Commit | Line | Data |
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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 | */ | |
bbe339cc | 337 | enum { READA_NONE, 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; |
129827e3 | 381 | struct rw_semaphore rwsem; |
e922e087 SB |
382 | |
383 | struct btrfs_scrub_progress scrub_progress; | |
7f8d236a DS |
384 | |
385 | struct percpu_counter bio_counter; | |
386 | wait_queue_head_t replace_wait; | |
e922e087 SB |
387 | }; |
388 | ||
c1895442 JM |
389 | /* For raid type sysfs entries */ |
390 | struct raid_kobject { | |
75cb379d | 391 | u64 flags; |
c1895442 | 392 | struct kobject kobj; |
75cb379d | 393 | struct list_head list; |
c1895442 JM |
394 | }; |
395 | ||
6324fbf3 | 396 | struct btrfs_space_info { |
26b47ff6 | 397 | spinlock_t lock; |
6a63209f | 398 | |
89a55897 JB |
399 | u64 total_bytes; /* total bytes in the space, |
400 | this doesn't take mirrors into account */ | |
b742bb82 | 401 | u64 bytes_used; /* total bytes used, |
e9c54999 | 402 | this doesn't take mirrors into account */ |
6a63209f JB |
403 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
404 | transaction finishes */ | |
405 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
406 | current allocations */ | |
6a63209f | 407 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 408 | delalloc/allocations */ |
26b47ff6 MX |
409 | u64 bytes_readonly; /* total bytes that are read only */ |
410 | ||
4f4db217 JB |
411 | u64 max_extent_size; /* This will hold the maximum extent size of |
412 | the space info if we had an ENOSPC in the | |
413 | allocator. */ | |
414 | ||
26b47ff6 MX |
415 | unsigned int full:1; /* indicates that we cannot allocate any more |
416 | chunks for this space */ | |
417 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
418 | ||
419 | unsigned int flush:1; /* set if we are trying to make space */ | |
420 | ||
421 | unsigned int force_alloc; /* set if we need to force a chunk | |
422 | alloc for this space */ | |
423 | ||
b742bb82 | 424 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
425 | u64 disk_total; /* total bytes on disk, takes mirrors into |
426 | account */ | |
6a63209f | 427 | |
26b47ff6 MX |
428 | u64 flags; |
429 | ||
b150a4f1 JB |
430 | /* |
431 | * bytes_pinned is kept in line with what is actually pinned, as in | |
432 | * we've called update_block_group and dropped the bytes_used counter | |
433 | * and increased the bytes_pinned counter. However this means that | |
434 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
bb7ab3b9 AB |
435 | * delayed refs are flushed, so this counter is inc'ed every time we |
436 | * call btrfs_free_extent so it is a realtime count of what will be | |
01327610 | 437 | * freed once the transaction is committed. It will be zeroed every |
bb7ab3b9 | 438 | * time the transaction commits. |
b150a4f1 JB |
439 | */ |
440 | struct percpu_counter total_bytes_pinned; | |
441 | ||
6324fbf3 | 442 | struct list_head list; |
75c68e9f | 443 | /* Protected by the spinlock 'lock'. */ |
633c0aad | 444 | struct list_head ro_bgs; |
957780eb JB |
445 | struct list_head priority_tickets; |
446 | struct list_head tickets; | |
939659df WX |
447 | /* |
448 | * tickets_id just indicates the next ticket will be handled, so note | |
449 | * it's not stored per ticket. | |
450 | */ | |
ce129655 | 451 | u64 tickets_id; |
0f9dd46c | 452 | |
26b47ff6 | 453 | struct rw_semaphore groups_sem; |
0f9dd46c | 454 | /* for block groups in our same type */ |
b742bb82 | 455 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 456 | wait_queue_head_t wait; |
6ab0a202 JM |
457 | |
458 | struct kobject kobj; | |
c1895442 | 459 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
0f9dd46c JB |
460 | }; |
461 | ||
688a75b9 DS |
462 | /* |
463 | * Types of block reserves | |
464 | */ | |
465 | enum { | |
466 | BTRFS_BLOCK_RSV_GLOBAL, | |
467 | BTRFS_BLOCK_RSV_DELALLOC, | |
468 | BTRFS_BLOCK_RSV_TRANS, | |
469 | BTRFS_BLOCK_RSV_CHUNK, | |
470 | BTRFS_BLOCK_RSV_DELOPS, | |
ba2c4d4e | 471 | BTRFS_BLOCK_RSV_DELREFS, |
688a75b9 DS |
472 | BTRFS_BLOCK_RSV_EMPTY, |
473 | BTRFS_BLOCK_RSV_TEMP, | |
474 | }; | |
66d8f3dd | 475 | |
f0486c68 YZ |
476 | struct btrfs_block_rsv { |
477 | u64 size; | |
478 | u64 reserved; | |
f0486c68 | 479 | struct btrfs_space_info *space_info; |
f0486c68 | 480 | spinlock_t lock; |
66d8f3dd MX |
481 | unsigned short full; |
482 | unsigned short type; | |
483 | unsigned short failfast; | |
ff6bc37e QW |
484 | |
485 | /* | |
486 | * Qgroup equivalent for @size @reserved | |
487 | * | |
488 | * Unlike normal @size/@reserved for inode rsv, qgroup doesn't care | |
489 | * about things like csum size nor how many tree blocks it will need to | |
490 | * reserve. | |
491 | * | |
492 | * Qgroup cares more about net change of the extent usage. | |
493 | * | |
494 | * So for one newly inserted file extent, in worst case it will cause | |
495 | * leaf split and level increase, nodesize for each file extent is | |
496 | * already too much. | |
497 | * | |
498 | * In short, qgroup_size/reserved is the upper limit of possible needed | |
499 | * qgroup metadata reservation. | |
500 | */ | |
501 | u64 qgroup_rsv_size; | |
502 | u64 qgroup_rsv_reserved; | |
f0486c68 YZ |
503 | }; |
504 | ||
fa9c0d79 CM |
505 | /* |
506 | * free clusters are used to claim free space in relatively large chunks, | |
583b7231 HK |
507 | * allowing us to do less seeky writes. They are used for all metadata |
508 | * allocations. In ssd_spread mode they are also used for data allocations. | |
fa9c0d79 CM |
509 | */ |
510 | struct btrfs_free_cluster { | |
511 | spinlock_t lock; | |
512 | spinlock_t refill_lock; | |
513 | struct rb_root root; | |
514 | ||
515 | /* largest extent in this cluster */ | |
516 | u64 max_size; | |
517 | ||
518 | /* first extent starting offset */ | |
519 | u64 window_start; | |
520 | ||
c759c4e1 JB |
521 | /* We did a full search and couldn't create a cluster */ |
522 | bool fragmented; | |
523 | ||
fa9c0d79 CM |
524 | struct btrfs_block_group_cache *block_group; |
525 | /* | |
526 | * when a cluster is allocated from a block group, we put the | |
527 | * cluster onto a list in the block group so that it can | |
528 | * be freed before the block group is freed. | |
529 | */ | |
530 | struct list_head block_group_list; | |
6324fbf3 CM |
531 | }; |
532 | ||
817d52f8 | 533 | enum btrfs_caching_type { |
bbe339cc DS |
534 | BTRFS_CACHE_NO, |
535 | BTRFS_CACHE_STARTED, | |
536 | BTRFS_CACHE_FAST, | |
537 | BTRFS_CACHE_FINISHED, | |
538 | BTRFS_CACHE_ERROR, | |
817d52f8 JB |
539 | }; |
540 | ||
0af3d00b | 541 | enum btrfs_disk_cache_state { |
bbe339cc DS |
542 | BTRFS_DC_WRITTEN, |
543 | BTRFS_DC_ERROR, | |
544 | BTRFS_DC_CLEAR, | |
545 | BTRFS_DC_SETUP, | |
0af3d00b JB |
546 | }; |
547 | ||
11833d66 YZ |
548 | struct btrfs_caching_control { |
549 | struct list_head list; | |
550 | struct mutex mutex; | |
551 | wait_queue_head_t wait; | |
bab39bf9 | 552 | struct btrfs_work work; |
11833d66 YZ |
553 | struct btrfs_block_group_cache *block_group; |
554 | u64 progress; | |
1e4f4714 | 555 | refcount_t count; |
11833d66 YZ |
556 | }; |
557 | ||
73fa48b6 | 558 | /* Once caching_thread() finds this much free space, it will wake up waiters. */ |
d4417e22 | 559 | #define CACHING_CTL_WAKE_UP SZ_2M |
73fa48b6 | 560 | |
4c6d1d85 CM |
561 | struct btrfs_io_ctl { |
562 | void *cur, *orig; | |
563 | struct page *page; | |
564 | struct page **pages; | |
f15376df | 565 | struct btrfs_fs_info *fs_info; |
c9dc4c65 | 566 | struct inode *inode; |
4c6d1d85 CM |
567 | unsigned long size; |
568 | int index; | |
569 | int num_pages; | |
c9dc4c65 CM |
570 | int entries; |
571 | int bitmaps; | |
4c6d1d85 CM |
572 | unsigned check_crcs:1; |
573 | }; | |
574 | ||
0966a7b1 QW |
575 | /* |
576 | * Tree to record all locked full stripes of a RAID5/6 block group | |
577 | */ | |
578 | struct btrfs_full_stripe_locks_tree { | |
579 | struct rb_root root; | |
580 | struct mutex lock; | |
581 | }; | |
582 | ||
9078a3e1 CM |
583 | struct btrfs_block_group_cache { |
584 | struct btrfs_key key; | |
585 | struct btrfs_block_group_item item; | |
817d52f8 | 586 | struct btrfs_fs_info *fs_info; |
0af3d00b | 587 | struct inode *inode; |
c286ac48 | 588 | spinlock_t lock; |
324ae4df | 589 | u64 pinned; |
e8569813 | 590 | u64 reserved; |
e570fd27 | 591 | u64 delalloc_bytes; |
1b2da372 | 592 | u64 bytes_super; |
0b86a832 | 593 | u64 flags; |
5b0e95bf | 594 | u64 cache_generation; |
a5ed9182 OS |
595 | |
596 | /* | |
597 | * If the free space extent count exceeds this number, convert the block | |
598 | * group to bitmaps. | |
599 | */ | |
600 | u32 bitmap_high_thresh; | |
601 | ||
602 | /* | |
603 | * If the free space extent count drops below this number, convert the | |
604 | * block group back to extents. | |
605 | */ | |
606 | u32 bitmap_low_thresh; | |
53b381b3 | 607 | |
e570fd27 MX |
608 | /* |
609 | * It is just used for the delayed data space allocation because | |
610 | * only the data space allocation and the relative metadata update | |
611 | * can be done cross the transaction. | |
612 | */ | |
613 | struct rw_semaphore data_rwsem; | |
614 | ||
53b381b3 DW |
615 | /* for raid56, this is a full stripe, without parity */ |
616 | unsigned long full_stripe_len; | |
617 | ||
868f401a | 618 | unsigned int ro; |
0410c94a | 619 | unsigned int iref:1; |
4f69cb98 | 620 | unsigned int has_caching_ctl:1; |
04216820 | 621 | unsigned int removed:1; |
0af3d00b JB |
622 | |
623 | int disk_cache_state; | |
0f9dd46c | 624 | |
817d52f8 | 625 | /* cache tracking stuff */ |
817d52f8 | 626 | int cached; |
11833d66 YZ |
627 | struct btrfs_caching_control *caching_ctl; |
628 | u64 last_byte_to_unpin; | |
817d52f8 | 629 | |
0f9dd46c JB |
630 | struct btrfs_space_info *space_info; |
631 | ||
632 | /* free space cache stuff */ | |
34d52cb6 | 633 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
634 | |
635 | /* block group cache stuff */ | |
636 | struct rb_node cache_node; | |
637 | ||
638 | /* for block groups in the same raid type */ | |
639 | struct list_head list; | |
d2fb3437 YZ |
640 | |
641 | /* usage count */ | |
642 | atomic_t count; | |
fa9c0d79 CM |
643 | |
644 | /* List of struct btrfs_free_clusters for this block group. | |
645 | * Today it will only have one thing on it, but that may change | |
646 | */ | |
647 | struct list_head cluster_list; | |
ea658bad | 648 | |
47ab2a6c JB |
649 | /* For delayed block group creation or deletion of empty block groups */ |
650 | struct list_head bg_list; | |
633c0aad JB |
651 | |
652 | /* For read-only block groups */ | |
653 | struct list_head ro_list; | |
04216820 FM |
654 | |
655 | atomic_t trimming; | |
ce93ec54 JB |
656 | |
657 | /* For dirty block groups */ | |
658 | struct list_head dirty_list; | |
c9dc4c65 CM |
659 | struct list_head io_list; |
660 | ||
661 | struct btrfs_io_ctl io_ctl; | |
a5ed9182 | 662 | |
9cfa3e34 FM |
663 | /* |
664 | * Incremented when doing extent allocations and holding a read lock | |
665 | * on the space_info's groups_sem semaphore. | |
666 | * Decremented when an ordered extent that represents an IO against this | |
667 | * block group's range is created (after it's added to its inode's | |
668 | * root's list of ordered extents) or immediately after the allocation | |
669 | * if it's a metadata extent or fallocate extent (for these cases we | |
670 | * don't create ordered extents). | |
671 | */ | |
672 | atomic_t reservations; | |
673 | ||
f78c436c FM |
674 | /* |
675 | * Incremented while holding the spinlock *lock* by a task checking if | |
676 | * it can perform a nocow write (incremented if the value for the *ro* | |
677 | * field is 0). Decremented by such tasks once they create an ordered | |
678 | * extent or before that if some error happens before reaching that step. | |
679 | * This is to prevent races between block group relocation and nocow | |
680 | * writes through direct IO. | |
681 | */ | |
682 | atomic_t nocow_writers; | |
683 | ||
a5ed9182 OS |
684 | /* Lock for free space tree operations. */ |
685 | struct mutex free_space_lock; | |
686 | ||
687 | /* | |
688 | * Does the block group need to be added to the free space tree? | |
689 | * Protected by free_space_lock. | |
690 | */ | |
691 | int needs_free_space; | |
0966a7b1 QW |
692 | |
693 | /* Record locked full stripes for RAID5/6 block group */ | |
694 | struct btrfs_full_stripe_locks_tree full_stripe_locks_root; | |
9078a3e1 | 695 | }; |
0b86a832 | 696 | |
097b8a7c JS |
697 | /* delayed seq elem */ |
698 | struct seq_list { | |
699 | struct list_head list; | |
700 | u64 seq; | |
701 | }; | |
702 | ||
3284da7b DS |
703 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
704 | ||
de47c9d3 EN |
705 | #define SEQ_LAST ((u64)-1) |
706 | ||
5d80366e JB |
707 | enum btrfs_orphan_cleanup_state { |
708 | ORPHAN_CLEANUP_STARTED = 1, | |
709 | ORPHAN_CLEANUP_DONE = 2, | |
710 | }; | |
711 | ||
53b381b3 DW |
712 | /* used by the raid56 code to lock stripes for read/modify/write */ |
713 | struct btrfs_stripe_hash { | |
714 | struct list_head hash_list; | |
53b381b3 DW |
715 | spinlock_t lock; |
716 | }; | |
717 | ||
718 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
719 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
720 | struct list_head stripe_cache; |
721 | spinlock_t cache_lock; | |
722 | int cache_size; | |
723 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
724 | }; |
725 | ||
726 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
727 | ||
21c7e756 MX |
728 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
729 | ||
097b8a7c | 730 | /* fs_info */ |
5d4f98a2 | 731 | struct reloc_control; |
0b86a832 | 732 | struct btrfs_device; |
8a4b83cc | 733 | struct btrfs_fs_devices; |
c9e9f97b | 734 | struct btrfs_balance_control; |
16cdcec7 | 735 | struct btrfs_delayed_root; |
afcdd129 | 736 | |
eede2bf3 OS |
737 | /* |
738 | * Block group or device which contains an active swapfile. Used for preventing | |
739 | * unsafe operations while a swapfile is active. | |
740 | * | |
741 | * These are sorted on (ptr, inode) (note that a block group or device can | |
742 | * contain more than one swapfile). We compare the pointer values because we | |
743 | * don't actually care what the object is, we just need a quick check whether | |
744 | * the object exists in the rbtree. | |
745 | */ | |
746 | struct btrfs_swapfile_pin { | |
747 | struct rb_node node; | |
748 | void *ptr; | |
749 | struct inode *inode; | |
750 | /* | |
751 | * If true, ptr points to a struct btrfs_block_group_cache. Otherwise, | |
752 | * ptr points to a struct btrfs_device. | |
753 | */ | |
754 | bool is_block_group; | |
755 | }; | |
756 | ||
757 | bool btrfs_pinned_by_swapfile(struct btrfs_fs_info *fs_info, void *ptr); | |
758 | ||
eb1a524c DS |
759 | enum { |
760 | BTRFS_FS_BARRIER, | |
761 | BTRFS_FS_CLOSING_START, | |
762 | BTRFS_FS_CLOSING_DONE, | |
763 | BTRFS_FS_LOG_RECOVERING, | |
764 | BTRFS_FS_OPEN, | |
765 | BTRFS_FS_QUOTA_ENABLED, | |
766 | BTRFS_FS_UPDATE_UUID_TREE_GEN, | |
767 | BTRFS_FS_CREATING_FREE_SPACE_TREE, | |
768 | BTRFS_FS_BTREE_ERR, | |
769 | BTRFS_FS_LOG1_ERR, | |
770 | BTRFS_FS_LOG2_ERR, | |
771 | BTRFS_FS_QUOTA_OVERRIDE, | |
772 | /* Used to record internally whether fs has been frozen */ | |
773 | BTRFS_FS_FROZEN, | |
774 | /* | |
775 | * Indicate that a whole-filesystem exclusive operation is running | |
776 | * (device replace, resize, device add/delete, balance) | |
777 | */ | |
778 | BTRFS_FS_EXCL_OP, | |
779 | /* | |
780 | * To info transaction_kthread we need an immediate commit so it | |
781 | * doesn't need to wait for commit_interval | |
782 | */ | |
783 | BTRFS_FS_NEED_ASYNC_COMMIT, | |
784 | /* | |
785 | * Indicate that balance has been set up from the ioctl and is in the | |
786 | * main phase. The fs_info::balance_ctl is initialized. | |
787 | */ | |
788 | BTRFS_FS_BALANCE_RUNNING, | |
789 | }; | |
3009a62f | 790 | |
9f5fae2f | 791 | struct btrfs_fs_info { |
e17cade2 | 792 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
afcdd129 | 793 | unsigned long flags; |
62e2749e CM |
794 | struct btrfs_root *extent_root; |
795 | struct btrfs_root *tree_root; | |
0b86a832 CM |
796 | struct btrfs_root *chunk_root; |
797 | struct btrfs_root *dev_root; | |
3de4586c | 798 | struct btrfs_root *fs_root; |
d20f7043 | 799 | struct btrfs_root *csum_root; |
416ac51d | 800 | struct btrfs_root *quota_root; |
f7a81ea4 | 801 | struct btrfs_root *uuid_root; |
a5ed9182 | 802 | struct btrfs_root *free_space_root; |
e02119d5 CM |
803 | |
804 | /* the log root tree is a directory of all the other log roots */ | |
805 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
806 | |
807 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 808 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 809 | |
0f9dd46c JB |
810 | /* block group cache stuff */ |
811 | spinlock_t block_group_cache_lock; | |
a1897fdd | 812 | u64 first_logical_byte; |
0f9dd46c JB |
813 | struct rb_root block_group_cache_tree; |
814 | ||
2bf64758 | 815 | /* keep track of unallocated space */ |
a5ed45f8 | 816 | atomic64_t free_chunk_space; |
2bf64758 | 817 | |
11833d66 YZ |
818 | struct extent_io_tree freed_extents[2]; |
819 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 820 | |
0b86a832 CM |
821 | /* logical->physical extent mapping */ |
822 | struct btrfs_mapping_tree mapping_tree; | |
823 | ||
16cdcec7 MX |
824 | /* |
825 | * block reservation for extent, checksum, root tree and | |
826 | * delayed dir index item | |
827 | */ | |
f0486c68 | 828 | struct btrfs_block_rsv global_block_rsv; |
f0486c68 YZ |
829 | /* block reservation for metadata operations */ |
830 | struct btrfs_block_rsv trans_block_rsv; | |
831 | /* block reservation for chunk tree */ | |
832 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
833 | /* block reservation for delayed operations */ |
834 | struct btrfs_block_rsv delayed_block_rsv; | |
ba2c4d4e JB |
835 | /* block reservation for delayed refs */ |
836 | struct btrfs_block_rsv delayed_refs_rsv; | |
f0486c68 YZ |
837 | |
838 | struct btrfs_block_rsv empty_block_rsv; | |
839 | ||
293ffd5f | 840 | u64 generation; |
15ee9bc7 | 841 | u64 last_trans_committed; |
0a2b2a84 | 842 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
843 | |
844 | /* | |
845 | * this is updated to the current trans every time a full commit | |
846 | * is required instead of the faster short fsync log commits | |
847 | */ | |
848 | u64 last_trans_log_full_commit; | |
25cd999e | 849 | unsigned long mount_opt; |
572d9ab7 DS |
850 | /* |
851 | * Track requests for actions that need to be done during transaction | |
852 | * commit (like for some mount options). | |
853 | */ | |
854 | unsigned long pending_changes; | |
261507a0 | 855 | unsigned long compress_type:4; |
f51d2b59 | 856 | unsigned int compress_level; |
d3740608 | 857 | u32 commit_interval; |
8c6a3ee6 MX |
858 | /* |
859 | * It is a suggestive number, the read side is safe even it gets a | |
860 | * wrong number because we will write out the data into a regular | |
861 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
862 | * so it is also safe. | |
863 | */ | |
6f568d35 | 864 | u64 max_inline; |
0d0c71b3 | 865 | |
79154b1b | 866 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 867 | wait_queue_head_t transaction_throttle; |
f9295749 | 868 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 869 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 870 | wait_queue_head_t async_submit_wait; |
e02119d5 | 871 | |
ceda0864 MX |
872 | /* |
873 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
874 | * when they are updated. | |
875 | * | |
876 | * Because we do not clear the flags for ever, so we needn't use | |
877 | * the lock on the read side. | |
878 | * | |
879 | * We also needn't use the lock when we mount the fs, because | |
880 | * there is no other task which will update the flag. | |
881 | */ | |
882 | spinlock_t super_lock; | |
6c41761f DS |
883 | struct btrfs_super_block *super_copy; |
884 | struct btrfs_super_block *super_for_commit; | |
e20d96d6 | 885 | struct super_block *sb; |
d98237b3 | 886 | struct inode *btree_inode; |
e02119d5 | 887 | struct mutex tree_log_mutex; |
a74a4b97 CM |
888 | struct mutex transaction_kthread_mutex; |
889 | struct mutex cleaner_mutex; | |
925baedd | 890 | struct mutex chunk_mutex; |
53b381b3 | 891 | |
1bbc621e CM |
892 | /* |
893 | * this is taken to make sure we don't set block groups ro after | |
894 | * the free space cache has been allocated on them | |
895 | */ | |
896 | struct mutex ro_block_group_mutex; | |
897 | ||
53b381b3 DW |
898 | /* this is used during read/modify/write to make sure |
899 | * no two ios are trying to mod the same stripe at the same | |
900 | * time | |
901 | */ | |
902 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
903 | ||
5a3f23d5 CM |
904 | /* |
905 | * this protects the ordered operations list only while we are | |
906 | * processing all of the entries on it. This way we make | |
907 | * sure the commit code doesn't find the list temporarily empty | |
908 | * because another function happens to be doing non-waiting preflush | |
909 | * before jumping into the main commit. | |
910 | */ | |
911 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 912 | |
9e351cc8 | 913 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 914 | |
c71bf099 | 915 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 916 | |
c71bf099 | 917 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
918 | struct srcu_struct subvol_srcu; |
919 | ||
a4abeea4 | 920 | spinlock_t trans_lock; |
7585717f CM |
921 | /* |
922 | * the reloc mutex goes with the trans lock, it is taken | |
923 | * during commit to protect us from the relocation code | |
924 | */ | |
925 | struct mutex reloc_mutex; | |
926 | ||
8fd17795 | 927 | struct list_head trans_list; |
facda1e7 | 928 | struct list_head dead_roots; |
11833d66 | 929 | struct list_head caching_block_groups; |
e02119d5 | 930 | |
24bbcf04 YZ |
931 | spinlock_t delayed_iput_lock; |
932 | struct list_head delayed_iputs; | |
c2d6cb16 | 933 | struct mutex cleaner_delayed_iput_mutex; |
24bbcf04 | 934 | |
f29021b2 JS |
935 | /* this protects tree_mod_seq_list */ |
936 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 937 | atomic64_t tree_mod_seq; |
f29021b2 JS |
938 | struct list_head tree_mod_seq_list; |
939 | ||
940 | /* this protects tree_mod_log */ | |
941 | rwlock_t tree_mod_log_lock; | |
942 | struct rb_root tree_mod_log; | |
943 | ||
771ed689 | 944 | atomic_t async_delalloc_pages; |
ce9adaa5 | 945 | |
3eaa2885 | 946 | /* |
199c2a9c | 947 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 948 | */ |
199c2a9c | 949 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
950 | |
951 | /* | |
199c2a9c MX |
952 | * all fs/file tree roots in which there are data=ordered extents |
953 | * pending writeback are added into this list. | |
954 | * | |
5a3f23d5 CM |
955 | * these can span multiple transactions and basically include |
956 | * every dirty data page that isn't from nodatacow | |
957 | */ | |
199c2a9c | 958 | struct list_head ordered_roots; |
5a3f23d5 | 959 | |
573bfb72 | 960 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
961 | spinlock_t delalloc_root_lock; |
962 | /* all fs/file tree roots that have delalloc inodes. */ | |
963 | struct list_head delalloc_roots; | |
3eaa2885 | 964 | |
8b712842 CM |
965 | /* |
966 | * there is a pool of worker threads for checksumming during writes | |
967 | * and a pool for checksumming after reads. This is because readers | |
968 | * can run with FS locks held, and the writers may be waiting for | |
969 | * those locks. We don't want ordering in the pending list to cause | |
970 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
971 | * |
972 | * A third pool does submit_bio to avoid deadlocking with the other | |
973 | * two | |
8b712842 | 974 | */ |
d458b054 QW |
975 | struct btrfs_workqueue *workers; |
976 | struct btrfs_workqueue *delalloc_workers; | |
977 | struct btrfs_workqueue *flush_workers; | |
978 | struct btrfs_workqueue *endio_workers; | |
979 | struct btrfs_workqueue *endio_meta_workers; | |
980 | struct btrfs_workqueue *endio_raid56_workers; | |
8b110e39 | 981 | struct btrfs_workqueue *endio_repair_workers; |
d458b054 QW |
982 | struct btrfs_workqueue *rmw_workers; |
983 | struct btrfs_workqueue *endio_meta_write_workers; | |
984 | struct btrfs_workqueue *endio_write_workers; | |
985 | struct btrfs_workqueue *endio_freespace_worker; | |
986 | struct btrfs_workqueue *submit_workers; | |
987 | struct btrfs_workqueue *caching_workers; | |
988 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 989 | |
247e743c CM |
990 | /* |
991 | * fixup workers take dirty pages that didn't properly go through | |
992 | * the cow mechanism and make them safe to write. It happens | |
993 | * for the sys_munmap function call path | |
994 | */ | |
d458b054 QW |
995 | struct btrfs_workqueue *fixup_workers; |
996 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b CM |
997 | |
998 | /* the extent workers do delayed refs on the extent allocation tree */ | |
999 | struct btrfs_workqueue *extent_workers; | |
a74a4b97 CM |
1000 | struct task_struct *transaction_kthread; |
1001 | struct task_struct *cleaner_kthread; | |
f7b885be | 1002 | u32 thread_pool_size; |
8b712842 | 1003 | |
6ab0a202 | 1004 | struct kobject *space_info_kobj; |
75cb379d JM |
1005 | struct list_head pending_raid_kobjs; |
1006 | spinlock_t pending_raid_kobjs_lock; /* uncontended */ | |
9f5fae2f | 1007 | |
324ae4df | 1008 | u64 total_pinned; |
b9473439 | 1009 | |
e2d84521 MX |
1010 | /* used to keep from writing metadata until there is a nice batch */ |
1011 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 1012 | struct percpu_counter delalloc_bytes; |
e2d84521 | 1013 | s32 dirty_metadata_batch; |
963d678b MX |
1014 | s32 delalloc_batch; |
1015 | ||
0b86a832 CM |
1016 | struct list_head dirty_cowonly_roots; |
1017 | ||
8a4b83cc | 1018 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1019 | |
1020 | /* | |
dc2d3005 JM |
1021 | * The space_info list is effectively read only after initial |
1022 | * setup. It is populated at mount time and cleaned up after | |
1023 | * all block groups are removed. RCU is used to protect it. | |
4184ea7f | 1024 | */ |
6324fbf3 | 1025 | struct list_head space_info; |
4184ea7f | 1026 | |
b4d7c3c9 LZ |
1027 | struct btrfs_space_info *data_sinfo; |
1028 | ||
5d4f98a2 YZ |
1029 | struct reloc_control *reloc_ctl; |
1030 | ||
583b7231 | 1031 | /* data_alloc_cluster is only used in ssd_spread mode */ |
fa9c0d79 CM |
1032 | struct btrfs_free_cluster data_alloc_cluster; |
1033 | ||
1034 | /* all metadata allocations go through this cluster */ | |
1035 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1036 | |
4cb5300b CM |
1037 | /* auto defrag inodes go here */ |
1038 | spinlock_t defrag_inodes_lock; | |
1039 | struct rb_root defrag_inodes; | |
1040 | atomic_t defrag_running; | |
1041 | ||
de98ced9 MX |
1042 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
1043 | seqlock_t profiles_lock; | |
a46d11a8 ID |
1044 | /* |
1045 | * these three are in extended format (availability of single | |
1046 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
1047 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
1048 | */ | |
d18a2c44 CM |
1049 | u64 avail_data_alloc_bits; |
1050 | u64 avail_metadata_alloc_bits; | |
1051 | u64 avail_system_alloc_bits; | |
788f20eb | 1052 | |
c9e9f97b ID |
1053 | /* restriper state */ |
1054 | spinlock_t balance_lock; | |
1055 | struct mutex balance_mutex; | |
837d5b6e | 1056 | atomic_t balance_pause_req; |
a7e99c69 | 1057 | atomic_t balance_cancel_req; |
c9e9f97b | 1058 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1059 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1060 | |
d612ac59 AJ |
1061 | u32 data_chunk_allocations; |
1062 | u32 metadata_ratio; | |
97e728d4 | 1063 | |
788f20eb | 1064 | void *bdev_holder; |
acce952b | 1065 | |
a2de733c AJ |
1066 | /* private scrub information */ |
1067 | struct mutex scrub_lock; | |
1068 | atomic_t scrubs_running; | |
1069 | atomic_t scrub_pause_req; | |
1070 | atomic_t scrubs_paused; | |
1071 | atomic_t scrub_cancel_req; | |
1072 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 1073 | int scrub_workers_refcnt; |
d458b054 QW |
1074 | struct btrfs_workqueue *scrub_workers; |
1075 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
1076 | struct btrfs_workqueue *scrub_nocow_workers; | |
20b2e302 | 1077 | struct btrfs_workqueue *scrub_parity_workers; |
a2de733c | 1078 | |
21adbd5c SB |
1079 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1080 | u32 check_integrity_print_mask; | |
1081 | #endif | |
416ac51d AJ |
1082 | /* is qgroup tracking in a consistent state? */ |
1083 | u64 qgroup_flags; | |
1084 | ||
1085 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1086 | struct rb_root qgroup_tree; | |
fcebe456 | 1087 | struct rb_root qgroup_op_tree; |
416ac51d | 1088 | spinlock_t qgroup_lock; |
fcebe456 JB |
1089 | spinlock_t qgroup_op_lock; |
1090 | atomic_t qgroup_op_seq; | |
416ac51d | 1091 | |
1e8f9158 WS |
1092 | /* |
1093 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1094 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1095 | */ | |
1096 | struct ulist *qgroup_ulist; | |
1097 | ||
f2f6ed3d WS |
1098 | /* protect user change for quota operations */ |
1099 | struct mutex qgroup_ioctl_lock; | |
1100 | ||
416ac51d AJ |
1101 | /* list of dirty qgroups to be written at next commit */ |
1102 | struct list_head dirty_qgroups; | |
1103 | ||
e69bcee3 | 1104 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 1105 | u64 qgroup_seq; |
21adbd5c | 1106 | |
2f232036 JS |
1107 | /* qgroup rescan items */ |
1108 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1109 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1110 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1111 | struct completion qgroup_rescan_completion; |
b382a324 | 1112 | struct btrfs_work qgroup_rescan_work; |
d2c609b8 | 1113 | bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ |
2f232036 | 1114 | |
acce952b | 1115 | /* filesystem state */ |
87533c47 | 1116 | unsigned long fs_state; |
16cdcec7 MX |
1117 | |
1118 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1119 | |
90519d66 AJ |
1120 | /* readahead tree */ |
1121 | spinlock_t reada_lock; | |
1122 | struct radix_tree_root reada_tree; | |
531f4b1a | 1123 | |
2fefd558 ZL |
1124 | /* readahead works cnt */ |
1125 | atomic_t reada_works_cnt; | |
1126 | ||
f28491e0 JB |
1127 | /* Extent buffer radix tree */ |
1128 | spinlock_t buffer_lock; | |
1129 | struct radix_tree_root buffer_radix; | |
1130 | ||
af31f5e5 CM |
1131 | /* next backup root to be overwritten */ |
1132 | int backup_root_index; | |
5af3e8cc | 1133 | |
e922e087 SB |
1134 | /* device replace state */ |
1135 | struct btrfs_dev_replace dev_replace; | |
5ac00add | 1136 | |
803b2f54 | 1137 | struct semaphore uuid_tree_rescan_sem; |
21c7e756 MX |
1138 | |
1139 | /* Used to reclaim the metadata space in the background. */ | |
1140 | struct work_struct async_reclaim_work; | |
47ab2a6c JB |
1141 | |
1142 | spinlock_t unused_bgs_lock; | |
1143 | struct list_head unused_bgs; | |
d4b450cd | 1144 | struct mutex unused_bg_unpin_mutex; |
67c5e7d4 | 1145 | struct mutex delete_unused_bgs_mutex; |
f667aef6 QW |
1146 | |
1147 | /* For btrfs to record security options */ | |
1148 | struct security_mnt_opts security_opts; | |
04216820 FM |
1149 | |
1150 | /* | |
1151 | * Chunks that can't be freed yet (under a trim/discard operation) | |
1152 | * and will be latter freed. Protected by fs_info->chunk_mutex. | |
1153 | */ | |
1154 | struct list_head pinned_chunks; | |
511711af | 1155 | |
da17066c JM |
1156 | /* Cached block sizes */ |
1157 | u32 nodesize; | |
1158 | u32 sectorsize; | |
1159 | u32 stripesize; | |
fd708b81 | 1160 | |
eede2bf3 OS |
1161 | /* Block groups and devices containing active swapfiles. */ |
1162 | spinlock_t swapfile_pins_lock; | |
1163 | struct rb_root swapfile_pins; | |
1164 | ||
fd708b81 JB |
1165 | #ifdef CONFIG_BTRFS_FS_REF_VERIFY |
1166 | spinlock_t ref_verify_lock; | |
1167 | struct rb_root block_tree; | |
1168 | #endif | |
324ae4df | 1169 | }; |
0b86a832 | 1170 | |
da17066c JM |
1171 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
1172 | { | |
1173 | return sb->s_fs_info; | |
1174 | } | |
1175 | ||
8257b2dc MX |
1176 | struct btrfs_subvolume_writers { |
1177 | struct percpu_counter counter; | |
1178 | wait_queue_head_t wait; | |
1179 | }; | |
1180 | ||
27cdeb70 MX |
1181 | /* |
1182 | * The state of btrfs root | |
1183 | */ | |
61fa90c1 DS |
1184 | enum { |
1185 | /* | |
1186 | * btrfs_record_root_in_trans is a multi-step process, and it can race | |
1187 | * with the balancing code. But the race is very small, and only the | |
1188 | * first time the root is added to each transaction. So IN_TRANS_SETUP | |
1189 | * is used to tell us when more checks are required | |
1190 | */ | |
1191 | BTRFS_ROOT_IN_TRANS_SETUP, | |
1192 | BTRFS_ROOT_REF_COWS, | |
1193 | BTRFS_ROOT_TRACK_DIRTY, | |
1194 | BTRFS_ROOT_IN_RADIX, | |
1195 | BTRFS_ROOT_ORPHAN_ITEM_INSERTED, | |
1196 | BTRFS_ROOT_DEFRAG_RUNNING, | |
1197 | BTRFS_ROOT_FORCE_COW, | |
1198 | BTRFS_ROOT_MULTI_LOG_TASKS, | |
1199 | BTRFS_ROOT_DIRTY, | |
1200 | }; | |
27cdeb70 | 1201 | |
9f5fae2f CM |
1202 | /* |
1203 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1204 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1205 | */ |
1206 | struct btrfs_root { | |
5f39d397 | 1207 | struct extent_buffer *node; |
925baedd | 1208 | |
5f39d397 | 1209 | struct extent_buffer *commit_root; |
e02119d5 | 1210 | struct btrfs_root *log_root; |
1a40e23b | 1211 | struct btrfs_root *reloc_root; |
31153d81 | 1212 | |
27cdeb70 | 1213 | unsigned long state; |
62e2749e CM |
1214 | struct btrfs_root_item root_item; |
1215 | struct btrfs_key root_key; | |
9f5fae2f | 1216 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1217 | struct extent_io_tree dirty_log_pages; |
1218 | ||
a2135011 | 1219 | struct mutex objectid_mutex; |
7237f183 | 1220 | |
f0486c68 YZ |
1221 | spinlock_t accounting_lock; |
1222 | struct btrfs_block_rsv *block_rsv; | |
1223 | ||
581bb050 | 1224 | /* free ino cache stuff */ |
581bb050 | 1225 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1226 | enum btrfs_caching_type ino_cache_state; |
1227 | spinlock_t ino_cache_lock; | |
1228 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1229 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1230 | u64 ino_cache_progress; |
1231 | struct inode *ino_cache_inode; | |
581bb050 | 1232 | |
e02119d5 | 1233 | struct mutex log_mutex; |
7237f183 YZ |
1234 | wait_queue_head_t log_writer_wait; |
1235 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1236 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1237 | atomic_t log_writers; |
1238 | atomic_t log_commit[2]; | |
2ecb7923 | 1239 | atomic_t log_batch; |
bb14a59b | 1240 | int log_transid; |
d1433deb MX |
1241 | /* No matter the commit succeeds or not*/ |
1242 | int log_transid_committed; | |
1243 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1244 | int last_log_commit; |
ff782e0a | 1245 | pid_t log_start_pid; |
ea8c2819 | 1246 | |
0f7d52f4 | 1247 | u64 last_trans; |
5f39d397 | 1248 | |
9f5fae2f | 1249 | u32 type; |
13a8a7c8 YZ |
1250 | |
1251 | u64 highest_objectid; | |
7585717f | 1252 | |
3f157a2f | 1253 | u64 defrag_trans_start; |
6702ed49 | 1254 | struct btrfs_key defrag_progress; |
0ef3e66b | 1255 | struct btrfs_key defrag_max; |
0b86a832 CM |
1256 | |
1257 | /* the dirty list is only used by non-reference counted roots */ | |
1258 | struct list_head dirty_list; | |
7b128766 | 1259 | |
5d4f98a2 YZ |
1260 | struct list_head root_list; |
1261 | ||
2ab28f32 JB |
1262 | spinlock_t log_extents_lock[2]; |
1263 | struct list_head logged_list[2]; | |
1264 | ||
d68fc57b | 1265 | int orphan_cleanup_state; |
3394e160 | 1266 | |
5d4f98a2 YZ |
1267 | spinlock_t inode_lock; |
1268 | /* red-black tree that keeps track of in-memory inodes */ | |
1269 | struct rb_root inode_tree; | |
1270 | ||
16cdcec7 MX |
1271 | /* |
1272 | * radix tree that keeps track of delayed nodes of every inode, | |
1273 | * protected by inode_lock | |
1274 | */ | |
1275 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1276 | /* |
1277 | * right now this just gets used so that a root has its own devid | |
1278 | * for stat. It may be used for more later | |
1279 | */ | |
0ee5dc67 | 1280 | dev_t anon_dev; |
f1ebcc74 | 1281 | |
5f3ab90a | 1282 | spinlock_t root_item_lock; |
0700cea7 | 1283 | refcount_t refs; |
eb73c1b7 | 1284 | |
573bfb72 | 1285 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1286 | spinlock_t delalloc_lock; |
1287 | /* | |
1288 | * all of the inodes that have delalloc bytes. It is possible for | |
1289 | * this list to be empty even when there is still dirty data=ordered | |
1290 | * extents waiting to finish IO. | |
1291 | */ | |
1292 | struct list_head delalloc_inodes; | |
1293 | struct list_head delalloc_root; | |
1294 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1295 | |
1296 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1297 | /* |
1298 | * this is used by the balancing code to wait for all the pending | |
1299 | * ordered extents | |
1300 | */ | |
1301 | spinlock_t ordered_extent_lock; | |
1302 | ||
1303 | /* | |
1304 | * all of the data=ordered extents pending writeback | |
1305 | * these can span multiple transactions and basically include | |
1306 | * every dirty data page that isn't from nodatacow | |
1307 | */ | |
1308 | struct list_head ordered_extents; | |
1309 | struct list_head ordered_root; | |
1310 | u64 nr_ordered_extents; | |
2c686537 DS |
1311 | |
1312 | /* | |
1313 | * Number of currently running SEND ioctls to prevent | |
1314 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1315 | */ | |
1316 | int send_in_progress; | |
8257b2dc | 1317 | struct btrfs_subvolume_writers *subv_writers; |
ea14b57f | 1318 | atomic_t will_be_snapshotted; |
8ecebf4d | 1319 | atomic_t snapshot_force_cow; |
8287475a QW |
1320 | |
1321 | /* For qgroup metadata reserved space */ | |
1322 | spinlock_t qgroup_meta_rsv_lock; | |
1323 | u64 qgroup_meta_rsv_pertrans; | |
1324 | u64 qgroup_meta_rsv_prealloc; | |
57ec5fb4 | 1325 | |
eede2bf3 OS |
1326 | /* Number of active swapfiles */ |
1327 | atomic_t nr_swapfiles; | |
1328 | ||
57ec5fb4 DS |
1329 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
1330 | u64 alloc_bytenr; | |
1331 | #endif | |
62e2749e | 1332 | }; |
118c701e | 1333 | |
23b5ec74 | 1334 | struct btrfs_file_private { |
23b5ec74 JB |
1335 | void *filldir_buf; |
1336 | }; | |
1337 | ||
da17066c JM |
1338 | static inline u32 btrfs_inode_sectorsize(const struct inode *inode) |
1339 | { | |
1340 | return btrfs_sb(inode->i_sb)->sectorsize; | |
1341 | } | |
62e2749e | 1342 | |
da17066c | 1343 | static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1344 | { |
118c701e NB |
1345 | |
1346 | return info->nodesize - sizeof(struct btrfs_header); | |
1db1ff92 JM |
1347 | } |
1348 | ||
3d9ec8c4 NB |
1349 | #define BTRFS_LEAF_DATA_OFFSET offsetof(struct btrfs_leaf, items) |
1350 | ||
da17066c | 1351 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1352 | { |
da17066c | 1353 | return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item); |
1db1ff92 JM |
1354 | } |
1355 | ||
da17066c | 1356 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info) |
1db1ff92 | 1357 | { |
da17066c | 1358 | return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr); |
1db1ff92 JM |
1359 | } |
1360 | ||
1361 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ | |
1362 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
da17066c | 1363 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1364 | { |
da17066c | 1365 | return BTRFS_MAX_ITEM_SIZE(info) - |
1db1ff92 JM |
1366 | BTRFS_FILE_EXTENT_INLINE_DATA_START; |
1367 | } | |
1368 | ||
da17066c | 1369 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1370 | { |
da17066c | 1371 | return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item); |
1db1ff92 JM |
1372 | } |
1373 | ||
0942caa3 DS |
1374 | /* |
1375 | * Flags for mount options. | |
1376 | * | |
1377 | * Note: don't forget to add new options to btrfs_show_options() | |
1378 | */ | |
21ad10cf CM |
1379 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1380 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1381 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1382 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1383 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1384 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1385 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1386 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1387 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1388 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1389 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1390 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1391 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1392 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1393 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1394 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1395 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1396 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
8dcddfa0 | 1397 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
9555c6c1 | 1398 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1399 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1400 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1401 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 1402 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
d0bd4560 JB |
1403 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
1404 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) | |
f7d3d2f9 | 1405 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
96da0919 | 1406 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
fb592373 | 1407 | #define BTRFS_MOUNT_REF_VERIFY (1 << 28) |
b6cda9bc | 1408 | |
8b87dc17 | 1409 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1410 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1411 | |
b6cda9bc CM |
1412 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1413 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1414 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
3cdde224 | 1415 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
b6cda9bc | 1416 | BTRFS_MOUNT_##opt) |
572d9ab7 | 1417 | |
3cdde224 | 1418 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1419 | { \ |
3cdde224 JM |
1420 | if (!btrfs_test_opt(fs_info, opt)) \ |
1421 | btrfs_info(fs_info, fmt, ##args); \ | |
1422 | btrfs_set_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1423 | } |
1424 | ||
3cdde224 | 1425 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1426 | { \ |
3cdde224 JM |
1427 | if (btrfs_test_opt(fs_info, opt)) \ |
1428 | btrfs_info(fs_info, fmt, ##args); \ | |
1429 | btrfs_clear_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1430 | } |
1431 | ||
d0bd4560 JB |
1432 | #ifdef CONFIG_BTRFS_DEBUG |
1433 | static inline int | |
2ff7e61e | 1434 | btrfs_should_fragment_free_space(struct btrfs_block_group_cache *block_group) |
d0bd4560 | 1435 | { |
2ff7e61e | 1436 | struct btrfs_fs_info *fs_info = block_group->fs_info; |
0b246afa JM |
1437 | |
1438 | return (btrfs_test_opt(fs_info, FRAGMENT_METADATA) && | |
d0bd4560 | 1439 | block_group->flags & BTRFS_BLOCK_GROUP_METADATA) || |
0b246afa | 1440 | (btrfs_test_opt(fs_info, FRAGMENT_DATA) && |
d0bd4560 JB |
1441 | block_group->flags & BTRFS_BLOCK_GROUP_DATA); |
1442 | } | |
1443 | #endif | |
1444 | ||
572d9ab7 DS |
1445 | /* |
1446 | * Requests for changes that need to be done during transaction commit. | |
1447 | * | |
1448 | * Internal mount options that are used for special handling of the real | |
1449 | * mount options (eg. cannot be set during remount and have to be set during | |
1450 | * transaction commit) | |
1451 | */ | |
1452 | ||
7e1876ac DS |
1453 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
1454 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) | |
d51033d0 | 1455 | #define BTRFS_PENDING_COMMIT (2) |
7e1876ac | 1456 | |
572d9ab7 DS |
1457 | #define btrfs_test_pending(info, opt) \ |
1458 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1459 | #define btrfs_set_pending(info, opt) \ | |
1460 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1461 | #define btrfs_clear_pending(info, opt) \ | |
1462 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1463 | ||
1464 | /* | |
1465 | * Helpers for setting pending mount option changes. | |
1466 | * | |
1467 | * Expects corresponding macros | |
1468 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1469 | */ | |
1470 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1471 | do { \ | |
1472 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1473 | btrfs_info((info), fmt, ##args); \ | |
1474 | btrfs_set_pending((info), SET_##opt); \ | |
1475 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1476 | } \ | |
1477 | } while(0) | |
1478 | ||
1479 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1480 | do { \ | |
1481 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1482 | btrfs_info((info), fmt, ##args); \ | |
1483 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1484 | btrfs_clear_pending((info), SET_##opt); \ | |
1485 | } \ | |
1486 | } while(0) | |
1487 | ||
b98b6767 Y |
1488 | /* |
1489 | * Inode flags | |
1490 | */ | |
fdebe2bd Y |
1491 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1492 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1493 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1494 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1495 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1496 | #define BTRFS_INODE_SYNC (1 << 5) |
1497 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1498 | #define BTRFS_INODE_APPEND (1 << 7) | |
1499 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1500 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1501 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1502 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1503 | |
08fe4db1 LZ |
1504 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1505 | ||
cfed81a0 | 1506 | struct btrfs_map_token { |
1cbb1f45 | 1507 | const struct extent_buffer *eb; |
cfed81a0 CM |
1508 | char *kaddr; |
1509 | unsigned long offset; | |
1510 | }; | |
1511 | ||
2e78c927 CR |
1512 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
1513 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) | |
1514 | ||
cfed81a0 CM |
1515 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
1516 | { | |
ad914559 | 1517 | token->kaddr = NULL; |
cfed81a0 CM |
1518 | } |
1519 | ||
01327610 | 1520 | /* some macros to generate set/get functions for the struct fields. This |
5f39d397 CM |
1521 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
1522 | * one for u8: | |
1523 | */ | |
1524 | #define le8_to_cpu(v) (v) | |
1525 | #define cpu_to_le8(v) (v) | |
1526 | #define __le8 u8 | |
1527 | ||
62e85577 | 1528 | #define read_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1529 | read_extent_buffer(eb, (char *)(result), \ |
1530 | ((unsigned long)(ptr)) + \ | |
1531 | offsetof(type, member), \ | |
1532 | sizeof(((type *)0)->member))) | |
1533 | ||
62e85577 | 1534 | #define write_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1535 | write_extent_buffer(eb, (char *)(result), \ |
1536 | ((unsigned long)(ptr)) + \ | |
1537 | offsetof(type, member), \ | |
1538 | sizeof(((type *)0)->member))) | |
1539 | ||
18077bb4 | 1540 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1cbb1f45 JM |
1541 | u##bits btrfs_get_token_##bits(const struct extent_buffer *eb, \ |
1542 | const void *ptr, unsigned long off, \ | |
1543 | struct btrfs_map_token *token); \ | |
1544 | void btrfs_set_token_##bits(struct extent_buffer *eb, const void *ptr, \ | |
18077bb4 LZ |
1545 | unsigned long off, u##bits val, \ |
1546 | struct btrfs_map_token *token); \ | |
1cbb1f45 JM |
1547 | static inline u##bits btrfs_get_##bits(const struct extent_buffer *eb, \ |
1548 | const void *ptr, \ | |
18077bb4 LZ |
1549 | unsigned long off) \ |
1550 | { \ | |
1551 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1552 | } \ | |
1cbb1f45 | 1553 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr,\ |
18077bb4 LZ |
1554 | unsigned long off, u##bits val) \ |
1555 | { \ | |
1556 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1557 | } | |
1558 | ||
1559 | DECLARE_BTRFS_SETGET_BITS(8) | |
1560 | DECLARE_BTRFS_SETGET_BITS(16) | |
1561 | DECLARE_BTRFS_SETGET_BITS(32) | |
1562 | DECLARE_BTRFS_SETGET_BITS(64) | |
1563 | ||
5f39d397 | 1564 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
1cbb1f45 JM |
1565 | static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ |
1566 | const type *s) \ | |
18077bb4 LZ |
1567 | { \ |
1568 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1569 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1570 | } \ | |
1571 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1572 | u##bits val) \ | |
1573 | { \ | |
1574 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1575 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1576 | } \ | |
1cbb1f45 JM |
1577 | static inline u##bits btrfs_token_##name(const struct extent_buffer *eb,\ |
1578 | const type *s, \ | |
18077bb4 LZ |
1579 | struct btrfs_map_token *token) \ |
1580 | { \ | |
1581 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1582 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1583 | } \ | |
1584 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
1585 | type *s, u##bits val, \ | |
1586 | struct btrfs_map_token *token) \ | |
1587 | { \ | |
1588 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1589 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
1590 | } | |
5f39d397 CM |
1591 | |
1592 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1cbb1f45 | 1593 | static inline u##bits btrfs_##name(const struct extent_buffer *eb) \ |
5f39d397 | 1594 | { \ |
1cbb1f45 | 1595 | const type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1596 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1597 | return res; \ |
5f39d397 CM |
1598 | } \ |
1599 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1600 | u##bits val) \ | |
1601 | { \ | |
727011e0 | 1602 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1603 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1604 | } |
9078a3e1 | 1605 | |
5f39d397 | 1606 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1cbb1f45 | 1607 | static inline u##bits btrfs_##name(const type *s) \ |
5f39d397 CM |
1608 | { \ |
1609 | return le##bits##_to_cpu(s->member); \ | |
1610 | } \ | |
1611 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1612 | { \ | |
1613 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1614 | } |
1615 | ||
eca152ed NB |
1616 | |
1617 | static inline u64 btrfs_device_total_bytes(struct extent_buffer *eb, | |
1618 | struct btrfs_dev_item *s) | |
1619 | { | |
1620 | BUILD_BUG_ON(sizeof(u64) != | |
1621 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
1622 | return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, | |
1623 | total_bytes)); | |
1624 | } | |
1625 | static inline void btrfs_set_device_total_bytes(struct extent_buffer *eb, | |
1626 | struct btrfs_dev_item *s, | |
1627 | u64 val) | |
1628 | { | |
1629 | BUILD_BUG_ON(sizeof(u64) != | |
1630 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
7dfb8be1 | 1631 | WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize)); |
eca152ed NB |
1632 | btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val); |
1633 | } | |
1634 | ||
1635 | ||
0b86a832 | 1636 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
0b86a832 CM |
1637 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
1638 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1639 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1640 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1641 | start_offset, 64); | |
0b86a832 CM |
1642 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1643 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1644 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1645 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1646 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1647 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1648 | |
8a4b83cc CM |
1649 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1650 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1651 | total_bytes, 64); | |
1652 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1653 | bytes_used, 64); | |
1654 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1655 | io_align, 32); | |
1656 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1657 | io_width, 32); | |
1658 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1659 | sector_size, 32); | |
1660 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1661 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1662 | dev_group, 32); | |
1663 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1664 | seek_speed, 8); | |
1665 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1666 | bandwidth, 8); | |
2b82032c YZ |
1667 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1668 | generation, 64); | |
8a4b83cc | 1669 | |
410ba3a2 | 1670 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1671 | { |
410ba3a2 | 1672 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1673 | } |
1674 | ||
1473b24e | 1675 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1676 | { |
1473b24e | 1677 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1678 | } |
1679 | ||
e17cade2 | 1680 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1681 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1682 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1683 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1684 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1685 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1686 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1687 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1688 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1689 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1690 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1691 | ||
e17cade2 CM |
1692 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1693 | { | |
1694 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1695 | } | |
1696 | ||
1697 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1698 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1699 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1700 | stripe_len, 64); | |
1701 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1702 | io_align, 32); | |
1703 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1704 | io_width, 32); | |
1705 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1706 | sector_size, 32); | |
1707 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1708 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1709 | num_stripes, 16); | |
321aecc6 CM |
1710 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1711 | sub_stripes, 16); | |
0b86a832 CM |
1712 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1713 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1714 | ||
1715 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1716 | int nr) | |
1717 | { | |
1718 | unsigned long offset = (unsigned long)c; | |
1719 | offset += offsetof(struct btrfs_chunk, stripe); | |
1720 | offset += nr * sizeof(struct btrfs_stripe); | |
1721 | return (struct btrfs_stripe *)offset; | |
1722 | } | |
1723 | ||
a443755f CM |
1724 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1725 | { | |
1726 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1727 | } | |
1728 | ||
0b86a832 CM |
1729 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1730 | struct btrfs_chunk *c, int nr) | |
1731 | { | |
1732 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1733 | } | |
1734 | ||
0b86a832 CM |
1735 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1736 | struct btrfs_chunk *c, int nr) | |
1737 | { | |
1738 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1739 | } | |
1740 | ||
5f39d397 CM |
1741 | /* struct btrfs_block_group_item */ |
1742 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1743 | used, 64); | |
1744 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1745 | used, 64); | |
0b86a832 CM |
1746 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1747 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1748 | |
1749 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1750 | struct btrfs_block_group_item, chunk_objectid, 64); |
1751 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1752 | struct btrfs_block_group_item, flags, 64); | |
1753 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1754 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1755 | |
208acb8c OS |
1756 | /* struct btrfs_free_space_info */ |
1757 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1758 | extent_count, 32); | |
1759 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1760 | ||
3954401f CM |
1761 | /* struct btrfs_inode_ref */ |
1762 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1763 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1764 | |
f186373f MF |
1765 | /* struct btrfs_inode_extref */ |
1766 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1767 | parent_objectid, 64); | |
1768 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1769 | name_len, 16); | |
1770 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1771 | ||
5f39d397 CM |
1772 | /* struct btrfs_inode_item */ |
1773 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1774 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1775 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1776 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1777 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1778 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1779 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1780 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1781 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1782 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1783 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1784 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1785 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1786 | generation, 64); | |
1787 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1788 | sequence, 64); | |
1789 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1790 | transid, 64); | |
1791 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1792 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1793 | nbytes, 64); | |
1794 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1795 | block_group, 64); | |
1796 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1797 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1798 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1799 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1800 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1801 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1802 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1803 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1804 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1805 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1806 | |
0b86a832 | 1807 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1808 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1809 | chunk_tree, 64); | |
1810 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1811 | chunk_objectid, 64); | |
1812 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1813 | chunk_offset, 64); | |
0b86a832 CM |
1814 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1815 | ||
231e88f4 | 1816 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
1817 | { |
1818 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 1819 | return (unsigned long)dev + ptr; |
e17cade2 CM |
1820 | } |
1821 | ||
5d4f98a2 YZ |
1822 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1823 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1824 | generation, 64); | |
1825 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1826 | |
5d4f98a2 YZ |
1827 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1828 | ||
1829 | ||
1830 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1831 | ||
1832 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1833 | struct btrfs_tree_block_info *item, | |
1834 | struct btrfs_disk_key *key) | |
1835 | { | |
1836 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1837 | } | |
1838 | ||
1839 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1840 | struct btrfs_tree_block_info *item, | |
1841 | struct btrfs_disk_key *key) | |
1842 | { | |
1843 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1844 | } | |
e20d96d6 | 1845 | |
5d4f98a2 YZ |
1846 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1847 | root, 64); | |
1848 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1849 | objectid, 64); | |
1850 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1851 | offset, 64); | |
1852 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1853 | count, 32); | |
1854 | ||
1855 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1856 | count, 32); | |
1857 | ||
1858 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1859 | type, 8); | |
1860 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1861 | offset, 64); | |
1862 | ||
1863 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1864 | { | |
1865 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1866 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1867 | return sizeof(struct btrfs_extent_inline_ref); | |
1868 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1869 | return sizeof(struct btrfs_shared_data_ref) + | |
1870 | sizeof(struct btrfs_extent_inline_ref); | |
1871 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1872 | return sizeof(struct btrfs_extent_data_ref) + | |
1873 | offsetof(struct btrfs_extent_inline_ref, offset); | |
5d4f98a2 YZ |
1874 | return 0; |
1875 | } | |
1876 | ||
1877 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1878 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1879 | generation, 64); | |
1880 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1881 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1882 | |
5f39d397 CM |
1883 | /* struct btrfs_node */ |
1884 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1885 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
1886 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
1887 | blockptr, 64); | |
1888 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
1889 | generation, 64); | |
e20d96d6 | 1890 | |
5f39d397 | 1891 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1892 | { |
5f39d397 CM |
1893 | unsigned long ptr; |
1894 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1895 | sizeof(struct btrfs_key_ptr) * nr; | |
1896 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1897 | } |
1898 | ||
5f39d397 CM |
1899 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1900 | int nr, u64 val) | |
cf27e1ee | 1901 | { |
5f39d397 CM |
1902 | unsigned long ptr; |
1903 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1904 | sizeof(struct btrfs_key_ptr) * nr; | |
1905 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1906 | } |
1907 | ||
74493f7a CM |
1908 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1909 | { | |
1910 | unsigned long ptr; | |
1911 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1912 | sizeof(struct btrfs_key_ptr) * nr; | |
1913 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1914 | } | |
1915 | ||
1916 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1917 | int nr, u64 val) | |
1918 | { | |
1919 | unsigned long ptr; | |
1920 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1921 | sizeof(struct btrfs_key_ptr) * nr; | |
1922 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1923 | } | |
1924 | ||
810191ff | 1925 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1926 | { |
5f39d397 CM |
1927 | return offsetof(struct btrfs_node, ptrs) + |
1928 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1929 | } |
1930 | ||
1cbb1f45 | 1931 | void btrfs_node_key(const struct extent_buffer *eb, |
e644d021 CM |
1932 | struct btrfs_disk_key *disk_key, int nr); |
1933 | ||
5f39d397 CM |
1934 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1935 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1936 | { |
5f39d397 CM |
1937 | unsigned long ptr; |
1938 | ptr = btrfs_node_key_ptr_offset(nr); | |
1939 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1940 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1941 | } |
1942 | ||
5f39d397 CM |
1943 | /* struct btrfs_item */ |
1944 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1945 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
1946 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
1947 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 1948 | |
5f39d397 | 1949 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1950 | { |
5f39d397 CM |
1951 | return offsetof(struct btrfs_leaf, items) + |
1952 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1953 | } |
1954 | ||
dd3cc16b | 1955 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 1956 | { |
5f39d397 | 1957 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1958 | } |
1959 | ||
1cbb1f45 | 1960 | static inline u32 btrfs_item_end(const struct extent_buffer *eb, |
5f39d397 | 1961 | struct btrfs_item *item) |
0783fcfc | 1962 | { |
5f39d397 | 1963 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1964 | } |
1965 | ||
1cbb1f45 | 1966 | static inline u32 btrfs_item_end_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1967 | { |
dd3cc16b | 1968 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1969 | } |
1970 | ||
1cbb1f45 | 1971 | static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1972 | { |
dd3cc16b | 1973 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1974 | } |
1975 | ||
1cbb1f45 | 1976 | static inline u32 btrfs_item_size_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1977 | { |
dd3cc16b | 1978 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1979 | } |
1980 | ||
1cbb1f45 | 1981 | static inline void btrfs_item_key(const struct extent_buffer *eb, |
5f39d397 | 1982 | struct btrfs_disk_key *disk_key, int nr) |
1d4f6404 | 1983 | { |
dd3cc16b | 1984 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1985 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1986 | } |
1987 | ||
5f39d397 CM |
1988 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1989 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1990 | { |
dd3cc16b | 1991 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1992 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1993 | } |
1994 | ||
e02119d5 CM |
1995 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1996 | ||
0660b5af CM |
1997 | /* |
1998 | * struct btrfs_root_ref | |
1999 | */ | |
2000 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
2001 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
2002 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
2003 | ||
5f39d397 | 2004 | /* struct btrfs_dir_item */ |
5103e947 | 2005 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
2006 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
2007 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 2008 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
2009 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
2010 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
2011 | data_len, 16); | |
2012 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
2013 | name_len, 16); | |
2014 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
2015 | transid, 64); | |
1d4f6404 | 2016 | |
1cbb1f45 JM |
2017 | static inline void btrfs_dir_item_key(const struct extent_buffer *eb, |
2018 | const struct btrfs_dir_item *item, | |
5f39d397 | 2019 | struct btrfs_disk_key *key) |
1d4f6404 | 2020 | { |
5f39d397 | 2021 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
2022 | } |
2023 | ||
5f39d397 CM |
2024 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
2025 | struct btrfs_dir_item *item, | |
1cbb1f45 | 2026 | const struct btrfs_disk_key *key) |
a8a2ee0c | 2027 | { |
5f39d397 | 2028 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
2029 | } |
2030 | ||
0af3d00b JB |
2031 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
2032 | num_entries, 64); | |
2033 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
2034 | num_bitmaps, 64); | |
2035 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
2036 | generation, 64); | |
2037 | ||
1cbb1f45 JM |
2038 | static inline void btrfs_free_space_key(const struct extent_buffer *eb, |
2039 | const struct btrfs_free_space_header *h, | |
0af3d00b JB |
2040 | struct btrfs_disk_key *key) |
2041 | { | |
2042 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2043 | } | |
2044 | ||
2045 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
2046 | struct btrfs_free_space_header *h, | |
1cbb1f45 | 2047 | const struct btrfs_disk_key *key) |
0af3d00b JB |
2048 | { |
2049 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2050 | } | |
2051 | ||
5f39d397 CM |
2052 | /* struct btrfs_disk_key */ |
2053 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2054 | objectid, 64); | |
2055 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2056 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2057 | |
e2fa7227 | 2058 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
310712b2 | 2059 | const struct btrfs_disk_key *disk) |
e2fa7227 CM |
2060 | { |
2061 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2062 | cpu->type = disk->type; |
e2fa7227 CM |
2063 | cpu->objectid = le64_to_cpu(disk->objectid); |
2064 | } | |
2065 | ||
2066 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
310712b2 | 2067 | const struct btrfs_key *cpu) |
e2fa7227 CM |
2068 | { |
2069 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2070 | disk->type = cpu->type; |
e2fa7227 CM |
2071 | disk->objectid = cpu_to_le64(cpu->objectid); |
2072 | } | |
2073 | ||
1cbb1f45 JM |
2074 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, |
2075 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2076 | { |
5f39d397 CM |
2077 | struct btrfs_disk_key disk_key; |
2078 | btrfs_node_key(eb, &disk_key, nr); | |
2079 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2080 | } |
2081 | ||
1cbb1f45 JM |
2082 | static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb, |
2083 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2084 | { |
5f39d397 CM |
2085 | struct btrfs_disk_key disk_key; |
2086 | btrfs_item_key(eb, &disk_key, nr); | |
2087 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2088 | } |
2089 | ||
1cbb1f45 JM |
2090 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, |
2091 | const struct btrfs_dir_item *item, | |
2092 | struct btrfs_key *key) | |
4d775673 | 2093 | { |
5f39d397 CM |
2094 | struct btrfs_disk_key disk_key; |
2095 | btrfs_dir_item_key(eb, item, &disk_key); | |
2096 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2097 | } |
2098 | ||
310712b2 | 2099 | static inline u8 btrfs_key_type(const struct btrfs_key *key) |
3768f368 | 2100 | { |
5f39d397 | 2101 | return key->type; |
3768f368 CM |
2102 | } |
2103 | ||
5f39d397 | 2104 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2105 | { |
5f39d397 | 2106 | key->type = val; |
3768f368 CM |
2107 | } |
2108 | ||
5f39d397 | 2109 | /* struct btrfs_header */ |
db94535d | 2110 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2111 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2112 | generation, 64); | |
2113 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2114 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2115 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2116 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2117 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2118 | generation, 64); | |
2119 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2120 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2121 | nritems, 32); | |
2122 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2123 | |
1cbb1f45 | 2124 | static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag) |
63b10fc4 CM |
2125 | { |
2126 | return (btrfs_header_flags(eb) & flag) == flag; | |
2127 | } | |
2128 | ||
2129 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2130 | { | |
2131 | u64 flags = btrfs_header_flags(eb); | |
2132 | btrfs_set_header_flags(eb, flags | flag); | |
2133 | return (flags & flag) == flag; | |
2134 | } | |
2135 | ||
2136 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2137 | { | |
2138 | u64 flags = btrfs_header_flags(eb); | |
2139 | btrfs_set_header_flags(eb, flags & ~flag); | |
2140 | return (flags & flag) == flag; | |
2141 | } | |
2142 | ||
1cbb1f45 | 2143 | static inline int btrfs_header_backref_rev(const struct extent_buffer *eb) |
5d4f98a2 YZ |
2144 | { |
2145 | u64 flags = btrfs_header_flags(eb); | |
2146 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2147 | } | |
2148 | ||
2149 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2150 | int rev) | |
2151 | { | |
2152 | u64 flags = btrfs_header_flags(eb); | |
2153 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2154 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2155 | btrfs_set_header_flags(eb, flags); | |
2156 | } | |
2157 | ||
0a4e5586 | 2158 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2159 | { |
fba6aa75 | 2160 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2161 | } |
2162 | ||
1cbb1f45 | 2163 | static inline unsigned long btrfs_header_chunk_tree_uuid(const struct extent_buffer *eb) |
e17cade2 | 2164 | { |
b308bc2f | 2165 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2166 | } |
2167 | ||
1cbb1f45 | 2168 | static inline int btrfs_is_leaf(const struct extent_buffer *eb) |
3768f368 | 2169 | { |
d397712b | 2170 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2171 | } |
2172 | ||
5f39d397 | 2173 | /* struct btrfs_root_item */ |
84234f3a YZ |
2174 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2175 | generation, 64); | |
5f39d397 | 2176 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2177 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2178 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2179 | |
84234f3a YZ |
2180 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2181 | generation, 64); | |
db94535d CM |
2182 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2183 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2184 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2185 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2186 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2187 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2188 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2189 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2190 | last_snapshot, 64); | |
8ea05e3a AB |
2191 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2192 | generation_v2, 64); | |
2193 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2194 | ctransid, 64); | |
2195 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2196 | otransid, 64); | |
2197 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2198 | stransid, 64); | |
2199 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2200 | rtransid, 64); | |
123abc88 | 2201 | |
1cbb1f45 | 2202 | static inline bool btrfs_root_readonly(const struct btrfs_root *root) |
b83cc969 | 2203 | { |
6ed3cf2c | 2204 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2205 | } |
2206 | ||
1cbb1f45 | 2207 | static inline bool btrfs_root_dead(const struct btrfs_root *root) |
521e0546 DS |
2208 | { |
2209 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2210 | } | |
2211 | ||
af31f5e5 CM |
2212 | /* struct btrfs_root_backup */ |
2213 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2214 | tree_root, 64); | |
2215 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2216 | tree_root_gen, 64); | |
2217 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2218 | tree_root_level, 8); | |
2219 | ||
2220 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2221 | chunk_root, 64); | |
2222 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2223 | chunk_root_gen, 64); | |
2224 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2225 | chunk_root_level, 8); | |
2226 | ||
2227 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2228 | extent_root, 64); | |
2229 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2230 | extent_root_gen, 64); | |
2231 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2232 | extent_root_level, 8); | |
2233 | ||
2234 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2235 | fs_root, 64); | |
2236 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2237 | fs_root_gen, 64); | |
2238 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2239 | fs_root_level, 8); | |
2240 | ||
2241 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2242 | dev_root, 64); | |
2243 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2244 | dev_root_gen, 64); | |
2245 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2246 | dev_root_level, 8); | |
2247 | ||
2248 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2249 | csum_root, 64); | |
2250 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2251 | csum_root_gen, 64); | |
2252 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2253 | csum_root_level, 8); | |
2254 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2255 | total_bytes, 64); | |
2256 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2257 | bytes_used, 64); | |
2258 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2259 | num_devices, 64); | |
2260 | ||
0940ebf6 ID |
2261 | /* struct btrfs_balance_item */ |
2262 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2263 | |
1cbb1f45 JM |
2264 | static inline void btrfs_balance_data(const struct extent_buffer *eb, |
2265 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2266 | struct btrfs_disk_balance_args *ba) |
2267 | { | |
2268 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2269 | } | |
2270 | ||
2271 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
1cbb1f45 JM |
2272 | struct btrfs_balance_item *bi, |
2273 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2274 | { |
2275 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2276 | } | |
2277 | ||
1cbb1f45 JM |
2278 | static inline void btrfs_balance_meta(const struct extent_buffer *eb, |
2279 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2280 | struct btrfs_disk_balance_args *ba) |
2281 | { | |
2282 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2283 | } | |
2284 | ||
2285 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
1cbb1f45 JM |
2286 | struct btrfs_balance_item *bi, |
2287 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2288 | { |
2289 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2290 | } | |
2291 | ||
1cbb1f45 JM |
2292 | static inline void btrfs_balance_sys(const struct extent_buffer *eb, |
2293 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2294 | struct btrfs_disk_balance_args *ba) |
2295 | { | |
2296 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2297 | } | |
2298 | ||
2299 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
1cbb1f45 JM |
2300 | struct btrfs_balance_item *bi, |
2301 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2302 | { |
2303 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2304 | } | |
2305 | ||
2306 | static inline void | |
2307 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
1cbb1f45 | 2308 | const struct btrfs_disk_balance_args *disk) |
0940ebf6 ID |
2309 | { |
2310 | memset(cpu, 0, sizeof(*cpu)); | |
2311 | ||
2312 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2313 | cpu->usage = le64_to_cpu(disk->usage); | |
2314 | cpu->devid = le64_to_cpu(disk->devid); | |
2315 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2316 | cpu->pend = le64_to_cpu(disk->pend); | |
2317 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2318 | cpu->vend = le64_to_cpu(disk->vend); | |
2319 | cpu->target = le64_to_cpu(disk->target); | |
2320 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2321 | cpu->limit = le64_to_cpu(disk->limit); |
ed0df618 DS |
2322 | cpu->stripes_min = le32_to_cpu(disk->stripes_min); |
2323 | cpu->stripes_max = le32_to_cpu(disk->stripes_max); | |
0940ebf6 ID |
2324 | } |
2325 | ||
2326 | static inline void | |
2327 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
1cbb1f45 | 2328 | const struct btrfs_balance_args *cpu) |
0940ebf6 ID |
2329 | { |
2330 | memset(disk, 0, sizeof(*disk)); | |
2331 | ||
2332 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2333 | disk->usage = cpu_to_le64(cpu->usage); | |
2334 | disk->devid = cpu_to_le64(cpu->devid); | |
2335 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2336 | disk->pend = cpu_to_le64(cpu->pend); | |
2337 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2338 | disk->vend = cpu_to_le64(cpu->vend); | |
2339 | disk->target = cpu_to_le64(cpu->target); | |
2340 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2341 | disk->limit = cpu_to_le64(cpu->limit); |
ed0df618 DS |
2342 | disk->stripes_min = cpu_to_le32(cpu->stripes_min); |
2343 | disk->stripes_max = cpu_to_le32(cpu->stripes_max); | |
0940ebf6 ID |
2344 | } |
2345 | ||
2346 | /* struct btrfs_super_block */ | |
db94535d | 2347 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2348 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2349 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2350 | generation, 64); | |
2351 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2352 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2353 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2354 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2355 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2356 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2357 | root_level, 8); | |
0b86a832 CM |
2358 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2359 | chunk_root, 64); | |
2360 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2361 | chunk_root_level, 8); |
2362 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2363 | log_root, 64); | |
c3027eb5 CM |
2364 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2365 | log_root_transid, 64); | |
e02119d5 CM |
2366 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2367 | log_root_level, 8); | |
db94535d CM |
2368 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2369 | total_bytes, 64); | |
2370 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2371 | bytes_used, 64); | |
5f39d397 CM |
2372 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2373 | sectorsize, 32); | |
2374 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2375 | nodesize, 32); | |
87ee04eb CM |
2376 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2377 | stripesize, 32); | |
5f39d397 CM |
2378 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2379 | root_dir_objectid, 64); | |
8a4b83cc CM |
2380 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2381 | num_devices, 64); | |
f2b636e8 JB |
2382 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2383 | compat_flags, 64); | |
2384 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2385 | compat_ro_flags, 64); |
f2b636e8 JB |
2386 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2387 | incompat_flags, 64); | |
607d432d JB |
2388 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2389 | csum_type, 16); | |
0af3d00b JB |
2390 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2391 | cache_generation, 64); | |
3cae210f | 2392 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2393 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2394 | uuid_tree_generation, 64); | |
607d432d | 2395 | |
1cbb1f45 | 2396 | static inline int btrfs_super_csum_size(const struct btrfs_super_block *s) |
607d432d | 2397 | { |
1104a885 DS |
2398 | u16 t = btrfs_super_csum_type(s); |
2399 | /* | |
2400 | * csum type is validated at mount time | |
2401 | */ | |
607d432d JB |
2402 | return btrfs_csum_sizes[t]; |
2403 | } | |
2e635a27 | 2404 | |
2e635a27 | 2405 | |
851cd173 LB |
2406 | /* |
2407 | * The leaf data grows from end-to-front in the node. | |
2408 | * this returns the address of the start of the last item, | |
2409 | * which is the stop of the leaf data stack | |
2410 | */ | |
1cbb1f45 JM |
2411 | static inline unsigned int leaf_data_end(const struct btrfs_fs_info *fs_info, |
2412 | const struct extent_buffer *leaf) | |
851cd173 LB |
2413 | { |
2414 | u32 nr = btrfs_header_nritems(leaf); | |
2415 | ||
2416 | if (nr == 0) | |
0b246afa | 2417 | return BTRFS_LEAF_DATA_SIZE(fs_info); |
851cd173 LB |
2418 | return btrfs_item_offset_nr(leaf, nr - 1); |
2419 | } | |
2420 | ||
5f39d397 CM |
2421 | /* struct btrfs_file_extent_item */ |
2422 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2423 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2424 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2425 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2426 | struct btrfs_file_extent_item, offset, 64); | |
2427 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2428 | struct btrfs_file_extent_item, generation, 64); | |
2429 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2430 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2431 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2432 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2433 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2434 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2435 | |
d397712b | 2436 | static inline unsigned long |
1cbb1f45 | 2437 | btrfs_file_extent_inline_start(const struct btrfs_file_extent_item *e) |
236454df | 2438 | { |
7ec20afb | 2439 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2440 | } |
2441 | ||
2442 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2443 | { | |
7ec20afb | 2444 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2445 | } |
2446 | ||
db94535d CM |
2447 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2448 | disk_bytenr, 64); | |
5f39d397 CM |
2449 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2450 | generation, 64); | |
db94535d CM |
2451 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2452 | disk_num_bytes, 64); | |
5f39d397 CM |
2453 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2454 | offset, 64); | |
db94535d CM |
2455 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2456 | num_bytes, 64); | |
c8b97818 CM |
2457 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2458 | ram_bytes, 64); | |
2459 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2460 | compression, 8); | |
2461 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2462 | encryption, 8); | |
2463 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2464 | other_encoding, 16); | |
2465 | ||
c8b97818 CM |
2466 | /* |
2467 | * this returns the number of bytes used by the item on disk, minus the | |
2468 | * size of any extent headers. If a file is compressed on disk, this is | |
2469 | * the compressed size | |
2470 | */ | |
1cbb1f45 JM |
2471 | static inline u32 btrfs_file_extent_inline_item_len( |
2472 | const struct extent_buffer *eb, | |
2473 | struct btrfs_item *e) | |
c8b97818 | 2474 | { |
7ec20afb | 2475 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2476 | } |
9f5fae2f | 2477 | |
733f4fbb | 2478 | /* btrfs_dev_stats_item */ |
1cbb1f45 JM |
2479 | static inline u64 btrfs_dev_stats_value(const struct extent_buffer *eb, |
2480 | const struct btrfs_dev_stats_item *ptr, | |
733f4fbb SB |
2481 | int index) |
2482 | { | |
2483 | u64 val; | |
2484 | ||
2485 | read_extent_buffer(eb, &val, | |
2486 | offsetof(struct btrfs_dev_stats_item, values) + | |
2487 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2488 | sizeof(val)); | |
2489 | return val; | |
2490 | } | |
2491 | ||
2492 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2493 | struct btrfs_dev_stats_item *ptr, | |
2494 | int index, u64 val) | |
2495 | { | |
2496 | write_extent_buffer(eb, &val, | |
2497 | offsetof(struct btrfs_dev_stats_item, values) + | |
2498 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2499 | sizeof(val)); | |
2500 | } | |
2501 | ||
630dc772 AJ |
2502 | /* btrfs_qgroup_status_item */ |
2503 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2504 | generation, 64); | |
2505 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2506 | version, 64); | |
2507 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2508 | flags, 64); | |
2f232036 JS |
2509 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2510 | rescan, 64); | |
630dc772 AJ |
2511 | |
2512 | /* btrfs_qgroup_info_item */ | |
2513 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2514 | generation, 64); | |
2515 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2516 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2517 | rfer_cmpr, 64); | |
2518 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2519 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2520 | excl_cmpr, 64); | |
2521 | ||
2522 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2523 | struct btrfs_qgroup_info_item, generation, 64); | |
2524 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2525 | rfer, 64); | |
2526 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2527 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2528 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2529 | excl, 64); | |
2530 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2531 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2532 | ||
2533 | /* btrfs_qgroup_limit_item */ | |
2534 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2535 | flags, 64); | |
2536 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2537 | max_rfer, 64); | |
2538 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2539 | max_excl, 64); | |
2540 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2541 | rsv_rfer, 64); | |
2542 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2543 | rsv_excl, 64); | |
2544 | ||
a2bff640 SB |
2545 | /* btrfs_dev_replace_item */ |
2546 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2547 | struct btrfs_dev_replace_item, src_devid, 64); | |
2548 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2549 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2550 | 64); | |
2551 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2552 | replace_state, 64); | |
2553 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2554 | time_started, 64); | |
2555 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2556 | time_stopped, 64); | |
2557 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2558 | num_write_errors, 64); | |
2559 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2560 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2561 | 64); | |
2562 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2563 | cursor_left, 64); | |
2564 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2565 | cursor_right, 64); | |
2566 | ||
2567 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2568 | struct btrfs_dev_replace_item, src_devid, 64); | |
2569 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2570 | struct btrfs_dev_replace_item, | |
2571 | cont_reading_from_srcdev_mode, 64); | |
2572 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2573 | struct btrfs_dev_replace_item, replace_state, 64); | |
2574 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2575 | struct btrfs_dev_replace_item, time_started, 64); | |
2576 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2577 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2578 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2579 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2580 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2581 | struct btrfs_dev_replace_item, | |
2582 | num_uncorrectable_read_errors, 64); | |
2583 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2584 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2585 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2586 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2587 | ||
4beb1b8b CM |
2588 | /* helper function to cast into the data area of the leaf. */ |
2589 | #define btrfs_item_ptr(leaf, slot, type) \ | |
3d9ec8c4 | 2590 | ((type *)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 CM |
2591 | btrfs_item_offset_nr(leaf, slot))) |
2592 | ||
2593 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
3d9ec8c4 | 2594 | ((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 | 2595 | btrfs_item_offset_nr(leaf, slot))) |
4beb1b8b | 2596 | |
9678c543 NB |
2597 | static inline u64 btrfs_name_hash(const char *name, int len) |
2598 | { | |
2599 | return crc32c((u32)~1, name, len); | |
2600 | } | |
2601 | ||
2602 | /* | |
2603 | * Figure the key offset of an extended inode ref | |
2604 | */ | |
2605 | static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name, | |
2606 | int len) | |
2607 | { | |
2608 | return (u64) crc32c(parent_objectid, name, len); | |
2609 | } | |
2610 | ||
67377734 JB |
2611 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2612 | { | |
2613 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2614 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2615 | } | |
2616 | ||
3b16a4e3 JB |
2617 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2618 | { | |
c62d2555 | 2619 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2620 | } |
2621 | ||
b18c6685 | 2622 | /* extent-tree.c */ |
28f75a0e | 2623 | |
167ce953 | 2624 | enum btrfs_inline_ref_type { |
bbe339cc DS |
2625 | BTRFS_REF_TYPE_INVALID, |
2626 | BTRFS_REF_TYPE_BLOCK, | |
2627 | BTRFS_REF_TYPE_DATA, | |
2628 | BTRFS_REF_TYPE_ANY, | |
167ce953 LB |
2629 | }; |
2630 | ||
2631 | int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb, | |
2632 | struct btrfs_extent_inline_ref *iref, | |
2633 | enum btrfs_inline_ref_type is_data); | |
2634 | ||
2ff7e61e | 2635 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_fs_info *fs_info, u64 csum_bytes); |
28f75a0e | 2636 | |
27965b6c | 2637 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_fs_info *fs_info, |
9e0baf60 | 2638 | unsigned num_items) |
16cdcec7 | 2639 | { |
70e7af24 | 2640 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2641 | } |
2642 | ||
2643 | /* | |
2644 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2645 | * COW. | |
2646 | */ | |
27965b6c | 2647 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info, |
07127184 JB |
2648 | unsigned num_items) |
2649 | { | |
70e7af24 | 2650 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2651 | } |
2652 | ||
7c861627 | 2653 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans); |
af9b8a0e | 2654 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans); |
9cfa3e34 FM |
2655 | void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, |
2656 | const u64 start); | |
2657 | void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); | |
f78c436c FM |
2658 | bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
2659 | void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); | |
2660 | void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg); | |
fa9c0d79 | 2661 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 | 2662 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
c79a70b1 | 2663 | unsigned long count); |
2ff7e61e | 2664 | int btrfs_async_run_delayed_refs(struct btrfs_fs_info *fs_info, |
31b9655f | 2665 | unsigned long count, u64 transid, int wait); |
2ff7e61e | 2666 | int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len); |
a22285a6 | 2667 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2ff7e61e | 2668 | struct btrfs_fs_info *fs_info, u64 bytenr, |
3173a18f | 2669 | u64 offset, int metadata, u64 *refs, u64 *flags); |
2ff7e61e | 2670 | int btrfs_pin_extent(struct btrfs_fs_info *fs_info, |
11833d66 | 2671 | u64 bytenr, u64 num, int reserved); |
2ff7e61e | 2672 | int btrfs_pin_extent_for_log_replay(struct btrfs_fs_info *fs_info, |
e688b725 | 2673 | u64 bytenr, u64 num_bytes); |
2ff7e61e | 2674 | int btrfs_exclude_logged_extents(struct btrfs_fs_info *fs_info, |
8c2a1a30 | 2675 | struct extent_buffer *eb); |
e4c3b2dc | 2676 | int btrfs_cross_ref_exist(struct btrfs_root *root, |
5d4f98a2 | 2677 | u64 objectid, u64 offset, u64 bytenr); |
d397712b CM |
2678 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2679 | struct btrfs_fs_info *info, | |
2680 | u64 bytenr); | |
758f2dfc | 2681 | void btrfs_get_block_group(struct btrfs_block_group_cache *cache); |
5d4f98a2 | 2682 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
4d75f8a9 | 2683 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
310712b2 OS |
2684 | struct btrfs_root *root, |
2685 | u64 parent, u64 root_objectid, | |
2686 | const struct btrfs_disk_key *key, | |
2687 | int level, u64 hint, | |
2688 | u64 empty_size); | |
f0486c68 YZ |
2689 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2690 | struct btrfs_root *root, | |
2691 | struct extent_buffer *buf, | |
5581a51a | 2692 | u64 parent, int last_ref); |
5d4f98a2 | 2693 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2694 | struct btrfs_root *root, u64 owner, |
5846a3c2 QW |
2695 | u64 offset, u64 ram_bytes, |
2696 | struct btrfs_key *ins); | |
5d4f98a2 | 2697 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2698 | u64 root_objectid, u64 owner, u64 offset, |
2699 | struct btrfs_key *ins); | |
18513091 | 2700 | int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, |
00361589 | 2701 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
e570fd27 | 2702 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2703 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2704 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2705 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2706 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2707 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2ff7e61e | 2708 | struct btrfs_fs_info *fs_info, |
5d4f98a2 | 2709 | u64 bytenr, u64 num_bytes, u64 flags, |
b1c79e09 | 2710 | int level, int is_data); |
31840ae1 | 2711 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2712 | struct btrfs_root *root, |
66d7e7f0 | 2713 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
b06c4bf5 | 2714 | u64 owner, u64 offset); |
5d4f98a2 | 2715 | |
2ff7e61e JM |
2716 | int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info, |
2717 | u64 start, u64 len, int delalloc); | |
2718 | int btrfs_free_and_pin_reserved_extent(struct btrfs_fs_info *fs_info, | |
e688b725 | 2719 | u64 start, u64 len); |
8b74c03e | 2720 | void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info); |
5ead2dd0 | 2721 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans); |
b18c6685 | 2722 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2723 | struct btrfs_root *root, |
31840ae1 | 2724 | u64 bytenr, u64 num_bytes, u64 parent, |
b06c4bf5 | 2725 | u64 root_objectid, u64 owner, u64 offset); |
5d4f98a2 | 2726 | |
21217054 | 2727 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans); |
9078a3e1 | 2728 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2ff7e61e | 2729 | struct btrfs_fs_info *fs_info); |
dcdf7f6d | 2730 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
2ff7e61e JM |
2731 | struct btrfs_fs_info *fs_info); |
2732 | int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr); | |
9078a3e1 | 2733 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
5b4aacef | 2734 | int btrfs_read_block_groups(struct btrfs_fs_info *info); |
6bccf3ab | 2735 | int btrfs_can_relocate(struct btrfs_fs_info *fs_info, u64 bytenr); |
0b86a832 | 2736 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
e7e02096 NB |
2737 | u64 bytes_used, u64 type, u64 chunk_offset, |
2738 | u64 size); | |
75cb379d | 2739 | void btrfs_add_raid_kobjects(struct btrfs_fs_info *fs_info); |
8eab77ff | 2740 | struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( |
7fd01182 FM |
2741 | struct btrfs_fs_info *fs_info, |
2742 | const u64 chunk_offset); | |
1a40e23b | 2743 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
5a98ec01 | 2744 | u64 group_start, struct extent_map *em); |
47ab2a6c | 2745 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
e33e17ee JM |
2746 | void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); |
2747 | void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); | |
6c686b35 | 2748 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans); |
1b86826d JM |
2749 | u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info); |
2750 | u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info); | |
2751 | u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info); | |
4184ea7f | 2752 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
2753 | |
2754 | enum btrfs_reserve_flush_enum { | |
2755 | /* If we are in the transaction, we can't flush anything.*/ | |
2756 | BTRFS_RESERVE_NO_FLUSH, | |
2757 | /* | |
2758 | * Flushing delalloc may cause deadlock somewhere, in this | |
2759 | * case, use FLUSH LIMIT | |
2760 | */ | |
2761 | BTRFS_RESERVE_FLUSH_LIMIT, | |
2762 | BTRFS_RESERVE_FLUSH_ALL, | |
2763 | }; | |
2764 | ||
f376df2b JB |
2765 | enum btrfs_flush_state { |
2766 | FLUSH_DELAYED_ITEMS_NR = 1, | |
2767 | FLUSH_DELAYED_ITEMS = 2, | |
413df725 JB |
2768 | FLUSH_DELAYED_REFS_NR = 3, |
2769 | FLUSH_DELAYED_REFS = 4, | |
2770 | FLUSH_DELALLOC = 5, | |
2771 | FLUSH_DELALLOC_WAIT = 6, | |
2772 | ALLOC_CHUNK = 7, | |
2773 | COMMIT_TRANS = 8, | |
f376df2b JB |
2774 | }; |
2775 | ||
04f4f916 | 2776 | int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes); |
364ecf36 QW |
2777 | int btrfs_check_data_free_space(struct inode *inode, |
2778 | struct extent_changeset **reserved, u64 start, u64 len); | |
bc42bda2 QW |
2779 | void btrfs_free_reserved_data_space(struct inode *inode, |
2780 | struct extent_changeset *reserved, u64 start, u64 len); | |
2781 | void btrfs_delalloc_release_space(struct inode *inode, | |
43b18595 QW |
2782 | struct extent_changeset *reserved, |
2783 | u64 start, u64 len, bool qgroup_free); | |
51773bec QW |
2784 | void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, |
2785 | u64 len); | |
4fbcdf66 | 2786 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
d5c12070 MX |
2787 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2788 | struct btrfs_block_rsv *rsv, | |
c4c129db | 2789 | int nitems, bool use_global_rsv); |
2ff7e61e | 2790 | void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info, |
7775c818 | 2791 | struct btrfs_block_rsv *rsv); |
43b18595 QW |
2792 | void btrfs_delalloc_release_extents(struct btrfs_inode *inode, u64 num_bytes, |
2793 | bool qgroup_free); | |
8b62f87b | 2794 | |
9f3db423 | 2795 | int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes); |
43b18595 QW |
2796 | void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes, |
2797 | bool qgroup_free); | |
364ecf36 QW |
2798 | int btrfs_delalloc_reserve_space(struct inode *inode, |
2799 | struct extent_changeset **reserved, u64 start, u64 len); | |
66d8f3dd | 2800 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
2ff7e61e | 2801 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info, |
66d8f3dd | 2802 | unsigned short type); |
69fe2d75 JB |
2803 | void btrfs_init_metadata_block_rsv(struct btrfs_fs_info *fs_info, |
2804 | struct btrfs_block_rsv *rsv, | |
2805 | unsigned short type); | |
2ff7e61e | 2806 | void btrfs_free_block_rsv(struct btrfs_fs_info *fs_info, |
f0486c68 | 2807 | struct btrfs_block_rsv *rsv); |
4a92b1b8 | 2808 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
2809 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
2810 | enum btrfs_reserve_flush_enum flush); | |
2ff7e61e | 2811 | int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_factor); |
36ba022a | 2812 | int btrfs_block_rsv_refill(struct btrfs_root *root, |
08e007d2 MX |
2813 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
2814 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 | 2815 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
25d609f8 | 2816 | struct btrfs_block_rsv *dst_rsv, u64 num_bytes, |
3a584174 | 2817 | bool update_size); |
d52be818 JB |
2818 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
2819 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
2820 | int min_factor); | |
2ff7e61e | 2821 | void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info, |
f0486c68 YZ |
2822 | struct btrfs_block_rsv *block_rsv, |
2823 | u64 num_bytes); | |
ba2c4d4e JB |
2824 | void btrfs_delayed_refs_rsv_release(struct btrfs_fs_info *fs_info, int nr); |
2825 | void btrfs_update_delayed_refs_rsv(struct btrfs_trans_handle *trans); | |
2826 | int btrfs_delayed_refs_rsv_refill(struct btrfs_fs_info *fs_info, | |
2827 | enum btrfs_reserve_flush_enum flush); | |
2828 | void btrfs_migrate_to_delayed_refs_rsv(struct btrfs_fs_info *fs_info, | |
2829 | struct btrfs_block_rsv *src, | |
2830 | u64 num_bytes); | |
c83488af | 2831 | int btrfs_inc_block_group_ro(struct btrfs_block_group_cache *cache); |
2ff7e61e | 2832 | void btrfs_dec_block_group_ro(struct btrfs_block_group_cache *cache); |
0af3d00b | 2833 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2834 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
2ff7e61e | 2835 | int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, |
acce952b | 2836 | u64 start, u64 end); |
2ff7e61e | 2837 | int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, |
1edb647b | 2838 | u64 num_bytes, u64 *actual_bytes); |
43a7e99d | 2839 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, u64 type); |
2ff7e61e | 2840 | int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range); |
acce952b | 2841 | |
c59021f8 | 2842 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2843 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2844 | struct btrfs_fs_info *fs_info); | |
ea14b57f DS |
2845 | int btrfs_start_write_no_snapshotting(struct btrfs_root *root); |
2846 | void btrfs_end_write_no_snapshotting(struct btrfs_root *root); | |
0bc19f90 | 2847 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
451a2c13 | 2848 | void check_system_chunk(struct btrfs_trans_handle *trans, const u64 type); |
a5ed9182 | 2849 | u64 add_new_free_space(struct btrfs_block_group_cache *block_group, |
4457c1c7 | 2850 | u64 start, u64 end); |
031f24da | 2851 | void btrfs_mark_bg_unused(struct btrfs_block_group_cache *bg); |
a5ed9182 | 2852 | |
dee26a9f | 2853 | /* ctree.c */ |
310712b2 | 2854 | int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key, |
5d4f98a2 | 2855 | int level, int *slot); |
310712b2 | 2856 | int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2); |
0b86a832 CM |
2857 | int btrfs_previous_item(struct btrfs_root *root, |
2858 | struct btrfs_path *path, u64 min_objectid, | |
2859 | int type); | |
ade2e0b3 WS |
2860 | int btrfs_previous_extent_item(struct btrfs_root *root, |
2861 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
2862 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
2863 | struct btrfs_path *path, | |
310712b2 | 2864 | const struct btrfs_key *new_key); |
925baedd CM |
2865 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2866 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
84f7d8e6 | 2867 | struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root); |
e7a84565 | 2868 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 2869 | struct btrfs_key *key, int lowest_level, |
de78b51a | 2870 | u64 min_trans); |
3f157a2f | 2871 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 2872 | struct btrfs_path *path, |
3f157a2f | 2873 | u64 min_trans); |
7069830a AB |
2874 | enum btrfs_compare_tree_result { |
2875 | BTRFS_COMPARE_TREE_NEW, | |
2876 | BTRFS_COMPARE_TREE_DELETED, | |
2877 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 2878 | BTRFS_COMPARE_TREE_SAME, |
7069830a | 2879 | }; |
ee8c494f | 2880 | typedef int (*btrfs_changed_cb_t)(struct btrfs_path *left_path, |
7069830a AB |
2881 | struct btrfs_path *right_path, |
2882 | struct btrfs_key *key, | |
2883 | enum btrfs_compare_tree_result result, | |
2884 | void *ctx); | |
2885 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
2886 | struct btrfs_root *right_root, | |
2887 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
2888 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2889 | struct btrfs_root *root, struct extent_buffer *buf, | |
2890 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2891 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2892 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2893 | struct btrfs_root *root, | |
2894 | struct extent_buffer *buf, | |
2895 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2896 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2897 | struct extent_buffer *buf); | |
2ff7e61e | 2898 | void btrfs_extend_item(struct btrfs_fs_info *fs_info, struct btrfs_path *path, |
143bede5 | 2899 | u32 data_size); |
2ff7e61e JM |
2900 | void btrfs_truncate_item(struct btrfs_fs_info *fs_info, |
2901 | struct btrfs_path *path, u32 new_size, int from_end); | |
459931ec CM |
2902 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2903 | struct btrfs_root *root, | |
2904 | struct btrfs_path *path, | |
310712b2 | 2905 | const struct btrfs_key *new_key, |
459931ec | 2906 | unsigned long split_offset); |
ad48fd75 YZ |
2907 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2908 | struct btrfs_root *root, | |
2909 | struct btrfs_path *path, | |
310712b2 | 2910 | const struct btrfs_key *new_key); |
e33d5c3d KN |
2911 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
2912 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
310712b2 OS |
2913 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2914 | const struct btrfs_key *key, struct btrfs_path *p, | |
2915 | int ins_len, int cow); | |
2916 | int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key, | |
5d9e75c4 | 2917 | struct btrfs_path *p, u64 time_seq); |
2f38b3e1 | 2918 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
310712b2 OS |
2919 | const struct btrfs_key *key, |
2920 | struct btrfs_path *p, int find_higher, | |
2921 | int return_any); | |
6702ed49 | 2922 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2923 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 2924 | int start_slot, u64 *last_ret, |
a6b6e75e | 2925 | struct btrfs_key *progress); |
b3b4aa74 | 2926 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2927 | struct btrfs_path *btrfs_alloc_path(void); |
2928 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2929 | void btrfs_set_path_blocking(struct btrfs_path *p); |
b4ce94de CM |
2930 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2931 | ||
85e21bac CM |
2932 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2933 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2934 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2935 | struct btrfs_root *root, | |
2936 | struct btrfs_path *path) | |
2937 | { | |
2938 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2939 | } | |
2940 | ||
afe5fea7 | 2941 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
310712b2 | 2942 | const struct btrfs_key *cpu_key, u32 *data_size, |
143bede5 | 2943 | u32 total_data, u32 total_size, int nr); |
310712b2 OS |
2944 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2945 | const struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2946 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2947 | struct btrfs_root *root, | |
2948 | struct btrfs_path *path, | |
310712b2 OS |
2949 | const struct btrfs_key *cpu_key, u32 *data_size, |
2950 | int nr); | |
9c58309d CM |
2951 | |
2952 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2953 | struct btrfs_root *root, | |
2954 | struct btrfs_path *path, | |
310712b2 | 2955 | const struct btrfs_key *key, |
9c58309d CM |
2956 | u32 data_size) |
2957 | { | |
2958 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2959 | } | |
2960 | ||
234b63a0 | 2961 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 2962 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2963 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2964 | u64 time_seq); | |
1c8f52a5 AB |
2965 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2966 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2967 | { |
2968 | ++p->slots[0]; | |
2969 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2970 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2971 | return 0; |
2972 | } | |
1c8f52a5 AB |
2973 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2974 | { | |
2975 | return btrfs_next_old_item(root, p, 0); | |
2976 | } | |
2ff7e61e JM |
2977 | int btrfs_leaf_free_space(struct btrfs_fs_info *fs_info, |
2978 | struct extent_buffer *leaf); | |
2c536799 JM |
2979 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
2980 | struct btrfs_block_rsv *block_rsv, | |
2981 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
2982 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2983 | struct btrfs_root *root, | |
2984 | struct extent_buffer *node, | |
2985 | struct extent_buffer *parent); | |
7841cb28 DS |
2986 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2987 | { | |
2988 | /* | |
afcdd129 | 2989 | * Do it this way so we only ever do one test_bit in the normal case. |
7841cb28 | 2990 | */ |
afcdd129 JB |
2991 | if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) { |
2992 | if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags)) | |
2993 | return 2; | |
2994 | return 1; | |
2995 | } | |
2996 | return 0; | |
7841cb28 | 2997 | } |
babbf170 MX |
2998 | |
2999 | /* | |
3000 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
3001 | * anything except sleeping. This function is used to check the status of | |
3002 | * the fs. | |
3003 | */ | |
2ff7e61e | 3004 | static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info) |
babbf170 | 3005 | { |
1751e8a6 | 3006 | return fs_info->sb->s_flags & SB_RDONLY || btrfs_fs_closing(fs_info); |
babbf170 MX |
3007 | } |
3008 | ||
6c41761f DS |
3009 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
3010 | { | |
837d5b6e | 3011 | kfree(fs_info->balance_ctl); |
6c41761f DS |
3012 | kfree(fs_info->delayed_root); |
3013 | kfree(fs_info->extent_root); | |
3014 | kfree(fs_info->tree_root); | |
3015 | kfree(fs_info->chunk_root); | |
3016 | kfree(fs_info->dev_root); | |
3017 | kfree(fs_info->csum_root); | |
bcef60f2 | 3018 | kfree(fs_info->quota_root); |
d8f98039 | 3019 | kfree(fs_info->uuid_root); |
70f6d82e | 3020 | kfree(fs_info->free_space_root); |
6c41761f DS |
3021 | kfree(fs_info->super_copy); |
3022 | kfree(fs_info->super_for_commit); | |
f667aef6 | 3023 | security_free_mnt_opts(&fs_info->security_opts); |
a8fd1f71 | 3024 | kvfree(fs_info); |
6c41761f | 3025 | } |
7841cb28 | 3026 | |
097b8a7c JS |
3027 | /* tree mod log functions from ctree.c */ |
3028 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3029 | struct seq_list *elem); | |
3030 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3031 | struct seq_list *elem); | |
5b6602e7 | 3032 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 3033 | |
dee26a9f | 3034 | /* root-item.c */ |
6025c19f LF |
3035 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, u64 root_id, |
3036 | u64 ref_id, u64 dirid, u64 sequence, const char *name, | |
3037 | int name_len); | |
3ee1c553 LF |
3038 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, u64 root_id, |
3039 | u64 ref_id, u64 dirid, u64 *sequence, const char *name, | |
3040 | int name_len); | |
1cd5447e | 3041 | int btrfs_del_root(struct btrfs_trans_handle *trans, |
ab9ce7d4 | 3042 | const struct btrfs_key *key); |
310712b2 OS |
3043 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3044 | const struct btrfs_key *key, | |
3045 | struct btrfs_root_item *item); | |
b45a9d8b JM |
3046 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
3047 | struct btrfs_root *root, | |
3048 | struct btrfs_key *key, | |
3049 | struct btrfs_root_item *item); | |
310712b2 | 3050 | int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key, |
cb517eab MX |
3051 | struct btrfs_path *path, struct btrfs_root_item *root_item, |
3052 | struct btrfs_key *root_key); | |
6bccf3ab | 3053 | int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info); |
bf5f32ec MF |
3054 | void btrfs_set_root_node(struct btrfs_root_item *item, |
3055 | struct extent_buffer *node); | |
08fe4db1 | 3056 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
3057 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
3058 | struct btrfs_root *root); | |
08fe4db1 | 3059 | |
07b30a49 | 3060 | /* uuid-tree.c */ |
cdb345a8 | 3061 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 3062 | u64 subid); |
d1957791 | 3063 | int btrfs_uuid_tree_remove(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 3064 | u64 subid); |
70f80175 SB |
3065 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
3066 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
3067 | u64)); | |
07b30a49 | 3068 | |
dee26a9f | 3069 | /* dir-item.c */ |
9c52057c CM |
3070 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
3071 | const char *name, int name_len); | |
684572df | 3072 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, const char *name, |
8e7611cf | 3073 | int name_len, struct btrfs_inode *dir, |
aec7477b | 3074 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3075 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3076 | struct btrfs_root *root, | |
3077 | struct btrfs_path *path, u64 dir, | |
3078 | const char *name, int name_len, | |
3079 | int mod); | |
3080 | struct btrfs_dir_item * | |
3081 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3082 | struct btrfs_root *root, | |
3083 | struct btrfs_path *path, u64 dir, | |
3084 | u64 objectid, const char *name, int name_len, | |
3085 | int mod); | |
4df27c4d YZ |
3086 | struct btrfs_dir_item * |
3087 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3088 | struct btrfs_path *path, u64 dirid, | |
3089 | const char *name, int name_len); | |
7e38180e CM |
3090 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3091 | struct btrfs_root *root, | |
3092 | struct btrfs_path *path, | |
3093 | struct btrfs_dir_item *di); | |
5103e947 | 3094 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3095 | struct btrfs_root *root, |
3096 | struct btrfs_path *path, u64 objectid, | |
3097 | const char *name, u16 name_len, | |
3098 | const void *data, u16 data_len); | |
5103e947 JB |
3099 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3100 | struct btrfs_root *root, | |
3101 | struct btrfs_path *path, u64 dir, | |
3102 | const char *name, u16 name_len, | |
3103 | int mod); | |
2ff7e61e | 3104 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info, |
5f5bc6b1 FM |
3105 | struct btrfs_path *path, |
3106 | const char *name, | |
3107 | int name_len); | |
7b128766 JB |
3108 | |
3109 | /* orphan.c */ | |
3110 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3111 | struct btrfs_root *root, u64 offset); | |
3112 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3113 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3114 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3115 | |
dee26a9f | 3116 | /* inode-item.c */ |
3954401f CM |
3117 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3118 | struct btrfs_root *root, | |
3119 | const char *name, int name_len, | |
aec7477b | 3120 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3121 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3122 | struct btrfs_root *root, | |
3123 | const char *name, int name_len, | |
aec7477b | 3124 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
3125 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3126 | struct btrfs_root *root, | |
3127 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3128 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3129 | *root, struct btrfs_path *path, |
3130 | struct btrfs_key *location, int mod); | |
dee26a9f | 3131 | |
f186373f MF |
3132 | struct btrfs_inode_extref * |
3133 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3134 | struct btrfs_root *root, | |
3135 | struct btrfs_path *path, | |
3136 | const char *name, int name_len, | |
3137 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3138 | int cow); | |
3139 | ||
1f250e92 FM |
3140 | int btrfs_find_name_in_backref(struct extent_buffer *leaf, int slot, |
3141 | const char *name, | |
3142 | int name_len, struct btrfs_inode_ref **ref_ret); | |
3143 | int btrfs_find_name_in_ext_backref(struct extent_buffer *leaf, int slot, | |
f186373f MF |
3144 | u64 ref_objectid, const char *name, |
3145 | int name_len, | |
3146 | struct btrfs_inode_extref **extref_ret); | |
3147 | ||
dee26a9f | 3148 | /* file-item.c */ |
facc8a22 | 3149 | struct btrfs_dio_private; |
459931ec | 3150 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
5b4aacef | 3151 | struct btrfs_fs_info *fs_info, u64 bytenr, u64 len); |
4e4cbee9 CH |
3152 | blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u32 *dst); |
3153 | blk_status_t btrfs_lookup_bio_sums_dio(struct inode *inode, struct bio *bio, | |
2ff7e61e | 3154 | u64 logical_offset); |
b18c6685 | 3155 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3156 | struct btrfs_root *root, |
3157 | u64 objectid, u64 pos, | |
3158 | u64 disk_offset, u64 disk_num_bytes, | |
3159 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3160 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3161 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3162 | struct btrfs_root *root, | |
3163 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3164 | u64 bytenr, int mod); |
065631f6 | 3165 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3166 | struct btrfs_root *root, |
e6dcd2dc | 3167 | struct btrfs_ordered_sum *sums); |
4e4cbee9 | 3168 | blk_status_t btrfs_csum_one_bio(struct inode *inode, struct bio *bio, |
2ff7e61e | 3169 | u64 file_start, int contig); |
a2de733c AJ |
3170 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3171 | struct list_head *list, int search_commit); | |
9cdc5124 | 3172 | void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode, |
7ffbb598 FM |
3173 | const struct btrfs_path *path, |
3174 | struct btrfs_file_extent_item *fi, | |
3175 | const bool new_inline, | |
3176 | struct extent_map *em); | |
3177 | ||
39279cc3 | 3178 | /* inode.c */ |
fc4f21b1 NB |
3179 | struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, |
3180 | struct page *page, size_t pg_offset, u64 start, | |
3181 | u64 len, int create); | |
00361589 | 3182 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3183 | u64 *orig_start, u64 *orig_block_len, |
3184 | u64 *ram_bytes); | |
4881ee5a | 3185 | |
2b877331 NB |
3186 | void __btrfs_del_delalloc_inode(struct btrfs_root *root, |
3187 | struct btrfs_inode *inode); | |
3de4586c | 3188 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
70ddc553 | 3189 | int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index); |
e02119d5 CM |
3190 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3191 | struct btrfs_root *root, | |
4ec5934e | 3192 | struct btrfs_inode *dir, struct btrfs_inode *inode, |
e02119d5 CM |
3193 | const char *name, int name_len); |
3194 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
db0a669f | 3195 | struct btrfs_inode *parent_inode, struct btrfs_inode *inode, |
e02119d5 | 3196 | const char *name, int name_len, int add_backref, u64 index); |
f60a2364 | 3197 | int btrfs_delete_subvolume(struct inode *dir, struct dentry *dentry); |
9703fefe | 3198 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
2aaa6655 | 3199 | int front); |
e02119d5 CM |
3200 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3201 | struct btrfs_root *root, | |
3202 | struct inode *inode, u64 new_size, | |
3203 | u32 min_type); | |
3204 | ||
3cd24c69 | 3205 | int btrfs_start_delalloc_snapshot(struct btrfs_root *root); |
82b3e53b | 3206 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int nr); |
2ac55d41 | 3207 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
e3b8a485 | 3208 | unsigned int extra_bits, |
ba8b04c1 | 3209 | struct extent_state **cached_state, int dedupe); |
d2fb3437 | 3210 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3211 | struct btrfs_root *new_root, |
3212 | struct btrfs_root *parent_root, | |
3213 | u64 new_dirid); | |
c629732d | 3214 | void btrfs_set_delalloc_extent(struct inode *inode, struct extent_state *state, |
e06a1fc9 | 3215 | unsigned *bits); |
a36bb5f9 NB |
3216 | void btrfs_clear_delalloc_extent(struct inode *inode, |
3217 | struct extent_state *state, unsigned *bits); | |
5c848198 NB |
3218 | void btrfs_merge_delalloc_extent(struct inode *inode, struct extent_state *new, |
3219 | struct extent_state *other); | |
abbb55f4 NB |
3220 | void btrfs_split_delalloc_extent(struct inode *inode, |
3221 | struct extent_state *orig, u64 split); | |
da12fe54 NB |
3222 | int btrfs_bio_fits_in_stripe(struct page *page, size_t size, struct bio *bio, |
3223 | unsigned long bio_flags); | |
5cdc84bf | 3224 | void btrfs_set_range_writeback(struct extent_io_tree *tree, u64 start, u64 end); |
a528a241 | 3225 | vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf); |
9ebefb18 | 3226 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3227 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3228 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3229 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3230 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3231 | int btrfs_drop_inode(struct inode *inode); |
f5c29bd9 | 3232 | int __init btrfs_init_cachep(void); |
e67c718b | 3233 | void __cold btrfs_destroy_cachep(void); |
4222ea71 FM |
3234 | struct inode *btrfs_iget_path(struct super_block *s, struct btrfs_key *location, |
3235 | struct btrfs_root *root, int *new, | |
3236 | struct btrfs_path *path); | |
1a54ef8c | 3237 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3238 | struct btrfs_root *root, int *was_new); |
fc4f21b1 | 3239 | struct extent_map *btrfs_get_extent(struct btrfs_inode *inode, |
de2c6615 LB |
3240 | struct page *page, size_t pg_offset, |
3241 | u64 start, u64 end, int create); | |
a52d9a80 CM |
3242 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
3243 | struct btrfs_root *root, | |
3244 | struct inode *inode); | |
be6aef60 JB |
3245 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3246 | struct btrfs_root *root, struct inode *inode); | |
73f2e545 NB |
3247 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, |
3248 | struct btrfs_inode *inode); | |
66b4ffd1 | 3249 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
a41ad394 | 3250 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
24bbcf04 | 3251 | void btrfs_add_delayed_iput(struct inode *inode); |
2ff7e61e | 3252 | void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info); |
efa56464 YZ |
3253 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3254 | u64 start, u64 num_bytes, u64 min_size, | |
3255 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3256 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3257 | struct btrfs_trans_handle *trans, int mode, | |
3258 | u64 start, u64 num_bytes, u64 min_size, | |
3259 | loff_t actual_len, u64 *alloc_hint); | |
5eaad97a NB |
3260 | int btrfs_run_delalloc_range(void *private_data, struct page *locked_page, |
3261 | u64 start, u64 end, int *page_started, unsigned long *nr_written, | |
3262 | struct writeback_control *wbc); | |
d75855b4 | 3263 | int btrfs_writepage_cow_fixup(struct page *page, u64 start, u64 end); |
7087a9d8 | 3264 | void btrfs_writepage_endio_finish_ordered(struct page *page, u64 start, |
c629732d | 3265 | u64 end, int uptodate); |
82d339d9 | 3266 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
3267 | |
3268 | /* ioctl.c */ | |
3269 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3270 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
d5131b65 | 3271 | int btrfs_ioctl_get_supported_features(void __user *arg); |
7b6a221e | 3272 | void btrfs_sync_inode_flags_to_i_flags(struct inode *inode); |
dd5f9615 | 3273 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3274 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3275 | struct btrfs_ioctl_defrag_range_args *range, | |
3276 | u64 newer_than, unsigned long max_pages); | |
008ef096 DS |
3277 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3278 | struct btrfs_ioctl_space_info *space); | |
3279 | void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info, | |
35a3621b SB |
3280 | struct btrfs_ioctl_balance_args *bargs); |
3281 | ||
39279cc3 | 3282 | /* file.c */ |
f5c29bd9 | 3283 | int __init btrfs_auto_defrag_init(void); |
e67c718b | 3284 | void __cold btrfs_auto_defrag_exit(void); |
4cb5300b | 3285 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
6158e1ce | 3286 | struct btrfs_inode *inode); |
4cb5300b | 3287 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
26176e7c | 3288 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3289 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
dcdbc059 | 3290 | void btrfs_drop_extent_cache(struct btrfs_inode *inode, u64 start, u64 end, |
7014cdb4 | 3291 | int skip_pinned); |
828c0950 | 3292 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3293 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3294 | struct btrfs_root *root, struct inode *inode, | |
3295 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3296 | u64 *drop_end, int drop_cache, |
3297 | int replace_extent, | |
3298 | u32 extent_item_size, | |
3299 | int *key_inserted); | |
5dc562c5 JB |
3300 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3301 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3302 | u64 end, int drop_cache); |
d899e052 | 3303 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
7a6d7067 | 3304 | struct btrfs_inode *inode, u64 start, u64 end); |
6bf13c0c | 3305 | int btrfs_release_file(struct inode *inode, struct file *file); |
2ff7e61e JM |
3306 | int btrfs_dirty_pages(struct inode *inode, struct page **pages, |
3307 | size_t num_pages, loff_t pos, size_t write_bytes, | |
be1a12a0 | 3308 | struct extent_state **cached); |
728404da | 3309 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
42ec3d4c DW |
3310 | loff_t btrfs_remap_file_range(struct file *file_in, loff_t pos_in, |
3311 | struct file *file_out, loff_t pos_out, | |
3312 | loff_t len, unsigned int remap_flags); | |
6bf13c0c | 3313 | |
6702ed49 CM |
3314 | /* tree-defrag.c */ |
3315 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3316 | struct btrfs_root *root); |
58176a96 JB |
3317 | |
3318 | /* sysfs.c */ | |
f5c29bd9 | 3319 | int __init btrfs_init_sysfs(void); |
e67c718b | 3320 | void __cold btrfs_exit_sysfs(void); |
96f3136e | 3321 | int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info); |
6618a59b | 3322 | void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info); |
58176a96 | 3323 | |
edbd8d4e | 3324 | /* super.c */ |
2ff7e61e | 3325 | int btrfs_parse_options(struct btrfs_fs_info *info, char *options, |
96da0919 | 3326 | unsigned long new_flags); |
6bf13c0c | 3327 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 | 3328 | |
e67c718b | 3329 | static inline __printf(2, 3) __cold |
2fd57fcb AB |
3330 | void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
3331 | { | |
3332 | } | |
3333 | ||
533574c6 JP |
3334 | #ifdef CONFIG_PRINTK |
3335 | __printf(2, 3) | |
e67c718b | 3336 | __cold |
c2cf52eb | 3337 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 | 3338 | #else |
2fd57fcb AB |
3339 | #define btrfs_printk(fs_info, fmt, args...) \ |
3340 | btrfs_no_printk(fs_info, fmt, ##args) | |
533574c6 JP |
3341 | #endif |
3342 | ||
c2cf52eb SK |
3343 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3344 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3345 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3346 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3347 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3348 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3349 | #define btrfs_err(fs_info, fmt, args...) \ | |
3350 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3351 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3352 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3353 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3354 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3355 | #define btrfs_info(fs_info, fmt, args...) \ | |
3356 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3357 | |
08a84e25 DS |
3358 | /* |
3359 | * Wrappers that use printk_in_rcu | |
3360 | */ | |
3361 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3362 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3363 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3364 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3365 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3366 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3367 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3368 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3369 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3370 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3371 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3372 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3373 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3374 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3375 | ||
24aa6b41 DS |
3376 | /* |
3377 | * Wrappers that use a ratelimited printk_in_rcu | |
3378 | */ | |
3379 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3380 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3381 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3382 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3383 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3384 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3385 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3386 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3387 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3388 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3389 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3390 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3391 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3392 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3393 | ||
1dd6d7ca DS |
3394 | /* |
3395 | * Wrappers that use a ratelimited printk | |
3396 | */ | |
3397 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3398 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3399 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3400 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3401 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3402 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3403 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3404 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3405 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3406 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3407 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3408 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3409 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3410 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
897a41b1 JM |
3411 | |
3412 | #if defined(CONFIG_DYNAMIC_DEBUG) | |
3413 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3414 | do { \ | |
3415 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3416 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3417 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args); \ | |
3418 | } while (0) | |
3419 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ | |
3420 | do { \ | |
3421 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3422 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3423 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args); \ | |
3424 | } while (0) | |
3425 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ | |
3426 | do { \ | |
3427 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3428 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3429 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, \ | |
3430 | ##args);\ | |
3431 | } while (0) | |
3432 | #define btrfs_debug_rl(fs_info, fmt, args...) \ | |
3433 | do { \ | |
3434 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3435 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3436 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, \ | |
3437 | ##args); \ | |
3438 | } while (0) | |
3439 | #elif defined(DEBUG) | |
c2cf52eb SK |
3440 | #define btrfs_debug(fs_info, fmt, args...) \ |
3441 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3442 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3443 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3444 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3445 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3446 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3447 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3448 | #else |
3449 | #define btrfs_debug(fs_info, fmt, args...) \ | |
c01f5f96 | 3450 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
08a84e25 | 3451 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
b6fdfbff | 3452 | btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
24aa6b41 | 3453 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
b6fdfbff | 3454 | btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
1dd6d7ca | 3455 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
c01f5f96 | 3456 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
27a0dd61 | 3457 | #endif |
c2cf52eb | 3458 | |
08a84e25 DS |
3459 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3460 | do { \ | |
3461 | rcu_read_lock(); \ | |
3462 | btrfs_printk(fs_info, fmt, ##args); \ | |
b6fdfbff MT |
3463 | rcu_read_unlock(); \ |
3464 | } while (0) | |
3465 | ||
3466 | #define btrfs_no_printk_in_rcu(fs_info, fmt, args...) \ | |
3467 | do { \ | |
3468 | rcu_read_lock(); \ | |
3469 | btrfs_no_printk(fs_info, fmt, ##args); \ | |
08a84e25 DS |
3470 | rcu_read_unlock(); \ |
3471 | } while (0) | |
3472 | ||
24aa6b41 DS |
3473 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3474 | do { \ | |
3475 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3476 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3477 | DEFAULT_RATELIMIT_BURST); \ | |
3478 | if (__ratelimit(&_rs)) \ | |
3479 | btrfs_printk(fs_info, fmt, ##args); \ | |
3480 | } while (0) | |
3481 | ||
3482 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3483 | do { \ | |
3484 | rcu_read_lock(); \ | |
3485 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3486 | rcu_read_unlock(); \ | |
3487 | } while (0) | |
3488 | ||
2e17c7c6 JB |
3489 | #ifdef CONFIG_BTRFS_ASSERT |
3490 | ||
c0d19e2b | 3491 | __cold |
2ffad70e | 3492 | static inline void assfail(const char *expr, const char *file, int line) |
2e17c7c6 | 3493 | { |
ab8d0fc4 | 3494 | pr_err("assertion failed: %s, file: %s, line: %d\n", |
2e17c7c6 JB |
3495 | expr, file, line); |
3496 | BUG(); | |
3497 | } | |
3498 | ||
3499 | #define ASSERT(expr) \ | |
3500 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3501 | #else | |
3502 | #define ASSERT(expr) ((void)0) | |
3503 | #endif | |
3504 | ||
f8f591df JT |
3505 | /* |
3506 | * Use that for functions that are conditionally exported for sanity tests but | |
3507 | * otherwise static | |
3508 | */ | |
3509 | #ifndef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3510 | #define EXPORT_FOR_TESTS static | |
3511 | #else | |
3512 | #define EXPORT_FOR_TESTS | |
3513 | #endif | |
3514 | ||
ba3c2b19 NB |
3515 | __cold |
3516 | static inline void btrfs_print_v0_err(struct btrfs_fs_info *fs_info) | |
3517 | { | |
3518 | btrfs_err(fs_info, | |
3519 | "Unsupported V0 extent filesystem detected. Aborting. Please re-create your filesystem with a newer kernel"); | |
3520 | } | |
3521 | ||
533574c6 | 3522 | __printf(5, 6) |
c0d19e2b | 3523 | __cold |
34d97007 | 3524 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3525 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3526 | |
e33e17ee | 3527 | const char *btrfs_decode_error(int errno); |
533574c6 | 3528 | |
c0d19e2b | 3529 | __cold |
49b25e05 | 3530 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
66642832 | 3531 | const char *function, |
49b25e05 JM |
3532 | unsigned int line, int errno); |
3533 | ||
c5f4ccb2 AJ |
3534 | /* |
3535 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3536 | * detected, that way the exact line number is reported. | |
3537 | */ | |
66642832 | 3538 | #define btrfs_abort_transaction(trans, errno) \ |
c5f4ccb2 AJ |
3539 | do { \ |
3540 | /* Report first abort since mount */ \ | |
3541 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
66642832 | 3542 | &((trans)->fs_info->fs_state))) { \ |
e5d6b12f CM |
3543 | if ((errno) != -EIO) { \ |
3544 | WARN(1, KERN_DEBUG \ | |
3545 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3546 | (errno)); \ | |
3547 | } else { \ | |
71367b3f JM |
3548 | btrfs_debug((trans)->fs_info, \ |
3549 | "Transaction aborted (error %d)", \ | |
e5d6b12f CM |
3550 | (errno)); \ |
3551 | } \ | |
c5f4ccb2 | 3552 | } \ |
66642832 | 3553 | __btrfs_abort_transaction((trans), __func__, \ |
c5f4ccb2 AJ |
3554 | __LINE__, (errno)); \ |
3555 | } while (0) | |
3556 | ||
3557 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3558 | do { \ | |
3559 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3560 | (errno), fmt, ##args); \ | |
3561 | } while (0) | |
3562 | ||
3563 | __printf(5, 6) | |
3564 | __cold | |
3565 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3566 | unsigned int line, int errno, const char *fmt, ...); | |
3567 | /* | |
3568 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3569 | * will panic(). Otherwise we BUG() here. | |
3570 | */ | |
3571 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3572 | do { \ | |
3573 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3574 | BUG(); \ | |
3575 | } while (0) | |
3576 | ||
3577 | ||
3578 | /* compatibility and incompatibility defines */ | |
3579 | ||
2b0ce2c2 MH |
3580 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3581 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3582 | ||
3583 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3584 | u64 flag) | |
3585 | { | |
3586 | struct btrfs_super_block *disk_super; | |
3587 | u64 features; | |
3588 | ||
3589 | disk_super = fs_info->super_copy; | |
3590 | features = btrfs_super_incompat_flags(disk_super); | |
3591 | if (!(features & flag)) { | |
ceda0864 MX |
3592 | spin_lock(&fs_info->super_lock); |
3593 | features = btrfs_super_incompat_flags(disk_super); | |
3594 | if (!(features & flag)) { | |
3595 | features |= flag; | |
3596 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3597 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3598 | flag); |
3599 | } | |
3600 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3601 | } |
3602 | } | |
3603 | ||
1abfbcdf OS |
3604 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
3605 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3606 | ||
3607 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
3608 | u64 flag) | |
3609 | { | |
3610 | struct btrfs_super_block *disk_super; | |
3611 | u64 features; | |
3612 | ||
3613 | disk_super = fs_info->super_copy; | |
3614 | features = btrfs_super_incompat_flags(disk_super); | |
3615 | if (features & flag) { | |
3616 | spin_lock(&fs_info->super_lock); | |
3617 | features = btrfs_super_incompat_flags(disk_super); | |
3618 | if (features & flag) { | |
3619 | features &= ~flag; | |
3620 | btrfs_set_super_incompat_flags(disk_super, features); | |
3621 | btrfs_info(fs_info, "clearing %llu feature flag", | |
3622 | flag); | |
3623 | } | |
3624 | spin_unlock(&fs_info->super_lock); | |
3625 | } | |
3626 | } | |
3627 | ||
3173a18f JB |
3628 | #define btrfs_fs_incompat(fs_info, opt) \ |
3629 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3630 | ||
9780c497 | 3631 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3632 | { |
3633 | struct btrfs_super_block *disk_super; | |
3634 | disk_super = fs_info->super_copy; | |
3635 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3636 | } | |
3637 | ||
1abfbcdf OS |
3638 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
3639 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3640 | ||
3641 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3642 | u64 flag) | |
3643 | { | |
3644 | struct btrfs_super_block *disk_super; | |
3645 | u64 features; | |
3646 | ||
3647 | disk_super = fs_info->super_copy; | |
3648 | features = btrfs_super_compat_ro_flags(disk_super); | |
3649 | if (!(features & flag)) { | |
3650 | spin_lock(&fs_info->super_lock); | |
3651 | features = btrfs_super_compat_ro_flags(disk_super); | |
3652 | if (!(features & flag)) { | |
3653 | features |= flag; | |
3654 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3655 | btrfs_info(fs_info, "setting %llu ro feature flag", | |
3656 | flag); | |
3657 | } | |
3658 | spin_unlock(&fs_info->super_lock); | |
3659 | } | |
3660 | } | |
3661 | ||
3662 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
3663 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3664 | ||
3665 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3666 | u64 flag) | |
3667 | { | |
3668 | struct btrfs_super_block *disk_super; | |
3669 | u64 features; | |
3670 | ||
3671 | disk_super = fs_info->super_copy; | |
3672 | features = btrfs_super_compat_ro_flags(disk_super); | |
3673 | if (features & flag) { | |
3674 | spin_lock(&fs_info->super_lock); | |
3675 | features = btrfs_super_compat_ro_flags(disk_super); | |
3676 | if (features & flag) { | |
3677 | features &= ~flag; | |
3678 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3679 | btrfs_info(fs_info, "clearing %llu ro feature flag", | |
3680 | flag); | |
3681 | } | |
3682 | spin_unlock(&fs_info->super_lock); | |
3683 | } | |
3684 | } | |
3685 | ||
3686 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3687 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3688 | ||
3689 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3690 | { | |
3691 | struct btrfs_super_block *disk_super; | |
3692 | disk_super = fs_info->super_copy; | |
3693 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3694 | } | |
3695 | ||
33268eaf | 3696 | /* acl.c */ |
0eda294d | 3697 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3698 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3699 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3700 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3701 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3702 | #else |
ed8f3737 | 3703 | #define btrfs_get_acl NULL |
996a710d | 3704 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3705 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3706 | struct inode *inode, struct inode *dir) | |
3707 | { | |
3708 | return 0; | |
3709 | } | |
9b89d95a | 3710 | #endif |
0f9dd46c | 3711 | |
5d4f98a2 | 3712 | /* relocation.c */ |
6bccf3ab | 3713 | int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start); |
5d4f98a2 YZ |
3714 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
3715 | struct btrfs_root *root); | |
3716 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3717 | struct btrfs_root *root); | |
3718 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3719 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
3720 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3721 | struct btrfs_root *root, struct extent_buffer *buf, | |
3722 | struct extent_buffer *cow); | |
147d256e | 3723 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 3724 | u64 *bytes_to_reserve); |
49b25e05 | 3725 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3726 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3727 | |
3728 | /* scrub.c */ | |
aa1b8cd4 SB |
3729 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3730 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3731 | int readonly, int is_dev_replace); |
2ff7e61e JM |
3732 | void btrfs_scrub_pause(struct btrfs_fs_info *fs_info); |
3733 | void btrfs_scrub_continue(struct btrfs_fs_info *fs_info); | |
aa1b8cd4 SB |
3734 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
3735 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
3736 | struct btrfs_device *dev); | |
2ff7e61e | 3737 | int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid, |
a2de733c | 3738 | struct btrfs_scrub_progress *progress); |
0966a7b1 QW |
3739 | static inline void btrfs_init_full_stripe_locks_tree( |
3740 | struct btrfs_full_stripe_locks_tree *locks_root) | |
3741 | { | |
3742 | locks_root->root = RB_ROOT; | |
3743 | mutex_init(&locks_root->lock); | |
3744 | } | |
c404e0dc MX |
3745 | |
3746 | /* dev-replace.c */ | |
3747 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
3748 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
3749 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
3750 | ||
3751 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
3752 | { | |
3753 | btrfs_bio_counter_sub(fs_info, 1); | |
3754 | } | |
a2de733c | 3755 | |
7414a03f AJ |
3756 | /* reada.c */ |
3757 | struct reada_control { | |
c28f158e | 3758 | struct btrfs_fs_info *fs_info; /* tree to prefetch */ |
7414a03f AJ |
3759 | struct btrfs_key key_start; |
3760 | struct btrfs_key key_end; /* exclusive */ | |
3761 | atomic_t elems; | |
3762 | struct kref refcnt; | |
3763 | wait_queue_head_t wait; | |
3764 | }; | |
3765 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3766 | struct btrfs_key *start, struct btrfs_key *end); | |
3767 | int btrfs_reada_wait(void *handle); | |
3768 | void btrfs_reada_detach(void *handle); | |
d48d71aa | 3769 | int btree_readahead_hook(struct extent_buffer *eb, int err); |
7414a03f | 3770 | |
95a06077 JS |
3771 | static inline int is_fstree(u64 rootid) |
3772 | { | |
3773 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
3774 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
3775 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
3776 | return 1; |
3777 | return 0; | |
3778 | } | |
210549eb DS |
3779 | |
3780 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3781 | { | |
3782 | return signal_pending(current); | |
3783 | } | |
3784 | ||
aaedb55b JB |
3785 | /* Sanity test specific functions */ |
3786 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
a654666a | 3787 | void btrfs_test_inode_set_ops(struct inode *inode); |
aaedb55b | 3788 | void btrfs_test_destroy_inode(struct inode *inode); |
210549eb | 3789 | |
f5ee5c9a | 3790 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
fccb84c9 | 3791 | { |
b2fa1154 DS |
3792 | return test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state); |
3793 | } | |
3794 | #else | |
3795 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) | |
3796 | { | |
fccb84c9 DS |
3797 | return 0; |
3798 | } | |
b2fa1154 | 3799 | #endif |
9888c340 | 3800 | |
110a21fe DS |
3801 | static inline void cond_wake_up(struct wait_queue_head *wq) |
3802 | { | |
3803 | /* | |
3804 | * This implies a full smp_mb barrier, see comments for | |
3805 | * waitqueue_active why. | |
3806 | */ | |
3807 | if (wq_has_sleeper(wq)) | |
3808 | wake_up(wq); | |
3809 | } | |
3810 | ||
3811 | static inline void cond_wake_up_nomb(struct wait_queue_head *wq) | |
3812 | { | |
3813 | /* | |
3814 | * Special case for conditional wakeup where the barrier required for | |
3815 | * waitqueue_active is implied by some of the preceding code. Eg. one | |
3816 | * of such atomic operations (atomic_dec_and_return, ...), or a | |
3817 | * unlock/lock sequence, etc. | |
3818 | */ | |
3819 | if (waitqueue_active(wq)) | |
3820 | wake_up(wq); | |
3821 | } | |
3822 | ||
eb60ceac | 3823 | #endif |