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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 | |
294e30fe JB |
44 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
45 | #define STATIC noinline | |
46 | #else | |
47 | #define STATIC static noinline | |
48 | #endif | |
49 | ||
cdb4c574 | 50 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 51 | |
72d7aefc | 52 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 53 | |
4008c04a | 54 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 55 | |
7c829b72 AJ |
56 | #define BTRFS_OLDEST_GENERATION 0ULL |
57 | ||
727011e0 CM |
58 | /* |
59 | * the max metadata block size. This limit is somewhat artificial, | |
60 | * but the memmove costs go through the roof for larger blocks. | |
61 | */ | |
62 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
63 | ||
e20d96d6 CM |
64 | /* |
65 | * we can actually store much bigger names, but lets not confuse the rest | |
66 | * of linux | |
67 | */ | |
68 | #define BTRFS_NAME_LEN 255 | |
69 | ||
f186373f MF |
70 | /* |
71 | * Theoretical limit is larger, but we keep this down to a sane | |
72 | * value. That should limit greatly the possibility of collisions on | |
73 | * inode ref items. | |
74 | */ | |
75 | #define BTRFS_LINK_MAX 65535U | |
76 | ||
4408ea7c | 77 | /* four bytes for CRC32 */ |
4d4ab6d6 | 78 | static const int btrfs_csum_sizes[] = { 4 }; |
607d432d | 79 | |
3954401f | 80 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 81 | |
3d136a11 SB |
82 | /* ioprio of readahead is set to idle */ |
83 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
84 | ||
ee22184b | 85 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M |
e2d84521 | 86 | |
dec59fa3 EL |
87 | /* |
88 | * Use large batch size to reduce overhead of metadata updates. On the reader | |
89 | * side, we only read it when we are close to ENOSPC and the read overhead is | |
90 | * mostly related to the number of CPUs, so it is OK to use arbitrary large | |
91 | * value here. | |
92 | */ | |
93 | #define BTRFS_TOTAL_BYTES_PINNED_BATCH SZ_128M | |
94 | ||
ee22184b | 95 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M |
dcab6a3b | 96 | |
9678c543 | 97 | |
823bb20a DS |
98 | /* |
99 | * Count how many BTRFS_MAX_EXTENT_SIZE cover the @size | |
100 | */ | |
101 | static inline u32 count_max_extents(u64 size) | |
102 | { | |
103 | return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE); | |
104 | } | |
105 | ||
0b86a832 CM |
106 | struct btrfs_mapping_tree { |
107 | struct extent_map_tree map_tree; | |
108 | }; | |
109 | ||
0b86a832 CM |
110 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
111 | { | |
112 | BUG_ON(num_stripes == 0); | |
113 | return sizeof(struct btrfs_chunk) + | |
114 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
115 | } | |
116 | ||
acce952b | 117 | /* |
118 | * File system states | |
119 | */ | |
87533c47 | 120 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 121 | #define BTRFS_FS_STATE_REMOUNTING 1 |
08748810 | 122 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
c404e0dc | 123 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
7c0260ee | 124 | #define BTRFS_FS_STATE_DUMMY_FS_INFO 4 |
acce952b | 125 | |
5d4f98a2 YZ |
126 | #define BTRFS_BACKREF_REV_MAX 256 |
127 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
128 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
129 | BTRFS_BACKREF_REV_SHIFT) | |
130 | ||
131 | #define BTRFS_OLD_BACKREF_REV 0 | |
132 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 133 | |
fec577fb CM |
134 | /* |
135 | * every tree block (leaf or node) starts with this header. | |
136 | */ | |
bb492bb0 | 137 | struct btrfs_header { |
e17cade2 | 138 | /* these first four must match the super block */ |
f254e52c | 139 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 140 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 141 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 142 | __le64 flags; |
e17cade2 CM |
143 | |
144 | /* allowed to be different from the super from here on down */ | |
145 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 146 | __le64 generation; |
4d775673 | 147 | __le64 owner; |
5f39d397 | 148 | __le32 nritems; |
9a6f11ed | 149 | u8 level; |
eb60ceac CM |
150 | } __attribute__ ((__packed__)); |
151 | ||
0b86a832 CM |
152 | /* |
153 | * this is a very generous portion of the super block, giving us | |
154 | * room to translate 14 chunks with 3 stripes each. | |
155 | */ | |
156 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
157 | ||
af31f5e5 CM |
158 | /* |
159 | * just in case we somehow lose the roots and are not able to mount, | |
160 | * we store an array of the roots from previous transactions | |
161 | * in the super. | |
162 | */ | |
163 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
164 | struct btrfs_root_backup { | |
165 | __le64 tree_root; | |
166 | __le64 tree_root_gen; | |
167 | ||
168 | __le64 chunk_root; | |
169 | __le64 chunk_root_gen; | |
170 | ||
171 | __le64 extent_root; | |
172 | __le64 extent_root_gen; | |
173 | ||
174 | __le64 fs_root; | |
175 | __le64 fs_root_gen; | |
176 | ||
177 | __le64 dev_root; | |
178 | __le64 dev_root_gen; | |
179 | ||
180 | __le64 csum_root; | |
181 | __le64 csum_root_gen; | |
182 | ||
183 | __le64 total_bytes; | |
184 | __le64 bytes_used; | |
185 | __le64 num_devices; | |
186 | /* future */ | |
d1423248 | 187 | __le64 unused_64[4]; |
af31f5e5 CM |
188 | |
189 | u8 tree_root_level; | |
190 | u8 chunk_root_level; | |
191 | u8 extent_root_level; | |
192 | u8 fs_root_level; | |
193 | u8 dev_root_level; | |
194 | u8 csum_root_level; | |
195 | /* future and to align */ | |
196 | u8 unused_8[10]; | |
197 | } __attribute__ ((__packed__)); | |
198 | ||
fec577fb CM |
199 | /* |
200 | * the super block basically lists the main trees of the FS | |
201 | * it currently lacks any block count etc etc | |
202 | */ | |
234b63a0 | 203 | struct btrfs_super_block { |
f254e52c | 204 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 205 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 206 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 207 | __le64 bytenr; /* this block number */ |
63b10fc4 | 208 | __le64 flags; |
e17cade2 CM |
209 | |
210 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 211 | __le64 magic; |
3768f368 CM |
212 | __le64 generation; |
213 | __le64 root; | |
0b86a832 | 214 | __le64 chunk_root; |
e02119d5 | 215 | __le64 log_root; |
c3027eb5 CM |
216 | |
217 | /* this will help find the new super based on the log root */ | |
218 | __le64 log_root_transid; | |
db94535d CM |
219 | __le64 total_bytes; |
220 | __le64 bytes_used; | |
2e635a27 | 221 | __le64 root_dir_objectid; |
8a4b83cc | 222 | __le64 num_devices; |
5f39d397 CM |
223 | __le32 sectorsize; |
224 | __le32 nodesize; | |
707e8a07 | 225 | __le32 __unused_leafsize; |
87ee04eb | 226 | __le32 stripesize; |
0b86a832 | 227 | __le32 sys_chunk_array_size; |
84234f3a | 228 | __le64 chunk_root_generation; |
f2b636e8 JB |
229 | __le64 compat_flags; |
230 | __le64 compat_ro_flags; | |
231 | __le64 incompat_flags; | |
607d432d | 232 | __le16 csum_type; |
db94535d | 233 | u8 root_level; |
0b86a832 | 234 | u8 chunk_root_level; |
e02119d5 | 235 | u8 log_root_level; |
0d81ba5d | 236 | struct btrfs_dev_item dev_item; |
c3027eb5 | 237 | |
7ae9c09d | 238 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 239 | |
0af3d00b | 240 | __le64 cache_generation; |
26432799 | 241 | __le64 uuid_tree_generation; |
0af3d00b | 242 | |
c3027eb5 | 243 | /* future expansion */ |
26432799 | 244 | __le64 reserved[30]; |
0b86a832 | 245 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 246 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
247 | } __attribute__ ((__packed__)); |
248 | ||
f2b636e8 JB |
249 | /* |
250 | * Compat flags that we support. If any incompat flags are set other than the | |
251 | * ones specified below then we will fail to mount | |
252 | */ | |
5d4f98a2 | 253 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
254 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
255 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
70f6d82e OS |
256 | |
257 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ | |
6675df31 OS |
258 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \ |
259 | BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID) | |
70f6d82e | 260 | |
2eaa055f JM |
261 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
262 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
263 | ||
0af3d00b JB |
264 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
265 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 266 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 267 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 268 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 269 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
5c1aab1d | 270 | BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD | \ |
53b381b3 | 271 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 272 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f JB |
273 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
274 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) | |
f2b636e8 | 275 | |
2eaa055f JM |
276 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
277 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
278 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 279 | |
fec577fb | 280 | /* |
62e2749e | 281 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
282 | * the item in the leaf (relative to the start of the data area) |
283 | */ | |
0783fcfc | 284 | struct btrfs_item { |
e2fa7227 | 285 | struct btrfs_disk_key key; |
123abc88 | 286 | __le32 offset; |
5f39d397 | 287 | __le32 size; |
eb60ceac CM |
288 | } __attribute__ ((__packed__)); |
289 | ||
fec577fb CM |
290 | /* |
291 | * leaves have an item area and a data area: | |
292 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
293 | * | |
294 | * The data is separate from the items to get the keys closer together | |
295 | * during searches. | |
296 | */ | |
234b63a0 | 297 | struct btrfs_leaf { |
bb492bb0 | 298 | struct btrfs_header header; |
123abc88 | 299 | struct btrfs_item items[]; |
eb60ceac CM |
300 | } __attribute__ ((__packed__)); |
301 | ||
fec577fb CM |
302 | /* |
303 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
304 | * other blocks | |
305 | */ | |
123abc88 CM |
306 | struct btrfs_key_ptr { |
307 | struct btrfs_disk_key key; | |
308 | __le64 blockptr; | |
74493f7a | 309 | __le64 generation; |
123abc88 CM |
310 | } __attribute__ ((__packed__)); |
311 | ||
234b63a0 | 312 | struct btrfs_node { |
bb492bb0 | 313 | struct btrfs_header header; |
123abc88 | 314 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
315 | } __attribute__ ((__packed__)); |
316 | ||
fec577fb | 317 | /* |
234b63a0 CM |
318 | * btrfs_paths remember the path taken from the root down to the leaf. |
319 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
320 | * to any other levels that are present. |
321 | * | |
322 | * The slots array records the index of the item or block pointer | |
323 | * used while walking the tree. | |
324 | */ | |
e4058b54 | 325 | enum { READA_NONE = 0, READA_BACK, READA_FORWARD }; |
234b63a0 | 326 | struct btrfs_path { |
5f39d397 | 327 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 328 | int slots[BTRFS_MAX_LEVEL]; |
925baedd | 329 | /* if there is real range locking, this locks field will change */ |
4fb72bf2 | 330 | u8 locks[BTRFS_MAX_LEVEL]; |
dccabfad | 331 | u8 reada; |
925baedd | 332 | /* keep some upper locks as we walk down */ |
7853f15b | 333 | u8 lowest_level; |
459931ec CM |
334 | |
335 | /* | |
336 | * set by btrfs_split_item, tells search_slot to keep all locks | |
337 | * and to force calls to keep space in the nodes | |
338 | */ | |
b9473439 CM |
339 | unsigned int search_for_split:1; |
340 | unsigned int keep_locks:1; | |
341 | unsigned int skip_locking:1; | |
342 | unsigned int leave_spinning:1; | |
5d4f98a2 | 343 | unsigned int search_commit_root:1; |
3f8a18cc | 344 | unsigned int need_commit_sem:1; |
5f5bc6b1 | 345 | unsigned int skip_release_on_error:1; |
eb60ceac | 346 | }; |
da17066c | 347 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \ |
5d4f98a2 | 348 | sizeof(struct btrfs_item)) |
e922e087 SB |
349 | struct btrfs_dev_replace { |
350 | u64 replace_state; /* see #define above */ | |
a944442c AP |
351 | time64_t time_started; /* seconds since 1-Jan-1970 */ |
352 | time64_t time_stopped; /* seconds since 1-Jan-1970 */ | |
e922e087 SB |
353 | atomic64_t num_write_errors; |
354 | atomic64_t num_uncorrectable_read_errors; | |
355 | ||
356 | u64 cursor_left; | |
357 | u64 committed_cursor_left; | |
358 | u64 cursor_left_last_write_of_item; | |
359 | u64 cursor_right; | |
360 | ||
361 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
362 | ||
363 | int is_valid; | |
364 | int item_needs_writeback; | |
365 | struct btrfs_device *srcdev; | |
366 | struct btrfs_device *tgtdev; | |
367 | ||
368 | pid_t lock_owner; | |
369 | atomic_t nesting_level; | |
370 | struct mutex lock_finishing_cancel_unmount; | |
73beece9 LB |
371 | rwlock_t lock; |
372 | atomic_t read_locks; | |
373 | atomic_t blocking_readers; | |
374 | wait_queue_head_t read_lock_wq; | |
e922e087 SB |
375 | |
376 | struct btrfs_scrub_progress scrub_progress; | |
377 | }; | |
378 | ||
c1895442 JM |
379 | /* For raid type sysfs entries */ |
380 | struct raid_kobject { | |
75cb379d | 381 | u64 flags; |
c1895442 | 382 | struct kobject kobj; |
75cb379d | 383 | struct list_head list; |
c1895442 JM |
384 | }; |
385 | ||
6324fbf3 | 386 | struct btrfs_space_info { |
26b47ff6 | 387 | spinlock_t lock; |
6a63209f | 388 | |
89a55897 JB |
389 | u64 total_bytes; /* total bytes in the space, |
390 | this doesn't take mirrors into account */ | |
b742bb82 | 391 | u64 bytes_used; /* total bytes used, |
e9c54999 | 392 | this doesn't take mirrors into account */ |
6a63209f JB |
393 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
394 | transaction finishes */ | |
395 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
396 | current allocations */ | |
6a63209f | 397 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 398 | delalloc/allocations */ |
26b47ff6 MX |
399 | u64 bytes_readonly; /* total bytes that are read only */ |
400 | ||
4f4db217 JB |
401 | u64 max_extent_size; /* This will hold the maximum extent size of |
402 | the space info if we had an ENOSPC in the | |
403 | allocator. */ | |
404 | ||
26b47ff6 MX |
405 | unsigned int full:1; /* indicates that we cannot allocate any more |
406 | chunks for this space */ | |
407 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
408 | ||
409 | unsigned int flush:1; /* set if we are trying to make space */ | |
410 | ||
411 | unsigned int force_alloc; /* set if we need to force a chunk | |
412 | alloc for this space */ | |
413 | ||
b742bb82 | 414 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
415 | u64 disk_total; /* total bytes on disk, takes mirrors into |
416 | account */ | |
6a63209f | 417 | |
26b47ff6 MX |
418 | u64 flags; |
419 | ||
b150a4f1 JB |
420 | /* |
421 | * bytes_pinned is kept in line with what is actually pinned, as in | |
422 | * we've called update_block_group and dropped the bytes_used counter | |
423 | * and increased the bytes_pinned counter. However this means that | |
424 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
bb7ab3b9 AB |
425 | * delayed refs are flushed, so this counter is inc'ed every time we |
426 | * call btrfs_free_extent so it is a realtime count of what will be | |
01327610 | 427 | * freed once the transaction is committed. It will be zeroed every |
bb7ab3b9 | 428 | * time the transaction commits. |
b150a4f1 JB |
429 | */ |
430 | struct percpu_counter total_bytes_pinned; | |
431 | ||
6324fbf3 | 432 | struct list_head list; |
75c68e9f | 433 | /* Protected by the spinlock 'lock'. */ |
633c0aad | 434 | struct list_head ro_bgs; |
957780eb JB |
435 | struct list_head priority_tickets; |
436 | struct list_head tickets; | |
939659df WX |
437 | /* |
438 | * tickets_id just indicates the next ticket will be handled, so note | |
439 | * it's not stored per ticket. | |
440 | */ | |
ce129655 | 441 | u64 tickets_id; |
0f9dd46c | 442 | |
26b47ff6 | 443 | struct rw_semaphore groups_sem; |
0f9dd46c | 444 | /* for block groups in our same type */ |
b742bb82 | 445 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 446 | wait_queue_head_t wait; |
6ab0a202 JM |
447 | |
448 | struct kobject kobj; | |
c1895442 | 449 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
0f9dd46c JB |
450 | }; |
451 | ||
66d8f3dd MX |
452 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
453 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
454 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
455 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
456 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
457 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
458 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
459 | ||
f0486c68 YZ |
460 | struct btrfs_block_rsv { |
461 | u64 size; | |
462 | u64 reserved; | |
f0486c68 | 463 | struct btrfs_space_info *space_info; |
f0486c68 | 464 | spinlock_t lock; |
66d8f3dd MX |
465 | unsigned short full; |
466 | unsigned short type; | |
467 | unsigned short failfast; | |
ff6bc37e QW |
468 | |
469 | /* | |
470 | * Qgroup equivalent for @size @reserved | |
471 | * | |
472 | * Unlike normal @size/@reserved for inode rsv, qgroup doesn't care | |
473 | * about things like csum size nor how many tree blocks it will need to | |
474 | * reserve. | |
475 | * | |
476 | * Qgroup cares more about net change of the extent usage. | |
477 | * | |
478 | * So for one newly inserted file extent, in worst case it will cause | |
479 | * leaf split and level increase, nodesize for each file extent is | |
480 | * already too much. | |
481 | * | |
482 | * In short, qgroup_size/reserved is the upper limit of possible needed | |
483 | * qgroup metadata reservation. | |
484 | */ | |
485 | u64 qgroup_rsv_size; | |
486 | u64 qgroup_rsv_reserved; | |
f0486c68 YZ |
487 | }; |
488 | ||
fa9c0d79 CM |
489 | /* |
490 | * free clusters are used to claim free space in relatively large chunks, | |
583b7231 HK |
491 | * allowing us to do less seeky writes. They are used for all metadata |
492 | * allocations. In ssd_spread mode they are also used for data allocations. | |
fa9c0d79 CM |
493 | */ |
494 | struct btrfs_free_cluster { | |
495 | spinlock_t lock; | |
496 | spinlock_t refill_lock; | |
497 | struct rb_root root; | |
498 | ||
499 | /* largest extent in this cluster */ | |
500 | u64 max_size; | |
501 | ||
502 | /* first extent starting offset */ | |
503 | u64 window_start; | |
504 | ||
c759c4e1 JB |
505 | /* We did a full search and couldn't create a cluster */ |
506 | bool fragmented; | |
507 | ||
fa9c0d79 CM |
508 | struct btrfs_block_group_cache *block_group; |
509 | /* | |
510 | * when a cluster is allocated from a block group, we put the | |
511 | * cluster onto a list in the block group so that it can | |
512 | * be freed before the block group is freed. | |
513 | */ | |
514 | struct list_head block_group_list; | |
6324fbf3 CM |
515 | }; |
516 | ||
817d52f8 JB |
517 | enum btrfs_caching_type { |
518 | BTRFS_CACHE_NO = 0, | |
519 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
520 | BTRFS_CACHE_FAST = 2, |
521 | BTRFS_CACHE_FINISHED = 3, | |
36cce922 | 522 | BTRFS_CACHE_ERROR = 4, |
817d52f8 JB |
523 | }; |
524 | ||
0af3d00b JB |
525 | enum btrfs_disk_cache_state { |
526 | BTRFS_DC_WRITTEN = 0, | |
527 | BTRFS_DC_ERROR = 1, | |
528 | BTRFS_DC_CLEAR = 2, | |
529 | BTRFS_DC_SETUP = 3, | |
0af3d00b JB |
530 | }; |
531 | ||
11833d66 YZ |
532 | struct btrfs_caching_control { |
533 | struct list_head list; | |
534 | struct mutex mutex; | |
535 | wait_queue_head_t wait; | |
bab39bf9 | 536 | struct btrfs_work work; |
11833d66 YZ |
537 | struct btrfs_block_group_cache *block_group; |
538 | u64 progress; | |
1e4f4714 | 539 | refcount_t count; |
11833d66 YZ |
540 | }; |
541 | ||
73fa48b6 | 542 | /* Once caching_thread() finds this much free space, it will wake up waiters. */ |
d4417e22 | 543 | #define CACHING_CTL_WAKE_UP SZ_2M |
73fa48b6 | 544 | |
4c6d1d85 CM |
545 | struct btrfs_io_ctl { |
546 | void *cur, *orig; | |
547 | struct page *page; | |
548 | struct page **pages; | |
f15376df | 549 | struct btrfs_fs_info *fs_info; |
c9dc4c65 | 550 | struct inode *inode; |
4c6d1d85 CM |
551 | unsigned long size; |
552 | int index; | |
553 | int num_pages; | |
c9dc4c65 CM |
554 | int entries; |
555 | int bitmaps; | |
4c6d1d85 CM |
556 | unsigned check_crcs:1; |
557 | }; | |
558 | ||
0966a7b1 QW |
559 | /* |
560 | * Tree to record all locked full stripes of a RAID5/6 block group | |
561 | */ | |
562 | struct btrfs_full_stripe_locks_tree { | |
563 | struct rb_root root; | |
564 | struct mutex lock; | |
565 | }; | |
566 | ||
9078a3e1 CM |
567 | struct btrfs_block_group_cache { |
568 | struct btrfs_key key; | |
569 | struct btrfs_block_group_item item; | |
817d52f8 | 570 | struct btrfs_fs_info *fs_info; |
0af3d00b | 571 | struct inode *inode; |
c286ac48 | 572 | spinlock_t lock; |
324ae4df | 573 | u64 pinned; |
e8569813 | 574 | u64 reserved; |
e570fd27 | 575 | u64 delalloc_bytes; |
1b2da372 | 576 | u64 bytes_super; |
0b86a832 | 577 | u64 flags; |
5b0e95bf | 578 | u64 cache_generation; |
a5ed9182 OS |
579 | |
580 | /* | |
581 | * If the free space extent count exceeds this number, convert the block | |
582 | * group to bitmaps. | |
583 | */ | |
584 | u32 bitmap_high_thresh; | |
585 | ||
586 | /* | |
587 | * If the free space extent count drops below this number, convert the | |
588 | * block group back to extents. | |
589 | */ | |
590 | u32 bitmap_low_thresh; | |
53b381b3 | 591 | |
e570fd27 MX |
592 | /* |
593 | * It is just used for the delayed data space allocation because | |
594 | * only the data space allocation and the relative metadata update | |
595 | * can be done cross the transaction. | |
596 | */ | |
597 | struct rw_semaphore data_rwsem; | |
598 | ||
53b381b3 DW |
599 | /* for raid56, this is a full stripe, without parity */ |
600 | unsigned long full_stripe_len; | |
601 | ||
868f401a | 602 | unsigned int ro; |
0410c94a | 603 | unsigned int iref:1; |
4f69cb98 | 604 | unsigned int has_caching_ctl:1; |
04216820 | 605 | unsigned int removed:1; |
0af3d00b JB |
606 | |
607 | int disk_cache_state; | |
0f9dd46c | 608 | |
817d52f8 | 609 | /* cache tracking stuff */ |
817d52f8 | 610 | int cached; |
11833d66 YZ |
611 | struct btrfs_caching_control *caching_ctl; |
612 | u64 last_byte_to_unpin; | |
817d52f8 | 613 | |
0f9dd46c JB |
614 | struct btrfs_space_info *space_info; |
615 | ||
616 | /* free space cache stuff */ | |
34d52cb6 | 617 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
618 | |
619 | /* block group cache stuff */ | |
620 | struct rb_node cache_node; | |
621 | ||
622 | /* for block groups in the same raid type */ | |
623 | struct list_head list; | |
d2fb3437 YZ |
624 | |
625 | /* usage count */ | |
626 | atomic_t count; | |
fa9c0d79 CM |
627 | |
628 | /* List of struct btrfs_free_clusters for this block group. | |
629 | * Today it will only have one thing on it, but that may change | |
630 | */ | |
631 | struct list_head cluster_list; | |
ea658bad | 632 | |
47ab2a6c JB |
633 | /* For delayed block group creation or deletion of empty block groups */ |
634 | struct list_head bg_list; | |
633c0aad JB |
635 | |
636 | /* For read-only block groups */ | |
637 | struct list_head ro_list; | |
04216820 FM |
638 | |
639 | atomic_t trimming; | |
ce93ec54 JB |
640 | |
641 | /* For dirty block groups */ | |
642 | struct list_head dirty_list; | |
c9dc4c65 CM |
643 | struct list_head io_list; |
644 | ||
645 | struct btrfs_io_ctl io_ctl; | |
a5ed9182 | 646 | |
9cfa3e34 FM |
647 | /* |
648 | * Incremented when doing extent allocations and holding a read lock | |
649 | * on the space_info's groups_sem semaphore. | |
650 | * Decremented when an ordered extent that represents an IO against this | |
651 | * block group's range is created (after it's added to its inode's | |
652 | * root's list of ordered extents) or immediately after the allocation | |
653 | * if it's a metadata extent or fallocate extent (for these cases we | |
654 | * don't create ordered extents). | |
655 | */ | |
656 | atomic_t reservations; | |
657 | ||
f78c436c FM |
658 | /* |
659 | * Incremented while holding the spinlock *lock* by a task checking if | |
660 | * it can perform a nocow write (incremented if the value for the *ro* | |
661 | * field is 0). Decremented by such tasks once they create an ordered | |
662 | * extent or before that if some error happens before reaching that step. | |
663 | * This is to prevent races between block group relocation and nocow | |
664 | * writes through direct IO. | |
665 | */ | |
666 | atomic_t nocow_writers; | |
667 | ||
a5ed9182 OS |
668 | /* Lock for free space tree operations. */ |
669 | struct mutex free_space_lock; | |
670 | ||
671 | /* | |
672 | * Does the block group need to be added to the free space tree? | |
673 | * Protected by free_space_lock. | |
674 | */ | |
675 | int needs_free_space; | |
0966a7b1 QW |
676 | |
677 | /* Record locked full stripes for RAID5/6 block group */ | |
678 | struct btrfs_full_stripe_locks_tree full_stripe_locks_root; | |
9078a3e1 | 679 | }; |
0b86a832 | 680 | |
097b8a7c JS |
681 | /* delayed seq elem */ |
682 | struct seq_list { | |
683 | struct list_head list; | |
684 | u64 seq; | |
685 | }; | |
686 | ||
3284da7b DS |
687 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
688 | ||
de47c9d3 EN |
689 | #define SEQ_LAST ((u64)-1) |
690 | ||
5d80366e JB |
691 | enum btrfs_orphan_cleanup_state { |
692 | ORPHAN_CLEANUP_STARTED = 1, | |
693 | ORPHAN_CLEANUP_DONE = 2, | |
694 | }; | |
695 | ||
53b381b3 DW |
696 | /* used by the raid56 code to lock stripes for read/modify/write */ |
697 | struct btrfs_stripe_hash { | |
698 | struct list_head hash_list; | |
53b381b3 DW |
699 | spinlock_t lock; |
700 | }; | |
701 | ||
702 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
703 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
704 | struct list_head stripe_cache; |
705 | spinlock_t cache_lock; | |
706 | int cache_size; | |
707 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
708 | }; |
709 | ||
710 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
711 | ||
21c7e756 MX |
712 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
713 | ||
097b8a7c | 714 | /* fs_info */ |
5d4f98a2 | 715 | struct reloc_control; |
0b86a832 | 716 | struct btrfs_device; |
8a4b83cc | 717 | struct btrfs_fs_devices; |
c9e9f97b | 718 | struct btrfs_balance_control; |
16cdcec7 | 719 | struct btrfs_delayed_root; |
afcdd129 JB |
720 | |
721 | #define BTRFS_FS_BARRIER 1 | |
722 | #define BTRFS_FS_CLOSING_START 2 | |
723 | #define BTRFS_FS_CLOSING_DONE 3 | |
724 | #define BTRFS_FS_LOG_RECOVERING 4 | |
725 | #define BTRFS_FS_OPEN 5 | |
726 | #define BTRFS_FS_QUOTA_ENABLED 6 | |
afcdd129 JB |
727 | #define BTRFS_FS_UPDATE_UUID_TREE_GEN 9 |
728 | #define BTRFS_FS_CREATING_FREE_SPACE_TREE 10 | |
729 | #define BTRFS_FS_BTREE_ERR 11 | |
730 | #define BTRFS_FS_LOG1_ERR 12 | |
731 | #define BTRFS_FS_LOG2_ERR 13 | |
f29efe29 | 732 | #define BTRFS_FS_QUOTA_OVERRIDE 14 |
fac03c8d DS |
733 | /* Used to record internally whether fs has been frozen */ |
734 | #define BTRFS_FS_FROZEN 15 | |
f29efe29 | 735 | |
171938e5 DS |
736 | /* |
737 | * Indicate that a whole-filesystem exclusive operation is running | |
738 | * (device replace, resize, device add/delete, balance) | |
739 | */ | |
69ad5976 | 740 | #define BTRFS_FS_EXCL_OP 16 |
afcdd129 | 741 | |
a514d638 QW |
742 | /* |
743 | * To info transaction_kthread we need an immediate commit so it doesn't | |
744 | * need to wait for commit_interval | |
745 | */ | |
746 | #define BTRFS_FS_NEED_ASYNC_COMMIT 17 | |
747 | ||
3009a62f DS |
748 | /* |
749 | * Indicate that balance has been set up from the ioctl and is in the main | |
750 | * phase. The fs_info::balance_ctl is initialized. | |
751 | */ | |
752 | #define BTRFS_FS_BALANCE_RUNNING 18 | |
753 | ||
9f5fae2f | 754 | struct btrfs_fs_info { |
5f39d397 | 755 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 756 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
afcdd129 | 757 | unsigned long flags; |
62e2749e CM |
758 | struct btrfs_root *extent_root; |
759 | struct btrfs_root *tree_root; | |
0b86a832 CM |
760 | struct btrfs_root *chunk_root; |
761 | struct btrfs_root *dev_root; | |
3de4586c | 762 | struct btrfs_root *fs_root; |
d20f7043 | 763 | struct btrfs_root *csum_root; |
416ac51d | 764 | struct btrfs_root *quota_root; |
f7a81ea4 | 765 | struct btrfs_root *uuid_root; |
a5ed9182 | 766 | struct btrfs_root *free_space_root; |
e02119d5 CM |
767 | |
768 | /* the log root tree is a directory of all the other log roots */ | |
769 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
770 | |
771 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 772 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 773 | |
0f9dd46c JB |
774 | /* block group cache stuff */ |
775 | spinlock_t block_group_cache_lock; | |
a1897fdd | 776 | u64 first_logical_byte; |
0f9dd46c JB |
777 | struct rb_root block_group_cache_tree; |
778 | ||
2bf64758 | 779 | /* keep track of unallocated space */ |
a5ed45f8 | 780 | atomic64_t free_chunk_space; |
2bf64758 | 781 | |
11833d66 YZ |
782 | struct extent_io_tree freed_extents[2]; |
783 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 784 | |
0b86a832 CM |
785 | /* logical->physical extent mapping */ |
786 | struct btrfs_mapping_tree mapping_tree; | |
787 | ||
16cdcec7 MX |
788 | /* |
789 | * block reservation for extent, checksum, root tree and | |
790 | * delayed dir index item | |
791 | */ | |
f0486c68 | 792 | struct btrfs_block_rsv global_block_rsv; |
f0486c68 YZ |
793 | /* block reservation for metadata operations */ |
794 | struct btrfs_block_rsv trans_block_rsv; | |
795 | /* block reservation for chunk tree */ | |
796 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
797 | /* block reservation for delayed operations */ |
798 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
799 | |
800 | struct btrfs_block_rsv empty_block_rsv; | |
801 | ||
293ffd5f | 802 | u64 generation; |
15ee9bc7 | 803 | u64 last_trans_committed; |
0a2b2a84 | 804 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
805 | |
806 | /* | |
807 | * this is updated to the current trans every time a full commit | |
808 | * is required instead of the faster short fsync log commits | |
809 | */ | |
810 | u64 last_trans_log_full_commit; | |
25cd999e | 811 | unsigned long mount_opt; |
572d9ab7 DS |
812 | /* |
813 | * Track requests for actions that need to be done during transaction | |
814 | * commit (like for some mount options). | |
815 | */ | |
816 | unsigned long pending_changes; | |
261507a0 | 817 | unsigned long compress_type:4; |
f51d2b59 | 818 | unsigned int compress_level; |
d3740608 | 819 | u32 commit_interval; |
8c6a3ee6 MX |
820 | /* |
821 | * It is a suggestive number, the read side is safe even it gets a | |
822 | * wrong number because we will write out the data into a regular | |
823 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
824 | * so it is also safe. | |
825 | */ | |
6f568d35 | 826 | u64 max_inline; |
0d0c71b3 | 827 | |
79154b1b | 828 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 829 | wait_queue_head_t transaction_throttle; |
f9295749 | 830 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 831 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 832 | wait_queue_head_t async_submit_wait; |
e02119d5 | 833 | |
ceda0864 MX |
834 | /* |
835 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
836 | * when they are updated. | |
837 | * | |
838 | * Because we do not clear the flags for ever, so we needn't use | |
839 | * the lock on the read side. | |
840 | * | |
841 | * We also needn't use the lock when we mount the fs, because | |
842 | * there is no other task which will update the flag. | |
843 | */ | |
844 | spinlock_t super_lock; | |
6c41761f DS |
845 | struct btrfs_super_block *super_copy; |
846 | struct btrfs_super_block *super_for_commit; | |
e20d96d6 | 847 | struct super_block *sb; |
d98237b3 | 848 | struct inode *btree_inode; |
e02119d5 | 849 | struct mutex tree_log_mutex; |
a74a4b97 CM |
850 | struct mutex transaction_kthread_mutex; |
851 | struct mutex cleaner_mutex; | |
925baedd | 852 | struct mutex chunk_mutex; |
53b381b3 | 853 | |
1bbc621e CM |
854 | /* |
855 | * this is taken to make sure we don't set block groups ro after | |
856 | * the free space cache has been allocated on them | |
857 | */ | |
858 | struct mutex ro_block_group_mutex; | |
859 | ||
53b381b3 DW |
860 | /* this is used during read/modify/write to make sure |
861 | * no two ios are trying to mod the same stripe at the same | |
862 | * time | |
863 | */ | |
864 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
865 | ||
5a3f23d5 CM |
866 | /* |
867 | * this protects the ordered operations list only while we are | |
868 | * processing all of the entries on it. This way we make | |
869 | * sure the commit code doesn't find the list temporarily empty | |
870 | * because another function happens to be doing non-waiting preflush | |
871 | * before jumping into the main commit. | |
872 | */ | |
873 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 874 | |
9e351cc8 | 875 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 876 | |
c71bf099 | 877 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 878 | |
c71bf099 | 879 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
880 | struct srcu_struct subvol_srcu; |
881 | ||
a4abeea4 | 882 | spinlock_t trans_lock; |
7585717f CM |
883 | /* |
884 | * the reloc mutex goes with the trans lock, it is taken | |
885 | * during commit to protect us from the relocation code | |
886 | */ | |
887 | struct mutex reloc_mutex; | |
888 | ||
8fd17795 | 889 | struct list_head trans_list; |
facda1e7 | 890 | struct list_head dead_roots; |
11833d66 | 891 | struct list_head caching_block_groups; |
e02119d5 | 892 | |
24bbcf04 YZ |
893 | spinlock_t delayed_iput_lock; |
894 | struct list_head delayed_iputs; | |
c2d6cb16 | 895 | struct mutex cleaner_delayed_iput_mutex; |
24bbcf04 | 896 | |
f29021b2 JS |
897 | /* this protects tree_mod_seq_list */ |
898 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 899 | atomic64_t tree_mod_seq; |
f29021b2 JS |
900 | struct list_head tree_mod_seq_list; |
901 | ||
902 | /* this protects tree_mod_log */ | |
903 | rwlock_t tree_mod_log_lock; | |
904 | struct rb_root tree_mod_log; | |
905 | ||
771ed689 | 906 | atomic_t async_delalloc_pages; |
ce9adaa5 | 907 | |
3eaa2885 | 908 | /* |
199c2a9c | 909 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 910 | */ |
199c2a9c | 911 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
912 | |
913 | /* | |
199c2a9c MX |
914 | * all fs/file tree roots in which there are data=ordered extents |
915 | * pending writeback are added into this list. | |
916 | * | |
5a3f23d5 CM |
917 | * these can span multiple transactions and basically include |
918 | * every dirty data page that isn't from nodatacow | |
919 | */ | |
199c2a9c | 920 | struct list_head ordered_roots; |
5a3f23d5 | 921 | |
573bfb72 | 922 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
923 | spinlock_t delalloc_root_lock; |
924 | /* all fs/file tree roots that have delalloc inodes. */ | |
925 | struct list_head delalloc_roots; | |
3eaa2885 | 926 | |
8b712842 CM |
927 | /* |
928 | * there is a pool of worker threads for checksumming during writes | |
929 | * and a pool for checksumming after reads. This is because readers | |
930 | * can run with FS locks held, and the writers may be waiting for | |
931 | * those locks. We don't want ordering in the pending list to cause | |
932 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
933 | * |
934 | * A third pool does submit_bio to avoid deadlocking with the other | |
935 | * two | |
8b712842 | 936 | */ |
d458b054 QW |
937 | struct btrfs_workqueue *workers; |
938 | struct btrfs_workqueue *delalloc_workers; | |
939 | struct btrfs_workqueue *flush_workers; | |
940 | struct btrfs_workqueue *endio_workers; | |
941 | struct btrfs_workqueue *endio_meta_workers; | |
942 | struct btrfs_workqueue *endio_raid56_workers; | |
8b110e39 | 943 | struct btrfs_workqueue *endio_repair_workers; |
d458b054 QW |
944 | struct btrfs_workqueue *rmw_workers; |
945 | struct btrfs_workqueue *endio_meta_write_workers; | |
946 | struct btrfs_workqueue *endio_write_workers; | |
947 | struct btrfs_workqueue *endio_freespace_worker; | |
948 | struct btrfs_workqueue *submit_workers; | |
949 | struct btrfs_workqueue *caching_workers; | |
950 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 951 | |
247e743c CM |
952 | /* |
953 | * fixup workers take dirty pages that didn't properly go through | |
954 | * the cow mechanism and make them safe to write. It happens | |
955 | * for the sys_munmap function call path | |
956 | */ | |
d458b054 QW |
957 | struct btrfs_workqueue *fixup_workers; |
958 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b CM |
959 | |
960 | /* the extent workers do delayed refs on the extent allocation tree */ | |
961 | struct btrfs_workqueue *extent_workers; | |
a74a4b97 CM |
962 | struct task_struct *transaction_kthread; |
963 | struct task_struct *cleaner_kthread; | |
f7b885be | 964 | u32 thread_pool_size; |
8b712842 | 965 | |
6ab0a202 | 966 | struct kobject *space_info_kobj; |
75cb379d JM |
967 | struct list_head pending_raid_kobjs; |
968 | spinlock_t pending_raid_kobjs_lock; /* uncontended */ | |
9f5fae2f | 969 | |
324ae4df | 970 | u64 total_pinned; |
b9473439 | 971 | |
e2d84521 MX |
972 | /* used to keep from writing metadata until there is a nice batch */ |
973 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 974 | struct percpu_counter delalloc_bytes; |
e2d84521 | 975 | s32 dirty_metadata_batch; |
963d678b MX |
976 | s32 delalloc_batch; |
977 | ||
0b86a832 CM |
978 | struct list_head dirty_cowonly_roots; |
979 | ||
8a4b83cc | 980 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
981 | |
982 | /* | |
dc2d3005 JM |
983 | * The space_info list is effectively read only after initial |
984 | * setup. It is populated at mount time and cleaned up after | |
985 | * all block groups are removed. RCU is used to protect it. | |
4184ea7f | 986 | */ |
6324fbf3 | 987 | struct list_head space_info; |
4184ea7f | 988 | |
b4d7c3c9 LZ |
989 | struct btrfs_space_info *data_sinfo; |
990 | ||
5d4f98a2 YZ |
991 | struct reloc_control *reloc_ctl; |
992 | ||
583b7231 | 993 | /* data_alloc_cluster is only used in ssd_spread mode */ |
fa9c0d79 CM |
994 | struct btrfs_free_cluster data_alloc_cluster; |
995 | ||
996 | /* all metadata allocations go through this cluster */ | |
997 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 998 | |
4cb5300b CM |
999 | /* auto defrag inodes go here */ |
1000 | spinlock_t defrag_inodes_lock; | |
1001 | struct rb_root defrag_inodes; | |
1002 | atomic_t defrag_running; | |
1003 | ||
de98ced9 MX |
1004 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
1005 | seqlock_t profiles_lock; | |
a46d11a8 ID |
1006 | /* |
1007 | * these three are in extended format (availability of single | |
1008 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
1009 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
1010 | */ | |
d18a2c44 CM |
1011 | u64 avail_data_alloc_bits; |
1012 | u64 avail_metadata_alloc_bits; | |
1013 | u64 avail_system_alloc_bits; | |
788f20eb | 1014 | |
c9e9f97b ID |
1015 | /* restriper state */ |
1016 | spinlock_t balance_lock; | |
1017 | struct mutex balance_mutex; | |
837d5b6e | 1018 | atomic_t balance_pause_req; |
a7e99c69 | 1019 | atomic_t balance_cancel_req; |
c9e9f97b | 1020 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1021 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1022 | |
d612ac59 AJ |
1023 | u32 data_chunk_allocations; |
1024 | u32 metadata_ratio; | |
97e728d4 | 1025 | |
788f20eb | 1026 | void *bdev_holder; |
acce952b | 1027 | |
a2de733c AJ |
1028 | /* private scrub information */ |
1029 | struct mutex scrub_lock; | |
1030 | atomic_t scrubs_running; | |
1031 | atomic_t scrub_pause_req; | |
1032 | atomic_t scrubs_paused; | |
1033 | atomic_t scrub_cancel_req; | |
1034 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 1035 | int scrub_workers_refcnt; |
d458b054 QW |
1036 | struct btrfs_workqueue *scrub_workers; |
1037 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
1038 | struct btrfs_workqueue *scrub_nocow_workers; | |
20b2e302 | 1039 | struct btrfs_workqueue *scrub_parity_workers; |
a2de733c | 1040 | |
21adbd5c SB |
1041 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1042 | u32 check_integrity_print_mask; | |
1043 | #endif | |
416ac51d AJ |
1044 | /* is qgroup tracking in a consistent state? */ |
1045 | u64 qgroup_flags; | |
1046 | ||
1047 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1048 | struct rb_root qgroup_tree; | |
fcebe456 | 1049 | struct rb_root qgroup_op_tree; |
416ac51d | 1050 | spinlock_t qgroup_lock; |
fcebe456 JB |
1051 | spinlock_t qgroup_op_lock; |
1052 | atomic_t qgroup_op_seq; | |
416ac51d | 1053 | |
1e8f9158 WS |
1054 | /* |
1055 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1056 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1057 | */ | |
1058 | struct ulist *qgroup_ulist; | |
1059 | ||
f2f6ed3d WS |
1060 | /* protect user change for quota operations */ |
1061 | struct mutex qgroup_ioctl_lock; | |
1062 | ||
416ac51d AJ |
1063 | /* list of dirty qgroups to be written at next commit */ |
1064 | struct list_head dirty_qgroups; | |
1065 | ||
e69bcee3 | 1066 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 1067 | u64 qgroup_seq; |
21adbd5c | 1068 | |
2f232036 JS |
1069 | /* qgroup rescan items */ |
1070 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1071 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1072 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1073 | struct completion qgroup_rescan_completion; |
b382a324 | 1074 | struct btrfs_work qgroup_rescan_work; |
d2c609b8 | 1075 | bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ |
2f232036 | 1076 | |
acce952b | 1077 | /* filesystem state */ |
87533c47 | 1078 | unsigned long fs_state; |
16cdcec7 MX |
1079 | |
1080 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1081 | |
90519d66 AJ |
1082 | /* readahead tree */ |
1083 | spinlock_t reada_lock; | |
1084 | struct radix_tree_root reada_tree; | |
531f4b1a | 1085 | |
2fefd558 ZL |
1086 | /* readahead works cnt */ |
1087 | atomic_t reada_works_cnt; | |
1088 | ||
f28491e0 JB |
1089 | /* Extent buffer radix tree */ |
1090 | spinlock_t buffer_lock; | |
1091 | struct radix_tree_root buffer_radix; | |
1092 | ||
af31f5e5 CM |
1093 | /* next backup root to be overwritten */ |
1094 | int backup_root_index; | |
5af3e8cc | 1095 | |
e922e087 SB |
1096 | /* device replace state */ |
1097 | struct btrfs_dev_replace dev_replace; | |
5ac00add | 1098 | |
c404e0dc MX |
1099 | struct percpu_counter bio_counter; |
1100 | wait_queue_head_t replace_wait; | |
1101 | ||
803b2f54 | 1102 | struct semaphore uuid_tree_rescan_sem; |
21c7e756 MX |
1103 | |
1104 | /* Used to reclaim the metadata space in the background. */ | |
1105 | struct work_struct async_reclaim_work; | |
47ab2a6c JB |
1106 | |
1107 | spinlock_t unused_bgs_lock; | |
1108 | struct list_head unused_bgs; | |
d4b450cd | 1109 | struct mutex unused_bg_unpin_mutex; |
67c5e7d4 | 1110 | struct mutex delete_unused_bgs_mutex; |
f667aef6 QW |
1111 | |
1112 | /* For btrfs to record security options */ | |
1113 | struct security_mnt_opts security_opts; | |
04216820 FM |
1114 | |
1115 | /* | |
1116 | * Chunks that can't be freed yet (under a trim/discard operation) | |
1117 | * and will be latter freed. Protected by fs_info->chunk_mutex. | |
1118 | */ | |
1119 | struct list_head pinned_chunks; | |
511711af | 1120 | |
da17066c JM |
1121 | /* Cached block sizes */ |
1122 | u32 nodesize; | |
1123 | u32 sectorsize; | |
1124 | u32 stripesize; | |
fd708b81 JB |
1125 | |
1126 | #ifdef CONFIG_BTRFS_FS_REF_VERIFY | |
1127 | spinlock_t ref_verify_lock; | |
1128 | struct rb_root block_tree; | |
1129 | #endif | |
324ae4df | 1130 | }; |
0b86a832 | 1131 | |
da17066c JM |
1132 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
1133 | { | |
1134 | return sb->s_fs_info; | |
1135 | } | |
1136 | ||
8257b2dc MX |
1137 | struct btrfs_subvolume_writers { |
1138 | struct percpu_counter counter; | |
1139 | wait_queue_head_t wait; | |
1140 | }; | |
1141 | ||
27cdeb70 MX |
1142 | /* |
1143 | * The state of btrfs root | |
1144 | */ | |
1145 | /* | |
1146 | * btrfs_record_root_in_trans is a multi-step process, | |
1147 | * and it can race with the balancing code. But the | |
1148 | * race is very small, and only the first time the root | |
1149 | * is added to each transaction. So IN_TRANS_SETUP | |
1150 | * is used to tell us when more checks are required | |
1151 | */ | |
1152 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 | |
1153 | #define BTRFS_ROOT_REF_COWS 1 | |
1154 | #define BTRFS_ROOT_TRACK_DIRTY 2 | |
1155 | #define BTRFS_ROOT_IN_RADIX 3 | |
f5ee5c9a JM |
1156 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 4 |
1157 | #define BTRFS_ROOT_DEFRAG_RUNNING 5 | |
1158 | #define BTRFS_ROOT_FORCE_COW 6 | |
1159 | #define BTRFS_ROOT_MULTI_LOG_TASKS 7 | |
1160 | #define BTRFS_ROOT_DIRTY 8 | |
27cdeb70 | 1161 | |
9f5fae2f CM |
1162 | /* |
1163 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1164 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1165 | */ |
1166 | struct btrfs_root { | |
5f39d397 | 1167 | struct extent_buffer *node; |
925baedd | 1168 | |
5f39d397 | 1169 | struct extent_buffer *commit_root; |
e02119d5 | 1170 | struct btrfs_root *log_root; |
1a40e23b | 1171 | struct btrfs_root *reloc_root; |
31153d81 | 1172 | |
27cdeb70 | 1173 | unsigned long state; |
62e2749e CM |
1174 | struct btrfs_root_item root_item; |
1175 | struct btrfs_key root_key; | |
9f5fae2f | 1176 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1177 | struct extent_io_tree dirty_log_pages; |
1178 | ||
a2135011 | 1179 | struct mutex objectid_mutex; |
7237f183 | 1180 | |
f0486c68 YZ |
1181 | spinlock_t accounting_lock; |
1182 | struct btrfs_block_rsv *block_rsv; | |
1183 | ||
581bb050 | 1184 | /* free ino cache stuff */ |
581bb050 | 1185 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1186 | enum btrfs_caching_type ino_cache_state; |
1187 | spinlock_t ino_cache_lock; | |
1188 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1189 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1190 | u64 ino_cache_progress; |
1191 | struct inode *ino_cache_inode; | |
581bb050 | 1192 | |
e02119d5 | 1193 | struct mutex log_mutex; |
7237f183 YZ |
1194 | wait_queue_head_t log_writer_wait; |
1195 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1196 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1197 | atomic_t log_writers; |
1198 | atomic_t log_commit[2]; | |
2ecb7923 | 1199 | atomic_t log_batch; |
bb14a59b | 1200 | int log_transid; |
d1433deb MX |
1201 | /* No matter the commit succeeds or not*/ |
1202 | int log_transid_committed; | |
1203 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1204 | int last_log_commit; |
ff782e0a | 1205 | pid_t log_start_pid; |
ea8c2819 | 1206 | |
0f7d52f4 CM |
1207 | u64 objectid; |
1208 | u64 last_trans; | |
5f39d397 | 1209 | |
9f5fae2f | 1210 | u32 type; |
13a8a7c8 YZ |
1211 | |
1212 | u64 highest_objectid; | |
7585717f | 1213 | |
05653ef3 | 1214 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
0d4cf4e6 | 1215 | /* only used with CONFIG_BTRFS_FS_RUN_SANITY_TESTS is enabled */ |
faa2dbf0 | 1216 | u64 alloc_bytenr; |
05653ef3 | 1217 | #endif |
faa2dbf0 | 1218 | |
3f157a2f | 1219 | u64 defrag_trans_start; |
6702ed49 | 1220 | struct btrfs_key defrag_progress; |
0ef3e66b | 1221 | struct btrfs_key defrag_max; |
58176a96 | 1222 | char *name; |
0b86a832 CM |
1223 | |
1224 | /* the dirty list is only used by non-reference counted roots */ | |
1225 | struct list_head dirty_list; | |
7b128766 | 1226 | |
5d4f98a2 YZ |
1227 | struct list_head root_list; |
1228 | ||
2ab28f32 JB |
1229 | spinlock_t log_extents_lock[2]; |
1230 | struct list_head logged_list[2]; | |
1231 | ||
d68fc57b | 1232 | int orphan_cleanup_state; |
3394e160 | 1233 | |
5d4f98a2 YZ |
1234 | spinlock_t inode_lock; |
1235 | /* red-black tree that keeps track of in-memory inodes */ | |
1236 | struct rb_root inode_tree; | |
1237 | ||
16cdcec7 MX |
1238 | /* |
1239 | * radix tree that keeps track of delayed nodes of every inode, | |
1240 | * protected by inode_lock | |
1241 | */ | |
1242 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1243 | /* |
1244 | * right now this just gets used so that a root has its own devid | |
1245 | * for stat. It may be used for more later | |
1246 | */ | |
0ee5dc67 | 1247 | dev_t anon_dev; |
f1ebcc74 | 1248 | |
5f3ab90a | 1249 | spinlock_t root_item_lock; |
0700cea7 | 1250 | refcount_t refs; |
eb73c1b7 | 1251 | |
573bfb72 | 1252 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1253 | spinlock_t delalloc_lock; |
1254 | /* | |
1255 | * all of the inodes that have delalloc bytes. It is possible for | |
1256 | * this list to be empty even when there is still dirty data=ordered | |
1257 | * extents waiting to finish IO. | |
1258 | */ | |
1259 | struct list_head delalloc_inodes; | |
1260 | struct list_head delalloc_root; | |
1261 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1262 | |
1263 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1264 | /* |
1265 | * this is used by the balancing code to wait for all the pending | |
1266 | * ordered extents | |
1267 | */ | |
1268 | spinlock_t ordered_extent_lock; | |
1269 | ||
1270 | /* | |
1271 | * all of the data=ordered extents pending writeback | |
1272 | * these can span multiple transactions and basically include | |
1273 | * every dirty data page that isn't from nodatacow | |
1274 | */ | |
1275 | struct list_head ordered_extents; | |
1276 | struct list_head ordered_root; | |
1277 | u64 nr_ordered_extents; | |
2c686537 DS |
1278 | |
1279 | /* | |
1280 | * Number of currently running SEND ioctls to prevent | |
1281 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1282 | */ | |
1283 | int send_in_progress; | |
8257b2dc | 1284 | struct btrfs_subvolume_writers *subv_writers; |
ea14b57f | 1285 | atomic_t will_be_snapshotted; |
8287475a QW |
1286 | |
1287 | /* For qgroup metadata reserved space */ | |
1288 | spinlock_t qgroup_meta_rsv_lock; | |
1289 | u64 qgroup_meta_rsv_pertrans; | |
1290 | u64 qgroup_meta_rsv_prealloc; | |
62e2749e | 1291 | }; |
118c701e | 1292 | |
23b5ec74 | 1293 | struct btrfs_file_private { |
23b5ec74 JB |
1294 | void *filldir_buf; |
1295 | }; | |
1296 | ||
da17066c JM |
1297 | static inline u32 btrfs_inode_sectorsize(const struct inode *inode) |
1298 | { | |
1299 | return btrfs_sb(inode->i_sb)->sectorsize; | |
1300 | } | |
62e2749e | 1301 | |
da17066c | 1302 | static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1303 | { |
118c701e NB |
1304 | |
1305 | return info->nodesize - sizeof(struct btrfs_header); | |
1db1ff92 JM |
1306 | } |
1307 | ||
3d9ec8c4 NB |
1308 | #define BTRFS_LEAF_DATA_OFFSET offsetof(struct btrfs_leaf, items) |
1309 | ||
da17066c | 1310 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1311 | { |
da17066c | 1312 | return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item); |
1db1ff92 JM |
1313 | } |
1314 | ||
da17066c | 1315 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info) |
1db1ff92 | 1316 | { |
da17066c | 1317 | return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr); |
1db1ff92 JM |
1318 | } |
1319 | ||
1320 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ | |
1321 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
da17066c | 1322 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1323 | { |
da17066c | 1324 | return BTRFS_MAX_ITEM_SIZE(info) - |
1db1ff92 JM |
1325 | BTRFS_FILE_EXTENT_INLINE_DATA_START; |
1326 | } | |
1327 | ||
da17066c | 1328 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1329 | { |
da17066c | 1330 | return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item); |
1db1ff92 JM |
1331 | } |
1332 | ||
0942caa3 DS |
1333 | /* |
1334 | * Flags for mount options. | |
1335 | * | |
1336 | * Note: don't forget to add new options to btrfs_show_options() | |
1337 | */ | |
21ad10cf CM |
1338 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1339 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1340 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1341 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1342 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1343 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1344 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1345 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1346 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1347 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1348 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1349 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1350 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1351 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1352 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1353 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1354 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1355 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
8dcddfa0 | 1356 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
9555c6c1 | 1357 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1358 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1359 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1360 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 1361 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
d0bd4560 JB |
1362 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
1363 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) | |
f7d3d2f9 | 1364 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
96da0919 | 1365 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
fb592373 | 1366 | #define BTRFS_MOUNT_REF_VERIFY (1 << 28) |
b6cda9bc | 1367 | |
8b87dc17 | 1368 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1369 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1370 | |
b6cda9bc CM |
1371 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1372 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1373 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
3cdde224 | 1374 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
b6cda9bc | 1375 | BTRFS_MOUNT_##opt) |
572d9ab7 | 1376 | |
3cdde224 | 1377 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1378 | { \ |
3cdde224 JM |
1379 | if (!btrfs_test_opt(fs_info, opt)) \ |
1380 | btrfs_info(fs_info, fmt, ##args); \ | |
1381 | btrfs_set_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1382 | } |
1383 | ||
3cdde224 | 1384 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1385 | { \ |
3cdde224 JM |
1386 | if (btrfs_test_opt(fs_info, opt)) \ |
1387 | btrfs_info(fs_info, fmt, ##args); \ | |
1388 | btrfs_clear_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1389 | } |
1390 | ||
d0bd4560 JB |
1391 | #ifdef CONFIG_BTRFS_DEBUG |
1392 | static inline int | |
2ff7e61e | 1393 | btrfs_should_fragment_free_space(struct btrfs_block_group_cache *block_group) |
d0bd4560 | 1394 | { |
2ff7e61e | 1395 | struct btrfs_fs_info *fs_info = block_group->fs_info; |
0b246afa JM |
1396 | |
1397 | return (btrfs_test_opt(fs_info, FRAGMENT_METADATA) && | |
d0bd4560 | 1398 | block_group->flags & BTRFS_BLOCK_GROUP_METADATA) || |
0b246afa | 1399 | (btrfs_test_opt(fs_info, FRAGMENT_DATA) && |
d0bd4560 JB |
1400 | block_group->flags & BTRFS_BLOCK_GROUP_DATA); |
1401 | } | |
1402 | #endif | |
1403 | ||
572d9ab7 DS |
1404 | /* |
1405 | * Requests for changes that need to be done during transaction commit. | |
1406 | * | |
1407 | * Internal mount options that are used for special handling of the real | |
1408 | * mount options (eg. cannot be set during remount and have to be set during | |
1409 | * transaction commit) | |
1410 | */ | |
1411 | ||
7e1876ac DS |
1412 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
1413 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) | |
d51033d0 | 1414 | #define BTRFS_PENDING_COMMIT (2) |
7e1876ac | 1415 | |
572d9ab7 DS |
1416 | #define btrfs_test_pending(info, opt) \ |
1417 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1418 | #define btrfs_set_pending(info, opt) \ | |
1419 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1420 | #define btrfs_clear_pending(info, opt) \ | |
1421 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1422 | ||
1423 | /* | |
1424 | * Helpers for setting pending mount option changes. | |
1425 | * | |
1426 | * Expects corresponding macros | |
1427 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1428 | */ | |
1429 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1430 | do { \ | |
1431 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1432 | btrfs_info((info), fmt, ##args); \ | |
1433 | btrfs_set_pending((info), SET_##opt); \ | |
1434 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1435 | } \ | |
1436 | } while(0) | |
1437 | ||
1438 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1439 | do { \ | |
1440 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1441 | btrfs_info((info), fmt, ##args); \ | |
1442 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1443 | btrfs_clear_pending((info), SET_##opt); \ | |
1444 | } \ | |
1445 | } while(0) | |
1446 | ||
b98b6767 Y |
1447 | /* |
1448 | * Inode flags | |
1449 | */ | |
fdebe2bd Y |
1450 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1451 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1452 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1453 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1454 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1455 | #define BTRFS_INODE_SYNC (1 << 5) |
1456 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1457 | #define BTRFS_INODE_APPEND (1 << 7) | |
1458 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1459 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1460 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1461 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1462 | |
08fe4db1 LZ |
1463 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1464 | ||
cfed81a0 | 1465 | struct btrfs_map_token { |
1cbb1f45 | 1466 | const struct extent_buffer *eb; |
cfed81a0 CM |
1467 | char *kaddr; |
1468 | unsigned long offset; | |
1469 | }; | |
1470 | ||
2e78c927 CR |
1471 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
1472 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) | |
1473 | ||
cfed81a0 CM |
1474 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
1475 | { | |
ad914559 | 1476 | token->kaddr = NULL; |
cfed81a0 CM |
1477 | } |
1478 | ||
01327610 | 1479 | /* some macros to generate set/get functions for the struct fields. This |
5f39d397 CM |
1480 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
1481 | * one for u8: | |
1482 | */ | |
1483 | #define le8_to_cpu(v) (v) | |
1484 | #define cpu_to_le8(v) (v) | |
1485 | #define __le8 u8 | |
1486 | ||
62e85577 | 1487 | #define read_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1488 | read_extent_buffer(eb, (char *)(result), \ |
1489 | ((unsigned long)(ptr)) + \ | |
1490 | offsetof(type, member), \ | |
1491 | sizeof(((type *)0)->member))) | |
1492 | ||
62e85577 | 1493 | #define write_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1494 | write_extent_buffer(eb, (char *)(result), \ |
1495 | ((unsigned long)(ptr)) + \ | |
1496 | offsetof(type, member), \ | |
1497 | sizeof(((type *)0)->member))) | |
1498 | ||
18077bb4 | 1499 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1cbb1f45 JM |
1500 | u##bits btrfs_get_token_##bits(const struct extent_buffer *eb, \ |
1501 | const void *ptr, unsigned long off, \ | |
1502 | struct btrfs_map_token *token); \ | |
1503 | void btrfs_set_token_##bits(struct extent_buffer *eb, const void *ptr, \ | |
18077bb4 LZ |
1504 | unsigned long off, u##bits val, \ |
1505 | struct btrfs_map_token *token); \ | |
1cbb1f45 JM |
1506 | static inline u##bits btrfs_get_##bits(const struct extent_buffer *eb, \ |
1507 | const void *ptr, \ | |
18077bb4 LZ |
1508 | unsigned long off) \ |
1509 | { \ | |
1510 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1511 | } \ | |
1cbb1f45 | 1512 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr,\ |
18077bb4 LZ |
1513 | unsigned long off, u##bits val) \ |
1514 | { \ | |
1515 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1516 | } | |
1517 | ||
1518 | DECLARE_BTRFS_SETGET_BITS(8) | |
1519 | DECLARE_BTRFS_SETGET_BITS(16) | |
1520 | DECLARE_BTRFS_SETGET_BITS(32) | |
1521 | DECLARE_BTRFS_SETGET_BITS(64) | |
1522 | ||
5f39d397 | 1523 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
1cbb1f45 JM |
1524 | static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ |
1525 | const type *s) \ | |
18077bb4 LZ |
1526 | { \ |
1527 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1528 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1529 | } \ | |
1530 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1531 | u##bits val) \ | |
1532 | { \ | |
1533 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1534 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1535 | } \ | |
1cbb1f45 JM |
1536 | static inline u##bits btrfs_token_##name(const struct extent_buffer *eb,\ |
1537 | const type *s, \ | |
18077bb4 LZ |
1538 | struct btrfs_map_token *token) \ |
1539 | { \ | |
1540 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1541 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1542 | } \ | |
1543 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
1544 | type *s, u##bits val, \ | |
1545 | struct btrfs_map_token *token) \ | |
1546 | { \ | |
1547 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1548 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
1549 | } | |
5f39d397 CM |
1550 | |
1551 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1cbb1f45 | 1552 | static inline u##bits btrfs_##name(const struct extent_buffer *eb) \ |
5f39d397 | 1553 | { \ |
1cbb1f45 | 1554 | const type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1555 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1556 | return res; \ |
5f39d397 CM |
1557 | } \ |
1558 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1559 | u##bits val) \ | |
1560 | { \ | |
727011e0 | 1561 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1562 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1563 | } |
9078a3e1 | 1564 | |
5f39d397 | 1565 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1cbb1f45 | 1566 | static inline u##bits btrfs_##name(const type *s) \ |
5f39d397 CM |
1567 | { \ |
1568 | return le##bits##_to_cpu(s->member); \ | |
1569 | } \ | |
1570 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1571 | { \ | |
1572 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1573 | } |
1574 | ||
eca152ed NB |
1575 | |
1576 | static inline u64 btrfs_device_total_bytes(struct extent_buffer *eb, | |
1577 | struct btrfs_dev_item *s) | |
1578 | { | |
1579 | BUILD_BUG_ON(sizeof(u64) != | |
1580 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
1581 | return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, | |
1582 | total_bytes)); | |
1583 | } | |
1584 | static inline void btrfs_set_device_total_bytes(struct extent_buffer *eb, | |
1585 | struct btrfs_dev_item *s, | |
1586 | u64 val) | |
1587 | { | |
1588 | BUILD_BUG_ON(sizeof(u64) != | |
1589 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
7dfb8be1 | 1590 | WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize)); |
eca152ed NB |
1591 | btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val); |
1592 | } | |
1593 | ||
1594 | ||
0b86a832 | 1595 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
0b86a832 CM |
1596 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
1597 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1598 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1599 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1600 | start_offset, 64); | |
0b86a832 CM |
1601 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1602 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1603 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1604 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1605 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1606 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1607 | |
8a4b83cc CM |
1608 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1609 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1610 | total_bytes, 64); | |
1611 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1612 | bytes_used, 64); | |
1613 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1614 | io_align, 32); | |
1615 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1616 | io_width, 32); | |
1617 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1618 | sector_size, 32); | |
1619 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1620 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1621 | dev_group, 32); | |
1622 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1623 | seek_speed, 8); | |
1624 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1625 | bandwidth, 8); | |
2b82032c YZ |
1626 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1627 | generation, 64); | |
8a4b83cc | 1628 | |
410ba3a2 | 1629 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1630 | { |
410ba3a2 | 1631 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1632 | } |
1633 | ||
1473b24e | 1634 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1635 | { |
1473b24e | 1636 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1637 | } |
1638 | ||
e17cade2 | 1639 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1640 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1641 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1642 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1643 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1644 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1645 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1646 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1647 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1648 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1649 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1650 | ||
e17cade2 CM |
1651 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1652 | { | |
1653 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1654 | } | |
1655 | ||
1656 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1657 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1658 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1659 | stripe_len, 64); | |
1660 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1661 | io_align, 32); | |
1662 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1663 | io_width, 32); | |
1664 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1665 | sector_size, 32); | |
1666 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1667 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1668 | num_stripes, 16); | |
321aecc6 CM |
1669 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1670 | sub_stripes, 16); | |
0b86a832 CM |
1671 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1672 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1673 | ||
1674 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1675 | int nr) | |
1676 | { | |
1677 | unsigned long offset = (unsigned long)c; | |
1678 | offset += offsetof(struct btrfs_chunk, stripe); | |
1679 | offset += nr * sizeof(struct btrfs_stripe); | |
1680 | return (struct btrfs_stripe *)offset; | |
1681 | } | |
1682 | ||
a443755f CM |
1683 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1684 | { | |
1685 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1686 | } | |
1687 | ||
0b86a832 CM |
1688 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1689 | struct btrfs_chunk *c, int nr) | |
1690 | { | |
1691 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1692 | } | |
1693 | ||
0b86a832 CM |
1694 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1695 | struct btrfs_chunk *c, int nr) | |
1696 | { | |
1697 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1698 | } | |
1699 | ||
5f39d397 CM |
1700 | /* struct btrfs_block_group_item */ |
1701 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1702 | used, 64); | |
1703 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1704 | used, 64); | |
0b86a832 CM |
1705 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1706 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1707 | |
1708 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1709 | struct btrfs_block_group_item, chunk_objectid, 64); |
1710 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1711 | struct btrfs_block_group_item, flags, 64); | |
1712 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1713 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1714 | |
208acb8c OS |
1715 | /* struct btrfs_free_space_info */ |
1716 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1717 | extent_count, 32); | |
1718 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1719 | ||
3954401f CM |
1720 | /* struct btrfs_inode_ref */ |
1721 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1722 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1723 | |
f186373f MF |
1724 | /* struct btrfs_inode_extref */ |
1725 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1726 | parent_objectid, 64); | |
1727 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1728 | name_len, 16); | |
1729 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1730 | ||
5f39d397 CM |
1731 | /* struct btrfs_inode_item */ |
1732 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1733 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1734 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1735 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1736 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1737 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1738 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1739 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1740 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1741 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1742 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1743 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1744 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1745 | generation, 64); | |
1746 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1747 | sequence, 64); | |
1748 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1749 | transid, 64); | |
1750 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1751 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1752 | nbytes, 64); | |
1753 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1754 | block_group, 64); | |
1755 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1756 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1757 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1758 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1759 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1760 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1761 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1762 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1763 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1764 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1765 | |
0b86a832 | 1766 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1767 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1768 | chunk_tree, 64); | |
1769 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1770 | chunk_objectid, 64); | |
1771 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1772 | chunk_offset, 64); | |
0b86a832 CM |
1773 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1774 | ||
231e88f4 | 1775 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
1776 | { |
1777 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 1778 | return (unsigned long)dev + ptr; |
e17cade2 CM |
1779 | } |
1780 | ||
5d4f98a2 YZ |
1781 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1782 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1783 | generation, 64); | |
1784 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1785 | |
5d4f98a2 YZ |
1786 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1787 | ||
1788 | ||
1789 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1790 | ||
1791 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1792 | struct btrfs_tree_block_info *item, | |
1793 | struct btrfs_disk_key *key) | |
1794 | { | |
1795 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1796 | } | |
1797 | ||
1798 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1799 | struct btrfs_tree_block_info *item, | |
1800 | struct btrfs_disk_key *key) | |
1801 | { | |
1802 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1803 | } | |
e20d96d6 | 1804 | |
5d4f98a2 YZ |
1805 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1806 | root, 64); | |
1807 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1808 | objectid, 64); | |
1809 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1810 | offset, 64); | |
1811 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1812 | count, 32); | |
1813 | ||
1814 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1815 | count, 32); | |
1816 | ||
1817 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1818 | type, 8); | |
1819 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1820 | offset, 64); | |
1821 | ||
1822 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1823 | { | |
1824 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1825 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1826 | return sizeof(struct btrfs_extent_inline_ref); | |
1827 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1828 | return sizeof(struct btrfs_shared_data_ref) + | |
1829 | sizeof(struct btrfs_extent_inline_ref); | |
1830 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1831 | return sizeof(struct btrfs_extent_data_ref) + | |
1832 | offsetof(struct btrfs_extent_inline_ref, offset); | |
5d4f98a2 YZ |
1833 | return 0; |
1834 | } | |
1835 | ||
1836 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1837 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1838 | generation, 64); | |
1839 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1840 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1841 | |
5f39d397 CM |
1842 | /* struct btrfs_node */ |
1843 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1844 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
1845 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
1846 | blockptr, 64); | |
1847 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
1848 | generation, 64); | |
e20d96d6 | 1849 | |
5f39d397 | 1850 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1851 | { |
5f39d397 CM |
1852 | unsigned long ptr; |
1853 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1854 | sizeof(struct btrfs_key_ptr) * nr; | |
1855 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1856 | } |
1857 | ||
5f39d397 CM |
1858 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1859 | int nr, u64 val) | |
cf27e1ee | 1860 | { |
5f39d397 CM |
1861 | unsigned long ptr; |
1862 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1863 | sizeof(struct btrfs_key_ptr) * nr; | |
1864 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1865 | } |
1866 | ||
74493f7a CM |
1867 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1868 | { | |
1869 | unsigned long ptr; | |
1870 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1871 | sizeof(struct btrfs_key_ptr) * nr; | |
1872 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1873 | } | |
1874 | ||
1875 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1876 | int nr, u64 val) | |
1877 | { | |
1878 | unsigned long ptr; | |
1879 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1880 | sizeof(struct btrfs_key_ptr) * nr; | |
1881 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1882 | } | |
1883 | ||
810191ff | 1884 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1885 | { |
5f39d397 CM |
1886 | return offsetof(struct btrfs_node, ptrs) + |
1887 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1888 | } |
1889 | ||
1cbb1f45 | 1890 | void btrfs_node_key(const struct extent_buffer *eb, |
e644d021 CM |
1891 | struct btrfs_disk_key *disk_key, int nr); |
1892 | ||
5f39d397 CM |
1893 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1894 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1895 | { |
5f39d397 CM |
1896 | unsigned long ptr; |
1897 | ptr = btrfs_node_key_ptr_offset(nr); | |
1898 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1899 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1900 | } |
1901 | ||
5f39d397 CM |
1902 | /* struct btrfs_item */ |
1903 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1904 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
1905 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
1906 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 1907 | |
5f39d397 | 1908 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1909 | { |
5f39d397 CM |
1910 | return offsetof(struct btrfs_leaf, items) + |
1911 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1912 | } |
1913 | ||
dd3cc16b | 1914 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 1915 | { |
5f39d397 | 1916 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1917 | } |
1918 | ||
1cbb1f45 | 1919 | static inline u32 btrfs_item_end(const struct extent_buffer *eb, |
5f39d397 | 1920 | struct btrfs_item *item) |
0783fcfc | 1921 | { |
5f39d397 | 1922 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1923 | } |
1924 | ||
1cbb1f45 | 1925 | static inline u32 btrfs_item_end_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1926 | { |
dd3cc16b | 1927 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1928 | } |
1929 | ||
1cbb1f45 | 1930 | static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1931 | { |
dd3cc16b | 1932 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1933 | } |
1934 | ||
1cbb1f45 | 1935 | static inline u32 btrfs_item_size_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1936 | { |
dd3cc16b | 1937 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1938 | } |
1939 | ||
1cbb1f45 | 1940 | static inline void btrfs_item_key(const struct extent_buffer *eb, |
5f39d397 | 1941 | struct btrfs_disk_key *disk_key, int nr) |
1d4f6404 | 1942 | { |
dd3cc16b | 1943 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1944 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1945 | } |
1946 | ||
5f39d397 CM |
1947 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1948 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1949 | { |
dd3cc16b | 1950 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1951 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1952 | } |
1953 | ||
e02119d5 CM |
1954 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1955 | ||
0660b5af CM |
1956 | /* |
1957 | * struct btrfs_root_ref | |
1958 | */ | |
1959 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1960 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1961 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1962 | ||
5f39d397 | 1963 | /* struct btrfs_dir_item */ |
5103e947 | 1964 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1965 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1966 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1967 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
1968 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
1969 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
1970 | data_len, 16); | |
1971 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
1972 | name_len, 16); | |
1973 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
1974 | transid, 64); | |
1d4f6404 | 1975 | |
1cbb1f45 JM |
1976 | static inline void btrfs_dir_item_key(const struct extent_buffer *eb, |
1977 | const struct btrfs_dir_item *item, | |
5f39d397 | 1978 | struct btrfs_disk_key *key) |
1d4f6404 | 1979 | { |
5f39d397 | 1980 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1981 | } |
1982 | ||
5f39d397 CM |
1983 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1984 | struct btrfs_dir_item *item, | |
1cbb1f45 | 1985 | const struct btrfs_disk_key *key) |
a8a2ee0c | 1986 | { |
5f39d397 | 1987 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1988 | } |
1989 | ||
0af3d00b JB |
1990 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1991 | num_entries, 64); | |
1992 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1993 | num_bitmaps, 64); | |
1994 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1995 | generation, 64); | |
1996 | ||
1cbb1f45 JM |
1997 | static inline void btrfs_free_space_key(const struct extent_buffer *eb, |
1998 | const struct btrfs_free_space_header *h, | |
0af3d00b JB |
1999 | struct btrfs_disk_key *key) |
2000 | { | |
2001 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2002 | } | |
2003 | ||
2004 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
2005 | struct btrfs_free_space_header *h, | |
1cbb1f45 | 2006 | const struct btrfs_disk_key *key) |
0af3d00b JB |
2007 | { |
2008 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2009 | } | |
2010 | ||
5f39d397 CM |
2011 | /* struct btrfs_disk_key */ |
2012 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2013 | objectid, 64); | |
2014 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2015 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2016 | |
e2fa7227 | 2017 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
310712b2 | 2018 | const struct btrfs_disk_key *disk) |
e2fa7227 CM |
2019 | { |
2020 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2021 | cpu->type = disk->type; |
e2fa7227 CM |
2022 | cpu->objectid = le64_to_cpu(disk->objectid); |
2023 | } | |
2024 | ||
2025 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
310712b2 | 2026 | const struct btrfs_key *cpu) |
e2fa7227 CM |
2027 | { |
2028 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2029 | disk->type = cpu->type; |
e2fa7227 CM |
2030 | disk->objectid = cpu_to_le64(cpu->objectid); |
2031 | } | |
2032 | ||
1cbb1f45 JM |
2033 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, |
2034 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2035 | { |
5f39d397 CM |
2036 | struct btrfs_disk_key disk_key; |
2037 | btrfs_node_key(eb, &disk_key, nr); | |
2038 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2039 | } |
2040 | ||
1cbb1f45 JM |
2041 | static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb, |
2042 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2043 | { |
5f39d397 CM |
2044 | struct btrfs_disk_key disk_key; |
2045 | btrfs_item_key(eb, &disk_key, nr); | |
2046 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2047 | } |
2048 | ||
1cbb1f45 JM |
2049 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, |
2050 | const struct btrfs_dir_item *item, | |
2051 | struct btrfs_key *key) | |
4d775673 | 2052 | { |
5f39d397 CM |
2053 | struct btrfs_disk_key disk_key; |
2054 | btrfs_dir_item_key(eb, item, &disk_key); | |
2055 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2056 | } |
2057 | ||
310712b2 | 2058 | static inline u8 btrfs_key_type(const struct btrfs_key *key) |
3768f368 | 2059 | { |
5f39d397 | 2060 | return key->type; |
3768f368 CM |
2061 | } |
2062 | ||
5f39d397 | 2063 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2064 | { |
5f39d397 | 2065 | key->type = val; |
3768f368 CM |
2066 | } |
2067 | ||
5f39d397 | 2068 | /* struct btrfs_header */ |
db94535d | 2069 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2070 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2071 | generation, 64); | |
2072 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2073 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2074 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2075 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2076 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2077 | generation, 64); | |
2078 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2079 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2080 | nritems, 32); | |
2081 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2082 | |
1cbb1f45 | 2083 | static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag) |
63b10fc4 CM |
2084 | { |
2085 | return (btrfs_header_flags(eb) & flag) == flag; | |
2086 | } | |
2087 | ||
2088 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2089 | { | |
2090 | u64 flags = btrfs_header_flags(eb); | |
2091 | btrfs_set_header_flags(eb, flags | flag); | |
2092 | return (flags & flag) == flag; | |
2093 | } | |
2094 | ||
2095 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2096 | { | |
2097 | u64 flags = btrfs_header_flags(eb); | |
2098 | btrfs_set_header_flags(eb, flags & ~flag); | |
2099 | return (flags & flag) == flag; | |
2100 | } | |
2101 | ||
1cbb1f45 | 2102 | static inline int btrfs_header_backref_rev(const struct extent_buffer *eb) |
5d4f98a2 YZ |
2103 | { |
2104 | u64 flags = btrfs_header_flags(eb); | |
2105 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2106 | } | |
2107 | ||
2108 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2109 | int rev) | |
2110 | { | |
2111 | u64 flags = btrfs_header_flags(eb); | |
2112 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2113 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2114 | btrfs_set_header_flags(eb, flags); | |
2115 | } | |
2116 | ||
0a4e5586 | 2117 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2118 | { |
fba6aa75 | 2119 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2120 | } |
2121 | ||
1cbb1f45 | 2122 | static inline unsigned long btrfs_header_chunk_tree_uuid(const struct extent_buffer *eb) |
e17cade2 | 2123 | { |
b308bc2f | 2124 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2125 | } |
2126 | ||
1cbb1f45 | 2127 | static inline int btrfs_is_leaf(const struct extent_buffer *eb) |
3768f368 | 2128 | { |
d397712b | 2129 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2130 | } |
2131 | ||
5f39d397 | 2132 | /* struct btrfs_root_item */ |
84234f3a YZ |
2133 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2134 | generation, 64); | |
5f39d397 | 2135 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2136 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2137 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2138 | |
84234f3a YZ |
2139 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2140 | generation, 64); | |
db94535d CM |
2141 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2142 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2143 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2144 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2145 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2146 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2147 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2148 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2149 | last_snapshot, 64); | |
8ea05e3a AB |
2150 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2151 | generation_v2, 64); | |
2152 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2153 | ctransid, 64); | |
2154 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2155 | otransid, 64); | |
2156 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2157 | stransid, 64); | |
2158 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2159 | rtransid, 64); | |
123abc88 | 2160 | |
1cbb1f45 | 2161 | static inline bool btrfs_root_readonly(const struct btrfs_root *root) |
b83cc969 | 2162 | { |
6ed3cf2c | 2163 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2164 | } |
2165 | ||
1cbb1f45 | 2166 | static inline bool btrfs_root_dead(const struct btrfs_root *root) |
521e0546 DS |
2167 | { |
2168 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2169 | } | |
2170 | ||
af31f5e5 CM |
2171 | /* struct btrfs_root_backup */ |
2172 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2173 | tree_root, 64); | |
2174 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2175 | tree_root_gen, 64); | |
2176 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2177 | tree_root_level, 8); | |
2178 | ||
2179 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2180 | chunk_root, 64); | |
2181 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2182 | chunk_root_gen, 64); | |
2183 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2184 | chunk_root_level, 8); | |
2185 | ||
2186 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2187 | extent_root, 64); | |
2188 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2189 | extent_root_gen, 64); | |
2190 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2191 | extent_root_level, 8); | |
2192 | ||
2193 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2194 | fs_root, 64); | |
2195 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2196 | fs_root_gen, 64); | |
2197 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2198 | fs_root_level, 8); | |
2199 | ||
2200 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2201 | dev_root, 64); | |
2202 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2203 | dev_root_gen, 64); | |
2204 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2205 | dev_root_level, 8); | |
2206 | ||
2207 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2208 | csum_root, 64); | |
2209 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2210 | csum_root_gen, 64); | |
2211 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2212 | csum_root_level, 8); | |
2213 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2214 | total_bytes, 64); | |
2215 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2216 | bytes_used, 64); | |
2217 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2218 | num_devices, 64); | |
2219 | ||
0940ebf6 ID |
2220 | /* struct btrfs_balance_item */ |
2221 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2222 | |
1cbb1f45 JM |
2223 | static inline void btrfs_balance_data(const struct extent_buffer *eb, |
2224 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2225 | struct btrfs_disk_balance_args *ba) |
2226 | { | |
2227 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2228 | } | |
2229 | ||
2230 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
1cbb1f45 JM |
2231 | struct btrfs_balance_item *bi, |
2232 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2233 | { |
2234 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2235 | } | |
2236 | ||
1cbb1f45 JM |
2237 | static inline void btrfs_balance_meta(const struct extent_buffer *eb, |
2238 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2239 | struct btrfs_disk_balance_args *ba) |
2240 | { | |
2241 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2242 | } | |
2243 | ||
2244 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
1cbb1f45 JM |
2245 | struct btrfs_balance_item *bi, |
2246 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2247 | { |
2248 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2249 | } | |
2250 | ||
1cbb1f45 JM |
2251 | static inline void btrfs_balance_sys(const struct extent_buffer *eb, |
2252 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2253 | struct btrfs_disk_balance_args *ba) |
2254 | { | |
2255 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2256 | } | |
2257 | ||
2258 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
1cbb1f45 JM |
2259 | struct btrfs_balance_item *bi, |
2260 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2261 | { |
2262 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2263 | } | |
2264 | ||
2265 | static inline void | |
2266 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
1cbb1f45 | 2267 | const struct btrfs_disk_balance_args *disk) |
0940ebf6 ID |
2268 | { |
2269 | memset(cpu, 0, sizeof(*cpu)); | |
2270 | ||
2271 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2272 | cpu->usage = le64_to_cpu(disk->usage); | |
2273 | cpu->devid = le64_to_cpu(disk->devid); | |
2274 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2275 | cpu->pend = le64_to_cpu(disk->pend); | |
2276 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2277 | cpu->vend = le64_to_cpu(disk->vend); | |
2278 | cpu->target = le64_to_cpu(disk->target); | |
2279 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2280 | cpu->limit = le64_to_cpu(disk->limit); |
ed0df618 DS |
2281 | cpu->stripes_min = le32_to_cpu(disk->stripes_min); |
2282 | cpu->stripes_max = le32_to_cpu(disk->stripes_max); | |
0940ebf6 ID |
2283 | } |
2284 | ||
2285 | static inline void | |
2286 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
1cbb1f45 | 2287 | const struct btrfs_balance_args *cpu) |
0940ebf6 ID |
2288 | { |
2289 | memset(disk, 0, sizeof(*disk)); | |
2290 | ||
2291 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2292 | disk->usage = cpu_to_le64(cpu->usage); | |
2293 | disk->devid = cpu_to_le64(cpu->devid); | |
2294 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2295 | disk->pend = cpu_to_le64(cpu->pend); | |
2296 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2297 | disk->vend = cpu_to_le64(cpu->vend); | |
2298 | disk->target = cpu_to_le64(cpu->target); | |
2299 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2300 | disk->limit = cpu_to_le64(cpu->limit); |
ed0df618 DS |
2301 | disk->stripes_min = cpu_to_le32(cpu->stripes_min); |
2302 | disk->stripes_max = cpu_to_le32(cpu->stripes_max); | |
0940ebf6 ID |
2303 | } |
2304 | ||
2305 | /* struct btrfs_super_block */ | |
db94535d | 2306 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2307 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2308 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2309 | generation, 64); | |
2310 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2311 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2312 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2313 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2314 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2315 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2316 | root_level, 8); | |
0b86a832 CM |
2317 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2318 | chunk_root, 64); | |
2319 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2320 | chunk_root_level, 8); |
2321 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2322 | log_root, 64); | |
c3027eb5 CM |
2323 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2324 | log_root_transid, 64); | |
e02119d5 CM |
2325 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2326 | log_root_level, 8); | |
db94535d CM |
2327 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2328 | total_bytes, 64); | |
2329 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2330 | bytes_used, 64); | |
5f39d397 CM |
2331 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2332 | sectorsize, 32); | |
2333 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2334 | nodesize, 32); | |
87ee04eb CM |
2335 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2336 | stripesize, 32); | |
5f39d397 CM |
2337 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2338 | root_dir_objectid, 64); | |
8a4b83cc CM |
2339 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2340 | num_devices, 64); | |
f2b636e8 JB |
2341 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2342 | compat_flags, 64); | |
2343 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2344 | compat_ro_flags, 64); |
f2b636e8 JB |
2345 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2346 | incompat_flags, 64); | |
607d432d JB |
2347 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2348 | csum_type, 16); | |
0af3d00b JB |
2349 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2350 | cache_generation, 64); | |
3cae210f | 2351 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2352 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2353 | uuid_tree_generation, 64); | |
607d432d | 2354 | |
1cbb1f45 | 2355 | static inline int btrfs_super_csum_size(const struct btrfs_super_block *s) |
607d432d | 2356 | { |
1104a885 DS |
2357 | u16 t = btrfs_super_csum_type(s); |
2358 | /* | |
2359 | * csum type is validated at mount time | |
2360 | */ | |
607d432d JB |
2361 | return btrfs_csum_sizes[t]; |
2362 | } | |
2e635a27 | 2363 | |
2e635a27 | 2364 | |
851cd173 LB |
2365 | /* |
2366 | * The leaf data grows from end-to-front in the node. | |
2367 | * this returns the address of the start of the last item, | |
2368 | * which is the stop of the leaf data stack | |
2369 | */ | |
1cbb1f45 JM |
2370 | static inline unsigned int leaf_data_end(const struct btrfs_fs_info *fs_info, |
2371 | const struct extent_buffer *leaf) | |
851cd173 LB |
2372 | { |
2373 | u32 nr = btrfs_header_nritems(leaf); | |
2374 | ||
2375 | if (nr == 0) | |
0b246afa | 2376 | return BTRFS_LEAF_DATA_SIZE(fs_info); |
851cd173 LB |
2377 | return btrfs_item_offset_nr(leaf, nr - 1); |
2378 | } | |
2379 | ||
5f39d397 CM |
2380 | /* struct btrfs_file_extent_item */ |
2381 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2382 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2383 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2384 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2385 | struct btrfs_file_extent_item, offset, 64); | |
2386 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2387 | struct btrfs_file_extent_item, generation, 64); | |
2388 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2389 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2390 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2391 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2392 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2393 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2394 | |
d397712b | 2395 | static inline unsigned long |
1cbb1f45 | 2396 | btrfs_file_extent_inline_start(const struct btrfs_file_extent_item *e) |
236454df | 2397 | { |
7ec20afb | 2398 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2399 | } |
2400 | ||
2401 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2402 | { | |
7ec20afb | 2403 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2404 | } |
2405 | ||
db94535d CM |
2406 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2407 | disk_bytenr, 64); | |
5f39d397 CM |
2408 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2409 | generation, 64); | |
db94535d CM |
2410 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2411 | disk_num_bytes, 64); | |
5f39d397 CM |
2412 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2413 | offset, 64); | |
db94535d CM |
2414 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2415 | num_bytes, 64); | |
c8b97818 CM |
2416 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2417 | ram_bytes, 64); | |
2418 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2419 | compression, 8); | |
2420 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2421 | encryption, 8); | |
2422 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2423 | other_encoding, 16); | |
2424 | ||
c8b97818 CM |
2425 | /* |
2426 | * this returns the number of bytes used by the item on disk, minus the | |
2427 | * size of any extent headers. If a file is compressed on disk, this is | |
2428 | * the compressed size | |
2429 | */ | |
1cbb1f45 JM |
2430 | static inline u32 btrfs_file_extent_inline_item_len( |
2431 | const struct extent_buffer *eb, | |
2432 | struct btrfs_item *e) | |
c8b97818 | 2433 | { |
7ec20afb | 2434 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2435 | } |
9f5fae2f | 2436 | |
733f4fbb | 2437 | /* btrfs_dev_stats_item */ |
1cbb1f45 JM |
2438 | static inline u64 btrfs_dev_stats_value(const struct extent_buffer *eb, |
2439 | const struct btrfs_dev_stats_item *ptr, | |
733f4fbb SB |
2440 | int index) |
2441 | { | |
2442 | u64 val; | |
2443 | ||
2444 | read_extent_buffer(eb, &val, | |
2445 | offsetof(struct btrfs_dev_stats_item, values) + | |
2446 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2447 | sizeof(val)); | |
2448 | return val; | |
2449 | } | |
2450 | ||
2451 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2452 | struct btrfs_dev_stats_item *ptr, | |
2453 | int index, u64 val) | |
2454 | { | |
2455 | write_extent_buffer(eb, &val, | |
2456 | offsetof(struct btrfs_dev_stats_item, values) + | |
2457 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2458 | sizeof(val)); | |
2459 | } | |
2460 | ||
630dc772 AJ |
2461 | /* btrfs_qgroup_status_item */ |
2462 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2463 | generation, 64); | |
2464 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2465 | version, 64); | |
2466 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2467 | flags, 64); | |
2f232036 JS |
2468 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2469 | rescan, 64); | |
630dc772 AJ |
2470 | |
2471 | /* btrfs_qgroup_info_item */ | |
2472 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2473 | generation, 64); | |
2474 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2475 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2476 | rfer_cmpr, 64); | |
2477 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2478 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2479 | excl_cmpr, 64); | |
2480 | ||
2481 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2482 | struct btrfs_qgroup_info_item, generation, 64); | |
2483 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2484 | rfer, 64); | |
2485 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2486 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2487 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2488 | excl, 64); | |
2489 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2490 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2491 | ||
2492 | /* btrfs_qgroup_limit_item */ | |
2493 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2494 | flags, 64); | |
2495 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2496 | max_rfer, 64); | |
2497 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2498 | max_excl, 64); | |
2499 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2500 | rsv_rfer, 64); | |
2501 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2502 | rsv_excl, 64); | |
2503 | ||
a2bff640 SB |
2504 | /* btrfs_dev_replace_item */ |
2505 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2506 | struct btrfs_dev_replace_item, src_devid, 64); | |
2507 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2508 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2509 | 64); | |
2510 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2511 | replace_state, 64); | |
2512 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2513 | time_started, 64); | |
2514 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2515 | time_stopped, 64); | |
2516 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2517 | num_write_errors, 64); | |
2518 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2519 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2520 | 64); | |
2521 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2522 | cursor_left, 64); | |
2523 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2524 | cursor_right, 64); | |
2525 | ||
2526 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2527 | struct btrfs_dev_replace_item, src_devid, 64); | |
2528 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2529 | struct btrfs_dev_replace_item, | |
2530 | cont_reading_from_srcdev_mode, 64); | |
2531 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2532 | struct btrfs_dev_replace_item, replace_state, 64); | |
2533 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2534 | struct btrfs_dev_replace_item, time_started, 64); | |
2535 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2536 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2537 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2538 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2539 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2540 | struct btrfs_dev_replace_item, | |
2541 | num_uncorrectable_read_errors, 64); | |
2542 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2543 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2544 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2545 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2546 | ||
4beb1b8b CM |
2547 | /* helper function to cast into the data area of the leaf. */ |
2548 | #define btrfs_item_ptr(leaf, slot, type) \ | |
3d9ec8c4 | 2549 | ((type *)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 CM |
2550 | btrfs_item_offset_nr(leaf, slot))) |
2551 | ||
2552 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
3d9ec8c4 | 2553 | ((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 | 2554 | btrfs_item_offset_nr(leaf, slot))) |
4beb1b8b | 2555 | |
9678c543 NB |
2556 | static inline u64 btrfs_name_hash(const char *name, int len) |
2557 | { | |
2558 | return crc32c((u32)~1, name, len); | |
2559 | } | |
2560 | ||
2561 | /* | |
2562 | * Figure the key offset of an extended inode ref | |
2563 | */ | |
2564 | static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name, | |
2565 | int len) | |
2566 | { | |
2567 | return (u64) crc32c(parent_objectid, name, len); | |
2568 | } | |
2569 | ||
67377734 JB |
2570 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2571 | { | |
2572 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2573 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2574 | } | |
2575 | ||
3b16a4e3 JB |
2576 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2577 | { | |
c62d2555 | 2578 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2579 | } |
2580 | ||
b18c6685 | 2581 | /* extent-tree.c */ |
28f75a0e | 2582 | |
167ce953 LB |
2583 | enum btrfs_inline_ref_type { |
2584 | BTRFS_REF_TYPE_INVALID = 0, | |
2585 | BTRFS_REF_TYPE_BLOCK = 1, | |
2586 | BTRFS_REF_TYPE_DATA = 2, | |
2587 | BTRFS_REF_TYPE_ANY = 3, | |
2588 | }; | |
2589 | ||
2590 | int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb, | |
2591 | struct btrfs_extent_inline_ref *iref, | |
2592 | enum btrfs_inline_ref_type is_data); | |
2593 | ||
2ff7e61e | 2594 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_fs_info *fs_info, u64 csum_bytes); |
28f75a0e | 2595 | |
27965b6c | 2596 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_fs_info *fs_info, |
9e0baf60 | 2597 | unsigned num_items) |
16cdcec7 | 2598 | { |
70e7af24 | 2599 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2600 | } |
2601 | ||
2602 | /* | |
2603 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2604 | * COW. | |
2605 | */ | |
27965b6c | 2606 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info, |
07127184 JB |
2607 | unsigned num_items) |
2608 | { | |
70e7af24 | 2609 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2610 | } |
2611 | ||
1be41b78 | 2612 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
2ff7e61e | 2613 | struct btrfs_fs_info *fs_info); |
0a2b2a84 | 2614 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
2ff7e61e | 2615 | struct btrfs_fs_info *fs_info); |
9cfa3e34 FM |
2616 | void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, |
2617 | const u64 start); | |
2618 | void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); | |
f78c436c FM |
2619 | bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
2620 | void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); | |
2621 | void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg); | |
fa9c0d79 | 2622 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 | 2623 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
c79a70b1 | 2624 | unsigned long count); |
2ff7e61e | 2625 | int btrfs_async_run_delayed_refs(struct btrfs_fs_info *fs_info, |
31b9655f | 2626 | unsigned long count, u64 transid, int wait); |
2ff7e61e | 2627 | int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len); |
a22285a6 | 2628 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2ff7e61e | 2629 | struct btrfs_fs_info *fs_info, u64 bytenr, |
3173a18f | 2630 | u64 offset, int metadata, u64 *refs, u64 *flags); |
2ff7e61e | 2631 | int btrfs_pin_extent(struct btrfs_fs_info *fs_info, |
11833d66 | 2632 | u64 bytenr, u64 num, int reserved); |
2ff7e61e | 2633 | int btrfs_pin_extent_for_log_replay(struct btrfs_fs_info *fs_info, |
e688b725 | 2634 | u64 bytenr, u64 num_bytes); |
2ff7e61e | 2635 | int btrfs_exclude_logged_extents(struct btrfs_fs_info *fs_info, |
8c2a1a30 | 2636 | struct extent_buffer *eb); |
e4c3b2dc | 2637 | int btrfs_cross_ref_exist(struct btrfs_root *root, |
5d4f98a2 | 2638 | u64 objectid, u64 offset, u64 bytenr); |
d397712b CM |
2639 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2640 | struct btrfs_fs_info *info, | |
2641 | u64 bytenr); | |
758f2dfc | 2642 | void btrfs_get_block_group(struct btrfs_block_group_cache *cache); |
5d4f98a2 | 2643 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
4d75f8a9 | 2644 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
310712b2 OS |
2645 | struct btrfs_root *root, |
2646 | u64 parent, u64 root_objectid, | |
2647 | const struct btrfs_disk_key *key, | |
2648 | int level, u64 hint, | |
2649 | u64 empty_size); | |
f0486c68 YZ |
2650 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2651 | struct btrfs_root *root, | |
2652 | struct extent_buffer *buf, | |
5581a51a | 2653 | u64 parent, int last_ref); |
5d4f98a2 | 2654 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2655 | struct btrfs_root *root, u64 owner, |
5846a3c2 QW |
2656 | u64 offset, u64 ram_bytes, |
2657 | struct btrfs_key *ins); | |
5d4f98a2 | 2658 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2659 | u64 root_objectid, u64 owner, u64 offset, |
2660 | struct btrfs_key *ins); | |
18513091 | 2661 | int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, |
00361589 | 2662 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
e570fd27 | 2663 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2664 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2665 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2666 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2667 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2668 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2ff7e61e | 2669 | struct btrfs_fs_info *fs_info, |
5d4f98a2 | 2670 | u64 bytenr, u64 num_bytes, u64 flags, |
b1c79e09 | 2671 | int level, int is_data); |
31840ae1 | 2672 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2673 | struct btrfs_root *root, |
66d7e7f0 | 2674 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
b06c4bf5 | 2675 | u64 owner, u64 offset); |
5d4f98a2 | 2676 | |
2ff7e61e JM |
2677 | int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info, |
2678 | u64 start, u64 len, int delalloc); | |
2679 | int btrfs_free_and_pin_reserved_extent(struct btrfs_fs_info *fs_info, | |
e688b725 | 2680 | u64 start, u64 len); |
8b74c03e | 2681 | void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info); |
5ead2dd0 | 2682 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans); |
b18c6685 | 2683 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2684 | struct btrfs_root *root, |
31840ae1 | 2685 | u64 bytenr, u64 num_bytes, u64 parent, |
b06c4bf5 | 2686 | u64 root_objectid, u64 owner, u64 offset); |
5d4f98a2 | 2687 | |
21217054 | 2688 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans); |
9078a3e1 | 2689 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2ff7e61e | 2690 | struct btrfs_fs_info *fs_info); |
dcdf7f6d | 2691 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
2ff7e61e JM |
2692 | struct btrfs_fs_info *fs_info); |
2693 | int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr); | |
9078a3e1 | 2694 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
5b4aacef | 2695 | int btrfs_read_block_groups(struct btrfs_fs_info *info); |
6bccf3ab | 2696 | int btrfs_can_relocate(struct btrfs_fs_info *fs_info, u64 bytenr); |
0b86a832 | 2697 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
e7e02096 NB |
2698 | u64 bytes_used, u64 type, u64 chunk_offset, |
2699 | u64 size); | |
75cb379d | 2700 | void btrfs_add_raid_kobjects(struct btrfs_fs_info *fs_info); |
8eab77ff | 2701 | struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( |
7fd01182 FM |
2702 | struct btrfs_fs_info *fs_info, |
2703 | const u64 chunk_offset); | |
1a40e23b | 2704 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
5a98ec01 | 2705 | u64 group_start, struct extent_map *em); |
47ab2a6c | 2706 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
e33e17ee JM |
2707 | void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); |
2708 | void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); | |
6c686b35 | 2709 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans); |
1b86826d JM |
2710 | u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info); |
2711 | u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info); | |
2712 | u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info); | |
4184ea7f | 2713 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
2714 | |
2715 | enum btrfs_reserve_flush_enum { | |
2716 | /* If we are in the transaction, we can't flush anything.*/ | |
2717 | BTRFS_RESERVE_NO_FLUSH, | |
2718 | /* | |
2719 | * Flushing delalloc may cause deadlock somewhere, in this | |
2720 | * case, use FLUSH LIMIT | |
2721 | */ | |
2722 | BTRFS_RESERVE_FLUSH_LIMIT, | |
2723 | BTRFS_RESERVE_FLUSH_ALL, | |
2724 | }; | |
2725 | ||
f376df2b JB |
2726 | enum btrfs_flush_state { |
2727 | FLUSH_DELAYED_ITEMS_NR = 1, | |
2728 | FLUSH_DELAYED_ITEMS = 2, | |
2729 | FLUSH_DELALLOC = 3, | |
2730 | FLUSH_DELALLOC_WAIT = 4, | |
2731 | ALLOC_CHUNK = 5, | |
2732 | COMMIT_TRANS = 6, | |
2733 | }; | |
2734 | ||
04f4f916 | 2735 | int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes); |
364ecf36 QW |
2736 | int btrfs_check_data_free_space(struct inode *inode, |
2737 | struct extent_changeset **reserved, u64 start, u64 len); | |
bc42bda2 QW |
2738 | void btrfs_free_reserved_data_space(struct inode *inode, |
2739 | struct extent_changeset *reserved, u64 start, u64 len); | |
2740 | void btrfs_delalloc_release_space(struct inode *inode, | |
43b18595 QW |
2741 | struct extent_changeset *reserved, |
2742 | u64 start, u64 len, bool qgroup_free); | |
51773bec QW |
2743 | void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, |
2744 | u64 len); | |
4fbcdf66 | 2745 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
d5c12070 MX |
2746 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2747 | struct btrfs_block_rsv *rsv, | |
c4c129db | 2748 | int nitems, bool use_global_rsv); |
2ff7e61e | 2749 | void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info, |
7775c818 | 2750 | struct btrfs_block_rsv *rsv); |
43b18595 QW |
2751 | void btrfs_delalloc_release_extents(struct btrfs_inode *inode, u64 num_bytes, |
2752 | bool qgroup_free); | |
8b62f87b | 2753 | |
9f3db423 | 2754 | int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes); |
43b18595 QW |
2755 | void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes, |
2756 | bool qgroup_free); | |
364ecf36 QW |
2757 | int btrfs_delalloc_reserve_space(struct inode *inode, |
2758 | struct extent_changeset **reserved, u64 start, u64 len); | |
66d8f3dd | 2759 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
2ff7e61e | 2760 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info, |
66d8f3dd | 2761 | unsigned short type); |
69fe2d75 JB |
2762 | void btrfs_init_metadata_block_rsv(struct btrfs_fs_info *fs_info, |
2763 | struct btrfs_block_rsv *rsv, | |
2764 | unsigned short type); | |
2ff7e61e | 2765 | void btrfs_free_block_rsv(struct btrfs_fs_info *fs_info, |
f0486c68 | 2766 | struct btrfs_block_rsv *rsv); |
cdfb080e | 2767 | void __btrfs_free_block_rsv(struct btrfs_block_rsv *rsv); |
4a92b1b8 | 2768 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
2769 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
2770 | enum btrfs_reserve_flush_enum flush); | |
2ff7e61e | 2771 | int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_factor); |
36ba022a | 2772 | int btrfs_block_rsv_refill(struct btrfs_root *root, |
08e007d2 MX |
2773 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
2774 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 | 2775 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
25d609f8 JB |
2776 | struct btrfs_block_rsv *dst_rsv, u64 num_bytes, |
2777 | int update_size); | |
d52be818 JB |
2778 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
2779 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
2780 | int min_factor); | |
2ff7e61e | 2781 | void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info, |
f0486c68 YZ |
2782 | struct btrfs_block_rsv *block_rsv, |
2783 | u64 num_bytes); | |
c83488af | 2784 | int btrfs_inc_block_group_ro(struct btrfs_block_group_cache *cache); |
2ff7e61e | 2785 | void btrfs_dec_block_group_ro(struct btrfs_block_group_cache *cache); |
0af3d00b | 2786 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2787 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
2ff7e61e | 2788 | int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, |
acce952b | 2789 | u64 start, u64 end); |
2ff7e61e | 2790 | int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, |
1edb647b | 2791 | u64 num_bytes, u64 *actual_bytes); |
43a7e99d | 2792 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, u64 type); |
2ff7e61e | 2793 | int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range); |
acce952b | 2794 | |
c59021f8 | 2795 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2796 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2797 | struct btrfs_fs_info *fs_info); | |
ea14b57f DS |
2798 | int btrfs_start_write_no_snapshotting(struct btrfs_root *root); |
2799 | void btrfs_end_write_no_snapshotting(struct btrfs_root *root); | |
0bc19f90 | 2800 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
451a2c13 | 2801 | void check_system_chunk(struct btrfs_trans_handle *trans, const u64 type); |
a5ed9182 | 2802 | u64 add_new_free_space(struct btrfs_block_group_cache *block_group, |
4457c1c7 | 2803 | u64 start, u64 end); |
a5ed9182 | 2804 | |
dee26a9f | 2805 | /* ctree.c */ |
310712b2 | 2806 | int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key, |
5d4f98a2 | 2807 | int level, int *slot); |
310712b2 | 2808 | int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2); |
0b86a832 CM |
2809 | int btrfs_previous_item(struct btrfs_root *root, |
2810 | struct btrfs_path *path, u64 min_objectid, | |
2811 | int type); | |
ade2e0b3 WS |
2812 | int btrfs_previous_extent_item(struct btrfs_root *root, |
2813 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
2814 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
2815 | struct btrfs_path *path, | |
310712b2 | 2816 | const struct btrfs_key *new_key); |
925baedd CM |
2817 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2818 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
84f7d8e6 | 2819 | struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root); |
e7a84565 | 2820 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 2821 | struct btrfs_key *key, int lowest_level, |
de78b51a | 2822 | u64 min_trans); |
3f157a2f | 2823 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 2824 | struct btrfs_path *path, |
3f157a2f | 2825 | u64 min_trans); |
7069830a AB |
2826 | enum btrfs_compare_tree_result { |
2827 | BTRFS_COMPARE_TREE_NEW, | |
2828 | BTRFS_COMPARE_TREE_DELETED, | |
2829 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 2830 | BTRFS_COMPARE_TREE_SAME, |
7069830a | 2831 | }; |
ee8c494f | 2832 | typedef int (*btrfs_changed_cb_t)(struct btrfs_path *left_path, |
7069830a AB |
2833 | struct btrfs_path *right_path, |
2834 | struct btrfs_key *key, | |
2835 | enum btrfs_compare_tree_result result, | |
2836 | void *ctx); | |
2837 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
2838 | struct btrfs_root *right_root, | |
2839 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
2840 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2841 | struct btrfs_root *root, struct extent_buffer *buf, | |
2842 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2843 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2844 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2845 | struct btrfs_root *root, | |
2846 | struct extent_buffer *buf, | |
2847 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2848 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2849 | struct extent_buffer *buf); | |
2ff7e61e | 2850 | void btrfs_extend_item(struct btrfs_fs_info *fs_info, struct btrfs_path *path, |
143bede5 | 2851 | u32 data_size); |
2ff7e61e JM |
2852 | void btrfs_truncate_item(struct btrfs_fs_info *fs_info, |
2853 | struct btrfs_path *path, u32 new_size, int from_end); | |
459931ec CM |
2854 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2855 | struct btrfs_root *root, | |
2856 | struct btrfs_path *path, | |
310712b2 | 2857 | const struct btrfs_key *new_key, |
459931ec | 2858 | unsigned long split_offset); |
ad48fd75 YZ |
2859 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2860 | struct btrfs_root *root, | |
2861 | struct btrfs_path *path, | |
310712b2 | 2862 | const struct btrfs_key *new_key); |
e33d5c3d KN |
2863 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
2864 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
310712b2 OS |
2865 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2866 | const struct btrfs_key *key, struct btrfs_path *p, | |
2867 | int ins_len, int cow); | |
2868 | int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key, | |
5d9e75c4 | 2869 | struct btrfs_path *p, u64 time_seq); |
2f38b3e1 | 2870 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
310712b2 OS |
2871 | const struct btrfs_key *key, |
2872 | struct btrfs_path *p, int find_higher, | |
2873 | int return_any); | |
6702ed49 | 2874 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2875 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 2876 | int start_slot, u64 *last_ret, |
a6b6e75e | 2877 | struct btrfs_key *progress); |
b3b4aa74 | 2878 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2879 | struct btrfs_path *btrfs_alloc_path(void); |
2880 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2881 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 2882 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 2883 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
2884 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2885 | ||
85e21bac CM |
2886 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2887 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2888 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2889 | struct btrfs_root *root, | |
2890 | struct btrfs_path *path) | |
2891 | { | |
2892 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2893 | } | |
2894 | ||
afe5fea7 | 2895 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
310712b2 | 2896 | const struct btrfs_key *cpu_key, u32 *data_size, |
143bede5 | 2897 | u32 total_data, u32 total_size, int nr); |
310712b2 OS |
2898 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2899 | const struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2900 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2901 | struct btrfs_root *root, | |
2902 | struct btrfs_path *path, | |
310712b2 OS |
2903 | const struct btrfs_key *cpu_key, u32 *data_size, |
2904 | int nr); | |
9c58309d CM |
2905 | |
2906 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2907 | struct btrfs_root *root, | |
2908 | struct btrfs_path *path, | |
310712b2 | 2909 | const struct btrfs_key *key, |
9c58309d CM |
2910 | u32 data_size) |
2911 | { | |
2912 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2913 | } | |
2914 | ||
234b63a0 | 2915 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 2916 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2917 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2918 | u64 time_seq); | |
1c8f52a5 AB |
2919 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2920 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2921 | { |
2922 | ++p->slots[0]; | |
2923 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2924 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2925 | return 0; |
2926 | } | |
1c8f52a5 AB |
2927 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2928 | { | |
2929 | return btrfs_next_old_item(root, p, 0); | |
2930 | } | |
2ff7e61e JM |
2931 | int btrfs_leaf_free_space(struct btrfs_fs_info *fs_info, |
2932 | struct extent_buffer *leaf); | |
2c536799 JM |
2933 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
2934 | struct btrfs_block_rsv *block_rsv, | |
2935 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
2936 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2937 | struct btrfs_root *root, | |
2938 | struct extent_buffer *node, | |
2939 | struct extent_buffer *parent); | |
7841cb28 DS |
2940 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2941 | { | |
2942 | /* | |
afcdd129 | 2943 | * Do it this way so we only ever do one test_bit in the normal case. |
7841cb28 | 2944 | */ |
afcdd129 JB |
2945 | if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) { |
2946 | if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags)) | |
2947 | return 2; | |
2948 | return 1; | |
2949 | } | |
2950 | return 0; | |
7841cb28 | 2951 | } |
babbf170 MX |
2952 | |
2953 | /* | |
2954 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
2955 | * anything except sleeping. This function is used to check the status of | |
2956 | * the fs. | |
2957 | */ | |
2ff7e61e | 2958 | static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info) |
babbf170 | 2959 | { |
1751e8a6 | 2960 | return fs_info->sb->s_flags & SB_RDONLY || btrfs_fs_closing(fs_info); |
babbf170 MX |
2961 | } |
2962 | ||
6c41761f DS |
2963 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
2964 | { | |
837d5b6e | 2965 | kfree(fs_info->balance_ctl); |
6c41761f DS |
2966 | kfree(fs_info->delayed_root); |
2967 | kfree(fs_info->extent_root); | |
2968 | kfree(fs_info->tree_root); | |
2969 | kfree(fs_info->chunk_root); | |
2970 | kfree(fs_info->dev_root); | |
2971 | kfree(fs_info->csum_root); | |
bcef60f2 | 2972 | kfree(fs_info->quota_root); |
d8f98039 | 2973 | kfree(fs_info->uuid_root); |
70f6d82e | 2974 | kfree(fs_info->free_space_root); |
6c41761f DS |
2975 | kfree(fs_info->super_copy); |
2976 | kfree(fs_info->super_for_commit); | |
f667aef6 | 2977 | security_free_mnt_opts(&fs_info->security_opts); |
a8fd1f71 | 2978 | kvfree(fs_info); |
6c41761f | 2979 | } |
7841cb28 | 2980 | |
097b8a7c JS |
2981 | /* tree mod log functions from ctree.c */ |
2982 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2983 | struct seq_list *elem); | |
2984 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2985 | struct seq_list *elem); | |
5b6602e7 | 2986 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 2987 | |
dee26a9f | 2988 | /* root-item.c */ |
0660b5af | 2989 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
6bccf3ab | 2990 | struct btrfs_fs_info *fs_info, |
4df27c4d YZ |
2991 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2992 | const char *name, int name_len); | |
2993 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
6bccf3ab | 2994 | struct btrfs_fs_info *fs_info, |
4df27c4d | 2995 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, |
0660b5af | 2996 | const char *name, int name_len); |
1cd5447e JM |
2997 | int btrfs_del_root(struct btrfs_trans_handle *trans, |
2998 | struct btrfs_fs_info *fs_info, const struct btrfs_key *key); | |
310712b2 OS |
2999 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3000 | const struct btrfs_key *key, | |
3001 | struct btrfs_root_item *item); | |
b45a9d8b JM |
3002 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
3003 | struct btrfs_root *root, | |
3004 | struct btrfs_key *key, | |
3005 | struct btrfs_root_item *item); | |
310712b2 | 3006 | int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key, |
cb517eab MX |
3007 | struct btrfs_path *path, struct btrfs_root_item *root_item, |
3008 | struct btrfs_key *root_key); | |
6bccf3ab | 3009 | int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info); |
bf5f32ec MF |
3010 | void btrfs_set_root_node(struct btrfs_root_item *item, |
3011 | struct extent_buffer *node); | |
08fe4db1 | 3012 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
3013 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
3014 | struct btrfs_root *root); | |
08fe4db1 | 3015 | |
07b30a49 | 3016 | /* uuid-tree.c */ |
cdb345a8 | 3017 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 3018 | u64 subid); |
d1957791 | 3019 | int btrfs_uuid_tree_remove(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 3020 | u64 subid); |
70f80175 SB |
3021 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
3022 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
3023 | u64)); | |
07b30a49 | 3024 | |
dee26a9f | 3025 | /* dir-item.c */ |
9c52057c CM |
3026 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
3027 | const char *name, int name_len); | |
d397712b CM |
3028 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
3029 | struct btrfs_root *root, const char *name, | |
8e7611cf | 3030 | int name_len, struct btrfs_inode *dir, |
aec7477b | 3031 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3032 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3033 | struct btrfs_root *root, | |
3034 | struct btrfs_path *path, u64 dir, | |
3035 | const char *name, int name_len, | |
3036 | int mod); | |
3037 | struct btrfs_dir_item * | |
3038 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3039 | struct btrfs_root *root, | |
3040 | struct btrfs_path *path, u64 dir, | |
3041 | u64 objectid, const char *name, int name_len, | |
3042 | int mod); | |
4df27c4d YZ |
3043 | struct btrfs_dir_item * |
3044 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3045 | struct btrfs_path *path, u64 dirid, | |
3046 | const char *name, int name_len); | |
7e38180e CM |
3047 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3048 | struct btrfs_root *root, | |
3049 | struct btrfs_path *path, | |
3050 | struct btrfs_dir_item *di); | |
5103e947 | 3051 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3052 | struct btrfs_root *root, |
3053 | struct btrfs_path *path, u64 objectid, | |
3054 | const char *name, u16 name_len, | |
3055 | const void *data, u16 data_len); | |
5103e947 JB |
3056 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3057 | struct btrfs_root *root, | |
3058 | struct btrfs_path *path, u64 dir, | |
3059 | const char *name, u16 name_len, | |
3060 | int mod); | |
2ff7e61e | 3061 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info, |
5f5bc6b1 FM |
3062 | struct btrfs_path *path, |
3063 | const char *name, | |
3064 | int name_len); | |
7b128766 JB |
3065 | |
3066 | /* orphan.c */ | |
3067 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3068 | struct btrfs_root *root, u64 offset); | |
3069 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3070 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3071 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3072 | |
dee26a9f | 3073 | /* inode-item.c */ |
3954401f CM |
3074 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3075 | struct btrfs_root *root, | |
3076 | const char *name, int name_len, | |
aec7477b | 3077 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3078 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3079 | struct btrfs_root *root, | |
3080 | const char *name, int name_len, | |
aec7477b | 3081 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
3082 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3083 | struct btrfs_root *root, | |
3084 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3085 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3086 | *root, struct btrfs_path *path, |
3087 | struct btrfs_key *location, int mod); | |
dee26a9f | 3088 | |
f186373f MF |
3089 | struct btrfs_inode_extref * |
3090 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3091 | struct btrfs_root *root, | |
3092 | struct btrfs_path *path, | |
3093 | const char *name, int name_len, | |
3094 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3095 | int cow); | |
3096 | ||
1f250e92 FM |
3097 | int btrfs_find_name_in_backref(struct extent_buffer *leaf, int slot, |
3098 | const char *name, | |
3099 | int name_len, struct btrfs_inode_ref **ref_ret); | |
3100 | int btrfs_find_name_in_ext_backref(struct extent_buffer *leaf, int slot, | |
f186373f MF |
3101 | u64 ref_objectid, const char *name, |
3102 | int name_len, | |
3103 | struct btrfs_inode_extref **extref_ret); | |
3104 | ||
dee26a9f | 3105 | /* file-item.c */ |
facc8a22 | 3106 | struct btrfs_dio_private; |
459931ec | 3107 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
5b4aacef | 3108 | struct btrfs_fs_info *fs_info, u64 bytenr, u64 len); |
4e4cbee9 CH |
3109 | blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u32 *dst); |
3110 | blk_status_t btrfs_lookup_bio_sums_dio(struct inode *inode, struct bio *bio, | |
2ff7e61e | 3111 | u64 logical_offset); |
b18c6685 | 3112 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3113 | struct btrfs_root *root, |
3114 | u64 objectid, u64 pos, | |
3115 | u64 disk_offset, u64 disk_num_bytes, | |
3116 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3117 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3118 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3119 | struct btrfs_root *root, | |
3120 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3121 | u64 bytenr, int mod); |
065631f6 | 3122 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3123 | struct btrfs_root *root, |
e6dcd2dc | 3124 | struct btrfs_ordered_sum *sums); |
4e4cbee9 | 3125 | blk_status_t btrfs_csum_one_bio(struct inode *inode, struct bio *bio, |
2ff7e61e | 3126 | u64 file_start, int contig); |
a2de733c AJ |
3127 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3128 | struct list_head *list, int search_commit); | |
9cdc5124 | 3129 | void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode, |
7ffbb598 FM |
3130 | const struct btrfs_path *path, |
3131 | struct btrfs_file_extent_item *fi, | |
3132 | const bool new_inline, | |
3133 | struct extent_map *em); | |
3134 | ||
39279cc3 | 3135 | /* inode.c */ |
fc4f21b1 NB |
3136 | struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, |
3137 | struct page *page, size_t pg_offset, u64 start, | |
3138 | u64 len, int create); | |
00361589 | 3139 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3140 | u64 *orig_start, u64 *orig_block_len, |
3141 | u64 *ram_bytes); | |
4881ee5a | 3142 | |
2b877331 NB |
3143 | void __btrfs_del_delalloc_inode(struct btrfs_root *root, |
3144 | struct btrfs_inode *inode); | |
3de4586c | 3145 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
70ddc553 | 3146 | int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index); |
e02119d5 CM |
3147 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3148 | struct btrfs_root *root, | |
4ec5934e | 3149 | struct btrfs_inode *dir, struct btrfs_inode *inode, |
e02119d5 CM |
3150 | const char *name, int name_len); |
3151 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
db0a669f | 3152 | struct btrfs_inode *parent_inode, struct btrfs_inode *inode, |
e02119d5 | 3153 | const char *name, int name_len, int add_backref, u64 index); |
f60a2364 | 3154 | int btrfs_delete_subvolume(struct inode *dir, struct dentry *dentry); |
9703fefe | 3155 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
2aaa6655 | 3156 | int front); |
e02119d5 CM |
3157 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3158 | struct btrfs_root *root, | |
3159 | struct inode *inode, u64 new_size, | |
3160 | u32 min_type); | |
3161 | ||
76f32e24 | 3162 | int btrfs_start_delalloc_inodes(struct btrfs_root *root); |
82b3e53b | 3163 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int nr); |
2ac55d41 | 3164 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
e3b8a485 | 3165 | unsigned int extra_bits, |
ba8b04c1 | 3166 | struct extent_state **cached_state, int dedupe); |
d2fb3437 | 3167 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3168 | struct btrfs_root *new_root, |
3169 | struct btrfs_root *parent_root, | |
3170 | u64 new_dirid); | |
81a75f67 | 3171 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
64a16701 DW |
3172 | size_t size, struct bio *bio, |
3173 | unsigned long bio_flags); | |
c6100a4b | 3174 | void btrfs_set_range_writeback(void *private_data, u64 start, u64 end); |
a528a241 | 3175 | vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf); |
9ebefb18 | 3176 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3177 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3178 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3179 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3180 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3181 | int btrfs_drop_inode(struct inode *inode); |
f5c29bd9 | 3182 | int __init btrfs_init_cachep(void); |
e67c718b | 3183 | void __cold btrfs_destroy_cachep(void); |
1a54ef8c | 3184 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3185 | struct btrfs_root *root, int *was_new); |
fc4f21b1 NB |
3186 | struct extent_map *btrfs_get_extent(struct btrfs_inode *inode, |
3187 | struct page *page, size_t pg_offset, | |
3188 | u64 start, u64 end, int create); | |
a52d9a80 CM |
3189 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
3190 | struct btrfs_root *root, | |
3191 | struct inode *inode); | |
be6aef60 JB |
3192 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3193 | struct btrfs_root *root, struct inode *inode); | |
73f2e545 NB |
3194 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, |
3195 | struct btrfs_inode *inode); | |
66b4ffd1 | 3196 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
a41ad394 | 3197 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
24bbcf04 | 3198 | void btrfs_add_delayed_iput(struct inode *inode); |
2ff7e61e | 3199 | void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info); |
efa56464 YZ |
3200 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3201 | u64 start, u64 num_bytes, u64 min_size, | |
3202 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3203 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3204 | struct btrfs_trans_handle *trans, int mode, | |
3205 | u64 start, u64 num_bytes, u64 min_size, | |
3206 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 3207 | extern const struct dentry_operations btrfs_dentry_operations; |
6a3891c5 JB |
3208 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
3209 | void btrfs_test_inode_set_ops(struct inode *inode); | |
3210 | #endif | |
f46b5a66 CH |
3211 | |
3212 | /* ioctl.c */ | |
3213 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3214 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
d5131b65 | 3215 | int btrfs_ioctl_get_supported_features(void __user *arg); |
7b6a221e | 3216 | void btrfs_sync_inode_flags_to_i_flags(struct inode *inode); |
dd5f9615 | 3217 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3218 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3219 | struct btrfs_ioctl_defrag_range_args *range, | |
3220 | u64 newer_than, unsigned long max_pages); | |
008ef096 DS |
3221 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3222 | struct btrfs_ioctl_space_info *space); | |
3223 | void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info, | |
35a3621b | 3224 | struct btrfs_ioctl_balance_args *bargs); |
2b3909f8 DW |
3225 | ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen, |
3226 | struct file *dst_file, u64 dst_loff); | |
35a3621b | 3227 | |
39279cc3 | 3228 | /* file.c */ |
f5c29bd9 | 3229 | int __init btrfs_auto_defrag_init(void); |
e67c718b | 3230 | void __cold btrfs_auto_defrag_exit(void); |
4cb5300b | 3231 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
6158e1ce | 3232 | struct btrfs_inode *inode); |
4cb5300b | 3233 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
26176e7c | 3234 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3235 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
dcdbc059 | 3236 | void btrfs_drop_extent_cache(struct btrfs_inode *inode, u64 start, u64 end, |
7014cdb4 | 3237 | int skip_pinned); |
828c0950 | 3238 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3239 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3240 | struct btrfs_root *root, struct inode *inode, | |
3241 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3242 | u64 *drop_end, int drop_cache, |
3243 | int replace_extent, | |
3244 | u32 extent_item_size, | |
3245 | int *key_inserted); | |
5dc562c5 JB |
3246 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3247 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3248 | u64 end, int drop_cache); |
d899e052 | 3249 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
7a6d7067 | 3250 | struct btrfs_inode *inode, u64 start, u64 end); |
6bf13c0c | 3251 | int btrfs_release_file(struct inode *inode, struct file *file); |
2ff7e61e JM |
3252 | int btrfs_dirty_pages(struct inode *inode, struct page **pages, |
3253 | size_t num_pages, loff_t pos, size_t write_bytes, | |
be1a12a0 | 3254 | struct extent_state **cached); |
728404da | 3255 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
04b38d60 CH |
3256 | int btrfs_clone_file_range(struct file *file_in, loff_t pos_in, |
3257 | struct file *file_out, loff_t pos_out, u64 len); | |
6bf13c0c | 3258 | |
6702ed49 CM |
3259 | /* tree-defrag.c */ |
3260 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3261 | struct btrfs_root *root); |
58176a96 JB |
3262 | |
3263 | /* sysfs.c */ | |
f5c29bd9 | 3264 | int __init btrfs_init_sysfs(void); |
e67c718b | 3265 | void __cold btrfs_exit_sysfs(void); |
96f3136e | 3266 | int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info); |
6618a59b | 3267 | void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info); |
58176a96 | 3268 | |
edbd8d4e | 3269 | /* super.c */ |
2ff7e61e | 3270 | int btrfs_parse_options(struct btrfs_fs_info *info, char *options, |
96da0919 | 3271 | unsigned long new_flags); |
6bf13c0c | 3272 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 | 3273 | |
e67c718b | 3274 | static inline __printf(2, 3) __cold |
2fd57fcb AB |
3275 | void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
3276 | { | |
3277 | } | |
3278 | ||
533574c6 JP |
3279 | #ifdef CONFIG_PRINTK |
3280 | __printf(2, 3) | |
e67c718b | 3281 | __cold |
c2cf52eb | 3282 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 | 3283 | #else |
2fd57fcb AB |
3284 | #define btrfs_printk(fs_info, fmt, args...) \ |
3285 | btrfs_no_printk(fs_info, fmt, ##args) | |
533574c6 JP |
3286 | #endif |
3287 | ||
c2cf52eb SK |
3288 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3289 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3290 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3291 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3292 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3293 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3294 | #define btrfs_err(fs_info, fmt, args...) \ | |
3295 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3296 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3297 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3298 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3299 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3300 | #define btrfs_info(fs_info, fmt, args...) \ | |
3301 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3302 | |
08a84e25 DS |
3303 | /* |
3304 | * Wrappers that use printk_in_rcu | |
3305 | */ | |
3306 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3307 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3308 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3309 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3310 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3311 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3312 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3313 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3314 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3315 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3316 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3317 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3318 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3319 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3320 | ||
24aa6b41 DS |
3321 | /* |
3322 | * Wrappers that use a ratelimited printk_in_rcu | |
3323 | */ | |
3324 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3325 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3326 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3327 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3328 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3329 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3330 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3331 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3332 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3333 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3334 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3335 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3336 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3337 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3338 | ||
1dd6d7ca DS |
3339 | /* |
3340 | * Wrappers that use a ratelimited printk | |
3341 | */ | |
3342 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3343 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3344 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3345 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3346 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3347 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3348 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3349 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3350 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3351 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3352 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3353 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3354 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3355 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
897a41b1 JM |
3356 | |
3357 | #if defined(CONFIG_DYNAMIC_DEBUG) | |
3358 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3359 | do { \ | |
3360 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3361 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3362 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args); \ | |
3363 | } while (0) | |
3364 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ | |
3365 | do { \ | |
3366 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3367 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3368 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args); \ | |
3369 | } while (0) | |
3370 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ | |
3371 | do { \ | |
3372 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3373 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3374 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, \ | |
3375 | ##args);\ | |
3376 | } while (0) | |
3377 | #define btrfs_debug_rl(fs_info, fmt, args...) \ | |
3378 | do { \ | |
3379 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3380 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3381 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, \ | |
3382 | ##args); \ | |
3383 | } while (0) | |
3384 | #elif defined(DEBUG) | |
c2cf52eb SK |
3385 | #define btrfs_debug(fs_info, fmt, args...) \ |
3386 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3387 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3388 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3389 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3390 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3391 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3392 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3393 | #else |
3394 | #define btrfs_debug(fs_info, fmt, args...) \ | |
c01f5f96 | 3395 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
08a84e25 | 3396 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
c01f5f96 | 3397 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
24aa6b41 | 3398 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
c01f5f96 | 3399 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
1dd6d7ca | 3400 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
c01f5f96 | 3401 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
27a0dd61 | 3402 | #endif |
c2cf52eb | 3403 | |
08a84e25 DS |
3404 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3405 | do { \ | |
3406 | rcu_read_lock(); \ | |
3407 | btrfs_printk(fs_info, fmt, ##args); \ | |
3408 | rcu_read_unlock(); \ | |
3409 | } while (0) | |
3410 | ||
24aa6b41 DS |
3411 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3412 | do { \ | |
3413 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3414 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3415 | DEFAULT_RATELIMIT_BURST); \ | |
3416 | if (__ratelimit(&_rs)) \ | |
3417 | btrfs_printk(fs_info, fmt, ##args); \ | |
3418 | } while (0) | |
3419 | ||
3420 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3421 | do { \ | |
3422 | rcu_read_lock(); \ | |
3423 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3424 | rcu_read_unlock(); \ | |
3425 | } while (0) | |
3426 | ||
2e17c7c6 JB |
3427 | #ifdef CONFIG_BTRFS_ASSERT |
3428 | ||
c0d19e2b | 3429 | __cold |
2e17c7c6 JB |
3430 | static inline void assfail(char *expr, char *file, int line) |
3431 | { | |
ab8d0fc4 | 3432 | pr_err("assertion failed: %s, file: %s, line: %d\n", |
2e17c7c6 JB |
3433 | expr, file, line); |
3434 | BUG(); | |
3435 | } | |
3436 | ||
3437 | #define ASSERT(expr) \ | |
3438 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3439 | #else | |
3440 | #define ASSERT(expr) ((void)0) | |
3441 | #endif | |
3442 | ||
ba3c2b19 NB |
3443 | __cold |
3444 | static inline void btrfs_print_v0_err(struct btrfs_fs_info *fs_info) | |
3445 | { | |
3446 | btrfs_err(fs_info, | |
3447 | "Unsupported V0 extent filesystem detected. Aborting. Please re-create your filesystem with a newer kernel"); | |
3448 | } | |
3449 | ||
533574c6 | 3450 | __printf(5, 6) |
c0d19e2b | 3451 | __cold |
34d97007 | 3452 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3453 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3454 | |
e33e17ee | 3455 | const char *btrfs_decode_error(int errno); |
533574c6 | 3456 | |
c0d19e2b | 3457 | __cold |
49b25e05 | 3458 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
66642832 | 3459 | const char *function, |
49b25e05 JM |
3460 | unsigned int line, int errno); |
3461 | ||
c5f4ccb2 AJ |
3462 | /* |
3463 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3464 | * detected, that way the exact line number is reported. | |
3465 | */ | |
66642832 | 3466 | #define btrfs_abort_transaction(trans, errno) \ |
c5f4ccb2 AJ |
3467 | do { \ |
3468 | /* Report first abort since mount */ \ | |
3469 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
66642832 | 3470 | &((trans)->fs_info->fs_state))) { \ |
e5d6b12f CM |
3471 | if ((errno) != -EIO) { \ |
3472 | WARN(1, KERN_DEBUG \ | |
3473 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3474 | (errno)); \ | |
3475 | } else { \ | |
71367b3f JM |
3476 | btrfs_debug((trans)->fs_info, \ |
3477 | "Transaction aborted (error %d)", \ | |
e5d6b12f CM |
3478 | (errno)); \ |
3479 | } \ | |
c5f4ccb2 | 3480 | } \ |
66642832 | 3481 | __btrfs_abort_transaction((trans), __func__, \ |
c5f4ccb2 AJ |
3482 | __LINE__, (errno)); \ |
3483 | } while (0) | |
3484 | ||
3485 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3486 | do { \ | |
3487 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3488 | (errno), fmt, ##args); \ | |
3489 | } while (0) | |
3490 | ||
3491 | __printf(5, 6) | |
3492 | __cold | |
3493 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3494 | unsigned int line, int errno, const char *fmt, ...); | |
3495 | /* | |
3496 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3497 | * will panic(). Otherwise we BUG() here. | |
3498 | */ | |
3499 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3500 | do { \ | |
3501 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3502 | BUG(); \ | |
3503 | } while (0) | |
3504 | ||
3505 | ||
3506 | /* compatibility and incompatibility defines */ | |
3507 | ||
2b0ce2c2 MH |
3508 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3509 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3510 | ||
3511 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3512 | u64 flag) | |
3513 | { | |
3514 | struct btrfs_super_block *disk_super; | |
3515 | u64 features; | |
3516 | ||
3517 | disk_super = fs_info->super_copy; | |
3518 | features = btrfs_super_incompat_flags(disk_super); | |
3519 | if (!(features & flag)) { | |
ceda0864 MX |
3520 | spin_lock(&fs_info->super_lock); |
3521 | features = btrfs_super_incompat_flags(disk_super); | |
3522 | if (!(features & flag)) { | |
3523 | features |= flag; | |
3524 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3525 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3526 | flag); |
3527 | } | |
3528 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3529 | } |
3530 | } | |
3531 | ||
1abfbcdf OS |
3532 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
3533 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3534 | ||
3535 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
3536 | u64 flag) | |
3537 | { | |
3538 | struct btrfs_super_block *disk_super; | |
3539 | u64 features; | |
3540 | ||
3541 | disk_super = fs_info->super_copy; | |
3542 | features = btrfs_super_incompat_flags(disk_super); | |
3543 | if (features & flag) { | |
3544 | spin_lock(&fs_info->super_lock); | |
3545 | features = btrfs_super_incompat_flags(disk_super); | |
3546 | if (features & flag) { | |
3547 | features &= ~flag; | |
3548 | btrfs_set_super_incompat_flags(disk_super, features); | |
3549 | btrfs_info(fs_info, "clearing %llu feature flag", | |
3550 | flag); | |
3551 | } | |
3552 | spin_unlock(&fs_info->super_lock); | |
3553 | } | |
3554 | } | |
3555 | ||
3173a18f JB |
3556 | #define btrfs_fs_incompat(fs_info, opt) \ |
3557 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3558 | ||
9780c497 | 3559 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3560 | { |
3561 | struct btrfs_super_block *disk_super; | |
3562 | disk_super = fs_info->super_copy; | |
3563 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3564 | } | |
3565 | ||
1abfbcdf OS |
3566 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
3567 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3568 | ||
3569 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3570 | u64 flag) | |
3571 | { | |
3572 | struct btrfs_super_block *disk_super; | |
3573 | u64 features; | |
3574 | ||
3575 | disk_super = fs_info->super_copy; | |
3576 | features = btrfs_super_compat_ro_flags(disk_super); | |
3577 | if (!(features & flag)) { | |
3578 | spin_lock(&fs_info->super_lock); | |
3579 | features = btrfs_super_compat_ro_flags(disk_super); | |
3580 | if (!(features & flag)) { | |
3581 | features |= flag; | |
3582 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3583 | btrfs_info(fs_info, "setting %llu ro feature flag", | |
3584 | flag); | |
3585 | } | |
3586 | spin_unlock(&fs_info->super_lock); | |
3587 | } | |
3588 | } | |
3589 | ||
3590 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
3591 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3592 | ||
3593 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3594 | u64 flag) | |
3595 | { | |
3596 | struct btrfs_super_block *disk_super; | |
3597 | u64 features; | |
3598 | ||
3599 | disk_super = fs_info->super_copy; | |
3600 | features = btrfs_super_compat_ro_flags(disk_super); | |
3601 | if (features & flag) { | |
3602 | spin_lock(&fs_info->super_lock); | |
3603 | features = btrfs_super_compat_ro_flags(disk_super); | |
3604 | if (features & flag) { | |
3605 | features &= ~flag; | |
3606 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3607 | btrfs_info(fs_info, "clearing %llu ro feature flag", | |
3608 | flag); | |
3609 | } | |
3610 | spin_unlock(&fs_info->super_lock); | |
3611 | } | |
3612 | } | |
3613 | ||
3614 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3615 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3616 | ||
3617 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3618 | { | |
3619 | struct btrfs_super_block *disk_super; | |
3620 | disk_super = fs_info->super_copy; | |
3621 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3622 | } | |
3623 | ||
33268eaf | 3624 | /* acl.c */ |
0eda294d | 3625 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3626 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3627 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3628 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3629 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3630 | #else |
ed8f3737 | 3631 | #define btrfs_get_acl NULL |
996a710d | 3632 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3633 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3634 | struct inode *inode, struct inode *dir) | |
3635 | { | |
3636 | return 0; | |
3637 | } | |
9b89d95a | 3638 | #endif |
0f9dd46c | 3639 | |
5d4f98a2 | 3640 | /* relocation.c */ |
6bccf3ab | 3641 | int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start); |
5d4f98a2 YZ |
3642 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
3643 | struct btrfs_root *root); | |
3644 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3645 | struct btrfs_root *root); | |
3646 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3647 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
3648 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3649 | struct btrfs_root *root, struct extent_buffer *buf, | |
3650 | struct extent_buffer *cow); | |
147d256e | 3651 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 3652 | u64 *bytes_to_reserve); |
49b25e05 | 3653 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3654 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3655 | |
3656 | /* scrub.c */ | |
aa1b8cd4 SB |
3657 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3658 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3659 | int readonly, int is_dev_replace); |
2ff7e61e JM |
3660 | void btrfs_scrub_pause(struct btrfs_fs_info *fs_info); |
3661 | void btrfs_scrub_continue(struct btrfs_fs_info *fs_info); | |
aa1b8cd4 SB |
3662 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
3663 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
3664 | struct btrfs_device *dev); | |
2ff7e61e | 3665 | int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid, |
a2de733c | 3666 | struct btrfs_scrub_progress *progress); |
0966a7b1 QW |
3667 | static inline void btrfs_init_full_stripe_locks_tree( |
3668 | struct btrfs_full_stripe_locks_tree *locks_root) | |
3669 | { | |
3670 | locks_root->root = RB_ROOT; | |
3671 | mutex_init(&locks_root->lock); | |
3672 | } | |
c404e0dc MX |
3673 | |
3674 | /* dev-replace.c */ | |
3675 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
3676 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
3677 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
3678 | ||
3679 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
3680 | { | |
3681 | btrfs_bio_counter_sub(fs_info, 1); | |
3682 | } | |
a2de733c | 3683 | |
7414a03f AJ |
3684 | /* reada.c */ |
3685 | struct reada_control { | |
c28f158e | 3686 | struct btrfs_fs_info *fs_info; /* tree to prefetch */ |
7414a03f AJ |
3687 | struct btrfs_key key_start; |
3688 | struct btrfs_key key_end; /* exclusive */ | |
3689 | atomic_t elems; | |
3690 | struct kref refcnt; | |
3691 | wait_queue_head_t wait; | |
3692 | }; | |
3693 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3694 | struct btrfs_key *start, struct btrfs_key *end); | |
3695 | int btrfs_reada_wait(void *handle); | |
3696 | void btrfs_reada_detach(void *handle); | |
d48d71aa | 3697 | int btree_readahead_hook(struct extent_buffer *eb, int err); |
7414a03f | 3698 | |
95a06077 JS |
3699 | static inline int is_fstree(u64 rootid) |
3700 | { | |
3701 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
3702 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
3703 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
3704 | return 1; |
3705 | return 0; | |
3706 | } | |
210549eb DS |
3707 | |
3708 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3709 | { | |
3710 | return signal_pending(current); | |
3711 | } | |
3712 | ||
aaedb55b JB |
3713 | /* Sanity test specific functions */ |
3714 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3715 | void btrfs_test_destroy_inode(struct inode *inode); | |
3716 | #endif | |
210549eb | 3717 | |
f5ee5c9a | 3718 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
fccb84c9 DS |
3719 | { |
3720 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
f5ee5c9a JM |
3721 | if (unlikely(test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, |
3722 | &fs_info->fs_state))) | |
fccb84c9 DS |
3723 | return 1; |
3724 | #endif | |
3725 | return 0; | |
3726 | } | |
9888c340 | 3727 | |
110a21fe DS |
3728 | static inline void cond_wake_up(struct wait_queue_head *wq) |
3729 | { | |
3730 | /* | |
3731 | * This implies a full smp_mb barrier, see comments for | |
3732 | * waitqueue_active why. | |
3733 | */ | |
3734 | if (wq_has_sleeper(wq)) | |
3735 | wake_up(wq); | |
3736 | } | |
3737 | ||
3738 | static inline void cond_wake_up_nomb(struct wait_queue_head *wq) | |
3739 | { | |
3740 | /* | |
3741 | * Special case for conditional wakeup where the barrier required for | |
3742 | * waitqueue_active is implied by some of the preceding code. Eg. one | |
3743 | * of such atomic operations (atomic_dec_and_return, ...), or a | |
3744 | * unlock/lock sequence, etc. | |
3745 | */ | |
3746 | if (waitqueue_active(wq)) | |
3747 | wake_up(wq); | |
3748 | } | |
3749 | ||
eb60ceac | 3750 | #endif |