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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> |
f8b18087 | 19 | #include <linux/kobject.h> |
1abe9b8a | 20 | #include <trace/events/btrfs.h> |
479965d6 | 21 | #include <asm/kmap_types.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> |
d1310b2e | 31 | #include "extent_io.h" |
5f39d397 | 32 | #include "extent_map.h" |
8b712842 | 33 | #include "async-thread.h" |
e20d96d6 | 34 | |
e089f05c | 35 | struct btrfs_trans_handle; |
79154b1b | 36 | struct btrfs_transaction; |
a22285a6 | 37 | struct btrfs_pending_snapshot; |
35b7e476 | 38 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
35b7e476 | 39 | extern struct kmem_cache *btrfs_bit_radix_cachep; |
2c90e5d6 | 40 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 41 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 42 | struct btrfs_ordered_sum; |
e089f05c | 43 | |
cdb4c574 | 44 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 45 | |
72d7aefc | 46 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 47 | |
4008c04a | 48 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 49 | |
7c829b72 AJ |
50 | #define BTRFS_OLDEST_GENERATION 0ULL |
51 | ||
727011e0 CM |
52 | /* |
53 | * the max metadata block size. This limit is somewhat artificial, | |
54 | * but the memmove costs go through the roof for larger blocks. | |
55 | */ | |
56 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
57 | ||
e20d96d6 CM |
58 | /* |
59 | * we can actually store much bigger names, but lets not confuse the rest | |
60 | * of linux | |
61 | */ | |
62 | #define BTRFS_NAME_LEN 255 | |
63 | ||
f186373f MF |
64 | /* |
65 | * Theoretical limit is larger, but we keep this down to a sane | |
66 | * value. That should limit greatly the possibility of collisions on | |
67 | * inode ref items. | |
68 | */ | |
69 | #define BTRFS_LINK_MAX 65535U | |
70 | ||
4408ea7c | 71 | /* four bytes for CRC32 */ |
4d4ab6d6 | 72 | static const int btrfs_csum_sizes[] = { 4 }; |
607d432d | 73 | |
3954401f | 74 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 75 | |
3d136a11 SB |
76 | /* ioprio of readahead is set to idle */ |
77 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
78 | ||
ee22184b | 79 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M |
e2d84521 | 80 | |
dec59fa3 EL |
81 | /* |
82 | * Use large batch size to reduce overhead of metadata updates. On the reader | |
83 | * side, we only read it when we are close to ENOSPC and the read overhead is | |
84 | * mostly related to the number of CPUs, so it is OK to use arbitrary large | |
85 | * value here. | |
86 | */ | |
87 | #define BTRFS_TOTAL_BYTES_PINNED_BATCH SZ_128M | |
88 | ||
ee22184b | 89 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M |
dcab6a3b | 90 | |
9678c543 | 91 | |
823bb20a DS |
92 | /* |
93 | * Count how many BTRFS_MAX_EXTENT_SIZE cover the @size | |
94 | */ | |
95 | static inline u32 count_max_extents(u64 size) | |
96 | { | |
97 | return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE); | |
98 | } | |
99 | ||
0b86a832 CM |
100 | struct btrfs_mapping_tree { |
101 | struct extent_map_tree map_tree; | |
102 | }; | |
103 | ||
0b86a832 CM |
104 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
105 | { | |
106 | BUG_ON(num_stripes == 0); | |
107 | return sizeof(struct btrfs_chunk) + | |
108 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
109 | } | |
110 | ||
acce952b | 111 | /* |
b00146b5 | 112 | * Runtime (in-memory) states of filesystem |
acce952b | 113 | */ |
b00146b5 DS |
114 | enum { |
115 | /* Global indicator of serious filesystem errors */ | |
116 | BTRFS_FS_STATE_ERROR, | |
117 | /* | |
118 | * Filesystem is being remounted, allow to skip some operations, like | |
119 | * defrag | |
120 | */ | |
121 | BTRFS_FS_STATE_REMOUNTING, | |
122 | /* Track if a transaction abort has been reported on this filesystem */ | |
123 | BTRFS_FS_STATE_TRANS_ABORTED, | |
124 | /* | |
125 | * Bio operations should be blocked on this filesystem because a source | |
126 | * or target device is being destroyed as part of a device replace | |
127 | */ | |
128 | BTRFS_FS_STATE_DEV_REPLACING, | |
129 | /* The btrfs_fs_info created for self-tests */ | |
130 | BTRFS_FS_STATE_DUMMY_FS_INFO, | |
131 | }; | |
acce952b | 132 | |
5d4f98a2 YZ |
133 | #define BTRFS_BACKREF_REV_MAX 256 |
134 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
135 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
136 | BTRFS_BACKREF_REV_SHIFT) | |
137 | ||
138 | #define BTRFS_OLD_BACKREF_REV 0 | |
139 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 140 | |
fec577fb CM |
141 | /* |
142 | * every tree block (leaf or node) starts with this header. | |
143 | */ | |
bb492bb0 | 144 | struct btrfs_header { |
e17cade2 | 145 | /* these first four must match the super block */ |
f254e52c | 146 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 147 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 148 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 149 | __le64 flags; |
e17cade2 CM |
150 | |
151 | /* allowed to be different from the super from here on down */ | |
152 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 153 | __le64 generation; |
4d775673 | 154 | __le64 owner; |
5f39d397 | 155 | __le32 nritems; |
9a6f11ed | 156 | u8 level; |
eb60ceac CM |
157 | } __attribute__ ((__packed__)); |
158 | ||
0b86a832 CM |
159 | /* |
160 | * this is a very generous portion of the super block, giving us | |
161 | * room to translate 14 chunks with 3 stripes each. | |
162 | */ | |
163 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
164 | ||
af31f5e5 CM |
165 | /* |
166 | * just in case we somehow lose the roots and are not able to mount, | |
167 | * we store an array of the roots from previous transactions | |
168 | * in the super. | |
169 | */ | |
170 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
171 | struct btrfs_root_backup { | |
172 | __le64 tree_root; | |
173 | __le64 tree_root_gen; | |
174 | ||
175 | __le64 chunk_root; | |
176 | __le64 chunk_root_gen; | |
177 | ||
178 | __le64 extent_root; | |
179 | __le64 extent_root_gen; | |
180 | ||
181 | __le64 fs_root; | |
182 | __le64 fs_root_gen; | |
183 | ||
184 | __le64 dev_root; | |
185 | __le64 dev_root_gen; | |
186 | ||
187 | __le64 csum_root; | |
188 | __le64 csum_root_gen; | |
189 | ||
190 | __le64 total_bytes; | |
191 | __le64 bytes_used; | |
192 | __le64 num_devices; | |
193 | /* future */ | |
d1423248 | 194 | __le64 unused_64[4]; |
af31f5e5 CM |
195 | |
196 | u8 tree_root_level; | |
197 | u8 chunk_root_level; | |
198 | u8 extent_root_level; | |
199 | u8 fs_root_level; | |
200 | u8 dev_root_level; | |
201 | u8 csum_root_level; | |
202 | /* future and to align */ | |
203 | u8 unused_8[10]; | |
204 | } __attribute__ ((__packed__)); | |
205 | ||
fec577fb CM |
206 | /* |
207 | * the super block basically lists the main trees of the FS | |
208 | * it currently lacks any block count etc etc | |
209 | */ | |
234b63a0 | 210 | struct btrfs_super_block { |
63b10fc4 | 211 | /* the first 4 fields must match struct btrfs_header */ |
7239ff4b NB |
212 | u8 csum[BTRFS_CSUM_SIZE]; |
213 | /* FS specific UUID, visible to user */ | |
214 | u8 fsid[BTRFS_FSID_SIZE]; | |
db94535d | 215 | __le64 bytenr; /* this block number */ |
63b10fc4 | 216 | __le64 flags; |
e17cade2 CM |
217 | |
218 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 219 | __le64 magic; |
3768f368 CM |
220 | __le64 generation; |
221 | __le64 root; | |
0b86a832 | 222 | __le64 chunk_root; |
e02119d5 | 223 | __le64 log_root; |
c3027eb5 CM |
224 | |
225 | /* this will help find the new super based on the log root */ | |
226 | __le64 log_root_transid; | |
db94535d CM |
227 | __le64 total_bytes; |
228 | __le64 bytes_used; | |
2e635a27 | 229 | __le64 root_dir_objectid; |
8a4b83cc | 230 | __le64 num_devices; |
5f39d397 CM |
231 | __le32 sectorsize; |
232 | __le32 nodesize; | |
707e8a07 | 233 | __le32 __unused_leafsize; |
87ee04eb | 234 | __le32 stripesize; |
0b86a832 | 235 | __le32 sys_chunk_array_size; |
84234f3a | 236 | __le64 chunk_root_generation; |
f2b636e8 JB |
237 | __le64 compat_flags; |
238 | __le64 compat_ro_flags; | |
239 | __le64 incompat_flags; | |
607d432d | 240 | __le16 csum_type; |
db94535d | 241 | u8 root_level; |
0b86a832 | 242 | u8 chunk_root_level; |
e02119d5 | 243 | u8 log_root_level; |
0d81ba5d | 244 | struct btrfs_dev_item dev_item; |
c3027eb5 | 245 | |
7ae9c09d | 246 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 247 | |
0af3d00b | 248 | __le64 cache_generation; |
26432799 | 249 | __le64 uuid_tree_generation; |
0af3d00b | 250 | |
7239ff4b NB |
251 | /* the UUID written into btree blocks */ |
252 | u8 metadata_uuid[BTRFS_FSID_SIZE]; | |
253 | ||
c3027eb5 | 254 | /* future expansion */ |
7239ff4b | 255 | __le64 reserved[28]; |
0b86a832 | 256 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 257 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
258 | } __attribute__ ((__packed__)); |
259 | ||
f2b636e8 JB |
260 | /* |
261 | * Compat flags that we support. If any incompat flags are set other than the | |
262 | * ones specified below then we will fail to mount | |
263 | */ | |
5d4f98a2 | 264 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
265 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
266 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
70f6d82e OS |
267 | |
268 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ | |
6675df31 OS |
269 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \ |
270 | BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID) | |
70f6d82e | 271 | |
2eaa055f JM |
272 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
273 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
274 | ||
0af3d00b JB |
275 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
276 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 277 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 278 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 279 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 280 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
5c1aab1d | 281 | BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD | \ |
53b381b3 | 282 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 283 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f | 284 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
7239ff4b NB |
285 | BTRFS_FEATURE_INCOMPAT_NO_HOLES | \ |
286 | BTRFS_FEATURE_INCOMPAT_METADATA_UUID) | |
f2b636e8 | 287 | |
2eaa055f JM |
288 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
289 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
290 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 291 | |
fec577fb | 292 | /* |
62e2749e | 293 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
294 | * the item in the leaf (relative to the start of the data area) |
295 | */ | |
0783fcfc | 296 | struct btrfs_item { |
e2fa7227 | 297 | struct btrfs_disk_key key; |
123abc88 | 298 | __le32 offset; |
5f39d397 | 299 | __le32 size; |
eb60ceac CM |
300 | } __attribute__ ((__packed__)); |
301 | ||
fec577fb CM |
302 | /* |
303 | * leaves have an item area and a data area: | |
304 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
305 | * | |
306 | * The data is separate from the items to get the keys closer together | |
307 | * during searches. | |
308 | */ | |
234b63a0 | 309 | struct btrfs_leaf { |
bb492bb0 | 310 | struct btrfs_header header; |
123abc88 | 311 | struct btrfs_item items[]; |
eb60ceac CM |
312 | } __attribute__ ((__packed__)); |
313 | ||
fec577fb CM |
314 | /* |
315 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
316 | * other blocks | |
317 | */ | |
123abc88 CM |
318 | struct btrfs_key_ptr { |
319 | struct btrfs_disk_key key; | |
320 | __le64 blockptr; | |
74493f7a | 321 | __le64 generation; |
123abc88 CM |
322 | } __attribute__ ((__packed__)); |
323 | ||
234b63a0 | 324 | struct btrfs_node { |
bb492bb0 | 325 | struct btrfs_header header; |
123abc88 | 326 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
327 | } __attribute__ ((__packed__)); |
328 | ||
fec577fb | 329 | /* |
234b63a0 CM |
330 | * btrfs_paths remember the path taken from the root down to the leaf. |
331 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
332 | * to any other levels that are present. |
333 | * | |
334 | * The slots array records the index of the item or block pointer | |
335 | * used while walking the tree. | |
336 | */ | |
e4058b54 | 337 | enum { READA_NONE = 0, READA_BACK, READA_FORWARD }; |
234b63a0 | 338 | struct btrfs_path { |
5f39d397 | 339 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 340 | int slots[BTRFS_MAX_LEVEL]; |
925baedd | 341 | /* if there is real range locking, this locks field will change */ |
4fb72bf2 | 342 | u8 locks[BTRFS_MAX_LEVEL]; |
dccabfad | 343 | u8 reada; |
925baedd | 344 | /* keep some upper locks as we walk down */ |
7853f15b | 345 | u8 lowest_level; |
459931ec CM |
346 | |
347 | /* | |
348 | * set by btrfs_split_item, tells search_slot to keep all locks | |
349 | * and to force calls to keep space in the nodes | |
350 | */ | |
b9473439 CM |
351 | unsigned int search_for_split:1; |
352 | unsigned int keep_locks:1; | |
353 | unsigned int skip_locking:1; | |
354 | unsigned int leave_spinning:1; | |
5d4f98a2 | 355 | unsigned int search_commit_root:1; |
3f8a18cc | 356 | unsigned int need_commit_sem:1; |
5f5bc6b1 | 357 | unsigned int skip_release_on_error:1; |
eb60ceac | 358 | }; |
da17066c | 359 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \ |
5d4f98a2 | 360 | sizeof(struct btrfs_item)) |
e922e087 SB |
361 | struct btrfs_dev_replace { |
362 | u64 replace_state; /* see #define above */ | |
a944442c AP |
363 | time64_t time_started; /* seconds since 1-Jan-1970 */ |
364 | time64_t time_stopped; /* seconds since 1-Jan-1970 */ | |
e922e087 SB |
365 | atomic64_t num_write_errors; |
366 | atomic64_t num_uncorrectable_read_errors; | |
367 | ||
368 | u64 cursor_left; | |
369 | u64 committed_cursor_left; | |
370 | u64 cursor_left_last_write_of_item; | |
371 | u64 cursor_right; | |
372 | ||
373 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
374 | ||
375 | int is_valid; | |
376 | int item_needs_writeback; | |
377 | struct btrfs_device *srcdev; | |
378 | struct btrfs_device *tgtdev; | |
379 | ||
e922e087 | 380 | struct mutex lock_finishing_cancel_unmount; |
73beece9 | 381 | rwlock_t lock; |
73beece9 LB |
382 | atomic_t blocking_readers; |
383 | wait_queue_head_t read_lock_wq; | |
e922e087 SB |
384 | |
385 | struct btrfs_scrub_progress scrub_progress; | |
7f8d236a DS |
386 | |
387 | struct percpu_counter bio_counter; | |
388 | wait_queue_head_t replace_wait; | |
e922e087 SB |
389 | }; |
390 | ||
c1895442 JM |
391 | /* For raid type sysfs entries */ |
392 | struct raid_kobject { | |
75cb379d | 393 | u64 flags; |
c1895442 | 394 | struct kobject kobj; |
75cb379d | 395 | struct list_head list; |
c1895442 JM |
396 | }; |
397 | ||
6324fbf3 | 398 | struct btrfs_space_info { |
26b47ff6 | 399 | spinlock_t lock; |
6a63209f | 400 | |
89a55897 JB |
401 | u64 total_bytes; /* total bytes in the space, |
402 | this doesn't take mirrors into account */ | |
b742bb82 | 403 | u64 bytes_used; /* total bytes used, |
e9c54999 | 404 | this doesn't take mirrors into account */ |
6a63209f JB |
405 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
406 | transaction finishes */ | |
407 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
408 | current allocations */ | |
6a63209f | 409 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 410 | delalloc/allocations */ |
26b47ff6 MX |
411 | u64 bytes_readonly; /* total bytes that are read only */ |
412 | ||
4f4db217 JB |
413 | u64 max_extent_size; /* This will hold the maximum extent size of |
414 | the space info if we had an ENOSPC in the | |
415 | allocator. */ | |
416 | ||
26b47ff6 MX |
417 | unsigned int full:1; /* indicates that we cannot allocate any more |
418 | chunks for this space */ | |
419 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
420 | ||
421 | unsigned int flush:1; /* set if we are trying to make space */ | |
422 | ||
423 | unsigned int force_alloc; /* set if we need to force a chunk | |
424 | alloc for this space */ | |
425 | ||
b742bb82 | 426 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
427 | u64 disk_total; /* total bytes on disk, takes mirrors into |
428 | account */ | |
6a63209f | 429 | |
26b47ff6 MX |
430 | u64 flags; |
431 | ||
b150a4f1 JB |
432 | /* |
433 | * bytes_pinned is kept in line with what is actually pinned, as in | |
434 | * we've called update_block_group and dropped the bytes_used counter | |
435 | * and increased the bytes_pinned counter. However this means that | |
436 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
bb7ab3b9 AB |
437 | * delayed refs are flushed, so this counter is inc'ed every time we |
438 | * call btrfs_free_extent so it is a realtime count of what will be | |
01327610 | 439 | * freed once the transaction is committed. It will be zeroed every |
bb7ab3b9 | 440 | * time the transaction commits. |
b150a4f1 JB |
441 | */ |
442 | struct percpu_counter total_bytes_pinned; | |
443 | ||
6324fbf3 | 444 | struct list_head list; |
75c68e9f | 445 | /* Protected by the spinlock 'lock'. */ |
633c0aad | 446 | struct list_head ro_bgs; |
957780eb JB |
447 | struct list_head priority_tickets; |
448 | struct list_head tickets; | |
939659df WX |
449 | /* |
450 | * tickets_id just indicates the next ticket will be handled, so note | |
451 | * it's not stored per ticket. | |
452 | */ | |
ce129655 | 453 | u64 tickets_id; |
0f9dd46c | 454 | |
26b47ff6 | 455 | struct rw_semaphore groups_sem; |
0f9dd46c | 456 | /* for block groups in our same type */ |
b742bb82 | 457 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 458 | wait_queue_head_t wait; |
6ab0a202 JM |
459 | |
460 | struct kobject kobj; | |
c1895442 | 461 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
0f9dd46c JB |
462 | }; |
463 | ||
688a75b9 DS |
464 | /* |
465 | * Types of block reserves | |
466 | */ | |
467 | enum { | |
468 | BTRFS_BLOCK_RSV_GLOBAL, | |
469 | BTRFS_BLOCK_RSV_DELALLOC, | |
470 | BTRFS_BLOCK_RSV_TRANS, | |
471 | BTRFS_BLOCK_RSV_CHUNK, | |
472 | BTRFS_BLOCK_RSV_DELOPS, | |
473 | BTRFS_BLOCK_RSV_EMPTY, | |
474 | BTRFS_BLOCK_RSV_TEMP, | |
475 | }; | |
66d8f3dd | 476 | |
f0486c68 YZ |
477 | struct btrfs_block_rsv { |
478 | u64 size; | |
479 | u64 reserved; | |
f0486c68 | 480 | struct btrfs_space_info *space_info; |
f0486c68 | 481 | spinlock_t lock; |
66d8f3dd MX |
482 | unsigned short full; |
483 | unsigned short type; | |
484 | unsigned short failfast; | |
ff6bc37e QW |
485 | |
486 | /* | |
487 | * Qgroup equivalent for @size @reserved | |
488 | * | |
489 | * Unlike normal @size/@reserved for inode rsv, qgroup doesn't care | |
490 | * about things like csum size nor how many tree blocks it will need to | |
491 | * reserve. | |
492 | * | |
493 | * Qgroup cares more about net change of the extent usage. | |
494 | * | |
495 | * So for one newly inserted file extent, in worst case it will cause | |
496 | * leaf split and level increase, nodesize for each file extent is | |
497 | * already too much. | |
498 | * | |
499 | * In short, qgroup_size/reserved is the upper limit of possible needed | |
500 | * qgroup metadata reservation. | |
501 | */ | |
502 | u64 qgroup_rsv_size; | |
503 | u64 qgroup_rsv_reserved; | |
f0486c68 YZ |
504 | }; |
505 | ||
fa9c0d79 CM |
506 | /* |
507 | * free clusters are used to claim free space in relatively large chunks, | |
583b7231 HK |
508 | * allowing us to do less seeky writes. They are used for all metadata |
509 | * allocations. In ssd_spread mode they are also used for data allocations. | |
fa9c0d79 CM |
510 | */ |
511 | struct btrfs_free_cluster { | |
512 | spinlock_t lock; | |
513 | spinlock_t refill_lock; | |
514 | struct rb_root root; | |
515 | ||
516 | /* largest extent in this cluster */ | |
517 | u64 max_size; | |
518 | ||
519 | /* first extent starting offset */ | |
520 | u64 window_start; | |
521 | ||
c759c4e1 JB |
522 | /* We did a full search and couldn't create a cluster */ |
523 | bool fragmented; | |
524 | ||
fa9c0d79 CM |
525 | struct btrfs_block_group_cache *block_group; |
526 | /* | |
527 | * when a cluster is allocated from a block group, we put the | |
528 | * cluster onto a list in the block group so that it can | |
529 | * be freed before the block group is freed. | |
530 | */ | |
531 | struct list_head block_group_list; | |
6324fbf3 CM |
532 | }; |
533 | ||
817d52f8 JB |
534 | enum btrfs_caching_type { |
535 | BTRFS_CACHE_NO = 0, | |
536 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
537 | BTRFS_CACHE_FAST = 2, |
538 | BTRFS_CACHE_FINISHED = 3, | |
36cce922 | 539 | BTRFS_CACHE_ERROR = 4, |
817d52f8 JB |
540 | }; |
541 | ||
0af3d00b JB |
542 | enum btrfs_disk_cache_state { |
543 | BTRFS_DC_WRITTEN = 0, | |
544 | BTRFS_DC_ERROR = 1, | |
545 | BTRFS_DC_CLEAR = 2, | |
546 | BTRFS_DC_SETUP = 3, | |
0af3d00b JB |
547 | }; |
548 | ||
11833d66 YZ |
549 | struct btrfs_caching_control { |
550 | struct list_head list; | |
551 | struct mutex mutex; | |
552 | wait_queue_head_t wait; | |
bab39bf9 | 553 | struct btrfs_work work; |
11833d66 YZ |
554 | struct btrfs_block_group_cache *block_group; |
555 | u64 progress; | |
1e4f4714 | 556 | refcount_t count; |
11833d66 YZ |
557 | }; |
558 | ||
73fa48b6 | 559 | /* Once caching_thread() finds this much free space, it will wake up waiters. */ |
d4417e22 | 560 | #define CACHING_CTL_WAKE_UP SZ_2M |
73fa48b6 | 561 | |
4c6d1d85 CM |
562 | struct btrfs_io_ctl { |
563 | void *cur, *orig; | |
564 | struct page *page; | |
565 | struct page **pages; | |
f15376df | 566 | struct btrfs_fs_info *fs_info; |
c9dc4c65 | 567 | struct inode *inode; |
4c6d1d85 CM |
568 | unsigned long size; |
569 | int index; | |
570 | int num_pages; | |
c9dc4c65 CM |
571 | int entries; |
572 | int bitmaps; | |
4c6d1d85 CM |
573 | unsigned check_crcs:1; |
574 | }; | |
575 | ||
0966a7b1 QW |
576 | /* |
577 | * Tree to record all locked full stripes of a RAID5/6 block group | |
578 | */ | |
579 | struct btrfs_full_stripe_locks_tree { | |
580 | struct rb_root root; | |
581 | struct mutex lock; | |
582 | }; | |
583 | ||
9078a3e1 CM |
584 | struct btrfs_block_group_cache { |
585 | struct btrfs_key key; | |
586 | struct btrfs_block_group_item item; | |
817d52f8 | 587 | struct btrfs_fs_info *fs_info; |
0af3d00b | 588 | struct inode *inode; |
c286ac48 | 589 | spinlock_t lock; |
324ae4df | 590 | u64 pinned; |
e8569813 | 591 | u64 reserved; |
e570fd27 | 592 | u64 delalloc_bytes; |
1b2da372 | 593 | u64 bytes_super; |
0b86a832 | 594 | u64 flags; |
5b0e95bf | 595 | u64 cache_generation; |
a5ed9182 OS |
596 | |
597 | /* | |
598 | * If the free space extent count exceeds this number, convert the block | |
599 | * group to bitmaps. | |
600 | */ | |
601 | u32 bitmap_high_thresh; | |
602 | ||
603 | /* | |
604 | * If the free space extent count drops below this number, convert the | |
605 | * block group back to extents. | |
606 | */ | |
607 | u32 bitmap_low_thresh; | |
53b381b3 | 608 | |
e570fd27 MX |
609 | /* |
610 | * It is just used for the delayed data space allocation because | |
611 | * only the data space allocation and the relative metadata update | |
612 | * can be done cross the transaction. | |
613 | */ | |
614 | struct rw_semaphore data_rwsem; | |
615 | ||
53b381b3 DW |
616 | /* for raid56, this is a full stripe, without parity */ |
617 | unsigned long full_stripe_len; | |
618 | ||
868f401a | 619 | unsigned int ro; |
0410c94a | 620 | unsigned int iref:1; |
4f69cb98 | 621 | unsigned int has_caching_ctl:1; |
04216820 | 622 | unsigned int removed:1; |
0af3d00b JB |
623 | |
624 | int disk_cache_state; | |
0f9dd46c | 625 | |
817d52f8 | 626 | /* cache tracking stuff */ |
817d52f8 | 627 | int cached; |
11833d66 YZ |
628 | struct btrfs_caching_control *caching_ctl; |
629 | u64 last_byte_to_unpin; | |
817d52f8 | 630 | |
0f9dd46c JB |
631 | struct btrfs_space_info *space_info; |
632 | ||
633 | /* free space cache stuff */ | |
34d52cb6 | 634 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
635 | |
636 | /* block group cache stuff */ | |
637 | struct rb_node cache_node; | |
638 | ||
639 | /* for block groups in the same raid type */ | |
640 | struct list_head list; | |
d2fb3437 YZ |
641 | |
642 | /* usage count */ | |
643 | atomic_t count; | |
fa9c0d79 CM |
644 | |
645 | /* List of struct btrfs_free_clusters for this block group. | |
646 | * Today it will only have one thing on it, but that may change | |
647 | */ | |
648 | struct list_head cluster_list; | |
ea658bad | 649 | |
47ab2a6c JB |
650 | /* For delayed block group creation or deletion of empty block groups */ |
651 | struct list_head bg_list; | |
633c0aad JB |
652 | |
653 | /* For read-only block groups */ | |
654 | struct list_head ro_list; | |
04216820 FM |
655 | |
656 | atomic_t trimming; | |
ce93ec54 JB |
657 | |
658 | /* For dirty block groups */ | |
659 | struct list_head dirty_list; | |
c9dc4c65 CM |
660 | struct list_head io_list; |
661 | ||
662 | struct btrfs_io_ctl io_ctl; | |
a5ed9182 | 663 | |
9cfa3e34 FM |
664 | /* |
665 | * Incremented when doing extent allocations and holding a read lock | |
666 | * on the space_info's groups_sem semaphore. | |
667 | * Decremented when an ordered extent that represents an IO against this | |
668 | * block group's range is created (after it's added to its inode's | |
669 | * root's list of ordered extents) or immediately after the allocation | |
670 | * if it's a metadata extent or fallocate extent (for these cases we | |
671 | * don't create ordered extents). | |
672 | */ | |
673 | atomic_t reservations; | |
674 | ||
f78c436c FM |
675 | /* |
676 | * Incremented while holding the spinlock *lock* by a task checking if | |
677 | * it can perform a nocow write (incremented if the value for the *ro* | |
678 | * field is 0). Decremented by such tasks once they create an ordered | |
679 | * extent or before that if some error happens before reaching that step. | |
680 | * This is to prevent races between block group relocation and nocow | |
681 | * writes through direct IO. | |
682 | */ | |
683 | atomic_t nocow_writers; | |
684 | ||
a5ed9182 OS |
685 | /* Lock for free space tree operations. */ |
686 | struct mutex free_space_lock; | |
687 | ||
688 | /* | |
689 | * Does the block group need to be added to the free space tree? | |
690 | * Protected by free_space_lock. | |
691 | */ | |
692 | int needs_free_space; | |
0966a7b1 QW |
693 | |
694 | /* Record locked full stripes for RAID5/6 block group */ | |
695 | struct btrfs_full_stripe_locks_tree full_stripe_locks_root; | |
9078a3e1 | 696 | }; |
0b86a832 | 697 | |
097b8a7c JS |
698 | /* delayed seq elem */ |
699 | struct seq_list { | |
700 | struct list_head list; | |
701 | u64 seq; | |
702 | }; | |
703 | ||
3284da7b DS |
704 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
705 | ||
de47c9d3 EN |
706 | #define SEQ_LAST ((u64)-1) |
707 | ||
5d80366e JB |
708 | enum btrfs_orphan_cleanup_state { |
709 | ORPHAN_CLEANUP_STARTED = 1, | |
710 | ORPHAN_CLEANUP_DONE = 2, | |
711 | }; | |
712 | ||
53b381b3 DW |
713 | /* used by the raid56 code to lock stripes for read/modify/write */ |
714 | struct btrfs_stripe_hash { | |
715 | struct list_head hash_list; | |
53b381b3 DW |
716 | spinlock_t lock; |
717 | }; | |
718 | ||
719 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
720 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
721 | struct list_head stripe_cache; |
722 | spinlock_t cache_lock; | |
723 | int cache_size; | |
724 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
725 | }; |
726 | ||
727 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
728 | ||
21c7e756 MX |
729 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
730 | ||
097b8a7c | 731 | /* fs_info */ |
5d4f98a2 | 732 | struct reloc_control; |
0b86a832 | 733 | struct btrfs_device; |
8a4b83cc | 734 | struct btrfs_fs_devices; |
c9e9f97b | 735 | struct btrfs_balance_control; |
16cdcec7 | 736 | struct btrfs_delayed_root; |
afcdd129 | 737 | |
eede2bf3 OS |
738 | /* |
739 | * Block group or device which contains an active swapfile. Used for preventing | |
740 | * unsafe operations while a swapfile is active. | |
741 | * | |
742 | * These are sorted on (ptr, inode) (note that a block group or device can | |
743 | * contain more than one swapfile). We compare the pointer values because we | |
744 | * don't actually care what the object is, we just need a quick check whether | |
745 | * the object exists in the rbtree. | |
746 | */ | |
747 | struct btrfs_swapfile_pin { | |
748 | struct rb_node node; | |
749 | void *ptr; | |
750 | struct inode *inode; | |
751 | /* | |
752 | * If true, ptr points to a struct btrfs_block_group_cache. Otherwise, | |
753 | * ptr points to a struct btrfs_device. | |
754 | */ | |
755 | bool is_block_group; | |
756 | }; | |
757 | ||
758 | bool btrfs_pinned_by_swapfile(struct btrfs_fs_info *fs_info, void *ptr); | |
759 | ||
eb1a524c DS |
760 | enum { |
761 | BTRFS_FS_BARRIER, | |
762 | BTRFS_FS_CLOSING_START, | |
763 | BTRFS_FS_CLOSING_DONE, | |
764 | BTRFS_FS_LOG_RECOVERING, | |
765 | BTRFS_FS_OPEN, | |
766 | BTRFS_FS_QUOTA_ENABLED, | |
767 | BTRFS_FS_UPDATE_UUID_TREE_GEN, | |
768 | BTRFS_FS_CREATING_FREE_SPACE_TREE, | |
769 | BTRFS_FS_BTREE_ERR, | |
770 | BTRFS_FS_LOG1_ERR, | |
771 | BTRFS_FS_LOG2_ERR, | |
772 | BTRFS_FS_QUOTA_OVERRIDE, | |
773 | /* Used to record internally whether fs has been frozen */ | |
774 | BTRFS_FS_FROZEN, | |
775 | /* | |
776 | * Indicate that a whole-filesystem exclusive operation is running | |
777 | * (device replace, resize, device add/delete, balance) | |
778 | */ | |
779 | BTRFS_FS_EXCL_OP, | |
780 | /* | |
781 | * To info transaction_kthread we need an immediate commit so it | |
782 | * doesn't need to wait for commit_interval | |
783 | */ | |
784 | BTRFS_FS_NEED_ASYNC_COMMIT, | |
785 | /* | |
786 | * Indicate that balance has been set up from the ioctl and is in the | |
787 | * main phase. The fs_info::balance_ctl is initialized. | |
788 | */ | |
789 | BTRFS_FS_BALANCE_RUNNING, | |
790 | }; | |
3009a62f | 791 | |
9f5fae2f | 792 | struct btrfs_fs_info { |
e17cade2 | 793 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
afcdd129 | 794 | unsigned long flags; |
62e2749e CM |
795 | struct btrfs_root *extent_root; |
796 | struct btrfs_root *tree_root; | |
0b86a832 CM |
797 | struct btrfs_root *chunk_root; |
798 | struct btrfs_root *dev_root; | |
3de4586c | 799 | struct btrfs_root *fs_root; |
d20f7043 | 800 | struct btrfs_root *csum_root; |
416ac51d | 801 | struct btrfs_root *quota_root; |
f7a81ea4 | 802 | struct btrfs_root *uuid_root; |
a5ed9182 | 803 | struct btrfs_root *free_space_root; |
e02119d5 CM |
804 | |
805 | /* the log root tree is a directory of all the other log roots */ | |
806 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
807 | |
808 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 809 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 810 | |
0f9dd46c JB |
811 | /* block group cache stuff */ |
812 | spinlock_t block_group_cache_lock; | |
a1897fdd | 813 | u64 first_logical_byte; |
0f9dd46c JB |
814 | struct rb_root block_group_cache_tree; |
815 | ||
2bf64758 | 816 | /* keep track of unallocated space */ |
a5ed45f8 | 817 | atomic64_t free_chunk_space; |
2bf64758 | 818 | |
11833d66 YZ |
819 | struct extent_io_tree freed_extents[2]; |
820 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 821 | |
0b86a832 CM |
822 | /* logical->physical extent mapping */ |
823 | struct btrfs_mapping_tree mapping_tree; | |
824 | ||
16cdcec7 MX |
825 | /* |
826 | * block reservation for extent, checksum, root tree and | |
827 | * delayed dir index item | |
828 | */ | |
f0486c68 | 829 | struct btrfs_block_rsv global_block_rsv; |
f0486c68 YZ |
830 | /* block reservation for metadata operations */ |
831 | struct btrfs_block_rsv trans_block_rsv; | |
832 | /* block reservation for chunk tree */ | |
833 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
834 | /* block reservation for delayed operations */ |
835 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
836 | |
837 | struct btrfs_block_rsv empty_block_rsv; | |
838 | ||
293ffd5f | 839 | u64 generation; |
15ee9bc7 | 840 | u64 last_trans_committed; |
0a2b2a84 | 841 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
842 | |
843 | /* | |
844 | * this is updated to the current trans every time a full commit | |
845 | * is required instead of the faster short fsync log commits | |
846 | */ | |
847 | u64 last_trans_log_full_commit; | |
25cd999e | 848 | unsigned long mount_opt; |
572d9ab7 DS |
849 | /* |
850 | * Track requests for actions that need to be done during transaction | |
851 | * commit (like for some mount options). | |
852 | */ | |
853 | unsigned long pending_changes; | |
261507a0 | 854 | unsigned long compress_type:4; |
f51d2b59 | 855 | unsigned int compress_level; |
d3740608 | 856 | u32 commit_interval; |
8c6a3ee6 MX |
857 | /* |
858 | * It is a suggestive number, the read side is safe even it gets a | |
859 | * wrong number because we will write out the data into a regular | |
860 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
861 | * so it is also safe. | |
862 | */ | |
6f568d35 | 863 | u64 max_inline; |
0d0c71b3 | 864 | |
79154b1b | 865 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 866 | wait_queue_head_t transaction_throttle; |
f9295749 | 867 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 868 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 869 | wait_queue_head_t async_submit_wait; |
e02119d5 | 870 | |
ceda0864 MX |
871 | /* |
872 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
873 | * when they are updated. | |
874 | * | |
875 | * Because we do not clear the flags for ever, so we needn't use | |
876 | * the lock on the read side. | |
877 | * | |
878 | * We also needn't use the lock when we mount the fs, because | |
879 | * there is no other task which will update the flag. | |
880 | */ | |
881 | spinlock_t super_lock; | |
6c41761f DS |
882 | struct btrfs_super_block *super_copy; |
883 | struct btrfs_super_block *super_for_commit; | |
e20d96d6 | 884 | struct super_block *sb; |
d98237b3 | 885 | struct inode *btree_inode; |
e02119d5 | 886 | struct mutex tree_log_mutex; |
a74a4b97 CM |
887 | struct mutex transaction_kthread_mutex; |
888 | struct mutex cleaner_mutex; | |
925baedd | 889 | struct mutex chunk_mutex; |
53b381b3 | 890 | |
1bbc621e CM |
891 | /* |
892 | * this is taken to make sure we don't set block groups ro after | |
893 | * the free space cache has been allocated on them | |
894 | */ | |
895 | struct mutex ro_block_group_mutex; | |
896 | ||
53b381b3 DW |
897 | /* this is used during read/modify/write to make sure |
898 | * no two ios are trying to mod the same stripe at the same | |
899 | * time | |
900 | */ | |
901 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
902 | ||
5a3f23d5 CM |
903 | /* |
904 | * this protects the ordered operations list only while we are | |
905 | * processing all of the entries on it. This way we make | |
906 | * sure the commit code doesn't find the list temporarily empty | |
907 | * because another function happens to be doing non-waiting preflush | |
908 | * before jumping into the main commit. | |
909 | */ | |
910 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 911 | |
9e351cc8 | 912 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 913 | |
c71bf099 | 914 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 915 | |
c71bf099 | 916 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
917 | struct srcu_struct subvol_srcu; |
918 | ||
a4abeea4 | 919 | spinlock_t trans_lock; |
7585717f CM |
920 | /* |
921 | * the reloc mutex goes with the trans lock, it is taken | |
922 | * during commit to protect us from the relocation code | |
923 | */ | |
924 | struct mutex reloc_mutex; | |
925 | ||
8fd17795 | 926 | struct list_head trans_list; |
facda1e7 | 927 | struct list_head dead_roots; |
11833d66 | 928 | struct list_head caching_block_groups; |
e02119d5 | 929 | |
24bbcf04 YZ |
930 | spinlock_t delayed_iput_lock; |
931 | struct list_head delayed_iputs; | |
c2d6cb16 | 932 | struct mutex cleaner_delayed_iput_mutex; |
24bbcf04 | 933 | |
f29021b2 JS |
934 | /* this protects tree_mod_seq_list */ |
935 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 936 | atomic64_t tree_mod_seq; |
f29021b2 JS |
937 | struct list_head tree_mod_seq_list; |
938 | ||
939 | /* this protects tree_mod_log */ | |
940 | rwlock_t tree_mod_log_lock; | |
941 | struct rb_root tree_mod_log; | |
942 | ||
771ed689 | 943 | atomic_t async_delalloc_pages; |
ce9adaa5 | 944 | |
3eaa2885 | 945 | /* |
199c2a9c | 946 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 947 | */ |
199c2a9c | 948 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
949 | |
950 | /* | |
199c2a9c MX |
951 | * all fs/file tree roots in which there are data=ordered extents |
952 | * pending writeback are added into this list. | |
953 | * | |
5a3f23d5 CM |
954 | * these can span multiple transactions and basically include |
955 | * every dirty data page that isn't from nodatacow | |
956 | */ | |
199c2a9c | 957 | struct list_head ordered_roots; |
5a3f23d5 | 958 | |
573bfb72 | 959 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
960 | spinlock_t delalloc_root_lock; |
961 | /* all fs/file tree roots that have delalloc inodes. */ | |
962 | struct list_head delalloc_roots; | |
3eaa2885 | 963 | |
8b712842 CM |
964 | /* |
965 | * there is a pool of worker threads for checksumming during writes | |
966 | * and a pool for checksumming after reads. This is because readers | |
967 | * can run with FS locks held, and the writers may be waiting for | |
968 | * those locks. We don't want ordering in the pending list to cause | |
969 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
970 | * |
971 | * A third pool does submit_bio to avoid deadlocking with the other | |
972 | * two | |
8b712842 | 973 | */ |
d458b054 QW |
974 | struct btrfs_workqueue *workers; |
975 | struct btrfs_workqueue *delalloc_workers; | |
976 | struct btrfs_workqueue *flush_workers; | |
977 | struct btrfs_workqueue *endio_workers; | |
978 | struct btrfs_workqueue *endio_meta_workers; | |
979 | struct btrfs_workqueue *endio_raid56_workers; | |
8b110e39 | 980 | struct btrfs_workqueue *endio_repair_workers; |
d458b054 QW |
981 | struct btrfs_workqueue *rmw_workers; |
982 | struct btrfs_workqueue *endio_meta_write_workers; | |
983 | struct btrfs_workqueue *endio_write_workers; | |
984 | struct btrfs_workqueue *endio_freespace_worker; | |
985 | struct btrfs_workqueue *submit_workers; | |
986 | struct btrfs_workqueue *caching_workers; | |
987 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 988 | |
247e743c CM |
989 | /* |
990 | * fixup workers take dirty pages that didn't properly go through | |
991 | * the cow mechanism and make them safe to write. It happens | |
992 | * for the sys_munmap function call path | |
993 | */ | |
d458b054 QW |
994 | struct btrfs_workqueue *fixup_workers; |
995 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b CM |
996 | |
997 | /* the extent workers do delayed refs on the extent allocation tree */ | |
998 | struct btrfs_workqueue *extent_workers; | |
a74a4b97 CM |
999 | struct task_struct *transaction_kthread; |
1000 | struct task_struct *cleaner_kthread; | |
f7b885be | 1001 | u32 thread_pool_size; |
8b712842 | 1002 | |
6ab0a202 | 1003 | struct kobject *space_info_kobj; |
75cb379d JM |
1004 | struct list_head pending_raid_kobjs; |
1005 | spinlock_t pending_raid_kobjs_lock; /* uncontended */ | |
9f5fae2f | 1006 | |
324ae4df | 1007 | u64 total_pinned; |
b9473439 | 1008 | |
e2d84521 MX |
1009 | /* used to keep from writing metadata until there is a nice batch */ |
1010 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 1011 | struct percpu_counter delalloc_bytes; |
e2d84521 | 1012 | s32 dirty_metadata_batch; |
963d678b MX |
1013 | s32 delalloc_batch; |
1014 | ||
0b86a832 CM |
1015 | struct list_head dirty_cowonly_roots; |
1016 | ||
8a4b83cc | 1017 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1018 | |
1019 | /* | |
dc2d3005 JM |
1020 | * The space_info list is effectively read only after initial |
1021 | * setup. It is populated at mount time and cleaned up after | |
1022 | * all block groups are removed. RCU is used to protect it. | |
4184ea7f | 1023 | */ |
6324fbf3 | 1024 | struct list_head space_info; |
4184ea7f | 1025 | |
b4d7c3c9 LZ |
1026 | struct btrfs_space_info *data_sinfo; |
1027 | ||
5d4f98a2 YZ |
1028 | struct reloc_control *reloc_ctl; |
1029 | ||
583b7231 | 1030 | /* data_alloc_cluster is only used in ssd_spread mode */ |
fa9c0d79 CM |
1031 | struct btrfs_free_cluster data_alloc_cluster; |
1032 | ||
1033 | /* all metadata allocations go through this cluster */ | |
1034 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1035 | |
4cb5300b CM |
1036 | /* auto defrag inodes go here */ |
1037 | spinlock_t defrag_inodes_lock; | |
1038 | struct rb_root defrag_inodes; | |
1039 | atomic_t defrag_running; | |
1040 | ||
de98ced9 MX |
1041 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
1042 | seqlock_t profiles_lock; | |
a46d11a8 ID |
1043 | /* |
1044 | * these three are in extended format (availability of single | |
1045 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
1046 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
1047 | */ | |
d18a2c44 CM |
1048 | u64 avail_data_alloc_bits; |
1049 | u64 avail_metadata_alloc_bits; | |
1050 | u64 avail_system_alloc_bits; | |
788f20eb | 1051 | |
c9e9f97b ID |
1052 | /* restriper state */ |
1053 | spinlock_t balance_lock; | |
1054 | struct mutex balance_mutex; | |
837d5b6e | 1055 | atomic_t balance_pause_req; |
a7e99c69 | 1056 | atomic_t balance_cancel_req; |
c9e9f97b | 1057 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1058 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1059 | |
d612ac59 AJ |
1060 | u32 data_chunk_allocations; |
1061 | u32 metadata_ratio; | |
97e728d4 | 1062 | |
788f20eb | 1063 | void *bdev_holder; |
acce952b | 1064 | |
a2de733c AJ |
1065 | /* private scrub information */ |
1066 | struct mutex scrub_lock; | |
1067 | atomic_t scrubs_running; | |
1068 | atomic_t scrub_pause_req; | |
1069 | atomic_t scrubs_paused; | |
1070 | atomic_t scrub_cancel_req; | |
1071 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 1072 | int scrub_workers_refcnt; |
d458b054 QW |
1073 | struct btrfs_workqueue *scrub_workers; |
1074 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
1075 | struct btrfs_workqueue *scrub_nocow_workers; | |
20b2e302 | 1076 | struct btrfs_workqueue *scrub_parity_workers; |
a2de733c | 1077 | |
21adbd5c SB |
1078 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1079 | u32 check_integrity_print_mask; | |
1080 | #endif | |
416ac51d AJ |
1081 | /* is qgroup tracking in a consistent state? */ |
1082 | u64 qgroup_flags; | |
1083 | ||
1084 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1085 | struct rb_root qgroup_tree; | |
fcebe456 | 1086 | struct rb_root qgroup_op_tree; |
416ac51d | 1087 | spinlock_t qgroup_lock; |
fcebe456 JB |
1088 | spinlock_t qgroup_op_lock; |
1089 | atomic_t qgroup_op_seq; | |
416ac51d | 1090 | |
1e8f9158 WS |
1091 | /* |
1092 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1093 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1094 | */ | |
1095 | struct ulist *qgroup_ulist; | |
1096 | ||
f2f6ed3d WS |
1097 | /* protect user change for quota operations */ |
1098 | struct mutex qgroup_ioctl_lock; | |
1099 | ||
416ac51d AJ |
1100 | /* list of dirty qgroups to be written at next commit */ |
1101 | struct list_head dirty_qgroups; | |
1102 | ||
e69bcee3 | 1103 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 1104 | u64 qgroup_seq; |
21adbd5c | 1105 | |
2f232036 JS |
1106 | /* qgroup rescan items */ |
1107 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1108 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1109 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1110 | struct completion qgroup_rescan_completion; |
b382a324 | 1111 | struct btrfs_work qgroup_rescan_work; |
d2c609b8 | 1112 | bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ |
2f232036 | 1113 | |
acce952b | 1114 | /* filesystem state */ |
87533c47 | 1115 | unsigned long fs_state; |
16cdcec7 MX |
1116 | |
1117 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1118 | |
90519d66 AJ |
1119 | /* readahead tree */ |
1120 | spinlock_t reada_lock; | |
1121 | struct radix_tree_root reada_tree; | |
531f4b1a | 1122 | |
2fefd558 ZL |
1123 | /* readahead works cnt */ |
1124 | atomic_t reada_works_cnt; | |
1125 | ||
f28491e0 JB |
1126 | /* Extent buffer radix tree */ |
1127 | spinlock_t buffer_lock; | |
1128 | struct radix_tree_root buffer_radix; | |
1129 | ||
af31f5e5 CM |
1130 | /* next backup root to be overwritten */ |
1131 | int backup_root_index; | |
5af3e8cc | 1132 | |
e922e087 SB |
1133 | /* device replace state */ |
1134 | struct btrfs_dev_replace dev_replace; | |
5ac00add | 1135 | |
803b2f54 | 1136 | struct semaphore uuid_tree_rescan_sem; |
21c7e756 MX |
1137 | |
1138 | /* Used to reclaim the metadata space in the background. */ | |
1139 | struct work_struct async_reclaim_work; | |
47ab2a6c JB |
1140 | |
1141 | spinlock_t unused_bgs_lock; | |
1142 | struct list_head unused_bgs; | |
d4b450cd | 1143 | struct mutex unused_bg_unpin_mutex; |
67c5e7d4 | 1144 | struct mutex delete_unused_bgs_mutex; |
f667aef6 QW |
1145 | |
1146 | /* For btrfs to record security options */ | |
1147 | struct security_mnt_opts security_opts; | |
04216820 FM |
1148 | |
1149 | /* | |
1150 | * Chunks that can't be freed yet (under a trim/discard operation) | |
1151 | * and will be latter freed. Protected by fs_info->chunk_mutex. | |
1152 | */ | |
1153 | struct list_head pinned_chunks; | |
511711af | 1154 | |
da17066c JM |
1155 | /* Cached block sizes */ |
1156 | u32 nodesize; | |
1157 | u32 sectorsize; | |
1158 | u32 stripesize; | |
fd708b81 | 1159 | |
eede2bf3 OS |
1160 | /* Block groups and devices containing active swapfiles. */ |
1161 | spinlock_t swapfile_pins_lock; | |
1162 | struct rb_root swapfile_pins; | |
1163 | ||
fd708b81 JB |
1164 | #ifdef CONFIG_BTRFS_FS_REF_VERIFY |
1165 | spinlock_t ref_verify_lock; | |
1166 | struct rb_root block_tree; | |
1167 | #endif | |
324ae4df | 1168 | }; |
0b86a832 | 1169 | |
da17066c JM |
1170 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
1171 | { | |
1172 | return sb->s_fs_info; | |
1173 | } | |
1174 | ||
8257b2dc MX |
1175 | struct btrfs_subvolume_writers { |
1176 | struct percpu_counter counter; | |
1177 | wait_queue_head_t wait; | |
1178 | }; | |
1179 | ||
27cdeb70 MX |
1180 | /* |
1181 | * The state of btrfs root | |
1182 | */ | |
1183 | /* | |
1184 | * btrfs_record_root_in_trans is a multi-step process, | |
1185 | * and it can race with the balancing code. But the | |
1186 | * race is very small, and only the first time the root | |
1187 | * is added to each transaction. So IN_TRANS_SETUP | |
1188 | * is used to tell us when more checks are required | |
1189 | */ | |
1190 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 | |
1191 | #define BTRFS_ROOT_REF_COWS 1 | |
1192 | #define BTRFS_ROOT_TRACK_DIRTY 2 | |
1193 | #define BTRFS_ROOT_IN_RADIX 3 | |
f5ee5c9a JM |
1194 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 4 |
1195 | #define BTRFS_ROOT_DEFRAG_RUNNING 5 | |
1196 | #define BTRFS_ROOT_FORCE_COW 6 | |
1197 | #define BTRFS_ROOT_MULTI_LOG_TASKS 7 | |
1198 | #define BTRFS_ROOT_DIRTY 8 | |
27cdeb70 | 1199 | |
9f5fae2f CM |
1200 | /* |
1201 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1202 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1203 | */ |
1204 | struct btrfs_root { | |
5f39d397 | 1205 | struct extent_buffer *node; |
925baedd | 1206 | |
5f39d397 | 1207 | struct extent_buffer *commit_root; |
e02119d5 | 1208 | struct btrfs_root *log_root; |
1a40e23b | 1209 | struct btrfs_root *reloc_root; |
31153d81 | 1210 | |
27cdeb70 | 1211 | unsigned long state; |
62e2749e CM |
1212 | struct btrfs_root_item root_item; |
1213 | struct btrfs_key root_key; | |
9f5fae2f | 1214 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1215 | struct extent_io_tree dirty_log_pages; |
1216 | ||
a2135011 | 1217 | struct mutex objectid_mutex; |
7237f183 | 1218 | |
f0486c68 YZ |
1219 | spinlock_t accounting_lock; |
1220 | struct btrfs_block_rsv *block_rsv; | |
1221 | ||
581bb050 | 1222 | /* free ino cache stuff */ |
581bb050 | 1223 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1224 | enum btrfs_caching_type ino_cache_state; |
1225 | spinlock_t ino_cache_lock; | |
1226 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1227 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1228 | u64 ino_cache_progress; |
1229 | struct inode *ino_cache_inode; | |
581bb050 | 1230 | |
e02119d5 | 1231 | struct mutex log_mutex; |
7237f183 YZ |
1232 | wait_queue_head_t log_writer_wait; |
1233 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1234 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1235 | atomic_t log_writers; |
1236 | atomic_t log_commit[2]; | |
2ecb7923 | 1237 | atomic_t log_batch; |
bb14a59b | 1238 | int log_transid; |
d1433deb MX |
1239 | /* No matter the commit succeeds or not*/ |
1240 | int log_transid_committed; | |
1241 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1242 | int last_log_commit; |
ff782e0a | 1243 | pid_t log_start_pid; |
ea8c2819 | 1244 | |
0f7d52f4 | 1245 | u64 last_trans; |
5f39d397 | 1246 | |
9f5fae2f | 1247 | u32 type; |
13a8a7c8 YZ |
1248 | |
1249 | u64 highest_objectid; | |
7585717f | 1250 | |
3f157a2f | 1251 | u64 defrag_trans_start; |
6702ed49 | 1252 | struct btrfs_key defrag_progress; |
0ef3e66b | 1253 | struct btrfs_key defrag_max; |
0b86a832 CM |
1254 | |
1255 | /* the dirty list is only used by non-reference counted roots */ | |
1256 | struct list_head dirty_list; | |
7b128766 | 1257 | |
5d4f98a2 YZ |
1258 | struct list_head root_list; |
1259 | ||
2ab28f32 JB |
1260 | spinlock_t log_extents_lock[2]; |
1261 | struct list_head logged_list[2]; | |
1262 | ||
d68fc57b | 1263 | int orphan_cleanup_state; |
3394e160 | 1264 | |
5d4f98a2 YZ |
1265 | spinlock_t inode_lock; |
1266 | /* red-black tree that keeps track of in-memory inodes */ | |
1267 | struct rb_root inode_tree; | |
1268 | ||
16cdcec7 MX |
1269 | /* |
1270 | * radix tree that keeps track of delayed nodes of every inode, | |
1271 | * protected by inode_lock | |
1272 | */ | |
1273 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1274 | /* |
1275 | * right now this just gets used so that a root has its own devid | |
1276 | * for stat. It may be used for more later | |
1277 | */ | |
0ee5dc67 | 1278 | dev_t anon_dev; |
f1ebcc74 | 1279 | |
5f3ab90a | 1280 | spinlock_t root_item_lock; |
0700cea7 | 1281 | refcount_t refs; |
eb73c1b7 | 1282 | |
573bfb72 | 1283 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1284 | spinlock_t delalloc_lock; |
1285 | /* | |
1286 | * all of the inodes that have delalloc bytes. It is possible for | |
1287 | * this list to be empty even when there is still dirty data=ordered | |
1288 | * extents waiting to finish IO. | |
1289 | */ | |
1290 | struct list_head delalloc_inodes; | |
1291 | struct list_head delalloc_root; | |
1292 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1293 | |
1294 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1295 | /* |
1296 | * this is used by the balancing code to wait for all the pending | |
1297 | * ordered extents | |
1298 | */ | |
1299 | spinlock_t ordered_extent_lock; | |
1300 | ||
1301 | /* | |
1302 | * all of the data=ordered extents pending writeback | |
1303 | * these can span multiple transactions and basically include | |
1304 | * every dirty data page that isn't from nodatacow | |
1305 | */ | |
1306 | struct list_head ordered_extents; | |
1307 | struct list_head ordered_root; | |
1308 | u64 nr_ordered_extents; | |
2c686537 DS |
1309 | |
1310 | /* | |
1311 | * Number of currently running SEND ioctls to prevent | |
1312 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1313 | */ | |
1314 | int send_in_progress; | |
8257b2dc | 1315 | struct btrfs_subvolume_writers *subv_writers; |
ea14b57f | 1316 | atomic_t will_be_snapshotted; |
8ecebf4d | 1317 | atomic_t snapshot_force_cow; |
8287475a QW |
1318 | |
1319 | /* For qgroup metadata reserved space */ | |
1320 | spinlock_t qgroup_meta_rsv_lock; | |
1321 | u64 qgroup_meta_rsv_pertrans; | |
1322 | u64 qgroup_meta_rsv_prealloc; | |
57ec5fb4 | 1323 | |
eede2bf3 OS |
1324 | /* Number of active swapfiles */ |
1325 | atomic_t nr_swapfiles; | |
1326 | ||
57ec5fb4 DS |
1327 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
1328 | u64 alloc_bytenr; | |
1329 | #endif | |
62e2749e | 1330 | }; |
118c701e | 1331 | |
23b5ec74 | 1332 | struct btrfs_file_private { |
23b5ec74 JB |
1333 | void *filldir_buf; |
1334 | }; | |
1335 | ||
da17066c JM |
1336 | static inline u32 btrfs_inode_sectorsize(const struct inode *inode) |
1337 | { | |
1338 | return btrfs_sb(inode->i_sb)->sectorsize; | |
1339 | } | |
62e2749e | 1340 | |
da17066c | 1341 | static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1342 | { |
118c701e NB |
1343 | |
1344 | return info->nodesize - sizeof(struct btrfs_header); | |
1db1ff92 JM |
1345 | } |
1346 | ||
3d9ec8c4 NB |
1347 | #define BTRFS_LEAF_DATA_OFFSET offsetof(struct btrfs_leaf, items) |
1348 | ||
da17066c | 1349 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1350 | { |
da17066c | 1351 | return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item); |
1db1ff92 JM |
1352 | } |
1353 | ||
da17066c | 1354 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info) |
1db1ff92 | 1355 | { |
da17066c | 1356 | return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr); |
1db1ff92 JM |
1357 | } |
1358 | ||
1359 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ | |
1360 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
da17066c | 1361 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1362 | { |
da17066c | 1363 | return BTRFS_MAX_ITEM_SIZE(info) - |
1db1ff92 JM |
1364 | BTRFS_FILE_EXTENT_INLINE_DATA_START; |
1365 | } | |
1366 | ||
da17066c | 1367 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1368 | { |
da17066c | 1369 | return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item); |
1db1ff92 JM |
1370 | } |
1371 | ||
0942caa3 DS |
1372 | /* |
1373 | * Flags for mount options. | |
1374 | * | |
1375 | * Note: don't forget to add new options to btrfs_show_options() | |
1376 | */ | |
21ad10cf CM |
1377 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1378 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1379 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1380 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1381 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1382 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1383 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1384 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1385 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1386 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1387 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1388 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1389 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1390 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1391 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1392 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1393 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1394 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
8dcddfa0 | 1395 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
9555c6c1 | 1396 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1397 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1398 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1399 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 1400 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
d0bd4560 JB |
1401 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
1402 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) | |
f7d3d2f9 | 1403 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
96da0919 | 1404 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
fb592373 | 1405 | #define BTRFS_MOUNT_REF_VERIFY (1 << 28) |
b6cda9bc | 1406 | |
8b87dc17 | 1407 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1408 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1409 | |
b6cda9bc CM |
1410 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1411 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1412 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
3cdde224 | 1413 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
b6cda9bc | 1414 | BTRFS_MOUNT_##opt) |
572d9ab7 | 1415 | |
3cdde224 | 1416 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1417 | { \ |
3cdde224 JM |
1418 | if (!btrfs_test_opt(fs_info, opt)) \ |
1419 | btrfs_info(fs_info, fmt, ##args); \ | |
1420 | btrfs_set_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1421 | } |
1422 | ||
3cdde224 | 1423 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1424 | { \ |
3cdde224 JM |
1425 | if (btrfs_test_opt(fs_info, opt)) \ |
1426 | btrfs_info(fs_info, fmt, ##args); \ | |
1427 | btrfs_clear_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1428 | } |
1429 | ||
d0bd4560 JB |
1430 | #ifdef CONFIG_BTRFS_DEBUG |
1431 | static inline int | |
2ff7e61e | 1432 | btrfs_should_fragment_free_space(struct btrfs_block_group_cache *block_group) |
d0bd4560 | 1433 | { |
2ff7e61e | 1434 | struct btrfs_fs_info *fs_info = block_group->fs_info; |
0b246afa JM |
1435 | |
1436 | return (btrfs_test_opt(fs_info, FRAGMENT_METADATA) && | |
d0bd4560 | 1437 | block_group->flags & BTRFS_BLOCK_GROUP_METADATA) || |
0b246afa | 1438 | (btrfs_test_opt(fs_info, FRAGMENT_DATA) && |
d0bd4560 JB |
1439 | block_group->flags & BTRFS_BLOCK_GROUP_DATA); |
1440 | } | |
1441 | #endif | |
1442 | ||
572d9ab7 DS |
1443 | /* |
1444 | * Requests for changes that need to be done during transaction commit. | |
1445 | * | |
1446 | * Internal mount options that are used for special handling of the real | |
1447 | * mount options (eg. cannot be set during remount and have to be set during | |
1448 | * transaction commit) | |
1449 | */ | |
1450 | ||
7e1876ac DS |
1451 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
1452 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) | |
d51033d0 | 1453 | #define BTRFS_PENDING_COMMIT (2) |
7e1876ac | 1454 | |
572d9ab7 DS |
1455 | #define btrfs_test_pending(info, opt) \ |
1456 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1457 | #define btrfs_set_pending(info, opt) \ | |
1458 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1459 | #define btrfs_clear_pending(info, opt) \ | |
1460 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1461 | ||
1462 | /* | |
1463 | * Helpers for setting pending mount option changes. | |
1464 | * | |
1465 | * Expects corresponding macros | |
1466 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1467 | */ | |
1468 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1469 | do { \ | |
1470 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1471 | btrfs_info((info), fmt, ##args); \ | |
1472 | btrfs_set_pending((info), SET_##opt); \ | |
1473 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1474 | } \ | |
1475 | } while(0) | |
1476 | ||
1477 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1478 | do { \ | |
1479 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1480 | btrfs_info((info), fmt, ##args); \ | |
1481 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1482 | btrfs_clear_pending((info), SET_##opt); \ | |
1483 | } \ | |
1484 | } while(0) | |
1485 | ||
b98b6767 Y |
1486 | /* |
1487 | * Inode flags | |
1488 | */ | |
fdebe2bd Y |
1489 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1490 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1491 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1492 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1493 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1494 | #define BTRFS_INODE_SYNC (1 << 5) |
1495 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1496 | #define BTRFS_INODE_APPEND (1 << 7) | |
1497 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1498 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1499 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1500 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1501 | |
08fe4db1 LZ |
1502 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1503 | ||
cfed81a0 | 1504 | struct btrfs_map_token { |
1cbb1f45 | 1505 | const struct extent_buffer *eb; |
cfed81a0 CM |
1506 | char *kaddr; |
1507 | unsigned long offset; | |
1508 | }; | |
1509 | ||
2e78c927 CR |
1510 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
1511 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) | |
1512 | ||
cfed81a0 CM |
1513 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
1514 | { | |
ad914559 | 1515 | token->kaddr = NULL; |
cfed81a0 CM |
1516 | } |
1517 | ||
01327610 | 1518 | /* some macros to generate set/get functions for the struct fields. This |
5f39d397 CM |
1519 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
1520 | * one for u8: | |
1521 | */ | |
1522 | #define le8_to_cpu(v) (v) | |
1523 | #define cpu_to_le8(v) (v) | |
1524 | #define __le8 u8 | |
1525 | ||
62e85577 | 1526 | #define read_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1527 | read_extent_buffer(eb, (char *)(result), \ |
1528 | ((unsigned long)(ptr)) + \ | |
1529 | offsetof(type, member), \ | |
1530 | sizeof(((type *)0)->member))) | |
1531 | ||
62e85577 | 1532 | #define write_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1533 | write_extent_buffer(eb, (char *)(result), \ |
1534 | ((unsigned long)(ptr)) + \ | |
1535 | offsetof(type, member), \ | |
1536 | sizeof(((type *)0)->member))) | |
1537 | ||
18077bb4 | 1538 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1cbb1f45 JM |
1539 | u##bits btrfs_get_token_##bits(const struct extent_buffer *eb, \ |
1540 | const void *ptr, unsigned long off, \ | |
1541 | struct btrfs_map_token *token); \ | |
1542 | void btrfs_set_token_##bits(struct extent_buffer *eb, const void *ptr, \ | |
18077bb4 LZ |
1543 | unsigned long off, u##bits val, \ |
1544 | struct btrfs_map_token *token); \ | |
1cbb1f45 JM |
1545 | static inline u##bits btrfs_get_##bits(const struct extent_buffer *eb, \ |
1546 | const void *ptr, \ | |
18077bb4 LZ |
1547 | unsigned long off) \ |
1548 | { \ | |
1549 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1550 | } \ | |
1cbb1f45 | 1551 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr,\ |
18077bb4 LZ |
1552 | unsigned long off, u##bits val) \ |
1553 | { \ | |
1554 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1555 | } | |
1556 | ||
1557 | DECLARE_BTRFS_SETGET_BITS(8) | |
1558 | DECLARE_BTRFS_SETGET_BITS(16) | |
1559 | DECLARE_BTRFS_SETGET_BITS(32) | |
1560 | DECLARE_BTRFS_SETGET_BITS(64) | |
1561 | ||
5f39d397 | 1562 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
1cbb1f45 JM |
1563 | static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ |
1564 | const type *s) \ | |
18077bb4 LZ |
1565 | { \ |
1566 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1567 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1568 | } \ | |
1569 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1570 | u##bits val) \ | |
1571 | { \ | |
1572 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1573 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1574 | } \ | |
1cbb1f45 JM |
1575 | static inline u##bits btrfs_token_##name(const struct extent_buffer *eb,\ |
1576 | const type *s, \ | |
18077bb4 LZ |
1577 | struct btrfs_map_token *token) \ |
1578 | { \ | |
1579 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1580 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1581 | } \ | |
1582 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
1583 | type *s, u##bits val, \ | |
1584 | struct btrfs_map_token *token) \ | |
1585 | { \ | |
1586 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1587 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
1588 | } | |
5f39d397 CM |
1589 | |
1590 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1cbb1f45 | 1591 | static inline u##bits btrfs_##name(const struct extent_buffer *eb) \ |
5f39d397 | 1592 | { \ |
1cbb1f45 | 1593 | const type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1594 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1595 | return res; \ |
5f39d397 CM |
1596 | } \ |
1597 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1598 | u##bits val) \ | |
1599 | { \ | |
727011e0 | 1600 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1601 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1602 | } |
9078a3e1 | 1603 | |
5f39d397 | 1604 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1cbb1f45 | 1605 | static inline u##bits btrfs_##name(const type *s) \ |
5f39d397 CM |
1606 | { \ |
1607 | return le##bits##_to_cpu(s->member); \ | |
1608 | } \ | |
1609 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1610 | { \ | |
1611 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1612 | } |
1613 | ||
eca152ed NB |
1614 | |
1615 | static inline u64 btrfs_device_total_bytes(struct extent_buffer *eb, | |
1616 | struct btrfs_dev_item *s) | |
1617 | { | |
1618 | BUILD_BUG_ON(sizeof(u64) != | |
1619 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
1620 | return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, | |
1621 | total_bytes)); | |
1622 | } | |
1623 | static inline void btrfs_set_device_total_bytes(struct extent_buffer *eb, | |
1624 | struct btrfs_dev_item *s, | |
1625 | u64 val) | |
1626 | { | |
1627 | BUILD_BUG_ON(sizeof(u64) != | |
1628 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
7dfb8be1 | 1629 | WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize)); |
eca152ed NB |
1630 | btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val); |
1631 | } | |
1632 | ||
1633 | ||
0b86a832 | 1634 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
0b86a832 CM |
1635 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
1636 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1637 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1638 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1639 | start_offset, 64); | |
0b86a832 CM |
1640 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1641 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1642 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1643 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1644 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1645 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1646 | |
8a4b83cc CM |
1647 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1648 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1649 | total_bytes, 64); | |
1650 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1651 | bytes_used, 64); | |
1652 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1653 | io_align, 32); | |
1654 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1655 | io_width, 32); | |
1656 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1657 | sector_size, 32); | |
1658 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1659 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1660 | dev_group, 32); | |
1661 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1662 | seek_speed, 8); | |
1663 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1664 | bandwidth, 8); | |
2b82032c YZ |
1665 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1666 | generation, 64); | |
8a4b83cc | 1667 | |
410ba3a2 | 1668 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1669 | { |
410ba3a2 | 1670 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1671 | } |
1672 | ||
1473b24e | 1673 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1674 | { |
1473b24e | 1675 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1676 | } |
1677 | ||
e17cade2 | 1678 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1679 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1680 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1681 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1682 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1683 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1684 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1685 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1686 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1687 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1688 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1689 | ||
e17cade2 CM |
1690 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1691 | { | |
1692 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1693 | } | |
1694 | ||
1695 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1696 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1697 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1698 | stripe_len, 64); | |
1699 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1700 | io_align, 32); | |
1701 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1702 | io_width, 32); | |
1703 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1704 | sector_size, 32); | |
1705 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1706 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1707 | num_stripes, 16); | |
321aecc6 CM |
1708 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1709 | sub_stripes, 16); | |
0b86a832 CM |
1710 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1711 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1712 | ||
1713 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1714 | int nr) | |
1715 | { | |
1716 | unsigned long offset = (unsigned long)c; | |
1717 | offset += offsetof(struct btrfs_chunk, stripe); | |
1718 | offset += nr * sizeof(struct btrfs_stripe); | |
1719 | return (struct btrfs_stripe *)offset; | |
1720 | } | |
1721 | ||
a443755f CM |
1722 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1723 | { | |
1724 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1725 | } | |
1726 | ||
0b86a832 CM |
1727 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1728 | struct btrfs_chunk *c, int nr) | |
1729 | { | |
1730 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1731 | } | |
1732 | ||
0b86a832 CM |
1733 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1734 | struct btrfs_chunk *c, int nr) | |
1735 | { | |
1736 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1737 | } | |
1738 | ||
5f39d397 CM |
1739 | /* struct btrfs_block_group_item */ |
1740 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1741 | used, 64); | |
1742 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1743 | used, 64); | |
0b86a832 CM |
1744 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1745 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1746 | |
1747 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1748 | struct btrfs_block_group_item, chunk_objectid, 64); |
1749 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1750 | struct btrfs_block_group_item, flags, 64); | |
1751 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1752 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1753 | |
208acb8c OS |
1754 | /* struct btrfs_free_space_info */ |
1755 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1756 | extent_count, 32); | |
1757 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1758 | ||
3954401f CM |
1759 | /* struct btrfs_inode_ref */ |
1760 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1761 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1762 | |
f186373f MF |
1763 | /* struct btrfs_inode_extref */ |
1764 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1765 | parent_objectid, 64); | |
1766 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1767 | name_len, 16); | |
1768 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1769 | ||
5f39d397 CM |
1770 | /* struct btrfs_inode_item */ |
1771 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1772 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1773 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1774 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1775 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1776 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1777 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1778 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1779 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1780 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1781 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1782 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1783 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1784 | generation, 64); | |
1785 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1786 | sequence, 64); | |
1787 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1788 | transid, 64); | |
1789 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1790 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1791 | nbytes, 64); | |
1792 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1793 | block_group, 64); | |
1794 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1795 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1796 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1797 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1798 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1799 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1800 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1801 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1802 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1803 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1804 | |
0b86a832 | 1805 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1806 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1807 | chunk_tree, 64); | |
1808 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1809 | chunk_objectid, 64); | |
1810 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1811 | chunk_offset, 64); | |
0b86a832 CM |
1812 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1813 | ||
231e88f4 | 1814 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
1815 | { |
1816 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 1817 | return (unsigned long)dev + ptr; |
e17cade2 CM |
1818 | } |
1819 | ||
5d4f98a2 YZ |
1820 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1821 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1822 | generation, 64); | |
1823 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1824 | |
5d4f98a2 YZ |
1825 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1826 | ||
1827 | ||
1828 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1829 | ||
1830 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1831 | struct btrfs_tree_block_info *item, | |
1832 | struct btrfs_disk_key *key) | |
1833 | { | |
1834 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1835 | } | |
1836 | ||
1837 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1838 | struct btrfs_tree_block_info *item, | |
1839 | struct btrfs_disk_key *key) | |
1840 | { | |
1841 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1842 | } | |
e20d96d6 | 1843 | |
5d4f98a2 YZ |
1844 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1845 | root, 64); | |
1846 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1847 | objectid, 64); | |
1848 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1849 | offset, 64); | |
1850 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1851 | count, 32); | |
1852 | ||
1853 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1854 | count, 32); | |
1855 | ||
1856 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1857 | type, 8); | |
1858 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1859 | offset, 64); | |
1860 | ||
1861 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1862 | { | |
1863 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1864 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1865 | return sizeof(struct btrfs_extent_inline_ref); | |
1866 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1867 | return sizeof(struct btrfs_shared_data_ref) + | |
1868 | sizeof(struct btrfs_extent_inline_ref); | |
1869 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1870 | return sizeof(struct btrfs_extent_data_ref) + | |
1871 | offsetof(struct btrfs_extent_inline_ref, offset); | |
5d4f98a2 YZ |
1872 | return 0; |
1873 | } | |
1874 | ||
1875 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1876 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1877 | generation, 64); | |
1878 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1879 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1880 | |
5f39d397 CM |
1881 | /* struct btrfs_node */ |
1882 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1883 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
1884 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
1885 | blockptr, 64); | |
1886 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
1887 | generation, 64); | |
e20d96d6 | 1888 | |
5f39d397 | 1889 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1890 | { |
5f39d397 CM |
1891 | unsigned long ptr; |
1892 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1893 | sizeof(struct btrfs_key_ptr) * nr; | |
1894 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1895 | } |
1896 | ||
5f39d397 CM |
1897 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1898 | int nr, u64 val) | |
cf27e1ee | 1899 | { |
5f39d397 CM |
1900 | unsigned long ptr; |
1901 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1902 | sizeof(struct btrfs_key_ptr) * nr; | |
1903 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1904 | } |
1905 | ||
74493f7a CM |
1906 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1907 | { | |
1908 | unsigned long ptr; | |
1909 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1910 | sizeof(struct btrfs_key_ptr) * nr; | |
1911 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1912 | } | |
1913 | ||
1914 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1915 | int nr, u64 val) | |
1916 | { | |
1917 | unsigned long ptr; | |
1918 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1919 | sizeof(struct btrfs_key_ptr) * nr; | |
1920 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1921 | } | |
1922 | ||
810191ff | 1923 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1924 | { |
5f39d397 CM |
1925 | return offsetof(struct btrfs_node, ptrs) + |
1926 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1927 | } |
1928 | ||
1cbb1f45 | 1929 | void btrfs_node_key(const struct extent_buffer *eb, |
e644d021 CM |
1930 | struct btrfs_disk_key *disk_key, int nr); |
1931 | ||
5f39d397 CM |
1932 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1933 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1934 | { |
5f39d397 CM |
1935 | unsigned long ptr; |
1936 | ptr = btrfs_node_key_ptr_offset(nr); | |
1937 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1938 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1939 | } |
1940 | ||
5f39d397 CM |
1941 | /* struct btrfs_item */ |
1942 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1943 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
1944 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
1945 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 1946 | |
5f39d397 | 1947 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1948 | { |
5f39d397 CM |
1949 | return offsetof(struct btrfs_leaf, items) + |
1950 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1951 | } |
1952 | ||
dd3cc16b | 1953 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 1954 | { |
5f39d397 | 1955 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1956 | } |
1957 | ||
1cbb1f45 | 1958 | static inline u32 btrfs_item_end(const struct extent_buffer *eb, |
5f39d397 | 1959 | struct btrfs_item *item) |
0783fcfc | 1960 | { |
5f39d397 | 1961 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1962 | } |
1963 | ||
1cbb1f45 | 1964 | static inline u32 btrfs_item_end_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1965 | { |
dd3cc16b | 1966 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1967 | } |
1968 | ||
1cbb1f45 | 1969 | static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1970 | { |
dd3cc16b | 1971 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1972 | } |
1973 | ||
1cbb1f45 | 1974 | static inline u32 btrfs_item_size_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1975 | { |
dd3cc16b | 1976 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1977 | } |
1978 | ||
1cbb1f45 | 1979 | static inline void btrfs_item_key(const struct extent_buffer *eb, |
5f39d397 | 1980 | struct btrfs_disk_key *disk_key, int nr) |
1d4f6404 | 1981 | { |
dd3cc16b | 1982 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1983 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1984 | } |
1985 | ||
5f39d397 CM |
1986 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1987 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1988 | { |
dd3cc16b | 1989 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1990 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1991 | } |
1992 | ||
e02119d5 CM |
1993 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1994 | ||
0660b5af CM |
1995 | /* |
1996 | * struct btrfs_root_ref | |
1997 | */ | |
1998 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1999 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
2000 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
2001 | ||
5f39d397 | 2002 | /* struct btrfs_dir_item */ |
5103e947 | 2003 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
2004 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
2005 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 2006 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
2007 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
2008 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
2009 | data_len, 16); | |
2010 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
2011 | name_len, 16); | |
2012 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
2013 | transid, 64); | |
1d4f6404 | 2014 | |
1cbb1f45 JM |
2015 | static inline void btrfs_dir_item_key(const struct extent_buffer *eb, |
2016 | const struct btrfs_dir_item *item, | |
5f39d397 | 2017 | struct btrfs_disk_key *key) |
1d4f6404 | 2018 | { |
5f39d397 | 2019 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
2020 | } |
2021 | ||
5f39d397 CM |
2022 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
2023 | struct btrfs_dir_item *item, | |
1cbb1f45 | 2024 | const struct btrfs_disk_key *key) |
a8a2ee0c | 2025 | { |
5f39d397 | 2026 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
2027 | } |
2028 | ||
0af3d00b JB |
2029 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
2030 | num_entries, 64); | |
2031 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
2032 | num_bitmaps, 64); | |
2033 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
2034 | generation, 64); | |
2035 | ||
1cbb1f45 JM |
2036 | static inline void btrfs_free_space_key(const struct extent_buffer *eb, |
2037 | const struct btrfs_free_space_header *h, | |
0af3d00b JB |
2038 | struct btrfs_disk_key *key) |
2039 | { | |
2040 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2041 | } | |
2042 | ||
2043 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
2044 | struct btrfs_free_space_header *h, | |
1cbb1f45 | 2045 | const struct btrfs_disk_key *key) |
0af3d00b JB |
2046 | { |
2047 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2048 | } | |
2049 | ||
5f39d397 CM |
2050 | /* struct btrfs_disk_key */ |
2051 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2052 | objectid, 64); | |
2053 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2054 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2055 | |
e2fa7227 | 2056 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
310712b2 | 2057 | const struct btrfs_disk_key *disk) |
e2fa7227 CM |
2058 | { |
2059 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2060 | cpu->type = disk->type; |
e2fa7227 CM |
2061 | cpu->objectid = le64_to_cpu(disk->objectid); |
2062 | } | |
2063 | ||
2064 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
310712b2 | 2065 | const struct btrfs_key *cpu) |
e2fa7227 CM |
2066 | { |
2067 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2068 | disk->type = cpu->type; |
e2fa7227 CM |
2069 | disk->objectid = cpu_to_le64(cpu->objectid); |
2070 | } | |
2071 | ||
1cbb1f45 JM |
2072 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, |
2073 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2074 | { |
5f39d397 CM |
2075 | struct btrfs_disk_key disk_key; |
2076 | btrfs_node_key(eb, &disk_key, nr); | |
2077 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2078 | } |
2079 | ||
1cbb1f45 JM |
2080 | static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb, |
2081 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2082 | { |
5f39d397 CM |
2083 | struct btrfs_disk_key disk_key; |
2084 | btrfs_item_key(eb, &disk_key, nr); | |
2085 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2086 | } |
2087 | ||
1cbb1f45 JM |
2088 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, |
2089 | const struct btrfs_dir_item *item, | |
2090 | struct btrfs_key *key) | |
4d775673 | 2091 | { |
5f39d397 CM |
2092 | struct btrfs_disk_key disk_key; |
2093 | btrfs_dir_item_key(eb, item, &disk_key); | |
2094 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2095 | } |
2096 | ||
310712b2 | 2097 | static inline u8 btrfs_key_type(const struct btrfs_key *key) |
3768f368 | 2098 | { |
5f39d397 | 2099 | return key->type; |
3768f368 CM |
2100 | } |
2101 | ||
5f39d397 | 2102 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2103 | { |
5f39d397 | 2104 | key->type = val; |
3768f368 CM |
2105 | } |
2106 | ||
5f39d397 | 2107 | /* struct btrfs_header */ |
db94535d | 2108 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2109 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2110 | generation, 64); | |
2111 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2112 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2113 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2114 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2115 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2116 | generation, 64); | |
2117 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2118 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2119 | nritems, 32); | |
2120 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2121 | |
1cbb1f45 | 2122 | static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag) |
63b10fc4 CM |
2123 | { |
2124 | return (btrfs_header_flags(eb) & flag) == flag; | |
2125 | } | |
2126 | ||
2127 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2128 | { | |
2129 | u64 flags = btrfs_header_flags(eb); | |
2130 | btrfs_set_header_flags(eb, flags | flag); | |
2131 | return (flags & flag) == flag; | |
2132 | } | |
2133 | ||
2134 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2135 | { | |
2136 | u64 flags = btrfs_header_flags(eb); | |
2137 | btrfs_set_header_flags(eb, flags & ~flag); | |
2138 | return (flags & flag) == flag; | |
2139 | } | |
2140 | ||
1cbb1f45 | 2141 | static inline int btrfs_header_backref_rev(const struct extent_buffer *eb) |
5d4f98a2 YZ |
2142 | { |
2143 | u64 flags = btrfs_header_flags(eb); | |
2144 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2145 | } | |
2146 | ||
2147 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2148 | int rev) | |
2149 | { | |
2150 | u64 flags = btrfs_header_flags(eb); | |
2151 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2152 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2153 | btrfs_set_header_flags(eb, flags); | |
2154 | } | |
2155 | ||
0a4e5586 | 2156 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2157 | { |
fba6aa75 | 2158 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2159 | } |
2160 | ||
1cbb1f45 | 2161 | static inline unsigned long btrfs_header_chunk_tree_uuid(const struct extent_buffer *eb) |
e17cade2 | 2162 | { |
b308bc2f | 2163 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2164 | } |
2165 | ||
1cbb1f45 | 2166 | static inline int btrfs_is_leaf(const struct extent_buffer *eb) |
3768f368 | 2167 | { |
d397712b | 2168 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2169 | } |
2170 | ||
5f39d397 | 2171 | /* struct btrfs_root_item */ |
84234f3a YZ |
2172 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2173 | generation, 64); | |
5f39d397 | 2174 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2175 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2176 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2177 | |
84234f3a YZ |
2178 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2179 | generation, 64); | |
db94535d CM |
2180 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2181 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2182 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2183 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2184 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2185 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2186 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2187 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2188 | last_snapshot, 64); | |
8ea05e3a AB |
2189 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2190 | generation_v2, 64); | |
2191 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2192 | ctransid, 64); | |
2193 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2194 | otransid, 64); | |
2195 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2196 | stransid, 64); | |
2197 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2198 | rtransid, 64); | |
123abc88 | 2199 | |
1cbb1f45 | 2200 | static inline bool btrfs_root_readonly(const struct btrfs_root *root) |
b83cc969 | 2201 | { |
6ed3cf2c | 2202 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2203 | } |
2204 | ||
1cbb1f45 | 2205 | static inline bool btrfs_root_dead(const struct btrfs_root *root) |
521e0546 DS |
2206 | { |
2207 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2208 | } | |
2209 | ||
af31f5e5 CM |
2210 | /* struct btrfs_root_backup */ |
2211 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2212 | tree_root, 64); | |
2213 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2214 | tree_root_gen, 64); | |
2215 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2216 | tree_root_level, 8); | |
2217 | ||
2218 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2219 | chunk_root, 64); | |
2220 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2221 | chunk_root_gen, 64); | |
2222 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2223 | chunk_root_level, 8); | |
2224 | ||
2225 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2226 | extent_root, 64); | |
2227 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2228 | extent_root_gen, 64); | |
2229 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2230 | extent_root_level, 8); | |
2231 | ||
2232 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2233 | fs_root, 64); | |
2234 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2235 | fs_root_gen, 64); | |
2236 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2237 | fs_root_level, 8); | |
2238 | ||
2239 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2240 | dev_root, 64); | |
2241 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2242 | dev_root_gen, 64); | |
2243 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2244 | dev_root_level, 8); | |
2245 | ||
2246 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2247 | csum_root, 64); | |
2248 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2249 | csum_root_gen, 64); | |
2250 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2251 | csum_root_level, 8); | |
2252 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2253 | total_bytes, 64); | |
2254 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2255 | bytes_used, 64); | |
2256 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2257 | num_devices, 64); | |
2258 | ||
0940ebf6 ID |
2259 | /* struct btrfs_balance_item */ |
2260 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2261 | |
1cbb1f45 JM |
2262 | static inline void btrfs_balance_data(const struct extent_buffer *eb, |
2263 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2264 | struct btrfs_disk_balance_args *ba) |
2265 | { | |
2266 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2267 | } | |
2268 | ||
2269 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
1cbb1f45 JM |
2270 | struct btrfs_balance_item *bi, |
2271 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2272 | { |
2273 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2274 | } | |
2275 | ||
1cbb1f45 JM |
2276 | static inline void btrfs_balance_meta(const struct extent_buffer *eb, |
2277 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2278 | struct btrfs_disk_balance_args *ba) |
2279 | { | |
2280 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2281 | } | |
2282 | ||
2283 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
1cbb1f45 JM |
2284 | struct btrfs_balance_item *bi, |
2285 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2286 | { |
2287 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2288 | } | |
2289 | ||
1cbb1f45 JM |
2290 | static inline void btrfs_balance_sys(const struct extent_buffer *eb, |
2291 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2292 | struct btrfs_disk_balance_args *ba) |
2293 | { | |
2294 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2295 | } | |
2296 | ||
2297 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
1cbb1f45 JM |
2298 | struct btrfs_balance_item *bi, |
2299 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2300 | { |
2301 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2302 | } | |
2303 | ||
2304 | static inline void | |
2305 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
1cbb1f45 | 2306 | const struct btrfs_disk_balance_args *disk) |
0940ebf6 ID |
2307 | { |
2308 | memset(cpu, 0, sizeof(*cpu)); | |
2309 | ||
2310 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2311 | cpu->usage = le64_to_cpu(disk->usage); | |
2312 | cpu->devid = le64_to_cpu(disk->devid); | |
2313 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2314 | cpu->pend = le64_to_cpu(disk->pend); | |
2315 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2316 | cpu->vend = le64_to_cpu(disk->vend); | |
2317 | cpu->target = le64_to_cpu(disk->target); | |
2318 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2319 | cpu->limit = le64_to_cpu(disk->limit); |
ed0df618 DS |
2320 | cpu->stripes_min = le32_to_cpu(disk->stripes_min); |
2321 | cpu->stripes_max = le32_to_cpu(disk->stripes_max); | |
0940ebf6 ID |
2322 | } |
2323 | ||
2324 | static inline void | |
2325 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
1cbb1f45 | 2326 | const struct btrfs_balance_args *cpu) |
0940ebf6 ID |
2327 | { |
2328 | memset(disk, 0, sizeof(*disk)); | |
2329 | ||
2330 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2331 | disk->usage = cpu_to_le64(cpu->usage); | |
2332 | disk->devid = cpu_to_le64(cpu->devid); | |
2333 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2334 | disk->pend = cpu_to_le64(cpu->pend); | |
2335 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2336 | disk->vend = cpu_to_le64(cpu->vend); | |
2337 | disk->target = cpu_to_le64(cpu->target); | |
2338 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2339 | disk->limit = cpu_to_le64(cpu->limit); |
ed0df618 DS |
2340 | disk->stripes_min = cpu_to_le32(cpu->stripes_min); |
2341 | disk->stripes_max = cpu_to_le32(cpu->stripes_max); | |
0940ebf6 ID |
2342 | } |
2343 | ||
2344 | /* struct btrfs_super_block */ | |
db94535d | 2345 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2346 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2347 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2348 | generation, 64); | |
2349 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2350 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2351 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2352 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2353 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2354 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2355 | root_level, 8); | |
0b86a832 CM |
2356 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2357 | chunk_root, 64); | |
2358 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2359 | chunk_root_level, 8); |
2360 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2361 | log_root, 64); | |
c3027eb5 CM |
2362 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2363 | log_root_transid, 64); | |
e02119d5 CM |
2364 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2365 | log_root_level, 8); | |
db94535d CM |
2366 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2367 | total_bytes, 64); | |
2368 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2369 | bytes_used, 64); | |
5f39d397 CM |
2370 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2371 | sectorsize, 32); | |
2372 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2373 | nodesize, 32); | |
87ee04eb CM |
2374 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2375 | stripesize, 32); | |
5f39d397 CM |
2376 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2377 | root_dir_objectid, 64); | |
8a4b83cc CM |
2378 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2379 | num_devices, 64); | |
f2b636e8 JB |
2380 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2381 | compat_flags, 64); | |
2382 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2383 | compat_ro_flags, 64); |
f2b636e8 JB |
2384 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2385 | incompat_flags, 64); | |
607d432d JB |
2386 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2387 | csum_type, 16); | |
0af3d00b JB |
2388 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2389 | cache_generation, 64); | |
3cae210f | 2390 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2391 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2392 | uuid_tree_generation, 64); | |
607d432d | 2393 | |
1cbb1f45 | 2394 | static inline int btrfs_super_csum_size(const struct btrfs_super_block *s) |
607d432d | 2395 | { |
1104a885 DS |
2396 | u16 t = btrfs_super_csum_type(s); |
2397 | /* | |
2398 | * csum type is validated at mount time | |
2399 | */ | |
607d432d JB |
2400 | return btrfs_csum_sizes[t]; |
2401 | } | |
2e635a27 | 2402 | |
2e635a27 | 2403 | |
851cd173 LB |
2404 | /* |
2405 | * The leaf data grows from end-to-front in the node. | |
2406 | * this returns the address of the start of the last item, | |
2407 | * which is the stop of the leaf data stack | |
2408 | */ | |
1cbb1f45 JM |
2409 | static inline unsigned int leaf_data_end(const struct btrfs_fs_info *fs_info, |
2410 | const struct extent_buffer *leaf) | |
851cd173 LB |
2411 | { |
2412 | u32 nr = btrfs_header_nritems(leaf); | |
2413 | ||
2414 | if (nr == 0) | |
0b246afa | 2415 | return BTRFS_LEAF_DATA_SIZE(fs_info); |
851cd173 LB |
2416 | return btrfs_item_offset_nr(leaf, nr - 1); |
2417 | } | |
2418 | ||
5f39d397 CM |
2419 | /* struct btrfs_file_extent_item */ |
2420 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2421 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2422 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2423 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2424 | struct btrfs_file_extent_item, offset, 64); | |
2425 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2426 | struct btrfs_file_extent_item, generation, 64); | |
2427 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2428 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2429 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2430 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2431 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2432 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2433 | |
d397712b | 2434 | static inline unsigned long |
1cbb1f45 | 2435 | btrfs_file_extent_inline_start(const struct btrfs_file_extent_item *e) |
236454df | 2436 | { |
7ec20afb | 2437 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2438 | } |
2439 | ||
2440 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2441 | { | |
7ec20afb | 2442 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2443 | } |
2444 | ||
db94535d CM |
2445 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2446 | disk_bytenr, 64); | |
5f39d397 CM |
2447 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2448 | generation, 64); | |
db94535d CM |
2449 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2450 | disk_num_bytes, 64); | |
5f39d397 CM |
2451 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2452 | offset, 64); | |
db94535d CM |
2453 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2454 | num_bytes, 64); | |
c8b97818 CM |
2455 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2456 | ram_bytes, 64); | |
2457 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2458 | compression, 8); | |
2459 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2460 | encryption, 8); | |
2461 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2462 | other_encoding, 16); | |
2463 | ||
c8b97818 CM |
2464 | /* |
2465 | * this returns the number of bytes used by the item on disk, minus the | |
2466 | * size of any extent headers. If a file is compressed on disk, this is | |
2467 | * the compressed size | |
2468 | */ | |
1cbb1f45 JM |
2469 | static inline u32 btrfs_file_extent_inline_item_len( |
2470 | const struct extent_buffer *eb, | |
2471 | struct btrfs_item *e) | |
c8b97818 | 2472 | { |
7ec20afb | 2473 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2474 | } |
9f5fae2f | 2475 | |
733f4fbb | 2476 | /* btrfs_dev_stats_item */ |
1cbb1f45 JM |
2477 | static inline u64 btrfs_dev_stats_value(const struct extent_buffer *eb, |
2478 | const struct btrfs_dev_stats_item *ptr, | |
733f4fbb SB |
2479 | int index) |
2480 | { | |
2481 | u64 val; | |
2482 | ||
2483 | read_extent_buffer(eb, &val, | |
2484 | offsetof(struct btrfs_dev_stats_item, values) + | |
2485 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2486 | sizeof(val)); | |
2487 | return val; | |
2488 | } | |
2489 | ||
2490 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2491 | struct btrfs_dev_stats_item *ptr, | |
2492 | int index, u64 val) | |
2493 | { | |
2494 | write_extent_buffer(eb, &val, | |
2495 | offsetof(struct btrfs_dev_stats_item, values) + | |
2496 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2497 | sizeof(val)); | |
2498 | } | |
2499 | ||
630dc772 AJ |
2500 | /* btrfs_qgroup_status_item */ |
2501 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2502 | generation, 64); | |
2503 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2504 | version, 64); | |
2505 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2506 | flags, 64); | |
2f232036 JS |
2507 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2508 | rescan, 64); | |
630dc772 AJ |
2509 | |
2510 | /* btrfs_qgroup_info_item */ | |
2511 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2512 | generation, 64); | |
2513 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2514 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2515 | rfer_cmpr, 64); | |
2516 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2517 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2518 | excl_cmpr, 64); | |
2519 | ||
2520 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2521 | struct btrfs_qgroup_info_item, generation, 64); | |
2522 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2523 | rfer, 64); | |
2524 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2525 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2526 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2527 | excl, 64); | |
2528 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2529 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2530 | ||
2531 | /* btrfs_qgroup_limit_item */ | |
2532 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2533 | flags, 64); | |
2534 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2535 | max_rfer, 64); | |
2536 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2537 | max_excl, 64); | |
2538 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2539 | rsv_rfer, 64); | |
2540 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2541 | rsv_excl, 64); | |
2542 | ||
a2bff640 SB |
2543 | /* btrfs_dev_replace_item */ |
2544 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2545 | struct btrfs_dev_replace_item, src_devid, 64); | |
2546 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2547 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2548 | 64); | |
2549 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2550 | replace_state, 64); | |
2551 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2552 | time_started, 64); | |
2553 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2554 | time_stopped, 64); | |
2555 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2556 | num_write_errors, 64); | |
2557 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2558 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2559 | 64); | |
2560 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2561 | cursor_left, 64); | |
2562 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2563 | cursor_right, 64); | |
2564 | ||
2565 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2566 | struct btrfs_dev_replace_item, src_devid, 64); | |
2567 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2568 | struct btrfs_dev_replace_item, | |
2569 | cont_reading_from_srcdev_mode, 64); | |
2570 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2571 | struct btrfs_dev_replace_item, replace_state, 64); | |
2572 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2573 | struct btrfs_dev_replace_item, time_started, 64); | |
2574 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2575 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2576 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2577 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2578 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2579 | struct btrfs_dev_replace_item, | |
2580 | num_uncorrectable_read_errors, 64); | |
2581 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2582 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2583 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2584 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2585 | ||
4beb1b8b CM |
2586 | /* helper function to cast into the data area of the leaf. */ |
2587 | #define btrfs_item_ptr(leaf, slot, type) \ | |
3d9ec8c4 | 2588 | ((type *)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 CM |
2589 | btrfs_item_offset_nr(leaf, slot))) |
2590 | ||
2591 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
3d9ec8c4 | 2592 | ((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 | 2593 | btrfs_item_offset_nr(leaf, slot))) |
4beb1b8b | 2594 | |
9678c543 NB |
2595 | static inline u64 btrfs_name_hash(const char *name, int len) |
2596 | { | |
2597 | return crc32c((u32)~1, name, len); | |
2598 | } | |
2599 | ||
2600 | /* | |
2601 | * Figure the key offset of an extended inode ref | |
2602 | */ | |
2603 | static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name, | |
2604 | int len) | |
2605 | { | |
2606 | return (u64) crc32c(parent_objectid, name, len); | |
2607 | } | |
2608 | ||
67377734 JB |
2609 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2610 | { | |
2611 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2612 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2613 | } | |
2614 | ||
3b16a4e3 JB |
2615 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2616 | { | |
c62d2555 | 2617 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2618 | } |
2619 | ||
b18c6685 | 2620 | /* extent-tree.c */ |
28f75a0e | 2621 | |
167ce953 LB |
2622 | enum btrfs_inline_ref_type { |
2623 | BTRFS_REF_TYPE_INVALID = 0, | |
2624 | BTRFS_REF_TYPE_BLOCK = 1, | |
2625 | BTRFS_REF_TYPE_DATA = 2, | |
2626 | BTRFS_REF_TYPE_ANY = 3, | |
2627 | }; | |
2628 | ||
2629 | int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb, | |
2630 | struct btrfs_extent_inline_ref *iref, | |
2631 | enum btrfs_inline_ref_type is_data); | |
2632 | ||
2ff7e61e | 2633 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_fs_info *fs_info, u64 csum_bytes); |
28f75a0e | 2634 | |
27965b6c | 2635 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_fs_info *fs_info, |
9e0baf60 | 2636 | unsigned num_items) |
16cdcec7 | 2637 | { |
70e7af24 | 2638 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2639 | } |
2640 | ||
2641 | /* | |
2642 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2643 | * COW. | |
2644 | */ | |
27965b6c | 2645 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info, |
07127184 JB |
2646 | unsigned num_items) |
2647 | { | |
70e7af24 | 2648 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2649 | } |
2650 | ||
7c861627 | 2651 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans); |
af9b8a0e | 2652 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans); |
9cfa3e34 FM |
2653 | void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, |
2654 | const u64 start); | |
2655 | void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); | |
f78c436c FM |
2656 | bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
2657 | void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); | |
2658 | void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg); | |
fa9c0d79 | 2659 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 | 2660 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
c79a70b1 | 2661 | unsigned long count); |
2ff7e61e | 2662 | int btrfs_async_run_delayed_refs(struct btrfs_fs_info *fs_info, |
31b9655f | 2663 | unsigned long count, u64 transid, int wait); |
2ff7e61e | 2664 | int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len); |
a22285a6 | 2665 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2ff7e61e | 2666 | struct btrfs_fs_info *fs_info, u64 bytenr, |
3173a18f | 2667 | u64 offset, int metadata, u64 *refs, u64 *flags); |
2ff7e61e | 2668 | int btrfs_pin_extent(struct btrfs_fs_info *fs_info, |
11833d66 | 2669 | u64 bytenr, u64 num, int reserved); |
2ff7e61e | 2670 | int btrfs_pin_extent_for_log_replay(struct btrfs_fs_info *fs_info, |
e688b725 | 2671 | u64 bytenr, u64 num_bytes); |
2ff7e61e | 2672 | int btrfs_exclude_logged_extents(struct btrfs_fs_info *fs_info, |
8c2a1a30 | 2673 | struct extent_buffer *eb); |
e4c3b2dc | 2674 | int btrfs_cross_ref_exist(struct btrfs_root *root, |
5d4f98a2 | 2675 | u64 objectid, u64 offset, u64 bytenr); |
d397712b CM |
2676 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2677 | struct btrfs_fs_info *info, | |
2678 | u64 bytenr); | |
758f2dfc | 2679 | void btrfs_get_block_group(struct btrfs_block_group_cache *cache); |
5d4f98a2 | 2680 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
4d75f8a9 | 2681 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
310712b2 OS |
2682 | struct btrfs_root *root, |
2683 | u64 parent, u64 root_objectid, | |
2684 | const struct btrfs_disk_key *key, | |
2685 | int level, u64 hint, | |
2686 | u64 empty_size); | |
f0486c68 YZ |
2687 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2688 | struct btrfs_root *root, | |
2689 | struct extent_buffer *buf, | |
5581a51a | 2690 | u64 parent, int last_ref); |
5d4f98a2 | 2691 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2692 | struct btrfs_root *root, u64 owner, |
5846a3c2 QW |
2693 | u64 offset, u64 ram_bytes, |
2694 | struct btrfs_key *ins); | |
5d4f98a2 | 2695 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2696 | u64 root_objectid, u64 owner, u64 offset, |
2697 | struct btrfs_key *ins); | |
18513091 | 2698 | int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, |
00361589 | 2699 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
e570fd27 | 2700 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2701 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2702 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2703 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2704 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2705 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2ff7e61e | 2706 | struct btrfs_fs_info *fs_info, |
5d4f98a2 | 2707 | u64 bytenr, u64 num_bytes, u64 flags, |
b1c79e09 | 2708 | int level, int is_data); |
31840ae1 | 2709 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2710 | struct btrfs_root *root, |
66d7e7f0 | 2711 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
b06c4bf5 | 2712 | u64 owner, u64 offset); |
5d4f98a2 | 2713 | |
2ff7e61e JM |
2714 | int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info, |
2715 | u64 start, u64 len, int delalloc); | |
2716 | int btrfs_free_and_pin_reserved_extent(struct btrfs_fs_info *fs_info, | |
e688b725 | 2717 | u64 start, u64 len); |
8b74c03e | 2718 | void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info); |
5ead2dd0 | 2719 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans); |
b18c6685 | 2720 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2721 | struct btrfs_root *root, |
31840ae1 | 2722 | u64 bytenr, u64 num_bytes, u64 parent, |
b06c4bf5 | 2723 | u64 root_objectid, u64 owner, u64 offset); |
5d4f98a2 | 2724 | |
21217054 | 2725 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans); |
9078a3e1 | 2726 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2ff7e61e | 2727 | struct btrfs_fs_info *fs_info); |
dcdf7f6d | 2728 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
2ff7e61e JM |
2729 | struct btrfs_fs_info *fs_info); |
2730 | int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr); | |
9078a3e1 | 2731 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
5b4aacef | 2732 | int btrfs_read_block_groups(struct btrfs_fs_info *info); |
6bccf3ab | 2733 | int btrfs_can_relocate(struct btrfs_fs_info *fs_info, u64 bytenr); |
0b86a832 | 2734 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
e7e02096 NB |
2735 | u64 bytes_used, u64 type, u64 chunk_offset, |
2736 | u64 size); | |
75cb379d | 2737 | void btrfs_add_raid_kobjects(struct btrfs_fs_info *fs_info); |
8eab77ff | 2738 | struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( |
7fd01182 FM |
2739 | struct btrfs_fs_info *fs_info, |
2740 | const u64 chunk_offset); | |
1a40e23b | 2741 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
5a98ec01 | 2742 | u64 group_start, struct extent_map *em); |
47ab2a6c | 2743 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
e33e17ee JM |
2744 | void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); |
2745 | void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); | |
6c686b35 | 2746 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans); |
1b86826d JM |
2747 | u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info); |
2748 | u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info); | |
2749 | u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info); | |
4184ea7f | 2750 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
2751 | |
2752 | enum btrfs_reserve_flush_enum { | |
2753 | /* If we are in the transaction, we can't flush anything.*/ | |
2754 | BTRFS_RESERVE_NO_FLUSH, | |
2755 | /* | |
2756 | * Flushing delalloc may cause deadlock somewhere, in this | |
2757 | * case, use FLUSH LIMIT | |
2758 | */ | |
2759 | BTRFS_RESERVE_FLUSH_LIMIT, | |
2760 | BTRFS_RESERVE_FLUSH_ALL, | |
2761 | }; | |
2762 | ||
f376df2b JB |
2763 | enum btrfs_flush_state { |
2764 | FLUSH_DELAYED_ITEMS_NR = 1, | |
2765 | FLUSH_DELAYED_ITEMS = 2, | |
2766 | FLUSH_DELALLOC = 3, | |
2767 | FLUSH_DELALLOC_WAIT = 4, | |
2768 | ALLOC_CHUNK = 5, | |
2769 | COMMIT_TRANS = 6, | |
2770 | }; | |
2771 | ||
04f4f916 | 2772 | int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes); |
364ecf36 QW |
2773 | int btrfs_check_data_free_space(struct inode *inode, |
2774 | struct extent_changeset **reserved, u64 start, u64 len); | |
bc42bda2 QW |
2775 | void btrfs_free_reserved_data_space(struct inode *inode, |
2776 | struct extent_changeset *reserved, u64 start, u64 len); | |
2777 | void btrfs_delalloc_release_space(struct inode *inode, | |
43b18595 QW |
2778 | struct extent_changeset *reserved, |
2779 | u64 start, u64 len, bool qgroup_free); | |
51773bec QW |
2780 | void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, |
2781 | u64 len); | |
4fbcdf66 | 2782 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
d5c12070 MX |
2783 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2784 | struct btrfs_block_rsv *rsv, | |
c4c129db | 2785 | int nitems, bool use_global_rsv); |
2ff7e61e | 2786 | void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info, |
7775c818 | 2787 | struct btrfs_block_rsv *rsv); |
43b18595 QW |
2788 | void btrfs_delalloc_release_extents(struct btrfs_inode *inode, u64 num_bytes, |
2789 | bool qgroup_free); | |
8b62f87b | 2790 | |
9f3db423 | 2791 | int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes); |
43b18595 QW |
2792 | void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes, |
2793 | bool qgroup_free); | |
364ecf36 QW |
2794 | int btrfs_delalloc_reserve_space(struct inode *inode, |
2795 | struct extent_changeset **reserved, u64 start, u64 len); | |
66d8f3dd | 2796 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
2ff7e61e | 2797 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info, |
66d8f3dd | 2798 | unsigned short type); |
69fe2d75 JB |
2799 | void btrfs_init_metadata_block_rsv(struct btrfs_fs_info *fs_info, |
2800 | struct btrfs_block_rsv *rsv, | |
2801 | unsigned short type); | |
2ff7e61e | 2802 | void btrfs_free_block_rsv(struct btrfs_fs_info *fs_info, |
f0486c68 | 2803 | struct btrfs_block_rsv *rsv); |
4a92b1b8 | 2804 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
2805 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
2806 | enum btrfs_reserve_flush_enum flush); | |
2ff7e61e | 2807 | int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_factor); |
36ba022a | 2808 | int btrfs_block_rsv_refill(struct btrfs_root *root, |
08e007d2 MX |
2809 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
2810 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 | 2811 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
25d609f8 | 2812 | struct btrfs_block_rsv *dst_rsv, u64 num_bytes, |
3a584174 | 2813 | bool update_size); |
d52be818 JB |
2814 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
2815 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
2816 | int min_factor); | |
2ff7e61e | 2817 | void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info, |
f0486c68 YZ |
2818 | struct btrfs_block_rsv *block_rsv, |
2819 | u64 num_bytes); | |
c83488af | 2820 | int btrfs_inc_block_group_ro(struct btrfs_block_group_cache *cache); |
2ff7e61e | 2821 | void btrfs_dec_block_group_ro(struct btrfs_block_group_cache *cache); |
0af3d00b | 2822 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2823 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
2ff7e61e | 2824 | int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, |
acce952b | 2825 | u64 start, u64 end); |
2ff7e61e | 2826 | int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, |
1edb647b | 2827 | u64 num_bytes, u64 *actual_bytes); |
43a7e99d | 2828 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, u64 type); |
2ff7e61e | 2829 | int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range); |
acce952b | 2830 | |
c59021f8 | 2831 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2832 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2833 | struct btrfs_fs_info *fs_info); | |
ea14b57f DS |
2834 | int btrfs_start_write_no_snapshotting(struct btrfs_root *root); |
2835 | void btrfs_end_write_no_snapshotting(struct btrfs_root *root); | |
0bc19f90 | 2836 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
451a2c13 | 2837 | void check_system_chunk(struct btrfs_trans_handle *trans, const u64 type); |
a5ed9182 | 2838 | u64 add_new_free_space(struct btrfs_block_group_cache *block_group, |
4457c1c7 | 2839 | u64 start, u64 end); |
031f24da | 2840 | void btrfs_mark_bg_unused(struct btrfs_block_group_cache *bg); |
a5ed9182 | 2841 | |
dee26a9f | 2842 | /* ctree.c */ |
310712b2 | 2843 | int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key, |
5d4f98a2 | 2844 | int level, int *slot); |
310712b2 | 2845 | int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2); |
0b86a832 CM |
2846 | int btrfs_previous_item(struct btrfs_root *root, |
2847 | struct btrfs_path *path, u64 min_objectid, | |
2848 | int type); | |
ade2e0b3 WS |
2849 | int btrfs_previous_extent_item(struct btrfs_root *root, |
2850 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
2851 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
2852 | struct btrfs_path *path, | |
310712b2 | 2853 | const struct btrfs_key *new_key); |
925baedd CM |
2854 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2855 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
84f7d8e6 | 2856 | struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root); |
e7a84565 | 2857 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 2858 | struct btrfs_key *key, int lowest_level, |
de78b51a | 2859 | u64 min_trans); |
3f157a2f | 2860 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 2861 | struct btrfs_path *path, |
3f157a2f | 2862 | u64 min_trans); |
7069830a AB |
2863 | enum btrfs_compare_tree_result { |
2864 | BTRFS_COMPARE_TREE_NEW, | |
2865 | BTRFS_COMPARE_TREE_DELETED, | |
2866 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 2867 | BTRFS_COMPARE_TREE_SAME, |
7069830a | 2868 | }; |
ee8c494f | 2869 | typedef int (*btrfs_changed_cb_t)(struct btrfs_path *left_path, |
7069830a AB |
2870 | struct btrfs_path *right_path, |
2871 | struct btrfs_key *key, | |
2872 | enum btrfs_compare_tree_result result, | |
2873 | void *ctx); | |
2874 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
2875 | struct btrfs_root *right_root, | |
2876 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
2877 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2878 | struct btrfs_root *root, struct extent_buffer *buf, | |
2879 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2880 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2881 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2882 | struct btrfs_root *root, | |
2883 | struct extent_buffer *buf, | |
2884 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2885 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2886 | struct extent_buffer *buf); | |
2ff7e61e | 2887 | void btrfs_extend_item(struct btrfs_fs_info *fs_info, struct btrfs_path *path, |
143bede5 | 2888 | u32 data_size); |
2ff7e61e JM |
2889 | void btrfs_truncate_item(struct btrfs_fs_info *fs_info, |
2890 | struct btrfs_path *path, u32 new_size, int from_end); | |
459931ec CM |
2891 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2892 | struct btrfs_root *root, | |
2893 | struct btrfs_path *path, | |
310712b2 | 2894 | const struct btrfs_key *new_key, |
459931ec | 2895 | unsigned long split_offset); |
ad48fd75 YZ |
2896 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2897 | struct btrfs_root *root, | |
2898 | struct btrfs_path *path, | |
310712b2 | 2899 | const struct btrfs_key *new_key); |
e33d5c3d KN |
2900 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
2901 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
310712b2 OS |
2902 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2903 | const struct btrfs_key *key, struct btrfs_path *p, | |
2904 | int ins_len, int cow); | |
2905 | int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key, | |
5d9e75c4 | 2906 | struct btrfs_path *p, u64 time_seq); |
2f38b3e1 | 2907 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
310712b2 OS |
2908 | const struct btrfs_key *key, |
2909 | struct btrfs_path *p, int find_higher, | |
2910 | int return_any); | |
6702ed49 | 2911 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2912 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 2913 | int start_slot, u64 *last_ret, |
a6b6e75e | 2914 | struct btrfs_key *progress); |
b3b4aa74 | 2915 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2916 | struct btrfs_path *btrfs_alloc_path(void); |
2917 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2918 | void btrfs_set_path_blocking(struct btrfs_path *p); |
b4ce94de CM |
2919 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2920 | ||
85e21bac CM |
2921 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2922 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2923 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2924 | struct btrfs_root *root, | |
2925 | struct btrfs_path *path) | |
2926 | { | |
2927 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2928 | } | |
2929 | ||
afe5fea7 | 2930 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
310712b2 | 2931 | const struct btrfs_key *cpu_key, u32 *data_size, |
143bede5 | 2932 | u32 total_data, u32 total_size, int nr); |
310712b2 OS |
2933 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2934 | const struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2935 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2936 | struct btrfs_root *root, | |
2937 | struct btrfs_path *path, | |
310712b2 OS |
2938 | const struct btrfs_key *cpu_key, u32 *data_size, |
2939 | int nr); | |
9c58309d CM |
2940 | |
2941 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2942 | struct btrfs_root *root, | |
2943 | struct btrfs_path *path, | |
310712b2 | 2944 | const struct btrfs_key *key, |
9c58309d CM |
2945 | u32 data_size) |
2946 | { | |
2947 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2948 | } | |
2949 | ||
234b63a0 | 2950 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 2951 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2952 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2953 | u64 time_seq); | |
1c8f52a5 AB |
2954 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2955 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2956 | { |
2957 | ++p->slots[0]; | |
2958 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2959 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2960 | return 0; |
2961 | } | |
1c8f52a5 AB |
2962 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2963 | { | |
2964 | return btrfs_next_old_item(root, p, 0); | |
2965 | } | |
2ff7e61e JM |
2966 | int btrfs_leaf_free_space(struct btrfs_fs_info *fs_info, |
2967 | struct extent_buffer *leaf); | |
2c536799 JM |
2968 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
2969 | struct btrfs_block_rsv *block_rsv, | |
2970 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
2971 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2972 | struct btrfs_root *root, | |
2973 | struct extent_buffer *node, | |
2974 | struct extent_buffer *parent); | |
7841cb28 DS |
2975 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2976 | { | |
2977 | /* | |
afcdd129 | 2978 | * Do it this way so we only ever do one test_bit in the normal case. |
7841cb28 | 2979 | */ |
afcdd129 JB |
2980 | if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) { |
2981 | if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags)) | |
2982 | return 2; | |
2983 | return 1; | |
2984 | } | |
2985 | return 0; | |
7841cb28 | 2986 | } |
babbf170 MX |
2987 | |
2988 | /* | |
2989 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
2990 | * anything except sleeping. This function is used to check the status of | |
2991 | * the fs. | |
2992 | */ | |
2ff7e61e | 2993 | static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info) |
babbf170 | 2994 | { |
1751e8a6 | 2995 | return fs_info->sb->s_flags & SB_RDONLY || btrfs_fs_closing(fs_info); |
babbf170 MX |
2996 | } |
2997 | ||
6c41761f DS |
2998 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
2999 | { | |
837d5b6e | 3000 | kfree(fs_info->balance_ctl); |
6c41761f DS |
3001 | kfree(fs_info->delayed_root); |
3002 | kfree(fs_info->extent_root); | |
3003 | kfree(fs_info->tree_root); | |
3004 | kfree(fs_info->chunk_root); | |
3005 | kfree(fs_info->dev_root); | |
3006 | kfree(fs_info->csum_root); | |
bcef60f2 | 3007 | kfree(fs_info->quota_root); |
d8f98039 | 3008 | kfree(fs_info->uuid_root); |
70f6d82e | 3009 | kfree(fs_info->free_space_root); |
6c41761f DS |
3010 | kfree(fs_info->super_copy); |
3011 | kfree(fs_info->super_for_commit); | |
f667aef6 | 3012 | security_free_mnt_opts(&fs_info->security_opts); |
a8fd1f71 | 3013 | kvfree(fs_info); |
6c41761f | 3014 | } |
7841cb28 | 3015 | |
097b8a7c JS |
3016 | /* tree mod log functions from ctree.c */ |
3017 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3018 | struct seq_list *elem); | |
3019 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3020 | struct seq_list *elem); | |
5b6602e7 | 3021 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 3022 | |
dee26a9f | 3023 | /* root-item.c */ |
6025c19f LF |
3024 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, u64 root_id, |
3025 | u64 ref_id, u64 dirid, u64 sequence, const char *name, | |
3026 | int name_len); | |
3ee1c553 LF |
3027 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, u64 root_id, |
3028 | u64 ref_id, u64 dirid, u64 *sequence, const char *name, | |
3029 | int name_len); | |
1cd5447e | 3030 | int btrfs_del_root(struct btrfs_trans_handle *trans, |
ab9ce7d4 | 3031 | const struct btrfs_key *key); |
310712b2 OS |
3032 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3033 | const struct btrfs_key *key, | |
3034 | struct btrfs_root_item *item); | |
b45a9d8b JM |
3035 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
3036 | struct btrfs_root *root, | |
3037 | struct btrfs_key *key, | |
3038 | struct btrfs_root_item *item); | |
310712b2 | 3039 | int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key, |
cb517eab MX |
3040 | struct btrfs_path *path, struct btrfs_root_item *root_item, |
3041 | struct btrfs_key *root_key); | |
6bccf3ab | 3042 | int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info); |
bf5f32ec MF |
3043 | void btrfs_set_root_node(struct btrfs_root_item *item, |
3044 | struct extent_buffer *node); | |
08fe4db1 | 3045 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
3046 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
3047 | struct btrfs_root *root); | |
08fe4db1 | 3048 | |
07b30a49 | 3049 | /* uuid-tree.c */ |
cdb345a8 | 3050 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 3051 | u64 subid); |
d1957791 | 3052 | int btrfs_uuid_tree_remove(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 3053 | u64 subid); |
70f80175 SB |
3054 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
3055 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
3056 | u64)); | |
07b30a49 | 3057 | |
dee26a9f | 3058 | /* dir-item.c */ |
9c52057c CM |
3059 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
3060 | const char *name, int name_len); | |
684572df | 3061 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, const char *name, |
8e7611cf | 3062 | int name_len, struct btrfs_inode *dir, |
aec7477b | 3063 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3064 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3065 | struct btrfs_root *root, | |
3066 | struct btrfs_path *path, u64 dir, | |
3067 | const char *name, int name_len, | |
3068 | int mod); | |
3069 | struct btrfs_dir_item * | |
3070 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3071 | struct btrfs_root *root, | |
3072 | struct btrfs_path *path, u64 dir, | |
3073 | u64 objectid, const char *name, int name_len, | |
3074 | int mod); | |
4df27c4d YZ |
3075 | struct btrfs_dir_item * |
3076 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3077 | struct btrfs_path *path, u64 dirid, | |
3078 | const char *name, int name_len); | |
7e38180e CM |
3079 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3080 | struct btrfs_root *root, | |
3081 | struct btrfs_path *path, | |
3082 | struct btrfs_dir_item *di); | |
5103e947 | 3083 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3084 | struct btrfs_root *root, |
3085 | struct btrfs_path *path, u64 objectid, | |
3086 | const char *name, u16 name_len, | |
3087 | const void *data, u16 data_len); | |
5103e947 JB |
3088 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3089 | struct btrfs_root *root, | |
3090 | struct btrfs_path *path, u64 dir, | |
3091 | const char *name, u16 name_len, | |
3092 | int mod); | |
2ff7e61e | 3093 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info, |
5f5bc6b1 FM |
3094 | struct btrfs_path *path, |
3095 | const char *name, | |
3096 | int name_len); | |
7b128766 JB |
3097 | |
3098 | /* orphan.c */ | |
3099 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3100 | struct btrfs_root *root, u64 offset); | |
3101 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3102 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3103 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3104 | |
dee26a9f | 3105 | /* inode-item.c */ |
3954401f CM |
3106 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3107 | struct btrfs_root *root, | |
3108 | const char *name, int name_len, | |
aec7477b | 3109 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3110 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3111 | struct btrfs_root *root, | |
3112 | const char *name, int name_len, | |
aec7477b | 3113 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
3114 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3115 | struct btrfs_root *root, | |
3116 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3117 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3118 | *root, struct btrfs_path *path, |
3119 | struct btrfs_key *location, int mod); | |
dee26a9f | 3120 | |
f186373f MF |
3121 | struct btrfs_inode_extref * |
3122 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3123 | struct btrfs_root *root, | |
3124 | struct btrfs_path *path, | |
3125 | const char *name, int name_len, | |
3126 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3127 | int cow); | |
3128 | ||
1f250e92 FM |
3129 | int btrfs_find_name_in_backref(struct extent_buffer *leaf, int slot, |
3130 | const char *name, | |
3131 | int name_len, struct btrfs_inode_ref **ref_ret); | |
3132 | int btrfs_find_name_in_ext_backref(struct extent_buffer *leaf, int slot, | |
f186373f MF |
3133 | u64 ref_objectid, const char *name, |
3134 | int name_len, | |
3135 | struct btrfs_inode_extref **extref_ret); | |
3136 | ||
dee26a9f | 3137 | /* file-item.c */ |
facc8a22 | 3138 | struct btrfs_dio_private; |
459931ec | 3139 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
5b4aacef | 3140 | struct btrfs_fs_info *fs_info, u64 bytenr, u64 len); |
4e4cbee9 CH |
3141 | blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u32 *dst); |
3142 | blk_status_t btrfs_lookup_bio_sums_dio(struct inode *inode, struct bio *bio, | |
2ff7e61e | 3143 | u64 logical_offset); |
b18c6685 | 3144 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3145 | struct btrfs_root *root, |
3146 | u64 objectid, u64 pos, | |
3147 | u64 disk_offset, u64 disk_num_bytes, | |
3148 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3149 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3150 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3151 | struct btrfs_root *root, | |
3152 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3153 | u64 bytenr, int mod); |
065631f6 | 3154 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3155 | struct btrfs_root *root, |
e6dcd2dc | 3156 | struct btrfs_ordered_sum *sums); |
4e4cbee9 | 3157 | blk_status_t btrfs_csum_one_bio(struct inode *inode, struct bio *bio, |
2ff7e61e | 3158 | u64 file_start, int contig); |
a2de733c AJ |
3159 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3160 | struct list_head *list, int search_commit); | |
9cdc5124 | 3161 | void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode, |
7ffbb598 FM |
3162 | const struct btrfs_path *path, |
3163 | struct btrfs_file_extent_item *fi, | |
3164 | const bool new_inline, | |
3165 | struct extent_map *em); | |
3166 | ||
39279cc3 | 3167 | /* inode.c */ |
fc4f21b1 NB |
3168 | struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, |
3169 | struct page *page, size_t pg_offset, u64 start, | |
3170 | u64 len, int create); | |
00361589 | 3171 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3172 | u64 *orig_start, u64 *orig_block_len, |
3173 | u64 *ram_bytes); | |
4881ee5a | 3174 | |
2b877331 NB |
3175 | void __btrfs_del_delalloc_inode(struct btrfs_root *root, |
3176 | struct btrfs_inode *inode); | |
3de4586c | 3177 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
70ddc553 | 3178 | int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index); |
e02119d5 CM |
3179 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3180 | struct btrfs_root *root, | |
4ec5934e | 3181 | struct btrfs_inode *dir, struct btrfs_inode *inode, |
e02119d5 CM |
3182 | const char *name, int name_len); |
3183 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
db0a669f | 3184 | struct btrfs_inode *parent_inode, struct btrfs_inode *inode, |
e02119d5 | 3185 | const char *name, int name_len, int add_backref, u64 index); |
f60a2364 | 3186 | int btrfs_delete_subvolume(struct inode *dir, struct dentry *dentry); |
9703fefe | 3187 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
2aaa6655 | 3188 | int front); |
e02119d5 CM |
3189 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3190 | struct btrfs_root *root, | |
3191 | struct inode *inode, u64 new_size, | |
3192 | u32 min_type); | |
3193 | ||
3cd24c69 | 3194 | int btrfs_start_delalloc_snapshot(struct btrfs_root *root); |
82b3e53b | 3195 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int nr); |
2ac55d41 | 3196 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
e3b8a485 | 3197 | unsigned int extra_bits, |
ba8b04c1 | 3198 | struct extent_state **cached_state, int dedupe); |
d2fb3437 | 3199 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3200 | struct btrfs_root *new_root, |
3201 | struct btrfs_root *parent_root, | |
3202 | u64 new_dirid); | |
c629732d | 3203 | void btrfs_set_delalloc_extent(struct inode *inode, struct extent_state *state, |
e06a1fc9 | 3204 | unsigned *bits); |
a36bb5f9 NB |
3205 | void btrfs_clear_delalloc_extent(struct inode *inode, |
3206 | struct extent_state *state, unsigned *bits); | |
5c848198 NB |
3207 | void btrfs_merge_delalloc_extent(struct inode *inode, struct extent_state *new, |
3208 | struct extent_state *other); | |
abbb55f4 NB |
3209 | void btrfs_split_delalloc_extent(struct inode *inode, |
3210 | struct extent_state *orig, u64 split); | |
da12fe54 NB |
3211 | int btrfs_bio_fits_in_stripe(struct page *page, size_t size, struct bio *bio, |
3212 | unsigned long bio_flags); | |
5cdc84bf | 3213 | void btrfs_set_range_writeback(struct extent_io_tree *tree, u64 start, u64 end); |
a528a241 | 3214 | vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf); |
9ebefb18 | 3215 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3216 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3217 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3218 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3219 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3220 | int btrfs_drop_inode(struct inode *inode); |
f5c29bd9 | 3221 | int __init btrfs_init_cachep(void); |
e67c718b | 3222 | void __cold btrfs_destroy_cachep(void); |
4222ea71 FM |
3223 | struct inode *btrfs_iget_path(struct super_block *s, struct btrfs_key *location, |
3224 | struct btrfs_root *root, int *new, | |
3225 | struct btrfs_path *path); | |
1a54ef8c | 3226 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3227 | struct btrfs_root *root, int *was_new); |
fc4f21b1 | 3228 | struct extent_map *btrfs_get_extent(struct btrfs_inode *inode, |
de2c6615 LB |
3229 | struct page *page, size_t pg_offset, |
3230 | u64 start, u64 end, int create); | |
a52d9a80 CM |
3231 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
3232 | struct btrfs_root *root, | |
3233 | struct inode *inode); | |
be6aef60 JB |
3234 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3235 | struct btrfs_root *root, struct inode *inode); | |
73f2e545 NB |
3236 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, |
3237 | struct btrfs_inode *inode); | |
66b4ffd1 | 3238 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
a41ad394 | 3239 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
24bbcf04 | 3240 | void btrfs_add_delayed_iput(struct inode *inode); |
2ff7e61e | 3241 | void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info); |
efa56464 YZ |
3242 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3243 | u64 start, u64 num_bytes, u64 min_size, | |
3244 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3245 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3246 | struct btrfs_trans_handle *trans, int mode, | |
3247 | u64 start, u64 num_bytes, u64 min_size, | |
3248 | loff_t actual_len, u64 *alloc_hint); | |
5eaad97a NB |
3249 | int btrfs_run_delalloc_range(void *private_data, struct page *locked_page, |
3250 | u64 start, u64 end, int *page_started, unsigned long *nr_written, | |
3251 | struct writeback_control *wbc); | |
d75855b4 | 3252 | int btrfs_writepage_cow_fixup(struct page *page, u64 start, u64 end); |
7087a9d8 | 3253 | void btrfs_writepage_endio_finish_ordered(struct page *page, u64 start, |
c629732d | 3254 | u64 end, int uptodate); |
82d339d9 | 3255 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
3256 | |
3257 | /* ioctl.c */ | |
3258 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3259 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
d5131b65 | 3260 | int btrfs_ioctl_get_supported_features(void __user *arg); |
7b6a221e | 3261 | void btrfs_sync_inode_flags_to_i_flags(struct inode *inode); |
dd5f9615 | 3262 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3263 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3264 | struct btrfs_ioctl_defrag_range_args *range, | |
3265 | u64 newer_than, unsigned long max_pages); | |
008ef096 DS |
3266 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3267 | struct btrfs_ioctl_space_info *space); | |
3268 | void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info, | |
35a3621b SB |
3269 | struct btrfs_ioctl_balance_args *bargs); |
3270 | ||
39279cc3 | 3271 | /* file.c */ |
f5c29bd9 | 3272 | int __init btrfs_auto_defrag_init(void); |
e67c718b | 3273 | void __cold btrfs_auto_defrag_exit(void); |
4cb5300b | 3274 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
6158e1ce | 3275 | struct btrfs_inode *inode); |
4cb5300b | 3276 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
26176e7c | 3277 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3278 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
dcdbc059 | 3279 | void btrfs_drop_extent_cache(struct btrfs_inode *inode, u64 start, u64 end, |
7014cdb4 | 3280 | int skip_pinned); |
828c0950 | 3281 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3282 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3283 | struct btrfs_root *root, struct inode *inode, | |
3284 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3285 | u64 *drop_end, int drop_cache, |
3286 | int replace_extent, | |
3287 | u32 extent_item_size, | |
3288 | int *key_inserted); | |
5dc562c5 JB |
3289 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3290 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3291 | u64 end, int drop_cache); |
d899e052 | 3292 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
7a6d7067 | 3293 | struct btrfs_inode *inode, u64 start, u64 end); |
6bf13c0c | 3294 | int btrfs_release_file(struct inode *inode, struct file *file); |
2ff7e61e JM |
3295 | int btrfs_dirty_pages(struct inode *inode, struct page **pages, |
3296 | size_t num_pages, loff_t pos, size_t write_bytes, | |
be1a12a0 | 3297 | struct extent_state **cached); |
728404da | 3298 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
42ec3d4c DW |
3299 | loff_t btrfs_remap_file_range(struct file *file_in, loff_t pos_in, |
3300 | struct file *file_out, loff_t pos_out, | |
3301 | loff_t len, unsigned int remap_flags); | |
6bf13c0c | 3302 | |
6702ed49 CM |
3303 | /* tree-defrag.c */ |
3304 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3305 | struct btrfs_root *root); |
58176a96 JB |
3306 | |
3307 | /* sysfs.c */ | |
f5c29bd9 | 3308 | int __init btrfs_init_sysfs(void); |
e67c718b | 3309 | void __cold btrfs_exit_sysfs(void); |
96f3136e | 3310 | int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info); |
6618a59b | 3311 | void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info); |
58176a96 | 3312 | |
edbd8d4e | 3313 | /* super.c */ |
2ff7e61e | 3314 | int btrfs_parse_options(struct btrfs_fs_info *info, char *options, |
96da0919 | 3315 | unsigned long new_flags); |
6bf13c0c | 3316 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 | 3317 | |
e67c718b | 3318 | static inline __printf(2, 3) __cold |
2fd57fcb AB |
3319 | void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
3320 | { | |
3321 | } | |
3322 | ||
533574c6 JP |
3323 | #ifdef CONFIG_PRINTK |
3324 | __printf(2, 3) | |
e67c718b | 3325 | __cold |
c2cf52eb | 3326 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 | 3327 | #else |
2fd57fcb AB |
3328 | #define btrfs_printk(fs_info, fmt, args...) \ |
3329 | btrfs_no_printk(fs_info, fmt, ##args) | |
533574c6 JP |
3330 | #endif |
3331 | ||
c2cf52eb SK |
3332 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3333 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3334 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3335 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3336 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3337 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3338 | #define btrfs_err(fs_info, fmt, args...) \ | |
3339 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3340 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3341 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3342 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3343 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3344 | #define btrfs_info(fs_info, fmt, args...) \ | |
3345 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3346 | |
08a84e25 DS |
3347 | /* |
3348 | * Wrappers that use printk_in_rcu | |
3349 | */ | |
3350 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3351 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3352 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3353 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3354 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3355 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3356 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3357 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3358 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3359 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3360 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3361 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3362 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3363 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3364 | ||
24aa6b41 DS |
3365 | /* |
3366 | * Wrappers that use a ratelimited printk_in_rcu | |
3367 | */ | |
3368 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3369 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3370 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3371 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3372 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3373 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3374 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3375 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3376 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3377 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3378 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3379 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3380 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3381 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3382 | ||
1dd6d7ca DS |
3383 | /* |
3384 | * Wrappers that use a ratelimited printk | |
3385 | */ | |
3386 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3387 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3388 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3389 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3390 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3391 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3392 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3393 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3394 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3395 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3396 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3397 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3398 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3399 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
897a41b1 JM |
3400 | |
3401 | #if defined(CONFIG_DYNAMIC_DEBUG) | |
3402 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3403 | do { \ | |
3404 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3405 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3406 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args); \ | |
3407 | } while (0) | |
3408 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ | |
3409 | do { \ | |
3410 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3411 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3412 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args); \ | |
3413 | } while (0) | |
3414 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ | |
3415 | do { \ | |
3416 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3417 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3418 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, \ | |
3419 | ##args);\ | |
3420 | } while (0) | |
3421 | #define btrfs_debug_rl(fs_info, fmt, args...) \ | |
3422 | do { \ | |
3423 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3424 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3425 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, \ | |
3426 | ##args); \ | |
3427 | } while (0) | |
3428 | #elif defined(DEBUG) | |
c2cf52eb SK |
3429 | #define btrfs_debug(fs_info, fmt, args...) \ |
3430 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3431 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3432 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3433 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3434 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3435 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3436 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3437 | #else |
3438 | #define btrfs_debug(fs_info, fmt, args...) \ | |
c01f5f96 | 3439 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
08a84e25 | 3440 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
b6fdfbff | 3441 | btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
24aa6b41 | 3442 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
b6fdfbff | 3443 | btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
1dd6d7ca | 3444 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
c01f5f96 | 3445 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
27a0dd61 | 3446 | #endif |
c2cf52eb | 3447 | |
08a84e25 DS |
3448 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3449 | do { \ | |
3450 | rcu_read_lock(); \ | |
3451 | btrfs_printk(fs_info, fmt, ##args); \ | |
b6fdfbff MT |
3452 | rcu_read_unlock(); \ |
3453 | } while (0) | |
3454 | ||
3455 | #define btrfs_no_printk_in_rcu(fs_info, fmt, args...) \ | |
3456 | do { \ | |
3457 | rcu_read_lock(); \ | |
3458 | btrfs_no_printk(fs_info, fmt, ##args); \ | |
08a84e25 DS |
3459 | rcu_read_unlock(); \ |
3460 | } while (0) | |
3461 | ||
24aa6b41 DS |
3462 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3463 | do { \ | |
3464 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3465 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3466 | DEFAULT_RATELIMIT_BURST); \ | |
3467 | if (__ratelimit(&_rs)) \ | |
3468 | btrfs_printk(fs_info, fmt, ##args); \ | |
3469 | } while (0) | |
3470 | ||
3471 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3472 | do { \ | |
3473 | rcu_read_lock(); \ | |
3474 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3475 | rcu_read_unlock(); \ | |
3476 | } while (0) | |
3477 | ||
2e17c7c6 JB |
3478 | #ifdef CONFIG_BTRFS_ASSERT |
3479 | ||
c0d19e2b | 3480 | __cold |
2ffad70e | 3481 | static inline void assfail(const char *expr, const char *file, int line) |
2e17c7c6 | 3482 | { |
ab8d0fc4 | 3483 | pr_err("assertion failed: %s, file: %s, line: %d\n", |
2e17c7c6 JB |
3484 | expr, file, line); |
3485 | BUG(); | |
3486 | } | |
3487 | ||
3488 | #define ASSERT(expr) \ | |
3489 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3490 | #else | |
3491 | #define ASSERT(expr) ((void)0) | |
3492 | #endif | |
3493 | ||
f8f591df JT |
3494 | /* |
3495 | * Use that for functions that are conditionally exported for sanity tests but | |
3496 | * otherwise static | |
3497 | */ | |
3498 | #ifndef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3499 | #define EXPORT_FOR_TESTS static | |
3500 | #else | |
3501 | #define EXPORT_FOR_TESTS | |
3502 | #endif | |
3503 | ||
ba3c2b19 NB |
3504 | __cold |
3505 | static inline void btrfs_print_v0_err(struct btrfs_fs_info *fs_info) | |
3506 | { | |
3507 | btrfs_err(fs_info, | |
3508 | "Unsupported V0 extent filesystem detected. Aborting. Please re-create your filesystem with a newer kernel"); | |
3509 | } | |
3510 | ||
533574c6 | 3511 | __printf(5, 6) |
c0d19e2b | 3512 | __cold |
34d97007 | 3513 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3514 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3515 | |
e33e17ee | 3516 | const char *btrfs_decode_error(int errno); |
533574c6 | 3517 | |
c0d19e2b | 3518 | __cold |
49b25e05 | 3519 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
66642832 | 3520 | const char *function, |
49b25e05 JM |
3521 | unsigned int line, int errno); |
3522 | ||
c5f4ccb2 AJ |
3523 | /* |
3524 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3525 | * detected, that way the exact line number is reported. | |
3526 | */ | |
66642832 | 3527 | #define btrfs_abort_transaction(trans, errno) \ |
c5f4ccb2 AJ |
3528 | do { \ |
3529 | /* Report first abort since mount */ \ | |
3530 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
66642832 | 3531 | &((trans)->fs_info->fs_state))) { \ |
e5d6b12f CM |
3532 | if ((errno) != -EIO) { \ |
3533 | WARN(1, KERN_DEBUG \ | |
3534 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3535 | (errno)); \ | |
3536 | } else { \ | |
71367b3f JM |
3537 | btrfs_debug((trans)->fs_info, \ |
3538 | "Transaction aborted (error %d)", \ | |
e5d6b12f CM |
3539 | (errno)); \ |
3540 | } \ | |
c5f4ccb2 | 3541 | } \ |
66642832 | 3542 | __btrfs_abort_transaction((trans), __func__, \ |
c5f4ccb2 AJ |
3543 | __LINE__, (errno)); \ |
3544 | } while (0) | |
3545 | ||
3546 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3547 | do { \ | |
3548 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3549 | (errno), fmt, ##args); \ | |
3550 | } while (0) | |
3551 | ||
3552 | __printf(5, 6) | |
3553 | __cold | |
3554 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3555 | unsigned int line, int errno, const char *fmt, ...); | |
3556 | /* | |
3557 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3558 | * will panic(). Otherwise we BUG() here. | |
3559 | */ | |
3560 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3561 | do { \ | |
3562 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3563 | BUG(); \ | |
3564 | } while (0) | |
3565 | ||
3566 | ||
3567 | /* compatibility and incompatibility defines */ | |
3568 | ||
2b0ce2c2 MH |
3569 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3570 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3571 | ||
3572 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3573 | u64 flag) | |
3574 | { | |
3575 | struct btrfs_super_block *disk_super; | |
3576 | u64 features; | |
3577 | ||
3578 | disk_super = fs_info->super_copy; | |
3579 | features = btrfs_super_incompat_flags(disk_super); | |
3580 | if (!(features & flag)) { | |
ceda0864 MX |
3581 | spin_lock(&fs_info->super_lock); |
3582 | features = btrfs_super_incompat_flags(disk_super); | |
3583 | if (!(features & flag)) { | |
3584 | features |= flag; | |
3585 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3586 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3587 | flag); |
3588 | } | |
3589 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3590 | } |
3591 | } | |
3592 | ||
1abfbcdf OS |
3593 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
3594 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3595 | ||
3596 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
3597 | u64 flag) | |
3598 | { | |
3599 | struct btrfs_super_block *disk_super; | |
3600 | u64 features; | |
3601 | ||
3602 | disk_super = fs_info->super_copy; | |
3603 | features = btrfs_super_incompat_flags(disk_super); | |
3604 | if (features & flag) { | |
3605 | spin_lock(&fs_info->super_lock); | |
3606 | features = btrfs_super_incompat_flags(disk_super); | |
3607 | if (features & flag) { | |
3608 | features &= ~flag; | |
3609 | btrfs_set_super_incompat_flags(disk_super, features); | |
3610 | btrfs_info(fs_info, "clearing %llu feature flag", | |
3611 | flag); | |
3612 | } | |
3613 | spin_unlock(&fs_info->super_lock); | |
3614 | } | |
3615 | } | |
3616 | ||
3173a18f JB |
3617 | #define btrfs_fs_incompat(fs_info, opt) \ |
3618 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3619 | ||
9780c497 | 3620 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3621 | { |
3622 | struct btrfs_super_block *disk_super; | |
3623 | disk_super = fs_info->super_copy; | |
3624 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3625 | } | |
3626 | ||
1abfbcdf OS |
3627 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
3628 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3629 | ||
3630 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3631 | u64 flag) | |
3632 | { | |
3633 | struct btrfs_super_block *disk_super; | |
3634 | u64 features; | |
3635 | ||
3636 | disk_super = fs_info->super_copy; | |
3637 | features = btrfs_super_compat_ro_flags(disk_super); | |
3638 | if (!(features & flag)) { | |
3639 | spin_lock(&fs_info->super_lock); | |
3640 | features = btrfs_super_compat_ro_flags(disk_super); | |
3641 | if (!(features & flag)) { | |
3642 | features |= flag; | |
3643 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3644 | btrfs_info(fs_info, "setting %llu ro feature flag", | |
3645 | flag); | |
3646 | } | |
3647 | spin_unlock(&fs_info->super_lock); | |
3648 | } | |
3649 | } | |
3650 | ||
3651 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
3652 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3653 | ||
3654 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3655 | u64 flag) | |
3656 | { | |
3657 | struct btrfs_super_block *disk_super; | |
3658 | u64 features; | |
3659 | ||
3660 | disk_super = fs_info->super_copy; | |
3661 | features = btrfs_super_compat_ro_flags(disk_super); | |
3662 | if (features & flag) { | |
3663 | spin_lock(&fs_info->super_lock); | |
3664 | features = btrfs_super_compat_ro_flags(disk_super); | |
3665 | if (features & flag) { | |
3666 | features &= ~flag; | |
3667 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3668 | btrfs_info(fs_info, "clearing %llu ro feature flag", | |
3669 | flag); | |
3670 | } | |
3671 | spin_unlock(&fs_info->super_lock); | |
3672 | } | |
3673 | } | |
3674 | ||
3675 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3676 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3677 | ||
3678 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3679 | { | |
3680 | struct btrfs_super_block *disk_super; | |
3681 | disk_super = fs_info->super_copy; | |
3682 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3683 | } | |
3684 | ||
33268eaf | 3685 | /* acl.c */ |
0eda294d | 3686 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3687 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3688 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3689 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3690 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3691 | #else |
ed8f3737 | 3692 | #define btrfs_get_acl NULL |
996a710d | 3693 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3694 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3695 | struct inode *inode, struct inode *dir) | |
3696 | { | |
3697 | return 0; | |
3698 | } | |
9b89d95a | 3699 | #endif |
0f9dd46c | 3700 | |
5d4f98a2 | 3701 | /* relocation.c */ |
6bccf3ab | 3702 | int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start); |
5d4f98a2 YZ |
3703 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
3704 | struct btrfs_root *root); | |
3705 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3706 | struct btrfs_root *root); | |
3707 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3708 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
3709 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3710 | struct btrfs_root *root, struct extent_buffer *buf, | |
3711 | struct extent_buffer *cow); | |
147d256e | 3712 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 3713 | u64 *bytes_to_reserve); |
49b25e05 | 3714 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3715 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3716 | |
3717 | /* scrub.c */ | |
aa1b8cd4 SB |
3718 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3719 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3720 | int readonly, int is_dev_replace); |
2ff7e61e JM |
3721 | void btrfs_scrub_pause(struct btrfs_fs_info *fs_info); |
3722 | void btrfs_scrub_continue(struct btrfs_fs_info *fs_info); | |
aa1b8cd4 SB |
3723 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
3724 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
3725 | struct btrfs_device *dev); | |
2ff7e61e | 3726 | int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid, |
a2de733c | 3727 | struct btrfs_scrub_progress *progress); |
0966a7b1 QW |
3728 | static inline void btrfs_init_full_stripe_locks_tree( |
3729 | struct btrfs_full_stripe_locks_tree *locks_root) | |
3730 | { | |
3731 | locks_root->root = RB_ROOT; | |
3732 | mutex_init(&locks_root->lock); | |
3733 | } | |
c404e0dc MX |
3734 | |
3735 | /* dev-replace.c */ | |
3736 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
3737 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
3738 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
3739 | ||
3740 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
3741 | { | |
3742 | btrfs_bio_counter_sub(fs_info, 1); | |
3743 | } | |
a2de733c | 3744 | |
7414a03f AJ |
3745 | /* reada.c */ |
3746 | struct reada_control { | |
c28f158e | 3747 | struct btrfs_fs_info *fs_info; /* tree to prefetch */ |
7414a03f AJ |
3748 | struct btrfs_key key_start; |
3749 | struct btrfs_key key_end; /* exclusive */ | |
3750 | atomic_t elems; | |
3751 | struct kref refcnt; | |
3752 | wait_queue_head_t wait; | |
3753 | }; | |
3754 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3755 | struct btrfs_key *start, struct btrfs_key *end); | |
3756 | int btrfs_reada_wait(void *handle); | |
3757 | void btrfs_reada_detach(void *handle); | |
d48d71aa | 3758 | int btree_readahead_hook(struct extent_buffer *eb, int err); |
7414a03f | 3759 | |
95a06077 JS |
3760 | static inline int is_fstree(u64 rootid) |
3761 | { | |
3762 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
3763 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
3764 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
3765 | return 1; |
3766 | return 0; | |
3767 | } | |
210549eb DS |
3768 | |
3769 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3770 | { | |
3771 | return signal_pending(current); | |
3772 | } | |
3773 | ||
aaedb55b JB |
3774 | /* Sanity test specific functions */ |
3775 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
a654666a | 3776 | void btrfs_test_inode_set_ops(struct inode *inode); |
aaedb55b | 3777 | void btrfs_test_destroy_inode(struct inode *inode); |
210549eb | 3778 | |
f5ee5c9a | 3779 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
fccb84c9 | 3780 | { |
b2fa1154 DS |
3781 | return test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state); |
3782 | } | |
3783 | #else | |
3784 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) | |
3785 | { | |
fccb84c9 DS |
3786 | return 0; |
3787 | } | |
b2fa1154 | 3788 | #endif |
9888c340 | 3789 | |
110a21fe DS |
3790 | static inline void cond_wake_up(struct wait_queue_head *wq) |
3791 | { | |
3792 | /* | |
3793 | * This implies a full smp_mb barrier, see comments for | |
3794 | * waitqueue_active why. | |
3795 | */ | |
3796 | if (wq_has_sleeper(wq)) | |
3797 | wake_up(wq); | |
3798 | } | |
3799 | ||
3800 | static inline void cond_wake_up_nomb(struct wait_queue_head *wq) | |
3801 | { | |
3802 | /* | |
3803 | * Special case for conditional wakeup where the barrier required for | |
3804 | * waitqueue_active is implied by some of the preceding code. Eg. one | |
3805 | * of such atomic operations (atomic_dec_and_return, ...), or a | |
3806 | * unlock/lock sequence, etc. | |
3807 | */ | |
3808 | if (waitqueue_active(wq)) | |
3809 | wake_up(wq); | |
3810 | } | |
3811 | ||
eb60ceac | 3812 | #endif |