion of empty block groups */ |
618 | struct list_head bg_list; | |
633c0aad JB |
619 | |
620 | /* For read-only block groups */ | |
621 | struct list_head ro_list; | |
04216820 FM |
622 | |
623 | atomic_t trimming; | |
ce93ec54 JB |
624 | |
625 | /* For dirty block groups */ | |
626 | struct list_head dirty_list; | |
c9dc4c65 CM |
627 | struct list_head io_list; |
628 | ||
629 | struct btrfs_io_ctl io_ctl; | |
a5ed9182 | 630 | |
9cfa3e34 FM |
631 | /* |
632 | * Incremented when doing extent allocations and holding a read lock | |
633 | * on the space_info's groups_sem semaphore. | |
634 | * Decremented when an ordered extent that represents an IO against this | |
635 | * block group's range is created (after it's added to its inode's | |
636 | * root's list of ordered extents) or immediately after the allocation | |
637 | * if it's a metadata extent or fallocate extent (for these cases we | |
638 | * don't create ordered extents). | |
639 | */ | |
640 | atomic_t reservations; | |
641 | ||
f78c436c FM |
642 | /* |
643 | * Incremented while holding the spinlock *lock* by a task checking if | |
644 | * it can perform a nocow write (incremented if the value for the *ro* | |
645 | * field is 0). Decremented by such tasks once they create an ordered | |
646 | * extent or before that if some error happens before reaching that step. | |
647 | * This is to prevent races between block group relocation and nocow | |
648 | * writes through direct IO. | |
649 | */ | |
650 | atomic_t nocow_writers; | |
651 | ||
a5ed9182 OS |
652 | /* Lock for free space tree operations. */ |
653 | struct mutex free_space_lock; | |
654 | ||
655 | /* | |
656 | * Does the block group need to be added to the free space tree? | |
657 | * Protected by free_space_lock. | |
658 | */ | |
659 | int needs_free_space; | |
0966a7b1 QW |
660 | |
661 | /* Record locked full stripes for RAID5/6 block group */ | |
662 | struct btrfs_full_stripe_locks_tree full_stripe_locks_root; | |
9078a3e1 | 663 | }; |
0b86a832 | 664 | |
097b8a7c JS |
665 | /* delayed seq elem */ |
666 | struct seq_list { | |
667 | struct list_head list; | |
668 | u64 seq; | |
669 | }; | |
670 | ||
3284da7b DS |
671 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
672 | ||
de47c9d3 EN |
673 | #define SEQ_LAST ((u64)-1) |
674 | ||
5d80366e JB |
675 | enum btrfs_orphan_cleanup_state { |
676 | ORPHAN_CLEANUP_STARTED = 1, | |
677 | ORPHAN_CLEANUP_DONE = 2, | |
678 | }; | |
679 | ||
53b381b3 DW |
680 | /* used by the raid56 code to lock stripes for read/modify/write */ |
681 | struct btrfs_stripe_hash { | |
682 | struct list_head hash_list; | |
683 | wait_queue_head_t wait; | |
684 | spinlock_t lock; | |
685 | }; | |
686 | ||
687 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
688 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
689 | struct list_head stripe_cache; |
690 | spinlock_t cache_lock; | |
691 | int cache_size; | |
692 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
693 | }; |
694 | ||
695 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
696 | ||
21c7e756 MX |
697 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
698 | ||
097b8a7c | 699 | /* fs_info */ |
5d4f98a2 | 700 | struct reloc_control; |
0b86a832 | 701 | struct btrfs_device; |
8a4b83cc | 702 | struct btrfs_fs_devices; |
c9e9f97b | 703 | struct btrfs_balance_control; |
16cdcec7 | 704 | struct btrfs_delayed_root; |
afcdd129 JB |
705 | |
706 | #define BTRFS_FS_BARRIER 1 | |
707 | #define BTRFS_FS_CLOSING_START 2 | |
708 | #define BTRFS_FS_CLOSING_DONE 3 | |
709 | #define BTRFS_FS_LOG_RECOVERING 4 | |
710 | #define BTRFS_FS_OPEN 5 | |
711 | #define BTRFS_FS_QUOTA_ENABLED 6 | |
712 | #define BTRFS_FS_QUOTA_ENABLING 7 | |
713 | #define BTRFS_FS_QUOTA_DISABLING 8 | |
714 | #define BTRFS_FS_UPDATE_UUID_TREE_GEN 9 | |
715 | #define BTRFS_FS_CREATING_FREE_SPACE_TREE 10 | |
716 | #define BTRFS_FS_BTREE_ERR 11 | |
717 | #define BTRFS_FS_LOG1_ERR 12 | |
718 | #define BTRFS_FS_LOG2_ERR 13 | |
f29efe29 SD |
719 | #define BTRFS_FS_QUOTA_OVERRIDE 14 |
720 | ||
171938e5 DS |
721 | /* |
722 | * Indicate that a whole-filesystem exclusive operation is running | |
723 | * (device replace, resize, device add/delete, balance) | |
724 | */ | |
725 | #define BTRFS_FS_EXCL_OP 14 | |
afcdd129 | 726 | |
9f5fae2f | 727 | struct btrfs_fs_info { |
5f39d397 | 728 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 729 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
afcdd129 | 730 | unsigned long flags; |
62e2749e CM |
731 | struct btrfs_root *extent_root; |
732 | struct btrfs_root *tree_root; | |
0b86a832 CM |
733 | struct btrfs_root *chunk_root; |
734 | struct btrfs_root *dev_root; | |
3de4586c | 735 | struct btrfs_root *fs_root; |
d20f7043 | 736 | struct btrfs_root *csum_root; |
416ac51d | 737 | struct btrfs_root *quota_root; |
f7a81ea4 | 738 | struct btrfs_root *uuid_root; |
a5ed9182 | 739 | struct btrfs_root *free_space_root; |
e02119d5 CM |
740 | |
741 | /* the log root tree is a directory of all the other log roots */ | |
742 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
743 | |
744 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 745 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 746 | |
0f9dd46c JB |
747 | /* block group cache stuff */ |
748 | spinlock_t block_group_cache_lock; | |
a1897fdd | 749 | u64 first_logical_byte; |
0f9dd46c JB |
750 | struct rb_root block_group_cache_tree; |
751 | ||
2bf64758 | 752 | /* keep track of unallocated space */ |
a5ed45f8 | 753 | atomic64_t free_chunk_space; |
2bf64758 | 754 | |
11833d66 YZ |
755 | struct extent_io_tree freed_extents[2]; |
756 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 757 | |
0b86a832 CM |
758 | /* logical->physical extent mapping */ |
759 | struct btrfs_mapping_tree mapping_tree; | |
760 | ||
16cdcec7 MX |
761 | /* |
762 | * block reservation for extent, checksum, root tree and | |
763 | * delayed dir index item | |
764 | */ | |
f0486c68 YZ |
765 | struct btrfs_block_rsv global_block_rsv; |
766 | /* block reservation for delay allocation */ | |
767 | struct btrfs_block_rsv delalloc_block_rsv; | |
768 | /* block reservation for metadata operations */ | |
769 | struct btrfs_block_rsv trans_block_rsv; | |
770 | /* block reservation for chunk tree */ | |
771 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
772 | /* block reservation for delayed operations */ |
773 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
774 | |
775 | struct btrfs_block_rsv empty_block_rsv; | |
776 | ||
293ffd5f | 777 | u64 generation; |
15ee9bc7 | 778 | u64 last_trans_committed; |
0a2b2a84 | 779 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
780 | |
781 | /* | |
782 | * this is updated to the current trans every time a full commit | |
783 | * is required instead of the faster short fsync log commits | |
784 | */ | |
785 | u64 last_trans_log_full_commit; | |
25cd999e | 786 | unsigned long mount_opt; |
572d9ab7 DS |
787 | /* |
788 | * Track requests for actions that need to be done during transaction | |
789 | * commit (like for some mount options). | |
790 | */ | |
791 | unsigned long pending_changes; | |
261507a0 | 792 | unsigned long compress_type:4; |
8b87dc17 | 793 | int commit_interval; |
8c6a3ee6 MX |
794 | /* |
795 | * It is a suggestive number, the read side is safe even it gets a | |
796 | * wrong number because we will write out the data into a regular | |
797 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
798 | * so it is also safe. | |
799 | */ | |
6f568d35 | 800 | u64 max_inline; |
c018daec MX |
801 | /* |
802 | * Protected by ->chunk_mutex and sb->s_umount. | |
803 | * | |
804 | * The reason that we use two lock to protect it is because only | |
805 | * remount and mount operations can change it and these two operations | |
806 | * are under sb->s_umount, but the read side (chunk allocation) can not | |
807 | * acquire sb->s_umount or the deadlock would happen. So we use two | |
808 | * locks to protect it. On the write side, we must acquire two locks, | |
809 | * and on the read side, we just need acquire one of them. | |
810 | */ | |
8f662a76 | 811 | u64 alloc_start; |
79154b1b | 812 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 813 | wait_queue_head_t transaction_throttle; |
f9295749 | 814 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 815 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 816 | wait_queue_head_t async_submit_wait; |
e02119d5 | 817 | |
ceda0864 MX |
818 | /* |
819 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
820 | * when they are updated. | |
821 | * | |
822 | * Because we do not clear the flags for ever, so we needn't use | |
823 | * the lock on the read side. | |
824 | * | |
825 | * We also needn't use the lock when we mount the fs, because | |
826 | * there is no other task which will update the flag. | |
827 | */ | |
828 | spinlock_t super_lock; | |
6c41761f DS |
829 | struct btrfs_super_block *super_copy; |
830 | struct btrfs_super_block *super_for_commit; | |
e20d96d6 | 831 | struct super_block *sb; |
d98237b3 | 832 | struct inode *btree_inode; |
e02119d5 | 833 | struct mutex tree_log_mutex; |
a74a4b97 CM |
834 | struct mutex transaction_kthread_mutex; |
835 | struct mutex cleaner_mutex; | |
925baedd | 836 | struct mutex chunk_mutex; |
7d9eb12c | 837 | struct mutex volume_mutex; |
53b381b3 | 838 | |
1bbc621e CM |
839 | /* |
840 | * this is taken to make sure we don't set block groups ro after | |
841 | * the free space cache has been allocated on them | |
842 | */ | |
843 | struct mutex ro_block_group_mutex; | |
844 | ||
53b381b3 DW |
845 | /* this is used during read/modify/write to make sure |
846 | * no two ios are trying to mod the same stripe at the same | |
847 | * time | |
848 | */ | |
849 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
850 | ||
5a3f23d5 CM |
851 | /* |
852 | * this protects the ordered operations list only while we are | |
853 | * processing all of the entries on it. This way we make | |
854 | * sure the commit code doesn't find the list temporarily empty | |
855 | * because another function happens to be doing non-waiting preflush | |
856 | * before jumping into the main commit. | |
857 | */ | |
858 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 859 | |
9e351cc8 | 860 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 861 | |
c71bf099 | 862 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 863 | |
c71bf099 | 864 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
865 | struct srcu_struct subvol_srcu; |
866 | ||
a4abeea4 | 867 | spinlock_t trans_lock; |
7585717f CM |
868 | /* |
869 | * the reloc mutex goes with the trans lock, it is taken | |
870 | * during commit to protect us from the relocation code | |
871 | */ | |
872 | struct mutex reloc_mutex; | |
873 | ||
8fd17795 | 874 | struct list_head trans_list; |
facda1e7 | 875 | struct list_head dead_roots; |
11833d66 | 876 | struct list_head caching_block_groups; |
e02119d5 | 877 | |
24bbcf04 YZ |
878 | spinlock_t delayed_iput_lock; |
879 | struct list_head delayed_iputs; | |
c2d6cb16 | 880 | struct mutex cleaner_delayed_iput_mutex; |
24bbcf04 | 881 | |
f29021b2 JS |
882 | /* this protects tree_mod_seq_list */ |
883 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 884 | atomic64_t tree_mod_seq; |
f29021b2 JS |
885 | struct list_head tree_mod_seq_list; |
886 | ||
887 | /* this protects tree_mod_log */ | |
888 | rwlock_t tree_mod_log_lock; | |
889 | struct rb_root tree_mod_log; | |
890 | ||
cb03c743 | 891 | atomic_t nr_async_submits; |
8c8bee1d | 892 | atomic_t async_submit_draining; |
0986fe9e | 893 | atomic_t nr_async_bios; |
771ed689 | 894 | atomic_t async_delalloc_pages; |
a4abeea4 | 895 | atomic_t open_ioctl_trans; |
ce9adaa5 | 896 | |
3eaa2885 | 897 | /* |
199c2a9c | 898 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 899 | */ |
199c2a9c | 900 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
901 | |
902 | /* | |
199c2a9c MX |
903 | * all fs/file tree roots in which there are data=ordered extents |
904 | * pending writeback are added into this list. | |
905 | * | |
5a3f23d5 CM |
906 | * these can span multiple transactions and basically include |
907 | * every dirty data page that isn't from nodatacow | |
908 | */ | |
199c2a9c | 909 | struct list_head ordered_roots; |
5a3f23d5 | 910 | |
573bfb72 | 911 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
912 | spinlock_t delalloc_root_lock; |
913 | /* all fs/file tree roots that have delalloc inodes. */ | |
914 | struct list_head delalloc_roots; | |
3eaa2885 | 915 | |
8b712842 CM |
916 | /* |
917 | * there is a pool of worker threads for checksumming during writes | |
918 | * and a pool for checksumming after reads. This is because readers | |
919 | * can run with FS locks held, and the writers may be waiting for | |
920 | * those locks. We don't want ordering in the pending list to cause | |
921 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
922 | * |
923 | * A third pool does submit_bio to avoid deadlocking with the other | |
924 | * two | |
8b712842 | 925 | */ |
d458b054 QW |
926 | struct btrfs_workqueue *workers; |
927 | struct btrfs_workqueue *delalloc_workers; | |
928 | struct btrfs_workqueue *flush_workers; | |
929 | struct btrfs_workqueue *endio_workers; | |
930 | struct btrfs_workqueue *endio_meta_workers; | |
931 | struct btrfs_workqueue *endio_raid56_workers; | |
8b110e39 | 932 | struct btrfs_workqueue *endio_repair_workers; |
d458b054 QW |
933 | struct btrfs_workqueue *rmw_workers; |
934 | struct btrfs_workqueue *endio_meta_write_workers; | |
935 | struct btrfs_workqueue *endio_write_workers; | |
936 | struct btrfs_workqueue *endio_freespace_worker; | |
937 | struct btrfs_workqueue *submit_workers; | |
938 | struct btrfs_workqueue *caching_workers; | |
939 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 940 | |
247e743c CM |
941 | /* |
942 | * fixup workers take dirty pages that didn't properly go through | |
943 | * the cow mechanism and make them safe to write. It happens | |
944 | * for the sys_munmap function call path | |
945 | */ | |
d458b054 QW |
946 | struct btrfs_workqueue *fixup_workers; |
947 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b CM |
948 | |
949 | /* the extent workers do delayed refs on the extent allocation tree */ | |
950 | struct btrfs_workqueue *extent_workers; | |
a74a4b97 CM |
951 | struct task_struct *transaction_kthread; |
952 | struct task_struct *cleaner_kthread; | |
4543df7e | 953 | int thread_pool_size; |
8b712842 | 954 | |
6ab0a202 | 955 | struct kobject *space_info_kobj; |
9f5fae2f | 956 | |
324ae4df | 957 | u64 total_pinned; |
b9473439 | 958 | |
e2d84521 MX |
959 | /* used to keep from writing metadata until there is a nice batch */ |
960 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 961 | struct percpu_counter delalloc_bytes; |
e2d84521 | 962 | s32 dirty_metadata_batch; |
963d678b MX |
963 | s32 delalloc_batch; |
964 | ||
0b86a832 CM |
965 | struct list_head dirty_cowonly_roots; |
966 | ||
8a4b83cc | 967 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
968 | |
969 | /* | |
970 | * the space_info list is almost entirely read only. It only changes | |
971 | * when we add a new raid type to the FS, and that happens | |
972 | * very rarely. RCU is used to protect it. | |
973 | */ | |
6324fbf3 | 974 | struct list_head space_info; |
4184ea7f | 975 | |
b4d7c3c9 LZ |
976 | struct btrfs_space_info *data_sinfo; |
977 | ||
5d4f98a2 YZ |
978 | struct reloc_control *reloc_ctl; |
979 | ||
fa9c0d79 CM |
980 | /* data_alloc_cluster is only used in ssd mode */ |
981 | struct btrfs_free_cluster data_alloc_cluster; | |
982 | ||
983 | /* all metadata allocations go through this cluster */ | |
984 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 985 | |
4cb5300b CM |
986 | /* auto defrag inodes go here */ |
987 | spinlock_t defrag_inodes_lock; | |
988 | struct rb_root defrag_inodes; | |
989 | atomic_t defrag_running; | |
990 | ||
de98ced9 MX |
991 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
992 | seqlock_t profiles_lock; | |
a46d11a8 ID |
993 | /* |
994 | * these three are in extended format (availability of single | |
995 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
996 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
997 | */ | |
d18a2c44 CM |
998 | u64 avail_data_alloc_bits; |
999 | u64 avail_metadata_alloc_bits; | |
1000 | u64 avail_system_alloc_bits; | |
788f20eb | 1001 | |
c9e9f97b ID |
1002 | /* restriper state */ |
1003 | spinlock_t balance_lock; | |
1004 | struct mutex balance_mutex; | |
837d5b6e ID |
1005 | atomic_t balance_running; |
1006 | atomic_t balance_pause_req; | |
a7e99c69 | 1007 | atomic_t balance_cancel_req; |
c9e9f97b | 1008 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1009 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1010 | |
97e728d4 JB |
1011 | unsigned data_chunk_allocations; |
1012 | unsigned metadata_ratio; | |
1013 | ||
788f20eb | 1014 | void *bdev_holder; |
acce952b | 1015 | |
a2de733c AJ |
1016 | /* private scrub information */ |
1017 | struct mutex scrub_lock; | |
1018 | atomic_t scrubs_running; | |
1019 | atomic_t scrub_pause_req; | |
1020 | atomic_t scrubs_paused; | |
1021 | atomic_t scrub_cancel_req; | |
1022 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 1023 | int scrub_workers_refcnt; |
d458b054 QW |
1024 | struct btrfs_workqueue *scrub_workers; |
1025 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
1026 | struct btrfs_workqueue *scrub_nocow_workers; | |
20b2e302 | 1027 | struct btrfs_workqueue *scrub_parity_workers; |
a2de733c | 1028 | |
21adbd5c SB |
1029 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1030 | u32 check_integrity_print_mask; | |
1031 | #endif | |
416ac51d AJ |
1032 | /* is qgroup tracking in a consistent state? */ |
1033 | u64 qgroup_flags; | |
1034 | ||
1035 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1036 | struct rb_root qgroup_tree; | |
fcebe456 | 1037 | struct rb_root qgroup_op_tree; |
416ac51d | 1038 | spinlock_t qgroup_lock; |
fcebe456 JB |
1039 | spinlock_t qgroup_op_lock; |
1040 | atomic_t qgroup_op_seq; | |
416ac51d | 1041 | |
1e8f9158 WS |
1042 | /* |
1043 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1044 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1045 | */ | |
1046 | struct ulist *qgroup_ulist; | |
1047 | ||
f2f6ed3d WS |
1048 | /* protect user change for quota operations */ |
1049 | struct mutex qgroup_ioctl_lock; | |
1050 | ||
416ac51d AJ |
1051 | /* list of dirty qgroups to be written at next commit */ |
1052 | struct list_head dirty_qgroups; | |
1053 | ||
e69bcee3 | 1054 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 1055 | u64 qgroup_seq; |
21adbd5c | 1056 | |
2f232036 JS |
1057 | /* qgroup rescan items */ |
1058 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1059 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1060 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1061 | struct completion qgroup_rescan_completion; |
b382a324 | 1062 | struct btrfs_work qgroup_rescan_work; |
d2c609b8 | 1063 | bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ |
2f232036 | 1064 | |
acce952b | 1065 | /* filesystem state */ |
87533c47 | 1066 | unsigned long fs_state; |
16cdcec7 MX |
1067 | |
1068 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1069 | |
90519d66 AJ |
1070 | /* readahead tree */ |
1071 | spinlock_t reada_lock; | |
1072 | struct radix_tree_root reada_tree; | |
531f4b1a | 1073 | |
2fefd558 ZL |
1074 | /* readahead works cnt */ |
1075 | atomic_t reada_works_cnt; | |
1076 | ||
f28491e0 JB |
1077 | /* Extent buffer radix tree */ |
1078 | spinlock_t buffer_lock; | |
1079 | struct radix_tree_root buffer_radix; | |
1080 | ||
af31f5e5 CM |
1081 | /* next backup root to be overwritten */ |
1082 | int backup_root_index; | |
5af3e8cc SB |
1083 | |
1084 | int num_tolerated_disk_barrier_failures; | |
e922e087 SB |
1085 | |
1086 | /* device replace state */ | |
1087 | struct btrfs_dev_replace dev_replace; | |
5ac00add | 1088 | |
c404e0dc MX |
1089 | struct percpu_counter bio_counter; |
1090 | wait_queue_head_t replace_wait; | |
1091 | ||
803b2f54 | 1092 | struct semaphore uuid_tree_rescan_sem; |
21c7e756 MX |
1093 | |
1094 | /* Used to reclaim the metadata space in the background. */ | |
1095 | struct work_struct async_reclaim_work; | |
47ab2a6c JB |
1096 | |
1097 | spinlock_t unused_bgs_lock; | |
1098 | struct list_head unused_bgs; | |
d4b450cd | 1099 | struct mutex unused_bg_unpin_mutex; |
67c5e7d4 | 1100 | struct mutex delete_unused_bgs_mutex; |
f667aef6 QW |
1101 | |
1102 | /* For btrfs to record security options */ | |
1103 | struct security_mnt_opts security_opts; | |
04216820 FM |
1104 | |
1105 | /* | |
1106 | * Chunks that can't be freed yet (under a trim/discard operation) | |
1107 | * and will be latter freed. Protected by fs_info->chunk_mutex. | |
1108 | */ | |
1109 | struct list_head pinned_chunks; | |
511711af | 1110 | |
9e7cc91a WX |
1111 | /* Used to record internally whether fs has been frozen */ |
1112 | int fs_frozen; | |
da17066c JM |
1113 | |
1114 | /* Cached block sizes */ | |
1115 | u32 nodesize; | |
1116 | u32 sectorsize; | |
1117 | u32 stripesize; | |
324ae4df | 1118 | }; |
0b86a832 | 1119 | |
da17066c JM |
1120 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
1121 | { | |
1122 | return sb->s_fs_info; | |
1123 | } | |
1124 | ||
8257b2dc MX |
1125 | struct btrfs_subvolume_writers { |
1126 | struct percpu_counter counter; | |
1127 | wait_queue_head_t wait; | |
1128 | }; | |
1129 | ||
27cdeb70 MX |
1130 | /* |
1131 | * The state of btrfs root | |
1132 | */ | |
1133 | /* | |
1134 | * btrfs_record_root_in_trans is a multi-step process, | |
1135 | * and it can race with the balancing code. But the | |
1136 | * race is very small, and only the first time the root | |
1137 | * is added to each transaction. So IN_TRANS_SETUP | |
1138 | * is used to tell us when more checks are required | |
1139 | */ | |
1140 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 | |
1141 | #define BTRFS_ROOT_REF_COWS 1 | |
1142 | #define BTRFS_ROOT_TRACK_DIRTY 2 | |
1143 | #define BTRFS_ROOT_IN_RADIX 3 | |
f5ee5c9a JM |
1144 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 4 |
1145 | #define BTRFS_ROOT_DEFRAG_RUNNING 5 | |
1146 | #define BTRFS_ROOT_FORCE_COW 6 | |
1147 | #define BTRFS_ROOT_MULTI_LOG_TASKS 7 | |
1148 | #define BTRFS_ROOT_DIRTY 8 | |
27cdeb70 | 1149 | |
9f5fae2f CM |
1150 | /* |
1151 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1152 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1153 | */ |
1154 | struct btrfs_root { | |
5f39d397 | 1155 | struct extent_buffer *node; |
925baedd | 1156 | |
5f39d397 | 1157 | struct extent_buffer *commit_root; |
e02119d5 | 1158 | struct btrfs_root *log_root; |
1a40e23b | 1159 | struct btrfs_root *reloc_root; |
31153d81 | 1160 | |
27cdeb70 | 1161 | unsigned long state; |
62e2749e CM |
1162 | struct btrfs_root_item root_item; |
1163 | struct btrfs_key root_key; | |
9f5fae2f | 1164 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1165 | struct extent_io_tree dirty_log_pages; |
1166 | ||
a2135011 | 1167 | struct mutex objectid_mutex; |
7237f183 | 1168 | |
f0486c68 YZ |
1169 | spinlock_t accounting_lock; |
1170 | struct btrfs_block_rsv *block_rsv; | |
1171 | ||
581bb050 | 1172 | /* free ino cache stuff */ |
581bb050 | 1173 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1174 | enum btrfs_caching_type ino_cache_state; |
1175 | spinlock_t ino_cache_lock; | |
1176 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1177 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1178 | u64 ino_cache_progress; |
1179 | struct inode *ino_cache_inode; | |
581bb050 | 1180 | |
e02119d5 | 1181 | struct mutex log_mutex; |
7237f183 YZ |
1182 | wait_queue_head_t log_writer_wait; |
1183 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1184 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1185 | atomic_t log_writers; |
1186 | atomic_t log_commit[2]; | |
2ecb7923 | 1187 | atomic_t log_batch; |
bb14a59b | 1188 | int log_transid; |
d1433deb MX |
1189 | /* No matter the commit succeeds or not*/ |
1190 | int log_transid_committed; | |
1191 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1192 | int last_log_commit; |
ff782e0a | 1193 | pid_t log_start_pid; |
ea8c2819 | 1194 | |
0f7d52f4 CM |
1195 | u64 objectid; |
1196 | u64 last_trans; | |
5f39d397 | 1197 | |
9f5fae2f | 1198 | u32 type; |
13a8a7c8 YZ |
1199 | |
1200 | u64 highest_objectid; | |
7585717f | 1201 | |
05653ef3 | 1202 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
0d4cf4e6 | 1203 | /* only used with CONFIG_BTRFS_FS_RUN_SANITY_TESTS is enabled */ |
faa2dbf0 | 1204 | u64 alloc_bytenr; |
05653ef3 | 1205 | #endif |
faa2dbf0 | 1206 | |
3f157a2f | 1207 | u64 defrag_trans_start; |
6702ed49 | 1208 | struct btrfs_key defrag_progress; |
0ef3e66b | 1209 | struct btrfs_key defrag_max; |
58176a96 | 1210 | char *name; |
0b86a832 CM |
1211 | |
1212 | /* the dirty list is only used by non-reference counted roots */ | |
1213 | struct list_head dirty_list; | |
7b128766 | 1214 | |
5d4f98a2 YZ |
1215 | struct list_head root_list; |
1216 | ||
2ab28f32 JB |
1217 | spinlock_t log_extents_lock[2]; |
1218 | struct list_head logged_list[2]; | |
1219 | ||
d68fc57b | 1220 | spinlock_t orphan_lock; |
8a35d95f | 1221 | atomic_t orphan_inodes; |
d68fc57b | 1222 | struct btrfs_block_rsv *orphan_block_rsv; |
d68fc57b | 1223 | int orphan_cleanup_state; |
3394e160 | 1224 | |
5d4f98a2 YZ |
1225 | spinlock_t inode_lock; |
1226 | /* red-black tree that keeps track of in-memory inodes */ | |
1227 | struct rb_root inode_tree; | |
1228 | ||
16cdcec7 MX |
1229 | /* |
1230 | * radix tree that keeps track of delayed nodes of every inode, | |
1231 | * protected by inode_lock | |
1232 | */ | |
1233 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1234 | /* |
1235 | * right now this just gets used so that a root has its own devid | |
1236 | * for stat. It may be used for more later | |
1237 | */ | |
0ee5dc67 | 1238 | dev_t anon_dev; |
f1ebcc74 | 1239 | |
5f3ab90a | 1240 | spinlock_t root_item_lock; |
0700cea7 | 1241 | refcount_t refs; |
eb73c1b7 | 1242 | |
573bfb72 | 1243 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1244 | spinlock_t delalloc_lock; |
1245 | /* | |
1246 | * all of the inodes that have delalloc bytes. It is possible for | |
1247 | * this list to be empty even when there is still dirty data=ordered | |
1248 | * extents waiting to finish IO. | |
1249 | */ | |
1250 | struct list_head delalloc_inodes; | |
1251 | struct list_head delalloc_root; | |
1252 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1253 | |
1254 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1255 | /* |
1256 | * this is used by the balancing code to wait for all the pending | |
1257 | * ordered extents | |
1258 | */ | |
1259 | spinlock_t ordered_extent_lock; | |
1260 | ||
1261 | /* | |
1262 | * all of the data=ordered extents pending writeback | |
1263 | * these can span multiple transactions and basically include | |
1264 | * every dirty data page that isn't from nodatacow | |
1265 | */ | |
1266 | struct list_head ordered_extents; | |
1267 | struct list_head ordered_root; | |
1268 | u64 nr_ordered_extents; | |
2c686537 DS |
1269 | |
1270 | /* | |
1271 | * Number of currently running SEND ioctls to prevent | |
1272 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1273 | */ | |
1274 | int send_in_progress; | |
8257b2dc MX |
1275 | struct btrfs_subvolume_writers *subv_writers; |
1276 | atomic_t will_be_snapshoted; | |
55eeaf05 QW |
1277 | |
1278 | /* For qgroup metadata space reserve */ | |
ce0dcee6 | 1279 | atomic64_t qgroup_meta_rsv; |
62e2749e | 1280 | }; |
da17066c JM |
1281 | static inline u32 btrfs_inode_sectorsize(const struct inode *inode) |
1282 | { | |
1283 | return btrfs_sb(inode->i_sb)->sectorsize; | |
1284 | } | |
62e2749e | 1285 | |
1db1ff92 JM |
1286 | static inline u32 __BTRFS_LEAF_DATA_SIZE(u32 blocksize) |
1287 | { | |
1288 | return blocksize - sizeof(struct btrfs_header); | |
1289 | } | |
1290 | ||
da17066c | 1291 | static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1292 | { |
da17066c | 1293 | return __BTRFS_LEAF_DATA_SIZE(info->nodesize); |
1db1ff92 JM |
1294 | } |
1295 | ||
da17066c | 1296 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1297 | { |
da17066c | 1298 | return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item); |
1db1ff92 JM |
1299 | } |
1300 | ||
da17066c | 1301 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info) |
1db1ff92 | 1302 | { |
da17066c | 1303 | return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr); |
1db1ff92 JM |
1304 | } |
1305 | ||
1306 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ | |
1307 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
da17066c | 1308 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1309 | { |
da17066c | 1310 | return BTRFS_MAX_ITEM_SIZE(info) - |
1db1ff92 JM |
1311 | BTRFS_FILE_EXTENT_INLINE_DATA_START; |
1312 | } | |
1313 | ||
da17066c | 1314 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1315 | { |
da17066c | 1316 | return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item); |
1db1ff92 JM |
1317 | } |
1318 | ||
0942caa3 DS |
1319 | /* |
1320 | * Flags for mount options. | |
1321 | * | |
1322 | * Note: don't forget to add new options to btrfs_show_options() | |
1323 | */ | |
21ad10cf CM |
1324 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1325 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1326 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1327 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1328 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1329 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1330 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1331 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1332 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1333 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1334 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1335 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1336 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1337 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1338 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1339 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1340 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1341 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
8dcddfa0 | 1342 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
9555c6c1 | 1343 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1344 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1345 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1346 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 1347 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
d0bd4560 JB |
1348 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
1349 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) | |
f7d3d2f9 | 1350 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
96da0919 | 1351 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
b6cda9bc | 1352 | |
8b87dc17 | 1353 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1354 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1355 | |
b6cda9bc CM |
1356 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1357 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1358 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
3cdde224 | 1359 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
b6cda9bc | 1360 | BTRFS_MOUNT_##opt) |
572d9ab7 | 1361 | |
3cdde224 | 1362 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1363 | { \ |
3cdde224 JM |
1364 | if (!btrfs_test_opt(fs_info, opt)) \ |
1365 | btrfs_info(fs_info, fmt, ##args); \ | |
1366 | btrfs_set_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1367 | } |
1368 | ||
3cdde224 | 1369 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1370 | { \ |
3cdde224 JM |
1371 | if (btrfs_test_opt(fs_info, opt)) \ |
1372 | btrfs_info(fs_info, fmt, ##args); \ | |
1373 | btrfs_clear_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1374 | } |
1375 | ||
d0bd4560 JB |
1376 | #ifdef CONFIG_BTRFS_DEBUG |
1377 | static inline int | |
2ff7e61e | 1378 | btrfs_should_fragment_free_space(struct btrfs_block_group_cache *block_group) |
d0bd4560 | 1379 | { |
2ff7e61e | 1380 | struct btrfs_fs_info *fs_info = block_group->fs_info; |
0b246afa JM |
1381 | |
1382 | return (btrfs_test_opt(fs_info, FRAGMENT_METADATA) && | |
d0bd4560 | 1383 | block_group->flags & BTRFS_BLOCK_GROUP_METADATA) || |
0b246afa | 1384 | (btrfs_test_opt(fs_info, FRAGMENT_DATA) && |
d0bd4560 JB |
1385 | block_group->flags & BTRFS_BLOCK_GROUP_DATA); |
1386 | } | |
1387 | #endif | |
1388 | ||
572d9ab7 DS |
1389 | /* |
1390 | * Requests for changes that need to be done during transaction commit. | |
1391 | * | |
1392 | * Internal mount options that are used for special handling of the real | |
1393 | * mount options (eg. cannot be set during remount and have to be set during | |
1394 | * transaction commit) | |
1395 | */ | |
1396 | ||
7e1876ac DS |
1397 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
1398 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) | |
d51033d0 | 1399 | #define BTRFS_PENDING_COMMIT (2) |
7e1876ac | 1400 | |
572d9ab7 DS |
1401 | #define btrfs_test_pending(info, opt) \ |
1402 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1403 | #define btrfs_set_pending(info, opt) \ | |
1404 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1405 | #define btrfs_clear_pending(info, opt) \ | |
1406 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1407 | ||
1408 | /* | |
1409 | * Helpers for setting pending mount option changes. | |
1410 | * | |
1411 | * Expects corresponding macros | |
1412 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1413 | */ | |
1414 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1415 | do { \ | |
1416 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1417 | btrfs_info((info), fmt, ##args); \ | |
1418 | btrfs_set_pending((info), SET_##opt); \ | |
1419 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1420 | } \ | |
1421 | } while(0) | |
1422 | ||
1423 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1424 | do { \ | |
1425 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1426 | btrfs_info((info), fmt, ##args); \ | |
1427 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1428 | btrfs_clear_pending((info), SET_##opt); \ | |
1429 | } \ | |
1430 | } while(0) | |
1431 | ||
b98b6767 Y |
1432 | /* |
1433 | * Inode flags | |
1434 | */ | |
fdebe2bd Y |
1435 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1436 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1437 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1438 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1439 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1440 | #define BTRFS_INODE_SYNC (1 << 5) |
1441 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1442 | #define BTRFS_INODE_APPEND (1 << 7) | |
1443 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1444 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1445 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1446 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1447 | |
08fe4db1 LZ |
1448 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1449 | ||
cfed81a0 CM |
1450 | struct btrfs_map_token { |
1451 | struct extent_buffer *eb; | |
1452 | char *kaddr; | |
1453 | unsigned long offset; | |
1454 | }; | |
1455 | ||
2e78c927 CR |
1456 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
1457 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) | |
1458 | ||
cfed81a0 CM |
1459 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
1460 | { | |
ad914559 | 1461 | token->kaddr = NULL; |
cfed81a0 CM |
1462 | } |
1463 | ||
01327610 | 1464 | /* some macros to generate set/get functions for the struct fields. This |
5f39d397 CM |
1465 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
1466 | * one for u8: | |
1467 | */ | |
1468 | #define le8_to_cpu(v) (v) | |
1469 | #define cpu_to_le8(v) (v) | |
1470 | #define __le8 u8 | |
1471 | ||
62e85577 | 1472 | #define read_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1473 | read_extent_buffer(eb, (char *)(result), \ |
1474 | ((unsigned long)(ptr)) + \ | |
1475 | offsetof(type, member), \ | |
1476 | sizeof(((type *)0)->member))) | |
1477 | ||
62e85577 | 1478 | #define write_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1479 | write_extent_buffer(eb, (char *)(result), \ |
1480 | ((unsigned long)(ptr)) + \ | |
1481 | offsetof(type, member), \ | |
1482 | sizeof(((type *)0)->member))) | |
1483 | ||
18077bb4 LZ |
1484 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1485 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1486 | unsigned long off, \ | |
1487 | struct btrfs_map_token *token); \ | |
1488 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1489 | unsigned long off, u##bits val, \ | |
1490 | struct btrfs_map_token *token); \ | |
1491 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ | |
1492 | unsigned long off) \ | |
1493 | { \ | |
1494 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1495 | } \ | |
1496 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ | |
1497 | unsigned long off, u##bits val) \ | |
1498 | { \ | |
1499 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1500 | } | |
1501 | ||
1502 | DECLARE_BTRFS_SETGET_BITS(8) | |
1503 | DECLARE_BTRFS_SETGET_BITS(16) | |
1504 | DECLARE_BTRFS_SETGET_BITS(32) | |
1505 | DECLARE_BTRFS_SETGET_BITS(64) | |
1506 | ||
5f39d397 | 1507 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
18077bb4 LZ |
1508 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
1509 | { \ | |
1510 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1511 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1512 | } \ | |
1513 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1514 | u##bits val) \ | |
1515 | { \ | |
1516 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1517 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1518 | } \ | |
1519 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ | |
1520 | struct btrfs_map_token *token) \ | |
1521 | { \ | |
1522 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1523 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1524 | } \ | |
1525 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
1526 | type *s, u##bits val, \ | |
1527 | struct btrfs_map_token *token) \ | |
1528 | { \ | |
1529 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1530 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
1531 | } | |
5f39d397 CM |
1532 | |
1533 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1534 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1535 | { \ | |
727011e0 | 1536 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1537 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1538 | return res; \ |
5f39d397 CM |
1539 | } \ |
1540 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1541 | u##bits val) \ | |
1542 | { \ | |
727011e0 | 1543 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1544 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1545 | } |
9078a3e1 | 1546 | |
5f39d397 CM |
1547 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1548 | static inline u##bits btrfs_##name(type *s) \ | |
1549 | { \ | |
1550 | return le##bits##_to_cpu(s->member); \ | |
1551 | } \ | |
1552 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1553 | { \ | |
1554 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1555 | } |
1556 | ||
0b86a832 CM |
1557 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1558 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1559 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1560 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1561 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1562 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1563 | start_offset, 64); | |
0b86a832 CM |
1564 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1565 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1566 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1567 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1568 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1569 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1570 | |
8a4b83cc CM |
1571 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1572 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1573 | total_bytes, 64); | |
1574 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1575 | bytes_used, 64); | |
1576 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1577 | io_align, 32); | |
1578 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1579 | io_width, 32); | |
1580 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1581 | sector_size, 32); | |
1582 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1583 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1584 | dev_group, 32); | |
1585 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1586 | seek_speed, 8); | |
1587 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1588 | bandwidth, 8); | |
2b82032c YZ |
1589 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1590 | generation, 64); | |
8a4b83cc | 1591 | |
410ba3a2 | 1592 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1593 | { |
410ba3a2 | 1594 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1595 | } |
1596 | ||
1473b24e | 1597 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1598 | { |
1473b24e | 1599 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1600 | } |
1601 | ||
e17cade2 | 1602 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1603 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1604 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1605 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1606 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1607 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1608 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1609 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1610 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1611 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1612 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1613 | ||
e17cade2 CM |
1614 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1615 | { | |
1616 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1617 | } | |
1618 | ||
1619 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1620 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1621 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1622 | stripe_len, 64); | |
1623 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1624 | io_align, 32); | |
1625 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1626 | io_width, 32); | |
1627 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1628 | sector_size, 32); | |
1629 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1630 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1631 | num_stripes, 16); | |
321aecc6 CM |
1632 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1633 | sub_stripes, 16); | |
0b86a832 CM |
1634 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1635 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1636 | ||
1637 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1638 | int nr) | |
1639 | { | |
1640 | unsigned long offset = (unsigned long)c; | |
1641 | offset += offsetof(struct btrfs_chunk, stripe); | |
1642 | offset += nr * sizeof(struct btrfs_stripe); | |
1643 | return (struct btrfs_stripe *)offset; | |
1644 | } | |
1645 | ||
a443755f CM |
1646 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1647 | { | |
1648 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1649 | } | |
1650 | ||
0b86a832 CM |
1651 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1652 | struct btrfs_chunk *c, int nr) | |
1653 | { | |
1654 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1655 | } | |
1656 | ||
0b86a832 CM |
1657 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1658 | struct btrfs_chunk *c, int nr) | |
1659 | { | |
1660 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1661 | } | |
1662 | ||
5f39d397 CM |
1663 | /* struct btrfs_block_group_item */ |
1664 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1665 | used, 64); | |
1666 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1667 | used, 64); | |
0b86a832 CM |
1668 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1669 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1670 | |
1671 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1672 | struct btrfs_block_group_item, chunk_objectid, 64); |
1673 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1674 | struct btrfs_block_group_item, flags, 64); | |
1675 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1676 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1677 | |
208acb8c OS |
1678 | /* struct btrfs_free_space_info */ |
1679 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1680 | extent_count, 32); | |
1681 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1682 | ||
3954401f CM |
1683 | /* struct btrfs_inode_ref */ |
1684 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1685 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1686 | |
f186373f MF |
1687 | /* struct btrfs_inode_extref */ |
1688 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1689 | parent_objectid, 64); | |
1690 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1691 | name_len, 16); | |
1692 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1693 | ||
5f39d397 CM |
1694 | /* struct btrfs_inode_item */ |
1695 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1696 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1697 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1698 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1699 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1700 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1701 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1702 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1703 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1704 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1705 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1706 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1707 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1708 | generation, 64); | |
1709 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1710 | sequence, 64); | |
1711 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1712 | transid, 64); | |
1713 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1714 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1715 | nbytes, 64); | |
1716 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1717 | block_group, 64); | |
1718 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1719 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1720 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1721 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1722 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1723 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1724 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1725 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1726 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1727 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1728 | |
0b86a832 | 1729 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1730 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1731 | chunk_tree, 64); | |
1732 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1733 | chunk_objectid, 64); | |
1734 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1735 | chunk_offset, 64); | |
0b86a832 CM |
1736 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1737 | ||
231e88f4 | 1738 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
1739 | { |
1740 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 1741 | return (unsigned long)dev + ptr; |
e17cade2 CM |
1742 | } |
1743 | ||
5d4f98a2 YZ |
1744 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1745 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1746 | generation, 64); | |
1747 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1748 | |
5d4f98a2 YZ |
1749 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1750 | ||
1751 | ||
1752 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1753 | ||
1754 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1755 | struct btrfs_tree_block_info *item, | |
1756 | struct btrfs_disk_key *key) | |
1757 | { | |
1758 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1759 | } | |
1760 | ||
1761 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1762 | struct btrfs_tree_block_info *item, | |
1763 | struct btrfs_disk_key *key) | |
1764 | { | |
1765 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1766 | } | |
e20d96d6 | 1767 | |
5d4f98a2 YZ |
1768 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1769 | root, 64); | |
1770 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1771 | objectid, 64); | |
1772 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1773 | offset, 64); | |
1774 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1775 | count, 32); | |
1776 | ||
1777 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1778 | count, 32); | |
1779 | ||
1780 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1781 | type, 8); | |
1782 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1783 | offset, 64); | |
1784 | ||
1785 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1786 | { | |
1787 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1788 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1789 | return sizeof(struct btrfs_extent_inline_ref); | |
1790 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1791 | return sizeof(struct btrfs_shared_data_ref) + | |
1792 | sizeof(struct btrfs_extent_inline_ref); | |
1793 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1794 | return sizeof(struct btrfs_extent_data_ref) + | |
1795 | offsetof(struct btrfs_extent_inline_ref, offset); | |
1796 | BUG(); | |
1797 | return 0; | |
1798 | } | |
1799 | ||
1800 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1801 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1802 | generation, 64); | |
1803 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1804 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1805 | |
5f39d397 CM |
1806 | /* struct btrfs_node */ |
1807 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1808 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
1809 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
1810 | blockptr, 64); | |
1811 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
1812 | generation, 64); | |
e20d96d6 | 1813 | |
5f39d397 | 1814 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1815 | { |
5f39d397 CM |
1816 | unsigned long ptr; |
1817 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1818 | sizeof(struct btrfs_key_ptr) * nr; | |
1819 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1820 | } |
1821 | ||
5f39d397 CM |
1822 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1823 | int nr, u64 val) | |
cf27e1ee | 1824 | { |
5f39d397 CM |
1825 | unsigned long ptr; |
1826 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1827 | sizeof(struct btrfs_key_ptr) * nr; | |
1828 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1829 | } |
1830 | ||
74493f7a CM |
1831 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1832 | { | |
1833 | unsigned long ptr; | |
1834 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1835 | sizeof(struct btrfs_key_ptr) * nr; | |
1836 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1837 | } | |
1838 | ||
1839 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1840 | int nr, u64 val) | |
1841 | { | |
1842 | unsigned long ptr; | |
1843 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1844 | sizeof(struct btrfs_key_ptr) * nr; | |
1845 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1846 | } | |
1847 | ||
810191ff | 1848 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1849 | { |
5f39d397 CM |
1850 | return offsetof(struct btrfs_node, ptrs) + |
1851 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1852 | } |
1853 | ||
e644d021 CM |
1854 | void btrfs_node_key(struct extent_buffer *eb, |
1855 | struct btrfs_disk_key *disk_key, int nr); | |
1856 | ||
5f39d397 CM |
1857 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1858 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1859 | { |
5f39d397 CM |
1860 | unsigned long ptr; |
1861 | ptr = btrfs_node_key_ptr_offset(nr); | |
1862 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1863 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1864 | } |
1865 | ||
5f39d397 CM |
1866 | /* struct btrfs_item */ |
1867 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1868 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
1869 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
1870 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 1871 | |
5f39d397 | 1872 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1873 | { |
5f39d397 CM |
1874 | return offsetof(struct btrfs_leaf, items) + |
1875 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1876 | } |
1877 | ||
dd3cc16b | 1878 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 1879 | { |
5f39d397 | 1880 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1881 | } |
1882 | ||
5f39d397 CM |
1883 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1884 | struct btrfs_item *item) | |
0783fcfc | 1885 | { |
5f39d397 | 1886 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1887 | } |
1888 | ||
5f39d397 | 1889 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1890 | { |
dd3cc16b | 1891 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1892 | } |
1893 | ||
5f39d397 | 1894 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1895 | { |
dd3cc16b | 1896 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1897 | } |
1898 | ||
5f39d397 | 1899 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1900 | { |
dd3cc16b | 1901 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1902 | } |
1903 | ||
5f39d397 CM |
1904 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1905 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1906 | { |
dd3cc16b | 1907 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1908 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1909 | } |
1910 | ||
5f39d397 CM |
1911 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1912 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1913 | { |
dd3cc16b | 1914 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1915 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1916 | } |
1917 | ||
e02119d5 CM |
1918 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1919 | ||
0660b5af CM |
1920 | /* |
1921 | * struct btrfs_root_ref | |
1922 | */ | |
1923 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1924 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1925 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1926 | ||
5f39d397 | 1927 | /* struct btrfs_dir_item */ |
5103e947 | 1928 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1929 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1930 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1931 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
1932 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
1933 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
1934 | data_len, 16); | |
1935 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
1936 | name_len, 16); | |
1937 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
1938 | transid, 64); | |
1d4f6404 | 1939 | |
5f39d397 CM |
1940 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1941 | struct btrfs_dir_item *item, | |
1942 | struct btrfs_disk_key *key) | |
1d4f6404 | 1943 | { |
5f39d397 | 1944 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1945 | } |
1946 | ||
5f39d397 CM |
1947 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1948 | struct btrfs_dir_item *item, | |
1949 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1950 | { |
5f39d397 | 1951 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1952 | } |
1953 | ||
0af3d00b JB |
1954 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1955 | num_entries, 64); | |
1956 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1957 | num_bitmaps, 64); | |
1958 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1959 | generation, 64); | |
1960 | ||
1961 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
1962 | struct btrfs_free_space_header *h, | |
1963 | struct btrfs_disk_key *key) | |
1964 | { | |
1965 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1966 | } | |
1967 | ||
1968 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1969 | struct btrfs_free_space_header *h, | |
1970 | struct btrfs_disk_key *key) | |
1971 | { | |
1972 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1973 | } | |
1974 | ||
5f39d397 CM |
1975 | /* struct btrfs_disk_key */ |
1976 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1977 | objectid, 64); | |
1978 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1979 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1980 | |
e2fa7227 | 1981 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
310712b2 | 1982 | const struct btrfs_disk_key *disk) |
e2fa7227 CM |
1983 | { |
1984 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1985 | cpu->type = disk->type; |
e2fa7227 CM |
1986 | cpu->objectid = le64_to_cpu(disk->objectid); |
1987 | } | |
1988 | ||
1989 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
310712b2 | 1990 | const struct btrfs_key *cpu) |
e2fa7227 CM |
1991 | { |
1992 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1993 | disk->type = cpu->type; |
e2fa7227 CM |
1994 | disk->objectid = cpu_to_le64(cpu->objectid); |
1995 | } | |
1996 | ||
5f39d397 CM |
1997 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1998 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1999 | { |
5f39d397 CM |
2000 | struct btrfs_disk_key disk_key; |
2001 | btrfs_node_key(eb, &disk_key, nr); | |
2002 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2003 | } |
2004 | ||
5f39d397 CM |
2005 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
2006 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2007 | { |
5f39d397 CM |
2008 | struct btrfs_disk_key disk_key; |
2009 | btrfs_item_key(eb, &disk_key, nr); | |
2010 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2011 | } |
2012 | ||
5f39d397 CM |
2013 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
2014 | struct btrfs_dir_item *item, | |
2015 | struct btrfs_key *key) | |
4d775673 | 2016 | { |
5f39d397 CM |
2017 | struct btrfs_disk_key disk_key; |
2018 | btrfs_dir_item_key(eb, item, &disk_key); | |
2019 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2020 | } |
2021 | ||
310712b2 | 2022 | static inline u8 btrfs_key_type(const struct btrfs_key *key) |
3768f368 | 2023 | { |
5f39d397 | 2024 | return key->type; |
3768f368 CM |
2025 | } |
2026 | ||
5f39d397 | 2027 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2028 | { |
5f39d397 | 2029 | key->type = val; |
3768f368 CM |
2030 | } |
2031 | ||
5f39d397 | 2032 | /* struct btrfs_header */ |
db94535d | 2033 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2034 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2035 | generation, 64); | |
2036 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2037 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2038 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2039 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2040 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2041 | generation, 64); | |
2042 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2043 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2044 | nritems, 32); | |
2045 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2046 | |
63b10fc4 CM |
2047 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
2048 | { | |
2049 | return (btrfs_header_flags(eb) & flag) == flag; | |
2050 | } | |
2051 | ||
2052 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2053 | { | |
2054 | u64 flags = btrfs_header_flags(eb); | |
2055 | btrfs_set_header_flags(eb, flags | flag); | |
2056 | return (flags & flag) == flag; | |
2057 | } | |
2058 | ||
2059 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2060 | { | |
2061 | u64 flags = btrfs_header_flags(eb); | |
2062 | btrfs_set_header_flags(eb, flags & ~flag); | |
2063 | return (flags & flag) == flag; | |
2064 | } | |
2065 | ||
5d4f98a2 YZ |
2066 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2067 | { | |
2068 | u64 flags = btrfs_header_flags(eb); | |
2069 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2070 | } | |
2071 | ||
2072 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2073 | int rev) | |
2074 | { | |
2075 | u64 flags = btrfs_header_flags(eb); | |
2076 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2077 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2078 | btrfs_set_header_flags(eb, flags); | |
2079 | } | |
2080 | ||
0a4e5586 | 2081 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2082 | { |
fba6aa75 | 2083 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2084 | } |
2085 | ||
b308bc2f | 2086 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
e17cade2 | 2087 | { |
b308bc2f | 2088 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2089 | } |
2090 | ||
5f39d397 | 2091 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2092 | { |
d397712b | 2093 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2094 | } |
2095 | ||
5f39d397 | 2096 | /* struct btrfs_root_item */ |
84234f3a YZ |
2097 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2098 | generation, 64); | |
5f39d397 | 2099 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2100 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2101 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2102 | |
84234f3a YZ |
2103 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2104 | generation, 64); | |
db94535d CM |
2105 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2106 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2107 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2108 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2109 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2110 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2111 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2112 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2113 | last_snapshot, 64); | |
8ea05e3a AB |
2114 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2115 | generation_v2, 64); | |
2116 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2117 | ctransid, 64); | |
2118 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2119 | otransid, 64); | |
2120 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2121 | stransid, 64); | |
2122 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2123 | rtransid, 64); | |
123abc88 | 2124 | |
b83cc969 LZ |
2125 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2126 | { | |
6ed3cf2c | 2127 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2128 | } |
2129 | ||
521e0546 DS |
2130 | static inline bool btrfs_root_dead(struct btrfs_root *root) |
2131 | { | |
2132 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2133 | } | |
2134 | ||
af31f5e5 CM |
2135 | /* struct btrfs_root_backup */ |
2136 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2137 | tree_root, 64); | |
2138 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2139 | tree_root_gen, 64); | |
2140 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2141 | tree_root_level, 8); | |
2142 | ||
2143 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2144 | chunk_root, 64); | |
2145 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2146 | chunk_root_gen, 64); | |
2147 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2148 | chunk_root_level, 8); | |
2149 | ||
2150 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2151 | extent_root, 64); | |
2152 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2153 | extent_root_gen, 64); | |
2154 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2155 | extent_root_level, 8); | |
2156 | ||
2157 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2158 | fs_root, 64); | |
2159 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2160 | fs_root_gen, 64); | |
2161 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2162 | fs_root_level, 8); | |
2163 | ||
2164 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2165 | dev_root, 64); | |
2166 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2167 | dev_root_gen, 64); | |
2168 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2169 | dev_root_level, 8); | |
2170 | ||
2171 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2172 | csum_root, 64); | |
2173 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2174 | csum_root_gen, 64); | |
2175 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2176 | csum_root_level, 8); | |
2177 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2178 | total_bytes, 64); | |
2179 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2180 | bytes_used, 64); | |
2181 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2182 | num_devices, 64); | |
2183 | ||
0940ebf6 ID |
2184 | /* struct btrfs_balance_item */ |
2185 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2186 | |
0940ebf6 ID |
2187 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2188 | struct btrfs_balance_item *bi, | |
2189 | struct btrfs_disk_balance_args *ba) | |
2190 | { | |
2191 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2192 | } | |
2193 | ||
2194 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2195 | struct btrfs_balance_item *bi, | |
2196 | struct btrfs_disk_balance_args *ba) | |
2197 | { | |
2198 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2199 | } | |
2200 | ||
2201 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2202 | struct btrfs_balance_item *bi, | |
2203 | struct btrfs_disk_balance_args *ba) | |
2204 | { | |
2205 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2206 | } | |
2207 | ||
2208 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2209 | struct btrfs_balance_item *bi, | |
2210 | struct btrfs_disk_balance_args *ba) | |
2211 | { | |
2212 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2213 | } | |
2214 | ||
2215 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2216 | struct btrfs_balance_item *bi, | |
2217 | struct btrfs_disk_balance_args *ba) | |
2218 | { | |
2219 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2220 | } | |
2221 | ||
2222 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2223 | struct btrfs_balance_item *bi, | |
2224 | struct btrfs_disk_balance_args *ba) | |
2225 | { | |
2226 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2227 | } | |
2228 | ||
2229 | static inline void | |
2230 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2231 | struct btrfs_disk_balance_args *disk) | |
2232 | { | |
2233 | memset(cpu, 0, sizeof(*cpu)); | |
2234 | ||
2235 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2236 | cpu->usage = le64_to_cpu(disk->usage); | |
2237 | cpu->devid = le64_to_cpu(disk->devid); | |
2238 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2239 | cpu->pend = le64_to_cpu(disk->pend); | |
2240 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2241 | cpu->vend = le64_to_cpu(disk->vend); | |
2242 | cpu->target = le64_to_cpu(disk->target); | |
2243 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2244 | cpu->limit = le64_to_cpu(disk->limit); |
ed0df618 DS |
2245 | cpu->stripes_min = le32_to_cpu(disk->stripes_min); |
2246 | cpu->stripes_max = le32_to_cpu(disk->stripes_max); | |
0940ebf6 ID |
2247 | } |
2248 | ||
2249 | static inline void | |
2250 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2251 | struct btrfs_balance_args *cpu) | |
2252 | { | |
2253 | memset(disk, 0, sizeof(*disk)); | |
2254 | ||
2255 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2256 | disk->usage = cpu_to_le64(cpu->usage); | |
2257 | disk->devid = cpu_to_le64(cpu->devid); | |
2258 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2259 | disk->pend = cpu_to_le64(cpu->pend); | |
2260 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2261 | disk->vend = cpu_to_le64(cpu->vend); | |
2262 | disk->target = cpu_to_le64(cpu->target); | |
2263 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2264 | disk->limit = cpu_to_le64(cpu->limit); |
ed0df618 DS |
2265 | disk->stripes_min = cpu_to_le32(cpu->stripes_min); |
2266 | disk->stripes_max = cpu_to_le32(cpu->stripes_max); | |
0940ebf6 ID |
2267 | } |
2268 | ||
2269 | /* struct btrfs_super_block */ | |
db94535d | 2270 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2271 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2272 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2273 | generation, 64); | |
2274 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2275 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2276 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2277 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2278 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2279 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2280 | root_level, 8); | |
0b86a832 CM |
2281 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2282 | chunk_root, 64); | |
2283 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2284 | chunk_root_level, 8); |
2285 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2286 | log_root, 64); | |
c3027eb5 CM |
2287 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2288 | log_root_transid, 64); | |
e02119d5 CM |
2289 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2290 | log_root_level, 8); | |
db94535d CM |
2291 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2292 | total_bytes, 64); | |
2293 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2294 | bytes_used, 64); | |
5f39d397 CM |
2295 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2296 | sectorsize, 32); | |
2297 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2298 | nodesize, 32); | |
87ee04eb CM |
2299 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2300 | stripesize, 32); | |
5f39d397 CM |
2301 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2302 | root_dir_objectid, 64); | |
8a4b83cc CM |
2303 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2304 | num_devices, 64); | |
f2b636e8 JB |
2305 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2306 | compat_flags, 64); | |
2307 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2308 | compat_ro_flags, 64); |
f2b636e8 JB |
2309 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2310 | incompat_flags, 64); | |
607d432d JB |
2311 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2312 | csum_type, 16); | |
0af3d00b JB |
2313 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2314 | cache_generation, 64); | |
3cae210f | 2315 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2316 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2317 | uuid_tree_generation, 64); | |
607d432d JB |
2318 | |
2319 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2320 | { | |
1104a885 DS |
2321 | u16 t = btrfs_super_csum_type(s); |
2322 | /* | |
2323 | * csum type is validated at mount time | |
2324 | */ | |
607d432d JB |
2325 | return btrfs_csum_sizes[t]; |
2326 | } | |
2e635a27 | 2327 | |
5f39d397 | 2328 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2329 | { |
5f39d397 | 2330 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2331 | } |
2332 | ||
851cd173 LB |
2333 | /* |
2334 | * The leaf data grows from end-to-front in the node. | |
2335 | * this returns the address of the start of the last item, | |
2336 | * which is the stop of the leaf data stack | |
2337 | */ | |
2ff7e61e | 2338 | static inline unsigned int leaf_data_end(struct btrfs_fs_info *fs_info, |
851cd173 LB |
2339 | struct extent_buffer *leaf) |
2340 | { | |
2341 | u32 nr = btrfs_header_nritems(leaf); | |
2342 | ||
2343 | if (nr == 0) | |
0b246afa | 2344 | return BTRFS_LEAF_DATA_SIZE(fs_info); |
851cd173 LB |
2345 | return btrfs_item_offset_nr(leaf, nr - 1); |
2346 | } | |
2347 | ||
5f39d397 CM |
2348 | /* struct btrfs_file_extent_item */ |
2349 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2350 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2351 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2352 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2353 | struct btrfs_file_extent_item, offset, 64); | |
2354 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2355 | struct btrfs_file_extent_item, generation, 64); | |
2356 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2357 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2358 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2359 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2360 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2361 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2362 | |
d397712b CM |
2363 | static inline unsigned long |
2364 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2365 | { |
7ec20afb | 2366 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2367 | } |
2368 | ||
2369 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2370 | { | |
7ec20afb | 2371 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2372 | } |
2373 | ||
db94535d CM |
2374 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2375 | disk_bytenr, 64); | |
5f39d397 CM |
2376 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2377 | generation, 64); | |
db94535d CM |
2378 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2379 | disk_num_bytes, 64); | |
5f39d397 CM |
2380 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2381 | offset, 64); | |
db94535d CM |
2382 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2383 | num_bytes, 64); | |
c8b97818 CM |
2384 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2385 | ram_bytes, 64); | |
2386 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2387 | compression, 8); | |
2388 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2389 | encryption, 8); | |
2390 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2391 | other_encoding, 16); | |
2392 | ||
c8b97818 CM |
2393 | /* |
2394 | * this returns the number of bytes used by the item on disk, minus the | |
2395 | * size of any extent headers. If a file is compressed on disk, this is | |
2396 | * the compressed size | |
2397 | */ | |
2398 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2399 | struct btrfs_item *e) | |
2400 | { | |
7ec20afb | 2401 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2402 | } |
9f5fae2f | 2403 | |
514ac8ad CM |
2404 | /* this returns the number of file bytes represented by the inline item. |
2405 | * If an item is compressed, this is the uncompressed size | |
2406 | */ | |
2407 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2408 | int slot, | |
2409 | struct btrfs_file_extent_item *fi) | |
2410 | { | |
2411 | struct btrfs_map_token token; | |
2412 | ||
2413 | btrfs_init_map_token(&token); | |
2414 | /* | |
2415 | * return the space used on disk if this item isn't | |
2416 | * compressed or encoded | |
2417 | */ | |
2418 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && | |
2419 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && | |
2420 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { | |
2421 | return btrfs_file_extent_inline_item_len(eb, | |
2422 | btrfs_item_nr(slot)); | |
2423 | } | |
2424 | ||
2425 | /* otherwise use the ram bytes field */ | |
2426 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); | |
2427 | } | |
2428 | ||
2429 | ||
733f4fbb SB |
2430 | /* btrfs_dev_stats_item */ |
2431 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
2432 | struct btrfs_dev_stats_item *ptr, | |
2433 | int index) | |
2434 | { | |
2435 | u64 val; | |
2436 | ||
2437 | read_extent_buffer(eb, &val, | |
2438 | offsetof(struct btrfs_dev_stats_item, values) + | |
2439 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2440 | sizeof(val)); | |
2441 | return val; | |
2442 | } | |
2443 | ||
2444 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2445 | struct btrfs_dev_stats_item *ptr, | |
2446 | int index, u64 val) | |
2447 | { | |
2448 | write_extent_buffer(eb, &val, | |
2449 | offsetof(struct btrfs_dev_stats_item, values) + | |
2450 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2451 | sizeof(val)); | |
2452 | } | |
2453 | ||
630dc772 AJ |
2454 | /* btrfs_qgroup_status_item */ |
2455 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2456 | generation, 64); | |
2457 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2458 | version, 64); | |
2459 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2460 | flags, 64); | |
2f232036 JS |
2461 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2462 | rescan, 64); | |
630dc772 AJ |
2463 | |
2464 | /* btrfs_qgroup_info_item */ | |
2465 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2466 | generation, 64); | |
2467 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2468 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2469 | rfer_cmpr, 64); | |
2470 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2471 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2472 | excl_cmpr, 64); | |
2473 | ||
2474 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2475 | struct btrfs_qgroup_info_item, generation, 64); | |
2476 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2477 | rfer, 64); | |
2478 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2479 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2480 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2481 | excl, 64); | |
2482 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2483 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2484 | ||
2485 | /* btrfs_qgroup_limit_item */ | |
2486 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2487 | flags, 64); | |
2488 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2489 | max_rfer, 64); | |
2490 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2491 | max_excl, 64); | |
2492 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2493 | rsv_rfer, 64); | |
2494 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2495 | rsv_excl, 64); | |
2496 | ||
a2bff640 SB |
2497 | /* btrfs_dev_replace_item */ |
2498 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2499 | struct btrfs_dev_replace_item, src_devid, 64); | |
2500 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2501 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2502 | 64); | |
2503 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2504 | replace_state, 64); | |
2505 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2506 | time_started, 64); | |
2507 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2508 | time_stopped, 64); | |
2509 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2510 | num_write_errors, 64); | |
2511 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2512 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2513 | 64); | |
2514 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2515 | cursor_left, 64); | |
2516 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2517 | cursor_right, 64); | |
2518 | ||
2519 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2520 | struct btrfs_dev_replace_item, src_devid, 64); | |
2521 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2522 | struct btrfs_dev_replace_item, | |
2523 | cont_reading_from_srcdev_mode, 64); | |
2524 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2525 | struct btrfs_dev_replace_item, replace_state, 64); | |
2526 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2527 | struct btrfs_dev_replace_item, time_started, 64); | |
2528 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2529 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2530 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2531 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2532 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2533 | struct btrfs_dev_replace_item, | |
2534 | num_uncorrectable_read_errors, 64); | |
2535 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2536 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2537 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2538 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2539 | ||
4beb1b8b CM |
2540 | /* helper function to cast into the data area of the leaf. */ |
2541 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2542 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2543 | btrfs_item_offset_nr(leaf, slot))) |
2544 | ||
2545 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2546 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2547 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2548 | |
67377734 JB |
2549 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2550 | { | |
2551 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2552 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2553 | } | |
2554 | ||
3b16a4e3 JB |
2555 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2556 | { | |
c62d2555 | 2557 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2558 | } |
2559 | ||
b18c6685 | 2560 | /* extent-tree.c */ |
28f75a0e | 2561 | |
2ff7e61e | 2562 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_fs_info *fs_info, u64 csum_bytes); |
28f75a0e | 2563 | |
27965b6c | 2564 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_fs_info *fs_info, |
9e0baf60 | 2565 | unsigned num_items) |
16cdcec7 | 2566 | { |
70e7af24 | 2567 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2568 | } |
2569 | ||
2570 | /* | |
2571 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2572 | * COW. | |
2573 | */ | |
27965b6c | 2574 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info, |
07127184 JB |
2575 | unsigned num_items) |
2576 | { | |
70e7af24 | 2577 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2578 | } |
2579 | ||
1be41b78 | 2580 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
2ff7e61e | 2581 | struct btrfs_fs_info *fs_info); |
0a2b2a84 | 2582 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
2ff7e61e | 2583 | struct btrfs_fs_info *fs_info); |
9cfa3e34 FM |
2584 | void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, |
2585 | const u64 start); | |
2586 | void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); | |
f78c436c FM |
2587 | bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
2588 | void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); | |
2589 | void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg); | |
fa9c0d79 | 2590 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 | 2591 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2ff7e61e JM |
2592 | struct btrfs_fs_info *fs_info, unsigned long count); |
2593 | int btrfs_async_run_delayed_refs(struct btrfs_fs_info *fs_info, | |
31b9655f | 2594 | unsigned long count, u64 transid, int wait); |
2ff7e61e | 2595 | int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len); |
a22285a6 | 2596 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2ff7e61e | 2597 | struct btrfs_fs_info *fs_info, u64 bytenr, |
3173a18f | 2598 | u64 offset, int metadata, u64 *refs, u64 *flags); |
2ff7e61e | 2599 | int btrfs_pin_extent(struct btrfs_fs_info *fs_info, |
11833d66 | 2600 | u64 bytenr, u64 num, int reserved); |
2ff7e61e | 2601 | int btrfs_pin_extent_for_log_replay(struct btrfs_fs_info *fs_info, |
e688b725 | 2602 | u64 bytenr, u64 num_bytes); |
2ff7e61e | 2603 | int btrfs_exclude_logged_extents(struct btrfs_fs_info *fs_info, |
8c2a1a30 | 2604 | struct extent_buffer *eb); |
e4c3b2dc | 2605 | int btrfs_cross_ref_exist(struct btrfs_root *root, |
5d4f98a2 | 2606 | u64 objectid, u64 offset, u64 bytenr); |
d397712b CM |
2607 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2608 | struct btrfs_fs_info *info, | |
2609 | u64 bytenr); | |
758f2dfc | 2610 | void btrfs_get_block_group(struct btrfs_block_group_cache *cache); |
5d4f98a2 | 2611 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
6ab0a202 | 2612 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
4d75f8a9 | 2613 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
310712b2 OS |
2614 | struct btrfs_root *root, |
2615 | u64 parent, u64 root_objectid, | |
2616 | const struct btrfs_disk_key *key, | |
2617 | int level, u64 hint, | |
2618 | u64 empty_size); | |
f0486c68 YZ |
2619 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2620 | struct btrfs_root *root, | |
2621 | struct extent_buffer *buf, | |
5581a51a | 2622 | u64 parent, int last_ref); |
5d4f98a2 | 2623 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
5d4f98a2 | 2624 | u64 root_objectid, u64 owner, |
5846a3c2 QW |
2625 | u64 offset, u64 ram_bytes, |
2626 | struct btrfs_key *ins); | |
5d4f98a2 | 2627 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
2ff7e61e | 2628 | struct btrfs_fs_info *fs_info, |
5d4f98a2 YZ |
2629 | u64 root_objectid, u64 owner, u64 offset, |
2630 | struct btrfs_key *ins); | |
18513091 | 2631 | int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, |
00361589 | 2632 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
e570fd27 | 2633 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2634 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2635 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2636 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2637 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2638 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2ff7e61e | 2639 | struct btrfs_fs_info *fs_info, |
5d4f98a2 | 2640 | u64 bytenr, u64 num_bytes, u64 flags, |
b1c79e09 | 2641 | int level, int is_data); |
31840ae1 | 2642 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2ff7e61e | 2643 | struct btrfs_fs_info *fs_info, |
66d7e7f0 | 2644 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
b06c4bf5 | 2645 | u64 owner, u64 offset); |
5d4f98a2 | 2646 | |
2ff7e61e JM |
2647 | int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info, |
2648 | u64 start, u64 len, int delalloc); | |
2649 | int btrfs_free_and_pin_reserved_extent(struct btrfs_fs_info *fs_info, | |
e688b725 | 2650 | u64 start, u64 len); |
8b74c03e | 2651 | void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info); |
ccd467d6 | 2652 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
2ff7e61e | 2653 | struct btrfs_fs_info *fs_info); |
b18c6685 | 2654 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
2ff7e61e | 2655 | struct btrfs_fs_info *fs_info, |
31840ae1 | 2656 | u64 bytenr, u64 num_bytes, u64 parent, |
b06c4bf5 | 2657 | u64 root_objectid, u64 owner, u64 offset); |
5d4f98a2 | 2658 | |
1bbc621e | 2659 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans, |
2ff7e61e | 2660 | struct btrfs_fs_info *fs_info); |
9078a3e1 | 2661 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2ff7e61e | 2662 | struct btrfs_fs_info *fs_info); |
dcdf7f6d | 2663 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
2ff7e61e JM |
2664 | struct btrfs_fs_info *fs_info); |
2665 | int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr); | |
9078a3e1 | 2666 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
5b4aacef | 2667 | int btrfs_read_block_groups(struct btrfs_fs_info *info); |
6bccf3ab | 2668 | int btrfs_can_relocate(struct btrfs_fs_info *fs_info, u64 bytenr); |
0b86a832 | 2669 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2ff7e61e | 2670 | struct btrfs_fs_info *fs_info, u64 bytes_used, |
e17cade2 | 2671 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2672 | u64 size); |
8eab77ff | 2673 | struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( |
7fd01182 FM |
2674 | struct btrfs_fs_info *fs_info, |
2675 | const u64 chunk_offset); | |
1a40e23b | 2676 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
6bccf3ab | 2677 | struct btrfs_fs_info *fs_info, u64 group_start, |
04216820 | 2678 | struct extent_map *em); |
47ab2a6c | 2679 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
e33e17ee JM |
2680 | void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); |
2681 | void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); | |
ea658bad | 2682 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
2ff7e61e | 2683 | struct btrfs_fs_info *fs_info); |
1b86826d JM |
2684 | u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info); |
2685 | u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info); | |
2686 | u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info); | |
4184ea7f | 2687 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
2688 | |
2689 | enum btrfs_reserve_flush_enum { | |
2690 | /* If we are in the transaction, we can't flush anything.*/ | |
2691 | BTRFS_RESERVE_NO_FLUSH, | |
2692 | /* | |
2693 | * Flushing delalloc may cause deadlock somewhere, in this | |
2694 | * case, use FLUSH LIMIT | |
2695 | */ | |
2696 | BTRFS_RESERVE_FLUSH_LIMIT, | |
2697 | BTRFS_RESERVE_FLUSH_ALL, | |
2698 | }; | |
2699 | ||
f376df2b JB |
2700 | enum btrfs_flush_state { |
2701 | FLUSH_DELAYED_ITEMS_NR = 1, | |
2702 | FLUSH_DELAYED_ITEMS = 2, | |
2703 | FLUSH_DELALLOC = 3, | |
2704 | FLUSH_DELALLOC_WAIT = 4, | |
2705 | ALLOC_CHUNK = 5, | |
2706 | COMMIT_TRANS = 6, | |
2707 | }; | |
2708 | ||
7cf5b976 | 2709 | int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len); |
04f4f916 | 2710 | int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes); |
7cf5b976 | 2711 | void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len); |
51773bec QW |
2712 | void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, |
2713 | u64 len); | |
a22285a6 | 2714 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2ff7e61e | 2715 | struct btrfs_fs_info *fs_info); |
4fbcdf66 | 2716 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
d68fc57b | 2717 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
8ed7a2a0 | 2718 | struct btrfs_inode *inode); |
703b391a | 2719 | void btrfs_orphan_release_metadata(struct btrfs_inode *inode); |
d5c12070 MX |
2720 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2721 | struct btrfs_block_rsv *rsv, | |
2722 | int nitems, | |
ee3441b4 | 2723 | u64 *qgroup_reserved, bool use_global_rsv); |
2ff7e61e | 2724 | void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info, |
7775c818 | 2725 | struct btrfs_block_rsv *rsv); |
9f3db423 | 2726 | int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes); |
691fa059 | 2727 | void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes); |
7cf5b976 QW |
2728 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 start, u64 len); |
2729 | void btrfs_delalloc_release_space(struct inode *inode, u64 start, u64 len); | |
66d8f3dd | 2730 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
2ff7e61e | 2731 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info, |
66d8f3dd | 2732 | unsigned short type); |
2ff7e61e | 2733 | void btrfs_free_block_rsv(struct btrfs_fs_info *fs_info, |
f0486c68 | 2734 | struct btrfs_block_rsv *rsv); |
cdfb080e | 2735 | void __btrfs_free_block_rsv(struct btrfs_block_rsv *rsv); |
4a92b1b8 | 2736 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
2737 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
2738 | enum btrfs_reserve_flush_enum flush); | |
2ff7e61e | 2739 | int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_factor); |
36ba022a | 2740 | int btrfs_block_rsv_refill(struct btrfs_root *root, |
08e007d2 MX |
2741 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
2742 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 | 2743 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
25d609f8 JB |
2744 | struct btrfs_block_rsv *dst_rsv, u64 num_bytes, |
2745 | int update_size); | |
d52be818 JB |
2746 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
2747 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
2748 | int min_factor); | |
2ff7e61e | 2749 | void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info, |
f0486c68 YZ |
2750 | struct btrfs_block_rsv *block_rsv, |
2751 | u64 num_bytes); | |
5e00f193 | 2752 | int btrfs_inc_block_group_ro(struct btrfs_fs_info *fs_info, |
f0486c68 | 2753 | struct btrfs_block_group_cache *cache); |
2ff7e61e | 2754 | void btrfs_dec_block_group_ro(struct btrfs_block_group_cache *cache); |
0af3d00b | 2755 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2756 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
2ff7e61e | 2757 | int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, |
acce952b | 2758 | u64 start, u64 end); |
2ff7e61e | 2759 | int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, |
1edb647b | 2760 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca | 2761 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2ff7e61e JM |
2762 | struct btrfs_fs_info *fs_info, u64 type); |
2763 | int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range); | |
acce952b | 2764 | |
c59021f8 | 2765 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2766 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2767 | struct btrfs_fs_info *fs_info); | |
31e50229 | 2768 | int __get_raid_index(u64 flags); |
9ea24bbe FM |
2769 | int btrfs_start_write_no_snapshoting(struct btrfs_root *root); |
2770 | void btrfs_end_write_no_snapshoting(struct btrfs_root *root); | |
0bc19f90 | 2771 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
39c2d7fa | 2772 | void check_system_chunk(struct btrfs_trans_handle *trans, |
2ff7e61e | 2773 | struct btrfs_fs_info *fs_info, const u64 type); |
a5ed9182 OS |
2774 | u64 add_new_free_space(struct btrfs_block_group_cache *block_group, |
2775 | struct btrfs_fs_info *info, u64 start, u64 end); | |
2776 | ||
dee26a9f | 2777 | /* ctree.c */ |
310712b2 | 2778 | int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key, |
5d4f98a2 | 2779 | int level, int *slot); |
310712b2 | 2780 | int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2); |
0b86a832 CM |
2781 | int btrfs_previous_item(struct btrfs_root *root, |
2782 | struct btrfs_path *path, u64 min_objectid, | |
2783 | int type); | |
ade2e0b3 WS |
2784 | int btrfs_previous_extent_item(struct btrfs_root *root, |
2785 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
2786 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
2787 | struct btrfs_path *path, | |
310712b2 | 2788 | const struct btrfs_key *new_key); |
925baedd CM |
2789 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2790 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2791 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 2792 | struct btrfs_key *key, int lowest_level, |
de78b51a | 2793 | u64 min_trans); |
3f157a2f | 2794 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 2795 | struct btrfs_path *path, |
3f157a2f | 2796 | u64 min_trans); |
7069830a AB |
2797 | enum btrfs_compare_tree_result { |
2798 | BTRFS_COMPARE_TREE_NEW, | |
2799 | BTRFS_COMPARE_TREE_DELETED, | |
2800 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 2801 | BTRFS_COMPARE_TREE_SAME, |
7069830a AB |
2802 | }; |
2803 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, | |
2804 | struct btrfs_root *right_root, | |
2805 | struct btrfs_path *left_path, | |
2806 | struct btrfs_path *right_path, | |
2807 | struct btrfs_key *key, | |
2808 | enum btrfs_compare_tree_result result, | |
2809 | void *ctx); | |
2810 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
2811 | struct btrfs_root *right_root, | |
2812 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
2813 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2814 | struct btrfs_root *root, struct extent_buffer *buf, | |
2815 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2816 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2817 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2818 | struct btrfs_root *root, | |
2819 | struct extent_buffer *buf, | |
2820 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2821 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2822 | struct extent_buffer *buf); | |
2ff7e61e | 2823 | void btrfs_extend_item(struct btrfs_fs_info *fs_info, struct btrfs_path *path, |
143bede5 | 2824 | u32 data_size); |
2ff7e61e JM |
2825 | void btrfs_truncate_item(struct btrfs_fs_info *fs_info, |
2826 | struct btrfs_path *path, u32 new_size, int from_end); | |
459931ec CM |
2827 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2828 | struct btrfs_root *root, | |
2829 | struct btrfs_path *path, | |
310712b2 | 2830 | const struct btrfs_key *new_key, |
459931ec | 2831 | unsigned long split_offset); |
ad48fd75 YZ |
2832 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2833 | struct btrfs_root *root, | |
2834 | struct btrfs_path *path, | |
310712b2 | 2835 | const struct btrfs_key *new_key); |
e33d5c3d KN |
2836 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
2837 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
310712b2 OS |
2838 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2839 | const struct btrfs_key *key, struct btrfs_path *p, | |
2840 | int ins_len, int cow); | |
2841 | int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key, | |
5d9e75c4 | 2842 | struct btrfs_path *p, u64 time_seq); |
2f38b3e1 | 2843 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
310712b2 OS |
2844 | const struct btrfs_key *key, |
2845 | struct btrfs_path *p, int find_higher, | |
2846 | int return_any); | |
6702ed49 | 2847 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2848 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 2849 | int start_slot, u64 *last_ret, |
a6b6e75e | 2850 | struct btrfs_key *progress); |
b3b4aa74 | 2851 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2852 | struct btrfs_path *btrfs_alloc_path(void); |
2853 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2854 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 2855 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 2856 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
2857 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2858 | ||
85e21bac CM |
2859 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2860 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2861 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2862 | struct btrfs_root *root, | |
2863 | struct btrfs_path *path) | |
2864 | { | |
2865 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2866 | } | |
2867 | ||
afe5fea7 | 2868 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
310712b2 | 2869 | const struct btrfs_key *cpu_key, u32 *data_size, |
143bede5 | 2870 | u32 total_data, u32 total_size, int nr); |
310712b2 OS |
2871 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2872 | const struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2873 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2874 | struct btrfs_root *root, | |
2875 | struct btrfs_path *path, | |
310712b2 OS |
2876 | const struct btrfs_key *cpu_key, u32 *data_size, |
2877 | int nr); | |
9c58309d CM |
2878 | |
2879 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2880 | struct btrfs_root *root, | |
2881 | struct btrfs_path *path, | |
310712b2 | 2882 | const struct btrfs_key *key, |
9c58309d CM |
2883 | u32 data_size) |
2884 | { | |
2885 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2886 | } | |
2887 | ||
234b63a0 | 2888 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 2889 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2890 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2891 | u64 time_seq); | |
1c8f52a5 AB |
2892 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2893 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2894 | { |
2895 | ++p->slots[0]; | |
2896 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2897 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2898 | return 0; |
2899 | } | |
1c8f52a5 AB |
2900 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2901 | { | |
2902 | return btrfs_next_old_item(root, p, 0); | |
2903 | } | |
2ff7e61e JM |
2904 | int btrfs_leaf_free_space(struct btrfs_fs_info *fs_info, |
2905 | struct extent_buffer *leaf); | |
2c536799 JM |
2906 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
2907 | struct btrfs_block_rsv *block_rsv, | |
2908 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
2909 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2910 | struct btrfs_root *root, | |
2911 | struct extent_buffer *node, | |
2912 | struct extent_buffer *parent); | |
7841cb28 DS |
2913 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2914 | { | |
2915 | /* | |
afcdd129 | 2916 | * Do it this way so we only ever do one test_bit in the normal case. |
7841cb28 | 2917 | */ |
afcdd129 JB |
2918 | if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) { |
2919 | if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags)) | |
2920 | return 2; | |
2921 | return 1; | |
2922 | } | |
2923 | return 0; | |
7841cb28 | 2924 | } |
babbf170 MX |
2925 | |
2926 | /* | |
2927 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
2928 | * anything except sleeping. This function is used to check the status of | |
2929 | * the fs. | |
2930 | */ | |
2ff7e61e | 2931 | static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info) |
babbf170 | 2932 | { |
2ff7e61e | 2933 | return fs_info->sb->s_flags & MS_RDONLY || btrfs_fs_closing(fs_info); |
babbf170 MX |
2934 | } |
2935 | ||
6c41761f DS |
2936 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
2937 | { | |
837d5b6e | 2938 | kfree(fs_info->balance_ctl); |
6c41761f DS |
2939 | kfree(fs_info->delayed_root); |
2940 | kfree(fs_info->extent_root); | |
2941 | kfree(fs_info->tree_root); | |
2942 | kfree(fs_info->chunk_root); | |
2943 | kfree(fs_info->dev_root); | |
2944 | kfree(fs_info->csum_root); | |
bcef60f2 | 2945 | kfree(fs_info->quota_root); |
d8f98039 | 2946 | kfree(fs_info->uuid_root); |
70f6d82e | 2947 | kfree(fs_info->free_space_root); |
6c41761f DS |
2948 | kfree(fs_info->super_copy); |
2949 | kfree(fs_info->super_for_commit); | |
f667aef6 | 2950 | security_free_mnt_opts(&fs_info->security_opts); |
6c41761f DS |
2951 | kfree(fs_info); |
2952 | } | |
7841cb28 | 2953 | |
097b8a7c JS |
2954 | /* tree mod log functions from ctree.c */ |
2955 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2956 | struct seq_list *elem); | |
2957 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2958 | struct seq_list *elem); | |
5b6602e7 | 2959 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 2960 | |
dee26a9f | 2961 | /* root-item.c */ |
0660b5af | 2962 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
6bccf3ab | 2963 | struct btrfs_fs_info *fs_info, |
4df27c4d YZ |
2964 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2965 | const char *name, int name_len); | |
2966 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
6bccf3ab | 2967 | struct btrfs_fs_info *fs_info, |
4df27c4d | 2968 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, |
0660b5af | 2969 | const char *name, int name_len); |
e089f05c | 2970 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
310712b2 OS |
2971 | const struct btrfs_key *key); |
2972 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
2973 | const struct btrfs_key *key, | |
2974 | struct btrfs_root_item *item); | |
b45a9d8b JM |
2975 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
2976 | struct btrfs_root *root, | |
2977 | struct btrfs_key *key, | |
2978 | struct btrfs_root_item *item); | |
310712b2 | 2979 | int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key, |
cb517eab MX |
2980 | struct btrfs_path *path, struct btrfs_root_item *root_item, |
2981 | struct btrfs_key *root_key); | |
6bccf3ab | 2982 | int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info); |
bf5f32ec MF |
2983 | void btrfs_set_root_node(struct btrfs_root_item *item, |
2984 | struct extent_buffer *node); | |
08fe4db1 | 2985 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
2986 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
2987 | struct btrfs_root *root); | |
08fe4db1 | 2988 | |
07b30a49 SB |
2989 | /* uuid-tree.c */ |
2990 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, | |
6bccf3ab | 2991 | struct btrfs_fs_info *fs_info, u8 *uuid, u8 type, |
07b30a49 SB |
2992 | u64 subid); |
2993 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, | |
6bccf3ab | 2994 | struct btrfs_fs_info *fs_info, u8 *uuid, u8 type, |
07b30a49 | 2995 | u64 subid); |
70f80175 SB |
2996 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
2997 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
2998 | u64)); | |
07b30a49 | 2999 | |
dee26a9f | 3000 | /* dir-item.c */ |
9c52057c CM |
3001 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
3002 | const char *name, int name_len); | |
d397712b CM |
3003 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
3004 | struct btrfs_root *root, const char *name, | |
8e7611cf | 3005 | int name_len, struct btrfs_inode *dir, |
aec7477b | 3006 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3007 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3008 | struct btrfs_root *root, | |
3009 | struct btrfs_path *path, u64 dir, | |
3010 | const char *name, int name_len, | |
3011 | int mod); | |
3012 | struct btrfs_dir_item * | |
3013 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3014 | struct btrfs_root *root, | |
3015 | struct btrfs_path *path, u64 dir, | |
3016 | u64 objectid, const char *name, int name_len, | |
3017 | int mod); | |
4df27c4d YZ |
3018 | struct btrfs_dir_item * |
3019 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3020 | struct btrfs_path *path, u64 dirid, | |
3021 | const char *name, int name_len); | |
7e38180e CM |
3022 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3023 | struct btrfs_root *root, | |
3024 | struct btrfs_path *path, | |
3025 | struct btrfs_dir_item *di); | |
5103e947 | 3026 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3027 | struct btrfs_root *root, |
3028 | struct btrfs_path *path, u64 objectid, | |
3029 | const char *name, u16 name_len, | |
3030 | const void *data, u16 data_len); | |
5103e947 JB |
3031 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3032 | struct btrfs_root *root, | |
3033 | struct btrfs_path *path, u64 dir, | |
3034 | const char *name, u16 name_len, | |
3035 | int mod); | |
2ff7e61e | 3036 | int verify_dir_item(struct btrfs_fs_info *fs_info, |
22a94d44 JB |
3037 | struct extent_buffer *leaf, |
3038 | struct btrfs_dir_item *dir_item); | |
2ff7e61e | 3039 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info, |
5f5bc6b1 FM |
3040 | struct btrfs_path *path, |
3041 | const char *name, | |
3042 | int name_len); | |
7b128766 JB |
3043 | |
3044 | /* orphan.c */ | |
3045 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3046 | struct btrfs_root *root, u64 offset); | |
3047 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3048 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3049 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3050 | |
dee26a9f | 3051 | /* inode-item.c */ |
3954401f CM |
3052 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3053 | struct btrfs_root *root, | |
3054 | const char *name, int name_len, | |
aec7477b | 3055 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3056 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3057 | struct btrfs_root *root, | |
3058 | const char *name, int name_len, | |
aec7477b | 3059 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
3060 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3061 | struct btrfs_root *root, | |
3062 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3063 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3064 | *root, struct btrfs_path *path, |
3065 | struct btrfs_key *location, int mod); | |
dee26a9f | 3066 | |
f186373f MF |
3067 | struct btrfs_inode_extref * |
3068 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3069 | struct btrfs_root *root, | |
3070 | struct btrfs_path *path, | |
3071 | const char *name, int name_len, | |
3072 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3073 | int cow); | |
3074 | ||
3075 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, | |
3076 | u64 ref_objectid, const char *name, | |
3077 | int name_len, | |
3078 | struct btrfs_inode_extref **extref_ret); | |
3079 | ||
dee26a9f | 3080 | /* file-item.c */ |
facc8a22 | 3081 | struct btrfs_dio_private; |
459931ec | 3082 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
5b4aacef | 3083 | struct btrfs_fs_info *fs_info, u64 bytenr, u64 len); |
2ff7e61e JM |
3084 | int btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u32 *dst); |
3085 | int btrfs_lookup_bio_sums_dio(struct inode *inode, struct bio *bio, | |
3086 | u64 logical_offset); | |
b18c6685 | 3087 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3088 | struct btrfs_root *root, |
3089 | u64 objectid, u64 pos, | |
3090 | u64 disk_offset, u64 disk_num_bytes, | |
3091 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3092 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3093 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3094 | struct btrfs_root *root, | |
3095 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3096 | u64 bytenr, int mod); |
065631f6 | 3097 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3098 | struct btrfs_root *root, |
e6dcd2dc | 3099 | struct btrfs_ordered_sum *sums); |
2ff7e61e JM |
3100 | int btrfs_csum_one_bio(struct inode *inode, struct bio *bio, |
3101 | u64 file_start, int contig); | |
a2de733c AJ |
3102 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3103 | struct list_head *list, int search_commit); | |
9cdc5124 | 3104 | void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode, |
7ffbb598 FM |
3105 | const struct btrfs_path *path, |
3106 | struct btrfs_file_extent_item *fi, | |
3107 | const bool new_inline, | |
3108 | struct extent_map *em); | |
3109 | ||
39279cc3 | 3110 | /* inode.c */ |
8ccf6f19 MX |
3111 | struct btrfs_delalloc_work { |
3112 | struct inode *inode; | |
8ccf6f19 MX |
3113 | int delay_iput; |
3114 | struct completion completion; | |
3115 | struct list_head list; | |
3116 | struct btrfs_work work; | |
3117 | }; | |
3118 | ||
3119 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, | |
651d494a | 3120 | int delay_iput); |
8ccf6f19 MX |
3121 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); |
3122 | ||
fc4f21b1 NB |
3123 | struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, |
3124 | struct page *page, size_t pg_offset, u64 start, | |
3125 | u64 len, int create); | |
00361589 | 3126 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3127 | u64 *orig_start, u64 *orig_block_len, |
3128 | u64 *ram_bytes); | |
4881ee5a CM |
3129 | |
3130 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3131 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3132 | #define ClearPageChecked ClearPageFsMisc |
3133 | #define SetPageChecked SetPageFsMisc | |
3134 | #define PageChecked PageFsMisc | |
3135 | #endif | |
3136 | ||
b6973aa6 LZ |
3137 | /* This forces readahead on a given range of bytes in an inode */ |
3138 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3139 | struct file_ra_state *ra, struct file *file, | |
3140 | pgoff_t offset, unsigned long req_size) | |
3141 | { | |
3142 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3143 | } | |
3144 | ||
3de4586c | 3145 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
70ddc553 | 3146 | int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index); |
e02119d5 CM |
3147 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3148 | struct btrfs_root *root, | |
4ec5934e | 3149 | struct btrfs_inode *dir, struct btrfs_inode *inode, |
e02119d5 CM |
3150 | const char *name, int name_len); |
3151 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
db0a669f | 3152 | struct btrfs_inode *parent_inode, struct btrfs_inode *inode, |
e02119d5 | 3153 | const char *name, int name_len, int add_backref, u64 index); |
4df27c4d YZ |
3154 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3155 | struct btrfs_root *root, | |
3156 | struct inode *dir, u64 objectid, | |
3157 | const char *name, int name_len); | |
9703fefe | 3158 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
2aaa6655 | 3159 | int front); |
e02119d5 CM |
3160 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3161 | struct btrfs_root *root, | |
3162 | struct inode *inode, u64 new_size, | |
3163 | u32 min_type); | |
3164 | ||
24bbcf04 | 3165 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
6c255e67 MX |
3166 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
3167 | int nr); | |
2ac55d41 | 3168 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
ba8b04c1 | 3169 | struct extent_state **cached_state, int dedupe); |
d2fb3437 | 3170 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3171 | struct btrfs_root *new_root, |
3172 | struct btrfs_root *parent_root, | |
3173 | u64 new_dirid); | |
81a75f67 | 3174 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
64a16701 DW |
3175 | size_t size, struct bio *bio, |
3176 | unsigned long bio_flags); | |
c6100a4b | 3177 | void btrfs_set_range_writeback(void *private_data, u64 start, u64 end); |
11bac800 | 3178 | int btrfs_page_mkwrite(struct vm_fault *vmf); |
9ebefb18 | 3179 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3180 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3181 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3182 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3183 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3184 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3185 | int btrfs_init_cachep(void); |
3186 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3187 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3188 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3189 | struct btrfs_root *root, int *was_new); |
fc4f21b1 NB |
3190 | struct extent_map *btrfs_get_extent(struct btrfs_inode *inode, |
3191 | struct page *page, size_t pg_offset, | |
3192 | u64 start, u64 end, int create); | |
a52d9a80 CM |
3193 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
3194 | struct btrfs_root *root, | |
3195 | struct inode *inode); | |
be6aef60 JB |
3196 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3197 | struct btrfs_root *root, struct inode *inode); | |
73f2e545 NB |
3198 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, |
3199 | struct btrfs_inode *inode); | |
66b4ffd1 | 3200 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3201 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3202 | struct btrfs_root *root); | |
a41ad394 | 3203 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3204 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 | 3205 | void btrfs_add_delayed_iput(struct inode *inode); |
2ff7e61e | 3206 | void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info); |
efa56464 YZ |
3207 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3208 | u64 start, u64 num_bytes, u64 min_size, | |
3209 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3210 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3211 | struct btrfs_trans_handle *trans, int mode, | |
3212 | u64 start, u64 num_bytes, u64 min_size, | |
3213 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 3214 | extern const struct dentry_operations btrfs_dentry_operations; |
6a3891c5 JB |
3215 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
3216 | void btrfs_test_inode_set_ops(struct inode *inode); | |
3217 | #endif | |
f46b5a66 CH |
3218 | |
3219 | /* ioctl.c */ | |
3220 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3221 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
d5131b65 | 3222 | int btrfs_ioctl_get_supported_features(void __user *arg); |
6cbff00f CH |
3223 | void btrfs_update_iflags(struct inode *inode); |
3224 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
dd5f9615 | 3225 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3226 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3227 | struct btrfs_ioctl_defrag_range_args *range, | |
3228 | u64 newer_than, unsigned long max_pages); | |
5af3e8cc SB |
3229 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3230 | struct btrfs_ioctl_space_info *space); | |
35a3621b SB |
3231 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
3232 | struct btrfs_ioctl_balance_args *bargs); | |
2b3909f8 DW |
3233 | ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen, |
3234 | struct file *dst_file, u64 dst_loff); | |
35a3621b | 3235 | |
39279cc3 | 3236 | /* file.c */ |
9247f317 MX |
3237 | int btrfs_auto_defrag_init(void); |
3238 | void btrfs_auto_defrag_exit(void); | |
4cb5300b | 3239 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
6158e1ce | 3240 | struct btrfs_inode *inode); |
4cb5300b | 3241 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
26176e7c | 3242 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3243 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
dcdbc059 | 3244 | void btrfs_drop_extent_cache(struct btrfs_inode *inode, u64 start, u64 end, |
7014cdb4 | 3245 | int skip_pinned); |
828c0950 | 3246 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3247 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3248 | struct btrfs_root *root, struct inode *inode, | |
3249 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3250 | u64 *drop_end, int drop_cache, |
3251 | int replace_extent, | |
3252 | u32 extent_item_size, | |
3253 | int *key_inserted); | |
5dc562c5 JB |
3254 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3255 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3256 | u64 end, int drop_cache); |
d899e052 | 3257 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
7a6d7067 | 3258 | struct btrfs_inode *inode, u64 start, u64 end); |
6bf13c0c | 3259 | int btrfs_release_file(struct inode *inode, struct file *file); |
2ff7e61e JM |
3260 | int btrfs_dirty_pages(struct inode *inode, struct page **pages, |
3261 | size_t num_pages, loff_t pos, size_t write_bytes, | |
be1a12a0 | 3262 | struct extent_state **cached); |
728404da | 3263 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
04b38d60 CH |
3264 | int btrfs_clone_file_range(struct file *file_in, loff_t pos_in, |
3265 | struct file *file_out, loff_t pos_out, u64 len); | |
6bf13c0c | 3266 | |
6702ed49 CM |
3267 | /* tree-defrag.c */ |
3268 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3269 | struct btrfs_root *root); |
58176a96 JB |
3270 | |
3271 | /* sysfs.c */ | |
3272 | int btrfs_init_sysfs(void); | |
3273 | void btrfs_exit_sysfs(void); | |
96f3136e | 3274 | int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info); |
6618a59b | 3275 | void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info); |
58176a96 | 3276 | |
5103e947 JB |
3277 | /* xattr.c */ |
3278 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3279 | |
edbd8d4e | 3280 | /* super.c */ |
2ff7e61e | 3281 | int btrfs_parse_options(struct btrfs_fs_info *info, char *options, |
96da0919 | 3282 | unsigned long new_flags); |
6bf13c0c | 3283 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 | 3284 | |
2fd57fcb AB |
3285 | static inline __printf(2, 3) |
3286 | void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) | |
3287 | { | |
3288 | } | |
3289 | ||
533574c6 JP |
3290 | #ifdef CONFIG_PRINTK |
3291 | __printf(2, 3) | |
c2cf52eb | 3292 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 | 3293 | #else |
2fd57fcb AB |
3294 | #define btrfs_printk(fs_info, fmt, args...) \ |
3295 | btrfs_no_printk(fs_info, fmt, ##args) | |
533574c6 JP |
3296 | #endif |
3297 | ||
c2cf52eb SK |
3298 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3299 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3300 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3301 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3302 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3303 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3304 | #define btrfs_err(fs_info, fmt, args...) \ | |
3305 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3306 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3307 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3308 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3309 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3310 | #define btrfs_info(fs_info, fmt, args...) \ | |
3311 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3312 | |
08a84e25 DS |
3313 | /* |
3314 | * Wrappers that use printk_in_rcu | |
3315 | */ | |
3316 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3317 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3318 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3319 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3320 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3321 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3322 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3323 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3324 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3325 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3326 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3327 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3328 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3329 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3330 | ||
24aa6b41 DS |
3331 | /* |
3332 | * Wrappers that use a ratelimited printk_in_rcu | |
3333 | */ | |
3334 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3335 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3336 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3337 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3338 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3339 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3340 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3341 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3342 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3343 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3344 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3345 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3346 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3347 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3348 | ||
1dd6d7ca DS |
3349 | /* |
3350 | * Wrappers that use a ratelimited printk | |
3351 | */ | |
3352 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3353 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3354 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3355 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3356 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3357 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3358 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3359 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3360 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3361 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3362 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3363 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3364 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3365 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
897a41b1 JM |
3366 | |
3367 | #if defined(CONFIG_DYNAMIC_DEBUG) | |
3368 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3369 | do { \ | |
3370 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3371 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3372 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args); \ | |
3373 | } while (0) | |
3374 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ | |
3375 | do { \ | |
3376 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3377 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3378 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args); \ | |
3379 | } while (0) | |
3380 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ | |
3381 | do { \ | |
3382 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3383 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3384 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, \ | |
3385 | ##args);\ | |
3386 | } while (0) | |
3387 | #define btrfs_debug_rl(fs_info, fmt, args...) \ | |
3388 | do { \ | |
3389 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3390 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3391 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, \ | |
3392 | ##args); \ | |
3393 | } while (0) | |
3394 | #elif defined(DEBUG) | |
c2cf52eb SK |
3395 | #define btrfs_debug(fs_info, fmt, args...) \ |
3396 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3397 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3398 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3399 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3400 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3401 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3402 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3403 | #else |
3404 | #define btrfs_debug(fs_info, fmt, args...) \ | |
c01f5f96 | 3405 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
08a84e25 | 3406 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
c01f5f96 | 3407 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
24aa6b41 | 3408 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
c01f5f96 | 3409 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
1dd6d7ca | 3410 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
c01f5f96 | 3411 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
27a0dd61 | 3412 | #endif |
c2cf52eb | 3413 | |
08a84e25 DS |
3414 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3415 | do { \ | |
3416 | rcu_read_lock(); \ | |
3417 | btrfs_printk(fs_info, fmt, ##args); \ | |
3418 | rcu_read_unlock(); \ | |
3419 | } while (0) | |
3420 | ||
24aa6b41 DS |
3421 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3422 | do { \ | |
3423 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3424 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3425 | DEFAULT_RATELIMIT_BURST); \ | |
3426 | if (__ratelimit(&_rs)) \ | |
3427 | btrfs_printk(fs_info, fmt, ##args); \ | |
3428 | } while (0) | |
3429 | ||
3430 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3431 | do { \ | |
3432 | rcu_read_lock(); \ | |
3433 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3434 | rcu_read_unlock(); \ | |
3435 | } while (0) | |
3436 | ||
2e17c7c6 JB |
3437 | #ifdef CONFIG_BTRFS_ASSERT |
3438 | ||
c0d19e2b | 3439 | __cold |
2e17c7c6 JB |
3440 | static inline void assfail(char *expr, char *file, int line) |
3441 | { | |
ab8d0fc4 | 3442 | pr_err("assertion failed: %s, file: %s, line: %d\n", |
2e17c7c6 JB |
3443 | expr, file, line); |
3444 | BUG(); | |
3445 | } | |
3446 | ||
3447 | #define ASSERT(expr) \ | |
3448 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3449 | #else | |
3450 | #define ASSERT(expr) ((void)0) | |
3451 | #endif | |
3452 | ||
533574c6 | 3453 | __printf(5, 6) |
c0d19e2b | 3454 | __cold |
34d97007 | 3455 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3456 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3457 | |
e33e17ee | 3458 | const char *btrfs_decode_error(int errno); |
533574c6 | 3459 | |
c0d19e2b | 3460 | __cold |
49b25e05 | 3461 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
66642832 | 3462 | const char *function, |
49b25e05 JM |
3463 | unsigned int line, int errno); |
3464 | ||
c5f4ccb2 AJ |
3465 | /* |
3466 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3467 | * detected, that way the exact line number is reported. | |
3468 | */ | |
66642832 | 3469 | #define btrfs_abort_transaction(trans, errno) \ |
c5f4ccb2 AJ |
3470 | do { \ |
3471 | /* Report first abort since mount */ \ | |
3472 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
66642832 | 3473 | &((trans)->fs_info->fs_state))) { \ |
e5d6b12f CM |
3474 | if ((errno) != -EIO) { \ |
3475 | WARN(1, KERN_DEBUG \ | |
3476 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3477 | (errno)); \ | |
3478 | } else { \ | |
71367b3f JM |
3479 | btrfs_debug((trans)->fs_info, \ |
3480 | "Transaction aborted (error %d)", \ | |
e5d6b12f CM |
3481 | (errno)); \ |
3482 | } \ | |
c5f4ccb2 | 3483 | } \ |
66642832 | 3484 | __btrfs_abort_transaction((trans), __func__, \ |
c5f4ccb2 AJ |
3485 | __LINE__, (errno)); \ |
3486 | } while (0) | |
3487 | ||
3488 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3489 | do { \ | |
3490 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3491 | (errno), fmt, ##args); \ | |
3492 | } while (0) | |
3493 | ||
3494 | __printf(5, 6) | |
3495 | __cold | |
3496 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3497 | unsigned int line, int errno, const char *fmt, ...); | |
3498 | /* | |
3499 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3500 | * will panic(). Otherwise we BUG() here. | |
3501 | */ | |
3502 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3503 | do { \ | |
3504 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3505 | BUG(); \ | |
3506 | } while (0) | |
3507 | ||
3508 | ||
3509 | /* compatibility and incompatibility defines */ | |
3510 | ||
2b0ce2c2 MH |
3511 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3512 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3513 | ||
3514 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3515 | u64 flag) | |
3516 | { | |
3517 | struct btrfs_super_block *disk_super; | |
3518 | u64 features; | |
3519 | ||
3520 | disk_super = fs_info->super_copy; | |
3521 | features = btrfs_super_incompat_flags(disk_super); | |
3522 | if (!(features & flag)) { | |
ceda0864 MX |
3523 | spin_lock(&fs_info->super_lock); |
3524 | features = btrfs_super_incompat_flags(disk_super); | |
3525 | if (!(features & flag)) { | |
3526 | features |= flag; | |
3527 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3528 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3529 | flag); |
3530 | } | |
3531 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3532 | } |
3533 | } | |
3534 | ||
1abfbcdf OS |
3535 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
3536 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3537 | ||
3538 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
3539 | u64 flag) | |
3540 | { | |
3541 | struct btrfs_super_block *disk_super; | |
3542 | u64 features; | |
3543 | ||
3544 | disk_super = fs_info->super_copy; | |
3545 | features = btrfs_super_incompat_flags(disk_super); | |
3546 | if (features & flag) { | |
3547 | spin_lock(&fs_info->super_lock); | |
3548 | features = btrfs_super_incompat_flags(disk_super); | |
3549 | if (features & flag) { | |
3550 | features &= ~flag; | |
3551 | btrfs_set_super_incompat_flags(disk_super, features); | |
3552 | btrfs_info(fs_info, "clearing %llu feature flag", | |
3553 | flag); | |
3554 | } | |
3555 | spin_unlock(&fs_info->super_lock); | |
3556 | } | |
3557 | } | |
3558 | ||
3173a18f JB |
3559 | #define btrfs_fs_incompat(fs_info, opt) \ |
3560 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3561 | ||
9780c497 | 3562 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3563 | { |
3564 | struct btrfs_super_block *disk_super; | |
3565 | disk_super = fs_info->super_copy; | |
3566 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3567 | } | |
3568 | ||
1abfbcdf OS |
3569 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
3570 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3571 | ||
3572 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3573 | u64 flag) | |
3574 | { | |
3575 | struct btrfs_super_block *disk_super; | |
3576 | u64 features; | |
3577 | ||
3578 | disk_super = fs_info->super_copy; | |
3579 | features = btrfs_super_compat_ro_flags(disk_super); | |
3580 | if (!(features & flag)) { | |
3581 | spin_lock(&fs_info->super_lock); | |
3582 | features = btrfs_super_compat_ro_flags(disk_super); | |
3583 | if (!(features & flag)) { | |
3584 | features |= flag; | |
3585 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3586 | btrfs_info(fs_info, "setting %llu ro feature flag", | |
3587 | flag); | |
3588 | } | |
3589 | spin_unlock(&fs_info->super_lock); | |
3590 | } | |
3591 | } | |
3592 | ||
3593 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
3594 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3595 | ||
3596 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3597 | u64 flag) | |
3598 | { | |
3599 | struct btrfs_super_block *disk_super; | |
3600 | u64 features; | |
3601 | ||
3602 | disk_super = fs_info->super_copy; | |
3603 | features = btrfs_super_compat_ro_flags(disk_super); | |
3604 | if (features & flag) { | |
3605 | spin_lock(&fs_info->super_lock); | |
3606 | features = btrfs_super_compat_ro_flags(disk_super); | |
3607 | if (features & flag) { | |
3608 | features &= ~flag; | |
3609 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3610 | btrfs_info(fs_info, "clearing %llu ro feature flag", | |
3611 | flag); | |
3612 | } | |
3613 | spin_unlock(&fs_info->super_lock); | |
3614 | } | |
3615 | } | |
3616 | ||
3617 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3618 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3619 | ||
3620 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3621 | { | |
3622 | struct btrfs_super_block *disk_super; | |
3623 | disk_super = fs_info->super_copy; | |
3624 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3625 | } | |
3626 | ||
33268eaf | 3627 | /* acl.c */ |
0eda294d | 3628 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3629 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3630 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3631 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3632 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3633 | #else |
ed8f3737 | 3634 | #define btrfs_get_acl NULL |
996a710d | 3635 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3636 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3637 | struct inode *inode, struct inode *dir) | |
3638 | { | |
3639 | return 0; | |
3640 | } | |
9b89d95a | 3641 | #endif |
0f9dd46c | 3642 | |
5d4f98a2 | 3643 | /* relocation.c */ |
6bccf3ab | 3644 | int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start); |
5d4f98a2 YZ |
3645 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
3646 | struct btrfs_root *root); | |
3647 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3648 | struct btrfs_root *root); | |
3649 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3650 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
3651 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3652 | struct btrfs_root *root, struct extent_buffer *buf, | |
3653 | struct extent_buffer *cow); | |
147d256e | 3654 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 3655 | u64 *bytes_to_reserve); |
49b25e05 | 3656 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3657 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3658 | |
3659 | /* scrub.c */ | |
aa1b8cd4 SB |
3660 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3661 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3662 | int readonly, int is_dev_replace); |
2ff7e61e JM |
3663 | void btrfs_scrub_pause(struct btrfs_fs_info *fs_info); |
3664 | void btrfs_scrub_continue(struct btrfs_fs_info *fs_info); | |
aa1b8cd4 SB |
3665 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
3666 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
3667 | struct btrfs_device *dev); | |
2ff7e61e | 3668 | int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid, |
a2de733c | 3669 | struct btrfs_scrub_progress *progress); |
0966a7b1 QW |
3670 | static inline void btrfs_init_full_stripe_locks_tree( |
3671 | struct btrfs_full_stripe_locks_tree *locks_root) | |
3672 | { | |
3673 | locks_root->root = RB_ROOT; | |
3674 | mutex_init(&locks_root->lock); | |
3675 | } | |
c404e0dc MX |
3676 | |
3677 | /* dev-replace.c */ | |
3678 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
3679 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
3680 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
3681 | ||
3682 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
3683 | { | |
3684 | btrfs_bio_counter_sub(fs_info, 1); | |
3685 | } | |
a2de733c | 3686 | |
7414a03f AJ |
3687 | /* reada.c */ |
3688 | struct reada_control { | |
c28f158e | 3689 | struct btrfs_fs_info *fs_info; /* tree to prefetch */ |
7414a03f AJ |
3690 | struct btrfs_key key_start; |
3691 | struct btrfs_key key_end; /* exclusive */ | |
3692 | atomic_t elems; | |
3693 | struct kref refcnt; | |
3694 | wait_queue_head_t wait; | |
3695 | }; | |
3696 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3697 | struct btrfs_key *start, struct btrfs_key *end); | |
3698 | int btrfs_reada_wait(void *handle); | |
3699 | void btrfs_reada_detach(void *handle); | |
d48d71aa | 3700 | int btree_readahead_hook(struct extent_buffer *eb, int err); |
7414a03f | 3701 | |
95a06077 JS |
3702 | static inline int is_fstree(u64 rootid) |
3703 | { | |
3704 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
3705 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
3706 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
3707 | return 1; |
3708 | return 0; | |
3709 | } | |
210549eb DS |
3710 | |
3711 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3712 | { | |
3713 | return signal_pending(current); | |
3714 | } | |
3715 | ||
aaedb55b JB |
3716 | /* Sanity test specific functions */ |
3717 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3718 | void btrfs_test_destroy_inode(struct inode *inode); | |
3719 | #endif | |
210549eb | 3720 | |
f5ee5c9a | 3721 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
fccb84c9 DS |
3722 | { |
3723 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
f5ee5c9a JM |
3724 | if (unlikely(test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, |
3725 | &fs_info->fs_state))) | |
fccb84c9 DS |
3726 | return 1; |
3727 | #endif | |
3728 | return 0; | |
3729 | } | |
eb60ceac | 3730 | #endif |