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9888c340 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
6cbd5570 CM |
2 | /* |
3 | * Copyright (C) 2007 Oracle. All rights reserved. | |
6cbd5570 CM |
4 | */ |
5 | ||
9888c340 DS |
6 | #ifndef BTRFS_CTREE_H |
7 | #define BTRFS_CTREE_H | |
eb60ceac | 8 | |
810191ff | 9 | #include <linux/mm.h> |
174cd4b1 | 10 | #include <linux/sched/signal.h> |
810191ff | 11 | #include <linux/highmem.h> |
e20d96d6 | 12 | #include <linux/fs.h> |
a2de733c | 13 | #include <linux/rwsem.h> |
803b2f54 | 14 | #include <linux/semaphore.h> |
58176a96 | 15 | #include <linux/completion.h> |
04160088 | 16 | #include <linux/backing-dev.h> |
e6dcd2dc | 17 | #include <linux/wait.h> |
5a0e3ad6 | 18 | #include <linux/slab.h> |
f8b18087 | 19 | #include <linux/kobject.h> |
1abe9b8a | 20 | #include <trace/events/btrfs.h> |
479965d6 | 21 | #include <asm/kmap_types.h> |
3b16a4e3 | 22 | #include <linux/pagemap.h> |
55e301fd | 23 | #include <linux/btrfs.h> |
db671160 | 24 | #include <linux/btrfs_tree.h> |
21c7e756 | 25 | #include <linux/workqueue.h> |
f667aef6 | 26 | #include <linux/security.h> |
ee22184b | 27 | #include <linux/sizes.h> |
897a41b1 | 28 | #include <linux/dynamic_debug.h> |
1e4f4714 | 29 | #include <linux/refcount.h> |
9678c543 | 30 | #include <linux/crc32c.h> |
d1310b2e | 31 | #include "extent_io.h" |
5f39d397 | 32 | #include "extent_map.h" |
8b712842 | 33 | #include "async-thread.h" |
e20d96d6 | 34 | |
e089f05c | 35 | struct btrfs_trans_handle; |
79154b1b | 36 | struct btrfs_transaction; |
a22285a6 | 37 | struct btrfs_pending_snapshot; |
35b7e476 | 38 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
35b7e476 | 39 | extern struct kmem_cache *btrfs_bit_radix_cachep; |
2c90e5d6 | 40 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 41 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 42 | struct btrfs_ordered_sum; |
e089f05c | 43 | |
cdb4c574 | 44 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 45 | |
72d7aefc | 46 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 47 | |
4008c04a | 48 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 49 | |
7c829b72 AJ |
50 | #define BTRFS_OLDEST_GENERATION 0ULL |
51 | ||
727011e0 CM |
52 | /* |
53 | * the max metadata block size. This limit is somewhat artificial, | |
54 | * but the memmove costs go through the roof for larger blocks. | |
55 | */ | |
56 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
57 | ||
e20d96d6 CM |
58 | /* |
59 | * we can actually store much bigger names, but lets not confuse the rest | |
60 | * of linux | |
61 | */ | |
62 | #define BTRFS_NAME_LEN 255 | |
63 | ||
f186373f MF |
64 | /* |
65 | * Theoretical limit is larger, but we keep this down to a sane | |
66 | * value. That should limit greatly the possibility of collisions on | |
67 | * inode ref items. | |
68 | */ | |
69 | #define BTRFS_LINK_MAX 65535U | |
70 | ||
4408ea7c | 71 | /* four bytes for CRC32 */ |
4d4ab6d6 | 72 | static const int btrfs_csum_sizes[] = { 4 }; |
607d432d | 73 | |
3954401f | 74 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 75 | |
3d136a11 SB |
76 | /* ioprio of readahead is set to idle */ |
77 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
78 | ||
ee22184b | 79 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M |
e2d84521 | 80 | |
dec59fa3 EL |
81 | /* |
82 | * Use large batch size to reduce overhead of metadata updates. On the reader | |
83 | * side, we only read it when we are close to ENOSPC and the read overhead is | |
84 | * mostly related to the number of CPUs, so it is OK to use arbitrary large | |
85 | * value here. | |
86 | */ | |
87 | #define BTRFS_TOTAL_BYTES_PINNED_BATCH SZ_128M | |
88 | ||
ee22184b | 89 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M |
dcab6a3b | 90 | |
9678c543 | 91 | |
823bb20a DS |
92 | /* |
93 | * Count how many BTRFS_MAX_EXTENT_SIZE cover the @size | |
94 | */ | |
95 | static inline u32 count_max_extents(u64 size) | |
96 | { | |
97 | return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE); | |
98 | } | |
99 | ||
0b86a832 CM |
100 | struct btrfs_mapping_tree { |
101 | struct extent_map_tree map_tree; | |
102 | }; | |
103 | ||
0b86a832 CM |
104 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
105 | { | |
106 | BUG_ON(num_stripes == 0); | |
107 | return sizeof(struct btrfs_chunk) + | |
108 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
109 | } | |
110 | ||
acce952b | 111 | /* |
112 | * File system states | |
113 | */ | |
87533c47 | 114 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 115 | #define BTRFS_FS_STATE_REMOUNTING 1 |
08748810 | 116 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
c404e0dc | 117 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
7c0260ee | 118 | #define BTRFS_FS_STATE_DUMMY_FS_INFO 4 |
acce952b | 119 | |
5d4f98a2 YZ |
120 | #define BTRFS_BACKREF_REV_MAX 256 |
121 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
122 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
123 | BTRFS_BACKREF_REV_SHIFT) | |
124 | ||
125 | #define BTRFS_OLD_BACKREF_REV 0 | |
126 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 127 | |
fec577fb CM |
128 | /* |
129 | * every tree block (leaf or node) starts with this header. | |
130 | */ | |
bb492bb0 | 131 | struct btrfs_header { |
e17cade2 | 132 | /* these first four must match the super block */ |
f254e52c | 133 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 134 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 135 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 136 | __le64 flags; |
e17cade2 CM |
137 | |
138 | /* allowed to be different from the super from here on down */ | |
139 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 140 | __le64 generation; |
4d775673 | 141 | __le64 owner; |
5f39d397 | 142 | __le32 nritems; |
9a6f11ed | 143 | u8 level; |
eb60ceac CM |
144 | } __attribute__ ((__packed__)); |
145 | ||
0b86a832 CM |
146 | /* |
147 | * this is a very generous portion of the super block, giving us | |
148 | * room to translate 14 chunks with 3 stripes each. | |
149 | */ | |
150 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
151 | ||
af31f5e5 CM |
152 | /* |
153 | * just in case we somehow lose the roots and are not able to mount, | |
154 | * we store an array of the roots from previous transactions | |
155 | * in the super. | |
156 | */ | |
157 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
158 | struct btrfs_root_backup { | |
159 | __le64 tree_root; | |
160 | __le64 tree_root_gen; | |
161 | ||
162 | __le64 chunk_root; | |
163 | __le64 chunk_root_gen; | |
164 | ||
165 | __le64 extent_root; | |
166 | __le64 extent_root_gen; | |
167 | ||
168 | __le64 fs_root; | |
169 | __le64 fs_root_gen; | |
170 | ||
171 | __le64 dev_root; | |
172 | __le64 dev_root_gen; | |
173 | ||
174 | __le64 csum_root; | |
175 | __le64 csum_root_gen; | |
176 | ||
177 | __le64 total_bytes; | |
178 | __le64 bytes_used; | |
179 | __le64 num_devices; | |
180 | /* future */ | |
d1423248 | 181 | __le64 unused_64[4]; |
af31f5e5 CM |
182 | |
183 | u8 tree_root_level; | |
184 | u8 chunk_root_level; | |
185 | u8 extent_root_level; | |
186 | u8 fs_root_level; | |
187 | u8 dev_root_level; | |
188 | u8 csum_root_level; | |
189 | /* future and to align */ | |
190 | u8 unused_8[10]; | |
191 | } __attribute__ ((__packed__)); | |
192 | ||
fec577fb CM |
193 | /* |
194 | * the super block basically lists the main trees of the FS | |
195 | * it currently lacks any block count etc etc | |
196 | */ | |
234b63a0 | 197 | struct btrfs_super_block { |
f254e52c | 198 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 199 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 200 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 201 | __le64 bytenr; /* this block number */ |
63b10fc4 | 202 | __le64 flags; |
e17cade2 CM |
203 | |
204 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 205 | __le64 magic; |
3768f368 CM |
206 | __le64 generation; |
207 | __le64 root; | |
0b86a832 | 208 | __le64 chunk_root; |
e02119d5 | 209 | __le64 log_root; |
c3027eb5 CM |
210 | |
211 | /* this will help find the new super based on the log root */ | |
212 | __le64 log_root_transid; | |
db94535d CM |
213 | __le64 total_bytes; |
214 | __le64 bytes_used; | |
2e635a27 | 215 | __le64 root_dir_objectid; |
8a4b83cc | 216 | __le64 num_devices; |
5f39d397 CM |
217 | __le32 sectorsize; |
218 | __le32 nodesize; | |
707e8a07 | 219 | __le32 __unused_leafsize; |
87ee04eb | 220 | __le32 stripesize; |
0b86a832 | 221 | __le32 sys_chunk_array_size; |
84234f3a | 222 | __le64 chunk_root_generation; |
f2b636e8 JB |
223 | __le64 compat_flags; |
224 | __le64 compat_ro_flags; | |
225 | __le64 incompat_flags; | |
607d432d | 226 | __le16 csum_type; |
db94535d | 227 | u8 root_level; |
0b86a832 | 228 | u8 chunk_root_level; |
e02119d5 | 229 | u8 log_root_level; |
0d81ba5d | 230 | struct btrfs_dev_item dev_item; |
c3027eb5 | 231 | |
7ae9c09d | 232 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 233 | |
0af3d00b | 234 | __le64 cache_generation; |
26432799 | 235 | __le64 uuid_tree_generation; |
0af3d00b | 236 | |
c3027eb5 | 237 | /* future expansion */ |
26432799 | 238 | __le64 reserved[30]; |
0b86a832 | 239 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 240 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
241 | } __attribute__ ((__packed__)); |
242 | ||
f2b636e8 JB |
243 | /* |
244 | * Compat flags that we support. If any incompat flags are set other than the | |
245 | * ones specified below then we will fail to mount | |
246 | */ | |
5d4f98a2 | 247 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
248 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
249 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
70f6d82e OS |
250 | |
251 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ | |
6675df31 OS |
252 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \ |
253 | BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID) | |
70f6d82e | 254 | |
2eaa055f JM |
255 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
256 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
257 | ||
0af3d00b JB |
258 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
259 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 260 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 261 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 262 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 263 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
5c1aab1d | 264 | BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD | \ |
53b381b3 | 265 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 266 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f JB |
267 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
268 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) | |
f2b636e8 | 269 | |
2eaa055f JM |
270 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
271 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
272 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 273 | |
fec577fb | 274 | /* |
62e2749e | 275 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
276 | * the item in the leaf (relative to the start of the data area) |
277 | */ | |
0783fcfc | 278 | struct btrfs_item { |
e2fa7227 | 279 | struct btrfs_disk_key key; |
123abc88 | 280 | __le32 offset; |
5f39d397 | 281 | __le32 size; |
eb60ceac CM |
282 | } __attribute__ ((__packed__)); |
283 | ||
fec577fb CM |
284 | /* |
285 | * leaves have an item area and a data area: | |
286 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
287 | * | |
288 | * The data is separate from the items to get the keys closer together | |
289 | * during searches. | |
290 | */ | |
234b63a0 | 291 | struct btrfs_leaf { |
bb492bb0 | 292 | struct btrfs_header header; |
123abc88 | 293 | struct btrfs_item items[]; |
eb60ceac CM |
294 | } __attribute__ ((__packed__)); |
295 | ||
fec577fb CM |
296 | /* |
297 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
298 | * other blocks | |
299 | */ | |
123abc88 CM |
300 | struct btrfs_key_ptr { |
301 | struct btrfs_disk_key key; | |
302 | __le64 blockptr; | |
74493f7a | 303 | __le64 generation; |
123abc88 CM |
304 | } __attribute__ ((__packed__)); |
305 | ||
234b63a0 | 306 | struct btrfs_node { |
bb492bb0 | 307 | struct btrfs_header header; |
123abc88 | 308 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
309 | } __attribute__ ((__packed__)); |
310 | ||
fec577fb | 311 | /* |
234b63a0 CM |
312 | * btrfs_paths remember the path taken from the root down to the leaf. |
313 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
314 | * to any other levels that are present. |
315 | * | |
316 | * The slots array records the index of the item or block pointer | |
317 | * used while walking the tree. | |
318 | */ | |
e4058b54 | 319 | enum { READA_NONE = 0, READA_BACK, READA_FORWARD }; |
234b63a0 | 320 | struct btrfs_path { |
5f39d397 | 321 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 322 | int slots[BTRFS_MAX_LEVEL]; |
925baedd | 323 | /* if there is real range locking, this locks field will change */ |
4fb72bf2 | 324 | u8 locks[BTRFS_MAX_LEVEL]; |
dccabfad | 325 | u8 reada; |
925baedd | 326 | /* keep some upper locks as we walk down */ |
7853f15b | 327 | u8 lowest_level; |
459931ec CM |
328 | |
329 | /* | |
330 | * set by btrfs_split_item, tells search_slot to keep all locks | |
331 | * and to force calls to keep space in the nodes | |
332 | */ | |
b9473439 CM |
333 | unsigned int search_for_split:1; |
334 | unsigned int keep_locks:1; | |
335 | unsigned int skip_locking:1; | |
336 | unsigned int leave_spinning:1; | |
5d4f98a2 | 337 | unsigned int search_commit_root:1; |
3f8a18cc | 338 | unsigned int need_commit_sem:1; |
5f5bc6b1 | 339 | unsigned int skip_release_on_error:1; |
eb60ceac | 340 | }; |
da17066c | 341 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \ |
5d4f98a2 | 342 | sizeof(struct btrfs_item)) |
e922e087 SB |
343 | struct btrfs_dev_replace { |
344 | u64 replace_state; /* see #define above */ | |
a944442c AP |
345 | time64_t time_started; /* seconds since 1-Jan-1970 */ |
346 | time64_t time_stopped; /* seconds since 1-Jan-1970 */ | |
e922e087 SB |
347 | atomic64_t num_write_errors; |
348 | atomic64_t num_uncorrectable_read_errors; | |
349 | ||
350 | u64 cursor_left; | |
351 | u64 committed_cursor_left; | |
352 | u64 cursor_left_last_write_of_item; | |
353 | u64 cursor_right; | |
354 | ||
355 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
356 | ||
357 | int is_valid; | |
358 | int item_needs_writeback; | |
359 | struct btrfs_device *srcdev; | |
360 | struct btrfs_device *tgtdev; | |
361 | ||
e922e087 | 362 | struct mutex lock_finishing_cancel_unmount; |
73beece9 | 363 | rwlock_t lock; |
73beece9 LB |
364 | atomic_t blocking_readers; |
365 | wait_queue_head_t read_lock_wq; | |
e922e087 SB |
366 | |
367 | struct btrfs_scrub_progress scrub_progress; | |
7f8d236a DS |
368 | |
369 | struct percpu_counter bio_counter; | |
370 | wait_queue_head_t replace_wait; | |
e922e087 SB |
371 | }; |
372 | ||
c1895442 JM |
373 | /* For raid type sysfs entries */ |
374 | struct raid_kobject { | |
75cb379d | 375 | u64 flags; |
c1895442 | 376 | struct kobject kobj; |
75cb379d | 377 | struct list_head list; |
c1895442 JM |
378 | }; |
379 | ||
6324fbf3 | 380 | struct btrfs_space_info { |
26b47ff6 | 381 | spinlock_t lock; |
6a63209f | 382 | |
89a55897 JB |
383 | u64 total_bytes; /* total bytes in the space, |
384 | this doesn't take mirrors into account */ | |
b742bb82 | 385 | u64 bytes_used; /* total bytes used, |
e9c54999 | 386 | this doesn't take mirrors into account */ |
6a63209f JB |
387 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
388 | transaction finishes */ | |
389 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
390 | current allocations */ | |
6a63209f | 391 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 392 | delalloc/allocations */ |
26b47ff6 MX |
393 | u64 bytes_readonly; /* total bytes that are read only */ |
394 | ||
4f4db217 JB |
395 | u64 max_extent_size; /* This will hold the maximum extent size of |
396 | the space info if we had an ENOSPC in the | |
397 | allocator. */ | |
398 | ||
26b47ff6 MX |
399 | unsigned int full:1; /* indicates that we cannot allocate any more |
400 | chunks for this space */ | |
401 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
402 | ||
403 | unsigned int flush:1; /* set if we are trying to make space */ | |
404 | ||
405 | unsigned int force_alloc; /* set if we need to force a chunk | |
406 | alloc for this space */ | |
407 | ||
b742bb82 | 408 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
409 | u64 disk_total; /* total bytes on disk, takes mirrors into |
410 | account */ | |
6a63209f | 411 | |
26b47ff6 MX |
412 | u64 flags; |
413 | ||
b150a4f1 JB |
414 | /* |
415 | * bytes_pinned is kept in line with what is actually pinned, as in | |
416 | * we've called update_block_group and dropped the bytes_used counter | |
417 | * and increased the bytes_pinned counter. However this means that | |
418 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
bb7ab3b9 AB |
419 | * delayed refs are flushed, so this counter is inc'ed every time we |
420 | * call btrfs_free_extent so it is a realtime count of what will be | |
01327610 | 421 | * freed once the transaction is committed. It will be zeroed every |
bb7ab3b9 | 422 | * time the transaction commits. |
b150a4f1 JB |
423 | */ |
424 | struct percpu_counter total_bytes_pinned; | |
425 | ||
6324fbf3 | 426 | struct list_head list; |
75c68e9f | 427 | /* Protected by the spinlock 'lock'. */ |
633c0aad | 428 | struct list_head ro_bgs; |
957780eb JB |
429 | struct list_head priority_tickets; |
430 | struct list_head tickets; | |
939659df WX |
431 | /* |
432 | * tickets_id just indicates the next ticket will be handled, so note | |
433 | * it's not stored per ticket. | |
434 | */ | |
ce129655 | 435 | u64 tickets_id; |
0f9dd46c | 436 | |
26b47ff6 | 437 | struct rw_semaphore groups_sem; |
0f9dd46c | 438 | /* for block groups in our same type */ |
b742bb82 | 439 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 440 | wait_queue_head_t wait; |
6ab0a202 JM |
441 | |
442 | struct kobject kobj; | |
c1895442 | 443 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
0f9dd46c JB |
444 | }; |
445 | ||
66d8f3dd MX |
446 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
447 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
448 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
449 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
450 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
451 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
452 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
453 | ||
f0486c68 YZ |
454 | struct btrfs_block_rsv { |
455 | u64 size; | |
456 | u64 reserved; | |
f0486c68 | 457 | struct btrfs_space_info *space_info; |
f0486c68 | 458 | spinlock_t lock; |
66d8f3dd MX |
459 | unsigned short full; |
460 | unsigned short type; | |
461 | unsigned short failfast; | |
ff6bc37e QW |
462 | |
463 | /* | |
464 | * Qgroup equivalent for @size @reserved | |
465 | * | |
466 | * Unlike normal @size/@reserved for inode rsv, qgroup doesn't care | |
467 | * about things like csum size nor how many tree blocks it will need to | |
468 | * reserve. | |
469 | * | |
470 | * Qgroup cares more about net change of the extent usage. | |
471 | * | |
472 | * So for one newly inserted file extent, in worst case it will cause | |
473 | * leaf split and level increase, nodesize for each file extent is | |
474 | * already too much. | |
475 | * | |
476 | * In short, qgroup_size/reserved is the upper limit of possible needed | |
477 | * qgroup metadata reservation. | |
478 | */ | |
479 | u64 qgroup_rsv_size; | |
480 | u64 qgroup_rsv_reserved; | |
f0486c68 YZ |
481 | }; |
482 | ||
fa9c0d79 CM |
483 | /* |
484 | * free clusters are used to claim free space in relatively large chunks, | |
583b7231 HK |
485 | * allowing us to do less seeky writes. They are used for all metadata |
486 | * allocations. In ssd_spread mode they are also used for data allocations. | |
fa9c0d79 CM |
487 | */ |
488 | struct btrfs_free_cluster { | |
489 | spinlock_t lock; | |
490 | spinlock_t refill_lock; | |
491 | struct rb_root root; | |
492 | ||
493 | /* largest extent in this cluster */ | |
494 | u64 max_size; | |
495 | ||
496 | /* first extent starting offset */ | |
497 | u64 window_start; | |
498 | ||
c759c4e1 JB |
499 | /* We did a full search and couldn't create a cluster */ |
500 | bool fragmented; | |
501 | ||
fa9c0d79 CM |
502 | struct btrfs_block_group_cache *block_group; |
503 | /* | |
504 | * when a cluster is allocated from a block group, we put the | |
505 | * cluster onto a list in the block group so that it can | |
506 | * be freed before the block group is freed. | |
507 | */ | |
508 | struct list_head block_group_list; | |
6324fbf3 CM |
509 | }; |
510 | ||
817d52f8 JB |
511 | enum btrfs_caching_type { |
512 | BTRFS_CACHE_NO = 0, | |
513 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
514 | BTRFS_CACHE_FAST = 2, |
515 | BTRFS_CACHE_FINISHED = 3, | |
36cce922 | 516 | BTRFS_CACHE_ERROR = 4, |
817d52f8 JB |
517 | }; |
518 | ||
0af3d00b JB |
519 | enum btrfs_disk_cache_state { |
520 | BTRFS_DC_WRITTEN = 0, | |
521 | BTRFS_DC_ERROR = 1, | |
522 | BTRFS_DC_CLEAR = 2, | |
523 | BTRFS_DC_SETUP = 3, | |
0af3d00b JB |
524 | }; |
525 | ||
11833d66 YZ |
526 | struct btrfs_caching_control { |
527 | struct list_head list; | |
528 | struct mutex mutex; | |
529 | wait_queue_head_t wait; | |
bab39bf9 | 530 | struct btrfs_work work; |
11833d66 YZ |
531 | struct btrfs_block_group_cache *block_group; |
532 | u64 progress; | |
1e4f4714 | 533 | refcount_t count; |
11833d66 YZ |
534 | }; |
535 | ||
73fa48b6 | 536 | /* Once caching_thread() finds this much free space, it will wake up waiters. */ |
d4417e22 | 537 | #define CACHING_CTL_WAKE_UP SZ_2M |
73fa48b6 | 538 | |
4c6d1d85 CM |
539 | struct btrfs_io_ctl { |
540 | void *cur, *orig; | |
541 | struct page *page; | |
542 | struct page **pages; | |
f15376df | 543 | struct btrfs_fs_info *fs_info; |
c9dc4c65 | 544 | struct inode *inode; |
4c6d1d85 CM |
545 | unsigned long size; |
546 | int index; | |
547 | int num_pages; | |
c9dc4c65 CM |
548 | int entries; |
549 | int bitmaps; | |
4c6d1d85 CM |
550 | unsigned check_crcs:1; |
551 | }; | |
552 | ||
0966a7b1 QW |
553 | /* |
554 | * Tree to record all locked full stripes of a RAID5/6 block group | |
555 | */ | |
556 | struct btrfs_full_stripe_locks_tree { | |
557 | struct rb_root root; | |
558 | struct mutex lock; | |
559 | }; | |
560 | ||
9078a3e1 CM |
561 | struct btrfs_block_group_cache { |
562 | struct btrfs_key key; | |
563 | struct btrfs_block_group_item item; | |
817d52f8 | 564 | struct btrfs_fs_info *fs_info; |
0af3d00b | 565 | struct inode *inode; |
c286ac48 | 566 | spinlock_t lock; |
324ae4df | 567 | u64 pinned; |
e8569813 | 568 | u64 reserved; |
e570fd27 | 569 | u64 delalloc_bytes; |
1b2da372 | 570 | u64 bytes_super; |
0b86a832 | 571 | u64 flags; |
5b0e95bf | 572 | u64 cache_generation; |
a5ed9182 OS |
573 | |
574 | /* | |
575 | * If the free space extent count exceeds this number, convert the block | |
576 | * group to bitmaps. | |
577 | */ | |
578 | u32 bitmap_high_thresh; | |
579 | ||
580 | /* | |
581 | * If the free space extent count drops below this number, convert the | |
582 | * block group back to extents. | |
583 | */ | |
584 | u32 bitmap_low_thresh; | |
53b381b3 | 585 | |
e570fd27 MX |
586 | /* |
587 | * It is just used for the delayed data space allocation because | |
588 | * only the data space allocation and the relative metadata update | |
589 | * can be done cross the transaction. | |
590 | */ | |
591 | struct rw_semaphore data_rwsem; | |
592 | ||
53b381b3 DW |
593 | /* for raid56, this is a full stripe, without parity */ |
594 | unsigned long full_stripe_len; | |
595 | ||
868f401a | 596 | unsigned int ro; |
0410c94a | 597 | unsigned int iref:1; |
4f69cb98 | 598 | unsigned int has_caching_ctl:1; |
04216820 | 599 | unsigned int removed:1; |
0af3d00b JB |
600 | |
601 | int disk_cache_state; | |
0f9dd46c | 602 | |
817d52f8 | 603 | /* cache tracking stuff */ |
817d52f8 | 604 | int cached; |
11833d66 YZ |
605 | struct btrfs_caching_control *caching_ctl; |
606 | u64 last_byte_to_unpin; | |
817d52f8 | 607 | |
0f9dd46c JB |
608 | struct btrfs_space_info *space_info; |
609 | ||
610 | /* free space cache stuff */ | |
34d52cb6 | 611 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
612 | |
613 | /* block group cache stuff */ | |
614 | struct rb_node cache_node; | |
615 | ||
616 | /* for block groups in the same raid type */ | |
617 | struct list_head list; | |
d2fb3437 YZ |
618 | |
619 | /* usage count */ | |
620 | atomic_t count; | |
fa9c0d79 CM |
621 | |
622 | /* List of struct btrfs_free_clusters for this block group. | |
623 | * Today it will only have one thing on it, but that may change | |
624 | */ | |
625 | struct list_head cluster_list; | |
ea658bad | 626 | |
47ab2a6c JB |
627 | /* For delayed block group creation or deletion of empty block groups */ |
628 | struct list_head bg_list; | |
633c0aad JB |
629 | |
630 | /* For read-only block groups */ | |
631 | struct list_head ro_list; | |
04216820 FM |
632 | |
633 | atomic_t trimming; | |
ce93ec54 JB |
634 | |
635 | /* For dirty block groups */ | |
636 | struct list_head dirty_list; | |
c9dc4c65 CM |
637 | struct list_head io_list; |
638 | ||
639 | struct btrfs_io_ctl io_ctl; | |
a5ed9182 | 640 | |
9cfa3e34 FM |
641 | /* |
642 | * Incremented when doing extent allocations and holding a read lock | |
643 | * on the space_info's groups_sem semaphore. | |
644 | * Decremented when an ordered extent that represents an IO against this | |
645 | * block group's range is created (after it's added to its inode's | |
646 | * root's list of ordered extents) or immediately after the allocation | |
647 | * if it's a metadata extent or fallocate extent (for these cases we | |
648 | * don't create ordered extents). | |
649 | */ | |
650 | atomic_t reservations; | |
651 | ||
f78c436c FM |
652 | /* |
653 | * Incremented while holding the spinlock *lock* by a task checking if | |
654 | * it can perform a nocow write (incremented if the value for the *ro* | |
655 | * field is 0). Decremented by such tasks once they create an ordered | |
656 | * extent or before that if some error happens before reaching that step. | |
657 | * This is to prevent races between block group relocation and nocow | |
658 | * writes through direct IO. | |
659 | */ | |
660 | atomic_t nocow_writers; | |
661 | ||
a5ed9182 OS |
662 | /* Lock for free space tree operations. */ |
663 | struct mutex free_space_lock; | |
664 | ||
665 | /* | |
666 | * Does the block group need to be added to the free space tree? | |
667 | * Protected by free_space_lock. | |
668 | */ | |
669 | int needs_free_space; | |
0966a7b1 QW |
670 | |
671 | /* Record locked full stripes for RAID5/6 block group */ | |
672 | struct btrfs_full_stripe_locks_tree full_stripe_locks_root; | |
9078a3e1 | 673 | }; |
0b86a832 | 674 | |
097b8a7c JS |
675 | /* delayed seq elem */ |
676 | struct seq_list { | |
677 | struct list_head list; | |
678 | u64 seq; | |
679 | }; | |
680 | ||
3284da7b DS |
681 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
682 | ||
de47c9d3 EN |
683 | #define SEQ_LAST ((u64)-1) |
684 | ||
5d80366e JB |
685 | enum btrfs_orphan_cleanup_state { |
686 | ORPHAN_CLEANUP_STARTED = 1, | |
687 | ORPHAN_CLEANUP_DONE = 2, | |
688 | }; | |
689 | ||
53b381b3 DW |
690 | /* used by the raid56 code to lock stripes for read/modify/write */ |
691 | struct btrfs_stripe_hash { | |
692 | struct list_head hash_list; | |
53b381b3 DW |
693 | spinlock_t lock; |
694 | }; | |
695 | ||
696 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
697 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
698 | struct list_head stripe_cache; |
699 | spinlock_t cache_lock; | |
700 | int cache_size; | |
701 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
702 | }; |
703 | ||
704 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
705 | ||
21c7e756 MX |
706 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
707 | ||
097b8a7c | 708 | /* fs_info */ |
5d4f98a2 | 709 | struct reloc_control; |
0b86a832 | 710 | struct btrfs_device; |
8a4b83cc | 711 | struct btrfs_fs_devices; |
c9e9f97b | 712 | struct btrfs_balance_control; |
16cdcec7 | 713 | struct btrfs_delayed_root; |
afcdd129 JB |
714 | |
715 | #define BTRFS_FS_BARRIER 1 | |
716 | #define BTRFS_FS_CLOSING_START 2 | |
717 | #define BTRFS_FS_CLOSING_DONE 3 | |
718 | #define BTRFS_FS_LOG_RECOVERING 4 | |
719 | #define BTRFS_FS_OPEN 5 | |
720 | #define BTRFS_FS_QUOTA_ENABLED 6 | |
afcdd129 JB |
721 | #define BTRFS_FS_UPDATE_UUID_TREE_GEN 9 |
722 | #define BTRFS_FS_CREATING_FREE_SPACE_TREE 10 | |
723 | #define BTRFS_FS_BTREE_ERR 11 | |
724 | #define BTRFS_FS_LOG1_ERR 12 | |
725 | #define BTRFS_FS_LOG2_ERR 13 | |
f29efe29 | 726 | #define BTRFS_FS_QUOTA_OVERRIDE 14 |
fac03c8d DS |
727 | /* Used to record internally whether fs has been frozen */ |
728 | #define BTRFS_FS_FROZEN 15 | |
f29efe29 | 729 | |
171938e5 DS |
730 | /* |
731 | * Indicate that a whole-filesystem exclusive operation is running | |
732 | * (device replace, resize, device add/delete, balance) | |
733 | */ | |
69ad5976 | 734 | #define BTRFS_FS_EXCL_OP 16 |
afcdd129 | 735 | |
a514d638 QW |
736 | /* |
737 | * To info transaction_kthread we need an immediate commit so it doesn't | |
738 | * need to wait for commit_interval | |
739 | */ | |
740 | #define BTRFS_FS_NEED_ASYNC_COMMIT 17 | |
741 | ||
3009a62f DS |
742 | /* |
743 | * Indicate that balance has been set up from the ioctl and is in the main | |
744 | * phase. The fs_info::balance_ctl is initialized. | |
745 | */ | |
746 | #define BTRFS_FS_BALANCE_RUNNING 18 | |
747 | ||
9f5fae2f | 748 | struct btrfs_fs_info { |
5f39d397 | 749 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 750 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
afcdd129 | 751 | unsigned long flags; |
62e2749e CM |
752 | struct btrfs_root *extent_root; |
753 | struct btrfs_root *tree_root; | |
0b86a832 CM |
754 | struct btrfs_root *chunk_root; |
755 | struct btrfs_root *dev_root; | |
3de4586c | 756 | struct btrfs_root *fs_root; |
d20f7043 | 757 | struct btrfs_root *csum_root; |
416ac51d | 758 | struct btrfs_root *quota_root; |
f7a81ea4 | 759 | struct btrfs_root *uuid_root; |
a5ed9182 | 760 | struct btrfs_root *free_space_root; |
e02119d5 CM |
761 | |
762 | /* the log root tree is a directory of all the other log roots */ | |
763 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
764 | |
765 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 766 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 767 | |
0f9dd46c JB |
768 | /* block group cache stuff */ |
769 | spinlock_t block_group_cache_lock; | |
a1897fdd | 770 | u64 first_logical_byte; |
0f9dd46c JB |
771 | struct rb_root block_group_cache_tree; |
772 | ||
2bf64758 | 773 | /* keep track of unallocated space */ |
a5ed45f8 | 774 | atomic64_t free_chunk_space; |
2bf64758 | 775 | |
11833d66 YZ |
776 | struct extent_io_tree freed_extents[2]; |
777 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 778 | |
0b86a832 CM |
779 | /* logical->physical extent mapping */ |
780 | struct btrfs_mapping_tree mapping_tree; | |
781 | ||
16cdcec7 MX |
782 | /* |
783 | * block reservation for extent, checksum, root tree and | |
784 | * delayed dir index item | |
785 | */ | |
f0486c68 | 786 | struct btrfs_block_rsv global_block_rsv; |
f0486c68 YZ |
787 | /* block reservation for metadata operations */ |
788 | struct btrfs_block_rsv trans_block_rsv; | |
789 | /* block reservation for chunk tree */ | |
790 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
791 | /* block reservation for delayed operations */ |
792 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
793 | |
794 | struct btrfs_block_rsv empty_block_rsv; | |
795 | ||
293ffd5f | 796 | u64 generation; |
15ee9bc7 | 797 | u64 last_trans_committed; |
0a2b2a84 | 798 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
799 | |
800 | /* | |
801 | * this is updated to the current trans every time a full commit | |
802 | * is required instead of the faster short fsync log commits | |
803 | */ | |
804 | u64 last_trans_log_full_commit; | |
25cd999e | 805 | unsigned long mount_opt; |
572d9ab7 DS |
806 | /* |
807 | * Track requests for actions that need to be done during transaction | |
808 | * commit (like for some mount options). | |
809 | */ | |
810 | unsigned long pending_changes; | |
261507a0 | 811 | unsigned long compress_type:4; |
f51d2b59 | 812 | unsigned int compress_level; |
d3740608 | 813 | u32 commit_interval; |
8c6a3ee6 MX |
814 | /* |
815 | * It is a suggestive number, the read side is safe even it gets a | |
816 | * wrong number because we will write out the data into a regular | |
817 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
818 | * so it is also safe. | |
819 | */ | |
6f568d35 | 820 | u64 max_inline; |
0d0c71b3 | 821 | |
79154b1b | 822 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 823 | wait_queue_head_t transaction_throttle; |
f9295749 | 824 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 825 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 826 | wait_queue_head_t async_submit_wait; |
e02119d5 | 827 | |
ceda0864 MX |
828 | /* |
829 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
830 | * when they are updated. | |
831 | * | |
832 | * Because we do not clear the flags for ever, so we needn't use | |
833 | * the lock on the read side. | |
834 | * | |
835 | * We also needn't use the lock when we mount the fs, because | |
836 | * there is no other task which will update the flag. | |
837 | */ | |
838 | spinlock_t super_lock; | |
6c41761f DS |
839 | struct btrfs_super_block *super_copy; |
840 | struct btrfs_super_block *super_for_commit; | |
e20d96d6 | 841 | struct super_block *sb; |
d98237b3 | 842 | struct inode *btree_inode; |
e02119d5 | 843 | struct mutex tree_log_mutex; |
a74a4b97 CM |
844 | struct mutex transaction_kthread_mutex; |
845 | struct mutex cleaner_mutex; | |
925baedd | 846 | struct mutex chunk_mutex; |
53b381b3 | 847 | |
1bbc621e CM |
848 | /* |
849 | * this is taken to make sure we don't set block groups ro after | |
850 | * the free space cache has been allocated on them | |
851 | */ | |
852 | struct mutex ro_block_group_mutex; | |
853 | ||
53b381b3 DW |
854 | /* this is used during read/modify/write to make sure |
855 | * no two ios are trying to mod the same stripe at the same | |
856 | * time | |
857 | */ | |
858 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
859 | ||
5a3f23d5 CM |
860 | /* |
861 | * this protects the ordered operations list only while we are | |
862 | * processing all of the entries on it. This way we make | |
863 | * sure the commit code doesn't find the list temporarily empty | |
864 | * because another function happens to be doing non-waiting preflush | |
865 | * before jumping into the main commit. | |
866 | */ | |
867 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 868 | |
9e351cc8 | 869 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 870 | |
c71bf099 | 871 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 872 | |
c71bf099 | 873 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
874 | struct srcu_struct subvol_srcu; |
875 | ||
a4abeea4 | 876 | spinlock_t trans_lock; |
7585717f CM |
877 | /* |
878 | * the reloc mutex goes with the trans lock, it is taken | |
879 | * during commit to protect us from the relocation code | |
880 | */ | |
881 | struct mutex reloc_mutex; | |
882 | ||
8fd17795 | 883 | struct list_head trans_list; |
facda1e7 | 884 | struct list_head dead_roots; |
11833d66 | 885 | struct list_head caching_block_groups; |
e02119d5 | 886 | |
24bbcf04 YZ |
887 | spinlock_t delayed_iput_lock; |
888 | struct list_head delayed_iputs; | |
c2d6cb16 | 889 | struct mutex cleaner_delayed_iput_mutex; |
24bbcf04 | 890 | |
f29021b2 JS |
891 | /* this protects tree_mod_seq_list */ |
892 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 893 | atomic64_t tree_mod_seq; |
f29021b2 JS |
894 | struct list_head tree_mod_seq_list; |
895 | ||
896 | /* this protects tree_mod_log */ | |
897 | rwlock_t tree_mod_log_lock; | |
898 | struct rb_root tree_mod_log; | |
899 | ||
771ed689 | 900 | atomic_t async_delalloc_pages; |
ce9adaa5 | 901 | |
3eaa2885 | 902 | /* |
199c2a9c | 903 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 904 | */ |
199c2a9c | 905 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
906 | |
907 | /* | |
199c2a9c MX |
908 | * all fs/file tree roots in which there are data=ordered extents |
909 | * pending writeback are added into this list. | |
910 | * | |
5a3f23d5 CM |
911 | * these can span multiple transactions and basically include |
912 | * every dirty data page that isn't from nodatacow | |
913 | */ | |
199c2a9c | 914 | struct list_head ordered_roots; |
5a3f23d5 | 915 | |
573bfb72 | 916 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
917 | spinlock_t delalloc_root_lock; |
918 | /* all fs/file tree roots that have delalloc inodes. */ | |
919 | struct list_head delalloc_roots; | |
3eaa2885 | 920 | |
8b712842 CM |
921 | /* |
922 | * there is a pool of worker threads for checksumming during writes | |
923 | * and a pool for checksumming after reads. This is because readers | |
924 | * can run with FS locks held, and the writers may be waiting for | |
925 | * those locks. We don't want ordering in the pending list to cause | |
926 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
927 | * |
928 | * A third pool does submit_bio to avoid deadlocking with the other | |
929 | * two | |
8b712842 | 930 | */ |
d458b054 QW |
931 | struct btrfs_workqueue *workers; |
932 | struct btrfs_workqueue *delalloc_workers; | |
933 | struct btrfs_workqueue *flush_workers; | |
934 | struct btrfs_workqueue *endio_workers; | |
935 | struct btrfs_workqueue *endio_meta_workers; | |
936 | struct btrfs_workqueue *endio_raid56_workers; | |
8b110e39 | 937 | struct btrfs_workqueue *endio_repair_workers; |
d458b054 QW |
938 | struct btrfs_workqueue *rmw_workers; |
939 | struct btrfs_workqueue *endio_meta_write_workers; | |
940 | struct btrfs_workqueue *endio_write_workers; | |
941 | struct btrfs_workqueue *endio_freespace_worker; | |
942 | struct btrfs_workqueue *submit_workers; | |
943 | struct btrfs_workqueue *caching_workers; | |
944 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 945 | |
247e743c CM |
946 | /* |
947 | * fixup workers take dirty pages that didn't properly go through | |
948 | * the cow mechanism and make them safe to write. It happens | |
949 | * for the sys_munmap function call path | |
950 | */ | |
d458b054 QW |
951 | struct btrfs_workqueue *fixup_workers; |
952 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b CM |
953 | |
954 | /* the extent workers do delayed refs on the extent allocation tree */ | |
955 | struct btrfs_workqueue *extent_workers; | |
a74a4b97 CM |
956 | struct task_struct *transaction_kthread; |
957 | struct task_struct *cleaner_kthread; | |
f7b885be | 958 | u32 thread_pool_size; |
8b712842 | 959 | |
6ab0a202 | 960 | struct kobject *space_info_kobj; |
75cb379d JM |
961 | struct list_head pending_raid_kobjs; |
962 | spinlock_t pending_raid_kobjs_lock; /* uncontended */ | |
9f5fae2f | 963 | |
324ae4df | 964 | u64 total_pinned; |
b9473439 | 965 | |
e2d84521 MX |
966 | /* used to keep from writing metadata until there is a nice batch */ |
967 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 968 | struct percpu_counter delalloc_bytes; |
e2d84521 | 969 | s32 dirty_metadata_batch; |
963d678b MX |
970 | s32 delalloc_batch; |
971 | ||
0b86a832 CM |
972 | struct list_head dirty_cowonly_roots; |
973 | ||
8a4b83cc | 974 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
975 | |
976 | /* | |
dc2d3005 JM |
977 | * The space_info list is effectively read only after initial |
978 | * setup. It is populated at mount time and cleaned up after | |
979 | * all block groups are removed. RCU is used to protect it. | |
4184ea7f | 980 | */ |
6324fbf3 | 981 | struct list_head space_info; |
4184ea7f | 982 | |
b4d7c3c9 LZ |
983 | struct btrfs_space_info *data_sinfo; |
984 | ||
5d4f98a2 YZ |
985 | struct reloc_control *reloc_ctl; |
986 | ||
583b7231 | 987 | /* data_alloc_cluster is only used in ssd_spread mode */ |
fa9c0d79 CM |
988 | struct btrfs_free_cluster data_alloc_cluster; |
989 | ||
990 | /* all metadata allocations go through this cluster */ | |
991 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 992 | |
4cb5300b CM |
993 | /* auto defrag inodes go here */ |
994 | spinlock_t defrag_inodes_lock; | |
995 | struct rb_root defrag_inodes; | |
996 | atomic_t defrag_running; | |
997 | ||
de98ced9 MX |
998 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
999 | seqlock_t profiles_lock; | |
a46d11a8 ID |
1000 | /* |
1001 | * these three are in extended format (availability of single | |
1002 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
1003 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
1004 | */ | |
d18a2c44 CM |
1005 | u64 avail_data_alloc_bits; |
1006 | u64 avail_metadata_alloc_bits; | |
1007 | u64 avail_system_alloc_bits; | |
788f20eb | 1008 | |
c9e9f97b ID |
1009 | /* restriper state */ |
1010 | spinlock_t balance_lock; | |
1011 | struct mutex balance_mutex; | |
837d5b6e | 1012 | atomic_t balance_pause_req; |
a7e99c69 | 1013 | atomic_t balance_cancel_req; |
c9e9f97b | 1014 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1015 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1016 | |
d612ac59 AJ |
1017 | u32 data_chunk_allocations; |
1018 | u32 metadata_ratio; | |
97e728d4 | 1019 | |
788f20eb | 1020 | void *bdev_holder; |
acce952b | 1021 | |
a2de733c AJ |
1022 | /* private scrub information */ |
1023 | struct mutex scrub_lock; | |
1024 | atomic_t scrubs_running; | |
1025 | atomic_t scrub_pause_req; | |
1026 | atomic_t scrubs_paused; | |
1027 | atomic_t scrub_cancel_req; | |
1028 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 1029 | int scrub_workers_refcnt; |
d458b054 QW |
1030 | struct btrfs_workqueue *scrub_workers; |
1031 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
1032 | struct btrfs_workqueue *scrub_nocow_workers; | |
20b2e302 | 1033 | struct btrfs_workqueue *scrub_parity_workers; |
a2de733c | 1034 | |
21adbd5c SB |
1035 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1036 | u32 check_integrity_print_mask; | |
1037 | #endif | |
416ac51d AJ |
1038 | /* is qgroup tracking in a consistent state? */ |
1039 | u64 qgroup_flags; | |
1040 | ||
1041 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1042 | struct rb_root qgroup_tree; | |
fcebe456 | 1043 | struct rb_root qgroup_op_tree; |
416ac51d | 1044 | spinlock_t qgroup_lock; |
fcebe456 JB |
1045 | spinlock_t qgroup_op_lock; |
1046 | atomic_t qgroup_op_seq; | |
416ac51d | 1047 | |
1e8f9158 WS |
1048 | /* |
1049 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1050 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1051 | */ | |
1052 | struct ulist *qgroup_ulist; | |
1053 | ||
f2f6ed3d WS |
1054 | /* protect user change for quota operations */ |
1055 | struct mutex qgroup_ioctl_lock; | |
1056 | ||
416ac51d AJ |
1057 | /* list of dirty qgroups to be written at next commit */ |
1058 | struct list_head dirty_qgroups; | |
1059 | ||
e69bcee3 | 1060 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 1061 | u64 qgroup_seq; |
21adbd5c | 1062 | |
2f232036 JS |
1063 | /* qgroup rescan items */ |
1064 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1065 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1066 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1067 | struct completion qgroup_rescan_completion; |
b382a324 | 1068 | struct btrfs_work qgroup_rescan_work; |
d2c609b8 | 1069 | bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ |
2f232036 | 1070 | |
acce952b | 1071 | /* filesystem state */ |
87533c47 | 1072 | unsigned long fs_state; |
16cdcec7 MX |
1073 | |
1074 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1075 | |
90519d66 AJ |
1076 | /* readahead tree */ |
1077 | spinlock_t reada_lock; | |
1078 | struct radix_tree_root reada_tree; | |
531f4b1a | 1079 | |
2fefd558 ZL |
1080 | /* readahead works cnt */ |
1081 | atomic_t reada_works_cnt; | |
1082 | ||
f28491e0 JB |
1083 | /* Extent buffer radix tree */ |
1084 | spinlock_t buffer_lock; | |
1085 | struct radix_tree_root buffer_radix; | |
1086 | ||
af31f5e5 CM |
1087 | /* next backup root to be overwritten */ |
1088 | int backup_root_index; | |
5af3e8cc | 1089 | |
e922e087 SB |
1090 | /* device replace state */ |
1091 | struct btrfs_dev_replace dev_replace; | |
5ac00add | 1092 | |
803b2f54 | 1093 | struct semaphore uuid_tree_rescan_sem; |
21c7e756 MX |
1094 | |
1095 | /* Used to reclaim the metadata space in the background. */ | |
1096 | struct work_struct async_reclaim_work; | |
47ab2a6c JB |
1097 | |
1098 | spinlock_t unused_bgs_lock; | |
1099 | struct list_head unused_bgs; | |
d4b450cd | 1100 | struct mutex unused_bg_unpin_mutex; |
67c5e7d4 | 1101 | struct mutex delete_unused_bgs_mutex; |
f667aef6 QW |
1102 | |
1103 | /* For btrfs to record security options */ | |
1104 | struct security_mnt_opts security_opts; | |
04216820 FM |
1105 | |
1106 | /* | |
1107 | * Chunks that can't be freed yet (under a trim/discard operation) | |
1108 | * and will be latter freed. Protected by fs_info->chunk_mutex. | |
1109 | */ | |
1110 | struct list_head pinned_chunks; | |
511711af | 1111 | |
da17066c JM |
1112 | /* Cached block sizes */ |
1113 | u32 nodesize; | |
1114 | u32 sectorsize; | |
1115 | u32 stripesize; | |
fd708b81 JB |
1116 | |
1117 | #ifdef CONFIG_BTRFS_FS_REF_VERIFY | |
1118 | spinlock_t ref_verify_lock; | |
1119 | struct rb_root block_tree; | |
1120 | #endif | |
324ae4df | 1121 | }; |
0b86a832 | 1122 | |
da17066c JM |
1123 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
1124 | { | |
1125 | return sb->s_fs_info; | |
1126 | } | |
1127 | ||
8257b2dc MX |
1128 | struct btrfs_subvolume_writers { |
1129 | struct percpu_counter counter; | |
1130 | wait_queue_head_t wait; | |
1131 | }; | |
1132 | ||
27cdeb70 MX |
1133 | /* |
1134 | * The state of btrfs root | |
1135 | */ | |
1136 | /* | |
1137 | * btrfs_record_root_in_trans is a multi-step process, | |
1138 | * and it can race with the balancing code. But the | |
1139 | * race is very small, and only the first time the root | |
1140 | * is added to each transaction. So IN_TRANS_SETUP | |
1141 | * is used to tell us when more checks are required | |
1142 | */ | |
1143 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 | |
1144 | #define BTRFS_ROOT_REF_COWS 1 | |
1145 | #define BTRFS_ROOT_TRACK_DIRTY 2 | |
1146 | #define BTRFS_ROOT_IN_RADIX 3 | |
f5ee5c9a JM |
1147 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 4 |
1148 | #define BTRFS_ROOT_DEFRAG_RUNNING 5 | |
1149 | #define BTRFS_ROOT_FORCE_COW 6 | |
1150 | #define BTRFS_ROOT_MULTI_LOG_TASKS 7 | |
1151 | #define BTRFS_ROOT_DIRTY 8 | |
27cdeb70 | 1152 | |
9f5fae2f CM |
1153 | /* |
1154 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1155 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1156 | */ |
1157 | struct btrfs_root { | |
5f39d397 | 1158 | struct extent_buffer *node; |
925baedd | 1159 | |
5f39d397 | 1160 | struct extent_buffer *commit_root; |
e02119d5 | 1161 | struct btrfs_root *log_root; |
1a40e23b | 1162 | struct btrfs_root *reloc_root; |
31153d81 | 1163 | |
27cdeb70 | 1164 | unsigned long state; |
62e2749e CM |
1165 | struct btrfs_root_item root_item; |
1166 | struct btrfs_key root_key; | |
9f5fae2f | 1167 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1168 | struct extent_io_tree dirty_log_pages; |
1169 | ||
a2135011 | 1170 | struct mutex objectid_mutex; |
7237f183 | 1171 | |
f0486c68 YZ |
1172 | spinlock_t accounting_lock; |
1173 | struct btrfs_block_rsv *block_rsv; | |
1174 | ||
581bb050 | 1175 | /* free ino cache stuff */ |
581bb050 | 1176 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1177 | enum btrfs_caching_type ino_cache_state; |
1178 | spinlock_t ino_cache_lock; | |
1179 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1180 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1181 | u64 ino_cache_progress; |
1182 | struct inode *ino_cache_inode; | |
581bb050 | 1183 | |
e02119d5 | 1184 | struct mutex log_mutex; |
7237f183 YZ |
1185 | wait_queue_head_t log_writer_wait; |
1186 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1187 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1188 | atomic_t log_writers; |
1189 | atomic_t log_commit[2]; | |
2ecb7923 | 1190 | atomic_t log_batch; |
bb14a59b | 1191 | int log_transid; |
d1433deb MX |
1192 | /* No matter the commit succeeds or not*/ |
1193 | int log_transid_committed; | |
1194 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1195 | int last_log_commit; |
ff782e0a | 1196 | pid_t log_start_pid; |
ea8c2819 | 1197 | |
0f7d52f4 | 1198 | u64 last_trans; |
5f39d397 | 1199 | |
9f5fae2f | 1200 | u32 type; |
13a8a7c8 YZ |
1201 | |
1202 | u64 highest_objectid; | |
7585717f | 1203 | |
3f157a2f | 1204 | u64 defrag_trans_start; |
6702ed49 | 1205 | struct btrfs_key defrag_progress; |
0ef3e66b | 1206 | struct btrfs_key defrag_max; |
0b86a832 CM |
1207 | |
1208 | /* the dirty list is only used by non-reference counted roots */ | |
1209 | struct list_head dirty_list; | |
7b128766 | 1210 | |
5d4f98a2 YZ |
1211 | struct list_head root_list; |
1212 | ||
2ab28f32 JB |
1213 | spinlock_t log_extents_lock[2]; |
1214 | struct list_head logged_list[2]; | |
1215 | ||
d68fc57b | 1216 | int orphan_cleanup_state; |
3394e160 | 1217 | |
5d4f98a2 YZ |
1218 | spinlock_t inode_lock; |
1219 | /* red-black tree that keeps track of in-memory inodes */ | |
1220 | struct rb_root inode_tree; | |
1221 | ||
16cdcec7 MX |
1222 | /* |
1223 | * radix tree that keeps track of delayed nodes of every inode, | |
1224 | * protected by inode_lock | |
1225 | */ | |
1226 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1227 | /* |
1228 | * right now this just gets used so that a root has its own devid | |
1229 | * for stat. It may be used for more later | |
1230 | */ | |
0ee5dc67 | 1231 | dev_t anon_dev; |
f1ebcc74 | 1232 | |
5f3ab90a | 1233 | spinlock_t root_item_lock; |
0700cea7 | 1234 | refcount_t refs; |
eb73c1b7 | 1235 | |
573bfb72 | 1236 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1237 | spinlock_t delalloc_lock; |
1238 | /* | |
1239 | * all of the inodes that have delalloc bytes. It is possible for | |
1240 | * this list to be empty even when there is still dirty data=ordered | |
1241 | * extents waiting to finish IO. | |
1242 | */ | |
1243 | struct list_head delalloc_inodes; | |
1244 | struct list_head delalloc_root; | |
1245 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1246 | |
1247 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1248 | /* |
1249 | * this is used by the balancing code to wait for all the pending | |
1250 | * ordered extents | |
1251 | */ | |
1252 | spinlock_t ordered_extent_lock; | |
1253 | ||
1254 | /* | |
1255 | * all of the data=ordered extents pending writeback | |
1256 | * these can span multiple transactions and basically include | |
1257 | * every dirty data page that isn't from nodatacow | |
1258 | */ | |
1259 | struct list_head ordered_extents; | |
1260 | struct list_head ordered_root; | |
1261 | u64 nr_ordered_extents; | |
2c686537 DS |
1262 | |
1263 | /* | |
1264 | * Number of currently running SEND ioctls to prevent | |
1265 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1266 | */ | |
1267 | int send_in_progress; | |
8257b2dc | 1268 | struct btrfs_subvolume_writers *subv_writers; |
ea14b57f | 1269 | atomic_t will_be_snapshotted; |
8ecebf4d | 1270 | atomic_t snapshot_force_cow; |
8287475a QW |
1271 | |
1272 | /* For qgroup metadata reserved space */ | |
1273 | spinlock_t qgroup_meta_rsv_lock; | |
1274 | u64 qgroup_meta_rsv_pertrans; | |
1275 | u64 qgroup_meta_rsv_prealloc; | |
57ec5fb4 DS |
1276 | |
1277 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
1278 | u64 alloc_bytenr; | |
1279 | #endif | |
62e2749e | 1280 | }; |
118c701e | 1281 | |
23b5ec74 | 1282 | struct btrfs_file_private { |
23b5ec74 JB |
1283 | void *filldir_buf; |
1284 | }; | |
1285 | ||
da17066c JM |
1286 | static inline u32 btrfs_inode_sectorsize(const struct inode *inode) |
1287 | { | |
1288 | return btrfs_sb(inode->i_sb)->sectorsize; | |
1289 | } | |
62e2749e | 1290 | |
da17066c | 1291 | static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1292 | { |
118c701e NB |
1293 | |
1294 | return info->nodesize - sizeof(struct btrfs_header); | |
1db1ff92 JM |
1295 | } |
1296 | ||
3d9ec8c4 NB |
1297 | #define BTRFS_LEAF_DATA_OFFSET offsetof(struct btrfs_leaf, items) |
1298 | ||
da17066c | 1299 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1300 | { |
da17066c | 1301 | return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item); |
1db1ff92 JM |
1302 | } |
1303 | ||
da17066c | 1304 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info) |
1db1ff92 | 1305 | { |
da17066c | 1306 | return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr); |
1db1ff92 JM |
1307 | } |
1308 | ||
1309 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ | |
1310 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
da17066c | 1311 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1312 | { |
da17066c | 1313 | return BTRFS_MAX_ITEM_SIZE(info) - |
1db1ff92 JM |
1314 | BTRFS_FILE_EXTENT_INLINE_DATA_START; |
1315 | } | |
1316 | ||
da17066c | 1317 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1318 | { |
da17066c | 1319 | return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item); |
1db1ff92 JM |
1320 | } |
1321 | ||
0942caa3 DS |
1322 | /* |
1323 | * Flags for mount options. | |
1324 | * | |
1325 | * Note: don't forget to add new options to btrfs_show_options() | |
1326 | */ | |
21ad10cf CM |
1327 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1328 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1329 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1330 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1331 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1332 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1333 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1334 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1335 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1336 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1337 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1338 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1339 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1340 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1341 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1342 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1343 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1344 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
8dcddfa0 | 1345 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
9555c6c1 | 1346 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1347 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1348 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1349 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 1350 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
d0bd4560 JB |
1351 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
1352 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) | |
f7d3d2f9 | 1353 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
96da0919 | 1354 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
fb592373 | 1355 | #define BTRFS_MOUNT_REF_VERIFY (1 << 28) |
b6cda9bc | 1356 | |
8b87dc17 | 1357 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1358 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1359 | |
b6cda9bc CM |
1360 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1361 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1362 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
3cdde224 | 1363 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
b6cda9bc | 1364 | BTRFS_MOUNT_##opt) |
572d9ab7 | 1365 | |
3cdde224 | 1366 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1367 | { \ |
3cdde224 JM |
1368 | if (!btrfs_test_opt(fs_info, opt)) \ |
1369 | btrfs_info(fs_info, fmt, ##args); \ | |
1370 | btrfs_set_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1371 | } |
1372 | ||
3cdde224 | 1373 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1374 | { \ |
3cdde224 JM |
1375 | if (btrfs_test_opt(fs_info, opt)) \ |
1376 | btrfs_info(fs_info, fmt, ##args); \ | |
1377 | btrfs_clear_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1378 | } |
1379 | ||
d0bd4560 JB |
1380 | #ifdef CONFIG_BTRFS_DEBUG |
1381 | static inline int | |
2ff7e61e | 1382 | btrfs_should_fragment_free_space(struct btrfs_block_group_cache *block_group) |
d0bd4560 | 1383 | { |
2ff7e61e | 1384 | struct btrfs_fs_info *fs_info = block_group->fs_info; |
0b246afa JM |
1385 | |
1386 | return (btrfs_test_opt(fs_info, FRAGMENT_METADATA) && | |
d0bd4560 | 1387 | block_group->flags & BTRFS_BLOCK_GROUP_METADATA) || |
0b246afa | 1388 | (btrfs_test_opt(fs_info, FRAGMENT_DATA) && |
d0bd4560 JB |
1389 | block_group->flags & BTRFS_BLOCK_GROUP_DATA); |
1390 | } | |
1391 | #endif | |
1392 | ||
572d9ab7 DS |
1393 | /* |
1394 | * Requests for changes that need to be done during transaction commit. | |
1395 | * | |
1396 | * Internal mount options that are used for special handling of the real | |
1397 | * mount options (eg. cannot be set during remount and have to be set during | |
1398 | * transaction commit) | |
1399 | */ | |
1400 | ||
7e1876ac DS |
1401 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
1402 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) | |
d51033d0 | 1403 | #define BTRFS_PENDING_COMMIT (2) |
7e1876ac | 1404 | |
572d9ab7 DS |
1405 | #define btrfs_test_pending(info, opt) \ |
1406 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1407 | #define btrfs_set_pending(info, opt) \ | |
1408 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1409 | #define btrfs_clear_pending(info, opt) \ | |
1410 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1411 | ||
1412 | /* | |
1413 | * Helpers for setting pending mount option changes. | |
1414 | * | |
1415 | * Expects corresponding macros | |
1416 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1417 | */ | |
1418 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1419 | do { \ | |
1420 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1421 | btrfs_info((info), fmt, ##args); \ | |
1422 | btrfs_set_pending((info), SET_##opt); \ | |
1423 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1424 | } \ | |
1425 | } while(0) | |
1426 | ||
1427 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1428 | do { \ | |
1429 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1430 | btrfs_info((info), fmt, ##args); \ | |
1431 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1432 | btrfs_clear_pending((info), SET_##opt); \ | |
1433 | } \ | |
1434 | } while(0) | |
1435 | ||
b98b6767 Y |
1436 | /* |
1437 | * Inode flags | |
1438 | */ | |
fdebe2bd Y |
1439 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1440 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1441 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1442 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1443 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1444 | #define BTRFS_INODE_SYNC (1 << 5) |
1445 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1446 | #define BTRFS_INODE_APPEND (1 << 7) | |
1447 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1448 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1449 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1450 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1451 | |
08fe4db1 LZ |
1452 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1453 | ||
cfed81a0 | 1454 | struct btrfs_map_token { |
1cbb1f45 | 1455 | const struct extent_buffer *eb; |
cfed81a0 CM |
1456 | char *kaddr; |
1457 | unsigned long offset; | |
1458 | }; | |
1459 | ||
2e78c927 CR |
1460 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
1461 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) | |
1462 | ||
cfed81a0 CM |
1463 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
1464 | { | |
ad914559 | 1465 | token->kaddr = NULL; |
cfed81a0 CM |
1466 | } |
1467 | ||
01327610 | 1468 | /* some macros to generate set/get functions for the struct fields. This |
5f39d397 CM |
1469 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
1470 | * one for u8: | |
1471 | */ | |
1472 | #define le8_to_cpu(v) (v) | |
1473 | #define cpu_to_le8(v) (v) | |
1474 | #define __le8 u8 | |
1475 | ||
62e85577 | 1476 | #define read_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1477 | read_extent_buffer(eb, (char *)(result), \ |
1478 | ((unsigned long)(ptr)) + \ | |
1479 | offsetof(type, member), \ | |
1480 | sizeof(((type *)0)->member))) | |
1481 | ||
62e85577 | 1482 | #define write_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1483 | write_extent_buffer(eb, (char *)(result), \ |
1484 | ((unsigned long)(ptr)) + \ | |
1485 | offsetof(type, member), \ | |
1486 | sizeof(((type *)0)->member))) | |
1487 | ||
18077bb4 | 1488 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1cbb1f45 JM |
1489 | u##bits btrfs_get_token_##bits(const struct extent_buffer *eb, \ |
1490 | const void *ptr, unsigned long off, \ | |
1491 | struct btrfs_map_token *token); \ | |
1492 | void btrfs_set_token_##bits(struct extent_buffer *eb, const void *ptr, \ | |
18077bb4 LZ |
1493 | unsigned long off, u##bits val, \ |
1494 | struct btrfs_map_token *token); \ | |
1cbb1f45 JM |
1495 | static inline u##bits btrfs_get_##bits(const struct extent_buffer *eb, \ |
1496 | const void *ptr, \ | |
18077bb4 LZ |
1497 | unsigned long off) \ |
1498 | { \ | |
1499 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1500 | } \ | |
1cbb1f45 | 1501 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr,\ |
18077bb4 LZ |
1502 | unsigned long off, u##bits val) \ |
1503 | { \ | |
1504 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1505 | } | |
1506 | ||
1507 | DECLARE_BTRFS_SETGET_BITS(8) | |
1508 | DECLARE_BTRFS_SETGET_BITS(16) | |
1509 | DECLARE_BTRFS_SETGET_BITS(32) | |
1510 | DECLARE_BTRFS_SETGET_BITS(64) | |
1511 | ||
5f39d397 | 1512 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
1cbb1f45 JM |
1513 | static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ |
1514 | const type *s) \ | |
18077bb4 LZ |
1515 | { \ |
1516 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1517 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1518 | } \ | |
1519 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1520 | u##bits val) \ | |
1521 | { \ | |
1522 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1523 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1524 | } \ | |
1cbb1f45 JM |
1525 | static inline u##bits btrfs_token_##name(const struct extent_buffer *eb,\ |
1526 | const type *s, \ | |
18077bb4 LZ |
1527 | struct btrfs_map_token *token) \ |
1528 | { \ | |
1529 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1530 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1531 | } \ | |
1532 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
1533 | type *s, u##bits val, \ | |
1534 | struct btrfs_map_token *token) \ | |
1535 | { \ | |
1536 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1537 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
1538 | } | |
5f39d397 CM |
1539 | |
1540 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1cbb1f45 | 1541 | static inline u##bits btrfs_##name(const struct extent_buffer *eb) \ |
5f39d397 | 1542 | { \ |
1cbb1f45 | 1543 | const type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1544 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1545 | return res; \ |
5f39d397 CM |
1546 | } \ |
1547 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1548 | u##bits val) \ | |
1549 | { \ | |
727011e0 | 1550 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1551 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1552 | } |
9078a3e1 | 1553 | |
5f39d397 | 1554 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1cbb1f45 | 1555 | static inline u##bits btrfs_##name(const type *s) \ |
5f39d397 CM |
1556 | { \ |
1557 | return le##bits##_to_cpu(s->member); \ | |
1558 | } \ | |
1559 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1560 | { \ | |
1561 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1562 | } |
1563 | ||
eca152ed NB |
1564 | |
1565 | static inline u64 btrfs_device_total_bytes(struct extent_buffer *eb, | |
1566 | struct btrfs_dev_item *s) | |
1567 | { | |
1568 | BUILD_BUG_ON(sizeof(u64) != | |
1569 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
1570 | return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, | |
1571 | total_bytes)); | |
1572 | } | |
1573 | static inline void btrfs_set_device_total_bytes(struct extent_buffer *eb, | |
1574 | struct btrfs_dev_item *s, | |
1575 | u64 val) | |
1576 | { | |
1577 | BUILD_BUG_ON(sizeof(u64) != | |
1578 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
7dfb8be1 | 1579 | WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize)); |
eca152ed NB |
1580 | btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val); |
1581 | } | |
1582 | ||
1583 | ||
0b86a832 | 1584 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
0b86a832 CM |
1585 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
1586 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1587 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1588 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1589 | start_offset, 64); | |
0b86a832 CM |
1590 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1591 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1592 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1593 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1594 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1595 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1596 | |
8a4b83cc CM |
1597 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1598 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1599 | total_bytes, 64); | |
1600 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1601 | bytes_used, 64); | |
1602 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1603 | io_align, 32); | |
1604 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1605 | io_width, 32); | |
1606 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1607 | sector_size, 32); | |
1608 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1609 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1610 | dev_group, 32); | |
1611 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1612 | seek_speed, 8); | |
1613 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1614 | bandwidth, 8); | |
2b82032c YZ |
1615 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1616 | generation, 64); | |
8a4b83cc | 1617 | |
410ba3a2 | 1618 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1619 | { |
410ba3a2 | 1620 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1621 | } |
1622 | ||
1473b24e | 1623 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1624 | { |
1473b24e | 1625 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1626 | } |
1627 | ||
e17cade2 | 1628 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1629 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1630 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1631 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1632 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1633 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1634 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1635 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1636 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1637 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1638 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1639 | ||
e17cade2 CM |
1640 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1641 | { | |
1642 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1643 | } | |
1644 | ||
1645 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1646 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1647 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1648 | stripe_len, 64); | |
1649 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1650 | io_align, 32); | |
1651 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1652 | io_width, 32); | |
1653 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1654 | sector_size, 32); | |
1655 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1656 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1657 | num_stripes, 16); | |
321aecc6 CM |
1658 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1659 | sub_stripes, 16); | |
0b86a832 CM |
1660 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1661 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1662 | ||
1663 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1664 | int nr) | |
1665 | { | |
1666 | unsigned long offset = (unsigned long)c; | |
1667 | offset += offsetof(struct btrfs_chunk, stripe); | |
1668 | offset += nr * sizeof(struct btrfs_stripe); | |
1669 | return (struct btrfs_stripe *)offset; | |
1670 | } | |
1671 | ||
a443755f CM |
1672 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1673 | { | |
1674 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1675 | } | |
1676 | ||
0b86a832 CM |
1677 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1678 | struct btrfs_chunk *c, int nr) | |
1679 | { | |
1680 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1681 | } | |
1682 | ||
0b86a832 CM |
1683 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1684 | struct btrfs_chunk *c, int nr) | |
1685 | { | |
1686 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1687 | } | |
1688 | ||
5f39d397 CM |
1689 | /* struct btrfs_block_group_item */ |
1690 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1691 | used, 64); | |
1692 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1693 | used, 64); | |
0b86a832 CM |
1694 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1695 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1696 | |
1697 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1698 | struct btrfs_block_group_item, chunk_objectid, 64); |
1699 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1700 | struct btrfs_block_group_item, flags, 64); | |
1701 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1702 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1703 | |
208acb8c OS |
1704 | /* struct btrfs_free_space_info */ |
1705 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1706 | extent_count, 32); | |
1707 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1708 | ||
3954401f CM |
1709 | /* struct btrfs_inode_ref */ |
1710 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1711 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1712 | |
f186373f MF |
1713 | /* struct btrfs_inode_extref */ |
1714 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1715 | parent_objectid, 64); | |
1716 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1717 | name_len, 16); | |
1718 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1719 | ||
5f39d397 CM |
1720 | /* struct btrfs_inode_item */ |
1721 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1722 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1723 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1724 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1725 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1726 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1727 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1728 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1729 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1730 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1731 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1732 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1733 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1734 | generation, 64); | |
1735 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1736 | sequence, 64); | |
1737 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1738 | transid, 64); | |
1739 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1740 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1741 | nbytes, 64); | |
1742 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1743 | block_group, 64); | |
1744 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1745 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1746 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1747 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1748 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1749 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1750 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1751 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1752 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1753 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1754 | |
0b86a832 | 1755 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1756 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1757 | chunk_tree, 64); | |
1758 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1759 | chunk_objectid, 64); | |
1760 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1761 | chunk_offset, 64); | |
0b86a832 CM |
1762 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1763 | ||
231e88f4 | 1764 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
1765 | { |
1766 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 1767 | return (unsigned long)dev + ptr; |
e17cade2 CM |
1768 | } |
1769 | ||
5d4f98a2 YZ |
1770 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1771 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1772 | generation, 64); | |
1773 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1774 | |
5d4f98a2 YZ |
1775 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1776 | ||
1777 | ||
1778 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1779 | ||
1780 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1781 | struct btrfs_tree_block_info *item, | |
1782 | struct btrfs_disk_key *key) | |
1783 | { | |
1784 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1785 | } | |
1786 | ||
1787 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1788 | struct btrfs_tree_block_info *item, | |
1789 | struct btrfs_disk_key *key) | |
1790 | { | |
1791 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1792 | } | |
e20d96d6 | 1793 | |
5d4f98a2 YZ |
1794 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1795 | root, 64); | |
1796 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1797 | objectid, 64); | |
1798 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1799 | offset, 64); | |
1800 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1801 | count, 32); | |
1802 | ||
1803 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1804 | count, 32); | |
1805 | ||
1806 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1807 | type, 8); | |
1808 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1809 | offset, 64); | |
1810 | ||
1811 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1812 | { | |
1813 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1814 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1815 | return sizeof(struct btrfs_extent_inline_ref); | |
1816 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1817 | return sizeof(struct btrfs_shared_data_ref) + | |
1818 | sizeof(struct btrfs_extent_inline_ref); | |
1819 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1820 | return sizeof(struct btrfs_extent_data_ref) + | |
1821 | offsetof(struct btrfs_extent_inline_ref, offset); | |
5d4f98a2 YZ |
1822 | return 0; |
1823 | } | |
1824 | ||
1825 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1826 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1827 | generation, 64); | |
1828 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1829 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1830 | |
5f39d397 CM |
1831 | /* struct btrfs_node */ |
1832 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1833 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
1834 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
1835 | blockptr, 64); | |
1836 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
1837 | generation, 64); | |
e20d96d6 | 1838 | |
5f39d397 | 1839 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1840 | { |
5f39d397 CM |
1841 | unsigned long ptr; |
1842 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1843 | sizeof(struct btrfs_key_ptr) * nr; | |
1844 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1845 | } |
1846 | ||
5f39d397 CM |
1847 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1848 | int nr, u64 val) | |
cf27e1ee | 1849 | { |
5f39d397 CM |
1850 | unsigned long ptr; |
1851 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1852 | sizeof(struct btrfs_key_ptr) * nr; | |
1853 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1854 | } |
1855 | ||
74493f7a CM |
1856 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1857 | { | |
1858 | unsigned long ptr; | |
1859 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1860 | sizeof(struct btrfs_key_ptr) * nr; | |
1861 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1862 | } | |
1863 | ||
1864 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1865 | int nr, u64 val) | |
1866 | { | |
1867 | unsigned long ptr; | |
1868 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1869 | sizeof(struct btrfs_key_ptr) * nr; | |
1870 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1871 | } | |
1872 | ||
810191ff | 1873 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1874 | { |
5f39d397 CM |
1875 | return offsetof(struct btrfs_node, ptrs) + |
1876 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1877 | } |
1878 | ||
1cbb1f45 | 1879 | void btrfs_node_key(const struct extent_buffer *eb, |
e644d021 CM |
1880 | struct btrfs_disk_key *disk_key, int nr); |
1881 | ||
5f39d397 CM |
1882 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1883 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1884 | { |
5f39d397 CM |
1885 | unsigned long ptr; |
1886 | ptr = btrfs_node_key_ptr_offset(nr); | |
1887 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1888 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1889 | } |
1890 | ||
5f39d397 CM |
1891 | /* struct btrfs_item */ |
1892 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1893 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
1894 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
1895 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 1896 | |
5f39d397 | 1897 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1898 | { |
5f39d397 CM |
1899 | return offsetof(struct btrfs_leaf, items) + |
1900 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1901 | } |
1902 | ||
dd3cc16b | 1903 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 1904 | { |
5f39d397 | 1905 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1906 | } |
1907 | ||
1cbb1f45 | 1908 | static inline u32 btrfs_item_end(const struct extent_buffer *eb, |
5f39d397 | 1909 | struct btrfs_item *item) |
0783fcfc | 1910 | { |
5f39d397 | 1911 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1912 | } |
1913 | ||
1cbb1f45 | 1914 | static inline u32 btrfs_item_end_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1915 | { |
dd3cc16b | 1916 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1917 | } |
1918 | ||
1cbb1f45 | 1919 | static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1920 | { |
dd3cc16b | 1921 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1922 | } |
1923 | ||
1cbb1f45 | 1924 | static inline u32 btrfs_item_size_nr(const struct extent_buffer *eb, int nr) |
0783fcfc | 1925 | { |
dd3cc16b | 1926 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1927 | } |
1928 | ||
1cbb1f45 | 1929 | static inline void btrfs_item_key(const struct extent_buffer *eb, |
5f39d397 | 1930 | struct btrfs_disk_key *disk_key, int nr) |
1d4f6404 | 1931 | { |
dd3cc16b | 1932 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1933 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1934 | } |
1935 | ||
5f39d397 CM |
1936 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1937 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1938 | { |
dd3cc16b | 1939 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1940 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1941 | } |
1942 | ||
e02119d5 CM |
1943 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1944 | ||
0660b5af CM |
1945 | /* |
1946 | * struct btrfs_root_ref | |
1947 | */ | |
1948 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1949 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1950 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1951 | ||
5f39d397 | 1952 | /* struct btrfs_dir_item */ |
5103e947 | 1953 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1954 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1955 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1956 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
1957 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
1958 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
1959 | data_len, 16); | |
1960 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
1961 | name_len, 16); | |
1962 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
1963 | transid, 64); | |
1d4f6404 | 1964 | |
1cbb1f45 JM |
1965 | static inline void btrfs_dir_item_key(const struct extent_buffer *eb, |
1966 | const struct btrfs_dir_item *item, | |
5f39d397 | 1967 | struct btrfs_disk_key *key) |
1d4f6404 | 1968 | { |
5f39d397 | 1969 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1970 | } |
1971 | ||
5f39d397 CM |
1972 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1973 | struct btrfs_dir_item *item, | |
1cbb1f45 | 1974 | const struct btrfs_disk_key *key) |
a8a2ee0c | 1975 | { |
5f39d397 | 1976 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1977 | } |
1978 | ||
0af3d00b JB |
1979 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1980 | num_entries, 64); | |
1981 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1982 | num_bitmaps, 64); | |
1983 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1984 | generation, 64); | |
1985 | ||
1cbb1f45 JM |
1986 | static inline void btrfs_free_space_key(const struct extent_buffer *eb, |
1987 | const struct btrfs_free_space_header *h, | |
0af3d00b JB |
1988 | struct btrfs_disk_key *key) |
1989 | { | |
1990 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1991 | } | |
1992 | ||
1993 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1994 | struct btrfs_free_space_header *h, | |
1cbb1f45 | 1995 | const struct btrfs_disk_key *key) |
0af3d00b JB |
1996 | { |
1997 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1998 | } | |
1999 | ||
5f39d397 CM |
2000 | /* struct btrfs_disk_key */ |
2001 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2002 | objectid, 64); | |
2003 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2004 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2005 | |
e2fa7227 | 2006 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
310712b2 | 2007 | const struct btrfs_disk_key *disk) |
e2fa7227 CM |
2008 | { |
2009 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2010 | cpu->type = disk->type; |
e2fa7227 CM |
2011 | cpu->objectid = le64_to_cpu(disk->objectid); |
2012 | } | |
2013 | ||
2014 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
310712b2 | 2015 | const struct btrfs_key *cpu) |
e2fa7227 CM |
2016 | { |
2017 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2018 | disk->type = cpu->type; |
e2fa7227 CM |
2019 | disk->objectid = cpu_to_le64(cpu->objectid); |
2020 | } | |
2021 | ||
1cbb1f45 JM |
2022 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, |
2023 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2024 | { |
5f39d397 CM |
2025 | struct btrfs_disk_key disk_key; |
2026 | btrfs_node_key(eb, &disk_key, nr); | |
2027 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2028 | } |
2029 | ||
1cbb1f45 JM |
2030 | static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb, |
2031 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2032 | { |
5f39d397 CM |
2033 | struct btrfs_disk_key disk_key; |
2034 | btrfs_item_key(eb, &disk_key, nr); | |
2035 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2036 | } |
2037 | ||
1cbb1f45 JM |
2038 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, |
2039 | const struct btrfs_dir_item *item, | |
2040 | struct btrfs_key *key) | |
4d775673 | 2041 | { |
5f39d397 CM |
2042 | struct btrfs_disk_key disk_key; |
2043 | btrfs_dir_item_key(eb, item, &disk_key); | |
2044 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2045 | } |
2046 | ||
310712b2 | 2047 | static inline u8 btrfs_key_type(const struct btrfs_key *key) |
3768f368 | 2048 | { |
5f39d397 | 2049 | return key->type; |
3768f368 CM |
2050 | } |
2051 | ||
5f39d397 | 2052 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2053 | { |
5f39d397 | 2054 | key->type = val; |
3768f368 CM |
2055 | } |
2056 | ||
5f39d397 | 2057 | /* struct btrfs_header */ |
db94535d | 2058 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2059 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2060 | generation, 64); | |
2061 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2062 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2063 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2064 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2065 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2066 | generation, 64); | |
2067 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2068 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2069 | nritems, 32); | |
2070 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2071 | |
1cbb1f45 | 2072 | static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag) |
63b10fc4 CM |
2073 | { |
2074 | return (btrfs_header_flags(eb) & flag) == flag; | |
2075 | } | |
2076 | ||
2077 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2078 | { | |
2079 | u64 flags = btrfs_header_flags(eb); | |
2080 | btrfs_set_header_flags(eb, flags | flag); | |
2081 | return (flags & flag) == flag; | |
2082 | } | |
2083 | ||
2084 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2085 | { | |
2086 | u64 flags = btrfs_header_flags(eb); | |
2087 | btrfs_set_header_flags(eb, flags & ~flag); | |
2088 | return (flags & flag) == flag; | |
2089 | } | |
2090 | ||
1cbb1f45 | 2091 | static inline int btrfs_header_backref_rev(const struct extent_buffer *eb) |
5d4f98a2 YZ |
2092 | { |
2093 | u64 flags = btrfs_header_flags(eb); | |
2094 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2095 | } | |
2096 | ||
2097 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2098 | int rev) | |
2099 | { | |
2100 | u64 flags = btrfs_header_flags(eb); | |
2101 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2102 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2103 | btrfs_set_header_flags(eb, flags); | |
2104 | } | |
2105 | ||
0a4e5586 | 2106 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2107 | { |
fba6aa75 | 2108 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2109 | } |
2110 | ||
1cbb1f45 | 2111 | static inline unsigned long btrfs_header_chunk_tree_uuid(const struct extent_buffer *eb) |
e17cade2 | 2112 | { |
b308bc2f | 2113 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2114 | } |
2115 | ||
1cbb1f45 | 2116 | static inline int btrfs_is_leaf(const struct extent_buffer *eb) |
3768f368 | 2117 | { |
d397712b | 2118 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2119 | } |
2120 | ||
5f39d397 | 2121 | /* struct btrfs_root_item */ |
84234f3a YZ |
2122 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2123 | generation, 64); | |
5f39d397 | 2124 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2125 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2126 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2127 | |
84234f3a YZ |
2128 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2129 | generation, 64); | |
db94535d CM |
2130 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2131 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2132 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2133 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2134 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2135 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2136 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2137 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2138 | last_snapshot, 64); | |
8ea05e3a AB |
2139 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2140 | generation_v2, 64); | |
2141 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2142 | ctransid, 64); | |
2143 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2144 | otransid, 64); | |
2145 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2146 | stransid, 64); | |
2147 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2148 | rtransid, 64); | |
123abc88 | 2149 | |
1cbb1f45 | 2150 | static inline bool btrfs_root_readonly(const struct btrfs_root *root) |
b83cc969 | 2151 | { |
6ed3cf2c | 2152 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2153 | } |
2154 | ||
1cbb1f45 | 2155 | static inline bool btrfs_root_dead(const struct btrfs_root *root) |
521e0546 DS |
2156 | { |
2157 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2158 | } | |
2159 | ||
af31f5e5 CM |
2160 | /* struct btrfs_root_backup */ |
2161 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2162 | tree_root, 64); | |
2163 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2164 | tree_root_gen, 64); | |
2165 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2166 | tree_root_level, 8); | |
2167 | ||
2168 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2169 | chunk_root, 64); | |
2170 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2171 | chunk_root_gen, 64); | |
2172 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2173 | chunk_root_level, 8); | |
2174 | ||
2175 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2176 | extent_root, 64); | |
2177 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2178 | extent_root_gen, 64); | |
2179 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2180 | extent_root_level, 8); | |
2181 | ||
2182 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2183 | fs_root, 64); | |
2184 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2185 | fs_root_gen, 64); | |
2186 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2187 | fs_root_level, 8); | |
2188 | ||
2189 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2190 | dev_root, 64); | |
2191 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2192 | dev_root_gen, 64); | |
2193 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2194 | dev_root_level, 8); | |
2195 | ||
2196 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2197 | csum_root, 64); | |
2198 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2199 | csum_root_gen, 64); | |
2200 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2201 | csum_root_level, 8); | |
2202 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2203 | total_bytes, 64); | |
2204 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2205 | bytes_used, 64); | |
2206 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2207 | num_devices, 64); | |
2208 | ||
0940ebf6 ID |
2209 | /* struct btrfs_balance_item */ |
2210 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2211 | |
1cbb1f45 JM |
2212 | static inline void btrfs_balance_data(const struct extent_buffer *eb, |
2213 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2214 | struct btrfs_disk_balance_args *ba) |
2215 | { | |
2216 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2217 | } | |
2218 | ||
2219 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
1cbb1f45 JM |
2220 | struct btrfs_balance_item *bi, |
2221 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2222 | { |
2223 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2224 | } | |
2225 | ||
1cbb1f45 JM |
2226 | static inline void btrfs_balance_meta(const struct extent_buffer *eb, |
2227 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2228 | struct btrfs_disk_balance_args *ba) |
2229 | { | |
2230 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2231 | } | |
2232 | ||
2233 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
1cbb1f45 JM |
2234 | struct btrfs_balance_item *bi, |
2235 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2236 | { |
2237 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2238 | } | |
2239 | ||
1cbb1f45 JM |
2240 | static inline void btrfs_balance_sys(const struct extent_buffer *eb, |
2241 | const struct btrfs_balance_item *bi, | |
0940ebf6 ID |
2242 | struct btrfs_disk_balance_args *ba) |
2243 | { | |
2244 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2245 | } | |
2246 | ||
2247 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
1cbb1f45 JM |
2248 | struct btrfs_balance_item *bi, |
2249 | const struct btrfs_disk_balance_args *ba) | |
0940ebf6 ID |
2250 | { |
2251 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2252 | } | |
2253 | ||
2254 | static inline void | |
2255 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
1cbb1f45 | 2256 | const struct btrfs_disk_balance_args *disk) |
0940ebf6 ID |
2257 | { |
2258 | memset(cpu, 0, sizeof(*cpu)); | |
2259 | ||
2260 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2261 | cpu->usage = le64_to_cpu(disk->usage); | |
2262 | cpu->devid = le64_to_cpu(disk->devid); | |
2263 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2264 | cpu->pend = le64_to_cpu(disk->pend); | |
2265 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2266 | cpu->vend = le64_to_cpu(disk->vend); | |
2267 | cpu->target = le64_to_cpu(disk->target); | |
2268 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2269 | cpu->limit = le64_to_cpu(disk->limit); |
ed0df618 DS |
2270 | cpu->stripes_min = le32_to_cpu(disk->stripes_min); |
2271 | cpu->stripes_max = le32_to_cpu(disk->stripes_max); | |
0940ebf6 ID |
2272 | } |
2273 | ||
2274 | static inline void | |
2275 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
1cbb1f45 | 2276 | const struct btrfs_balance_args *cpu) |
0940ebf6 ID |
2277 | { |
2278 | memset(disk, 0, sizeof(*disk)); | |
2279 | ||
2280 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2281 | disk->usage = cpu_to_le64(cpu->usage); | |
2282 | disk->devid = cpu_to_le64(cpu->devid); | |
2283 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2284 | disk->pend = cpu_to_le64(cpu->pend); | |
2285 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2286 | disk->vend = cpu_to_le64(cpu->vend); | |
2287 | disk->target = cpu_to_le64(cpu->target); | |
2288 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2289 | disk->limit = cpu_to_le64(cpu->limit); |
ed0df618 DS |
2290 | disk->stripes_min = cpu_to_le32(cpu->stripes_min); |
2291 | disk->stripes_max = cpu_to_le32(cpu->stripes_max); | |
0940ebf6 ID |
2292 | } |
2293 | ||
2294 | /* struct btrfs_super_block */ | |
db94535d | 2295 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2296 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2297 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2298 | generation, 64); | |
2299 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2300 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2301 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2302 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2303 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2304 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2305 | root_level, 8); | |
0b86a832 CM |
2306 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2307 | chunk_root, 64); | |
2308 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2309 | chunk_root_level, 8); |
2310 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2311 | log_root, 64); | |
c3027eb5 CM |
2312 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2313 | log_root_transid, 64); | |
e02119d5 CM |
2314 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2315 | log_root_level, 8); | |
db94535d CM |
2316 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2317 | total_bytes, 64); | |
2318 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2319 | bytes_used, 64); | |
5f39d397 CM |
2320 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2321 | sectorsize, 32); | |
2322 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2323 | nodesize, 32); | |
87ee04eb CM |
2324 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2325 | stripesize, 32); | |
5f39d397 CM |
2326 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2327 | root_dir_objectid, 64); | |
8a4b83cc CM |
2328 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2329 | num_devices, 64); | |
f2b636e8 JB |
2330 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2331 | compat_flags, 64); | |
2332 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2333 | compat_ro_flags, 64); |
f2b636e8 JB |
2334 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2335 | incompat_flags, 64); | |
607d432d JB |
2336 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2337 | csum_type, 16); | |
0af3d00b JB |
2338 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2339 | cache_generation, 64); | |
3cae210f | 2340 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2341 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2342 | uuid_tree_generation, 64); | |
607d432d | 2343 | |
1cbb1f45 | 2344 | static inline int btrfs_super_csum_size(const struct btrfs_super_block *s) |
607d432d | 2345 | { |
1104a885 DS |
2346 | u16 t = btrfs_super_csum_type(s); |
2347 | /* | |
2348 | * csum type is validated at mount time | |
2349 | */ | |
607d432d JB |
2350 | return btrfs_csum_sizes[t]; |
2351 | } | |
2e635a27 | 2352 | |
2e635a27 | 2353 | |
851cd173 LB |
2354 | /* |
2355 | * The leaf data grows from end-to-front in the node. | |
2356 | * this returns the address of the start of the last item, | |
2357 | * which is the stop of the leaf data stack | |
2358 | */ | |
1cbb1f45 JM |
2359 | static inline unsigned int leaf_data_end(const struct btrfs_fs_info *fs_info, |
2360 | const struct extent_buffer *leaf) | |
851cd173 LB |
2361 | { |
2362 | u32 nr = btrfs_header_nritems(leaf); | |
2363 | ||
2364 | if (nr == 0) | |
0b246afa | 2365 | return BTRFS_LEAF_DATA_SIZE(fs_info); |
851cd173 LB |
2366 | return btrfs_item_offset_nr(leaf, nr - 1); |
2367 | } | |
2368 | ||
5f39d397 CM |
2369 | /* struct btrfs_file_extent_item */ |
2370 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2371 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2372 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2373 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2374 | struct btrfs_file_extent_item, offset, 64); | |
2375 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2376 | struct btrfs_file_extent_item, generation, 64); | |
2377 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2378 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2379 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2380 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2381 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2382 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2383 | |
d397712b | 2384 | static inline unsigned long |
1cbb1f45 | 2385 | btrfs_file_extent_inline_start(const struct btrfs_file_extent_item *e) |
236454df | 2386 | { |
7ec20afb | 2387 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2388 | } |
2389 | ||
2390 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2391 | { | |
7ec20afb | 2392 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2393 | } |
2394 | ||
db94535d CM |
2395 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2396 | disk_bytenr, 64); | |
5f39d397 CM |
2397 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2398 | generation, 64); | |
db94535d CM |
2399 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2400 | disk_num_bytes, 64); | |
5f39d397 CM |
2401 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2402 | offset, 64); | |
db94535d CM |
2403 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2404 | num_bytes, 64); | |
c8b97818 CM |
2405 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2406 | ram_bytes, 64); | |
2407 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2408 | compression, 8); | |
2409 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2410 | encryption, 8); | |
2411 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2412 | other_encoding, 16); | |
2413 | ||
c8b97818 CM |
2414 | /* |
2415 | * this returns the number of bytes used by the item on disk, minus the | |
2416 | * size of any extent headers. If a file is compressed on disk, this is | |
2417 | * the compressed size | |
2418 | */ | |
1cbb1f45 JM |
2419 | static inline u32 btrfs_file_extent_inline_item_len( |
2420 | const struct extent_buffer *eb, | |
2421 | struct btrfs_item *e) | |
c8b97818 | 2422 | { |
7ec20afb | 2423 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2424 | } |
9f5fae2f | 2425 | |
733f4fbb | 2426 | /* btrfs_dev_stats_item */ |
1cbb1f45 JM |
2427 | static inline u64 btrfs_dev_stats_value(const struct extent_buffer *eb, |
2428 | const struct btrfs_dev_stats_item *ptr, | |
733f4fbb SB |
2429 | int index) |
2430 | { | |
2431 | u64 val; | |
2432 | ||
2433 | read_extent_buffer(eb, &val, | |
2434 | offsetof(struct btrfs_dev_stats_item, values) + | |
2435 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2436 | sizeof(val)); | |
2437 | return val; | |
2438 | } | |
2439 | ||
2440 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2441 | struct btrfs_dev_stats_item *ptr, | |
2442 | int index, u64 val) | |
2443 | { | |
2444 | write_extent_buffer(eb, &val, | |
2445 | offsetof(struct btrfs_dev_stats_item, values) + | |
2446 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2447 | sizeof(val)); | |
2448 | } | |
2449 | ||
630dc772 AJ |
2450 | /* btrfs_qgroup_status_item */ |
2451 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2452 | generation, 64); | |
2453 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2454 | version, 64); | |
2455 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2456 | flags, 64); | |
2f232036 JS |
2457 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2458 | rescan, 64); | |
630dc772 AJ |
2459 | |
2460 | /* btrfs_qgroup_info_item */ | |
2461 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2462 | generation, 64); | |
2463 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2464 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2465 | rfer_cmpr, 64); | |
2466 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2467 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2468 | excl_cmpr, 64); | |
2469 | ||
2470 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2471 | struct btrfs_qgroup_info_item, generation, 64); | |
2472 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2473 | rfer, 64); | |
2474 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2475 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2476 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2477 | excl, 64); | |
2478 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2479 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2480 | ||
2481 | /* btrfs_qgroup_limit_item */ | |
2482 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2483 | flags, 64); | |
2484 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2485 | max_rfer, 64); | |
2486 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2487 | max_excl, 64); | |
2488 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2489 | rsv_rfer, 64); | |
2490 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2491 | rsv_excl, 64); | |
2492 | ||
a2bff640 SB |
2493 | /* btrfs_dev_replace_item */ |
2494 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2495 | struct btrfs_dev_replace_item, src_devid, 64); | |
2496 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2497 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2498 | 64); | |
2499 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2500 | replace_state, 64); | |
2501 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2502 | time_started, 64); | |
2503 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2504 | time_stopped, 64); | |
2505 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2506 | num_write_errors, 64); | |
2507 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2508 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2509 | 64); | |
2510 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2511 | cursor_left, 64); | |
2512 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2513 | cursor_right, 64); | |
2514 | ||
2515 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2516 | struct btrfs_dev_replace_item, src_devid, 64); | |
2517 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2518 | struct btrfs_dev_replace_item, | |
2519 | cont_reading_from_srcdev_mode, 64); | |
2520 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2521 | struct btrfs_dev_replace_item, replace_state, 64); | |
2522 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2523 | struct btrfs_dev_replace_item, time_started, 64); | |
2524 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2525 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2526 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2527 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2528 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2529 | struct btrfs_dev_replace_item, | |
2530 | num_uncorrectable_read_errors, 64); | |
2531 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2532 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2533 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2534 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2535 | ||
4beb1b8b CM |
2536 | /* helper function to cast into the data area of the leaf. */ |
2537 | #define btrfs_item_ptr(leaf, slot, type) \ | |
3d9ec8c4 | 2538 | ((type *)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 CM |
2539 | btrfs_item_offset_nr(leaf, slot))) |
2540 | ||
2541 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
3d9ec8c4 | 2542 | ((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 | 2543 | btrfs_item_offset_nr(leaf, slot))) |
4beb1b8b | 2544 | |
9678c543 NB |
2545 | static inline u64 btrfs_name_hash(const char *name, int len) |
2546 | { | |
2547 | return crc32c((u32)~1, name, len); | |
2548 | } | |
2549 | ||
2550 | /* | |
2551 | * Figure the key offset of an extended inode ref | |
2552 | */ | |
2553 | static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name, | |
2554 | int len) | |
2555 | { | |
2556 | return (u64) crc32c(parent_objectid, name, len); | |
2557 | } | |
2558 | ||
67377734 JB |
2559 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2560 | { | |
2561 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2562 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2563 | } | |
2564 | ||
3b16a4e3 JB |
2565 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2566 | { | |
c62d2555 | 2567 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2568 | } |
2569 | ||
b18c6685 | 2570 | /* extent-tree.c */ |
28f75a0e | 2571 | |
167ce953 LB |
2572 | enum btrfs_inline_ref_type { |
2573 | BTRFS_REF_TYPE_INVALID = 0, | |
2574 | BTRFS_REF_TYPE_BLOCK = 1, | |
2575 | BTRFS_REF_TYPE_DATA = 2, | |
2576 | BTRFS_REF_TYPE_ANY = 3, | |
2577 | }; | |
2578 | ||
2579 | int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb, | |
2580 | struct btrfs_extent_inline_ref *iref, | |
2581 | enum btrfs_inline_ref_type is_data); | |
2582 | ||
2ff7e61e | 2583 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_fs_info *fs_info, u64 csum_bytes); |
28f75a0e | 2584 | |
27965b6c | 2585 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_fs_info *fs_info, |
9e0baf60 | 2586 | unsigned num_items) |
16cdcec7 | 2587 | { |
70e7af24 | 2588 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2589 | } |
2590 | ||
2591 | /* | |
2592 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2593 | * COW. | |
2594 | */ | |
27965b6c | 2595 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info, |
07127184 JB |
2596 | unsigned num_items) |
2597 | { | |
70e7af24 | 2598 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2599 | } |
2600 | ||
7c861627 | 2601 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans); |
af9b8a0e | 2602 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans); |
9cfa3e34 FM |
2603 | void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, |
2604 | const u64 start); | |
2605 | void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); | |
f78c436c FM |
2606 | bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
2607 | void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); | |
2608 | void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg); | |
fa9c0d79 | 2609 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 | 2610 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
c79a70b1 | 2611 | unsigned long count); |
2ff7e61e | 2612 | int btrfs_async_run_delayed_refs(struct btrfs_fs_info *fs_info, |
31b9655f | 2613 | unsigned long count, u64 transid, int wait); |
2ff7e61e | 2614 | int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len); |
a22285a6 | 2615 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2ff7e61e | 2616 | struct btrfs_fs_info *fs_info, u64 bytenr, |
3173a18f | 2617 | u64 offset, int metadata, u64 *refs, u64 *flags); |
2ff7e61e | 2618 | int btrfs_pin_extent(struct btrfs_fs_info *fs_info, |
11833d66 | 2619 | u64 bytenr, u64 num, int reserved); |
2ff7e61e | 2620 | int btrfs_pin_extent_for_log_replay(struct btrfs_fs_info *fs_info, |
e688b725 | 2621 | u64 bytenr, u64 num_bytes); |
2ff7e61e | 2622 | int btrfs_exclude_logged_extents(struct btrfs_fs_info *fs_info, |
8c2a1a30 | 2623 | struct extent_buffer *eb); |
e4c3b2dc | 2624 | int btrfs_cross_ref_exist(struct btrfs_root *root, |
5d4f98a2 | 2625 | u64 objectid, u64 offset, u64 bytenr); |
d397712b CM |
2626 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2627 | struct btrfs_fs_info *info, | |
2628 | u64 bytenr); | |
758f2dfc | 2629 | void btrfs_get_block_group(struct btrfs_block_group_cache *cache); |
5d4f98a2 | 2630 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
4d75f8a9 | 2631 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
310712b2 OS |
2632 | struct btrfs_root *root, |
2633 | u64 parent, u64 root_objectid, | |
2634 | const struct btrfs_disk_key *key, | |
2635 | int level, u64 hint, | |
2636 | u64 empty_size); | |
f0486c68 YZ |
2637 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2638 | struct btrfs_root *root, | |
2639 | struct extent_buffer *buf, | |
5581a51a | 2640 | u64 parent, int last_ref); |
5d4f98a2 | 2641 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2642 | struct btrfs_root *root, u64 owner, |
5846a3c2 QW |
2643 | u64 offset, u64 ram_bytes, |
2644 | struct btrfs_key *ins); | |
5d4f98a2 | 2645 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2646 | u64 root_objectid, u64 owner, u64 offset, |
2647 | struct btrfs_key *ins); | |
18513091 | 2648 | int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, |
00361589 | 2649 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
e570fd27 | 2650 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2651 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2652 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2653 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2654 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2655 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2ff7e61e | 2656 | struct btrfs_fs_info *fs_info, |
5d4f98a2 | 2657 | u64 bytenr, u64 num_bytes, u64 flags, |
b1c79e09 | 2658 | int level, int is_data); |
31840ae1 | 2659 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2660 | struct btrfs_root *root, |
66d7e7f0 | 2661 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
b06c4bf5 | 2662 | u64 owner, u64 offset); |
5d4f98a2 | 2663 | |
2ff7e61e JM |
2664 | int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info, |
2665 | u64 start, u64 len, int delalloc); | |
2666 | int btrfs_free_and_pin_reserved_extent(struct btrfs_fs_info *fs_info, | |
e688b725 | 2667 | u64 start, u64 len); |
8b74c03e | 2668 | void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info); |
5ead2dd0 | 2669 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans); |
b18c6685 | 2670 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
84f7d8e6 | 2671 | struct btrfs_root *root, |
31840ae1 | 2672 | u64 bytenr, u64 num_bytes, u64 parent, |
b06c4bf5 | 2673 | u64 root_objectid, u64 owner, u64 offset); |
5d4f98a2 | 2674 | |
21217054 | 2675 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans); |
9078a3e1 | 2676 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2ff7e61e | 2677 | struct btrfs_fs_info *fs_info); |
dcdf7f6d | 2678 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
2ff7e61e JM |
2679 | struct btrfs_fs_info *fs_info); |
2680 | int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr); | |
9078a3e1 | 2681 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
5b4aacef | 2682 | int btrfs_read_block_groups(struct btrfs_fs_info *info); |
6bccf3ab | 2683 | int btrfs_can_relocate(struct btrfs_fs_info *fs_info, u64 bytenr); |
0b86a832 | 2684 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
e7e02096 NB |
2685 | u64 bytes_used, u64 type, u64 chunk_offset, |
2686 | u64 size); | |
75cb379d | 2687 | void btrfs_add_raid_kobjects(struct btrfs_fs_info *fs_info); |
8eab77ff | 2688 | struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( |
7fd01182 FM |
2689 | struct btrfs_fs_info *fs_info, |
2690 | const u64 chunk_offset); | |
1a40e23b | 2691 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
5a98ec01 | 2692 | u64 group_start, struct extent_map *em); |
47ab2a6c | 2693 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
e33e17ee JM |
2694 | void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); |
2695 | void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); | |
6c686b35 | 2696 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans); |
1b86826d JM |
2697 | u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info); |
2698 | u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info); | |
2699 | u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info); | |
4184ea7f | 2700 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
2701 | |
2702 | enum btrfs_reserve_flush_enum { | |
2703 | /* If we are in the transaction, we can't flush anything.*/ | |
2704 | BTRFS_RESERVE_NO_FLUSH, | |
2705 | /* | |
2706 | * Flushing delalloc may cause deadlock somewhere, in this | |
2707 | * case, use FLUSH LIMIT | |
2708 | */ | |
2709 | BTRFS_RESERVE_FLUSH_LIMIT, | |
2710 | BTRFS_RESERVE_FLUSH_ALL, | |
2711 | }; | |
2712 | ||
f376df2b JB |
2713 | enum btrfs_flush_state { |
2714 | FLUSH_DELAYED_ITEMS_NR = 1, | |
2715 | FLUSH_DELAYED_ITEMS = 2, | |
2716 | FLUSH_DELALLOC = 3, | |
2717 | FLUSH_DELALLOC_WAIT = 4, | |
2718 | ALLOC_CHUNK = 5, | |
2719 | COMMIT_TRANS = 6, | |
2720 | }; | |
2721 | ||
04f4f916 | 2722 | int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes); |
364ecf36 QW |
2723 | int btrfs_check_data_free_space(struct inode *inode, |
2724 | struct extent_changeset **reserved, u64 start, u64 len); | |
bc42bda2 QW |
2725 | void btrfs_free_reserved_data_space(struct inode *inode, |
2726 | struct extent_changeset *reserved, u64 start, u64 len); | |
2727 | void btrfs_delalloc_release_space(struct inode *inode, | |
43b18595 QW |
2728 | struct extent_changeset *reserved, |
2729 | u64 start, u64 len, bool qgroup_free); | |
51773bec QW |
2730 | void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, |
2731 | u64 len); | |
4fbcdf66 | 2732 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
d5c12070 MX |
2733 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2734 | struct btrfs_block_rsv *rsv, | |
c4c129db | 2735 | int nitems, bool use_global_rsv); |
2ff7e61e | 2736 | void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info, |
7775c818 | 2737 | struct btrfs_block_rsv *rsv); |
43b18595 QW |
2738 | void btrfs_delalloc_release_extents(struct btrfs_inode *inode, u64 num_bytes, |
2739 | bool qgroup_free); | |
8b62f87b | 2740 | |
9f3db423 | 2741 | int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes); |
43b18595 QW |
2742 | void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes, |
2743 | bool qgroup_free); | |
364ecf36 QW |
2744 | int btrfs_delalloc_reserve_space(struct inode *inode, |
2745 | struct extent_changeset **reserved, u64 start, u64 len); | |
66d8f3dd | 2746 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
2ff7e61e | 2747 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info, |
66d8f3dd | 2748 | unsigned short type); |
69fe2d75 JB |
2749 | void btrfs_init_metadata_block_rsv(struct btrfs_fs_info *fs_info, |
2750 | struct btrfs_block_rsv *rsv, | |
2751 | unsigned short type); | |
2ff7e61e | 2752 | void btrfs_free_block_rsv(struct btrfs_fs_info *fs_info, |
f0486c68 | 2753 | struct btrfs_block_rsv *rsv); |
4a92b1b8 | 2754 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
2755 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
2756 | enum btrfs_reserve_flush_enum flush); | |
2ff7e61e | 2757 | int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_factor); |
36ba022a | 2758 | int btrfs_block_rsv_refill(struct btrfs_root *root, |
08e007d2 MX |
2759 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
2760 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 | 2761 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
25d609f8 | 2762 | struct btrfs_block_rsv *dst_rsv, u64 num_bytes, |
3a584174 | 2763 | bool update_size); |
d52be818 JB |
2764 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
2765 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
2766 | int min_factor); | |
2ff7e61e | 2767 | void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info, |
f0486c68 YZ |
2768 | struct btrfs_block_rsv *block_rsv, |
2769 | u64 num_bytes); | |
c83488af | 2770 | int btrfs_inc_block_group_ro(struct btrfs_block_group_cache *cache); |
2ff7e61e | 2771 | void btrfs_dec_block_group_ro(struct btrfs_block_group_cache *cache); |
0af3d00b | 2772 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2773 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
2ff7e61e | 2774 | int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, |
acce952b | 2775 | u64 start, u64 end); |
2ff7e61e | 2776 | int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, |
1edb647b | 2777 | u64 num_bytes, u64 *actual_bytes); |
43a7e99d | 2778 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, u64 type); |
2ff7e61e | 2779 | int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range); |
acce952b | 2780 | |
c59021f8 | 2781 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2782 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2783 | struct btrfs_fs_info *fs_info); | |
ea14b57f DS |
2784 | int btrfs_start_write_no_snapshotting(struct btrfs_root *root); |
2785 | void btrfs_end_write_no_snapshotting(struct btrfs_root *root); | |
0bc19f90 | 2786 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
451a2c13 | 2787 | void check_system_chunk(struct btrfs_trans_handle *trans, const u64 type); |
a5ed9182 | 2788 | u64 add_new_free_space(struct btrfs_block_group_cache *block_group, |
4457c1c7 | 2789 | u64 start, u64 end); |
031f24da | 2790 | void btrfs_mark_bg_unused(struct btrfs_block_group_cache *bg); |
a5ed9182 | 2791 | |
dee26a9f | 2792 | /* ctree.c */ |
310712b2 | 2793 | int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key, |
5d4f98a2 | 2794 | int level, int *slot); |
310712b2 | 2795 | int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2); |
0b86a832 CM |
2796 | int btrfs_previous_item(struct btrfs_root *root, |
2797 | struct btrfs_path *path, u64 min_objectid, | |
2798 | int type); | |
ade2e0b3 WS |
2799 | int btrfs_previous_extent_item(struct btrfs_root *root, |
2800 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
2801 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
2802 | struct btrfs_path *path, | |
310712b2 | 2803 | const struct btrfs_key *new_key); |
925baedd CM |
2804 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2805 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
84f7d8e6 | 2806 | struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root); |
e7a84565 | 2807 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 2808 | struct btrfs_key *key, int lowest_level, |
de78b51a | 2809 | u64 min_trans); |
3f157a2f | 2810 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 2811 | struct btrfs_path *path, |
3f157a2f | 2812 | u64 min_trans); |
7069830a AB |
2813 | enum btrfs_compare_tree_result { |
2814 | BTRFS_COMPARE_TREE_NEW, | |
2815 | BTRFS_COMPARE_TREE_DELETED, | |
2816 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 2817 | BTRFS_COMPARE_TREE_SAME, |
7069830a | 2818 | }; |
ee8c494f | 2819 | typedef int (*btrfs_changed_cb_t)(struct btrfs_path *left_path, |
7069830a AB |
2820 | struct btrfs_path *right_path, |
2821 | struct btrfs_key *key, | |
2822 | enum btrfs_compare_tree_result result, | |
2823 | void *ctx); | |
2824 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
2825 | struct btrfs_root *right_root, | |
2826 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
2827 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2828 | struct btrfs_root *root, struct extent_buffer *buf, | |
2829 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2830 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2831 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2832 | struct btrfs_root *root, | |
2833 | struct extent_buffer *buf, | |
2834 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2835 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2836 | struct extent_buffer *buf); | |
2ff7e61e | 2837 | void btrfs_extend_item(struct btrfs_fs_info *fs_info, struct btrfs_path *path, |
143bede5 | 2838 | u32 data_size); |
2ff7e61e JM |
2839 | void btrfs_truncate_item(struct btrfs_fs_info *fs_info, |
2840 | struct btrfs_path *path, u32 new_size, int from_end); | |
459931ec CM |
2841 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2842 | struct btrfs_root *root, | |
2843 | struct btrfs_path *path, | |
310712b2 | 2844 | const struct btrfs_key *new_key, |
459931ec | 2845 | unsigned long split_offset); |
ad48fd75 YZ |
2846 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2847 | struct btrfs_root *root, | |
2848 | struct btrfs_path *path, | |
310712b2 | 2849 | const struct btrfs_key *new_key); |
e33d5c3d KN |
2850 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
2851 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
310712b2 OS |
2852 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2853 | const struct btrfs_key *key, struct btrfs_path *p, | |
2854 | int ins_len, int cow); | |
2855 | int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key, | |
5d9e75c4 | 2856 | struct btrfs_path *p, u64 time_seq); |
2f38b3e1 | 2857 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
310712b2 OS |
2858 | const struct btrfs_key *key, |
2859 | struct btrfs_path *p, int find_higher, | |
2860 | int return_any); | |
6702ed49 | 2861 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2862 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 2863 | int start_slot, u64 *last_ret, |
a6b6e75e | 2864 | struct btrfs_key *progress); |
b3b4aa74 | 2865 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2866 | struct btrfs_path *btrfs_alloc_path(void); |
2867 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2868 | void btrfs_set_path_blocking(struct btrfs_path *p); |
b4ce94de CM |
2869 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2870 | ||
85e21bac CM |
2871 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2872 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2873 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2874 | struct btrfs_root *root, | |
2875 | struct btrfs_path *path) | |
2876 | { | |
2877 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2878 | } | |
2879 | ||
afe5fea7 | 2880 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
310712b2 | 2881 | const struct btrfs_key *cpu_key, u32 *data_size, |
143bede5 | 2882 | u32 total_data, u32 total_size, int nr); |
310712b2 OS |
2883 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2884 | const struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2885 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2886 | struct btrfs_root *root, | |
2887 | struct btrfs_path *path, | |
310712b2 OS |
2888 | const struct btrfs_key *cpu_key, u32 *data_size, |
2889 | int nr); | |
9c58309d CM |
2890 | |
2891 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2892 | struct btrfs_root *root, | |
2893 | struct btrfs_path *path, | |
310712b2 | 2894 | const struct btrfs_key *key, |
9c58309d CM |
2895 | u32 data_size) |
2896 | { | |
2897 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2898 | } | |
2899 | ||
234b63a0 | 2900 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 2901 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2902 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2903 | u64 time_seq); | |
1c8f52a5 AB |
2904 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2905 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2906 | { |
2907 | ++p->slots[0]; | |
2908 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2909 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2910 | return 0; |
2911 | } | |
1c8f52a5 AB |
2912 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2913 | { | |
2914 | return btrfs_next_old_item(root, p, 0); | |
2915 | } | |
2ff7e61e JM |
2916 | int btrfs_leaf_free_space(struct btrfs_fs_info *fs_info, |
2917 | struct extent_buffer *leaf); | |
2c536799 JM |
2918 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
2919 | struct btrfs_block_rsv *block_rsv, | |
2920 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
2921 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2922 | struct btrfs_root *root, | |
2923 | struct extent_buffer *node, | |
2924 | struct extent_buffer *parent); | |
7841cb28 DS |
2925 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2926 | { | |
2927 | /* | |
afcdd129 | 2928 | * Do it this way so we only ever do one test_bit in the normal case. |
7841cb28 | 2929 | */ |
afcdd129 JB |
2930 | if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) { |
2931 | if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags)) | |
2932 | return 2; | |
2933 | return 1; | |
2934 | } | |
2935 | return 0; | |
7841cb28 | 2936 | } |
babbf170 MX |
2937 | |
2938 | /* | |
2939 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
2940 | * anything except sleeping. This function is used to check the status of | |
2941 | * the fs. | |
2942 | */ | |
2ff7e61e | 2943 | static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info) |
babbf170 | 2944 | { |
1751e8a6 | 2945 | return fs_info->sb->s_flags & SB_RDONLY || btrfs_fs_closing(fs_info); |
babbf170 MX |
2946 | } |
2947 | ||
6c41761f DS |
2948 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
2949 | { | |
837d5b6e | 2950 | kfree(fs_info->balance_ctl); |
6c41761f DS |
2951 | kfree(fs_info->delayed_root); |
2952 | kfree(fs_info->extent_root); | |
2953 | kfree(fs_info->tree_root); | |
2954 | kfree(fs_info->chunk_root); | |
2955 | kfree(fs_info->dev_root); | |
2956 | kfree(fs_info->csum_root); | |
bcef60f2 | 2957 | kfree(fs_info->quota_root); |
d8f98039 | 2958 | kfree(fs_info->uuid_root); |
70f6d82e | 2959 | kfree(fs_info->free_space_root); |
6c41761f DS |
2960 | kfree(fs_info->super_copy); |
2961 | kfree(fs_info->super_for_commit); | |
f667aef6 | 2962 | security_free_mnt_opts(&fs_info->security_opts); |
a8fd1f71 | 2963 | kvfree(fs_info); |
6c41761f | 2964 | } |
7841cb28 | 2965 | |
097b8a7c JS |
2966 | /* tree mod log functions from ctree.c */ |
2967 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2968 | struct seq_list *elem); | |
2969 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2970 | struct seq_list *elem); | |
5b6602e7 | 2971 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 2972 | |
dee26a9f | 2973 | /* root-item.c */ |
6025c19f LF |
2974 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, u64 root_id, |
2975 | u64 ref_id, u64 dirid, u64 sequence, const char *name, | |
2976 | int name_len); | |
3ee1c553 LF |
2977 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, u64 root_id, |
2978 | u64 ref_id, u64 dirid, u64 *sequence, const char *name, | |
2979 | int name_len); | |
1cd5447e | 2980 | int btrfs_del_root(struct btrfs_trans_handle *trans, |
ab9ce7d4 | 2981 | const struct btrfs_key *key); |
310712b2 OS |
2982 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2983 | const struct btrfs_key *key, | |
2984 | struct btrfs_root_item *item); | |
b45a9d8b JM |
2985 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
2986 | struct btrfs_root *root, | |
2987 | struct btrfs_key *key, | |
2988 | struct btrfs_root_item *item); | |
310712b2 | 2989 | int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key, |
cb517eab MX |
2990 | struct btrfs_path *path, struct btrfs_root_item *root_item, |
2991 | struct btrfs_key *root_key); | |
6bccf3ab | 2992 | int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info); |
bf5f32ec MF |
2993 | void btrfs_set_root_node(struct btrfs_root_item *item, |
2994 | struct extent_buffer *node); | |
08fe4db1 | 2995 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
2996 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
2997 | struct btrfs_root *root); | |
08fe4db1 | 2998 | |
07b30a49 | 2999 | /* uuid-tree.c */ |
cdb345a8 | 3000 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 3001 | u64 subid); |
d1957791 | 3002 | int btrfs_uuid_tree_remove(struct btrfs_trans_handle *trans, u8 *uuid, u8 type, |
07b30a49 | 3003 | u64 subid); |
70f80175 SB |
3004 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
3005 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
3006 | u64)); | |
07b30a49 | 3007 | |
dee26a9f | 3008 | /* dir-item.c */ |
9c52057c CM |
3009 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
3010 | const char *name, int name_len); | |
684572df | 3011 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, const char *name, |
8e7611cf | 3012 | int name_len, struct btrfs_inode *dir, |
aec7477b | 3013 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3014 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3015 | struct btrfs_root *root, | |
3016 | struct btrfs_path *path, u64 dir, | |
3017 | const char *name, int name_len, | |
3018 | int mod); | |
3019 | struct btrfs_dir_item * | |
3020 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3021 | struct btrfs_root *root, | |
3022 | struct btrfs_path *path, u64 dir, | |
3023 | u64 objectid, const char *name, int name_len, | |
3024 | int mod); | |
4df27c4d YZ |
3025 | struct btrfs_dir_item * |
3026 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3027 | struct btrfs_path *path, u64 dirid, | |
3028 | const char *name, int name_len); | |
7e38180e CM |
3029 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3030 | struct btrfs_root *root, | |
3031 | struct btrfs_path *path, | |
3032 | struct btrfs_dir_item *di); | |
5103e947 | 3033 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3034 | struct btrfs_root *root, |
3035 | struct btrfs_path *path, u64 objectid, | |
3036 | const char *name, u16 name_len, | |
3037 | const void *data, u16 data_len); | |
5103e947 JB |
3038 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3039 | struct btrfs_root *root, | |
3040 | struct btrfs_path *path, u64 dir, | |
3041 | const char *name, u16 name_len, | |
3042 | int mod); | |
2ff7e61e | 3043 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info, |
5f5bc6b1 FM |
3044 | struct btrfs_path *path, |
3045 | const char *name, | |
3046 | int name_len); | |
7b128766 JB |
3047 | |
3048 | /* orphan.c */ | |
3049 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3050 | struct btrfs_root *root, u64 offset); | |
3051 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3052 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3053 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3054 | |
dee26a9f | 3055 | /* inode-item.c */ |
3954401f CM |
3056 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3057 | struct btrfs_root *root, | |
3058 | const char *name, int name_len, | |
aec7477b | 3059 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3060 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3061 | struct btrfs_root *root, | |
3062 | const char *name, int name_len, | |
aec7477b | 3063 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
3064 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3065 | struct btrfs_root *root, | |
3066 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3067 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3068 | *root, struct btrfs_path *path, |
3069 | struct btrfs_key *location, int mod); | |
dee26a9f | 3070 | |
f186373f MF |
3071 | struct btrfs_inode_extref * |
3072 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3073 | struct btrfs_root *root, | |
3074 | struct btrfs_path *path, | |
3075 | const char *name, int name_len, | |
3076 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3077 | int cow); | |
3078 | ||
1f250e92 FM |
3079 | int btrfs_find_name_in_backref(struct extent_buffer *leaf, int slot, |
3080 | const char *name, | |
3081 | int name_len, struct btrfs_inode_ref **ref_ret); | |
3082 | int btrfs_find_name_in_ext_backref(struct extent_buffer *leaf, int slot, | |
f186373f MF |
3083 | u64 ref_objectid, const char *name, |
3084 | int name_len, | |
3085 | struct btrfs_inode_extref **extref_ret); | |
3086 | ||
dee26a9f | 3087 | /* file-item.c */ |
facc8a22 | 3088 | struct btrfs_dio_private; |
459931ec | 3089 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
5b4aacef | 3090 | struct btrfs_fs_info *fs_info, u64 bytenr, u64 len); |
4e4cbee9 CH |
3091 | blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u32 *dst); |
3092 | blk_status_t btrfs_lookup_bio_sums_dio(struct inode *inode, struct bio *bio, | |
2ff7e61e | 3093 | u64 logical_offset); |
b18c6685 | 3094 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3095 | struct btrfs_root *root, |
3096 | u64 objectid, u64 pos, | |
3097 | u64 disk_offset, u64 disk_num_bytes, | |
3098 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3099 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3100 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3101 | struct btrfs_root *root, | |
3102 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3103 | u64 bytenr, int mod); |
065631f6 | 3104 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3105 | struct btrfs_root *root, |
e6dcd2dc | 3106 | struct btrfs_ordered_sum *sums); |
4e4cbee9 | 3107 | blk_status_t btrfs_csum_one_bio(struct inode *inode, struct bio *bio, |
2ff7e61e | 3108 | u64 file_start, int contig); |
a2de733c AJ |
3109 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3110 | struct list_head *list, int search_commit); | |
9cdc5124 | 3111 | void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode, |
7ffbb598 FM |
3112 | const struct btrfs_path *path, |
3113 | struct btrfs_file_extent_item *fi, | |
3114 | const bool new_inline, | |
3115 | struct extent_map *em); | |
3116 | ||
39279cc3 | 3117 | /* inode.c */ |
fc4f21b1 NB |
3118 | struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, |
3119 | struct page *page, size_t pg_offset, u64 start, | |
3120 | u64 len, int create); | |
00361589 | 3121 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3122 | u64 *orig_start, u64 *orig_block_len, |
3123 | u64 *ram_bytes); | |
4881ee5a | 3124 | |
2b877331 NB |
3125 | void __btrfs_del_delalloc_inode(struct btrfs_root *root, |
3126 | struct btrfs_inode *inode); | |
3de4586c | 3127 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
70ddc553 | 3128 | int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index); |
e02119d5 CM |
3129 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3130 | struct btrfs_root *root, | |
4ec5934e | 3131 | struct btrfs_inode *dir, struct btrfs_inode *inode, |
e02119d5 CM |
3132 | const char *name, int name_len); |
3133 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
db0a669f | 3134 | struct btrfs_inode *parent_inode, struct btrfs_inode *inode, |
e02119d5 | 3135 | const char *name, int name_len, int add_backref, u64 index); |
f60a2364 | 3136 | int btrfs_delete_subvolume(struct inode *dir, struct dentry *dentry); |
9703fefe | 3137 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
2aaa6655 | 3138 | int front); |
e02119d5 CM |
3139 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3140 | struct btrfs_root *root, | |
3141 | struct inode *inode, u64 new_size, | |
3142 | u32 min_type); | |
3143 | ||
76f32e24 | 3144 | int btrfs_start_delalloc_inodes(struct btrfs_root *root); |
82b3e53b | 3145 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int nr); |
2ac55d41 | 3146 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
e3b8a485 | 3147 | unsigned int extra_bits, |
ba8b04c1 | 3148 | struct extent_state **cached_state, int dedupe); |
d2fb3437 | 3149 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3150 | struct btrfs_root *new_root, |
3151 | struct btrfs_root *parent_root, | |
3152 | u64 new_dirid); | |
81a75f67 | 3153 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
64a16701 DW |
3154 | size_t size, struct bio *bio, |
3155 | unsigned long bio_flags); | |
5cdc84bf | 3156 | void btrfs_set_range_writeback(struct extent_io_tree *tree, u64 start, u64 end); |
a528a241 | 3157 | vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf); |
9ebefb18 | 3158 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3159 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3160 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3161 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3162 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3163 | int btrfs_drop_inode(struct inode *inode); |
f5c29bd9 | 3164 | int __init btrfs_init_cachep(void); |
e67c718b | 3165 | void __cold btrfs_destroy_cachep(void); |
1a54ef8c | 3166 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3167 | struct btrfs_root *root, int *was_new); |
fc4f21b1 | 3168 | struct extent_map *btrfs_get_extent(struct btrfs_inode *inode, |
de2c6615 LB |
3169 | struct page *page, size_t pg_offset, |
3170 | u64 start, u64 end, int create); | |
a52d9a80 CM |
3171 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
3172 | struct btrfs_root *root, | |
3173 | struct inode *inode); | |
be6aef60 JB |
3174 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3175 | struct btrfs_root *root, struct inode *inode); | |
73f2e545 NB |
3176 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, |
3177 | struct btrfs_inode *inode); | |
66b4ffd1 | 3178 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
a41ad394 | 3179 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
24bbcf04 | 3180 | void btrfs_add_delayed_iput(struct inode *inode); |
2ff7e61e | 3181 | void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info); |
efa56464 YZ |
3182 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3183 | u64 start, u64 num_bytes, u64 min_size, | |
3184 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3185 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3186 | struct btrfs_trans_handle *trans, int mode, | |
3187 | u64 start, u64 num_bytes, u64 min_size, | |
3188 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 3189 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
3190 | |
3191 | /* ioctl.c */ | |
3192 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3193 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
d5131b65 | 3194 | int btrfs_ioctl_get_supported_features(void __user *arg); |
7b6a221e | 3195 | void btrfs_sync_inode_flags_to_i_flags(struct inode *inode); |
dd5f9615 | 3196 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3197 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3198 | struct btrfs_ioctl_defrag_range_args *range, | |
3199 | u64 newer_than, unsigned long max_pages); | |
008ef096 DS |
3200 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3201 | struct btrfs_ioctl_space_info *space); | |
3202 | void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info, | |
35a3621b | 3203 | struct btrfs_ioctl_balance_args *bargs); |
87eb5eb2 MS |
3204 | int btrfs_dedupe_file_range(struct file *src_file, loff_t src_loff, |
3205 | struct file *dst_file, loff_t dst_loff, | |
3206 | u64 olen); | |
35a3621b | 3207 | |
39279cc3 | 3208 | /* file.c */ |
f5c29bd9 | 3209 | int __init btrfs_auto_defrag_init(void); |
e67c718b | 3210 | void __cold btrfs_auto_defrag_exit(void); |
4cb5300b | 3211 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
6158e1ce | 3212 | struct btrfs_inode *inode); |
4cb5300b | 3213 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
26176e7c | 3214 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3215 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
dcdbc059 | 3216 | void btrfs_drop_extent_cache(struct btrfs_inode *inode, u64 start, u64 end, |
7014cdb4 | 3217 | int skip_pinned); |
828c0950 | 3218 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3219 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3220 | struct btrfs_root *root, struct inode *inode, | |
3221 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3222 | u64 *drop_end, int drop_cache, |
3223 | int replace_extent, | |
3224 | u32 extent_item_size, | |
3225 | int *key_inserted); | |
5dc562c5 JB |
3226 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3227 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3228 | u64 end, int drop_cache); |
d899e052 | 3229 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
7a6d7067 | 3230 | struct btrfs_inode *inode, u64 start, u64 end); |
6bf13c0c | 3231 | int btrfs_release_file(struct inode *inode, struct file *file); |
2ff7e61e JM |
3232 | int btrfs_dirty_pages(struct inode *inode, struct page **pages, |
3233 | size_t num_pages, loff_t pos, size_t write_bytes, | |
be1a12a0 | 3234 | struct extent_state **cached); |
728404da | 3235 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
04b38d60 CH |
3236 | int btrfs_clone_file_range(struct file *file_in, loff_t pos_in, |
3237 | struct file *file_out, loff_t pos_out, u64 len); | |
6bf13c0c | 3238 | |
6702ed49 CM |
3239 | /* tree-defrag.c */ |
3240 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3241 | struct btrfs_root *root); |
58176a96 JB |
3242 | |
3243 | /* sysfs.c */ | |
f5c29bd9 | 3244 | int __init btrfs_init_sysfs(void); |
e67c718b | 3245 | void __cold btrfs_exit_sysfs(void); |
96f3136e | 3246 | int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info); |
6618a59b | 3247 | void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info); |
58176a96 | 3248 | |
edbd8d4e | 3249 | /* super.c */ |
2ff7e61e | 3250 | int btrfs_parse_options(struct btrfs_fs_info *info, char *options, |
96da0919 | 3251 | unsigned long new_flags); |
6bf13c0c | 3252 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 | 3253 | |
e67c718b | 3254 | static inline __printf(2, 3) __cold |
2fd57fcb AB |
3255 | void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
3256 | { | |
3257 | } | |
3258 | ||
533574c6 JP |
3259 | #ifdef CONFIG_PRINTK |
3260 | __printf(2, 3) | |
e67c718b | 3261 | __cold |
c2cf52eb | 3262 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 | 3263 | #else |
2fd57fcb AB |
3264 | #define btrfs_printk(fs_info, fmt, args...) \ |
3265 | btrfs_no_printk(fs_info, fmt, ##args) | |
533574c6 JP |
3266 | #endif |
3267 | ||
c2cf52eb SK |
3268 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3269 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3270 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3271 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3272 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3273 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3274 | #define btrfs_err(fs_info, fmt, args...) \ | |
3275 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3276 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3277 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3278 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3279 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3280 | #define btrfs_info(fs_info, fmt, args...) \ | |
3281 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3282 | |
08a84e25 DS |
3283 | /* |
3284 | * Wrappers that use printk_in_rcu | |
3285 | */ | |
3286 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3287 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3288 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3289 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3290 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3291 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3292 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3293 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3294 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3295 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3296 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3297 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3298 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3299 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3300 | ||
24aa6b41 DS |
3301 | /* |
3302 | * Wrappers that use a ratelimited printk_in_rcu | |
3303 | */ | |
3304 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3305 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3306 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3307 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3308 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3309 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3310 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3311 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3312 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3313 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3314 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3315 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3316 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3317 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3318 | ||
1dd6d7ca DS |
3319 | /* |
3320 | * Wrappers that use a ratelimited printk | |
3321 | */ | |
3322 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3323 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3324 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3325 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3326 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3327 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3328 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3329 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3330 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3331 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3332 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3333 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3334 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3335 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
897a41b1 JM |
3336 | |
3337 | #if defined(CONFIG_DYNAMIC_DEBUG) | |
3338 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3339 | do { \ | |
3340 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3341 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3342 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args); \ | |
3343 | } while (0) | |
3344 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ | |
3345 | do { \ | |
3346 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3347 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3348 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args); \ | |
3349 | } while (0) | |
3350 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ | |
3351 | do { \ | |
3352 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3353 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3354 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, \ | |
3355 | ##args);\ | |
3356 | } while (0) | |
3357 | #define btrfs_debug_rl(fs_info, fmt, args...) \ | |
3358 | do { \ | |
3359 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3360 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3361 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, \ | |
3362 | ##args); \ | |
3363 | } while (0) | |
3364 | #elif defined(DEBUG) | |
c2cf52eb SK |
3365 | #define btrfs_debug(fs_info, fmt, args...) \ |
3366 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3367 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3368 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3369 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3370 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3371 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3372 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3373 | #else |
3374 | #define btrfs_debug(fs_info, fmt, args...) \ | |
c01f5f96 | 3375 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
08a84e25 | 3376 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
b6fdfbff | 3377 | btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
24aa6b41 | 3378 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
b6fdfbff | 3379 | btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) |
1dd6d7ca | 3380 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
c01f5f96 | 3381 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
27a0dd61 | 3382 | #endif |
c2cf52eb | 3383 | |
08a84e25 DS |
3384 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3385 | do { \ | |
3386 | rcu_read_lock(); \ | |
3387 | btrfs_printk(fs_info, fmt, ##args); \ | |
b6fdfbff MT |
3388 | rcu_read_unlock(); \ |
3389 | } while (0) | |
3390 | ||
3391 | #define btrfs_no_printk_in_rcu(fs_info, fmt, args...) \ | |
3392 | do { \ | |
3393 | rcu_read_lock(); \ | |
3394 | btrfs_no_printk(fs_info, fmt, ##args); \ | |
08a84e25 DS |
3395 | rcu_read_unlock(); \ |
3396 | } while (0) | |
3397 | ||
24aa6b41 DS |
3398 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3399 | do { \ | |
3400 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3401 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3402 | DEFAULT_RATELIMIT_BURST); \ | |
3403 | if (__ratelimit(&_rs)) \ | |
3404 | btrfs_printk(fs_info, fmt, ##args); \ | |
3405 | } while (0) | |
3406 | ||
3407 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3408 | do { \ | |
3409 | rcu_read_lock(); \ | |
3410 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3411 | rcu_read_unlock(); \ | |
3412 | } while (0) | |
3413 | ||
2e17c7c6 JB |
3414 | #ifdef CONFIG_BTRFS_ASSERT |
3415 | ||
c0d19e2b | 3416 | __cold |
2ffad70e | 3417 | static inline void assfail(const char *expr, const char *file, int line) |
2e17c7c6 | 3418 | { |
ab8d0fc4 | 3419 | pr_err("assertion failed: %s, file: %s, line: %d\n", |
2e17c7c6 JB |
3420 | expr, file, line); |
3421 | BUG(); | |
3422 | } | |
3423 | ||
3424 | #define ASSERT(expr) \ | |
3425 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3426 | #else | |
3427 | #define ASSERT(expr) ((void)0) | |
3428 | #endif | |
3429 | ||
ba3c2b19 NB |
3430 | __cold |
3431 | static inline void btrfs_print_v0_err(struct btrfs_fs_info *fs_info) | |
3432 | { | |
3433 | btrfs_err(fs_info, | |
3434 | "Unsupported V0 extent filesystem detected. Aborting. Please re-create your filesystem with a newer kernel"); | |
3435 | } | |
3436 | ||
533574c6 | 3437 | __printf(5, 6) |
c0d19e2b | 3438 | __cold |
34d97007 | 3439 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3440 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3441 | |
e33e17ee | 3442 | const char *btrfs_decode_error(int errno); |
533574c6 | 3443 | |
c0d19e2b | 3444 | __cold |
49b25e05 | 3445 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
66642832 | 3446 | const char *function, |
49b25e05 JM |
3447 | unsigned int line, int errno); |
3448 | ||
c5f4ccb2 AJ |
3449 | /* |
3450 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3451 | * detected, that way the exact line number is reported. | |
3452 | */ | |
66642832 | 3453 | #define btrfs_abort_transaction(trans, errno) \ |
c5f4ccb2 AJ |
3454 | do { \ |
3455 | /* Report first abort since mount */ \ | |
3456 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
66642832 | 3457 | &((trans)->fs_info->fs_state))) { \ |
e5d6b12f CM |
3458 | if ((errno) != -EIO) { \ |
3459 | WARN(1, KERN_DEBUG \ | |
3460 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3461 | (errno)); \ | |
3462 | } else { \ | |
71367b3f JM |
3463 | btrfs_debug((trans)->fs_info, \ |
3464 | "Transaction aborted (error %d)", \ | |
e5d6b12f CM |
3465 | (errno)); \ |
3466 | } \ | |
c5f4ccb2 | 3467 | } \ |
66642832 | 3468 | __btrfs_abort_transaction((trans), __func__, \ |
c5f4ccb2 AJ |
3469 | __LINE__, (errno)); \ |
3470 | } while (0) | |
3471 | ||
3472 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3473 | do { \ | |
3474 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3475 | (errno), fmt, ##args); \ | |
3476 | } while (0) | |
3477 | ||
3478 | __printf(5, 6) | |
3479 | __cold | |
3480 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3481 | unsigned int line, int errno, const char *fmt, ...); | |
3482 | /* | |
3483 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3484 | * will panic(). Otherwise we BUG() here. | |
3485 | */ | |
3486 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3487 | do { \ | |
3488 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3489 | BUG(); \ | |
3490 | } while (0) | |
3491 | ||
3492 | ||
3493 | /* compatibility and incompatibility defines */ | |
3494 | ||
2b0ce2c2 MH |
3495 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3496 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3497 | ||
3498 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3499 | u64 flag) | |
3500 | { | |
3501 | struct btrfs_super_block *disk_super; | |
3502 | u64 features; | |
3503 | ||
3504 | disk_super = fs_info->super_copy; | |
3505 | features = btrfs_super_incompat_flags(disk_super); | |
3506 | if (!(features & flag)) { | |
ceda0864 MX |
3507 | spin_lock(&fs_info->super_lock); |
3508 | features = btrfs_super_incompat_flags(disk_super); | |
3509 | if (!(features & flag)) { | |
3510 | features |= flag; | |
3511 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3512 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3513 | flag); |
3514 | } | |
3515 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3516 | } |
3517 | } | |
3518 | ||
1abfbcdf OS |
3519 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
3520 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3521 | ||
3522 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
3523 | u64 flag) | |
3524 | { | |
3525 | struct btrfs_super_block *disk_super; | |
3526 | u64 features; | |
3527 | ||
3528 | disk_super = fs_info->super_copy; | |
3529 | features = btrfs_super_incompat_flags(disk_super); | |
3530 | if (features & flag) { | |
3531 | spin_lock(&fs_info->super_lock); | |
3532 | features = btrfs_super_incompat_flags(disk_super); | |
3533 | if (features & flag) { | |
3534 | features &= ~flag; | |
3535 | btrfs_set_super_incompat_flags(disk_super, features); | |
3536 | btrfs_info(fs_info, "clearing %llu feature flag", | |
3537 | flag); | |
3538 | } | |
3539 | spin_unlock(&fs_info->super_lock); | |
3540 | } | |
3541 | } | |
3542 | ||
3173a18f JB |
3543 | #define btrfs_fs_incompat(fs_info, opt) \ |
3544 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3545 | ||
9780c497 | 3546 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3547 | { |
3548 | struct btrfs_super_block *disk_super; | |
3549 | disk_super = fs_info->super_copy; | |
3550 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3551 | } | |
3552 | ||
1abfbcdf OS |
3553 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
3554 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3555 | ||
3556 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3557 | u64 flag) | |
3558 | { | |
3559 | struct btrfs_super_block *disk_super; | |
3560 | u64 features; | |
3561 | ||
3562 | disk_super = fs_info->super_copy; | |
3563 | features = btrfs_super_compat_ro_flags(disk_super); | |
3564 | if (!(features & flag)) { | |
3565 | spin_lock(&fs_info->super_lock); | |
3566 | features = btrfs_super_compat_ro_flags(disk_super); | |
3567 | if (!(features & flag)) { | |
3568 | features |= flag; | |
3569 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3570 | btrfs_info(fs_info, "setting %llu ro feature flag", | |
3571 | flag); | |
3572 | } | |
3573 | spin_unlock(&fs_info->super_lock); | |
3574 | } | |
3575 | } | |
3576 | ||
3577 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
3578 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3579 | ||
3580 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3581 | u64 flag) | |
3582 | { | |
3583 | struct btrfs_super_block *disk_super; | |
3584 | u64 features; | |
3585 | ||
3586 | disk_super = fs_info->super_copy; | |
3587 | features = btrfs_super_compat_ro_flags(disk_super); | |
3588 | if (features & flag) { | |
3589 | spin_lock(&fs_info->super_lock); | |
3590 | features = btrfs_super_compat_ro_flags(disk_super); | |
3591 | if (features & flag) { | |
3592 | features &= ~flag; | |
3593 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3594 | btrfs_info(fs_info, "clearing %llu ro feature flag", | |
3595 | flag); | |
3596 | } | |
3597 | spin_unlock(&fs_info->super_lock); | |
3598 | } | |
3599 | } | |
3600 | ||
3601 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3602 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3603 | ||
3604 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3605 | { | |
3606 | struct btrfs_super_block *disk_super; | |
3607 | disk_super = fs_info->super_copy; | |
3608 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3609 | } | |
3610 | ||
33268eaf | 3611 | /* acl.c */ |
0eda294d | 3612 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3613 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3614 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3615 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3616 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3617 | #else |
ed8f3737 | 3618 | #define btrfs_get_acl NULL |
996a710d | 3619 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3620 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3621 | struct inode *inode, struct inode *dir) | |
3622 | { | |
3623 | return 0; | |
3624 | } | |
9b89d95a | 3625 | #endif |
0f9dd46c | 3626 | |
5d4f98a2 | 3627 | /* relocation.c */ |
6bccf3ab | 3628 | int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start); |
5d4f98a2 YZ |
3629 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
3630 | struct btrfs_root *root); | |
3631 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3632 | struct btrfs_root *root); | |
3633 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3634 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
3635 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3636 | struct btrfs_root *root, struct extent_buffer *buf, | |
3637 | struct extent_buffer *cow); | |
147d256e | 3638 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 3639 | u64 *bytes_to_reserve); |
49b25e05 | 3640 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3641 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3642 | |
3643 | /* scrub.c */ | |
aa1b8cd4 SB |
3644 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3645 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3646 | int readonly, int is_dev_replace); |
2ff7e61e JM |
3647 | void btrfs_scrub_pause(struct btrfs_fs_info *fs_info); |
3648 | void btrfs_scrub_continue(struct btrfs_fs_info *fs_info); | |
aa1b8cd4 SB |
3649 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
3650 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
3651 | struct btrfs_device *dev); | |
2ff7e61e | 3652 | int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid, |
a2de733c | 3653 | struct btrfs_scrub_progress *progress); |
0966a7b1 QW |
3654 | static inline void btrfs_init_full_stripe_locks_tree( |
3655 | struct btrfs_full_stripe_locks_tree *locks_root) | |
3656 | { | |
3657 | locks_root->root = RB_ROOT; | |
3658 | mutex_init(&locks_root->lock); | |
3659 | } | |
c404e0dc MX |
3660 | |
3661 | /* dev-replace.c */ | |
3662 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
3663 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
3664 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
3665 | ||
3666 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
3667 | { | |
3668 | btrfs_bio_counter_sub(fs_info, 1); | |
3669 | } | |
a2de733c | 3670 | |
7414a03f AJ |
3671 | /* reada.c */ |
3672 | struct reada_control { | |
c28f158e | 3673 | struct btrfs_fs_info *fs_info; /* tree to prefetch */ |
7414a03f AJ |
3674 | struct btrfs_key key_start; |
3675 | struct btrfs_key key_end; /* exclusive */ | |
3676 | atomic_t elems; | |
3677 | struct kref refcnt; | |
3678 | wait_queue_head_t wait; | |
3679 | }; | |
3680 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3681 | struct btrfs_key *start, struct btrfs_key *end); | |
3682 | int btrfs_reada_wait(void *handle); | |
3683 | void btrfs_reada_detach(void *handle); | |
d48d71aa | 3684 | int btree_readahead_hook(struct extent_buffer *eb, int err); |
7414a03f | 3685 | |
95a06077 JS |
3686 | static inline int is_fstree(u64 rootid) |
3687 | { | |
3688 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
3689 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
3690 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
3691 | return 1; |
3692 | return 0; | |
3693 | } | |
210549eb DS |
3694 | |
3695 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3696 | { | |
3697 | return signal_pending(current); | |
3698 | } | |
3699 | ||
aaedb55b JB |
3700 | /* Sanity test specific functions */ |
3701 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
a654666a | 3702 | void btrfs_test_inode_set_ops(struct inode *inode); |
aaedb55b | 3703 | void btrfs_test_destroy_inode(struct inode *inode); |
210549eb | 3704 | |
f5ee5c9a | 3705 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
fccb84c9 | 3706 | { |
b2fa1154 DS |
3707 | return test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state); |
3708 | } | |
3709 | #else | |
3710 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) | |
3711 | { | |
fccb84c9 DS |
3712 | return 0; |
3713 | } | |
b2fa1154 | 3714 | #endif |
9888c340 | 3715 | |
110a21fe DS |
3716 | static inline void cond_wake_up(struct wait_queue_head *wq) |
3717 | { | |
3718 | /* | |
3719 | * This implies a full smp_mb barrier, see comments for | |
3720 | * waitqueue_active why. | |
3721 | */ | |
3722 | if (wq_has_sleeper(wq)) | |
3723 | wake_up(wq); | |
3724 | } | |
3725 | ||
3726 | static inline void cond_wake_up_nomb(struct wait_queue_head *wq) | |
3727 | { | |
3728 | /* | |
3729 | * Special case for conditional wakeup where the barrier required for | |
3730 | * waitqueue_active is implied by some of the preceding code. Eg. one | |
3731 | * of such atomic operations (atomic_dec_and_return, ...), or a | |
3732 | * unlock/lock sequence, etc. | |
3733 | */ | |
3734 | if (waitqueue_active(wq)) | |
3735 | wake_up(wq); | |
3736 | } | |
3737 | ||
eb60ceac | 3738 | #endif |