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9888c340 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
6cbd5570 CM |
2 | /* |
3 | * Copyright (C) 2007 Oracle. All rights reserved. | |
6cbd5570 CM |
4 | */ |
5 | ||
9888c340 DS |
6 | #ifndef BTRFS_CTREE_H |
7 | #define BTRFS_CTREE_H | |
eb60ceac | 8 | |
810191ff | 9 | #include <linux/mm.h> |
174cd4b1 | 10 | #include <linux/sched/signal.h> |
810191ff | 11 | #include <linux/highmem.h> |
e20d96d6 | 12 | #include <linux/fs.h> |
a2de733c | 13 | #include <linux/rwsem.h> |
803b2f54 | 14 | #include <linux/semaphore.h> |
58176a96 | 15 | #include <linux/completion.h> |
04160088 | 16 | #include <linux/backing-dev.h> |
e6dcd2dc | 17 | #include <linux/wait.h> |
5a0e3ad6 | 18 | #include <linux/slab.h> |
1abe9b8a | 19 | #include <trace/events/btrfs.h> |
479965d6 | 20 | #include <asm/kmap_types.h> |
65019df8 | 21 | #include <asm/unaligned.h> |
3b16a4e3 | 22 | #include <linux/pagemap.h> |
55e301fd | 23 | #include <linux/btrfs.h> |
db671160 | 24 | #include <linux/btrfs_tree.h> |
21c7e756 | 25 | #include <linux/workqueue.h> |
f667aef6 | 26 | #include <linux/security.h> |
ee22184b | 27 | #include <linux/sizes.h> |
897a41b1 | 28 | #include <linux/dynamic_debug.h> |
1e4f4714 | 29 | #include <linux/refcount.h> |
9678c543 | 30 | #include <linux/crc32c.h> |
9c7d3a54 | 31 | #include "extent-io-tree.h" |
d1310b2e | 32 | #include "extent_io.h" |
5f39d397 | 33 | #include "extent_map.h" |
8b712842 | 34 | #include "async-thread.h" |
d12ffdd1 | 35 | #include "block-rsv.h" |
2992df73 | 36 | #include "locking.h" |
e20d96d6 | 37 | |
e089f05c | 38 | struct btrfs_trans_handle; |
79154b1b | 39 | struct btrfs_transaction; |
a22285a6 | 40 | struct btrfs_pending_snapshot; |
31890da0 | 41 | struct btrfs_delayed_ref_root; |
8719aaae | 42 | struct btrfs_space_info; |
32da5386 | 43 | struct btrfs_block_group; |
35b7e476 | 44 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
35b7e476 | 45 | extern struct kmem_cache *btrfs_bit_radix_cachep; |
2c90e5d6 | 46 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 47 | extern struct kmem_cache *btrfs_free_space_cachep; |
3acd4850 | 48 | extern struct kmem_cache *btrfs_free_space_bitmap_cachep; |
e6dcd2dc | 49 | struct btrfs_ordered_sum; |
82fa113f | 50 | struct btrfs_ref; |
e089f05c | 51 | |
cdb4c574 | 52 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 53 | |
71a9c488 DS |
54 | /* |
55 | * Maximum number of mirrors that can be available for all profiles counting | |
56 | * the target device of dev-replace as one. During an active device replace | |
57 | * procedure, the target device of the copy operation is a mirror for the | |
58 | * filesystem data as well that can be used to read data in order to repair | |
59 | * read errors on other disks. | |
60 | * | |
8d6fac00 | 61 | * Current value is derived from RAID1C4 with 4 copies. |
71a9c488 | 62 | */ |
8d6fac00 | 63 | #define BTRFS_MAX_MIRRORS (4 + 1) |
94598ba8 | 64 | |
4008c04a | 65 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 66 | |
7c829b72 AJ |
67 | #define BTRFS_OLDEST_GENERATION 0ULL |
68 | ||
727011e0 CM |
69 | /* |
70 | * the max metadata block size. This limit is somewhat artificial, | |
71 | * but the memmove costs go through the roof for larger blocks. | |
72 | */ | |
73 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
74 | ||
e20d96d6 CM |
75 | /* |
76 | * we can actually store much bigger names, but lets not confuse the rest | |
77 | * of linux | |
78 | */ | |
79 | #define BTRFS_NAME_LEN 255 | |
80 | ||
f186373f MF |
81 | /* |
82 | * Theoretical limit is larger, but we keep this down to a sane | |
83 | * value. That should limit greatly the possibility of collisions on | |
84 | * inode ref items. | |
85 | */ | |
86 | #define BTRFS_LINK_MAX 65535U | |
87 | ||
3954401f | 88 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 89 | |
3d136a11 SB |
90 | /* ioprio of readahead is set to idle */ |
91 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
92 | ||
ee22184b | 93 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M |
e2d84521 | 94 | |
dec59fa3 EL |
95 | /* |
96 | * Use large batch size to reduce overhead of metadata updates. On the reader | |
97 | * side, we only read it when we are close to ENOSPC and the read overhead is | |
98 | * mostly related to the number of CPUs, so it is OK to use arbitrary large | |
99 | * value here. | |
100 | */ | |
101 | #define BTRFS_TOTAL_BYTES_PINNED_BATCH SZ_128M | |
102 | ||
ee22184b | 103 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M |
dcab6a3b | 104 | |
dfb79ddb DZ |
105 | /* |
106 | * Deltas are an effective way to populate global statistics. Give macro names | |
107 | * to make it clear what we're doing. An example is discard_extents in | |
108 | * btrfs_free_space_ctl. | |
109 | */ | |
110 | #define BTRFS_STAT_NR_ENTRIES 2 | |
111 | #define BTRFS_STAT_CURR 0 | |
112 | #define BTRFS_STAT_PREV 1 | |
9678c543 | 113 | |
823bb20a DS |
114 | /* |
115 | * Count how many BTRFS_MAX_EXTENT_SIZE cover the @size | |
116 | */ | |
117 | static inline u32 count_max_extents(u64 size) | |
118 | { | |
119 | return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE); | |
120 | } | |
121 | ||
0b86a832 CM |
122 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
123 | { | |
124 | BUG_ON(num_stripes == 0); | |
125 | return sizeof(struct btrfs_chunk) + | |
126 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
127 | } | |
128 | ||
acce952b | 129 | /* |
b00146b5 | 130 | * Runtime (in-memory) states of filesystem |
acce952b | 131 | */ |
b00146b5 DS |
132 | enum { |
133 | /* Global indicator of serious filesystem errors */ | |
134 | BTRFS_FS_STATE_ERROR, | |
135 | /* | |
136 | * Filesystem is being remounted, allow to skip some operations, like | |
137 | * defrag | |
138 | */ | |
139 | BTRFS_FS_STATE_REMOUNTING, | |
140 | /* Track if a transaction abort has been reported on this filesystem */ | |
141 | BTRFS_FS_STATE_TRANS_ABORTED, | |
142 | /* | |
143 | * Bio operations should be blocked on this filesystem because a source | |
144 | * or target device is being destroyed as part of a device replace | |
145 | */ | |
146 | BTRFS_FS_STATE_DEV_REPLACING, | |
147 | /* The btrfs_fs_info created for self-tests */ | |
148 | BTRFS_FS_STATE_DUMMY_FS_INFO, | |
149 | }; | |
acce952b | 150 | |
5d4f98a2 YZ |
151 | #define BTRFS_BACKREF_REV_MAX 256 |
152 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
153 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
154 | BTRFS_BACKREF_REV_SHIFT) | |
155 | ||
156 | #define BTRFS_OLD_BACKREF_REV 0 | |
157 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 158 | |
fec577fb CM |
159 | /* |
160 | * every tree block (leaf or node) starts with this header. | |
161 | */ | |
bb492bb0 | 162 | struct btrfs_header { |
e17cade2 | 163 | /* these first four must match the super block */ |
f254e52c | 164 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 165 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 166 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 167 | __le64 flags; |
e17cade2 CM |
168 | |
169 | /* allowed to be different from the super from here on down */ | |
170 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 171 | __le64 generation; |
4d775673 | 172 | __le64 owner; |
5f39d397 | 173 | __le32 nritems; |
9a6f11ed | 174 | u8 level; |
eb60ceac CM |
175 | } __attribute__ ((__packed__)); |
176 | ||
0b86a832 CM |
177 | /* |
178 | * this is a very generous portion of the super block, giving us | |
179 | * room to translate 14 chunks with 3 stripes each. | |
180 | */ | |
181 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
182 | ||
af31f5e5 CM |
183 | /* |
184 | * just in case we somehow lose the roots and are not able to mount, | |
185 | * we store an array of the roots from previous transactions | |
186 | * in the super. | |
187 | */ | |
188 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
189 | struct btrfs_root_backup { | |
190 | __le64 tree_root; | |
191 | __le64 tree_root_gen; | |
192 | ||
193 | __le64 chunk_root; | |
194 | __le64 chunk_root_gen; | |
195 | ||
196 | __le64 extent_root; | |
197 | __le64 extent_root_gen; | |
198 | ||
199 | __le64 fs_root; | |
200 | __le64 fs_root_gen; | |
201 | ||
202 | __le64 dev_root; | |
203 | __le64 dev_root_gen; | |
204 | ||
205 | __le64 csum_root; | |
206 | __le64 csum_root_gen; | |
207 | ||
208 | __le64 total_bytes; | |
209 | __le64 bytes_used; | |
210 | __le64 num_devices; | |
211 | /* future */ | |
d1423248 | 212 | __le64 unused_64[4]; |
af31f5e5 CM |
213 | |
214 | u8 tree_root_level; | |
215 | u8 chunk_root_level; | |
216 | u8 extent_root_level; | |
217 | u8 fs_root_level; | |
218 | u8 dev_root_level; | |
219 | u8 csum_root_level; | |
220 | /* future and to align */ | |
221 | u8 unused_8[10]; | |
222 | } __attribute__ ((__packed__)); | |
223 | ||
fec577fb CM |
224 | /* |
225 | * the super block basically lists the main trees of the FS | |
226 | * it currently lacks any block count etc etc | |
227 | */ | |
234b63a0 | 228 | struct btrfs_super_block { |
63b10fc4 | 229 | /* the first 4 fields must match struct btrfs_header */ |
7239ff4b NB |
230 | u8 csum[BTRFS_CSUM_SIZE]; |
231 | /* FS specific UUID, visible to user */ | |
232 | u8 fsid[BTRFS_FSID_SIZE]; | |
db94535d | 233 | __le64 bytenr; /* this block number */ |
63b10fc4 | 234 | __le64 flags; |
e17cade2 CM |
235 | |
236 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 237 | __le64 magic; |
3768f368 CM |
238 | __le64 generation; |
239 | __le64 root; | |
0b86a832 | 240 | __le64 chunk_root; |
e02119d5 | 241 | __le64 log_root; |
c3027eb5 CM |
242 | |
243 | /* this will help find the new super based on the log root */ | |
244 | __le64 log_root_transid; | |
db94535d CM |
245 | __le64 total_bytes; |
246 | __le64 bytes_used; | |
2e635a27 | 247 | __le64 root_dir_objectid; |
8a4b83cc | 248 | __le64 num_devices; |
5f39d397 CM |
249 | __le32 sectorsize; |
250 | __le32 nodesize; | |
707e8a07 | 251 | __le32 __unused_leafsize; |
87ee04eb | 252 | __le32 stripesize; |
0b86a832 | 253 | __le32 sys_chunk_array_size; |
84234f3a | 254 | __le64 chunk_root_generation; |
f2b636e8 JB |
255 | __le64 compat_flags; |
256 | __le64 compat_ro_flags; | |
257 | __le64 incompat_flags; | |
607d432d | 258 | __le16 csum_type; |
db94535d | 259 | u8 root_level; |
0b86a832 | 260 | u8 chunk_root_level; |
e02119d5 | 261 | u8 log_root_level; |
0d81ba5d | 262 | struct btrfs_dev_item dev_item; |
c3027eb5 | 263 | |
7ae9c09d | 264 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 265 | |
0af3d00b | 266 | __le64 cache_generation; |
26432799 | 267 | __le64 uuid_tree_generation; |
0af3d00b | 268 | |
7239ff4b NB |
269 | /* the UUID written into btree blocks */ |
270 | u8 metadata_uuid[BTRFS_FSID_SIZE]; | |
271 | ||
c3027eb5 | 272 | /* future expansion */ |
7239ff4b | 273 | __le64 reserved[28]; |
0b86a832 | 274 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 275 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
276 | } __attribute__ ((__packed__)); |
277 | ||
f2b636e8 JB |
278 | /* |
279 | * Compat flags that we support. If any incompat flags are set other than the | |
280 | * ones specified below then we will fail to mount | |
281 | */ | |
5d4f98a2 | 282 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
283 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
284 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
70f6d82e OS |
285 | |
286 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ | |
6675df31 OS |
287 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \ |
288 | BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID) | |
70f6d82e | 289 | |
2eaa055f JM |
290 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
291 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
292 | ||
0af3d00b JB |
293 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
294 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 295 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 296 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 297 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 298 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
5c1aab1d | 299 | BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD | \ |
53b381b3 | 300 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 301 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f | 302 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
7239ff4b | 303 | BTRFS_FEATURE_INCOMPAT_NO_HOLES | \ |
cfbb825c DS |
304 | BTRFS_FEATURE_INCOMPAT_METADATA_UUID | \ |
305 | BTRFS_FEATURE_INCOMPAT_RAID1C34) | |
f2b636e8 | 306 | |
2eaa055f JM |
307 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
308 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
309 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 310 | |
fec577fb | 311 | /* |
62e2749e | 312 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
313 | * the item in the leaf (relative to the start of the data area) |
314 | */ | |
0783fcfc | 315 | struct btrfs_item { |
e2fa7227 | 316 | struct btrfs_disk_key key; |
123abc88 | 317 | __le32 offset; |
5f39d397 | 318 | __le32 size; |
eb60ceac CM |
319 | } __attribute__ ((__packed__)); |
320 | ||
fec577fb CM |
321 | /* |
322 | * leaves have an item area and a data area: | |
323 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
324 | * | |
325 | * The data is separate from the items to get the keys closer together | |
326 | * during searches. | |
327 | */ | |
234b63a0 | 328 | struct btrfs_leaf { |
bb492bb0 | 329 | struct btrfs_header header; |
123abc88 | 330 | struct btrfs_item items[]; |
eb60ceac CM |
331 | } __attribute__ ((__packed__)); |
332 | ||
fec577fb CM |
333 | /* |
334 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
335 | * other blocks | |
336 | */ | |
123abc88 CM |
337 | struct btrfs_key_ptr { |
338 | struct btrfs_disk_key key; | |
339 | __le64 blockptr; | |
74493f7a | 340 | __le64 generation; |
123abc88 CM |
341 | } __attribute__ ((__packed__)); |
342 | ||
234b63a0 | 343 | struct btrfs_node { |
bb492bb0 | 344 | struct btrfs_header header; |
123abc88 | 345 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
346 | } __attribute__ ((__packed__)); |
347 | ||
fec577fb | 348 | /* |
234b63a0 CM |
349 | * btrfs_paths remember the path taken from the root down to the leaf. |
350 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
351 | * to any other levels that are present. |
352 | * | |
353 | * The slots array records the index of the item or block pointer | |
354 | * used while walking the tree. | |
355 | */ | |
bbe339cc | 356 | enum { READA_NONE, READA_BACK, READA_FORWARD }; |
234b63a0 | 357 | struct btrfs_path { |
5f39d397 | 358 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 359 | int slots[BTRFS_MAX_LEVEL]; |
925baedd | 360 | /* if there is real range locking, this locks field will change */ |
4fb72bf2 | 361 | u8 locks[BTRFS_MAX_LEVEL]; |
dccabfad | 362 | u8 reada; |
925baedd | 363 | /* keep some upper locks as we walk down */ |
7853f15b | 364 | u8 lowest_level; |
459931ec CM |
365 | |
366 | /* | |
367 | * set by btrfs_split_item, tells search_slot to keep all locks | |
368 | * and to force calls to keep space in the nodes | |
369 | */ | |
b9473439 CM |
370 | unsigned int search_for_split:1; |
371 | unsigned int keep_locks:1; | |
372 | unsigned int skip_locking:1; | |
373 | unsigned int leave_spinning:1; | |
5d4f98a2 | 374 | unsigned int search_commit_root:1; |
3f8a18cc | 375 | unsigned int need_commit_sem:1; |
5f5bc6b1 | 376 | unsigned int skip_release_on_error:1; |
eb60ceac | 377 | }; |
da17066c | 378 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \ |
5d4f98a2 | 379 | sizeof(struct btrfs_item)) |
e922e087 SB |
380 | struct btrfs_dev_replace { |
381 | u64 replace_state; /* see #define above */ | |
a944442c AP |
382 | time64_t time_started; /* seconds since 1-Jan-1970 */ |
383 | time64_t time_stopped; /* seconds since 1-Jan-1970 */ | |
e922e087 SB |
384 | atomic64_t num_write_errors; |
385 | atomic64_t num_uncorrectable_read_errors; | |
386 | ||
387 | u64 cursor_left; | |
388 | u64 committed_cursor_left; | |
389 | u64 cursor_left_last_write_of_item; | |
390 | u64 cursor_right; | |
391 | ||
392 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
393 | ||
394 | int is_valid; | |
395 | int item_needs_writeback; | |
396 | struct btrfs_device *srcdev; | |
397 | struct btrfs_device *tgtdev; | |
398 | ||
e922e087 | 399 | struct mutex lock_finishing_cancel_unmount; |
129827e3 | 400 | struct rw_semaphore rwsem; |
e922e087 SB |
401 | |
402 | struct btrfs_scrub_progress scrub_progress; | |
7f8d236a DS |
403 | |
404 | struct percpu_counter bio_counter; | |
405 | wait_queue_head_t replace_wait; | |
e922e087 SB |
406 | }; |
407 | ||
fa9c0d79 CM |
408 | /* |
409 | * free clusters are used to claim free space in relatively large chunks, | |
583b7231 HK |
410 | * allowing us to do less seeky writes. They are used for all metadata |
411 | * allocations. In ssd_spread mode they are also used for data allocations. | |
fa9c0d79 CM |
412 | */ |
413 | struct btrfs_free_cluster { | |
414 | spinlock_t lock; | |
415 | spinlock_t refill_lock; | |
416 | struct rb_root root; | |
417 | ||
418 | /* largest extent in this cluster */ | |
419 | u64 max_size; | |
420 | ||
421 | /* first extent starting offset */ | |
422 | u64 window_start; | |
423 | ||
c759c4e1 JB |
424 | /* We did a full search and couldn't create a cluster */ |
425 | bool fragmented; | |
426 | ||
32da5386 | 427 | struct btrfs_block_group *block_group; |
fa9c0d79 CM |
428 | /* |
429 | * when a cluster is allocated from a block group, we put the | |
430 | * cluster onto a list in the block group so that it can | |
431 | * be freed before the block group is freed. | |
432 | */ | |
433 | struct list_head block_group_list; | |
6324fbf3 CM |
434 | }; |
435 | ||
817d52f8 | 436 | enum btrfs_caching_type { |
bbe339cc DS |
437 | BTRFS_CACHE_NO, |
438 | BTRFS_CACHE_STARTED, | |
439 | BTRFS_CACHE_FAST, | |
440 | BTRFS_CACHE_FINISHED, | |
441 | BTRFS_CACHE_ERROR, | |
817d52f8 JB |
442 | }; |
443 | ||
0966a7b1 QW |
444 | /* |
445 | * Tree to record all locked full stripes of a RAID5/6 block group | |
446 | */ | |
447 | struct btrfs_full_stripe_locks_tree { | |
448 | struct rb_root root; | |
449 | struct mutex lock; | |
450 | }; | |
451 | ||
b0643e59 DZ |
452 | /* Discard control. */ |
453 | /* | |
454 | * Async discard uses multiple lists to differentiate the discard filter | |
6e80d4f8 DZ |
455 | * parameters. Index 0 is for completely free block groups where we need to |
456 | * ensure the entire block group is trimmed without being lossy. Indices | |
457 | * afterwards represent monotonically decreasing discard filter sizes to | |
458 | * prioritize what should be discarded next. | |
b0643e59 | 459 | */ |
7fe6d45e | 460 | #define BTRFS_NR_DISCARD_LISTS 3 |
6e80d4f8 DZ |
461 | #define BTRFS_DISCARD_INDEX_UNUSED 0 |
462 | #define BTRFS_DISCARD_INDEX_START 1 | |
b0643e59 DZ |
463 | |
464 | struct btrfs_discard_ctl { | |
465 | struct workqueue_struct *discard_workers; | |
466 | struct delayed_work work; | |
467 | spinlock_t lock; | |
468 | struct btrfs_block_group *block_group; | |
469 | struct list_head discard_list[BTRFS_NR_DISCARD_LISTS]; | |
e93591bb | 470 | u64 prev_discard; |
dfb79ddb | 471 | atomic_t discardable_extents; |
5dc7c10b | 472 | atomic64_t discardable_bytes; |
19b2a2c7 | 473 | u64 max_discard_size; |
a2309300 DZ |
474 | unsigned long delay; |
475 | u32 iops_limit; | |
e93591bb | 476 | u32 kbps_limit; |
9ddf648f DZ |
477 | u64 discard_extent_bytes; |
478 | u64 discard_bitmap_bytes; | |
479 | atomic64_t discard_bytes_saved; | |
b0643e59 DZ |
480 | }; |
481 | ||
097b8a7c JS |
482 | /* delayed seq elem */ |
483 | struct seq_list { | |
484 | struct list_head list; | |
485 | u64 seq; | |
486 | }; | |
487 | ||
3284da7b DS |
488 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
489 | ||
de47c9d3 EN |
490 | #define SEQ_LAST ((u64)-1) |
491 | ||
5d80366e JB |
492 | enum btrfs_orphan_cleanup_state { |
493 | ORPHAN_CLEANUP_STARTED = 1, | |
494 | ORPHAN_CLEANUP_DONE = 2, | |
495 | }; | |
496 | ||
21c7e756 MX |
497 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
498 | ||
097b8a7c | 499 | /* fs_info */ |
5d4f98a2 | 500 | struct reloc_control; |
0b86a832 | 501 | struct btrfs_device; |
8a4b83cc | 502 | struct btrfs_fs_devices; |
c9e9f97b | 503 | struct btrfs_balance_control; |
16cdcec7 | 504 | struct btrfs_delayed_root; |
afcdd129 | 505 | |
eede2bf3 OS |
506 | /* |
507 | * Block group or device which contains an active swapfile. Used for preventing | |
508 | * unsafe operations while a swapfile is active. | |
509 | * | |
510 | * These are sorted on (ptr, inode) (note that a block group or device can | |
511 | * contain more than one swapfile). We compare the pointer values because we | |
512 | * don't actually care what the object is, we just need a quick check whether | |
513 | * the object exists in the rbtree. | |
514 | */ | |
515 | struct btrfs_swapfile_pin { | |
516 | struct rb_node node; | |
517 | void *ptr; | |
518 | struct inode *inode; | |
519 | /* | |
32da5386 DS |
520 | * If true, ptr points to a struct btrfs_block_group. Otherwise, ptr |
521 | * points to a struct btrfs_device. | |
eede2bf3 OS |
522 | */ |
523 | bool is_block_group; | |
524 | }; | |
525 | ||
526 | bool btrfs_pinned_by_swapfile(struct btrfs_fs_info *fs_info, void *ptr); | |
527 | ||
eb1a524c DS |
528 | enum { |
529 | BTRFS_FS_BARRIER, | |
530 | BTRFS_FS_CLOSING_START, | |
531 | BTRFS_FS_CLOSING_DONE, | |
532 | BTRFS_FS_LOG_RECOVERING, | |
533 | BTRFS_FS_OPEN, | |
534 | BTRFS_FS_QUOTA_ENABLED, | |
535 | BTRFS_FS_UPDATE_UUID_TREE_GEN, | |
536 | BTRFS_FS_CREATING_FREE_SPACE_TREE, | |
537 | BTRFS_FS_BTREE_ERR, | |
538 | BTRFS_FS_LOG1_ERR, | |
539 | BTRFS_FS_LOG2_ERR, | |
540 | BTRFS_FS_QUOTA_OVERRIDE, | |
541 | /* Used to record internally whether fs has been frozen */ | |
542 | BTRFS_FS_FROZEN, | |
543 | /* | |
544 | * Indicate that a whole-filesystem exclusive operation is running | |
545 | * (device replace, resize, device add/delete, balance) | |
546 | */ | |
547 | BTRFS_FS_EXCL_OP, | |
eb1a524c DS |
548 | /* |
549 | * Indicate that balance has been set up from the ioctl and is in the | |
550 | * main phase. The fs_info::balance_ctl is initialized. | |
9e967495 | 551 | * Set and cleared while holding fs_info::balance_mutex. |
eb1a524c DS |
552 | */ |
553 | BTRFS_FS_BALANCE_RUNNING, | |
fd340d0f JB |
554 | |
555 | /* Indicate that the cleaner thread is awake and doing something. */ | |
556 | BTRFS_FS_CLEANER_RUNNING, | |
9b4e675a DS |
557 | |
558 | /* | |
559 | * The checksumming has an optimized version and is considered fast, | |
560 | * so we don't need to offload checksums to workqueues. | |
561 | */ | |
562 | BTRFS_FS_CSUM_IMPL_FAST, | |
b0643e59 DZ |
563 | |
564 | /* Indicate that the discard workqueue can service discards. */ | |
565 | BTRFS_FS_DISCARD_RUNNING, | |
eb1a524c | 566 | }; |
3009a62f | 567 | |
9f5fae2f | 568 | struct btrfs_fs_info { |
e17cade2 | 569 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
afcdd129 | 570 | unsigned long flags; |
62e2749e CM |
571 | struct btrfs_root *extent_root; |
572 | struct btrfs_root *tree_root; | |
0b86a832 CM |
573 | struct btrfs_root *chunk_root; |
574 | struct btrfs_root *dev_root; | |
3de4586c | 575 | struct btrfs_root *fs_root; |
d20f7043 | 576 | struct btrfs_root *csum_root; |
416ac51d | 577 | struct btrfs_root *quota_root; |
f7a81ea4 | 578 | struct btrfs_root *uuid_root; |
a5ed9182 | 579 | struct btrfs_root *free_space_root; |
aeb935a4 | 580 | struct btrfs_root *data_reloc_root; |
e02119d5 CM |
581 | |
582 | /* the log root tree is a directory of all the other log roots */ | |
583 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
584 | |
585 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 586 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 587 | |
0f9dd46c JB |
588 | /* block group cache stuff */ |
589 | spinlock_t block_group_cache_lock; | |
a1897fdd | 590 | u64 first_logical_byte; |
0f9dd46c JB |
591 | struct rb_root block_group_cache_tree; |
592 | ||
2bf64758 | 593 | /* keep track of unallocated space */ |
a5ed45f8 | 594 | atomic64_t free_chunk_space; |
2bf64758 | 595 | |
fe119a6e NB |
596 | /* Track ranges which are used by log trees blocks/logged data extents */ |
597 | struct extent_io_tree excluded_extents; | |
1a5bc167 | 598 | |
0b86a832 | 599 | /* logical->physical extent mapping */ |
c8bf1b67 | 600 | struct extent_map_tree mapping_tree; |
0b86a832 | 601 | |
16cdcec7 MX |
602 | /* |
603 | * block reservation for extent, checksum, root tree and | |
604 | * delayed dir index item | |
605 | */ | |
f0486c68 | 606 | struct btrfs_block_rsv global_block_rsv; |
f0486c68 YZ |
607 | /* block reservation for metadata operations */ |
608 | struct btrfs_block_rsv trans_block_rsv; | |
609 | /* block reservation for chunk tree */ | |
610 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
611 | /* block reservation for delayed operations */ |
612 | struct btrfs_block_rsv delayed_block_rsv; | |
ba2c4d4e JB |
613 | /* block reservation for delayed refs */ |
614 | struct btrfs_block_rsv delayed_refs_rsv; | |
f0486c68 YZ |
615 | |
616 | struct btrfs_block_rsv empty_block_rsv; | |
617 | ||
293ffd5f | 618 | u64 generation; |
15ee9bc7 | 619 | u64 last_trans_committed; |
0a2b2a84 | 620 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
621 | |
622 | /* | |
623 | * this is updated to the current trans every time a full commit | |
624 | * is required instead of the faster short fsync log commits | |
625 | */ | |
626 | u64 last_trans_log_full_commit; | |
25cd999e | 627 | unsigned long mount_opt; |
572d9ab7 DS |
628 | /* |
629 | * Track requests for actions that need to be done during transaction | |
630 | * commit (like for some mount options). | |
631 | */ | |
632 | unsigned long pending_changes; | |
261507a0 | 633 | unsigned long compress_type:4; |
f51d2b59 | 634 | unsigned int compress_level; |
d3740608 | 635 | u32 commit_interval; |
8c6a3ee6 MX |
636 | /* |
637 | * It is a suggestive number, the read side is safe even it gets a | |
638 | * wrong number because we will write out the data into a regular | |
639 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
640 | * so it is also safe. | |
641 | */ | |
6f568d35 | 642 | u64 max_inline; |
0d0c71b3 | 643 | |
79154b1b | 644 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 645 | wait_queue_head_t transaction_throttle; |
f9295749 | 646 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 647 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 648 | wait_queue_head_t async_submit_wait; |
e02119d5 | 649 | |
ceda0864 MX |
650 | /* |
651 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
652 | * when they are updated. | |
653 | * | |
654 | * Because we do not clear the flags for ever, so we needn't use | |
655 | * the lock on the read side. | |
656 | * | |
657 | * We also needn't use the lock when we mount the fs, because | |
658 | * there is no other task which will update the flag. | |
659 | */ | |
660 | spinlock_t super_lock; | |
6c41761f DS |
661 | struct btrfs_super_block *super_copy; |
662 | struct btrfs_super_block *super_for_commit; | |
e20d96d6 | 663 | struct super_block *sb; |
d98237b3 | 664 | struct inode *btree_inode; |
e02119d5 | 665 | struct mutex tree_log_mutex; |
a74a4b97 CM |
666 | struct mutex transaction_kthread_mutex; |
667 | struct mutex cleaner_mutex; | |
925baedd | 668 | struct mutex chunk_mutex; |
53b381b3 | 669 | |
1bbc621e CM |
670 | /* |
671 | * this is taken to make sure we don't set block groups ro after | |
672 | * the free space cache has been allocated on them | |
673 | */ | |
674 | struct mutex ro_block_group_mutex; | |
675 | ||
53b381b3 DW |
676 | /* this is used during read/modify/write to make sure |
677 | * no two ios are trying to mod the same stripe at the same | |
678 | * time | |
679 | */ | |
680 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
681 | ||
5a3f23d5 CM |
682 | /* |
683 | * this protects the ordered operations list only while we are | |
684 | * processing all of the entries on it. This way we make | |
685 | * sure the commit code doesn't find the list temporarily empty | |
686 | * because another function happens to be doing non-waiting preflush | |
687 | * before jumping into the main commit. | |
688 | */ | |
689 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 690 | |
9e351cc8 | 691 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 692 | |
c71bf099 | 693 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 694 | |
c71bf099 | 695 | struct rw_semaphore subvol_sem; |
76dda93c | 696 | |
a4abeea4 | 697 | spinlock_t trans_lock; |
7585717f CM |
698 | /* |
699 | * the reloc mutex goes with the trans lock, it is taken | |
700 | * during commit to protect us from the relocation code | |
701 | */ | |
702 | struct mutex reloc_mutex; | |
703 | ||
8fd17795 | 704 | struct list_head trans_list; |
facda1e7 | 705 | struct list_head dead_roots; |
11833d66 | 706 | struct list_head caching_block_groups; |
e02119d5 | 707 | |
24bbcf04 YZ |
708 | spinlock_t delayed_iput_lock; |
709 | struct list_head delayed_iputs; | |
034f784d JB |
710 | atomic_t nr_delayed_iputs; |
711 | wait_queue_head_t delayed_iputs_wait; | |
24bbcf04 | 712 | |
fc36ed7e | 713 | atomic64_t tree_mod_seq; |
f29021b2 | 714 | |
7227ff4d | 715 | /* this protects tree_mod_log and tree_mod_seq_list */ |
f29021b2 JS |
716 | rwlock_t tree_mod_log_lock; |
717 | struct rb_root tree_mod_log; | |
7227ff4d | 718 | struct list_head tree_mod_seq_list; |
f29021b2 | 719 | |
771ed689 | 720 | atomic_t async_delalloc_pages; |
ce9adaa5 | 721 | |
3eaa2885 | 722 | /* |
199c2a9c | 723 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 724 | */ |
199c2a9c | 725 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
726 | |
727 | /* | |
199c2a9c MX |
728 | * all fs/file tree roots in which there are data=ordered extents |
729 | * pending writeback are added into this list. | |
730 | * | |
5a3f23d5 CM |
731 | * these can span multiple transactions and basically include |
732 | * every dirty data page that isn't from nodatacow | |
733 | */ | |
199c2a9c | 734 | struct list_head ordered_roots; |
5a3f23d5 | 735 | |
573bfb72 | 736 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
737 | spinlock_t delalloc_root_lock; |
738 | /* all fs/file tree roots that have delalloc inodes. */ | |
739 | struct list_head delalloc_roots; | |
3eaa2885 | 740 | |
8b712842 CM |
741 | /* |
742 | * there is a pool of worker threads for checksumming during writes | |
743 | * and a pool for checksumming after reads. This is because readers | |
744 | * can run with FS locks held, and the writers may be waiting for | |
745 | * those locks. We don't want ordering in the pending list to cause | |
746 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
747 | * |
748 | * A third pool does submit_bio to avoid deadlocking with the other | |
749 | * two | |
8b712842 | 750 | */ |
d458b054 QW |
751 | struct btrfs_workqueue *workers; |
752 | struct btrfs_workqueue *delalloc_workers; | |
753 | struct btrfs_workqueue *flush_workers; | |
754 | struct btrfs_workqueue *endio_workers; | |
755 | struct btrfs_workqueue *endio_meta_workers; | |
756 | struct btrfs_workqueue *endio_raid56_workers; | |
757 | struct btrfs_workqueue *rmw_workers; | |
758 | struct btrfs_workqueue *endio_meta_write_workers; | |
759 | struct btrfs_workqueue *endio_write_workers; | |
760 | struct btrfs_workqueue *endio_freespace_worker; | |
d458b054 QW |
761 | struct btrfs_workqueue *caching_workers; |
762 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 763 | |
247e743c CM |
764 | /* |
765 | * fixup workers take dirty pages that didn't properly go through | |
766 | * the cow mechanism and make them safe to write. It happens | |
767 | * for the sys_munmap function call path | |
768 | */ | |
d458b054 QW |
769 | struct btrfs_workqueue *fixup_workers; |
770 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b | 771 | |
a74a4b97 CM |
772 | struct task_struct *transaction_kthread; |
773 | struct task_struct *cleaner_kthread; | |
f7b885be | 774 | u32 thread_pool_size; |
8b712842 | 775 | |
6ab0a202 | 776 | struct kobject *space_info_kobj; |
49e5fb46 | 777 | struct kobject *qgroups_kobj; |
9f5fae2f | 778 | |
324ae4df | 779 | u64 total_pinned; |
b9473439 | 780 | |
e2d84521 MX |
781 | /* used to keep from writing metadata until there is a nice batch */ |
782 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 783 | struct percpu_counter delalloc_bytes; |
4297ff84 | 784 | struct percpu_counter dio_bytes; |
e2d84521 | 785 | s32 dirty_metadata_batch; |
963d678b MX |
786 | s32 delalloc_batch; |
787 | ||
0b86a832 CM |
788 | struct list_head dirty_cowonly_roots; |
789 | ||
8a4b83cc | 790 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
791 | |
792 | /* | |
dc2d3005 JM |
793 | * The space_info list is effectively read only after initial |
794 | * setup. It is populated at mount time and cleaned up after | |
795 | * all block groups are removed. RCU is used to protect it. | |
4184ea7f | 796 | */ |
6324fbf3 | 797 | struct list_head space_info; |
4184ea7f | 798 | |
b4d7c3c9 LZ |
799 | struct btrfs_space_info *data_sinfo; |
800 | ||
5d4f98a2 YZ |
801 | struct reloc_control *reloc_ctl; |
802 | ||
583b7231 | 803 | /* data_alloc_cluster is only used in ssd_spread mode */ |
fa9c0d79 CM |
804 | struct btrfs_free_cluster data_alloc_cluster; |
805 | ||
806 | /* all metadata allocations go through this cluster */ | |
807 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 808 | |
4cb5300b CM |
809 | /* auto defrag inodes go here */ |
810 | spinlock_t defrag_inodes_lock; | |
811 | struct rb_root defrag_inodes; | |
812 | atomic_t defrag_running; | |
813 | ||
de98ced9 MX |
814 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
815 | seqlock_t profiles_lock; | |
a46d11a8 ID |
816 | /* |
817 | * these three are in extended format (availability of single | |
818 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
819 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
820 | */ | |
d18a2c44 CM |
821 | u64 avail_data_alloc_bits; |
822 | u64 avail_metadata_alloc_bits; | |
823 | u64 avail_system_alloc_bits; | |
788f20eb | 824 | |
c9e9f97b ID |
825 | /* restriper state */ |
826 | spinlock_t balance_lock; | |
827 | struct mutex balance_mutex; | |
837d5b6e | 828 | atomic_t balance_pause_req; |
a7e99c69 | 829 | atomic_t balance_cancel_req; |
c9e9f97b | 830 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 831 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 832 | |
d612ac59 AJ |
833 | u32 data_chunk_allocations; |
834 | u32 metadata_ratio; | |
97e728d4 | 835 | |
788f20eb | 836 | void *bdev_holder; |
acce952b | 837 | |
a2de733c AJ |
838 | /* private scrub information */ |
839 | struct mutex scrub_lock; | |
840 | atomic_t scrubs_running; | |
841 | atomic_t scrub_pause_req; | |
842 | atomic_t scrubs_paused; | |
843 | atomic_t scrub_cancel_req; | |
844 | wait_queue_head_t scrub_pause_wait; | |
c8352942 DS |
845 | /* |
846 | * The worker pointers are NULL iff the refcount is 0, ie. scrub is not | |
847 | * running. | |
848 | */ | |
ff09c4ca | 849 | refcount_t scrub_workers_refcnt; |
d458b054 QW |
850 | struct btrfs_workqueue *scrub_workers; |
851 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
20b2e302 | 852 | struct btrfs_workqueue *scrub_parity_workers; |
a2de733c | 853 | |
b0643e59 DZ |
854 | struct btrfs_discard_ctl discard_ctl; |
855 | ||
21adbd5c SB |
856 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
857 | u32 check_integrity_print_mask; | |
858 | #endif | |
416ac51d AJ |
859 | /* is qgroup tracking in a consistent state? */ |
860 | u64 qgroup_flags; | |
861 | ||
862 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
863 | struct rb_root qgroup_tree; | |
864 | spinlock_t qgroup_lock; | |
865 | ||
1e8f9158 WS |
866 | /* |
867 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
868 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
869 | */ | |
870 | struct ulist *qgroup_ulist; | |
871 | ||
f2f6ed3d WS |
872 | /* protect user change for quota operations */ |
873 | struct mutex qgroup_ioctl_lock; | |
874 | ||
416ac51d AJ |
875 | /* list of dirty qgroups to be written at next commit */ |
876 | struct list_head dirty_qgroups; | |
877 | ||
e69bcee3 | 878 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 879 | u64 qgroup_seq; |
21adbd5c | 880 | |
2f232036 JS |
881 | /* qgroup rescan items */ |
882 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
883 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 884 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 885 | struct completion qgroup_rescan_completion; |
b382a324 | 886 | struct btrfs_work qgroup_rescan_work; |
d2c609b8 | 887 | bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ |
2f232036 | 888 | |
acce952b | 889 | /* filesystem state */ |
87533c47 | 890 | unsigned long fs_state; |
16cdcec7 MX |
891 | |
892 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 893 | |
90519d66 AJ |
894 | /* readahead tree */ |
895 | spinlock_t reada_lock; | |
896 | struct radix_tree_root reada_tree; | |
531f4b1a | 897 | |
2fefd558 ZL |
898 | /* readahead works cnt */ |
899 | atomic_t reada_works_cnt; | |
900 | ||
f28491e0 JB |
901 | /* Extent buffer radix tree */ |
902 | spinlock_t buffer_lock; | |
903 | struct radix_tree_root buffer_radix; | |
904 | ||
af31f5e5 CM |
905 | /* next backup root to be overwritten */ |
906 | int backup_root_index; | |
5af3e8cc | 907 | |
e922e087 SB |
908 | /* device replace state */ |
909 | struct btrfs_dev_replace dev_replace; | |
5ac00add | 910 | |
803b2f54 | 911 | struct semaphore uuid_tree_rescan_sem; |
21c7e756 MX |
912 | |
913 | /* Used to reclaim the metadata space in the background. */ | |
914 | struct work_struct async_reclaim_work; | |
47ab2a6c JB |
915 | |
916 | spinlock_t unused_bgs_lock; | |
917 | struct list_head unused_bgs; | |
d4b450cd | 918 | struct mutex unused_bg_unpin_mutex; |
67c5e7d4 | 919 | struct mutex delete_unused_bgs_mutex; |
f667aef6 | 920 | |
da17066c JM |
921 | /* Cached block sizes */ |
922 | u32 nodesize; | |
923 | u32 sectorsize; | |
924 | u32 stripesize; | |
fd708b81 | 925 | |
eede2bf3 OS |
926 | /* Block groups and devices containing active swapfiles. */ |
927 | spinlock_t swapfile_pins_lock; | |
928 | struct rb_root swapfile_pins; | |
929 | ||
6d97c6e3 JT |
930 | struct crypto_shash *csum_shash; |
931 | ||
9e967495 FM |
932 | /* |
933 | * Number of send operations in progress. | |
934 | * Updated while holding fs_info::balance_mutex. | |
935 | */ | |
936 | int send_in_progress; | |
937 | ||
fd708b81 JB |
938 | #ifdef CONFIG_BTRFS_FS_REF_VERIFY |
939 | spinlock_t ref_verify_lock; | |
940 | struct rb_root block_tree; | |
941 | #endif | |
93945cb4 DZ |
942 | |
943 | #ifdef CONFIG_BTRFS_DEBUG | |
944 | struct kobject *debug_kobj; | |
e4faab84 | 945 | struct kobject *discard_debug_kobj; |
bd647ce3 | 946 | struct list_head allocated_roots; |
3fd63727 JB |
947 | |
948 | spinlock_t eb_leak_lock; | |
949 | struct list_head allocated_ebs; | |
93945cb4 | 950 | #endif |
324ae4df | 951 | }; |
0b86a832 | 952 | |
da17066c JM |
953 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
954 | { | |
955 | return sb->s_fs_info; | |
956 | } | |
957 | ||
27cdeb70 MX |
958 | /* |
959 | * The state of btrfs root | |
960 | */ | |
61fa90c1 DS |
961 | enum { |
962 | /* | |
963 | * btrfs_record_root_in_trans is a multi-step process, and it can race | |
964 | * with the balancing code. But the race is very small, and only the | |
965 | * first time the root is added to each transaction. So IN_TRANS_SETUP | |
966 | * is used to tell us when more checks are required | |
967 | */ | |
968 | BTRFS_ROOT_IN_TRANS_SETUP, | |
92a7cc42 QW |
969 | |
970 | /* | |
971 | * Set if tree blocks of this root can be shared by other roots. | |
972 | * Only subvolume trees and their reloc trees have this bit set. | |
973 | * Conflicts with TRACK_DIRTY bit. | |
974 | * | |
975 | * This affects two things: | |
976 | * | |
977 | * - How balance works | |
978 | * For shareable roots, we need to use reloc tree and do path | |
979 | * replacement for balance, and need various pre/post hooks for | |
980 | * snapshot creation to handle them. | |
981 | * | |
982 | * While for non-shareable trees, we just simply do a tree search | |
983 | * with COW. | |
984 | * | |
985 | * - How dirty roots are tracked | |
986 | * For shareable roots, btrfs_record_root_in_trans() is needed to | |
987 | * track them, while non-subvolume roots have TRACK_DIRTY bit, they | |
988 | * don't need to set this manually. | |
989 | */ | |
990 | BTRFS_ROOT_SHAREABLE, | |
61fa90c1 DS |
991 | BTRFS_ROOT_TRACK_DIRTY, |
992 | BTRFS_ROOT_IN_RADIX, | |
993 | BTRFS_ROOT_ORPHAN_ITEM_INSERTED, | |
994 | BTRFS_ROOT_DEFRAG_RUNNING, | |
995 | BTRFS_ROOT_FORCE_COW, | |
996 | BTRFS_ROOT_MULTI_LOG_TASKS, | |
997 | BTRFS_ROOT_DIRTY, | |
83354f07 | 998 | BTRFS_ROOT_DELETING, |
d2311e69 QW |
999 | |
1000 | /* | |
1001 | * Reloc tree is orphan, only kept here for qgroup delayed subtree scan | |
1002 | * | |
1003 | * Set for the subvolume tree owning the reloc tree. | |
1004 | */ | |
1005 | BTRFS_ROOT_DEAD_RELOC_TREE, | |
78c52d9e JB |
1006 | /* Mark dead root stored on device whose cleanup needs to be resumed */ |
1007 | BTRFS_ROOT_DEAD_TREE, | |
e7a79811 FM |
1008 | /* The root has a log tree. Used only for subvolume roots. */ |
1009 | BTRFS_ROOT_HAS_LOG_TREE, | |
c53e9653 QW |
1010 | /* Qgroup flushing is in progress */ |
1011 | BTRFS_ROOT_QGROUP_FLUSHING, | |
61fa90c1 | 1012 | }; |
27cdeb70 | 1013 | |
370a11b8 QW |
1014 | /* |
1015 | * Record swapped tree blocks of a subvolume tree for delayed subtree trace | |
1016 | * code. For detail check comment in fs/btrfs/qgroup.c. | |
1017 | */ | |
1018 | struct btrfs_qgroup_swapped_blocks { | |
1019 | spinlock_t lock; | |
1020 | /* RM_EMPTY_ROOT() of above blocks[] */ | |
1021 | bool swapped; | |
1022 | struct rb_root blocks[BTRFS_MAX_LEVEL]; | |
1023 | }; | |
1024 | ||
9f5fae2f CM |
1025 | /* |
1026 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1027 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1028 | */ |
1029 | struct btrfs_root { | |
5f39d397 | 1030 | struct extent_buffer *node; |
925baedd | 1031 | |
5f39d397 | 1032 | struct extent_buffer *commit_root; |
e02119d5 | 1033 | struct btrfs_root *log_root; |
1a40e23b | 1034 | struct btrfs_root *reloc_root; |
31153d81 | 1035 | |
27cdeb70 | 1036 | unsigned long state; |
62e2749e CM |
1037 | struct btrfs_root_item root_item; |
1038 | struct btrfs_key root_key; | |
9f5fae2f | 1039 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1040 | struct extent_io_tree dirty_log_pages; |
1041 | ||
a2135011 | 1042 | struct mutex objectid_mutex; |
7237f183 | 1043 | |
f0486c68 YZ |
1044 | spinlock_t accounting_lock; |
1045 | struct btrfs_block_rsv *block_rsv; | |
1046 | ||
581bb050 | 1047 | /* free ino cache stuff */ |
581bb050 | 1048 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1049 | enum btrfs_caching_type ino_cache_state; |
1050 | spinlock_t ino_cache_lock; | |
1051 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1052 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1053 | u64 ino_cache_progress; |
1054 | struct inode *ino_cache_inode; | |
581bb050 | 1055 | |
e02119d5 | 1056 | struct mutex log_mutex; |
7237f183 YZ |
1057 | wait_queue_head_t log_writer_wait; |
1058 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1059 | struct list_head log_ctxs[2]; |
a93e0168 | 1060 | /* Used only for log trees of subvolumes, not for the log root tree */ |
7237f183 YZ |
1061 | atomic_t log_writers; |
1062 | atomic_t log_commit[2]; | |
28a95795 | 1063 | /* Used only for log trees of subvolumes, not for the log root tree */ |
2ecb7923 | 1064 | atomic_t log_batch; |
bb14a59b | 1065 | int log_transid; |
d1433deb MX |
1066 | /* No matter the commit succeeds or not*/ |
1067 | int log_transid_committed; | |
1068 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1069 | int last_log_commit; |
ff782e0a | 1070 | pid_t log_start_pid; |
ea8c2819 | 1071 | |
0f7d52f4 | 1072 | u64 last_trans; |
5f39d397 | 1073 | |
9f5fae2f | 1074 | u32 type; |
13a8a7c8 YZ |
1075 | |
1076 | u64 highest_objectid; | |
7585717f | 1077 | |
6702ed49 | 1078 | struct btrfs_key defrag_progress; |
0ef3e66b | 1079 | struct btrfs_key defrag_max; |
0b86a832 | 1080 | |
92a7cc42 | 1081 | /* The dirty list is only used by non-shareable roots */ |
0b86a832 | 1082 | struct list_head dirty_list; |
7b128766 | 1083 | |
5d4f98a2 YZ |
1084 | struct list_head root_list; |
1085 | ||
2ab28f32 JB |
1086 | spinlock_t log_extents_lock[2]; |
1087 | struct list_head logged_list[2]; | |
1088 | ||
d68fc57b | 1089 | int orphan_cleanup_state; |
3394e160 | 1090 | |
5d4f98a2 YZ |
1091 | spinlock_t inode_lock; |
1092 | /* red-black tree that keeps track of in-memory inodes */ | |
1093 | struct rb_root inode_tree; | |
1094 | ||
16cdcec7 MX |
1095 | /* |
1096 | * radix tree that keeps track of delayed nodes of every inode, | |
1097 | * protected by inode_lock | |
1098 | */ | |
1099 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1100 | /* |
1101 | * right now this just gets used so that a root has its own devid | |
1102 | * for stat. It may be used for more later | |
1103 | */ | |
0ee5dc67 | 1104 | dev_t anon_dev; |
f1ebcc74 | 1105 | |
5f3ab90a | 1106 | spinlock_t root_item_lock; |
0700cea7 | 1107 | refcount_t refs; |
eb73c1b7 | 1108 | |
573bfb72 | 1109 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1110 | spinlock_t delalloc_lock; |
1111 | /* | |
1112 | * all of the inodes that have delalloc bytes. It is possible for | |
1113 | * this list to be empty even when there is still dirty data=ordered | |
1114 | * extents waiting to finish IO. | |
1115 | */ | |
1116 | struct list_head delalloc_inodes; | |
1117 | struct list_head delalloc_root; | |
1118 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1119 | |
1120 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1121 | /* |
1122 | * this is used by the balancing code to wait for all the pending | |
1123 | * ordered extents | |
1124 | */ | |
1125 | spinlock_t ordered_extent_lock; | |
1126 | ||
1127 | /* | |
1128 | * all of the data=ordered extents pending writeback | |
1129 | * these can span multiple transactions and basically include | |
1130 | * every dirty data page that isn't from nodatacow | |
1131 | */ | |
1132 | struct list_head ordered_extents; | |
1133 | struct list_head ordered_root; | |
1134 | u64 nr_ordered_extents; | |
2c686537 | 1135 | |
d2311e69 QW |
1136 | /* |
1137 | * Not empty if this subvolume root has gone through tree block swap | |
1138 | * (relocation) | |
1139 | * | |
1140 | * Will be used by reloc_control::dirty_subvol_roots. | |
1141 | */ | |
1142 | struct list_head reloc_dirty_list; | |
1143 | ||
2c686537 DS |
1144 | /* |
1145 | * Number of currently running SEND ioctls to prevent | |
1146 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1147 | */ | |
1148 | int send_in_progress; | |
62d54f3a FM |
1149 | /* |
1150 | * Number of currently running deduplication operations that have a | |
1151 | * destination inode belonging to this root. Protected by the lock | |
1152 | * root_item_lock. | |
1153 | */ | |
1154 | int dedupe_in_progress; | |
dcc3eb96 NB |
1155 | /* For exclusion of snapshot creation and nocow writes */ |
1156 | struct btrfs_drew_lock snapshot_lock; | |
1157 | ||
8ecebf4d | 1158 | atomic_t snapshot_force_cow; |
8287475a QW |
1159 | |
1160 | /* For qgroup metadata reserved space */ | |
1161 | spinlock_t qgroup_meta_rsv_lock; | |
1162 | u64 qgroup_meta_rsv_pertrans; | |
1163 | u64 qgroup_meta_rsv_prealloc; | |
c53e9653 | 1164 | wait_queue_head_t qgroup_flush_wait; |
57ec5fb4 | 1165 | |
eede2bf3 OS |
1166 | /* Number of active swapfiles */ |
1167 | atomic_t nr_swapfiles; | |
1168 | ||
370a11b8 QW |
1169 | /* Record pairs of swapped blocks for qgroup */ |
1170 | struct btrfs_qgroup_swapped_blocks swapped_blocks; | |
1171 | ||
e289f03e FM |
1172 | /* Used only by log trees, when logging csum items */ |
1173 | struct extent_io_tree log_csum_range; | |
1174 | ||
57ec5fb4 DS |
1175 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
1176 | u64 alloc_bytenr; | |
1177 | #endif | |
bd647ce3 JB |
1178 | |
1179 | #ifdef CONFIG_BTRFS_DEBUG | |
1180 | struct list_head leak_list; | |
1181 | #endif | |
62e2749e | 1182 | }; |
118c701e | 1183 | |
690a5dbf FM |
1184 | struct btrfs_clone_extent_info { |
1185 | u64 disk_offset; | |
1186 | u64 disk_len; | |
1187 | u64 data_offset; | |
1188 | u64 data_len; | |
1189 | u64 file_offset; | |
1190 | char *extent_buf; | |
1191 | u32 item_size; | |
1192 | }; | |
1193 | ||
23b5ec74 | 1194 | struct btrfs_file_private { |
23b5ec74 JB |
1195 | void *filldir_buf; |
1196 | }; | |
1197 | ||
da17066c JM |
1198 | static inline u32 btrfs_inode_sectorsize(const struct inode *inode) |
1199 | { | |
1200 | return btrfs_sb(inode->i_sb)->sectorsize; | |
1201 | } | |
62e2749e | 1202 | |
da17066c | 1203 | static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1204 | { |
118c701e NB |
1205 | |
1206 | return info->nodesize - sizeof(struct btrfs_header); | |
1db1ff92 JM |
1207 | } |
1208 | ||
3d9ec8c4 NB |
1209 | #define BTRFS_LEAF_DATA_OFFSET offsetof(struct btrfs_leaf, items) |
1210 | ||
da17066c | 1211 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1212 | { |
da17066c | 1213 | return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item); |
1db1ff92 JM |
1214 | } |
1215 | ||
da17066c | 1216 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info) |
1db1ff92 | 1217 | { |
da17066c | 1218 | return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr); |
1db1ff92 JM |
1219 | } |
1220 | ||
1221 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ | |
1222 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
da17066c | 1223 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1224 | { |
da17066c | 1225 | return BTRFS_MAX_ITEM_SIZE(info) - |
1db1ff92 JM |
1226 | BTRFS_FILE_EXTENT_INLINE_DATA_START; |
1227 | } | |
1228 | ||
da17066c | 1229 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1230 | { |
da17066c | 1231 | return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item); |
1db1ff92 JM |
1232 | } |
1233 | ||
0942caa3 DS |
1234 | /* |
1235 | * Flags for mount options. | |
1236 | * | |
1237 | * Note: don't forget to add new options to btrfs_show_options() | |
1238 | */ | |
21ad10cf CM |
1239 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1240 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1241 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1242 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1243 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1244 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1245 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1246 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1247 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1248 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
46b27f50 | 1249 | #define BTRFS_MOUNT_DISCARD_SYNC (1 << 10) |
a555f810 | 1250 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1251 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1252 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1253 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1254 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1255 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1256 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
8dcddfa0 | 1257 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
9555c6c1 | 1258 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1259 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1260 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1261 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 1262 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
d0bd4560 JB |
1263 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
1264 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) | |
f7d3d2f9 | 1265 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
96da0919 | 1266 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
fb592373 | 1267 | #define BTRFS_MOUNT_REF_VERIFY (1 << 28) |
b0643e59 | 1268 | #define BTRFS_MOUNT_DISCARD_ASYNC (1 << 29) |
b6cda9bc | 1269 | |
8b87dc17 | 1270 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1271 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1272 | |
b6cda9bc CM |
1273 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1274 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1275 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
3cdde224 | 1276 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
b6cda9bc | 1277 | BTRFS_MOUNT_##opt) |
572d9ab7 | 1278 | |
3cdde224 | 1279 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
60f8667b | 1280 | do { \ |
3cdde224 JM |
1281 | if (!btrfs_test_opt(fs_info, opt)) \ |
1282 | btrfs_info(fs_info, fmt, ##args); \ | |
1283 | btrfs_set_opt(fs_info->mount_opt, opt); \ | |
60f8667b | 1284 | } while (0) |
9d89ce65 | 1285 | |
3cdde224 | 1286 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
60f8667b | 1287 | do { \ |
3cdde224 JM |
1288 | if (btrfs_test_opt(fs_info, opt)) \ |
1289 | btrfs_info(fs_info, fmt, ##args); \ | |
1290 | btrfs_clear_opt(fs_info->mount_opt, opt); \ | |
60f8667b | 1291 | } while (0) |
9d89ce65 | 1292 | |
572d9ab7 DS |
1293 | /* |
1294 | * Requests for changes that need to be done during transaction commit. | |
1295 | * | |
1296 | * Internal mount options that are used for special handling of the real | |
1297 | * mount options (eg. cannot be set during remount and have to be set during | |
1298 | * transaction commit) | |
1299 | */ | |
1300 | ||
7e1876ac DS |
1301 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
1302 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) | |
d51033d0 | 1303 | #define BTRFS_PENDING_COMMIT (2) |
7e1876ac | 1304 | |
572d9ab7 DS |
1305 | #define btrfs_test_pending(info, opt) \ |
1306 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1307 | #define btrfs_set_pending(info, opt) \ | |
1308 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1309 | #define btrfs_clear_pending(info, opt) \ | |
1310 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1311 | ||
1312 | /* | |
1313 | * Helpers for setting pending mount option changes. | |
1314 | * | |
1315 | * Expects corresponding macros | |
1316 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1317 | */ | |
1318 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1319 | do { \ | |
1320 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1321 | btrfs_info((info), fmt, ##args); \ | |
1322 | btrfs_set_pending((info), SET_##opt); \ | |
1323 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1324 | } \ | |
1325 | } while(0) | |
1326 | ||
1327 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1328 | do { \ | |
1329 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1330 | btrfs_info((info), fmt, ##args); \ | |
1331 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1332 | btrfs_clear_pending((info), SET_##opt); \ | |
1333 | } \ | |
1334 | } while(0) | |
1335 | ||
b98b6767 Y |
1336 | /* |
1337 | * Inode flags | |
1338 | */ | |
fdebe2bd Y |
1339 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1340 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1341 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1342 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1343 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1344 | #define BTRFS_INODE_SYNC (1 << 5) |
1345 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1346 | #define BTRFS_INODE_APPEND (1 << 7) | |
1347 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1348 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1349 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1350 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1351 | |
08fe4db1 LZ |
1352 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1353 | ||
496245ca QW |
1354 | #define BTRFS_INODE_FLAG_MASK \ |
1355 | (BTRFS_INODE_NODATASUM | \ | |
1356 | BTRFS_INODE_NODATACOW | \ | |
1357 | BTRFS_INODE_READONLY | \ | |
1358 | BTRFS_INODE_NOCOMPRESS | \ | |
1359 | BTRFS_INODE_PREALLOC | \ | |
1360 | BTRFS_INODE_SYNC | \ | |
1361 | BTRFS_INODE_IMMUTABLE | \ | |
1362 | BTRFS_INODE_APPEND | \ | |
1363 | BTRFS_INODE_NODUMP | \ | |
1364 | BTRFS_INODE_NOATIME | \ | |
1365 | BTRFS_INODE_DIRSYNC | \ | |
1366 | BTRFS_INODE_COMPRESS | \ | |
1367 | BTRFS_INODE_ROOT_ITEM_INIT) | |
1368 | ||
cfed81a0 | 1369 | struct btrfs_map_token { |
cc4c13d5 | 1370 | struct extent_buffer *eb; |
cfed81a0 CM |
1371 | char *kaddr; |
1372 | unsigned long offset; | |
1373 | }; | |
1374 | ||
2e78c927 CR |
1375 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
1376 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) | |
1377 | ||
c82f823c DS |
1378 | static inline void btrfs_init_map_token(struct btrfs_map_token *token, |
1379 | struct extent_buffer *eb) | |
cfed81a0 | 1380 | { |
c82f823c | 1381 | token->eb = eb; |
870b388d DS |
1382 | token->kaddr = page_address(eb->pages[0]); |
1383 | token->offset = 0; | |
cfed81a0 CM |
1384 | } |
1385 | ||
01327610 | 1386 | /* some macros to generate set/get functions for the struct fields. This |
5f39d397 CM |
1387 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
1388 | * one for u8: | |
1389 | */ | |
1390 | #define le8_to_cpu(v) (v) | |
1391 | #define cpu_to_le8(v) (v) | |
1392 | #define __le8 u8 | |
1393 | ||
62e85577 | 1394 | #define read_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1395 | read_extent_buffer(eb, (char *)(result), \ |
1396 | ((unsigned long)(ptr)) + \ | |
1397 | offsetof(type, member), \ | |
1398 | sizeof(((type *)0)->member))) | |
1399 | ||
62e85577 | 1400 | #define write_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1401 | write_extent_buffer(eb, (char *)(result), \ |
1402 | ((unsigned long)(ptr)) + \ | |
1403 | offsetof(type, member), \ | |
1404 | sizeof(((type *)0)->member))) | |
1405 | ||
18077bb4 | 1406 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
cc4c13d5 DS |
1407 | u##bits btrfs_get_token_##bits(struct btrfs_map_token *token, \ |
1408 | const void *ptr, unsigned long off); \ | |
1409 | void btrfs_set_token_##bits(struct btrfs_map_token *token, \ | |
1410 | const void *ptr, unsigned long off, \ | |
1411 | u##bits val); \ | |
cb495113 DS |
1412 | u##bits btrfs_get_##bits(const struct extent_buffer *eb, \ |
1413 | const void *ptr, unsigned long off); \ | |
2b48966a | 1414 | void btrfs_set_##bits(const struct extent_buffer *eb, void *ptr, \ |
cb495113 | 1415 | unsigned long off, u##bits val); |
18077bb4 LZ |
1416 | |
1417 | DECLARE_BTRFS_SETGET_BITS(8) | |
1418 | DECLARE_BTRFS_SETGET_BITS(16) | |
1419 | DECLARE_BTRFS_SETGET_BITS(32) | |
1420 | DECLARE_BTRFS_SETGET_BITS(64) | |
1421 | ||
5f39d397 | 1422 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
1cbb1f45 JM |
1423 | static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ |
1424 | const type *s) \ | |
18077bb4 LZ |
1425 | { \ |
1426 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1427 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1428 | } \ | |
2b48966a | 1429 | static inline void btrfs_set_##name(const struct extent_buffer *eb, type *s, \ |
18077bb4 LZ |
1430 | u##bits val) \ |
1431 | { \ | |
1432 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1433 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1434 | } \ | |
cc4c13d5 DS |
1435 | static inline u##bits btrfs_token_##name(struct btrfs_map_token *token, \ |
1436 | const type *s) \ | |
18077bb4 LZ |
1437 | { \ |
1438 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
cc4c13d5 | 1439 | return btrfs_get_token_##bits(token, s, offsetof(type, member));\ |
18077bb4 | 1440 | } \ |
cc4c13d5 DS |
1441 | static inline void btrfs_set_token_##name(struct btrfs_map_token *token,\ |
1442 | type *s, u##bits val) \ | |
18077bb4 LZ |
1443 | { \ |
1444 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
cc4c13d5 | 1445 | btrfs_set_token_##bits(token, s, offsetof(type, member), val); \ |
18077bb4 | 1446 | } |
5f39d397 CM |
1447 | |
1448 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1cbb1f45 | 1449 | static inline u##bits btrfs_##name(const struct extent_buffer *eb) \ |
5f39d397 | 1450 | { \ |
1cbb1f45 | 1451 | const type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1452 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1453 | return res; \ |
5f39d397 | 1454 | } \ |
2b48966a | 1455 | static inline void btrfs_set_##name(const struct extent_buffer *eb, \ |
5f39d397 CM |
1456 | u##bits val) \ |
1457 | { \ | |
727011e0 | 1458 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1459 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1460 | } |
9078a3e1 | 1461 | |
5f39d397 | 1462 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1cbb1f45 | 1463 | static inline u##bits btrfs_##name(const type *s) \ |
5f39d397 CM |
1464 | { \ |
1465 | return le##bits##_to_cpu(s->member); \ | |
1466 | } \ | |
1467 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1468 | { \ | |
1469 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1470 | } |
1471 | ||
eca152ed | 1472 | |
2b48966a | 1473 | static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb, |
eca152ed NB |
1474 | struct btrfs_dev_item *s) |
1475 | { | |
1476 | BUILD_BUG_ON(sizeof(u64) != | |
1477 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
1478 | return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, | |
1479 | total_bytes)); | |
1480 | } | |
2b48966a | 1481 | static inline void btrfs_set_device_total_bytes(const struct extent_buffer *eb, |
eca152ed NB |
1482 | struct btrfs_dev_item *s, |
1483 | u64 val) | |
1484 | { | |
1485 | BUILD_BUG_ON(sizeof(u64) != | |
1486 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
7dfb8be1 | 1487 | WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize)); |
eca152ed NB |
1488 | btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val); |
1489 | } | |
1490 | ||
1491 | ||
0b86a832 | 1492 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
0b86a832 CM |
1493 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
1494 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1495 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1496 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1497 | start_offset, 64); | |
0b86a832 CM |
1498 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1499 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1500 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1501 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1502 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1503 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1504 | |
8a4b83cc CM |
1505 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1506 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1507 | total_bytes, 64); | |
1508 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1509 | bytes_used, 64); | |
1510 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1511 | io_align, 32); | |
1512 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1513 | io_width, 32); | |
1514 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1515 | sector_size, 32); | |
1516 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1517 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1518 | dev_group, 32); | |
1519 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1520 | seek_speed, 8); | |
1521 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1522 | bandwidth, 8); | |
2b82032c YZ |
1523 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1524 | generation, 64); | |
8a4b83cc | 1525 | |
410ba3a2 | 1526 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1527 | { |
410ba3a2 | 1528 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1529 | } |
1530 | ||
1473b24e | 1531 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1532 | { |
1473b24e | 1533 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1534 | } |
1535 | ||
e17cade2 | 1536 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1537 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1538 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1539 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1540 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1541 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1542 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1543 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1544 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1545 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1546 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1547 | ||
e17cade2 CM |
1548 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1549 | { | |
1550 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1551 | } | |
1552 | ||
1553 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1554 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1555 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1556 | stripe_len, 64); | |
1557 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1558 | io_align, 32); | |
1559 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1560 | io_width, 32); | |
1561 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1562 | sector_size, 32); | |
1563 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1564 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1565 | num_stripes, 16); | |
321aecc6 CM |
1566 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1567 | sub_stripes, 16); | |
0b86a832 CM |
1568 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1569 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1570 | ||
1571 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1572 | int nr) | |
1573 | { | |
1574 | unsigned long offset = (unsigned long)c; | |
1575 | offset += offsetof(struct btrfs_chunk, stripe); | |
1576 | offset += nr * sizeof(struct btrfs_stripe); | |
1577 | return (struct btrfs_stripe *)offset; | |
1578 | } | |
1579 | ||
a443755f CM |
1580 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1581 | { | |
1582 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1583 | } | |
1584 | ||
2b48966a | 1585 | static inline u64 btrfs_stripe_offset_nr(const struct extent_buffer *eb, |
0b86a832 CM |
1586 | struct btrfs_chunk *c, int nr) |
1587 | { | |
1588 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1589 | } | |
1590 | ||
2b48966a | 1591 | static inline u64 btrfs_stripe_devid_nr(const struct extent_buffer *eb, |
0b86a832 CM |
1592 | struct btrfs_chunk *c, int nr) |
1593 | { | |
1594 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1595 | } | |
1596 | ||
5f39d397 | 1597 | /* struct btrfs_block_group_item */ |
de0dc456 | 1598 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_used, struct btrfs_block_group_item, |
5f39d397 | 1599 | used, 64); |
0222dfdd | 1600 | BTRFS_SETGET_FUNCS(block_group_used, struct btrfs_block_group_item, |
5f39d397 | 1601 | used, 64); |
de0dc456 | 1602 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_chunk_objectid, |
0b86a832 | 1603 | struct btrfs_block_group_item, chunk_objectid, 64); |
e17cade2 | 1604 | |
0222dfdd | 1605 | BTRFS_SETGET_FUNCS(block_group_chunk_objectid, |
0b86a832 | 1606 | struct btrfs_block_group_item, chunk_objectid, 64); |
0222dfdd | 1607 | BTRFS_SETGET_FUNCS(block_group_flags, |
0b86a832 | 1608 | struct btrfs_block_group_item, flags, 64); |
de0dc456 | 1609 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_flags, |
0b86a832 | 1610 | struct btrfs_block_group_item, flags, 64); |
1e1d2701 | 1611 | |
208acb8c OS |
1612 | /* struct btrfs_free_space_info */ |
1613 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1614 | extent_count, 32); | |
1615 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1616 | ||
3954401f CM |
1617 | /* struct btrfs_inode_ref */ |
1618 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1619 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1620 | |
f186373f MF |
1621 | /* struct btrfs_inode_extref */ |
1622 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1623 | parent_objectid, 64); | |
1624 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1625 | name_len, 16); | |
1626 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1627 | ||
5f39d397 CM |
1628 | /* struct btrfs_inode_item */ |
1629 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1630 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1631 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1632 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1633 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1634 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1635 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1636 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1637 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1638 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1639 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1640 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1641 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1642 | generation, 64); | |
1643 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1644 | sequence, 64); | |
1645 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1646 | transid, 64); | |
1647 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1648 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1649 | nbytes, 64); | |
1650 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1651 | block_group, 64); | |
1652 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1653 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1654 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1655 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1656 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1657 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1658 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1659 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1660 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1661 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1662 | |
0b86a832 | 1663 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1664 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1665 | chunk_tree, 64); | |
1666 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1667 | chunk_objectid, 64); | |
1668 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1669 | chunk_offset, 64); | |
0b86a832 | 1670 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
5d4f98a2 YZ |
1671 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1672 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1673 | generation, 64); | |
1674 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1675 | |
5d4f98a2 YZ |
1676 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); |
1677 | ||
2b48966a | 1678 | static inline void btrfs_tree_block_key(const struct extent_buffer *eb, |
5d4f98a2 YZ |
1679 | struct btrfs_tree_block_info *item, |
1680 | struct btrfs_disk_key *key) | |
1681 | { | |
1682 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1683 | } | |
1684 | ||
2b48966a | 1685 | static inline void btrfs_set_tree_block_key(const struct extent_buffer *eb, |
5d4f98a2 YZ |
1686 | struct btrfs_tree_block_info *item, |
1687 | struct btrfs_disk_key *key) | |
1688 | { | |
1689 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1690 | } | |
e20d96d6 | 1691 | |
5d4f98a2 YZ |
1692 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1693 | root, 64); | |
1694 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1695 | objectid, 64); | |
1696 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1697 | offset, 64); | |
1698 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1699 | count, 32); | |
1700 | ||
1701 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1702 | count, 32); | |
1703 | ||
1704 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1705 | type, 8); | |
1706 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1707 | offset, 64); | |
1708 | ||
1709 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1710 | { | |
1711 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1712 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1713 | return sizeof(struct btrfs_extent_inline_ref); | |
1714 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1715 | return sizeof(struct btrfs_shared_data_ref) + | |
1716 | sizeof(struct btrfs_extent_inline_ref); | |
1717 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1718 | return sizeof(struct btrfs_extent_data_ref) + | |
1719 | offsetof(struct btrfs_extent_inline_ref, offset); | |
5d4f98a2 YZ |
1720 | return 0; |
1721 | } | |
1722 | ||
5f39d397 CM |
1723 | /* struct btrfs_node */ |
1724 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1725 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
1726 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
1727 | blockptr, 64); | |
1728 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
1729 | generation, 64); | |
e20d96d6 | 1730 | |
2b48966a | 1731 | static inline u64 btrfs_node_blockptr(const struct extent_buffer *eb, int nr) |
cf27e1ee | 1732 | { |
5f39d397 CM |
1733 | unsigned long ptr; |
1734 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1735 | sizeof(struct btrfs_key_ptr) * nr; | |
1736 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1737 | } |
1738 | ||
2b48966a | 1739 | static inline void btrfs_set_node_blockptr(const struct extent_buffer *eb, |
5f39d397 | 1740 | int nr, u64 val) |
cf27e1ee | 1741 | { |
5f39d397 CM |
1742 | unsigned long ptr; |
1743 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1744 | sizeof(struct btrfs_key_ptr) * nr; | |
1745 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1746 | } |
1747 | ||
2b48966a | 1748 | static inline u64 btrfs_node_ptr_generation(const struct extent_buffer *eb, int nr) |
74493f7a CM |
1749 | { |
1750 | unsigned long ptr; | |
1751 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1752 | sizeof(struct btrfs_key_ptr) * nr; | |
1753 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1754 | } | |
1755 | ||
2b48966a | 1756 | static inline void btrfs_set_node_ptr_generation(const struct extent_buffer *eb, |
74493f7a CM |
1757 | int nr, u64 val) |
1758 | { | |
1759 | unsigned long ptr; | |
1760 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1761 | sizeof(struct btrfs_key_ptr) * nr; | |
1762 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1763 | } | |
1764 | ||
810191ff | 1765 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1766 | { |
5f39d397 CM |
1767 | return offsetof(struct btrfs_node, ptrs) + |
1768 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1769 | } |
1770 | ||
1cbb1f45 | 1771 | void btrfs_node_key(const struct extent_buffer *eb, |
e644d021 CM |
1772 | struct btrfs_disk_key *disk_key, int nr); |
1773 | ||
2b48966a | 1774 | static inline void btrfs_set_node_key(const struct extent_buffer *eb, |
5f39d397 | 1775 | struct btrfs_disk_key *disk_key, int nr) |
1d4f8a0c | 1776 | { |
5f39d397 CM |
1777 | unsigned long ptr; |
1778 | ptr = btrfs_node_key_ptr_offset(nr); | |
1779 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1780 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1781 | } |
1782 | ||
5f39d397 CM |
1783 | /* struct btrfs_item */ |
1784 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1785 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
1786 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
1787 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 1788 | |
5f39d397 | 1789 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1790 | { |
5f39d397 CM |
1791 | return offsetof(struct btrfs_leaf, items) + |
1792 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1793 | } |
1794 | ||
dd3cc16b | 1795 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 1796 | { |
5f39d397 | 1797 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1798 | } |
1799 | ||
1cbb1f45 | 1800 | static inline u32 btrfs_item_end(const struct extent_buffer *eb, |
5f39d397 | 1801 | struct btrfs_item *item) |
0783fcfc | 1802 | { |
5f39d397 | 1803 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1804 | } |
1805 | ||
1cbb1f45 | 1806 | static inline u32 btrfs_item_end_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1807 | { |
dd3cc16b | 1808 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1809 | } |
1810 | ||
1cbb1f45 | 1811 | static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1812 | { |
dd3cc16b | 1813 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1814 | } |
1815 | ||
1cbb1f45 | 1816 | static inline u32 btrfs_item_size_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1817 | { |
dd3cc16b | 1818 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1819 | } |
1820 | ||
1cbb1f45 | 1821 | static inline void btrfs_item_key(const struct extent_buffer *eb, |
5f39d397 | 1822 | struct btrfs_disk_key *disk_key, int nr) |
1d4f6404 | 1823 | { |
dd3cc16b | 1824 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1825 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1826 | } |
1827 | ||
5f39d397 CM |
1828 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1829 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1830 | { |
dd3cc16b | 1831 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1832 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1833 | } |
1834 | ||
e02119d5 CM |
1835 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1836 | ||
0660b5af CM |
1837 | /* |
1838 | * struct btrfs_root_ref | |
1839 | */ | |
1840 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1841 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1842 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1843 | ||
5f39d397 | 1844 | /* struct btrfs_dir_item */ |
5103e947 | 1845 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1846 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1847 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1848 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
1849 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
1850 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
1851 | data_len, 16); | |
1852 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
1853 | name_len, 16); | |
1854 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
1855 | transid, 64); | |
1d4f6404 | 1856 | |
1cbb1f45 JM |
1857 | static inline void btrfs_dir_item_key(const struct extent_buffer *eb, |
1858 | const struct btrfs_dir_item *item, | |
5f39d397 | 1859 | struct btrfs_disk_key *key) |
1d4f6404 | 1860 | { |
5f39d397 | 1861 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1862 | } |
1863 | ||
5f39d397 CM |
1864 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1865 | struct btrfs_dir_item *item, | |
1cbb1f45 | 1866 | const struct btrfs_disk_key *key) |
a8a2ee0c | 1867 | { |
5f39d397 | 1868 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1869 | } |
1870 | ||
0af3d00b JB |
1871 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1872 | num_entries, 64); | |
1873 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1874 | num_bitmaps, 64); | |
1875 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1876 | generation, 64); | |
1877 | ||
1cbb1f45 JM |
1878 | static inline void btrfs_free_space_key(const struct extent_buffer *eb, |
1879 | const struct btrfs_free_space_header *h, | |
0af3d00b JB |
1880 | struct btrfs_disk_key *key) |
1881 | { | |
1882 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1883 | } | |
1884 | ||
1885 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1886 | struct btrfs_free_space_header *h, | |
1cbb1f45 | 1887 | const struct btrfs_disk_key *key) |
0af3d00b JB |
1888 | { |
1889 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1890 | } | |
1891 | ||
5f39d397 CM |
1892 | /* struct btrfs_disk_key */ |
1893 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1894 | objectid, 64); | |
1895 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1896 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1897 | |
ce6ef5ab DS |
1898 | #ifdef __LITTLE_ENDIAN |
1899 | ||
1900 | /* | |
1901 | * Optimized helpers for little-endian architectures where CPU and on-disk | |
1902 | * structures have the same endianness and we can skip conversions. | |
1903 | */ | |
1904 | ||
1905 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu_key, | |
1906 | const struct btrfs_disk_key *disk_key) | |
1907 | { | |
1908 | memcpy(cpu_key, disk_key, sizeof(struct btrfs_key)); | |
1909 | } | |
1910 | ||
1911 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk_key, | |
1912 | const struct btrfs_key *cpu_key) | |
1913 | { | |
1914 | memcpy(disk_key, cpu_key, sizeof(struct btrfs_key)); | |
1915 | } | |
1916 | ||
1917 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, | |
1918 | struct btrfs_key *cpu_key, int nr) | |
1919 | { | |
1920 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; | |
1921 | ||
1922 | btrfs_node_key(eb, disk_key, nr); | |
1923 | } | |
1924 | ||
1925 | static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb, | |
1926 | struct btrfs_key *cpu_key, int nr) | |
1927 | { | |
1928 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; | |
1929 | ||
1930 | btrfs_item_key(eb, disk_key, nr); | |
1931 | } | |
1932 | ||
1933 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, | |
1934 | const struct btrfs_dir_item *item, | |
1935 | struct btrfs_key *cpu_key) | |
1936 | { | |
1937 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; | |
1938 | ||
1939 | btrfs_dir_item_key(eb, item, disk_key); | |
1940 | } | |
1941 | ||
1942 | #else | |
1943 | ||
e2fa7227 | 1944 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
310712b2 | 1945 | const struct btrfs_disk_key *disk) |
e2fa7227 CM |
1946 | { |
1947 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1948 | cpu->type = disk->type; |
e2fa7227 CM |
1949 | cpu->objectid = le64_to_cpu(disk->objectid); |
1950 | } | |
1951 | ||
1952 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
310712b2 | 1953 | const struct btrfs_key *cpu) |
e2fa7227 CM |
1954 | { |
1955 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1956 | disk->type = cpu->type; |
e2fa7227 CM |
1957 | disk->objectid = cpu_to_le64(cpu->objectid); |
1958 | } | |
1959 | ||
1cbb1f45 JM |
1960 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, |
1961 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1962 | { |
5f39d397 CM |
1963 | struct btrfs_disk_key disk_key; |
1964 | btrfs_node_key(eb, &disk_key, nr); | |
1965 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1966 | } |
1967 | ||
1cbb1f45 JM |
1968 | static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb, |
1969 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1970 | { |
5f39d397 CM |
1971 | struct btrfs_disk_key disk_key; |
1972 | btrfs_item_key(eb, &disk_key, nr); | |
1973 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1974 | } |
1975 | ||
1cbb1f45 JM |
1976 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, |
1977 | const struct btrfs_dir_item *item, | |
1978 | struct btrfs_key *key) | |
4d775673 | 1979 | { |
5f39d397 CM |
1980 | struct btrfs_disk_key disk_key; |
1981 | btrfs_dir_item_key(eb, item, &disk_key); | |
1982 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1983 | } |
1984 | ||
ce6ef5ab DS |
1985 | #endif |
1986 | ||
5f39d397 | 1987 | /* struct btrfs_header */ |
db94535d | 1988 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1989 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1990 | generation, 64); | |
1991 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1992 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1993 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1994 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
1995 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
1996 | generation, 64); | |
1997 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
1998 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
1999 | nritems, 32); | |
2000 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2001 | |
1cbb1f45 | 2002 | static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag) |
63b10fc4 CM |
2003 | { |
2004 | return (btrfs_header_flags(eb) & flag) == flag; | |
2005 | } | |
2006 | ||
80fbc341 | 2007 | static inline void btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) |
63b10fc4 CM |
2008 | { |
2009 | u64 flags = btrfs_header_flags(eb); | |
2010 | btrfs_set_header_flags(eb, flags | flag); | |
63b10fc4 CM |
2011 | } |
2012 | ||
80fbc341 | 2013 | static inline void btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) |
63b10fc4 CM |
2014 | { |
2015 | u64 flags = btrfs_header_flags(eb); | |
2016 | btrfs_set_header_flags(eb, flags & ~flag); | |
63b10fc4 CM |
2017 | } |
2018 | ||
1cbb1f45 | 2019 | static inline int btrfs_header_backref_rev(const struct extent_buffer *eb) |
5d4f98a2 YZ |
2020 | { |
2021 | u64 flags = btrfs_header_flags(eb); | |
2022 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2023 | } | |
2024 | ||
2025 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2026 | int rev) | |
2027 | { | |
2028 | u64 flags = btrfs_header_flags(eb); | |
2029 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2030 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2031 | btrfs_set_header_flags(eb, flags); | |
2032 | } | |
2033 | ||
1cbb1f45 | 2034 | static inline int btrfs_is_leaf(const struct extent_buffer *eb) |
3768f368 | 2035 | { |
d397712b | 2036 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2037 | } |
2038 | ||
5f39d397 | 2039 | /* struct btrfs_root_item */ |
84234f3a YZ |
2040 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2041 | generation, 64); | |
5f39d397 | 2042 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2043 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2044 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2045 | |
84234f3a YZ |
2046 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2047 | generation, 64); | |
db94535d CM |
2048 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2049 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2050 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2051 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2052 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2053 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2054 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2055 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2056 | last_snapshot, 64); | |
8ea05e3a AB |
2057 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2058 | generation_v2, 64); | |
2059 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2060 | ctransid, 64); | |
2061 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2062 | otransid, 64); | |
2063 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2064 | stransid, 64); | |
2065 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2066 | rtransid, 64); | |
123abc88 | 2067 | |
1cbb1f45 | 2068 | static inline bool btrfs_root_readonly(const struct btrfs_root *root) |
b83cc969 | 2069 | { |
6ed3cf2c | 2070 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2071 | } |
2072 | ||
1cbb1f45 | 2073 | static inline bool btrfs_root_dead(const struct btrfs_root *root) |
521e0546 DS |
2074 | { |
2075 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2076 | } | |
2077 | ||
af31f5e5 CM |
2078 | /* struct btrfs_root_backup */ |
2079 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2080 | tree_root, 64); | |
2081 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2082 | tree_root_gen, 64); | |
2083 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2084 | tree_root_level, 8); | |
2085 | ||
2086 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2087 | chunk_root, 64); | |
2088 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2089 | chunk_root_gen, 64); | |
2090 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2091 | chunk_root_level, 8); | |
2092 | ||
2093 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2094 | extent_root, 64); | |
2095 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2096 | extent_root_gen, 64); | |
2097 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2098 | extent_root_level, 8); | |
2099 | ||
2100 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2101 | fs_root, 64); | |
2102 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2103 | fs_root_gen, 64); | |
2104 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2105 | fs_root_level, 8); | |
2106 | ||
2107 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2108 | dev_root, 64); | |
2109 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2110 | dev_root_gen, 64); | |
2111 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2112 | dev_root_level, 8); | |
2113 | ||
2114 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2115 | csum_root, 64); | |
2116 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2117 | csum_root_gen, 64); | |
2118 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2119 | csum_root_level, 8); | |
2120 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2121 | total_bytes, 64); | |
2122 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2123 | bytes_used, 64); | |
2124 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2125 | num_devices, 64); | |
2126 | ||
0940ebf6 ID |
2127 | /* struct btrfs_balance_item */ |
2128 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2129 | |
1cbb1f45 JM |
2130 | static inline void btrfs_balance_data(const struct extent_buffer *eb, |
2131 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2132 | struct btrfs_disk_balance_args *ba) |
2133 | { | |
2134 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2135 | } | |
2136 | ||
2137 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
1cbb1f45 JM |
2138 | struct btrfs_balance_item *bi, |
2139 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2140 | { |
2141 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2142 | } | |
2143 | ||
1cbb1f45 JM |
2144 | static inline void btrfs_balance_meta(const struct extent_buffer *eb, |
2145 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2146 | struct btrfs_disk_balance_args *ba) |
2147 | { | |
2148 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2149 | } | |
2150 | ||
2151 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
1cbb1f45 JM |
2152 | struct btrfs_balance_item *bi, |
2153 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2154 | { |
2155 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2156 | } | |
2157 | ||
1cbb1f45 JM |
2158 | static inline void btrfs_balance_sys(const struct extent_buffer *eb, |
2159 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2160 | struct btrfs_disk_balance_args *ba) |
2161 | { | |
2162 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2163 | } | |
2164 | ||
2165 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
1cbb1f45 JM |
2166 | struct btrfs_balance_item *bi, |
2167 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2168 | { |
2169 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2170 | } | |
2171 | ||
2172 | static inline void | |
2173 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
1cbb1f45 | 2174 | const struct btrfs_disk_balance_args *disk) |
0940ebf6 ID |
2175 | { |
2176 | memset(cpu, 0, sizeof(*cpu)); | |
2177 | ||
2178 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2179 | cpu->usage = le64_to_cpu(disk->usage); | |
2180 | cpu->devid = le64_to_cpu(disk->devid); | |
2181 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2182 | cpu->pend = le64_to_cpu(disk->pend); | |
2183 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2184 | cpu->vend = le64_to_cpu(disk->vend); | |
2185 | cpu->target = le64_to_cpu(disk->target); | |
2186 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2187 | cpu->limit = le64_to_cpu(disk->limit); |
ed0df618 DS |
2188 | cpu->stripes_min = le32_to_cpu(disk->stripes_min); |
2189 | cpu->stripes_max = le32_to_cpu(disk->stripes_max); | |
0940ebf6 ID |
2190 | } |
2191 | ||
2192 | static inline void | |
2193 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
1cbb1f45 | 2194 | const struct btrfs_balance_args *cpu) |
0940ebf6 ID |
2195 | { |
2196 | memset(disk, 0, sizeof(*disk)); | |
2197 | ||
2198 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2199 | disk->usage = cpu_to_le64(cpu->usage); | |
2200 | disk->devid = cpu_to_le64(cpu->devid); | |
2201 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2202 | disk->pend = cpu_to_le64(cpu->pend); | |
2203 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2204 | disk->vend = cpu_to_le64(cpu->vend); | |
2205 | disk->target = cpu_to_le64(cpu->target); | |
2206 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2207 | disk->limit = cpu_to_le64(cpu->limit); |
ed0df618 DS |
2208 | disk->stripes_min = cpu_to_le32(cpu->stripes_min); |
2209 | disk->stripes_max = cpu_to_le32(cpu->stripes_max); | |
0940ebf6 ID |
2210 | } |
2211 | ||
2212 | /* struct btrfs_super_block */ | |
db94535d | 2213 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2214 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2215 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2216 | generation, 64); | |
2217 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2218 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2219 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2220 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2221 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2222 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2223 | root_level, 8); | |
0b86a832 CM |
2224 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2225 | chunk_root, 64); | |
2226 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2227 | chunk_root_level, 8); |
2228 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2229 | log_root, 64); | |
c3027eb5 CM |
2230 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2231 | log_root_transid, 64); | |
e02119d5 CM |
2232 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2233 | log_root_level, 8); | |
db94535d CM |
2234 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2235 | total_bytes, 64); | |
2236 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2237 | bytes_used, 64); | |
5f39d397 CM |
2238 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2239 | sectorsize, 32); | |
2240 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2241 | nodesize, 32); | |
87ee04eb CM |
2242 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2243 | stripesize, 32); | |
5f39d397 CM |
2244 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2245 | root_dir_objectid, 64); | |
8a4b83cc CM |
2246 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2247 | num_devices, 64); | |
f2b636e8 JB |
2248 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2249 | compat_flags, 64); | |
2250 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2251 | compat_ro_flags, 64); |
f2b636e8 JB |
2252 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2253 | incompat_flags, 64); | |
607d432d JB |
2254 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2255 | csum_type, 16); | |
0af3d00b JB |
2256 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2257 | cache_generation, 64); | |
3cae210f | 2258 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2259 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2260 | uuid_tree_generation, 64); | |
607d432d | 2261 | |
af024ed2 JT |
2262 | int btrfs_super_csum_size(const struct btrfs_super_block *s); |
2263 | const char *btrfs_super_csum_name(u16 csum_type); | |
b4e967be | 2264 | const char *btrfs_super_csum_driver(u16 csum_type); |
f7cea56c DS |
2265 | size_t __const btrfs_get_num_csums(void); |
2266 | ||
2e635a27 | 2267 | |
851cd173 LB |
2268 | /* |
2269 | * The leaf data grows from end-to-front in the node. | |
2270 | * this returns the address of the start of the last item, | |
2271 | * which is the stop of the leaf data stack | |
2272 | */ | |
8f881e8c | 2273 | static inline unsigned int leaf_data_end(const struct extent_buffer *leaf) |
851cd173 LB |
2274 | { |
2275 | u32 nr = btrfs_header_nritems(leaf); | |
2276 | ||
2277 | if (nr == 0) | |
8f881e8c | 2278 | return BTRFS_LEAF_DATA_SIZE(leaf->fs_info); |
851cd173 LB |
2279 | return btrfs_item_offset_nr(leaf, nr - 1); |
2280 | } | |
2281 | ||
5f39d397 | 2282 | /* struct btrfs_file_extent_item */ |
203f44c5 QW |
2283 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type, struct btrfs_file_extent_item, |
2284 | type, 8); | |
3cae210f QW |
2285 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2286 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2287 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2288 | struct btrfs_file_extent_item, offset, 64); | |
2289 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2290 | struct btrfs_file_extent_item, generation, 64); | |
2291 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2292 | struct btrfs_file_extent_item, num_bytes, 64); | |
203f44c5 QW |
2293 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes, |
2294 | struct btrfs_file_extent_item, ram_bytes, 64); | |
e20d6c5b JB |
2295 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2296 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2297 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2298 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2299 | |
d397712b | 2300 | static inline unsigned long |
1cbb1f45 | 2301 | btrfs_file_extent_inline_start(const struct btrfs_file_extent_item *e) |
236454df | 2302 | { |
7ec20afb | 2303 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2304 | } |
2305 | ||
2306 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2307 | { | |
7ec20afb | 2308 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2309 | } |
2310 | ||
203f44c5 | 2311 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); |
db94535d CM |
2312 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2313 | disk_bytenr, 64); | |
5f39d397 CM |
2314 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2315 | generation, 64); | |
db94535d CM |
2316 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2317 | disk_num_bytes, 64); | |
5f39d397 CM |
2318 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2319 | offset, 64); | |
db94535d CM |
2320 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2321 | num_bytes, 64); | |
c8b97818 CM |
2322 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2323 | ram_bytes, 64); | |
2324 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2325 | compression, 8); | |
2326 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2327 | encryption, 8); | |
2328 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2329 | other_encoding, 16); | |
2330 | ||
c8b97818 CM |
2331 | /* |
2332 | * this returns the number of bytes used by the item on disk, minus the | |
2333 | * size of any extent headers. If a file is compressed on disk, this is | |
2334 | * the compressed size | |
2335 | */ | |
1cbb1f45 JM |
2336 | static inline u32 btrfs_file_extent_inline_item_len( |
2337 | const struct extent_buffer *eb, | |
2338 | struct btrfs_item *e) | |
c8b97818 | 2339 | { |
7ec20afb | 2340 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2341 | } |
9f5fae2f | 2342 | |
630dc772 AJ |
2343 | /* btrfs_qgroup_status_item */ |
2344 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2345 | generation, 64); | |
2346 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2347 | version, 64); | |
2348 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2349 | flags, 64); | |
2f232036 JS |
2350 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2351 | rescan, 64); | |
630dc772 AJ |
2352 | |
2353 | /* btrfs_qgroup_info_item */ | |
2354 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2355 | generation, 64); | |
2356 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2357 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2358 | rfer_cmpr, 64); | |
2359 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2360 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2361 | excl_cmpr, 64); | |
2362 | ||
2363 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2364 | struct btrfs_qgroup_info_item, generation, 64); | |
2365 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2366 | rfer, 64); | |
2367 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2368 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2369 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2370 | excl, 64); | |
2371 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2372 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2373 | ||
2374 | /* btrfs_qgroup_limit_item */ | |
2375 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2376 | flags, 64); | |
2377 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2378 | max_rfer, 64); | |
2379 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2380 | max_excl, 64); | |
2381 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2382 | rsv_rfer, 64); | |
2383 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2384 | rsv_excl, 64); | |
2385 | ||
a2bff640 SB |
2386 | /* btrfs_dev_replace_item */ |
2387 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2388 | struct btrfs_dev_replace_item, src_devid, 64); | |
2389 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2390 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2391 | 64); | |
2392 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2393 | replace_state, 64); | |
2394 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2395 | time_started, 64); | |
2396 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2397 | time_stopped, 64); | |
2398 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2399 | num_write_errors, 64); | |
2400 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2401 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2402 | 64); | |
2403 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2404 | cursor_left, 64); | |
2405 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2406 | cursor_right, 64); | |
2407 | ||
2408 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2409 | struct btrfs_dev_replace_item, src_devid, 64); | |
2410 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2411 | struct btrfs_dev_replace_item, | |
2412 | cont_reading_from_srcdev_mode, 64); | |
2413 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2414 | struct btrfs_dev_replace_item, replace_state, 64); | |
2415 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2416 | struct btrfs_dev_replace_item, time_started, 64); | |
2417 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2418 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2419 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2420 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2421 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2422 | struct btrfs_dev_replace_item, | |
2423 | num_uncorrectable_read_errors, 64); | |
2424 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2425 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2426 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2427 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2428 | ||
4beb1b8b CM |
2429 | /* helper function to cast into the data area of the leaf. */ |
2430 | #define btrfs_item_ptr(leaf, slot, type) \ | |
3d9ec8c4 | 2431 | ((type *)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 CM |
2432 | btrfs_item_offset_nr(leaf, slot))) |
2433 | ||
2434 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
3d9ec8c4 | 2435 | ((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 | 2436 | btrfs_item_offset_nr(leaf, slot))) |
4beb1b8b | 2437 | |
65019df8 JT |
2438 | static inline u32 btrfs_crc32c(u32 crc, const void *address, unsigned length) |
2439 | { | |
2440 | return crc32c(crc, address, length); | |
2441 | } | |
2442 | ||
2443 | static inline void btrfs_crc32c_final(u32 crc, u8 *result) | |
2444 | { | |
2445 | put_unaligned_le32(~crc, result); | |
2446 | } | |
2447 | ||
9678c543 NB |
2448 | static inline u64 btrfs_name_hash(const char *name, int len) |
2449 | { | |
2450 | return crc32c((u32)~1, name, len); | |
2451 | } | |
2452 | ||
2453 | /* | |
2454 | * Figure the key offset of an extended inode ref | |
2455 | */ | |
2456 | static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name, | |
2457 | int len) | |
2458 | { | |
2459 | return (u64) crc32c(parent_objectid, name, len); | |
2460 | } | |
2461 | ||
3b16a4e3 JB |
2462 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2463 | { | |
c62d2555 | 2464 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2465 | } |
2466 | ||
b18c6685 | 2467 | /* extent-tree.c */ |
28f75a0e | 2468 | |
167ce953 | 2469 | enum btrfs_inline_ref_type { |
bbe339cc DS |
2470 | BTRFS_REF_TYPE_INVALID, |
2471 | BTRFS_REF_TYPE_BLOCK, | |
2472 | BTRFS_REF_TYPE_DATA, | |
2473 | BTRFS_REF_TYPE_ANY, | |
167ce953 LB |
2474 | }; |
2475 | ||
2476 | int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb, | |
2477 | struct btrfs_extent_inline_ref *iref, | |
2478 | enum btrfs_inline_ref_type is_data); | |
0785a9aa | 2479 | u64 hash_extent_data_ref(u64 root_objectid, u64 owner, u64 offset); |
167ce953 | 2480 | |
2ff7e61e | 2481 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_fs_info *fs_info, u64 csum_bytes); |
28f75a0e | 2482 | |
2bd36e7b JB |
2483 | /* |
2484 | * Use this if we would be adding new items, as we could split nodes as we cow | |
2485 | * down the tree. | |
2486 | */ | |
2487 | static inline u64 btrfs_calc_insert_metadata_size(struct btrfs_fs_info *fs_info, | |
2488 | unsigned num_items) | |
16cdcec7 | 2489 | { |
70e7af24 | 2490 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2491 | } |
2492 | ||
2493 | /* | |
2bd36e7b JB |
2494 | * Doing a truncate or a modification won't result in new nodes or leaves, just |
2495 | * what we need for COW. | |
07127184 | 2496 | */ |
2bd36e7b | 2497 | static inline u64 btrfs_calc_metadata_size(struct btrfs_fs_info *fs_info, |
07127184 JB |
2498 | unsigned num_items) |
2499 | { | |
70e7af24 | 2500 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2501 | } |
2502 | ||
6f410d1b JB |
2503 | int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info, |
2504 | u64 start, u64 num_bytes); | |
32da5386 | 2505 | void btrfs_free_excluded_extents(struct btrfs_block_group *cache); |
56bec294 | 2506 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
c79a70b1 | 2507 | unsigned long count); |
31890da0 JB |
2508 | void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info, |
2509 | struct btrfs_delayed_ref_root *delayed_refs, | |
2510 | struct btrfs_delayed_ref_head *head); | |
2ff7e61e | 2511 | int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len); |
a22285a6 | 2512 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2ff7e61e | 2513 | struct btrfs_fs_info *fs_info, u64 bytenr, |
3173a18f | 2514 | u64 offset, int metadata, u64 *refs, u64 *flags); |
b25c36f8 NB |
2515 | int btrfs_pin_extent(struct btrfs_trans_handle *trans, u64 bytenr, u64 num, |
2516 | int reserved); | |
9fce5704 | 2517 | int btrfs_pin_extent_for_log_replay(struct btrfs_trans_handle *trans, |
e688b725 | 2518 | u64 bytenr, u64 num_bytes); |
bcdc428c | 2519 | int btrfs_exclude_logged_extents(struct extent_buffer *eb); |
e4c3b2dc | 2520 | int btrfs_cross_ref_exist(struct btrfs_root *root, |
5d4f98a2 | 2521 | u64 objectid, u64 offset, u64 bytenr); |
4d75f8a9 | 2522 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
310712b2 OS |
2523 | struct btrfs_root *root, |
2524 | u64 parent, u64 root_objectid, | |
2525 | const struct btrfs_disk_key *key, | |
2526 | int level, u64 hint, | |
2527 | u64 empty_size); | |
f0486c68 YZ |
2528 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2529 | struct btrfs_root *root, | |
2530 | struct extent_buffer *buf, | |
5581a51a | 2531 | u64 parent, int last_ref); |
5d4f98a2 | 2532 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2533 | struct btrfs_root *root, u64 owner, |
5846a3c2 QW |
2534 | u64 offset, u64 ram_bytes, |
2535 | struct btrfs_key *ins); | |
5d4f98a2 | 2536 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2537 | u64 root_objectid, u64 owner, u64 offset, |
2538 | struct btrfs_key *ins); | |
18513091 | 2539 | int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, |
00361589 | 2540 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
e570fd27 | 2541 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2542 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2543 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2544 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2545 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2546 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
42c9d0b5 | 2547 | struct extent_buffer *eb, u64 flags, |
b1c79e09 | 2548 | int level, int is_data); |
ffd4bb2a | 2549 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref); |
5d4f98a2 | 2550 | |
2ff7e61e JM |
2551 | int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info, |
2552 | u64 start, u64 len, int delalloc); | |
7bfc1007 | 2553 | int btrfs_pin_reserved_extent(struct btrfs_trans_handle *trans, u64 start, |
a0fbf736 | 2554 | u64 len); |
8b74c03e | 2555 | void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info); |
5ead2dd0 | 2556 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans); |
b18c6685 | 2557 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
82fa113f | 2558 | struct btrfs_ref *generic_ref); |
5d4f98a2 | 2559 | |
2ff7e61e | 2560 | int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr); |
4184ea7f | 2561 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 | 2562 | |
fd7fb634 QW |
2563 | /* |
2564 | * Different levels for to flush space when doing space reservations. | |
2565 | * | |
2566 | * The higher the level, the more methods we try to reclaim space. | |
2567 | */ | |
08e007d2 MX |
2568 | enum btrfs_reserve_flush_enum { |
2569 | /* If we are in the transaction, we can't flush anything.*/ | |
2570 | BTRFS_RESERVE_NO_FLUSH, | |
fd7fb634 | 2571 | |
08e007d2 | 2572 | /* |
fd7fb634 QW |
2573 | * Flush space by: |
2574 | * - Running delayed inode items | |
2575 | * - Allocating a new chunk | |
08e007d2 MX |
2576 | */ |
2577 | BTRFS_RESERVE_FLUSH_LIMIT, | |
fd7fb634 QW |
2578 | |
2579 | /* | |
2580 | * Flush space by: | |
2581 | * - Running delayed inode items | |
2582 | * - Running delayed refs | |
2583 | * - Running delalloc and waiting for ordered extents | |
2584 | * - Allocating a new chunk | |
2585 | */ | |
d3984c90 | 2586 | BTRFS_RESERVE_FLUSH_EVICT, |
fd7fb634 QW |
2587 | |
2588 | /* | |
2589 | * Flush space by above mentioned methods and by: | |
2590 | * - Running delayed iputs | |
2591 | * - Commiting transaction | |
2592 | * | |
2593 | * Can be interruped by fatal signal. | |
2594 | */ | |
08e007d2 | 2595 | BTRFS_RESERVE_FLUSH_ALL, |
fd7fb634 QW |
2596 | |
2597 | /* | |
2598 | * Pretty much the same as FLUSH_ALL, but can also steal space from | |
2599 | * global rsv. | |
2600 | * | |
2601 | * Can be interruped by fatal signal. | |
2602 | */ | |
7f9fe614 | 2603 | BTRFS_RESERVE_FLUSH_ALL_STEAL, |
08e007d2 MX |
2604 | }; |
2605 | ||
f376df2b JB |
2606 | enum btrfs_flush_state { |
2607 | FLUSH_DELAYED_ITEMS_NR = 1, | |
2608 | FLUSH_DELAYED_ITEMS = 2, | |
413df725 JB |
2609 | FLUSH_DELAYED_REFS_NR = 3, |
2610 | FLUSH_DELAYED_REFS = 4, | |
2611 | FLUSH_DELALLOC = 5, | |
2612 | FLUSH_DELALLOC_WAIT = 6, | |
2613 | ALLOC_CHUNK = 7, | |
450114fc | 2614 | ALLOC_CHUNK_FORCE = 8, |
844245b4 JB |
2615 | RUN_DELAYED_IPUTS = 9, |
2616 | COMMIT_TRANS = 10, | |
f376df2b JB |
2617 | }; |
2618 | ||
d5c12070 MX |
2619 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2620 | struct btrfs_block_rsv *rsv, | |
c4c129db | 2621 | int nitems, bool use_global_rsv); |
2ff7e61e | 2622 | void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info, |
7775c818 | 2623 | struct btrfs_block_rsv *rsv); |
8702ba93 | 2624 | void btrfs_delalloc_release_extents(struct btrfs_inode *inode, u64 num_bytes); |
8b62f87b | 2625 | |
9f3db423 | 2626 | int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes); |
6d07bcec | 2627 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
2ff7e61e | 2628 | int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, |
acce952b | 2629 | u64 start, u64 end); |
2ff7e61e | 2630 | int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, |
1edb647b | 2631 | u64 num_bytes, u64 *actual_bytes); |
2ff7e61e | 2632 | int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range); |
acce952b | 2633 | |
c59021f8 | 2634 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2635 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2636 | struct btrfs_fs_info *fs_info); | |
ea14b57f DS |
2637 | int btrfs_start_write_no_snapshotting(struct btrfs_root *root); |
2638 | void btrfs_end_write_no_snapshotting(struct btrfs_root *root); | |
0bc19f90 | 2639 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
a5ed9182 | 2640 | |
dee26a9f | 2641 | /* ctree.c */ |
310712b2 | 2642 | int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key, |
e3b83361 | 2643 | int *slot); |
e1f60a65 | 2644 | int __pure btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2); |
0b86a832 CM |
2645 | int btrfs_previous_item(struct btrfs_root *root, |
2646 | struct btrfs_path *path, u64 min_objectid, | |
2647 | int type); | |
ade2e0b3 WS |
2648 | int btrfs_previous_extent_item(struct btrfs_root *root, |
2649 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
2650 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
2651 | struct btrfs_path *path, | |
310712b2 | 2652 | const struct btrfs_key *new_key); |
925baedd CM |
2653 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2654 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
84f7d8e6 | 2655 | struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root); |
e7a84565 | 2656 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 2657 | struct btrfs_key *key, int lowest_level, |
de78b51a | 2658 | u64 min_trans); |
3f157a2f | 2659 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 2660 | struct btrfs_path *path, |
3f157a2f | 2661 | u64 min_trans); |
4b231ae4 DS |
2662 | struct extent_buffer *btrfs_read_node_slot(struct extent_buffer *parent, |
2663 | int slot); | |
2664 | ||
5f39d397 CM |
2665 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2666 | struct btrfs_root *root, struct extent_buffer *buf, | |
2667 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2668 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2669 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2670 | struct btrfs_root *root, | |
2671 | struct extent_buffer *buf, | |
2672 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2673 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2674 | struct extent_buffer *buf); | |
c71dd880 | 2675 | void btrfs_extend_item(struct btrfs_path *path, u32 data_size); |
78ac4f9e | 2676 | void btrfs_truncate_item(struct btrfs_path *path, u32 new_size, int from_end); |
459931ec CM |
2677 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2678 | struct btrfs_root *root, | |
2679 | struct btrfs_path *path, | |
310712b2 | 2680 | const struct btrfs_key *new_key, |
459931ec | 2681 | unsigned long split_offset); |
ad48fd75 YZ |
2682 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2683 | struct btrfs_root *root, | |
2684 | struct btrfs_path *path, | |
310712b2 | 2685 | const struct btrfs_key *new_key); |
e33d5c3d KN |
2686 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
2687 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
310712b2 OS |
2688 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2689 | const struct btrfs_key *key, struct btrfs_path *p, | |
2690 | int ins_len, int cow); | |
2691 | int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key, | |
5d9e75c4 | 2692 | struct btrfs_path *p, u64 time_seq); |
2f38b3e1 | 2693 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
310712b2 OS |
2694 | const struct btrfs_key *key, |
2695 | struct btrfs_path *p, int find_higher, | |
2696 | int return_any); | |
6702ed49 | 2697 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2698 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 2699 | int start_slot, u64 *last_ret, |
a6b6e75e | 2700 | struct btrfs_key *progress); |
b3b4aa74 | 2701 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2702 | struct btrfs_path *btrfs_alloc_path(void); |
2703 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2704 | |
85e21bac CM |
2705 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2706 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2707 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2708 | struct btrfs_root *root, | |
2709 | struct btrfs_path *path) | |
2710 | { | |
2711 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2712 | } | |
2713 | ||
afe5fea7 | 2714 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
310712b2 | 2715 | const struct btrfs_key *cpu_key, u32 *data_size, |
143bede5 | 2716 | u32 total_data, u32 total_size, int nr); |
310712b2 OS |
2717 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2718 | const struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2719 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2720 | struct btrfs_root *root, | |
2721 | struct btrfs_path *path, | |
310712b2 OS |
2722 | const struct btrfs_key *cpu_key, u32 *data_size, |
2723 | int nr); | |
9c58309d CM |
2724 | |
2725 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2726 | struct btrfs_root *root, | |
2727 | struct btrfs_path *path, | |
310712b2 | 2728 | const struct btrfs_key *key, |
9c58309d CM |
2729 | u32 data_size) |
2730 | { | |
2731 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2732 | } | |
2733 | ||
234b63a0 | 2734 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 2735 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2736 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2737 | u64 time_seq); | |
1c8f52a5 AB |
2738 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2739 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2740 | { |
2741 | ++p->slots[0]; | |
2742 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2743 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2744 | return 0; |
2745 | } | |
1c8f52a5 AB |
2746 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2747 | { | |
2748 | return btrfs_next_old_item(root, p, 0); | |
2749 | } | |
e902baac | 2750 | int btrfs_leaf_free_space(struct extent_buffer *leaf); |
0078a9f9 NB |
2751 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, int update_ref, |
2752 | int for_reloc); | |
f82d02d9 YZ |
2753 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2754 | struct btrfs_root *root, | |
2755 | struct extent_buffer *node, | |
2756 | struct extent_buffer *parent); | |
7841cb28 DS |
2757 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2758 | { | |
2759 | /* | |
afcdd129 | 2760 | * Do it this way so we only ever do one test_bit in the normal case. |
7841cb28 | 2761 | */ |
afcdd129 JB |
2762 | if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) { |
2763 | if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags)) | |
2764 | return 2; | |
2765 | return 1; | |
2766 | } | |
2767 | return 0; | |
7841cb28 | 2768 | } |
babbf170 MX |
2769 | |
2770 | /* | |
2771 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
2772 | * anything except sleeping. This function is used to check the status of | |
2773 | * the fs. | |
2774 | */ | |
2ff7e61e | 2775 | static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info) |
babbf170 | 2776 | { |
1751e8a6 | 2777 | return fs_info->sb->s_flags & SB_RDONLY || btrfs_fs_closing(fs_info); |
babbf170 MX |
2778 | } |
2779 | ||
097b8a7c JS |
2780 | /* tree mod log functions from ctree.c */ |
2781 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2782 | struct seq_list *elem); | |
2783 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2784 | struct seq_list *elem); | |
5b6602e7 | 2785 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 2786 | |
dee26a9f | 2787 | /* root-item.c */ |
6025c19f LF |
2788 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, u64 root_id, |
2789 | u64 ref_id, u64 dirid, u64 sequence, const char *name, | |
2790 | int name_len); | |
3ee1c553 LF |
2791 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, u64 root_id, |
2792 | u64 ref_id, u64 dirid, u64 *sequence, const char *name, | |
2793 | int name_len); | |
1cd5447e | 2794 | int btrfs_del_root(struct btrfs_trans_handle *trans, |
ab9ce7d4 | 2795 | const struct btrfs_key *key); |
310712b2 OS |
2796 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2797 | const struct btrfs_key *key, | |
2798 | struct btrfs_root_item *item); | |
b45a9d8b JM |
2799 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
2800 | struct btrfs_root *root, | |
2801 | struct btrfs_key *key, | |
2802 | struct btrfs_root_item *item); | |
310712b2 | 2803 | int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key, |
cb517eab MX |
2804 | struct btrfs_path *path, struct btrfs_root_item *root_item, |
2805 | struct btrfs_key *root_key); | |
6bccf3ab | 2806 | int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info); |
bf5f32ec MF |
2807 | void btrfs_set_root_node(struct btrfs_root_item *item, |
2808 | struct extent_buffer *node); | |
08fe4db1 | 2809 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
2810 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
2811 | struct btrfs_root *root); | |
08fe4db1 | 2812 | |
07b30a49 | 2813 | /* uuid-tree.c */ |
cdb345a8 | 2814 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 2815 | u64 subid); |
d1957791 | 2816 | int btrfs_uuid_tree_remove(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 2817 | u64 subid); |
560b7a4a | 2818 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info); |
07b30a49 | 2819 | |
dee26a9f | 2820 | /* dir-item.c */ |
9c52057c CM |
2821 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
2822 | const char *name, int name_len); | |
684572df | 2823 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, const char *name, |
8e7611cf | 2824 | int name_len, struct btrfs_inode *dir, |
aec7477b | 2825 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
2826 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
2827 | struct btrfs_root *root, | |
2828 | struct btrfs_path *path, u64 dir, | |
2829 | const char *name, int name_len, | |
2830 | int mod); | |
2831 | struct btrfs_dir_item * | |
2832 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
2833 | struct btrfs_root *root, | |
2834 | struct btrfs_path *path, u64 dir, | |
2835 | u64 objectid, const char *name, int name_len, | |
2836 | int mod); | |
4df27c4d YZ |
2837 | struct btrfs_dir_item * |
2838 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
2839 | struct btrfs_path *path, u64 dirid, | |
2840 | const char *name, int name_len); | |
7e38180e CM |
2841 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
2842 | struct btrfs_root *root, | |
2843 | struct btrfs_path *path, | |
2844 | struct btrfs_dir_item *di); | |
5103e947 | 2845 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
2846 | struct btrfs_root *root, |
2847 | struct btrfs_path *path, u64 objectid, | |
2848 | const char *name, u16 name_len, | |
2849 | const void *data, u16 data_len); | |
5103e947 JB |
2850 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
2851 | struct btrfs_root *root, | |
2852 | struct btrfs_path *path, u64 dir, | |
2853 | const char *name, u16 name_len, | |
2854 | int mod); | |
2ff7e61e | 2855 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info, |
5f5bc6b1 FM |
2856 | struct btrfs_path *path, |
2857 | const char *name, | |
2858 | int name_len); | |
7b128766 JB |
2859 | |
2860 | /* orphan.c */ | |
2861 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
2862 | struct btrfs_root *root, u64 offset); | |
2863 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
2864 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 2865 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 2866 | |
dee26a9f | 2867 | /* inode-item.c */ |
3954401f CM |
2868 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
2869 | struct btrfs_root *root, | |
2870 | const char *name, int name_len, | |
aec7477b | 2871 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
2872 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
2873 | struct btrfs_root *root, | |
2874 | const char *name, int name_len, | |
aec7477b | 2875 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
2876 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
2877 | struct btrfs_root *root, | |
2878 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 2879 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
2880 | *root, struct btrfs_path *path, |
2881 | struct btrfs_key *location, int mod); | |
dee26a9f | 2882 | |
f186373f MF |
2883 | struct btrfs_inode_extref * |
2884 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
2885 | struct btrfs_root *root, | |
2886 | struct btrfs_path *path, | |
2887 | const char *name, int name_len, | |
2888 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
2889 | int cow); | |
2890 | ||
9bb8407f NB |
2891 | struct btrfs_inode_ref *btrfs_find_name_in_backref(struct extent_buffer *leaf, |
2892 | int slot, const char *name, | |
2893 | int name_len); | |
6ff49c6a NB |
2894 | struct btrfs_inode_extref *btrfs_find_name_in_ext_backref( |
2895 | struct extent_buffer *leaf, int slot, u64 ref_objectid, | |
2896 | const char *name, int name_len); | |
dee26a9f | 2897 | /* file-item.c */ |
facc8a22 | 2898 | struct btrfs_dio_private; |
459931ec | 2899 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
40e046ac | 2900 | struct btrfs_root *root, u64 bytenr, u64 len); |
1e25a2e3 | 2901 | blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, |
db72e47f | 2902 | u64 offset, u8 *dst); |
b18c6685 | 2903 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
2904 | struct btrfs_root *root, |
2905 | u64 objectid, u64 pos, | |
2906 | u64 disk_offset, u64 disk_num_bytes, | |
2907 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
2908 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
2909 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
2910 | struct btrfs_root *root, | |
2911 | struct btrfs_path *path, u64 objectid, | |
db94535d | 2912 | u64 bytenr, int mod); |
065631f6 | 2913 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 2914 | struct btrfs_root *root, |
e6dcd2dc | 2915 | struct btrfs_ordered_sum *sums); |
bd242a08 NB |
2916 | blk_status_t btrfs_csum_one_bio(struct btrfs_inode *inode, struct bio *bio, |
2917 | u64 file_start, int contig); | |
a2de733c AJ |
2918 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
2919 | struct list_head *list, int search_commit); | |
9cdc5124 | 2920 | void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode, |
7ffbb598 FM |
2921 | const struct btrfs_path *path, |
2922 | struct btrfs_file_extent_item *fi, | |
2923 | const bool new_inline, | |
2924 | struct extent_map *em); | |
41a2ee75 JB |
2925 | int btrfs_inode_clear_file_extent_range(struct btrfs_inode *inode, u64 start, |
2926 | u64 len); | |
2927 | int btrfs_inode_set_file_extent_range(struct btrfs_inode *inode, u64 start, | |
2928 | u64 len); | |
2929 | void btrfs_inode_safe_disk_i_size_write(struct inode *inode, u64 new_i_size); | |
a5eeb3d1 | 2930 | u64 btrfs_file_extent_end(const struct btrfs_path *path); |
7ffbb598 | 2931 | |
39279cc3 | 2932 | /* inode.c */ |
fc4f21b1 | 2933 | struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, |
4ab47a8d | 2934 | u64 start, u64 len); |
00361589 | 2935 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
2936 | u64 *orig_start, u64 *orig_block_len, |
2937 | u64 *ram_bytes); | |
4881ee5a | 2938 | |
2b877331 NB |
2939 | void __btrfs_del_delalloc_inode(struct btrfs_root *root, |
2940 | struct btrfs_inode *inode); | |
3de4586c | 2941 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
70ddc553 | 2942 | int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index); |
e02119d5 CM |
2943 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
2944 | struct btrfs_root *root, | |
4ec5934e | 2945 | struct btrfs_inode *dir, struct btrfs_inode *inode, |
e02119d5 CM |
2946 | const char *name, int name_len); |
2947 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
db0a669f | 2948 | struct btrfs_inode *parent_inode, struct btrfs_inode *inode, |
e02119d5 | 2949 | const char *name, int name_len, int add_backref, u64 index); |
f60a2364 | 2950 | int btrfs_delete_subvolume(struct inode *dir, struct dentry *dentry); |
9703fefe | 2951 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
2aaa6655 | 2952 | int front); |
e02119d5 CM |
2953 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
2954 | struct btrfs_root *root, | |
2955 | struct inode *inode, u64 new_size, | |
2956 | u32 min_type); | |
2957 | ||
3cd24c69 | 2958 | int btrfs_start_delalloc_snapshot(struct btrfs_root *root); |
82b3e53b | 2959 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int nr); |
c2566f22 | 2960 | int btrfs_set_extent_delalloc(struct btrfs_inode *inode, u64 start, u64 end, |
e3b8a485 | 2961 | unsigned int extra_bits, |
330a5827 | 2962 | struct extent_state **cached_state); |
d2fb3437 | 2963 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
2964 | struct btrfs_root *new_root, |
2965 | struct btrfs_root *parent_root, | |
2966 | u64 new_dirid); | |
c629732d | 2967 | void btrfs_set_delalloc_extent(struct inode *inode, struct extent_state *state, |
e06a1fc9 | 2968 | unsigned *bits); |
a36bb5f9 NB |
2969 | void btrfs_clear_delalloc_extent(struct inode *inode, |
2970 | struct extent_state *state, unsigned *bits); | |
5c848198 NB |
2971 | void btrfs_merge_delalloc_extent(struct inode *inode, struct extent_state *new, |
2972 | struct extent_state *other); | |
abbb55f4 NB |
2973 | void btrfs_split_delalloc_extent(struct inode *inode, |
2974 | struct extent_state *orig, u64 split); | |
da12fe54 NB |
2975 | int btrfs_bio_fits_in_stripe(struct page *page, size_t size, struct bio *bio, |
2976 | unsigned long bio_flags); | |
5cdc84bf | 2977 | void btrfs_set_range_writeback(struct extent_io_tree *tree, u64 start, u64 end); |
a528a241 | 2978 | vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf); |
9ebefb18 | 2979 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 2980 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 2981 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
2982 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
2983 | void btrfs_destroy_inode(struct inode *inode); | |
26602cab | 2984 | void btrfs_free_inode(struct inode *inode); |
45321ac5 | 2985 | int btrfs_drop_inode(struct inode *inode); |
f5c29bd9 | 2986 | int __init btrfs_init_cachep(void); |
e67c718b | 2987 | void __cold btrfs_destroy_cachep(void); |
0202e83f | 2988 | struct inode *btrfs_iget_path(struct super_block *s, u64 ino, |
4c66e0d4 | 2989 | struct btrfs_root *root, struct btrfs_path *path); |
0202e83f | 2990 | struct inode *btrfs_iget(struct super_block *s, u64 ino, struct btrfs_root *root); |
fc4f21b1 | 2991 | struct extent_map *btrfs_get_extent(struct btrfs_inode *inode, |
de2c6615 | 2992 | struct page *page, size_t pg_offset, |
39b07b5d | 2993 | u64 start, u64 end); |
a52d9a80 CM |
2994 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
2995 | struct btrfs_root *root, | |
2996 | struct inode *inode); | |
be6aef60 JB |
2997 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
2998 | struct btrfs_root *root, struct inode *inode); | |
73f2e545 NB |
2999 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, |
3000 | struct btrfs_inode *inode); | |
66b4ffd1 | 3001 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
a41ad394 | 3002 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
24bbcf04 | 3003 | void btrfs_add_delayed_iput(struct inode *inode); |
2ff7e61e | 3004 | void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info); |
034f784d | 3005 | int btrfs_wait_on_delayed_iputs(struct btrfs_fs_info *fs_info); |
efa56464 YZ |
3006 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3007 | u64 start, u64 num_bytes, u64 min_size, | |
3008 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3009 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3010 | struct btrfs_trans_handle *trans, int mode, | |
3011 | u64 start, u64 num_bytes, u64 min_size, | |
3012 | loff_t actual_len, u64 *alloc_hint); | |
98456b9c | 3013 | int btrfs_run_delalloc_range(struct btrfs_inode *inode, struct page *locked_page, |
5eaad97a NB |
3014 | u64 start, u64 end, int *page_started, unsigned long *nr_written, |
3015 | struct writeback_control *wbc); | |
d75855b4 | 3016 | int btrfs_writepage_cow_fixup(struct page *page, u64 start, u64 end); |
7087a9d8 | 3017 | void btrfs_writepage_endio_finish_ordered(struct page *page, u64 start, |
c629732d | 3018 | u64 end, int uptodate); |
82d339d9 | 3019 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
3020 | |
3021 | /* ioctl.c */ | |
3022 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3023 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
d5131b65 | 3024 | int btrfs_ioctl_get_supported_features(void __user *arg); |
7b6a221e | 3025 | void btrfs_sync_inode_flags_to_i_flags(struct inode *inode); |
e1f60a65 | 3026 | int __pure btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3027 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3028 | struct btrfs_ioctl_defrag_range_args *range, | |
3029 | u64 newer_than, unsigned long max_pages); | |
008ef096 DS |
3030 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3031 | struct btrfs_ioctl_space_info *space); | |
3032 | void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info, | |
35a3621b SB |
3033 | struct btrfs_ioctl_balance_args *bargs); |
3034 | ||
39279cc3 | 3035 | /* file.c */ |
f5c29bd9 | 3036 | int __init btrfs_auto_defrag_init(void); |
e67c718b | 3037 | void __cold btrfs_auto_defrag_exit(void); |
4cb5300b | 3038 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
6158e1ce | 3039 | struct btrfs_inode *inode); |
4cb5300b | 3040 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
26176e7c | 3041 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3042 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
dcdbc059 | 3043 | void btrfs_drop_extent_cache(struct btrfs_inode *inode, u64 start, u64 end, |
7014cdb4 | 3044 | int skip_pinned); |
828c0950 | 3045 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 | 3046 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
906c448c | 3047 | struct btrfs_root *root, struct btrfs_inode *inode, |
5dc562c5 | 3048 | struct btrfs_path *path, u64 start, u64 end, |
1acae57b FDBM |
3049 | u64 *drop_end, int drop_cache, |
3050 | int replace_extent, | |
3051 | u32 extent_item_size, | |
3052 | int *key_inserted); | |
5dc562c5 JB |
3053 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3054 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3055 | u64 end, int drop_cache); |
690a5dbf FM |
3056 | int btrfs_punch_hole_range(struct inode *inode, struct btrfs_path *path, |
3057 | const u64 start, const u64 end, | |
3058 | struct btrfs_clone_extent_info *clone_info, | |
3059 | struct btrfs_trans_handle **trans_out); | |
d899e052 | 3060 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
7a6d7067 | 3061 | struct btrfs_inode *inode, u64 start, u64 end); |
6bf13c0c | 3062 | int btrfs_release_file(struct inode *inode, struct file *file); |
088545f6 | 3063 | int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages, |
2ff7e61e | 3064 | size_t num_pages, loff_t pos, size_t write_bytes, |
be1a12a0 | 3065 | struct extent_state **cached); |
728404da | 3066 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
38d37aa9 QW |
3067 | int btrfs_check_nocow_lock(struct btrfs_inode *inode, loff_t pos, |
3068 | size_t *write_bytes); | |
3069 | void btrfs_check_nocow_unlock(struct btrfs_inode *inode); | |
6bf13c0c | 3070 | |
6702ed49 CM |
3071 | /* tree-defrag.c */ |
3072 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3073 | struct btrfs_root *root); |
58176a96 | 3074 | |
edbd8d4e | 3075 | /* super.c */ |
2ff7e61e | 3076 | int btrfs_parse_options(struct btrfs_fs_info *info, char *options, |
96da0919 | 3077 | unsigned long new_flags); |
6bf13c0c | 3078 | int btrfs_sync_fs(struct super_block *sb, int wait); |
c0c907a4 MPS |
3079 | char *btrfs_get_subvol_name_from_objectid(struct btrfs_fs_info *fs_info, |
3080 | u64 subvol_objectid); | |
533574c6 | 3081 | |
e67c718b | 3082 | static inline __printf(2, 3) __cold |
2fd57fcb AB |
3083 | void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
3084 | { | |
3085 | } | |
3086 | ||
533574c6 JP |
3087 | #ifdef CONFIG_PRINTK |
3088 | __printf(2, 3) | |
e67c718b | 3089 | __cold |
c2cf52eb | 3090 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 | 3091 | #else |
2fd57fcb AB |
3092 | #define btrfs_printk(fs_info, fmt, args...) \ |
3093 | btrfs_no_printk(fs_info, fmt, ##args) | |
533574c6 JP |
3094 | #endif |
3095 | ||
c2cf52eb SK |
3096 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3097 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3098 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3099 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3100 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3101 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3102 | #define btrfs_err(fs_info, fmt, args...) \ | |
3103 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3104 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3105 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3106 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3107 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3108 | #define btrfs_info(fs_info, fmt, args...) \ | |
3109 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3110 | |
08a84e25 DS |
3111 | /* |
3112 | * Wrappers that use printk_in_rcu | |
3113 | */ | |
3114 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3115 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3116 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3117 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3118 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3119 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3120 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3121 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3122 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3123 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3124 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3125 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3126 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3127 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3128 | ||
24aa6b41 DS |
3129 | /* |
3130 | * Wrappers that use a ratelimited printk_in_rcu | |
3131 | */ | |
3132 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3133 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3134 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3135 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3136 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3137 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3138 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3139 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3140 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3141 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3142 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3143 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3144 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3145 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3146 | ||
1dd6d7ca DS |
3147 | /* |
3148 | * Wrappers that use a ratelimited printk | |
3149 | */ | |
3150 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3151 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3152 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3153 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3154 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3155 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3156 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3157 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3158 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3159 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3160 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3161 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3162 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3163 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
897a41b1 JM |
3164 | |
3165 | #if defined(CONFIG_DYNAMIC_DEBUG) | |
3166 | #define btrfs_debug(fs_info, fmt, args...) \ | |
afe1a715 RV |
3167 | _dynamic_func_call_no_desc(fmt, btrfs_printk, \ |
3168 | fs_info, KERN_DEBUG fmt, ##args) | |
3169 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ | |
3170 | _dynamic_func_call_no_desc(fmt, btrfs_printk_in_rcu, \ | |
3171 | fs_info, KERN_DEBUG fmt, ##args) | |
897a41b1 | 3172 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
afe1a715 RV |
3173 | _dynamic_func_call_no_desc(fmt, btrfs_printk_rl_in_rcu, \ |
3174 | fs_info, KERN_DEBUG fmt, ##args) | |
3175 | #define btrfs_debug_rl(fs_info, fmt, args...) \ | |
3176 | _dynamic_func_call_no_desc(fmt, btrfs_printk_ratelimited, \ | |
3177 | fs_info, KERN_DEBUG fmt, ##args) | |
897a41b1 | 3178 | #elif defined(DEBUG) |
c2cf52eb SK |
3179 | #define btrfs_debug(fs_info, fmt, args...) \ |
3180 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3181 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3182 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3183 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3184 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3185 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3186 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3187 | #else |
3188 | #define btrfs_debug(fs_info, fmt, args...) \ | |
c01f5f96 | 3189 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
08a84e25 | 3190 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
b6fdfbff | 3191 | btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
24aa6b41 | 3192 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
b6fdfbff | 3193 | btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
1dd6d7ca | 3194 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
c01f5f96 | 3195 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
27a0dd61 | 3196 | #endif |
c2cf52eb | 3197 | |
08a84e25 DS |
3198 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3199 | do { \ | |
3200 | rcu_read_lock(); \ | |
3201 | btrfs_printk(fs_info, fmt, ##args); \ | |
b6fdfbff MT |
3202 | rcu_read_unlock(); \ |
3203 | } while (0) | |
3204 | ||
3205 | #define btrfs_no_printk_in_rcu(fs_info, fmt, args...) \ | |
3206 | do { \ | |
3207 | rcu_read_lock(); \ | |
3208 | btrfs_no_printk(fs_info, fmt, ##args); \ | |
08a84e25 DS |
3209 | rcu_read_unlock(); \ |
3210 | } while (0) | |
3211 | ||
24aa6b41 DS |
3212 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3213 | do { \ | |
3214 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3215 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3216 | DEFAULT_RATELIMIT_BURST); \ | |
3217 | if (__ratelimit(&_rs)) \ | |
3218 | btrfs_printk(fs_info, fmt, ##args); \ | |
3219 | } while (0) | |
3220 | ||
3221 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3222 | do { \ | |
3223 | rcu_read_lock(); \ | |
3224 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3225 | rcu_read_unlock(); \ | |
3226 | } while (0) | |
3227 | ||
68c467cb DS |
3228 | #ifdef CONFIG_BTRFS_ASSERT |
3229 | __cold __noreturn | |
3230 | static inline void assertfail(const char *expr, const char *file, int line) | |
2e17c7c6 | 3231 | { |
68c467cb DS |
3232 | pr_err("assertion failed: %s, in %s:%d\n", expr, file, line); |
3233 | BUG(); | |
2e17c7c6 JB |
3234 | } |
3235 | ||
68c467cb DS |
3236 | #define ASSERT(expr) \ |
3237 | (likely(expr) ? (void)0 : assertfail(#expr, __FILE__, __LINE__)) | |
3238 | ||
3239 | #else | |
3240 | static inline void assertfail(const char *expr, const char* file, int line) { } | |
3241 | #define ASSERT(expr) (void)(expr) | |
3242 | #endif | |
2e17c7c6 | 3243 | |
f8f591df JT |
3244 | /* |
3245 | * Use that for functions that are conditionally exported for sanity tests but | |
3246 | * otherwise static | |
3247 | */ | |
3248 | #ifndef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3249 | #define EXPORT_FOR_TESTS static | |
3250 | #else | |
3251 | #define EXPORT_FOR_TESTS | |
3252 | #endif | |
3253 | ||
ba3c2b19 NB |
3254 | __cold |
3255 | static inline void btrfs_print_v0_err(struct btrfs_fs_info *fs_info) | |
3256 | { | |
3257 | btrfs_err(fs_info, | |
3258 | "Unsupported V0 extent filesystem detected. Aborting. Please re-create your filesystem with a newer kernel"); | |
3259 | } | |
3260 | ||
533574c6 | 3261 | __printf(5, 6) |
c0d19e2b | 3262 | __cold |
34d97007 | 3263 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3264 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3265 | |
4143cb8b | 3266 | const char * __attribute_const__ btrfs_decode_error(int errno); |
533574c6 | 3267 | |
c0d19e2b | 3268 | __cold |
49b25e05 | 3269 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
66642832 | 3270 | const char *function, |
49b25e05 JM |
3271 | unsigned int line, int errno); |
3272 | ||
c5f4ccb2 AJ |
3273 | /* |
3274 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3275 | * detected, that way the exact line number is reported. | |
3276 | */ | |
66642832 | 3277 | #define btrfs_abort_transaction(trans, errno) \ |
c5f4ccb2 AJ |
3278 | do { \ |
3279 | /* Report first abort since mount */ \ | |
3280 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
66642832 | 3281 | &((trans)->fs_info->fs_state))) { \ |
f95ebdbe | 3282 | if ((errno) != -EIO && (errno) != -EROFS) { \ |
e5d6b12f CM |
3283 | WARN(1, KERN_DEBUG \ |
3284 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3285 | (errno)); \ | |
3286 | } else { \ | |
71367b3f JM |
3287 | btrfs_debug((trans)->fs_info, \ |
3288 | "Transaction aborted (error %d)", \ | |
e5d6b12f CM |
3289 | (errno)); \ |
3290 | } \ | |
c5f4ccb2 | 3291 | } \ |
66642832 | 3292 | __btrfs_abort_transaction((trans), __func__, \ |
c5f4ccb2 AJ |
3293 | __LINE__, (errno)); \ |
3294 | } while (0) | |
3295 | ||
3296 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3297 | do { \ | |
3298 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3299 | (errno), fmt, ##args); \ | |
3300 | } while (0) | |
3301 | ||
3302 | __printf(5, 6) | |
3303 | __cold | |
3304 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3305 | unsigned int line, int errno, const char *fmt, ...); | |
3306 | /* | |
3307 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3308 | * will panic(). Otherwise we BUG() here. | |
3309 | */ | |
3310 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3311 | do { \ | |
3312 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3313 | BUG(); \ | |
3314 | } while (0) | |
3315 | ||
3316 | ||
3317 | /* compatibility and incompatibility defines */ | |
3318 | ||
2b0ce2c2 | 3319 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
c9d713d5 DS |
3320 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt, \ |
3321 | #opt) | |
2b0ce2c2 MH |
3322 | |
3323 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
c9d713d5 | 3324 | u64 flag, const char* name) |
2b0ce2c2 MH |
3325 | { |
3326 | struct btrfs_super_block *disk_super; | |
3327 | u64 features; | |
3328 | ||
3329 | disk_super = fs_info->super_copy; | |
3330 | features = btrfs_super_incompat_flags(disk_super); | |
3331 | if (!(features & flag)) { | |
ceda0864 MX |
3332 | spin_lock(&fs_info->super_lock); |
3333 | features = btrfs_super_incompat_flags(disk_super); | |
3334 | if (!(features & flag)) { | |
3335 | features |= flag; | |
3336 | btrfs_set_super_incompat_flags(disk_super, features); | |
c9d713d5 DS |
3337 | btrfs_info(fs_info, |
3338 | "setting incompat feature flag for %s (0x%llx)", | |
3339 | name, flag); | |
ceda0864 MX |
3340 | } |
3341 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3342 | } |
3343 | } | |
3344 | ||
1abfbcdf | 3345 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
c9d713d5 DS |
3346 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt, \ |
3347 | #opt) | |
1abfbcdf OS |
3348 | |
3349 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
c9d713d5 | 3350 | u64 flag, const char* name) |
1abfbcdf OS |
3351 | { |
3352 | struct btrfs_super_block *disk_super; | |
3353 | u64 features; | |
3354 | ||
3355 | disk_super = fs_info->super_copy; | |
3356 | features = btrfs_super_incompat_flags(disk_super); | |
3357 | if (features & flag) { | |
3358 | spin_lock(&fs_info->super_lock); | |
3359 | features = btrfs_super_incompat_flags(disk_super); | |
3360 | if (features & flag) { | |
3361 | features &= ~flag; | |
3362 | btrfs_set_super_incompat_flags(disk_super, features); | |
c9d713d5 DS |
3363 | btrfs_info(fs_info, |
3364 | "clearing incompat feature flag for %s (0x%llx)", | |
3365 | name, flag); | |
1abfbcdf OS |
3366 | } |
3367 | spin_unlock(&fs_info->super_lock); | |
3368 | } | |
3369 | } | |
3370 | ||
3173a18f JB |
3371 | #define btrfs_fs_incompat(fs_info, opt) \ |
3372 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3373 | ||
9780c497 | 3374 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3375 | { |
3376 | struct btrfs_super_block *disk_super; | |
3377 | disk_super = fs_info->super_copy; | |
3378 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3379 | } | |
3380 | ||
1abfbcdf | 3381 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
c9d713d5 DS |
3382 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt, \ |
3383 | #opt) | |
1abfbcdf OS |
3384 | |
3385 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
c9d713d5 | 3386 | u64 flag, const char *name) |
1abfbcdf OS |
3387 | { |
3388 | struct btrfs_super_block *disk_super; | |
3389 | u64 features; | |
3390 | ||
3391 | disk_super = fs_info->super_copy; | |
3392 | features = btrfs_super_compat_ro_flags(disk_super); | |
3393 | if (!(features & flag)) { | |
3394 | spin_lock(&fs_info->super_lock); | |
3395 | features = btrfs_super_compat_ro_flags(disk_super); | |
3396 | if (!(features & flag)) { | |
3397 | features |= flag; | |
3398 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
c9d713d5 DS |
3399 | btrfs_info(fs_info, |
3400 | "setting compat-ro feature flag for %s (0x%llx)", | |
3401 | name, flag); | |
1abfbcdf OS |
3402 | } |
3403 | spin_unlock(&fs_info->super_lock); | |
3404 | } | |
3405 | } | |
3406 | ||
3407 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
c9d713d5 DS |
3408 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt, \ |
3409 | #opt) | |
1abfbcdf OS |
3410 | |
3411 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
c9d713d5 | 3412 | u64 flag, const char *name) |
1abfbcdf OS |
3413 | { |
3414 | struct btrfs_super_block *disk_super; | |
3415 | u64 features; | |
3416 | ||
3417 | disk_super = fs_info->super_copy; | |
3418 | features = btrfs_super_compat_ro_flags(disk_super); | |
3419 | if (features & flag) { | |
3420 | spin_lock(&fs_info->super_lock); | |
3421 | features = btrfs_super_compat_ro_flags(disk_super); | |
3422 | if (features & flag) { | |
3423 | features &= ~flag; | |
3424 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
c9d713d5 DS |
3425 | btrfs_info(fs_info, |
3426 | "clearing compat-ro feature flag for %s (0x%llx)", | |
3427 | name, flag); | |
1abfbcdf OS |
3428 | } |
3429 | spin_unlock(&fs_info->super_lock); | |
3430 | } | |
3431 | } | |
3432 | ||
3433 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3434 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3435 | ||
3436 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3437 | { | |
3438 | struct btrfs_super_block *disk_super; | |
3439 | disk_super = fs_info->super_copy; | |
3440 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3441 | } | |
3442 | ||
33268eaf | 3443 | /* acl.c */ |
0eda294d | 3444 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3445 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3446 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3447 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3448 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3449 | #else |
ed8f3737 | 3450 | #define btrfs_get_acl NULL |
996a710d | 3451 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3452 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3453 | struct inode *inode, struct inode *dir) | |
3454 | { | |
3455 | return 0; | |
3456 | } | |
9b89d95a | 3457 | #endif |
0f9dd46c | 3458 | |
5d4f98a2 | 3459 | /* relocation.c */ |
6bccf3ab | 3460 | int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start); |
5d4f98a2 YZ |
3461 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
3462 | struct btrfs_root *root); | |
3463 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3464 | struct btrfs_root *root); | |
3465 | int btrfs_recover_relocation(struct btrfs_root *root); | |
7bfa9535 | 3466 | int btrfs_reloc_clone_csums(struct btrfs_inode *inode, u64 file_pos, u64 len); |
83d4cfd4 JB |
3467 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3468 | struct btrfs_root *root, struct extent_buffer *buf, | |
3469 | struct extent_buffer *cow); | |
147d256e | 3470 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 3471 | u64 *bytes_to_reserve); |
49b25e05 | 3472 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3473 | struct btrfs_pending_snapshot *pending); |
726a3421 | 3474 | int btrfs_should_cancel_balance(struct btrfs_fs_info *fs_info); |
2433bea5 QW |
3475 | struct btrfs_root *find_reloc_root(struct btrfs_fs_info *fs_info, |
3476 | u64 bytenr); | |
55465730 | 3477 | int btrfs_should_ignore_reloc_root(struct btrfs_root *root); |
a2de733c AJ |
3478 | |
3479 | /* scrub.c */ | |
aa1b8cd4 SB |
3480 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3481 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3482 | int readonly, int is_dev_replace); |
2ff7e61e JM |
3483 | void btrfs_scrub_pause(struct btrfs_fs_info *fs_info); |
3484 | void btrfs_scrub_continue(struct btrfs_fs_info *fs_info); | |
aa1b8cd4 | 3485 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
163e97ee | 3486 | int btrfs_scrub_cancel_dev(struct btrfs_device *dev); |
2ff7e61e | 3487 | int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid, |
a2de733c | 3488 | struct btrfs_scrub_progress *progress); |
0966a7b1 QW |
3489 | static inline void btrfs_init_full_stripe_locks_tree( |
3490 | struct btrfs_full_stripe_locks_tree *locks_root) | |
3491 | { | |
3492 | locks_root->root = RB_ROOT; | |
3493 | mutex_init(&locks_root->lock); | |
3494 | } | |
c404e0dc MX |
3495 | |
3496 | /* dev-replace.c */ | |
3497 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
3498 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
3499 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
3500 | ||
3501 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
3502 | { | |
3503 | btrfs_bio_counter_sub(fs_info, 1); | |
3504 | } | |
a2de733c | 3505 | |
7414a03f AJ |
3506 | /* reada.c */ |
3507 | struct reada_control { | |
c28f158e | 3508 | struct btrfs_fs_info *fs_info; /* tree to prefetch */ |
7414a03f AJ |
3509 | struct btrfs_key key_start; |
3510 | struct btrfs_key key_end; /* exclusive */ | |
3511 | atomic_t elems; | |
3512 | struct kref refcnt; | |
3513 | wait_queue_head_t wait; | |
3514 | }; | |
3515 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3516 | struct btrfs_key *start, struct btrfs_key *end); | |
3517 | int btrfs_reada_wait(void *handle); | |
3518 | void btrfs_reada_detach(void *handle); | |
d48d71aa | 3519 | int btree_readahead_hook(struct extent_buffer *eb, int err); |
7414a03f | 3520 | |
95a06077 JS |
3521 | static inline int is_fstree(u64 rootid) |
3522 | { | |
3523 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
3524 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
3525 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
3526 | return 1; |
3527 | return 0; | |
3528 | } | |
210549eb DS |
3529 | |
3530 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3531 | { | |
3532 | return signal_pending(current); | |
3533 | } | |
3534 | ||
e74e3993 NB |
3535 | #define in_range(b, first, len) ((b) >= (first) && (b) < (first) + (len)) |
3536 | ||
aaedb55b JB |
3537 | /* Sanity test specific functions */ |
3538 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
a654666a | 3539 | void btrfs_test_inode_set_ops(struct inode *inode); |
aaedb55b | 3540 | void btrfs_test_destroy_inode(struct inode *inode); |
210549eb | 3541 | |
f5ee5c9a | 3542 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
fccb84c9 | 3543 | { |
b2fa1154 DS |
3544 | return test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state); |
3545 | } | |
3546 | #else | |
3547 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) | |
3548 | { | |
fccb84c9 DS |
3549 | return 0; |
3550 | } | |
b2fa1154 | 3551 | #endif |
9888c340 | 3552 | |
eb60ceac | 3553 | #endif |