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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
810191ff | 22 | #include <linux/mm.h> |
174cd4b1 | 23 | #include <linux/sched/signal.h> |
810191ff | 24 | #include <linux/highmem.h> |
e20d96d6 | 25 | #include <linux/fs.h> |
a2de733c | 26 | #include <linux/rwsem.h> |
803b2f54 | 27 | #include <linux/semaphore.h> |
58176a96 | 28 | #include <linux/completion.h> |
04160088 | 29 | #include <linux/backing-dev.h> |
e6dcd2dc | 30 | #include <linux/wait.h> |
5a0e3ad6 | 31 | #include <linux/slab.h> |
f8b18087 | 32 | #include <linux/kobject.h> |
1abe9b8a | 33 | #include <trace/events/btrfs.h> |
479965d6 | 34 | #include <asm/kmap_types.h> |
3b16a4e3 | 35 | #include <linux/pagemap.h> |
55e301fd | 36 | #include <linux/btrfs.h> |
db671160 | 37 | #include <linux/btrfs_tree.h> |
21c7e756 | 38 | #include <linux/workqueue.h> |
f667aef6 | 39 | #include <linux/security.h> |
ee22184b | 40 | #include <linux/sizes.h> |
897a41b1 | 41 | #include <linux/dynamic_debug.h> |
1e4f4714 | 42 | #include <linux/refcount.h> |
d1310b2e | 43 | #include "extent_io.h" |
5f39d397 | 44 | #include "extent_map.h" |
8b712842 | 45 | #include "async-thread.h" |
e20d96d6 | 46 | |
e089f05c | 47 | struct btrfs_trans_handle; |
79154b1b | 48 | struct btrfs_transaction; |
a22285a6 | 49 | struct btrfs_pending_snapshot; |
35b7e476 | 50 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
35b7e476 | 51 | extern struct kmem_cache *btrfs_bit_radix_cachep; |
2c90e5d6 | 52 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 53 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 54 | struct btrfs_ordered_sum; |
e089f05c | 55 | |
294e30fe JB |
56 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
57 | #define STATIC noinline | |
58 | #else | |
59 | #define STATIC static noinline | |
60 | #endif | |
61 | ||
cdb4c574 | 62 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 63 | |
72d7aefc | 64 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 65 | |
4008c04a | 66 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 67 | |
5d4f98a2 YZ |
68 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
69 | ||
727011e0 CM |
70 | /* |
71 | * the max metadata block size. This limit is somewhat artificial, | |
72 | * but the memmove costs go through the roof for larger blocks. | |
73 | */ | |
74 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
75 | ||
e20d96d6 CM |
76 | /* |
77 | * we can actually store much bigger names, but lets not confuse the rest | |
78 | * of linux | |
79 | */ | |
80 | #define BTRFS_NAME_LEN 255 | |
81 | ||
f186373f MF |
82 | /* |
83 | * Theoretical limit is larger, but we keep this down to a sane | |
84 | * value. That should limit greatly the possibility of collisions on | |
85 | * inode ref items. | |
86 | */ | |
87 | #define BTRFS_LINK_MAX 65535U | |
88 | ||
4d4ab6d6 | 89 | static const int btrfs_csum_sizes[] = { 4 }; |
607d432d | 90 | |
509659cd | 91 | /* four bytes for CRC32 */ |
3954401f | 92 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 93 | |
3d136a11 SB |
94 | /* ioprio of readahead is set to idle */ |
95 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
96 | ||
ee22184b | 97 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M |
e2d84521 | 98 | |
ee22184b | 99 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M |
dcab6a3b | 100 | |
823bb20a DS |
101 | /* |
102 | * Count how many BTRFS_MAX_EXTENT_SIZE cover the @size | |
103 | */ | |
104 | static inline u32 count_max_extents(u64 size) | |
105 | { | |
106 | return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE); | |
107 | } | |
108 | ||
0b86a832 CM |
109 | struct btrfs_mapping_tree { |
110 | struct extent_map_tree map_tree; | |
111 | }; | |
112 | ||
0b86a832 CM |
113 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
114 | { | |
115 | BUG_ON(num_stripes == 0); | |
116 | return sizeof(struct btrfs_chunk) + | |
117 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
118 | } | |
119 | ||
acce952b | 120 | /* |
121 | * File system states | |
122 | */ | |
87533c47 | 123 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 124 | #define BTRFS_FS_STATE_REMOUNTING 1 |
08748810 | 125 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
c404e0dc | 126 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
7c0260ee | 127 | #define BTRFS_FS_STATE_DUMMY_FS_INFO 4 |
acce952b | 128 | |
5d4f98a2 YZ |
129 | #define BTRFS_BACKREF_REV_MAX 256 |
130 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
131 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
132 | BTRFS_BACKREF_REV_SHIFT) | |
133 | ||
134 | #define BTRFS_OLD_BACKREF_REV 0 | |
135 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 136 | |
fec577fb CM |
137 | /* |
138 | * every tree block (leaf or node) starts with this header. | |
139 | */ | |
bb492bb0 | 140 | struct btrfs_header { |
e17cade2 | 141 | /* these first four must match the super block */ |
f254e52c | 142 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 143 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 144 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 145 | __le64 flags; |
e17cade2 CM |
146 | |
147 | /* allowed to be different from the super from here on down */ | |
148 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 149 | __le64 generation; |
4d775673 | 150 | __le64 owner; |
5f39d397 | 151 | __le32 nritems; |
9a6f11ed | 152 | u8 level; |
eb60ceac CM |
153 | } __attribute__ ((__packed__)); |
154 | ||
0b86a832 CM |
155 | /* |
156 | * this is a very generous portion of the super block, giving us | |
157 | * room to translate 14 chunks with 3 stripes each. | |
158 | */ | |
159 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
160 | ||
af31f5e5 CM |
161 | /* |
162 | * just in case we somehow lose the roots and are not able to mount, | |
163 | * we store an array of the roots from previous transactions | |
164 | * in the super. | |
165 | */ | |
166 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
167 | struct btrfs_root_backup { | |
168 | __le64 tree_root; | |
169 | __le64 tree_root_gen; | |
170 | ||
171 | __le64 chunk_root; | |
172 | __le64 chunk_root_gen; | |
173 | ||
174 | __le64 extent_root; | |
175 | __le64 extent_root_gen; | |
176 | ||
177 | __le64 fs_root; | |
178 | __le64 fs_root_gen; | |
179 | ||
180 | __le64 dev_root; | |
181 | __le64 dev_root_gen; | |
182 | ||
183 | __le64 csum_root; | |
184 | __le64 csum_root_gen; | |
185 | ||
186 | __le64 total_bytes; | |
187 | __le64 bytes_used; | |
188 | __le64 num_devices; | |
189 | /* future */ | |
d1423248 | 190 | __le64 unused_64[4]; |
af31f5e5 CM |
191 | |
192 | u8 tree_root_level; | |
193 | u8 chunk_root_level; | |
194 | u8 extent_root_level; | |
195 | u8 fs_root_level; | |
196 | u8 dev_root_level; | |
197 | u8 csum_root_level; | |
198 | /* future and to align */ | |
199 | u8 unused_8[10]; | |
200 | } __attribute__ ((__packed__)); | |
201 | ||
fec577fb CM |
202 | /* |
203 | * the super block basically lists the main trees of the FS | |
204 | * it currently lacks any block count etc etc | |
205 | */ | |
234b63a0 | 206 | struct btrfs_super_block { |
f254e52c | 207 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 208 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 209 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 210 | __le64 bytenr; /* this block number */ |
63b10fc4 | 211 | __le64 flags; |
e17cade2 CM |
212 | |
213 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 214 | __le64 magic; |
3768f368 CM |
215 | __le64 generation; |
216 | __le64 root; | |
0b86a832 | 217 | __le64 chunk_root; |
e02119d5 | 218 | __le64 log_root; |
c3027eb5 CM |
219 | |
220 | /* this will help find the new super based on the log root */ | |
221 | __le64 log_root_transid; | |
db94535d CM |
222 | __le64 total_bytes; |
223 | __le64 bytes_used; | |
2e635a27 | 224 | __le64 root_dir_objectid; |
8a4b83cc | 225 | __le64 num_devices; |
5f39d397 CM |
226 | __le32 sectorsize; |
227 | __le32 nodesize; | |
707e8a07 | 228 | __le32 __unused_leafsize; |
87ee04eb | 229 | __le32 stripesize; |
0b86a832 | 230 | __le32 sys_chunk_array_size; |
84234f3a | 231 | __le64 chunk_root_generation; |
f2b636e8 JB |
232 | __le64 compat_flags; |
233 | __le64 compat_ro_flags; | |
234 | __le64 incompat_flags; | |
607d432d | 235 | __le16 csum_type; |
db94535d | 236 | u8 root_level; |
0b86a832 | 237 | u8 chunk_root_level; |
e02119d5 | 238 | u8 log_root_level; |
0d81ba5d | 239 | struct btrfs_dev_item dev_item; |
c3027eb5 | 240 | |
7ae9c09d | 241 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 242 | |
0af3d00b | 243 | __le64 cache_generation; |
26432799 | 244 | __le64 uuid_tree_generation; |
0af3d00b | 245 | |
c3027eb5 | 246 | /* future expansion */ |
26432799 | 247 | __le64 reserved[30]; |
0b86a832 | 248 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 249 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
250 | } __attribute__ ((__packed__)); |
251 | ||
f2b636e8 JB |
252 | /* |
253 | * Compat flags that we support. If any incompat flags are set other than the | |
254 | * ones specified below then we will fail to mount | |
255 | */ | |
5d4f98a2 | 256 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
257 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
258 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
70f6d82e OS |
259 | |
260 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ | |
6675df31 OS |
261 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \ |
262 | BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID) | |
70f6d82e | 263 | |
2eaa055f JM |
264 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
265 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
266 | ||
0af3d00b JB |
267 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
268 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 269 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 270 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 271 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 272 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
53b381b3 | 273 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 274 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f JB |
275 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
276 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) | |
f2b636e8 | 277 | |
2eaa055f JM |
278 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
279 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
280 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 281 | |
fec577fb | 282 | /* |
62e2749e | 283 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
284 | * the item in the leaf (relative to the start of the data area) |
285 | */ | |
0783fcfc | 286 | struct btrfs_item { |
e2fa7227 | 287 | struct btrfs_disk_key key; |
123abc88 | 288 | __le32 offset; |
5f39d397 | 289 | __le32 size; |
eb60ceac CM |
290 | } __attribute__ ((__packed__)); |
291 | ||
fec577fb CM |
292 | /* |
293 | * leaves have an item area and a data area: | |
294 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
295 | * | |
296 | * The data is separate from the items to get the keys closer together | |
297 | * during searches. | |
298 | */ | |
234b63a0 | 299 | struct btrfs_leaf { |
bb492bb0 | 300 | struct btrfs_header header; |
123abc88 | 301 | struct btrfs_item items[]; |
eb60ceac CM |
302 | } __attribute__ ((__packed__)); |
303 | ||
fec577fb CM |
304 | /* |
305 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
306 | * other blocks | |
307 | */ | |
123abc88 CM |
308 | struct btrfs_key_ptr { |
309 | struct btrfs_disk_key key; | |
310 | __le64 blockptr; | |
74493f7a | 311 | __le64 generation; |
123abc88 CM |
312 | } __attribute__ ((__packed__)); |
313 | ||
234b63a0 | 314 | struct btrfs_node { |
bb492bb0 | 315 | struct btrfs_header header; |
123abc88 | 316 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
317 | } __attribute__ ((__packed__)); |
318 | ||
fec577fb | 319 | /* |
234b63a0 CM |
320 | * btrfs_paths remember the path taken from the root down to the leaf. |
321 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
322 | * to any other levels that are present. |
323 | * | |
324 | * The slots array records the index of the item or block pointer | |
325 | * used while walking the tree. | |
326 | */ | |
e4058b54 | 327 | enum { READA_NONE = 0, READA_BACK, READA_FORWARD }; |
234b63a0 | 328 | struct btrfs_path { |
5f39d397 | 329 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 330 | int slots[BTRFS_MAX_LEVEL]; |
925baedd | 331 | /* if there is real range locking, this locks field will change */ |
4fb72bf2 | 332 | u8 locks[BTRFS_MAX_LEVEL]; |
dccabfad | 333 | u8 reada; |
925baedd | 334 | /* keep some upper locks as we walk down */ |
7853f15b | 335 | u8 lowest_level; |
459931ec CM |
336 | |
337 | /* | |
338 | * set by btrfs_split_item, tells search_slot to keep all locks | |
339 | * and to force calls to keep space in the nodes | |
340 | */ | |
b9473439 CM |
341 | unsigned int search_for_split:1; |
342 | unsigned int keep_locks:1; | |
343 | unsigned int skip_locking:1; | |
344 | unsigned int leave_spinning:1; | |
5d4f98a2 | 345 | unsigned int search_commit_root:1; |
3f8a18cc | 346 | unsigned int need_commit_sem:1; |
5f5bc6b1 | 347 | unsigned int skip_release_on_error:1; |
eb60ceac | 348 | }; |
da17066c | 349 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \ |
5d4f98a2 | 350 | sizeof(struct btrfs_item)) |
e922e087 SB |
351 | struct btrfs_dev_replace { |
352 | u64 replace_state; /* see #define above */ | |
353 | u64 time_started; /* seconds since 1-Jan-1970 */ | |
354 | u64 time_stopped; /* seconds since 1-Jan-1970 */ | |
355 | atomic64_t num_write_errors; | |
356 | atomic64_t num_uncorrectable_read_errors; | |
357 | ||
358 | u64 cursor_left; | |
359 | u64 committed_cursor_left; | |
360 | u64 cursor_left_last_write_of_item; | |
361 | u64 cursor_right; | |
362 | ||
363 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
364 | ||
365 | int is_valid; | |
366 | int item_needs_writeback; | |
367 | struct btrfs_device *srcdev; | |
368 | struct btrfs_device *tgtdev; | |
369 | ||
370 | pid_t lock_owner; | |
371 | atomic_t nesting_level; | |
372 | struct mutex lock_finishing_cancel_unmount; | |
73beece9 LB |
373 | rwlock_t lock; |
374 | atomic_t read_locks; | |
375 | atomic_t blocking_readers; | |
376 | wait_queue_head_t read_lock_wq; | |
e922e087 SB |
377 | |
378 | struct btrfs_scrub_progress scrub_progress; | |
379 | }; | |
380 | ||
c1895442 JM |
381 | /* For raid type sysfs entries */ |
382 | struct raid_kobject { | |
383 | int raid_type; | |
384 | struct kobject kobj; | |
385 | }; | |
386 | ||
6324fbf3 | 387 | struct btrfs_space_info { |
26b47ff6 | 388 | spinlock_t lock; |
6a63209f | 389 | |
89a55897 JB |
390 | u64 total_bytes; /* total bytes in the space, |
391 | this doesn't take mirrors into account */ | |
b742bb82 | 392 | u64 bytes_used; /* total bytes used, |
e9c54999 | 393 | this doesn't take mirrors into account */ |
6a63209f JB |
394 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
395 | transaction finishes */ | |
396 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
397 | current allocations */ | |
6a63209f | 398 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 399 | delalloc/allocations */ |
26b47ff6 MX |
400 | u64 bytes_readonly; /* total bytes that are read only */ |
401 | ||
4f4db217 JB |
402 | u64 max_extent_size; /* This will hold the maximum extent size of |
403 | the space info if we had an ENOSPC in the | |
404 | allocator. */ | |
405 | ||
26b47ff6 MX |
406 | unsigned int full:1; /* indicates that we cannot allocate any more |
407 | chunks for this space */ | |
408 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
409 | ||
410 | unsigned int flush:1; /* set if we are trying to make space */ | |
411 | ||
412 | unsigned int force_alloc; /* set if we need to force a chunk | |
413 | alloc for this space */ | |
414 | ||
b742bb82 | 415 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
416 | u64 disk_total; /* total bytes on disk, takes mirrors into |
417 | account */ | |
6a63209f | 418 | |
26b47ff6 MX |
419 | u64 flags; |
420 | ||
b150a4f1 JB |
421 | /* |
422 | * bytes_pinned is kept in line with what is actually pinned, as in | |
423 | * we've called update_block_group and dropped the bytes_used counter | |
424 | * and increased the bytes_pinned counter. However this means that | |
425 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
bb7ab3b9 AB |
426 | * delayed refs are flushed, so this counter is inc'ed every time we |
427 | * call btrfs_free_extent so it is a realtime count of what will be | |
01327610 | 428 | * freed once the transaction is committed. It will be zeroed every |
bb7ab3b9 | 429 | * time the transaction commits. |
b150a4f1 JB |
430 | */ |
431 | struct percpu_counter total_bytes_pinned; | |
432 | ||
6324fbf3 | 433 | struct list_head list; |
75c68e9f | 434 | /* Protected by the spinlock 'lock'. */ |
633c0aad | 435 | struct list_head ro_bgs; |
957780eb JB |
436 | struct list_head priority_tickets; |
437 | struct list_head tickets; | |
939659df WX |
438 | /* |
439 | * tickets_id just indicates the next ticket will be handled, so note | |
440 | * it's not stored per ticket. | |
441 | */ | |
ce129655 | 442 | u64 tickets_id; |
0f9dd46c | 443 | |
26b47ff6 | 444 | struct rw_semaphore groups_sem; |
0f9dd46c | 445 | /* for block groups in our same type */ |
b742bb82 | 446 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 447 | wait_queue_head_t wait; |
6ab0a202 JM |
448 | |
449 | struct kobject kobj; | |
c1895442 | 450 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
0f9dd46c JB |
451 | }; |
452 | ||
66d8f3dd MX |
453 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
454 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
455 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
456 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
457 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
458 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
459 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
460 | ||
f0486c68 YZ |
461 | struct btrfs_block_rsv { |
462 | u64 size; | |
463 | u64 reserved; | |
f0486c68 | 464 | struct btrfs_space_info *space_info; |
f0486c68 | 465 | spinlock_t lock; |
66d8f3dd MX |
466 | unsigned short full; |
467 | unsigned short type; | |
468 | unsigned short failfast; | |
f0486c68 YZ |
469 | }; |
470 | ||
fa9c0d79 CM |
471 | /* |
472 | * free clusters are used to claim free space in relatively large chunks, | |
473 | * allowing us to do less seeky writes. They are used for all metadata | |
474 | * allocations and data allocations in ssd mode. | |
475 | */ | |
476 | struct btrfs_free_cluster { | |
477 | spinlock_t lock; | |
478 | spinlock_t refill_lock; | |
479 | struct rb_root root; | |
480 | ||
481 | /* largest extent in this cluster */ | |
482 | u64 max_size; | |
483 | ||
484 | /* first extent starting offset */ | |
485 | u64 window_start; | |
486 | ||
c759c4e1 JB |
487 | /* We did a full search and couldn't create a cluster */ |
488 | bool fragmented; | |
489 | ||
fa9c0d79 CM |
490 | struct btrfs_block_group_cache *block_group; |
491 | /* | |
492 | * when a cluster is allocated from a block group, we put the | |
493 | * cluster onto a list in the block group so that it can | |
494 | * be freed before the block group is freed. | |
495 | */ | |
496 | struct list_head block_group_list; | |
6324fbf3 CM |
497 | }; |
498 | ||
817d52f8 JB |
499 | enum btrfs_caching_type { |
500 | BTRFS_CACHE_NO = 0, | |
501 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
502 | BTRFS_CACHE_FAST = 2, |
503 | BTRFS_CACHE_FINISHED = 3, | |
36cce922 | 504 | BTRFS_CACHE_ERROR = 4, |
817d52f8 JB |
505 | }; |
506 | ||
0af3d00b JB |
507 | enum btrfs_disk_cache_state { |
508 | BTRFS_DC_WRITTEN = 0, | |
509 | BTRFS_DC_ERROR = 1, | |
510 | BTRFS_DC_CLEAR = 2, | |
511 | BTRFS_DC_SETUP = 3, | |
0af3d00b JB |
512 | }; |
513 | ||
11833d66 YZ |
514 | struct btrfs_caching_control { |
515 | struct list_head list; | |
516 | struct mutex mutex; | |
517 | wait_queue_head_t wait; | |
bab39bf9 | 518 | struct btrfs_work work; |
11833d66 YZ |
519 | struct btrfs_block_group_cache *block_group; |
520 | u64 progress; | |
1e4f4714 | 521 | refcount_t count; |
11833d66 YZ |
522 | }; |
523 | ||
73fa48b6 OS |
524 | /* Once caching_thread() finds this much free space, it will wake up waiters. */ |
525 | #define CACHING_CTL_WAKE_UP (1024 * 1024 * 2) | |
526 | ||
4c6d1d85 CM |
527 | struct btrfs_io_ctl { |
528 | void *cur, *orig; | |
529 | struct page *page; | |
530 | struct page **pages; | |
f15376df | 531 | struct btrfs_fs_info *fs_info; |
c9dc4c65 | 532 | struct inode *inode; |
4c6d1d85 CM |
533 | unsigned long size; |
534 | int index; | |
535 | int num_pages; | |
c9dc4c65 CM |
536 | int entries; |
537 | int bitmaps; | |
4c6d1d85 CM |
538 | unsigned check_crcs:1; |
539 | }; | |
540 | ||
0966a7b1 QW |
541 | /* |
542 | * Tree to record all locked full stripes of a RAID5/6 block group | |
543 | */ | |
544 | struct btrfs_full_stripe_locks_tree { | |
545 | struct rb_root root; | |
546 | struct mutex lock; | |
547 | }; | |
548 | ||
9078a3e1 CM |
549 | struct btrfs_block_group_cache { |
550 | struct btrfs_key key; | |
551 | struct btrfs_block_group_item item; | |
817d52f8 | 552 | struct btrfs_fs_info *fs_info; |
0af3d00b | 553 | struct inode *inode; |
c286ac48 | 554 | spinlock_t lock; |
324ae4df | 555 | u64 pinned; |
e8569813 | 556 | u64 reserved; |
e570fd27 | 557 | u64 delalloc_bytes; |
1b2da372 | 558 | u64 bytes_super; |
0b86a832 | 559 | u64 flags; |
5b0e95bf | 560 | u64 cache_generation; |
a5ed9182 OS |
561 | u32 sectorsize; |
562 | ||
563 | /* | |
564 | * If the free space extent count exceeds this number, convert the block | |
565 | * group to bitmaps. | |
566 | */ | |
567 | u32 bitmap_high_thresh; | |
568 | ||
569 | /* | |
570 | * If the free space extent count drops below this number, convert the | |
571 | * block group back to extents. | |
572 | */ | |
573 | u32 bitmap_low_thresh; | |
53b381b3 | 574 | |
e570fd27 MX |
575 | /* |
576 | * It is just used for the delayed data space allocation because | |
577 | * only the data space allocation and the relative metadata update | |
578 | * can be done cross the transaction. | |
579 | */ | |
580 | struct rw_semaphore data_rwsem; | |
581 | ||
53b381b3 DW |
582 | /* for raid56, this is a full stripe, without parity */ |
583 | unsigned long full_stripe_len; | |
584 | ||
868f401a | 585 | unsigned int ro; |
0410c94a | 586 | unsigned int iref:1; |
4f69cb98 | 587 | unsigned int has_caching_ctl:1; |
04216820 | 588 | unsigned int removed:1; |
0af3d00b JB |
589 | |
590 | int disk_cache_state; | |
0f9dd46c | 591 | |
817d52f8 | 592 | /* cache tracking stuff */ |
817d52f8 | 593 | int cached; |
11833d66 YZ |
594 | struct btrfs_caching_control *caching_ctl; |
595 | u64 last_byte_to_unpin; | |
817d52f8 | 596 | |
0f9dd46c JB |
597 | struct btrfs_space_info *space_info; |
598 | ||
599 | /* free space cache stuff */ | |
34d52cb6 | 600 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
601 | |
602 | /* block group cache stuff */ | |
603 | struct rb_node cache_node; | |
604 | ||
605 | /* for block groups in the same raid type */ | |
606 | struct list_head list; | |
d2fb3437 YZ |
607 | |
608 | /* usage count */ | |
609 | atomic_t count; | |
fa9c0d79 CM |
610 | |
611 | /* List of struct btrfs_free_clusters for this block group. | |
612 | * Today it will only have one thing on it, but that may change | |
613 | */ | |
614 | struct list_head cluster_list; | |
ea658bad | 615 | |
47ab2a6c JB |
616 | /* For delayed block group creation or deletion of empty block groups */ |
617 | struct list_head bg_list; | |
633c0aad JB |
618 | |
619 | /* For read-only block groups */ | |
620 | struct list_head ro_list; | |
04216820 FM |
621 | |
622 | atomic_t trimming; | |
ce93ec54 JB |
623 | |
624 | /* For dirty block groups */ | |
625 | struct list_head dirty_list; | |
c9dc4c65 CM |
626 | struct list_head io_list; |
627 | ||
628 | struct btrfs_io_ctl io_ctl; | |
a5ed9182 | 629 | |
9cfa3e34 FM |
630 | /* |
631 | * Incremented when doing extent allocations and holding a read lock | |
632 | * on the space_info's groups_sem semaphore. | |
633 | * Decremented when an ordered extent that represents an IO against this | |
634 | * block group's range is created (after it's added to its inode's | |
635 | * root's list of ordered extents) or immediately after the allocation | |
636 | * if it's a metadata extent or fallocate extent (for these cases we | |
637 | * don't create ordered extents). | |
638 | */ | |
639 | atomic_t reservations; | |
640 | ||
f78c436c FM |
641 | /* |
642 | * Incremented while holding the spinlock *lock* by a task checking if | |
643 | * it can perform a nocow write (incremented if the value for the *ro* | |
644 | * field is 0). Decremented by such tasks once they create an ordered | |
645 | * extent or before that if some error happens before reaching that step. | |
646 | * This is to prevent races between block group relocation and nocow | |
647 | * writes through direct IO. | |
648 | */ | |
649 | atomic_t nocow_writers; | |
650 | ||
a5ed9182 OS |
651 | /* Lock for free space tree operations. */ |
652 | struct mutex free_space_lock; | |
653 | ||
654 | /* | |
655 | * Does the block group need to be added to the free space tree? | |
656 | * Protected by free_space_lock. | |
657 | */ | |
658 | int needs_free_space; | |
0966a7b1 QW |
659 | |
660 | /* Record locked full stripes for RAID5/6 block group */ | |
661 | struct btrfs_full_stripe_locks_tree full_stripe_locks_root; | |
9078a3e1 | 662 | }; |
0b86a832 | 663 | |
097b8a7c JS |
664 | /* delayed seq elem */ |
665 | struct seq_list { | |
666 | struct list_head list; | |
667 | u64 seq; | |
668 | }; | |
669 | ||
3284da7b DS |
670 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
671 | ||
de47c9d3 EN |
672 | #define SEQ_LAST ((u64)-1) |
673 | ||
5d80366e JB |
674 | enum btrfs_orphan_cleanup_state { |
675 | ORPHAN_CLEANUP_STARTED = 1, | |
676 | ORPHAN_CLEANUP_DONE = 2, | |
677 | }; | |
678 | ||
53b381b3 DW |
679 | /* used by the raid56 code to lock stripes for read/modify/write */ |
680 | struct btrfs_stripe_hash { | |
681 | struct list_head hash_list; | |
682 | wait_queue_head_t wait; | |
683 | spinlock_t lock; | |
684 | }; | |
685 | ||
686 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
687 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
688 | struct list_head stripe_cache; |
689 | spinlock_t cache_lock; | |
690 | int cache_size; | |
691 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
692 | }; |
693 | ||
694 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
695 | ||
21c7e756 MX |
696 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
697 | ||
097b8a7c | 698 | /* fs_info */ |
5d4f98a2 | 699 | struct reloc_control; |
0b86a832 | 700 | struct btrfs_device; |
8a4b83cc | 701 | struct btrfs_fs_devices; |
c9e9f97b | 702 | struct btrfs_balance_control; |
16cdcec7 | 703 | struct btrfs_delayed_root; |
afcdd129 JB |
704 | |
705 | #define BTRFS_FS_BARRIER 1 | |
706 | #define BTRFS_FS_CLOSING_START 2 | |
707 | #define BTRFS_FS_CLOSING_DONE 3 | |
708 | #define BTRFS_FS_LOG_RECOVERING 4 | |
709 | #define BTRFS_FS_OPEN 5 | |
710 | #define BTRFS_FS_QUOTA_ENABLED 6 | |
711 | #define BTRFS_FS_QUOTA_ENABLING 7 | |
712 | #define BTRFS_FS_QUOTA_DISABLING 8 | |
713 | #define BTRFS_FS_UPDATE_UUID_TREE_GEN 9 | |
714 | #define BTRFS_FS_CREATING_FREE_SPACE_TREE 10 | |
715 | #define BTRFS_FS_BTREE_ERR 11 | |
716 | #define BTRFS_FS_LOG1_ERR 12 | |
717 | #define BTRFS_FS_LOG2_ERR 13 | |
f29efe29 | 718 | #define BTRFS_FS_QUOTA_OVERRIDE 14 |
fac03c8d DS |
719 | /* Used to record internally whether fs has been frozen */ |
720 | #define BTRFS_FS_FROZEN 15 | |
f29efe29 | 721 | |
171938e5 DS |
722 | /* |
723 | * Indicate that a whole-filesystem exclusive operation is running | |
724 | * (device replace, resize, device add/delete, balance) | |
725 | */ | |
726 | #define BTRFS_FS_EXCL_OP 14 | |
afcdd129 | 727 | |
9f5fae2f | 728 | struct btrfs_fs_info { |
5f39d397 | 729 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 730 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
afcdd129 | 731 | unsigned long flags; |
62e2749e CM |
732 | struct btrfs_root *extent_root; |
733 | struct btrfs_root *tree_root; | |
0b86a832 CM |
734 | struct btrfs_root *chunk_root; |
735 | struct btrfs_root *dev_root; | |
3de4586c | 736 | struct btrfs_root *fs_root; |
d20f7043 | 737 | struct btrfs_root *csum_root; |
416ac51d | 738 | struct btrfs_root *quota_root; |
f7a81ea4 | 739 | struct btrfs_root *uuid_root; |
a5ed9182 | 740 | struct btrfs_root *free_space_root; |
e02119d5 CM |
741 | |
742 | /* the log root tree is a directory of all the other log roots */ | |
743 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
744 | |
745 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 746 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 747 | |
0f9dd46c JB |
748 | /* block group cache stuff */ |
749 | spinlock_t block_group_cache_lock; | |
a1897fdd | 750 | u64 first_logical_byte; |
0f9dd46c JB |
751 | struct rb_root block_group_cache_tree; |
752 | ||
2bf64758 | 753 | /* keep track of unallocated space */ |
a5ed45f8 | 754 | atomic64_t free_chunk_space; |
2bf64758 | 755 | |
11833d66 YZ |
756 | struct extent_io_tree freed_extents[2]; |
757 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 758 | |
0b86a832 CM |
759 | /* logical->physical extent mapping */ |
760 | struct btrfs_mapping_tree mapping_tree; | |
761 | ||
16cdcec7 MX |
762 | /* |
763 | * block reservation for extent, checksum, root tree and | |
764 | * delayed dir index item | |
765 | */ | |
f0486c68 YZ |
766 | struct btrfs_block_rsv global_block_rsv; |
767 | /* block reservation for delay allocation */ | |
768 | struct btrfs_block_rsv delalloc_block_rsv; | |
769 | /* block reservation for metadata operations */ | |
770 | struct btrfs_block_rsv trans_block_rsv; | |
771 | /* block reservation for chunk tree */ | |
772 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
773 | /* block reservation for delayed operations */ |
774 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
775 | |
776 | struct btrfs_block_rsv empty_block_rsv; | |
777 | ||
293ffd5f | 778 | u64 generation; |
15ee9bc7 | 779 | u64 last_trans_committed; |
0a2b2a84 | 780 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
781 | |
782 | /* | |
783 | * this is updated to the current trans every time a full commit | |
784 | * is required instead of the faster short fsync log commits | |
785 | */ | |
786 | u64 last_trans_log_full_commit; | |
25cd999e | 787 | unsigned long mount_opt; |
572d9ab7 DS |
788 | /* |
789 | * Track requests for actions that need to be done during transaction | |
790 | * commit (like for some mount options). | |
791 | */ | |
792 | unsigned long pending_changes; | |
261507a0 | 793 | unsigned long compress_type:4; |
8b87dc17 | 794 | int commit_interval; |
8c6a3ee6 MX |
795 | /* |
796 | * It is a suggestive number, the read side is safe even it gets a | |
797 | * wrong number because we will write out the data into a regular | |
798 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
799 | * so it is also safe. | |
800 | */ | |
6f568d35 | 801 | u64 max_inline; |
0d0c71b3 | 802 | |
79154b1b | 803 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 804 | wait_queue_head_t transaction_throttle; |
f9295749 | 805 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 806 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 807 | wait_queue_head_t async_submit_wait; |
e02119d5 | 808 | |
ceda0864 MX |
809 | /* |
810 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
811 | * when they are updated. | |
812 | * | |
813 | * Because we do not clear the flags for ever, so we needn't use | |
814 | * the lock on the read side. | |
815 | * | |
816 | * We also needn't use the lock when we mount the fs, because | |
817 | * there is no other task which will update the flag. | |
818 | */ | |
819 | spinlock_t super_lock; | |
6c41761f DS |
820 | struct btrfs_super_block *super_copy; |
821 | struct btrfs_super_block *super_for_commit; | |
e20d96d6 | 822 | struct super_block *sb; |
d98237b3 | 823 | struct inode *btree_inode; |
e02119d5 | 824 | struct mutex tree_log_mutex; |
a74a4b97 CM |
825 | struct mutex transaction_kthread_mutex; |
826 | struct mutex cleaner_mutex; | |
925baedd | 827 | struct mutex chunk_mutex; |
7d9eb12c | 828 | struct mutex volume_mutex; |
53b381b3 | 829 | |
1bbc621e CM |
830 | /* |
831 | * this is taken to make sure we don't set block groups ro after | |
832 | * the free space cache has been allocated on them | |
833 | */ | |
834 | struct mutex ro_block_group_mutex; | |
835 | ||
53b381b3 DW |
836 | /* this is used during read/modify/write to make sure |
837 | * no two ios are trying to mod the same stripe at the same | |
838 | * time | |
839 | */ | |
840 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
841 | ||
5a3f23d5 CM |
842 | /* |
843 | * this protects the ordered operations list only while we are | |
844 | * processing all of the entries on it. This way we make | |
845 | * sure the commit code doesn't find the list temporarily empty | |
846 | * because another function happens to be doing non-waiting preflush | |
847 | * before jumping into the main commit. | |
848 | */ | |
849 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 850 | |
9e351cc8 | 851 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 852 | |
c71bf099 | 853 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 854 | |
c71bf099 | 855 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
856 | struct srcu_struct subvol_srcu; |
857 | ||
a4abeea4 | 858 | spinlock_t trans_lock; |
7585717f CM |
859 | /* |
860 | * the reloc mutex goes with the trans lock, it is taken | |
861 | * during commit to protect us from the relocation code | |
862 | */ | |
863 | struct mutex reloc_mutex; | |
864 | ||
8fd17795 | 865 | struct list_head trans_list; |
facda1e7 | 866 | struct list_head dead_roots; |
11833d66 | 867 | struct list_head caching_block_groups; |
e02119d5 | 868 | |
24bbcf04 YZ |
869 | spinlock_t delayed_iput_lock; |
870 | struct list_head delayed_iputs; | |
c2d6cb16 | 871 | struct mutex cleaner_delayed_iput_mutex; |
24bbcf04 | 872 | |
f29021b2 JS |
873 | /* this protects tree_mod_seq_list */ |
874 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 875 | atomic64_t tree_mod_seq; |
f29021b2 JS |
876 | struct list_head tree_mod_seq_list; |
877 | ||
878 | /* this protects tree_mod_log */ | |
879 | rwlock_t tree_mod_log_lock; | |
880 | struct rb_root tree_mod_log; | |
881 | ||
cb03c743 | 882 | atomic_t nr_async_submits; |
8c8bee1d | 883 | atomic_t async_submit_draining; |
0986fe9e | 884 | atomic_t nr_async_bios; |
771ed689 | 885 | atomic_t async_delalloc_pages; |
a4abeea4 | 886 | atomic_t open_ioctl_trans; |
ce9adaa5 | 887 | |
3eaa2885 | 888 | /* |
199c2a9c | 889 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 890 | */ |
199c2a9c | 891 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
892 | |
893 | /* | |
199c2a9c MX |
894 | * all fs/file tree roots in which there are data=ordered extents |
895 | * pending writeback are added into this list. | |
896 | * | |
5a3f23d5 CM |
897 | * these can span multiple transactions and basically include |
898 | * every dirty data page that isn't from nodatacow | |
899 | */ | |
199c2a9c | 900 | struct list_head ordered_roots; |
5a3f23d5 | 901 | |
573bfb72 | 902 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
903 | spinlock_t delalloc_root_lock; |
904 | /* all fs/file tree roots that have delalloc inodes. */ | |
905 | struct list_head delalloc_roots; | |
3eaa2885 | 906 | |
8b712842 CM |
907 | /* |
908 | * there is a pool of worker threads for checksumming during writes | |
909 | * and a pool for checksumming after reads. This is because readers | |
910 | * can run with FS locks held, and the writers may be waiting for | |
911 | * those locks. We don't want ordering in the pending list to cause | |
912 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
913 | * |
914 | * A third pool does submit_bio to avoid deadlocking with the other | |
915 | * two | |
8b712842 | 916 | */ |
d458b054 QW |
917 | struct btrfs_workqueue *workers; |
918 | struct btrfs_workqueue *delalloc_workers; | |
919 | struct btrfs_workqueue *flush_workers; | |
920 | struct btrfs_workqueue *endio_workers; | |
921 | struct btrfs_workqueue *endio_meta_workers; | |
922 | struct btrfs_workqueue *endio_raid56_workers; | |
8b110e39 | 923 | struct btrfs_workqueue *endio_repair_workers; |
d458b054 QW |
924 | struct btrfs_workqueue *rmw_workers; |
925 | struct btrfs_workqueue *endio_meta_write_workers; | |
926 | struct btrfs_workqueue *endio_write_workers; | |
927 | struct btrfs_workqueue *endio_freespace_worker; | |
928 | struct btrfs_workqueue *submit_workers; | |
929 | struct btrfs_workqueue *caching_workers; | |
930 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 931 | |
247e743c CM |
932 | /* |
933 | * fixup workers take dirty pages that didn't properly go through | |
934 | * the cow mechanism and make them safe to write. It happens | |
935 | * for the sys_munmap function call path | |
936 | */ | |
d458b054 QW |
937 | struct btrfs_workqueue *fixup_workers; |
938 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b CM |
939 | |
940 | /* the extent workers do delayed refs on the extent allocation tree */ | |
941 | struct btrfs_workqueue *extent_workers; | |
a74a4b97 CM |
942 | struct task_struct *transaction_kthread; |
943 | struct task_struct *cleaner_kthread; | |
4543df7e | 944 | int thread_pool_size; |
8b712842 | 945 | |
6ab0a202 | 946 | struct kobject *space_info_kobj; |
9f5fae2f | 947 | |
324ae4df | 948 | u64 total_pinned; |
b9473439 | 949 | |
e2d84521 MX |
950 | /* used to keep from writing metadata until there is a nice batch */ |
951 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 952 | struct percpu_counter delalloc_bytes; |
e2d84521 | 953 | s32 dirty_metadata_batch; |
963d678b MX |
954 | s32 delalloc_batch; |
955 | ||
0b86a832 CM |
956 | struct list_head dirty_cowonly_roots; |
957 | ||
8a4b83cc | 958 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
959 | |
960 | /* | |
961 | * the space_info list is almost entirely read only. It only changes | |
962 | * when we add a new raid type to the FS, and that happens | |
963 | * very rarely. RCU is used to protect it. | |
964 | */ | |
6324fbf3 | 965 | struct list_head space_info; |
4184ea7f | 966 | |
b4d7c3c9 LZ |
967 | struct btrfs_space_info *data_sinfo; |
968 | ||
5d4f98a2 YZ |
969 | struct reloc_control *reloc_ctl; |
970 | ||
fa9c0d79 CM |
971 | /* data_alloc_cluster is only used in ssd mode */ |
972 | struct btrfs_free_cluster data_alloc_cluster; | |
973 | ||
974 | /* all metadata allocations go through this cluster */ | |
975 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 976 | |
4cb5300b CM |
977 | /* auto defrag inodes go here */ |
978 | spinlock_t defrag_inodes_lock; | |
979 | struct rb_root defrag_inodes; | |
980 | atomic_t defrag_running; | |
981 | ||
de98ced9 MX |
982 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
983 | seqlock_t profiles_lock; | |
a46d11a8 ID |
984 | /* |
985 | * these three are in extended format (availability of single | |
986 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
987 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
988 | */ | |
d18a2c44 CM |
989 | u64 avail_data_alloc_bits; |
990 | u64 avail_metadata_alloc_bits; | |
991 | u64 avail_system_alloc_bits; | |
788f20eb | 992 | |
c9e9f97b ID |
993 | /* restriper state */ |
994 | spinlock_t balance_lock; | |
995 | struct mutex balance_mutex; | |
837d5b6e ID |
996 | atomic_t balance_running; |
997 | atomic_t balance_pause_req; | |
a7e99c69 | 998 | atomic_t balance_cancel_req; |
c9e9f97b | 999 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1000 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1001 | |
97e728d4 JB |
1002 | unsigned data_chunk_allocations; |
1003 | unsigned metadata_ratio; | |
1004 | ||
788f20eb | 1005 | void *bdev_holder; |
acce952b | 1006 | |
a2de733c AJ |
1007 | /* private scrub information */ |
1008 | struct mutex scrub_lock; | |
1009 | atomic_t scrubs_running; | |
1010 | atomic_t scrub_pause_req; | |
1011 | atomic_t scrubs_paused; | |
1012 | atomic_t scrub_cancel_req; | |
1013 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 1014 | int scrub_workers_refcnt; |
d458b054 QW |
1015 | struct btrfs_workqueue *scrub_workers; |
1016 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
1017 | struct btrfs_workqueue *scrub_nocow_workers; | |
20b2e302 | 1018 | struct btrfs_workqueue *scrub_parity_workers; |
a2de733c | 1019 | |
21adbd5c SB |
1020 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1021 | u32 check_integrity_print_mask; | |
1022 | #endif | |
416ac51d AJ |
1023 | /* is qgroup tracking in a consistent state? */ |
1024 | u64 qgroup_flags; | |
1025 | ||
1026 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1027 | struct rb_root qgroup_tree; | |
fcebe456 | 1028 | struct rb_root qgroup_op_tree; |
416ac51d | 1029 | spinlock_t qgroup_lock; |
fcebe456 JB |
1030 | spinlock_t qgroup_op_lock; |
1031 | atomic_t qgroup_op_seq; | |
416ac51d | 1032 | |
1e8f9158 WS |
1033 | /* |
1034 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1035 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1036 | */ | |
1037 | struct ulist *qgroup_ulist; | |
1038 | ||
f2f6ed3d WS |
1039 | /* protect user change for quota operations */ |
1040 | struct mutex qgroup_ioctl_lock; | |
1041 | ||
416ac51d AJ |
1042 | /* list of dirty qgroups to be written at next commit */ |
1043 | struct list_head dirty_qgroups; | |
1044 | ||
e69bcee3 | 1045 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 1046 | u64 qgroup_seq; |
21adbd5c | 1047 | |
2f232036 JS |
1048 | /* qgroup rescan items */ |
1049 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1050 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1051 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1052 | struct completion qgroup_rescan_completion; |
b382a324 | 1053 | struct btrfs_work qgroup_rescan_work; |
d2c609b8 | 1054 | bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ |
2f232036 | 1055 | |
acce952b | 1056 | /* filesystem state */ |
87533c47 | 1057 | unsigned long fs_state; |
16cdcec7 MX |
1058 | |
1059 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1060 | |
90519d66 AJ |
1061 | /* readahead tree */ |
1062 | spinlock_t reada_lock; | |
1063 | struct radix_tree_root reada_tree; | |
531f4b1a | 1064 | |
2fefd558 ZL |
1065 | /* readahead works cnt */ |
1066 | atomic_t reada_works_cnt; | |
1067 | ||
f28491e0 JB |
1068 | /* Extent buffer radix tree */ |
1069 | spinlock_t buffer_lock; | |
1070 | struct radix_tree_root buffer_radix; | |
1071 | ||
af31f5e5 CM |
1072 | /* next backup root to be overwritten */ |
1073 | int backup_root_index; | |
5af3e8cc SB |
1074 | |
1075 | int num_tolerated_disk_barrier_failures; | |
e922e087 SB |
1076 | |
1077 | /* device replace state */ | |
1078 | struct btrfs_dev_replace dev_replace; | |
5ac00add | 1079 | |
c404e0dc MX |
1080 | struct percpu_counter bio_counter; |
1081 | wait_queue_head_t replace_wait; | |
1082 | ||
803b2f54 | 1083 | struct semaphore uuid_tree_rescan_sem; |
21c7e756 MX |
1084 | |
1085 | /* Used to reclaim the metadata space in the background. */ | |
1086 | struct work_struct async_reclaim_work; | |
47ab2a6c JB |
1087 | |
1088 | spinlock_t unused_bgs_lock; | |
1089 | struct list_head unused_bgs; | |
d4b450cd | 1090 | struct mutex unused_bg_unpin_mutex; |
67c5e7d4 | 1091 | struct mutex delete_unused_bgs_mutex; |
f667aef6 QW |
1092 | |
1093 | /* For btrfs to record security options */ | |
1094 | struct security_mnt_opts security_opts; | |
04216820 FM |
1095 | |
1096 | /* | |
1097 | * Chunks that can't be freed yet (under a trim/discard operation) | |
1098 | * and will be latter freed. Protected by fs_info->chunk_mutex. | |
1099 | */ | |
1100 | struct list_head pinned_chunks; | |
511711af | 1101 | |
da17066c JM |
1102 | /* Cached block sizes */ |
1103 | u32 nodesize; | |
1104 | u32 sectorsize; | |
1105 | u32 stripesize; | |
324ae4df | 1106 | }; |
0b86a832 | 1107 | |
da17066c JM |
1108 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
1109 | { | |
1110 | return sb->s_fs_info; | |
1111 | } | |
1112 | ||
8257b2dc MX |
1113 | struct btrfs_subvolume_writers { |
1114 | struct percpu_counter counter; | |
1115 | wait_queue_head_t wait; | |
1116 | }; | |
1117 | ||
27cdeb70 MX |
1118 | /* |
1119 | * The state of btrfs root | |
1120 | */ | |
1121 | /* | |
1122 | * btrfs_record_root_in_trans is a multi-step process, | |
1123 | * and it can race with the balancing code. But the | |
1124 | * race is very small, and only the first time the root | |
1125 | * is added to each transaction. So IN_TRANS_SETUP | |
1126 | * is used to tell us when more checks are required | |
1127 | */ | |
1128 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 | |
1129 | #define BTRFS_ROOT_REF_COWS 1 | |
1130 | #define BTRFS_ROOT_TRACK_DIRTY 2 | |
1131 | #define BTRFS_ROOT_IN_RADIX 3 | |
f5ee5c9a JM |
1132 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 4 |
1133 | #define BTRFS_ROOT_DEFRAG_RUNNING 5 | |
1134 | #define BTRFS_ROOT_FORCE_COW 6 | |
1135 | #define BTRFS_ROOT_MULTI_LOG_TASKS 7 | |
1136 | #define BTRFS_ROOT_DIRTY 8 | |
27cdeb70 | 1137 | |
9f5fae2f CM |
1138 | /* |
1139 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1140 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1141 | */ |
1142 | struct btrfs_root { | |
5f39d397 | 1143 | struct extent_buffer *node; |
925baedd | 1144 | |
5f39d397 | 1145 | struct extent_buffer *commit_root; |
e02119d5 | 1146 | struct btrfs_root *log_root; |
1a40e23b | 1147 | struct btrfs_root *reloc_root; |
31153d81 | 1148 | |
27cdeb70 | 1149 | unsigned long state; |
62e2749e CM |
1150 | struct btrfs_root_item root_item; |
1151 | struct btrfs_key root_key; | |
9f5fae2f | 1152 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1153 | struct extent_io_tree dirty_log_pages; |
1154 | ||
a2135011 | 1155 | struct mutex objectid_mutex; |
7237f183 | 1156 | |
f0486c68 YZ |
1157 | spinlock_t accounting_lock; |
1158 | struct btrfs_block_rsv *block_rsv; | |
1159 | ||
581bb050 | 1160 | /* free ino cache stuff */ |
581bb050 | 1161 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1162 | enum btrfs_caching_type ino_cache_state; |
1163 | spinlock_t ino_cache_lock; | |
1164 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1165 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1166 | u64 ino_cache_progress; |
1167 | struct inode *ino_cache_inode; | |
581bb050 | 1168 | |
e02119d5 | 1169 | struct mutex log_mutex; |
7237f183 YZ |
1170 | wait_queue_head_t log_writer_wait; |
1171 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1172 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1173 | atomic_t log_writers; |
1174 | atomic_t log_commit[2]; | |
2ecb7923 | 1175 | atomic_t log_batch; |
bb14a59b | 1176 | int log_transid; |
d1433deb MX |
1177 | /* No matter the commit succeeds or not*/ |
1178 | int log_transid_committed; | |
1179 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1180 | int last_log_commit; |
ff782e0a | 1181 | pid_t log_start_pid; |
ea8c2819 | 1182 | |
0f7d52f4 CM |
1183 | u64 objectid; |
1184 | u64 last_trans; | |
5f39d397 | 1185 | |
9f5fae2f | 1186 | u32 type; |
13a8a7c8 YZ |
1187 | |
1188 | u64 highest_objectid; | |
7585717f | 1189 | |
05653ef3 | 1190 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
0d4cf4e6 | 1191 | /* only used with CONFIG_BTRFS_FS_RUN_SANITY_TESTS is enabled */ |
faa2dbf0 | 1192 | u64 alloc_bytenr; |
05653ef3 | 1193 | #endif |
faa2dbf0 | 1194 | |
3f157a2f | 1195 | u64 defrag_trans_start; |
6702ed49 | 1196 | struct btrfs_key defrag_progress; |
0ef3e66b | 1197 | struct btrfs_key defrag_max; |
58176a96 | 1198 | char *name; |
0b86a832 CM |
1199 | |
1200 | /* the dirty list is only used by non-reference counted roots */ | |
1201 | struct list_head dirty_list; | |
7b128766 | 1202 | |
5d4f98a2 YZ |
1203 | struct list_head root_list; |
1204 | ||
2ab28f32 JB |
1205 | spinlock_t log_extents_lock[2]; |
1206 | struct list_head logged_list[2]; | |
1207 | ||
d68fc57b | 1208 | spinlock_t orphan_lock; |
8a35d95f | 1209 | atomic_t orphan_inodes; |
d68fc57b | 1210 | struct btrfs_block_rsv *orphan_block_rsv; |
d68fc57b | 1211 | int orphan_cleanup_state; |
3394e160 | 1212 | |
5d4f98a2 YZ |
1213 | spinlock_t inode_lock; |
1214 | /* red-black tree that keeps track of in-memory inodes */ | |
1215 | struct rb_root inode_tree; | |
1216 | ||
16cdcec7 MX |
1217 | /* |
1218 | * radix tree that keeps track of delayed nodes of every inode, | |
1219 | * protected by inode_lock | |
1220 | */ | |
1221 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1222 | /* |
1223 | * right now this just gets used so that a root has its own devid | |
1224 | * for stat. It may be used for more later | |
1225 | */ | |
0ee5dc67 | 1226 | dev_t anon_dev; |
f1ebcc74 | 1227 | |
5f3ab90a | 1228 | spinlock_t root_item_lock; |
0700cea7 | 1229 | refcount_t refs; |
eb73c1b7 | 1230 | |
573bfb72 | 1231 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1232 | spinlock_t delalloc_lock; |
1233 | /* | |
1234 | * all of the inodes that have delalloc bytes. It is possible for | |
1235 | * this list to be empty even when there is still dirty data=ordered | |
1236 | * extents waiting to finish IO. | |
1237 | */ | |
1238 | struct list_head delalloc_inodes; | |
1239 | struct list_head delalloc_root; | |
1240 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1241 | |
1242 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1243 | /* |
1244 | * this is used by the balancing code to wait for all the pending | |
1245 | * ordered extents | |
1246 | */ | |
1247 | spinlock_t ordered_extent_lock; | |
1248 | ||
1249 | /* | |
1250 | * all of the data=ordered extents pending writeback | |
1251 | * these can span multiple transactions and basically include | |
1252 | * every dirty data page that isn't from nodatacow | |
1253 | */ | |
1254 | struct list_head ordered_extents; | |
1255 | struct list_head ordered_root; | |
1256 | u64 nr_ordered_extents; | |
2c686537 DS |
1257 | |
1258 | /* | |
1259 | * Number of currently running SEND ioctls to prevent | |
1260 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1261 | */ | |
1262 | int send_in_progress; | |
8257b2dc MX |
1263 | struct btrfs_subvolume_writers *subv_writers; |
1264 | atomic_t will_be_snapshoted; | |
55eeaf05 QW |
1265 | |
1266 | /* For qgroup metadata space reserve */ | |
ce0dcee6 | 1267 | atomic64_t qgroup_meta_rsv; |
62e2749e | 1268 | }; |
118c701e | 1269 | |
da17066c JM |
1270 | static inline u32 btrfs_inode_sectorsize(const struct inode *inode) |
1271 | { | |
1272 | return btrfs_sb(inode->i_sb)->sectorsize; | |
1273 | } | |
62e2749e | 1274 | |
da17066c | 1275 | static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1276 | { |
118c701e NB |
1277 | |
1278 | return info->nodesize - sizeof(struct btrfs_header); | |
1db1ff92 JM |
1279 | } |
1280 | ||
3d9ec8c4 NB |
1281 | #define BTRFS_LEAF_DATA_OFFSET offsetof(struct btrfs_leaf, items) |
1282 | ||
da17066c | 1283 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1284 | { |
da17066c | 1285 | return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item); |
1db1ff92 JM |
1286 | } |
1287 | ||
da17066c | 1288 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info) |
1db1ff92 | 1289 | { |
da17066c | 1290 | return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr); |
1db1ff92 JM |
1291 | } |
1292 | ||
1293 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ | |
1294 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
da17066c | 1295 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1296 | { |
da17066c | 1297 | return BTRFS_MAX_ITEM_SIZE(info) - |
1db1ff92 JM |
1298 | BTRFS_FILE_EXTENT_INLINE_DATA_START; |
1299 | } | |
1300 | ||
da17066c | 1301 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info) |
1db1ff92 | 1302 | { |
da17066c | 1303 | return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item); |
1db1ff92 JM |
1304 | } |
1305 | ||
0942caa3 DS |
1306 | /* |
1307 | * Flags for mount options. | |
1308 | * | |
1309 | * Note: don't forget to add new options to btrfs_show_options() | |
1310 | */ | |
21ad10cf CM |
1311 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1312 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1313 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1314 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1315 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1316 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1317 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1318 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1319 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1320 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1321 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1322 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1323 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1324 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1325 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1326 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1327 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1328 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
8dcddfa0 | 1329 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
9555c6c1 | 1330 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1331 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1332 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1333 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 1334 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
d0bd4560 JB |
1335 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
1336 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) | |
f7d3d2f9 | 1337 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
96da0919 | 1338 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
b6cda9bc | 1339 | |
8b87dc17 | 1340 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1341 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1342 | |
b6cda9bc CM |
1343 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1344 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1345 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
3cdde224 | 1346 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
b6cda9bc | 1347 | BTRFS_MOUNT_##opt) |
572d9ab7 | 1348 | |
3cdde224 | 1349 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1350 | { \ |
3cdde224 JM |
1351 | if (!btrfs_test_opt(fs_info, opt)) \ |
1352 | btrfs_info(fs_info, fmt, ##args); \ | |
1353 | btrfs_set_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1354 | } |
1355 | ||
3cdde224 | 1356 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1357 | { \ |
3cdde224 JM |
1358 | if (btrfs_test_opt(fs_info, opt)) \ |
1359 | btrfs_info(fs_info, fmt, ##args); \ | |
1360 | btrfs_clear_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1361 | } |
1362 | ||
d0bd4560 JB |
1363 | #ifdef CONFIG_BTRFS_DEBUG |
1364 | static inline int | |
2ff7e61e | 1365 | btrfs_should_fragment_free_space(struct btrfs_block_group_cache *block_group) |
d0bd4560 | 1366 | { |
2ff7e61e | 1367 | struct btrfs_fs_info *fs_info = block_group->fs_info; |
0b246afa JM |
1368 | |
1369 | return (btrfs_test_opt(fs_info, FRAGMENT_METADATA) && | |
d0bd4560 | 1370 | block_group->flags & BTRFS_BLOCK_GROUP_METADATA) || |
0b246afa | 1371 | (btrfs_test_opt(fs_info, FRAGMENT_DATA) && |
d0bd4560 JB |
1372 | block_group->flags & BTRFS_BLOCK_GROUP_DATA); |
1373 | } | |
1374 | #endif | |
1375 | ||
572d9ab7 DS |
1376 | /* |
1377 | * Requests for changes that need to be done during transaction commit. | |
1378 | * | |
1379 | * Internal mount options that are used for special handling of the real | |
1380 | * mount options (eg. cannot be set during remount and have to be set during | |
1381 | * transaction commit) | |
1382 | */ | |
1383 | ||
7e1876ac DS |
1384 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
1385 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) | |
d51033d0 | 1386 | #define BTRFS_PENDING_COMMIT (2) |
7e1876ac | 1387 | |
572d9ab7 DS |
1388 | #define btrfs_test_pending(info, opt) \ |
1389 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1390 | #define btrfs_set_pending(info, opt) \ | |
1391 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1392 | #define btrfs_clear_pending(info, opt) \ | |
1393 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1394 | ||
1395 | /* | |
1396 | * Helpers for setting pending mount option changes. | |
1397 | * | |
1398 | * Expects corresponding macros | |
1399 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1400 | */ | |
1401 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1402 | do { \ | |
1403 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1404 | btrfs_info((info), fmt, ##args); \ | |
1405 | btrfs_set_pending((info), SET_##opt); \ | |
1406 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1407 | } \ | |
1408 | } while(0) | |
1409 | ||
1410 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1411 | do { \ | |
1412 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1413 | btrfs_info((info), fmt, ##args); \ | |
1414 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1415 | btrfs_clear_pending((info), SET_##opt); \ | |
1416 | } \ | |
1417 | } while(0) | |
1418 | ||
b98b6767 Y |
1419 | /* |
1420 | * Inode flags | |
1421 | */ | |
fdebe2bd Y |
1422 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1423 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1424 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1425 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1426 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1427 | #define BTRFS_INODE_SYNC (1 << 5) |
1428 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1429 | #define BTRFS_INODE_APPEND (1 << 7) | |
1430 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1431 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1432 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1433 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1434 | |
08fe4db1 LZ |
1435 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1436 | ||
cfed81a0 CM |
1437 | struct btrfs_map_token { |
1438 | struct extent_buffer *eb; | |
1439 | char *kaddr; | |
1440 | unsigned long offset; | |
1441 | }; | |
1442 | ||
2e78c927 CR |
1443 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
1444 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) | |
1445 | ||
cfed81a0 CM |
1446 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
1447 | { | |
ad914559 | 1448 | token->kaddr = NULL; |
cfed81a0 CM |
1449 | } |
1450 | ||
01327610 | 1451 | /* some macros to generate set/get functions for the struct fields. This |
5f39d397 CM |
1452 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
1453 | * one for u8: | |
1454 | */ | |
1455 | #define le8_to_cpu(v) (v) | |
1456 | #define cpu_to_le8(v) (v) | |
1457 | #define __le8 u8 | |
1458 | ||
62e85577 | 1459 | #define read_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1460 | read_extent_buffer(eb, (char *)(result), \ |
1461 | ((unsigned long)(ptr)) + \ | |
1462 | offsetof(type, member), \ | |
1463 | sizeof(((type *)0)->member))) | |
1464 | ||
62e85577 | 1465 | #define write_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1466 | write_extent_buffer(eb, (char *)(result), \ |
1467 | ((unsigned long)(ptr)) + \ | |
1468 | offsetof(type, member), \ | |
1469 | sizeof(((type *)0)->member))) | |
1470 | ||
18077bb4 LZ |
1471 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1472 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1473 | unsigned long off, \ | |
1474 | struct btrfs_map_token *token); \ | |
1475 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1476 | unsigned long off, u##bits val, \ | |
1477 | struct btrfs_map_token *token); \ | |
1478 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ | |
1479 | unsigned long off) \ | |
1480 | { \ | |
1481 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1482 | } \ | |
1483 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ | |
1484 | unsigned long off, u##bits val) \ | |
1485 | { \ | |
1486 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1487 | } | |
1488 | ||
1489 | DECLARE_BTRFS_SETGET_BITS(8) | |
1490 | DECLARE_BTRFS_SETGET_BITS(16) | |
1491 | DECLARE_BTRFS_SETGET_BITS(32) | |
1492 | DECLARE_BTRFS_SETGET_BITS(64) | |
1493 | ||
5f39d397 | 1494 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
18077bb4 LZ |
1495 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
1496 | { \ | |
1497 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1498 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1499 | } \ | |
1500 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1501 | u##bits val) \ | |
1502 | { \ | |
1503 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1504 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1505 | } \ | |
1506 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ | |
1507 | struct btrfs_map_token *token) \ | |
1508 | { \ | |
1509 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1510 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1511 | } \ | |
1512 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
1513 | type *s, u##bits val, \ | |
1514 | struct btrfs_map_token *token) \ | |
1515 | { \ | |
1516 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1517 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
1518 | } | |
5f39d397 CM |
1519 | |
1520 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1521 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1522 | { \ | |
727011e0 | 1523 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1524 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1525 | return res; \ |
5f39d397 CM |
1526 | } \ |
1527 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1528 | u##bits val) \ | |
1529 | { \ | |
727011e0 | 1530 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1531 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1532 | } |
9078a3e1 | 1533 | |
5f39d397 CM |
1534 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1535 | static inline u##bits btrfs_##name(type *s) \ | |
1536 | { \ | |
1537 | return le##bits##_to_cpu(s->member); \ | |
1538 | } \ | |
1539 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1540 | { \ | |
1541 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1542 | } |
1543 | ||
eca152ed NB |
1544 | |
1545 | static inline u64 btrfs_device_total_bytes(struct extent_buffer *eb, | |
1546 | struct btrfs_dev_item *s) | |
1547 | { | |
1548 | BUILD_BUG_ON(sizeof(u64) != | |
1549 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
1550 | return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, | |
1551 | total_bytes)); | |
1552 | } | |
1553 | static inline void btrfs_set_device_total_bytes(struct extent_buffer *eb, | |
1554 | struct btrfs_dev_item *s, | |
1555 | u64 val) | |
1556 | { | |
1557 | BUILD_BUG_ON(sizeof(u64) != | |
1558 | sizeof(((struct btrfs_dev_item *)0))->total_bytes); | |
7dfb8be1 | 1559 | WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize)); |
eca152ed NB |
1560 | btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val); |
1561 | } | |
1562 | ||
1563 | ||
0b86a832 | 1564 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
0b86a832 CM |
1565 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
1566 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1567 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1568 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1569 | start_offset, 64); | |
0b86a832 CM |
1570 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1571 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1572 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1573 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1574 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1575 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1576 | |
8a4b83cc CM |
1577 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1578 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1579 | total_bytes, 64); | |
1580 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1581 | bytes_used, 64); | |
1582 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1583 | io_align, 32); | |
1584 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1585 | io_width, 32); | |
1586 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1587 | sector_size, 32); | |
1588 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1589 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1590 | dev_group, 32); | |
1591 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1592 | seek_speed, 8); | |
1593 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1594 | bandwidth, 8); | |
2b82032c YZ |
1595 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1596 | generation, 64); | |
8a4b83cc | 1597 | |
410ba3a2 | 1598 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1599 | { |
410ba3a2 | 1600 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1601 | } |
1602 | ||
1473b24e | 1603 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1604 | { |
1473b24e | 1605 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1606 | } |
1607 | ||
e17cade2 | 1608 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1609 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1610 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1611 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1612 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1613 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1614 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1615 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1616 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1617 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1618 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1619 | ||
e17cade2 CM |
1620 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1621 | { | |
1622 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1623 | } | |
1624 | ||
1625 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1626 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1627 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1628 | stripe_len, 64); | |
1629 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1630 | io_align, 32); | |
1631 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1632 | io_width, 32); | |
1633 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1634 | sector_size, 32); | |
1635 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1636 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1637 | num_stripes, 16); | |
321aecc6 CM |
1638 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1639 | sub_stripes, 16); | |
0b86a832 CM |
1640 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1641 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1642 | ||
1643 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1644 | int nr) | |
1645 | { | |
1646 | unsigned long offset = (unsigned long)c; | |
1647 | offset += offsetof(struct btrfs_chunk, stripe); | |
1648 | offset += nr * sizeof(struct btrfs_stripe); | |
1649 | return (struct btrfs_stripe *)offset; | |
1650 | } | |
1651 | ||
a443755f CM |
1652 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1653 | { | |
1654 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1655 | } | |
1656 | ||
0b86a832 CM |
1657 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1658 | struct btrfs_chunk *c, int nr) | |
1659 | { | |
1660 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1661 | } | |
1662 | ||
0b86a832 CM |
1663 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1664 | struct btrfs_chunk *c, int nr) | |
1665 | { | |
1666 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1667 | } | |
1668 | ||
5f39d397 CM |
1669 | /* struct btrfs_block_group_item */ |
1670 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1671 | used, 64); | |
1672 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1673 | used, 64); | |
0b86a832 CM |
1674 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1675 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1676 | |
1677 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1678 | struct btrfs_block_group_item, chunk_objectid, 64); |
1679 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1680 | struct btrfs_block_group_item, flags, 64); | |
1681 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1682 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1683 | |
208acb8c OS |
1684 | /* struct btrfs_free_space_info */ |
1685 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1686 | extent_count, 32); | |
1687 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1688 | ||
3954401f CM |
1689 | /* struct btrfs_inode_ref */ |
1690 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1691 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1692 | |
f186373f MF |
1693 | /* struct btrfs_inode_extref */ |
1694 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1695 | parent_objectid, 64); | |
1696 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1697 | name_len, 16); | |
1698 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1699 | ||
5f39d397 CM |
1700 | /* struct btrfs_inode_item */ |
1701 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1702 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1703 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1704 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1705 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1706 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1707 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1708 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1709 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1710 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1711 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1712 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1713 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1714 | generation, 64); | |
1715 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1716 | sequence, 64); | |
1717 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1718 | transid, 64); | |
1719 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1720 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1721 | nbytes, 64); | |
1722 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1723 | block_group, 64); | |
1724 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1725 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1726 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1727 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1728 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1729 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1730 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1731 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1732 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1733 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1734 | |
0b86a832 | 1735 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1736 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1737 | chunk_tree, 64); | |
1738 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1739 | chunk_objectid, 64); | |
1740 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1741 | chunk_offset, 64); | |
0b86a832 CM |
1742 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1743 | ||
231e88f4 | 1744 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
1745 | { |
1746 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 1747 | return (unsigned long)dev + ptr; |
e17cade2 CM |
1748 | } |
1749 | ||
5d4f98a2 YZ |
1750 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1751 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1752 | generation, 64); | |
1753 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1754 | |
5d4f98a2 YZ |
1755 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1756 | ||
1757 | ||
1758 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1759 | ||
1760 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1761 | struct btrfs_tree_block_info *item, | |
1762 | struct btrfs_disk_key *key) | |
1763 | { | |
1764 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1765 | } | |
1766 | ||
1767 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1768 | struct btrfs_tree_block_info *item, | |
1769 | struct btrfs_disk_key *key) | |
1770 | { | |
1771 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1772 | } | |
e20d96d6 | 1773 | |
5d4f98a2 YZ |
1774 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1775 | root, 64); | |
1776 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1777 | objectid, 64); | |
1778 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1779 | offset, 64); | |
1780 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1781 | count, 32); | |
1782 | ||
1783 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1784 | count, 32); | |
1785 | ||
1786 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1787 | type, 8); | |
1788 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1789 | offset, 64); | |
1790 | ||
1791 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1792 | { | |
1793 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1794 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1795 | return sizeof(struct btrfs_extent_inline_ref); | |
1796 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1797 | return sizeof(struct btrfs_shared_data_ref) + | |
1798 | sizeof(struct btrfs_extent_inline_ref); | |
1799 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1800 | return sizeof(struct btrfs_extent_data_ref) + | |
1801 | offsetof(struct btrfs_extent_inline_ref, offset); | |
1802 | BUG(); | |
1803 | return 0; | |
1804 | } | |
1805 | ||
1806 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1807 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1808 | generation, 64); | |
1809 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1810 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1811 | |
5f39d397 CM |
1812 | /* struct btrfs_node */ |
1813 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1814 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
1815 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
1816 | blockptr, 64); | |
1817 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
1818 | generation, 64); | |
e20d96d6 | 1819 | |
5f39d397 | 1820 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1821 | { |
5f39d397 CM |
1822 | unsigned long ptr; |
1823 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1824 | sizeof(struct btrfs_key_ptr) * nr; | |
1825 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1826 | } |
1827 | ||
5f39d397 CM |
1828 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1829 | int nr, u64 val) | |
cf27e1ee | 1830 | { |
5f39d397 CM |
1831 | unsigned long ptr; |
1832 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1833 | sizeof(struct btrfs_key_ptr) * nr; | |
1834 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1835 | } |
1836 | ||
74493f7a CM |
1837 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1838 | { | |
1839 | unsigned long ptr; | |
1840 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1841 | sizeof(struct btrfs_key_ptr) * nr; | |
1842 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1843 | } | |
1844 | ||
1845 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1846 | int nr, u64 val) | |
1847 | { | |
1848 | unsigned long ptr; | |
1849 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1850 | sizeof(struct btrfs_key_ptr) * nr; | |
1851 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1852 | } | |
1853 | ||
810191ff | 1854 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1855 | { |
5f39d397 CM |
1856 | return offsetof(struct btrfs_node, ptrs) + |
1857 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1858 | } |
1859 | ||
e644d021 CM |
1860 | void btrfs_node_key(struct extent_buffer *eb, |
1861 | struct btrfs_disk_key *disk_key, int nr); | |
1862 | ||
5f39d397 CM |
1863 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1864 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1865 | { |
5f39d397 CM |
1866 | unsigned long ptr; |
1867 | ptr = btrfs_node_key_ptr_offset(nr); | |
1868 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1869 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1870 | } |
1871 | ||
5f39d397 CM |
1872 | /* struct btrfs_item */ |
1873 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1874 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
1875 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
1876 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 1877 | |
5f39d397 | 1878 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1879 | { |
5f39d397 CM |
1880 | return offsetof(struct btrfs_leaf, items) + |
1881 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1882 | } |
1883 | ||
dd3cc16b | 1884 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 1885 | { |
5f39d397 | 1886 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1887 | } |
1888 | ||
5f39d397 CM |
1889 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1890 | struct btrfs_item *item) | |
0783fcfc | 1891 | { |
5f39d397 | 1892 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1893 | } |
1894 | ||
5f39d397 | 1895 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1896 | { |
dd3cc16b | 1897 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1898 | } |
1899 | ||
5f39d397 | 1900 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1901 | { |
dd3cc16b | 1902 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1903 | } |
1904 | ||
5f39d397 | 1905 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1906 | { |
dd3cc16b | 1907 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1908 | } |
1909 | ||
5f39d397 CM |
1910 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1911 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1912 | { |
dd3cc16b | 1913 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1914 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1915 | } |
1916 | ||
5f39d397 CM |
1917 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1918 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1919 | { |
dd3cc16b | 1920 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1921 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1922 | } |
1923 | ||
e02119d5 CM |
1924 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1925 | ||
0660b5af CM |
1926 | /* |
1927 | * struct btrfs_root_ref | |
1928 | */ | |
1929 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1930 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1931 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1932 | ||
5f39d397 | 1933 | /* struct btrfs_dir_item */ |
5103e947 | 1934 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1935 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1936 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1937 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
1938 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
1939 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
1940 | data_len, 16); | |
1941 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
1942 | name_len, 16); | |
1943 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
1944 | transid, 64); | |
1d4f6404 | 1945 | |
5f39d397 CM |
1946 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1947 | struct btrfs_dir_item *item, | |
1948 | struct btrfs_disk_key *key) | |
1d4f6404 | 1949 | { |
5f39d397 | 1950 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1951 | } |
1952 | ||
5f39d397 CM |
1953 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1954 | struct btrfs_dir_item *item, | |
1955 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1956 | { |
5f39d397 | 1957 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1958 | } |
1959 | ||
0af3d00b JB |
1960 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1961 | num_entries, 64); | |
1962 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1963 | num_bitmaps, 64); | |
1964 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1965 | generation, 64); | |
1966 | ||
1967 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
1968 | struct btrfs_free_space_header *h, | |
1969 | struct btrfs_disk_key *key) | |
1970 | { | |
1971 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1972 | } | |
1973 | ||
1974 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1975 | struct btrfs_free_space_header *h, | |
1976 | struct btrfs_disk_key *key) | |
1977 | { | |
1978 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1979 | } | |
1980 | ||
5f39d397 CM |
1981 | /* struct btrfs_disk_key */ |
1982 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1983 | objectid, 64); | |
1984 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1985 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1986 | |
e2fa7227 | 1987 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
310712b2 | 1988 | const struct btrfs_disk_key *disk) |
e2fa7227 CM |
1989 | { |
1990 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1991 | cpu->type = disk->type; |
e2fa7227 CM |
1992 | cpu->objectid = le64_to_cpu(disk->objectid); |
1993 | } | |
1994 | ||
1995 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
310712b2 | 1996 | const struct btrfs_key *cpu) |
e2fa7227 CM |
1997 | { |
1998 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1999 | disk->type = cpu->type; |
e2fa7227 CM |
2000 | disk->objectid = cpu_to_le64(cpu->objectid); |
2001 | } | |
2002 | ||
5f39d397 CM |
2003 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
2004 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2005 | { |
5f39d397 CM |
2006 | struct btrfs_disk_key disk_key; |
2007 | btrfs_node_key(eb, &disk_key, nr); | |
2008 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2009 | } |
2010 | ||
5f39d397 CM |
2011 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
2012 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2013 | { |
5f39d397 CM |
2014 | struct btrfs_disk_key disk_key; |
2015 | btrfs_item_key(eb, &disk_key, nr); | |
2016 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2017 | } |
2018 | ||
5f39d397 CM |
2019 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
2020 | struct btrfs_dir_item *item, | |
2021 | struct btrfs_key *key) | |
4d775673 | 2022 | { |
5f39d397 CM |
2023 | struct btrfs_disk_key disk_key; |
2024 | btrfs_dir_item_key(eb, item, &disk_key); | |
2025 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2026 | } |
2027 | ||
310712b2 | 2028 | static inline u8 btrfs_key_type(const struct btrfs_key *key) |
3768f368 | 2029 | { |
5f39d397 | 2030 | return key->type; |
3768f368 CM |
2031 | } |
2032 | ||
5f39d397 | 2033 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2034 | { |
5f39d397 | 2035 | key->type = val; |
3768f368 CM |
2036 | } |
2037 | ||
5f39d397 | 2038 | /* struct btrfs_header */ |
db94535d | 2039 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2040 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2041 | generation, 64); | |
2042 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2043 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2044 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2045 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2046 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2047 | generation, 64); | |
2048 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2049 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2050 | nritems, 32); | |
2051 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2052 | |
63b10fc4 CM |
2053 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
2054 | { | |
2055 | return (btrfs_header_flags(eb) & flag) == flag; | |
2056 | } | |
2057 | ||
2058 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2059 | { | |
2060 | u64 flags = btrfs_header_flags(eb); | |
2061 | btrfs_set_header_flags(eb, flags | flag); | |
2062 | return (flags & flag) == flag; | |
2063 | } | |
2064 | ||
2065 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2066 | { | |
2067 | u64 flags = btrfs_header_flags(eb); | |
2068 | btrfs_set_header_flags(eb, flags & ~flag); | |
2069 | return (flags & flag) == flag; | |
2070 | } | |
2071 | ||
5d4f98a2 YZ |
2072 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2073 | { | |
2074 | u64 flags = btrfs_header_flags(eb); | |
2075 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2076 | } | |
2077 | ||
2078 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2079 | int rev) | |
2080 | { | |
2081 | u64 flags = btrfs_header_flags(eb); | |
2082 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2083 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2084 | btrfs_set_header_flags(eb, flags); | |
2085 | } | |
2086 | ||
0a4e5586 | 2087 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2088 | { |
fba6aa75 | 2089 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2090 | } |
2091 | ||
b308bc2f | 2092 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
e17cade2 | 2093 | { |
b308bc2f | 2094 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2095 | } |
2096 | ||
5f39d397 | 2097 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2098 | { |
d397712b | 2099 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2100 | } |
2101 | ||
5f39d397 | 2102 | /* struct btrfs_root_item */ |
84234f3a YZ |
2103 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2104 | generation, 64); | |
5f39d397 | 2105 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2106 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2107 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2108 | |
84234f3a YZ |
2109 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2110 | generation, 64); | |
db94535d CM |
2111 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2112 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2113 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2114 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2115 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2116 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2117 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2118 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2119 | last_snapshot, 64); | |
8ea05e3a AB |
2120 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2121 | generation_v2, 64); | |
2122 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2123 | ctransid, 64); | |
2124 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2125 | otransid, 64); | |
2126 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2127 | stransid, 64); | |
2128 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2129 | rtransid, 64); | |
123abc88 | 2130 | |
b83cc969 LZ |
2131 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2132 | { | |
6ed3cf2c | 2133 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2134 | } |
2135 | ||
521e0546 DS |
2136 | static inline bool btrfs_root_dead(struct btrfs_root *root) |
2137 | { | |
2138 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2139 | } | |
2140 | ||
af31f5e5 CM |
2141 | /* struct btrfs_root_backup */ |
2142 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2143 | tree_root, 64); | |
2144 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2145 | tree_root_gen, 64); | |
2146 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2147 | tree_root_level, 8); | |
2148 | ||
2149 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2150 | chunk_root, 64); | |
2151 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2152 | chunk_root_gen, 64); | |
2153 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2154 | chunk_root_level, 8); | |
2155 | ||
2156 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2157 | extent_root, 64); | |
2158 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2159 | extent_root_gen, 64); | |
2160 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2161 | extent_root_level, 8); | |
2162 | ||
2163 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2164 | fs_root, 64); | |
2165 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2166 | fs_root_gen, 64); | |
2167 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2168 | fs_root_level, 8); | |
2169 | ||
2170 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2171 | dev_root, 64); | |
2172 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2173 | dev_root_gen, 64); | |
2174 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2175 | dev_root_level, 8); | |
2176 | ||
2177 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2178 | csum_root, 64); | |
2179 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2180 | csum_root_gen, 64); | |
2181 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2182 | csum_root_level, 8); | |
2183 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2184 | total_bytes, 64); | |
2185 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2186 | bytes_used, 64); | |
2187 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2188 | num_devices, 64); | |
2189 | ||
0940ebf6 ID |
2190 | /* struct btrfs_balance_item */ |
2191 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2192 | |
0940ebf6 ID |
2193 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2194 | struct btrfs_balance_item *bi, | |
2195 | struct btrfs_disk_balance_args *ba) | |
2196 | { | |
2197 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2198 | } | |
2199 | ||
2200 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2201 | struct btrfs_balance_item *bi, | |
2202 | struct btrfs_disk_balance_args *ba) | |
2203 | { | |
2204 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2205 | } | |
2206 | ||
2207 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2208 | struct btrfs_balance_item *bi, | |
2209 | struct btrfs_disk_balance_args *ba) | |
2210 | { | |
2211 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2212 | } | |
2213 | ||
2214 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2215 | struct btrfs_balance_item *bi, | |
2216 | struct btrfs_disk_balance_args *ba) | |
2217 | { | |
2218 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2219 | } | |
2220 | ||
2221 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2222 | struct btrfs_balance_item *bi, | |
2223 | struct btrfs_disk_balance_args *ba) | |
2224 | { | |
2225 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2226 | } | |
2227 | ||
2228 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2229 | struct btrfs_balance_item *bi, | |
2230 | struct btrfs_disk_balance_args *ba) | |
2231 | { | |
2232 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2233 | } | |
2234 | ||
2235 | static inline void | |
2236 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2237 | struct btrfs_disk_balance_args *disk) | |
2238 | { | |
2239 | memset(cpu, 0, sizeof(*cpu)); | |
2240 | ||
2241 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2242 | cpu->usage = le64_to_cpu(disk->usage); | |
2243 | cpu->devid = le64_to_cpu(disk->devid); | |
2244 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2245 | cpu->pend = le64_to_cpu(disk->pend); | |
2246 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2247 | cpu->vend = le64_to_cpu(disk->vend); | |
2248 | cpu->target = le64_to_cpu(disk->target); | |
2249 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2250 | cpu->limit = le64_to_cpu(disk->limit); |
ed0df618 DS |
2251 | cpu->stripes_min = le32_to_cpu(disk->stripes_min); |
2252 | cpu->stripes_max = le32_to_cpu(disk->stripes_max); | |
0940ebf6 ID |
2253 | } |
2254 | ||
2255 | static inline void | |
2256 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2257 | struct btrfs_balance_args *cpu) | |
2258 | { | |
2259 | memset(disk, 0, sizeof(*disk)); | |
2260 | ||
2261 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2262 | disk->usage = cpu_to_le64(cpu->usage); | |
2263 | disk->devid = cpu_to_le64(cpu->devid); | |
2264 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2265 | disk->pend = cpu_to_le64(cpu->pend); | |
2266 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2267 | disk->vend = cpu_to_le64(cpu->vend); | |
2268 | disk->target = cpu_to_le64(cpu->target); | |
2269 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2270 | disk->limit = cpu_to_le64(cpu->limit); |
ed0df618 DS |
2271 | disk->stripes_min = cpu_to_le32(cpu->stripes_min); |
2272 | disk->stripes_max = cpu_to_le32(cpu->stripes_max); | |
0940ebf6 ID |
2273 | } |
2274 | ||
2275 | /* struct btrfs_super_block */ | |
db94535d | 2276 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2277 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2278 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2279 | generation, 64); | |
2280 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2281 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2282 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2283 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2284 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2285 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2286 | root_level, 8); | |
0b86a832 CM |
2287 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2288 | chunk_root, 64); | |
2289 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2290 | chunk_root_level, 8); |
2291 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2292 | log_root, 64); | |
c3027eb5 CM |
2293 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2294 | log_root_transid, 64); | |
e02119d5 CM |
2295 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2296 | log_root_level, 8); | |
db94535d CM |
2297 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2298 | total_bytes, 64); | |
2299 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2300 | bytes_used, 64); | |
5f39d397 CM |
2301 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2302 | sectorsize, 32); | |
2303 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2304 | nodesize, 32); | |
87ee04eb CM |
2305 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2306 | stripesize, 32); | |
5f39d397 CM |
2307 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2308 | root_dir_objectid, 64); | |
8a4b83cc CM |
2309 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2310 | num_devices, 64); | |
f2b636e8 JB |
2311 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2312 | compat_flags, 64); | |
2313 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2314 | compat_ro_flags, 64); |
f2b636e8 JB |
2315 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2316 | incompat_flags, 64); | |
607d432d JB |
2317 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2318 | csum_type, 16); | |
0af3d00b JB |
2319 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2320 | cache_generation, 64); | |
3cae210f | 2321 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2322 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2323 | uuid_tree_generation, 64); | |
607d432d JB |
2324 | |
2325 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2326 | { | |
1104a885 DS |
2327 | u16 t = btrfs_super_csum_type(s); |
2328 | /* | |
2329 | * csum type is validated at mount time | |
2330 | */ | |
607d432d JB |
2331 | return btrfs_csum_sizes[t]; |
2332 | } | |
2e635a27 | 2333 | |
2e635a27 | 2334 | |
851cd173 LB |
2335 | /* |
2336 | * The leaf data grows from end-to-front in the node. | |
2337 | * this returns the address of the start of the last item, | |
2338 | * which is the stop of the leaf data stack | |
2339 | */ | |
2ff7e61e | 2340 | static inline unsigned int leaf_data_end(struct btrfs_fs_info *fs_info, |
851cd173 LB |
2341 | struct extent_buffer *leaf) |
2342 | { | |
2343 | u32 nr = btrfs_header_nritems(leaf); | |
2344 | ||
2345 | if (nr == 0) | |
0b246afa | 2346 | return BTRFS_LEAF_DATA_SIZE(fs_info); |
851cd173 LB |
2347 | return btrfs_item_offset_nr(leaf, nr - 1); |
2348 | } | |
2349 | ||
5f39d397 CM |
2350 | /* struct btrfs_file_extent_item */ |
2351 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2352 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2353 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2354 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2355 | struct btrfs_file_extent_item, offset, 64); | |
2356 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2357 | struct btrfs_file_extent_item, generation, 64); | |
2358 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2359 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2360 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2361 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2362 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2363 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2364 | |
d397712b CM |
2365 | static inline unsigned long |
2366 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2367 | { |
7ec20afb | 2368 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2369 | } |
2370 | ||
2371 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2372 | { | |
7ec20afb | 2373 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2374 | } |
2375 | ||
db94535d CM |
2376 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2377 | disk_bytenr, 64); | |
5f39d397 CM |
2378 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2379 | generation, 64); | |
db94535d CM |
2380 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2381 | disk_num_bytes, 64); | |
5f39d397 CM |
2382 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2383 | offset, 64); | |
db94535d CM |
2384 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2385 | num_bytes, 64); | |
c8b97818 CM |
2386 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2387 | ram_bytes, 64); | |
2388 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2389 | compression, 8); | |
2390 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2391 | encryption, 8); | |
2392 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2393 | other_encoding, 16); | |
2394 | ||
c8b97818 CM |
2395 | /* |
2396 | * this returns the number of bytes used by the item on disk, minus the | |
2397 | * size of any extent headers. If a file is compressed on disk, this is | |
2398 | * the compressed size | |
2399 | */ | |
2400 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2401 | struct btrfs_item *e) | |
2402 | { | |
7ec20afb | 2403 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2404 | } |
9f5fae2f | 2405 | |
514ac8ad CM |
2406 | /* this returns the number of file bytes represented by the inline item. |
2407 | * If an item is compressed, this is the uncompressed size | |
2408 | */ | |
2409 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2410 | int slot, | |
2411 | struct btrfs_file_extent_item *fi) | |
2412 | { | |
2413 | struct btrfs_map_token token; | |
2414 | ||
2415 | btrfs_init_map_token(&token); | |
2416 | /* | |
2417 | * return the space used on disk if this item isn't | |
2418 | * compressed or encoded | |
2419 | */ | |
2420 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && | |
2421 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && | |
2422 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { | |
2423 | return btrfs_file_extent_inline_item_len(eb, | |
2424 | btrfs_item_nr(slot)); | |
2425 | } | |
2426 | ||
2427 | /* otherwise use the ram bytes field */ | |
2428 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); | |
2429 | } | |
2430 | ||
2431 | ||
733f4fbb SB |
2432 | /* btrfs_dev_stats_item */ |
2433 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
2434 | struct btrfs_dev_stats_item *ptr, | |
2435 | int index) | |
2436 | { | |
2437 | u64 val; | |
2438 | ||
2439 | read_extent_buffer(eb, &val, | |
2440 | offsetof(struct btrfs_dev_stats_item, values) + | |
2441 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2442 | sizeof(val)); | |
2443 | return val; | |
2444 | } | |
2445 | ||
2446 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2447 | struct btrfs_dev_stats_item *ptr, | |
2448 | int index, u64 val) | |
2449 | { | |
2450 | write_extent_buffer(eb, &val, | |
2451 | offsetof(struct btrfs_dev_stats_item, values) + | |
2452 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2453 | sizeof(val)); | |
2454 | } | |
2455 | ||
630dc772 AJ |
2456 | /* btrfs_qgroup_status_item */ |
2457 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2458 | generation, 64); | |
2459 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2460 | version, 64); | |
2461 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2462 | flags, 64); | |
2f232036 JS |
2463 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2464 | rescan, 64); | |
630dc772 AJ |
2465 | |
2466 | /* btrfs_qgroup_info_item */ | |
2467 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2468 | generation, 64); | |
2469 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2470 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2471 | rfer_cmpr, 64); | |
2472 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2473 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2474 | excl_cmpr, 64); | |
2475 | ||
2476 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2477 | struct btrfs_qgroup_info_item, generation, 64); | |
2478 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2479 | rfer, 64); | |
2480 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2481 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2482 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2483 | excl, 64); | |
2484 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2485 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2486 | ||
2487 | /* btrfs_qgroup_limit_item */ | |
2488 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2489 | flags, 64); | |
2490 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2491 | max_rfer, 64); | |
2492 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2493 | max_excl, 64); | |
2494 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2495 | rsv_rfer, 64); | |
2496 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2497 | rsv_excl, 64); | |
2498 | ||
a2bff640 SB |
2499 | /* btrfs_dev_replace_item */ |
2500 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2501 | struct btrfs_dev_replace_item, src_devid, 64); | |
2502 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2503 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2504 | 64); | |
2505 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2506 | replace_state, 64); | |
2507 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2508 | time_started, 64); | |
2509 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2510 | time_stopped, 64); | |
2511 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2512 | num_write_errors, 64); | |
2513 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2514 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2515 | 64); | |
2516 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2517 | cursor_left, 64); | |
2518 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2519 | cursor_right, 64); | |
2520 | ||
2521 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2522 | struct btrfs_dev_replace_item, src_devid, 64); | |
2523 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2524 | struct btrfs_dev_replace_item, | |
2525 | cont_reading_from_srcdev_mode, 64); | |
2526 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2527 | struct btrfs_dev_replace_item, replace_state, 64); | |
2528 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2529 | struct btrfs_dev_replace_item, time_started, 64); | |
2530 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2531 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2532 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2533 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2534 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2535 | struct btrfs_dev_replace_item, | |
2536 | num_uncorrectable_read_errors, 64); | |
2537 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2538 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2539 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2540 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2541 | ||
4beb1b8b CM |
2542 | /* helper function to cast into the data area of the leaf. */ |
2543 | #define btrfs_item_ptr(leaf, slot, type) \ | |
3d9ec8c4 | 2544 | ((type *)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 CM |
2545 | btrfs_item_offset_nr(leaf, slot))) |
2546 | ||
2547 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
3d9ec8c4 | 2548 | ((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \ |
5f39d397 | 2549 | btrfs_item_offset_nr(leaf, slot))) |
4beb1b8b | 2550 | |
67377734 JB |
2551 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2552 | { | |
2553 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2554 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2555 | } | |
2556 | ||
3b16a4e3 JB |
2557 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2558 | { | |
c62d2555 | 2559 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2560 | } |
2561 | ||
b18c6685 | 2562 | /* extent-tree.c */ |
28f75a0e | 2563 | |
2ff7e61e | 2564 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_fs_info *fs_info, u64 csum_bytes); |
28f75a0e | 2565 | |
27965b6c | 2566 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_fs_info *fs_info, |
9e0baf60 | 2567 | unsigned num_items) |
16cdcec7 | 2568 | { |
70e7af24 | 2569 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2570 | } |
2571 | ||
2572 | /* | |
2573 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2574 | * COW. | |
2575 | */ | |
27965b6c | 2576 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info, |
07127184 JB |
2577 | unsigned num_items) |
2578 | { | |
70e7af24 | 2579 | return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2580 | } |
2581 | ||
1be41b78 | 2582 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
2ff7e61e | 2583 | struct btrfs_fs_info *fs_info); |
0a2b2a84 | 2584 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
2ff7e61e | 2585 | struct btrfs_fs_info *fs_info); |
9cfa3e34 FM |
2586 | void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, |
2587 | const u64 start); | |
2588 | void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); | |
f78c436c FM |
2589 | bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
2590 | void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); | |
2591 | void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg); | |
fa9c0d79 | 2592 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 | 2593 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2ff7e61e JM |
2594 | struct btrfs_fs_info *fs_info, unsigned long count); |
2595 | int btrfs_async_run_delayed_refs(struct btrfs_fs_info *fs_info, | |
31b9655f | 2596 | unsigned long count, u64 transid, int wait); |
2ff7e61e | 2597 | int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len); |
a22285a6 | 2598 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2ff7e61e | 2599 | struct btrfs_fs_info *fs_info, u64 bytenr, |
3173a18f | 2600 | u64 offset, int metadata, u64 *refs, u64 *flags); |
2ff7e61e | 2601 | int btrfs_pin_extent(struct btrfs_fs_info *fs_info, |
11833d66 | 2602 | u64 bytenr, u64 num, int reserved); |
2ff7e61e | 2603 | int btrfs_pin_extent_for_log_replay(struct btrfs_fs_info *fs_info, |
e688b725 | 2604 | u64 bytenr, u64 num_bytes); |
2ff7e61e | 2605 | int btrfs_exclude_logged_extents(struct btrfs_fs_info *fs_info, |
8c2a1a30 | 2606 | struct extent_buffer *eb); |
e4c3b2dc | 2607 | int btrfs_cross_ref_exist(struct btrfs_root *root, |
5d4f98a2 | 2608 | u64 objectid, u64 offset, u64 bytenr); |
d397712b CM |
2609 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2610 | struct btrfs_fs_info *info, | |
2611 | u64 bytenr); | |
758f2dfc | 2612 | void btrfs_get_block_group(struct btrfs_block_group_cache *cache); |
5d4f98a2 | 2613 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
6ab0a202 | 2614 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
4d75f8a9 | 2615 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
310712b2 OS |
2616 | struct btrfs_root *root, |
2617 | u64 parent, u64 root_objectid, | |
2618 | const struct btrfs_disk_key *key, | |
2619 | int level, u64 hint, | |
2620 | u64 empty_size); | |
f0486c68 YZ |
2621 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2622 | struct btrfs_root *root, | |
2623 | struct extent_buffer *buf, | |
5581a51a | 2624 | u64 parent, int last_ref); |
5d4f98a2 | 2625 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
5d4f98a2 | 2626 | u64 root_objectid, u64 owner, |
5846a3c2 QW |
2627 | u64 offset, u64 ram_bytes, |
2628 | struct btrfs_key *ins); | |
5d4f98a2 | 2629 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
2ff7e61e | 2630 | struct btrfs_fs_info *fs_info, |
5d4f98a2 YZ |
2631 | u64 root_objectid, u64 owner, u64 offset, |
2632 | struct btrfs_key *ins); | |
18513091 | 2633 | int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, |
00361589 | 2634 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
e570fd27 | 2635 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2636 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2637 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2638 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2639 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2640 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2ff7e61e | 2641 | struct btrfs_fs_info *fs_info, |
5d4f98a2 | 2642 | u64 bytenr, u64 num_bytes, u64 flags, |
b1c79e09 | 2643 | int level, int is_data); |
31840ae1 | 2644 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2ff7e61e | 2645 | struct btrfs_fs_info *fs_info, |
66d7e7f0 | 2646 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
b06c4bf5 | 2647 | u64 owner, u64 offset); |
5d4f98a2 | 2648 | |
2ff7e61e JM |
2649 | int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info, |
2650 | u64 start, u64 len, int delalloc); | |
2651 | int btrfs_free_and_pin_reserved_extent(struct btrfs_fs_info *fs_info, | |
e688b725 | 2652 | u64 start, u64 len); |
8b74c03e | 2653 | void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info); |
ccd467d6 | 2654 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
2ff7e61e | 2655 | struct btrfs_fs_info *fs_info); |
b18c6685 | 2656 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
2ff7e61e | 2657 | struct btrfs_fs_info *fs_info, |
31840ae1 | 2658 | u64 bytenr, u64 num_bytes, u64 parent, |
b06c4bf5 | 2659 | u64 root_objectid, u64 owner, u64 offset); |
5d4f98a2 | 2660 | |
1bbc621e | 2661 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans, |
2ff7e61e | 2662 | struct btrfs_fs_info *fs_info); |
9078a3e1 | 2663 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2ff7e61e | 2664 | struct btrfs_fs_info *fs_info); |
dcdf7f6d | 2665 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
2ff7e61e JM |
2666 | struct btrfs_fs_info *fs_info); |
2667 | int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr); | |
9078a3e1 | 2668 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
5b4aacef | 2669 | int btrfs_read_block_groups(struct btrfs_fs_info *info); |
6bccf3ab | 2670 | int btrfs_can_relocate(struct btrfs_fs_info *fs_info, u64 bytenr); |
0b86a832 | 2671 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2ff7e61e | 2672 | struct btrfs_fs_info *fs_info, u64 bytes_used, |
e17cade2 | 2673 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2674 | u64 size); |
8eab77ff | 2675 | struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( |
7fd01182 FM |
2676 | struct btrfs_fs_info *fs_info, |
2677 | const u64 chunk_offset); | |
1a40e23b | 2678 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
6bccf3ab | 2679 | struct btrfs_fs_info *fs_info, u64 group_start, |
04216820 | 2680 | struct extent_map *em); |
47ab2a6c | 2681 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
e33e17ee JM |
2682 | void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); |
2683 | void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); | |
ea658bad | 2684 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
2ff7e61e | 2685 | struct btrfs_fs_info *fs_info); |
1b86826d JM |
2686 | u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info); |
2687 | u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info); | |
2688 | u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info); | |
4184ea7f | 2689 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
2690 | |
2691 | enum btrfs_reserve_flush_enum { | |
2692 | /* If we are in the transaction, we can't flush anything.*/ | |
2693 | BTRFS_RESERVE_NO_FLUSH, | |
2694 | /* | |
2695 | * Flushing delalloc may cause deadlock somewhere, in this | |
2696 | * case, use FLUSH LIMIT | |
2697 | */ | |
2698 | BTRFS_RESERVE_FLUSH_LIMIT, | |
2699 | BTRFS_RESERVE_FLUSH_ALL, | |
2700 | }; | |
2701 | ||
f376df2b JB |
2702 | enum btrfs_flush_state { |
2703 | FLUSH_DELAYED_ITEMS_NR = 1, | |
2704 | FLUSH_DELAYED_ITEMS = 2, | |
2705 | FLUSH_DELALLOC = 3, | |
2706 | FLUSH_DELALLOC_WAIT = 4, | |
2707 | ALLOC_CHUNK = 5, | |
2708 | COMMIT_TRANS = 6, | |
2709 | }; | |
2710 | ||
04f4f916 | 2711 | int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes); |
364ecf36 QW |
2712 | int btrfs_check_data_free_space(struct inode *inode, |
2713 | struct extent_changeset **reserved, u64 start, u64 len); | |
7cf5b976 | 2714 | void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len); |
51773bec QW |
2715 | void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, |
2716 | u64 len); | |
a22285a6 | 2717 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2ff7e61e | 2718 | struct btrfs_fs_info *fs_info); |
4fbcdf66 | 2719 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
d68fc57b | 2720 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
8ed7a2a0 | 2721 | struct btrfs_inode *inode); |
703b391a | 2722 | void btrfs_orphan_release_metadata(struct btrfs_inode *inode); |
d5c12070 MX |
2723 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2724 | struct btrfs_block_rsv *rsv, | |
2725 | int nitems, | |
ee3441b4 | 2726 | u64 *qgroup_reserved, bool use_global_rsv); |
2ff7e61e | 2727 | void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info, |
7775c818 | 2728 | struct btrfs_block_rsv *rsv); |
9f3db423 | 2729 | int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes); |
691fa059 | 2730 | void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes); |
364ecf36 QW |
2731 | int btrfs_delalloc_reserve_space(struct inode *inode, |
2732 | struct extent_changeset **reserved, u64 start, u64 len); | |
7cf5b976 | 2733 | void btrfs_delalloc_release_space(struct inode *inode, u64 start, u64 len); |
66d8f3dd | 2734 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
2ff7e61e | 2735 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info, |
66d8f3dd | 2736 | unsigned short type); |
2ff7e61e | 2737 | void btrfs_free_block_rsv(struct btrfs_fs_info *fs_info, |
f0486c68 | 2738 | struct btrfs_block_rsv *rsv); |
cdfb080e | 2739 | void __btrfs_free_block_rsv(struct btrfs_block_rsv *rsv); |
4a92b1b8 | 2740 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
2741 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
2742 | enum btrfs_reserve_flush_enum flush); | |
2ff7e61e | 2743 | int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_factor); |
36ba022a | 2744 | int btrfs_block_rsv_refill(struct btrfs_root *root, |
08e007d2 MX |
2745 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
2746 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 | 2747 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
25d609f8 JB |
2748 | struct btrfs_block_rsv *dst_rsv, u64 num_bytes, |
2749 | int update_size); | |
d52be818 JB |
2750 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
2751 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
2752 | int min_factor); | |
2ff7e61e | 2753 | void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info, |
f0486c68 YZ |
2754 | struct btrfs_block_rsv *block_rsv, |
2755 | u64 num_bytes); | |
5e00f193 | 2756 | int btrfs_inc_block_group_ro(struct btrfs_fs_info *fs_info, |
f0486c68 | 2757 | struct btrfs_block_group_cache *cache); |
2ff7e61e | 2758 | void btrfs_dec_block_group_ro(struct btrfs_block_group_cache *cache); |
0af3d00b | 2759 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2760 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
2ff7e61e | 2761 | int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, |
acce952b | 2762 | u64 start, u64 end); |
2ff7e61e | 2763 | int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, |
1edb647b | 2764 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca | 2765 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2ff7e61e JM |
2766 | struct btrfs_fs_info *fs_info, u64 type); |
2767 | int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range); | |
acce952b | 2768 | |
c59021f8 | 2769 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2770 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2771 | struct btrfs_fs_info *fs_info); | |
31e50229 | 2772 | int __get_raid_index(u64 flags); |
9ea24bbe FM |
2773 | int btrfs_start_write_no_snapshoting(struct btrfs_root *root); |
2774 | void btrfs_end_write_no_snapshoting(struct btrfs_root *root); | |
0bc19f90 | 2775 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
39c2d7fa | 2776 | void check_system_chunk(struct btrfs_trans_handle *trans, |
2ff7e61e | 2777 | struct btrfs_fs_info *fs_info, const u64 type); |
a5ed9182 OS |
2778 | u64 add_new_free_space(struct btrfs_block_group_cache *block_group, |
2779 | struct btrfs_fs_info *info, u64 start, u64 end); | |
2780 | ||
dee26a9f | 2781 | /* ctree.c */ |
310712b2 | 2782 | int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key, |
5d4f98a2 | 2783 | int level, int *slot); |
310712b2 | 2784 | int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2); |
0b86a832 CM |
2785 | int btrfs_previous_item(struct btrfs_root *root, |
2786 | struct btrfs_path *path, u64 min_objectid, | |
2787 | int type); | |
ade2e0b3 WS |
2788 | int btrfs_previous_extent_item(struct btrfs_root *root, |
2789 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
2790 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
2791 | struct btrfs_path *path, | |
310712b2 | 2792 | const struct btrfs_key *new_key); |
925baedd CM |
2793 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2794 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2795 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 2796 | struct btrfs_key *key, int lowest_level, |
de78b51a | 2797 | u64 min_trans); |
3f157a2f | 2798 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 2799 | struct btrfs_path *path, |
3f157a2f | 2800 | u64 min_trans); |
7069830a AB |
2801 | enum btrfs_compare_tree_result { |
2802 | BTRFS_COMPARE_TREE_NEW, | |
2803 | BTRFS_COMPARE_TREE_DELETED, | |
2804 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 2805 | BTRFS_COMPARE_TREE_SAME, |
7069830a AB |
2806 | }; |
2807 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, | |
2808 | struct btrfs_root *right_root, | |
2809 | struct btrfs_path *left_path, | |
2810 | struct btrfs_path *right_path, | |
2811 | struct btrfs_key *key, | |
2812 | enum btrfs_compare_tree_result result, | |
2813 | void *ctx); | |
2814 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
2815 | struct btrfs_root *right_root, | |
2816 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
2817 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2818 | struct btrfs_root *root, struct extent_buffer *buf, | |
2819 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2820 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2821 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2822 | struct btrfs_root *root, | |
2823 | struct extent_buffer *buf, | |
2824 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2825 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2826 | struct extent_buffer *buf); | |
2ff7e61e | 2827 | void btrfs_extend_item(struct btrfs_fs_info *fs_info, struct btrfs_path *path, |
143bede5 | 2828 | u32 data_size); |
2ff7e61e JM |
2829 | void btrfs_truncate_item(struct btrfs_fs_info *fs_info, |
2830 | struct btrfs_path *path, u32 new_size, int from_end); | |
459931ec CM |
2831 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2832 | struct btrfs_root *root, | |
2833 | struct btrfs_path *path, | |
310712b2 | 2834 | const struct btrfs_key *new_key, |
459931ec | 2835 | unsigned long split_offset); |
ad48fd75 YZ |
2836 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2837 | struct btrfs_root *root, | |
2838 | struct btrfs_path *path, | |
310712b2 | 2839 | const struct btrfs_key *new_key); |
e33d5c3d KN |
2840 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
2841 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
310712b2 OS |
2842 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2843 | const struct btrfs_key *key, struct btrfs_path *p, | |
2844 | int ins_len, int cow); | |
2845 | int btrfs_search_old_slot(struct btrfs_root *root, const struct btrfs_key *key, | |
5d9e75c4 | 2846 | struct btrfs_path *p, u64 time_seq); |
2f38b3e1 | 2847 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
310712b2 OS |
2848 | const struct btrfs_key *key, |
2849 | struct btrfs_path *p, int find_higher, | |
2850 | int return_any); | |
6702ed49 | 2851 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2852 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 2853 | int start_slot, u64 *last_ret, |
a6b6e75e | 2854 | struct btrfs_key *progress); |
b3b4aa74 | 2855 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2856 | struct btrfs_path *btrfs_alloc_path(void); |
2857 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2858 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 2859 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 2860 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
2861 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2862 | ||
85e21bac CM |
2863 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2864 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2865 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2866 | struct btrfs_root *root, | |
2867 | struct btrfs_path *path) | |
2868 | { | |
2869 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2870 | } | |
2871 | ||
afe5fea7 | 2872 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
310712b2 | 2873 | const struct btrfs_key *cpu_key, u32 *data_size, |
143bede5 | 2874 | u32 total_data, u32 total_size, int nr); |
310712b2 OS |
2875 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2876 | const struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2877 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2878 | struct btrfs_root *root, | |
2879 | struct btrfs_path *path, | |
310712b2 OS |
2880 | const struct btrfs_key *cpu_key, u32 *data_size, |
2881 | int nr); | |
9c58309d CM |
2882 | |
2883 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2884 | struct btrfs_root *root, | |
2885 | struct btrfs_path *path, | |
310712b2 | 2886 | const struct btrfs_key *key, |
9c58309d CM |
2887 | u32 data_size) |
2888 | { | |
2889 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2890 | } | |
2891 | ||
234b63a0 | 2892 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 2893 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2894 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2895 | u64 time_seq); | |
1c8f52a5 AB |
2896 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2897 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2898 | { |
2899 | ++p->slots[0]; | |
2900 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2901 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2902 | return 0; |
2903 | } | |
1c8f52a5 AB |
2904 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2905 | { | |
2906 | return btrfs_next_old_item(root, p, 0); | |
2907 | } | |
2ff7e61e JM |
2908 | int btrfs_leaf_free_space(struct btrfs_fs_info *fs_info, |
2909 | struct extent_buffer *leaf); | |
2c536799 JM |
2910 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
2911 | struct btrfs_block_rsv *block_rsv, | |
2912 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
2913 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2914 | struct btrfs_root *root, | |
2915 | struct extent_buffer *node, | |
2916 | struct extent_buffer *parent); | |
7841cb28 DS |
2917 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2918 | { | |
2919 | /* | |
afcdd129 | 2920 | * Do it this way so we only ever do one test_bit in the normal case. |
7841cb28 | 2921 | */ |
afcdd129 JB |
2922 | if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) { |
2923 | if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags)) | |
2924 | return 2; | |
2925 | return 1; | |
2926 | } | |
2927 | return 0; | |
7841cb28 | 2928 | } |
babbf170 MX |
2929 | |
2930 | /* | |
2931 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
2932 | * anything except sleeping. This function is used to check the status of | |
2933 | * the fs. | |
2934 | */ | |
2ff7e61e | 2935 | static inline int btrfs_need_cleaner_sleep(struct btrfs_fs_info *fs_info) |
babbf170 | 2936 | { |
2ff7e61e | 2937 | return fs_info->sb->s_flags & MS_RDONLY || btrfs_fs_closing(fs_info); |
babbf170 MX |
2938 | } |
2939 | ||
6c41761f DS |
2940 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
2941 | { | |
837d5b6e | 2942 | kfree(fs_info->balance_ctl); |
6c41761f DS |
2943 | kfree(fs_info->delayed_root); |
2944 | kfree(fs_info->extent_root); | |
2945 | kfree(fs_info->tree_root); | |
2946 | kfree(fs_info->chunk_root); | |
2947 | kfree(fs_info->dev_root); | |
2948 | kfree(fs_info->csum_root); | |
bcef60f2 | 2949 | kfree(fs_info->quota_root); |
d8f98039 | 2950 | kfree(fs_info->uuid_root); |
70f6d82e | 2951 | kfree(fs_info->free_space_root); |
6c41761f DS |
2952 | kfree(fs_info->super_copy); |
2953 | kfree(fs_info->super_for_commit); | |
f667aef6 | 2954 | security_free_mnt_opts(&fs_info->security_opts); |
6c41761f DS |
2955 | kfree(fs_info); |
2956 | } | |
7841cb28 | 2957 | |
097b8a7c JS |
2958 | /* tree mod log functions from ctree.c */ |
2959 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2960 | struct seq_list *elem); | |
2961 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2962 | struct seq_list *elem); | |
5b6602e7 | 2963 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 2964 | |
dee26a9f | 2965 | /* root-item.c */ |
0660b5af | 2966 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
6bccf3ab | 2967 | struct btrfs_fs_info *fs_info, |
4df27c4d YZ |
2968 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2969 | const char *name, int name_len); | |
2970 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
6bccf3ab | 2971 | struct btrfs_fs_info *fs_info, |
4df27c4d | 2972 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, |
0660b5af | 2973 | const char *name, int name_len); |
e089f05c | 2974 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
310712b2 OS |
2975 | const struct btrfs_key *key); |
2976 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, | |
2977 | const struct btrfs_key *key, | |
2978 | struct btrfs_root_item *item); | |
b45a9d8b JM |
2979 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
2980 | struct btrfs_root *root, | |
2981 | struct btrfs_key *key, | |
2982 | struct btrfs_root_item *item); | |
310712b2 | 2983 | int btrfs_find_root(struct btrfs_root *root, const struct btrfs_key *search_key, |
cb517eab MX |
2984 | struct btrfs_path *path, struct btrfs_root_item *root_item, |
2985 | struct btrfs_key *root_key); | |
6bccf3ab | 2986 | int btrfs_find_orphan_roots(struct btrfs_fs_info *fs_info); |
bf5f32ec MF |
2987 | void btrfs_set_root_node(struct btrfs_root_item *item, |
2988 | struct extent_buffer *node); | |
08fe4db1 | 2989 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
2990 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
2991 | struct btrfs_root *root); | |
08fe4db1 | 2992 | |
07b30a49 SB |
2993 | /* uuid-tree.c */ |
2994 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, | |
6bccf3ab | 2995 | struct btrfs_fs_info *fs_info, u8 *uuid, u8 type, |
07b30a49 SB |
2996 | u64 subid); |
2997 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, | |
6bccf3ab | 2998 | struct btrfs_fs_info *fs_info, u8 *uuid, u8 type, |
07b30a49 | 2999 | u64 subid); |
70f80175 SB |
3000 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
3001 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
3002 | u64)); | |
07b30a49 | 3003 | |
dee26a9f | 3004 | /* dir-item.c */ |
9c52057c CM |
3005 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
3006 | const char *name, int name_len); | |
d397712b CM |
3007 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
3008 | struct btrfs_root *root, const char *name, | |
8e7611cf | 3009 | int name_len, struct btrfs_inode *dir, |
aec7477b | 3010 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3011 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3012 | struct btrfs_root *root, | |
3013 | struct btrfs_path *path, u64 dir, | |
3014 | const char *name, int name_len, | |
3015 | int mod); | |
3016 | struct btrfs_dir_item * | |
3017 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3018 | struct btrfs_root *root, | |
3019 | struct btrfs_path *path, u64 dir, | |
3020 | u64 objectid, const char *name, int name_len, | |
3021 | int mod); | |
4df27c4d YZ |
3022 | struct btrfs_dir_item * |
3023 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3024 | struct btrfs_path *path, u64 dirid, | |
3025 | const char *name, int name_len); | |
7e38180e CM |
3026 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3027 | struct btrfs_root *root, | |
3028 | struct btrfs_path *path, | |
3029 | struct btrfs_dir_item *di); | |
5103e947 | 3030 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3031 | struct btrfs_root *root, |
3032 | struct btrfs_path *path, u64 objectid, | |
3033 | const char *name, u16 name_len, | |
3034 | const void *data, u16 data_len); | |
5103e947 JB |
3035 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3036 | struct btrfs_root *root, | |
3037 | struct btrfs_path *path, u64 dir, | |
3038 | const char *name, u16 name_len, | |
3039 | int mod); | |
2ff7e61e | 3040 | int verify_dir_item(struct btrfs_fs_info *fs_info, |
e79a3327 | 3041 | struct extent_buffer *leaf, int slot, |
22a94d44 | 3042 | struct btrfs_dir_item *dir_item); |
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); | |
19c6dcbf SY |
3047 | bool btrfs_is_name_len_valid(struct extent_buffer *leaf, int slot, |
3048 | unsigned long start, u16 name_len); | |
7b128766 JB |
3049 | |
3050 | /* orphan.c */ | |
3051 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3052 | struct btrfs_root *root, u64 offset); | |
3053 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3054 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3055 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3056 | |
dee26a9f | 3057 | /* inode-item.c */ |
3954401f CM |
3058 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3059 | struct btrfs_root *root, | |
3060 | const char *name, int name_len, | |
aec7477b | 3061 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3062 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3063 | struct btrfs_root *root, | |
3064 | const char *name, int name_len, | |
aec7477b | 3065 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
3066 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3067 | struct btrfs_root *root, | |
3068 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3069 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3070 | *root, struct btrfs_path *path, |
3071 | struct btrfs_key *location, int mod); | |
dee26a9f | 3072 | |
f186373f MF |
3073 | struct btrfs_inode_extref * |
3074 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3075 | struct btrfs_root *root, | |
3076 | struct btrfs_path *path, | |
3077 | const char *name, int name_len, | |
3078 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3079 | int cow); | |
3080 | ||
3081 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, | |
3082 | u64 ref_objectid, const char *name, | |
3083 | int name_len, | |
3084 | struct btrfs_inode_extref **extref_ret); | |
3085 | ||
dee26a9f | 3086 | /* file-item.c */ |
facc8a22 | 3087 | struct btrfs_dio_private; |
459931ec | 3088 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
5b4aacef | 3089 | struct btrfs_fs_info *fs_info, u64 bytenr, u64 len); |
2ff7e61e JM |
3090 | int btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u32 *dst); |
3091 | int btrfs_lookup_bio_sums_dio(struct inode *inode, struct bio *bio, | |
3092 | u64 logical_offset); | |
b18c6685 | 3093 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3094 | struct btrfs_root *root, |
3095 | u64 objectid, u64 pos, | |
3096 | u64 disk_offset, u64 disk_num_bytes, | |
3097 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3098 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3099 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3100 | struct btrfs_root *root, | |
3101 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3102 | u64 bytenr, int mod); |
065631f6 | 3103 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3104 | struct btrfs_root *root, |
e6dcd2dc | 3105 | struct btrfs_ordered_sum *sums); |
2ff7e61e JM |
3106 | int btrfs_csum_one_bio(struct inode *inode, struct bio *bio, |
3107 | u64 file_start, int contig); | |
a2de733c AJ |
3108 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3109 | struct list_head *list, int search_commit); | |
9cdc5124 | 3110 | void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode, |
7ffbb598 FM |
3111 | const struct btrfs_path *path, |
3112 | struct btrfs_file_extent_item *fi, | |
3113 | const bool new_inline, | |
3114 | struct extent_map *em); | |
3115 | ||
39279cc3 | 3116 | /* inode.c */ |
8ccf6f19 MX |
3117 | struct btrfs_delalloc_work { |
3118 | struct inode *inode; | |
8ccf6f19 MX |
3119 | int delay_iput; |
3120 | struct completion completion; | |
3121 | struct list_head list; | |
3122 | struct btrfs_work work; | |
3123 | }; | |
3124 | ||
3125 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, | |
651d494a | 3126 | int delay_iput); |
8ccf6f19 MX |
3127 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); |
3128 | ||
fc4f21b1 NB |
3129 | struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, |
3130 | struct page *page, size_t pg_offset, u64 start, | |
3131 | u64 len, int create); | |
00361589 | 3132 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3133 | u64 *orig_start, u64 *orig_block_len, |
3134 | u64 *ram_bytes); | |
4881ee5a CM |
3135 | |
3136 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3137 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3138 | #define ClearPageChecked ClearPageFsMisc |
3139 | #define SetPageChecked SetPageFsMisc | |
3140 | #define PageChecked PageFsMisc | |
3141 | #endif | |
3142 | ||
b6973aa6 LZ |
3143 | /* This forces readahead on a given range of bytes in an inode */ |
3144 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3145 | struct file_ra_state *ra, struct file *file, | |
3146 | pgoff_t offset, unsigned long req_size) | |
3147 | { | |
3148 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3149 | } | |
3150 | ||
3de4586c | 3151 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
70ddc553 | 3152 | int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index); |
e02119d5 CM |
3153 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3154 | struct btrfs_root *root, | |
4ec5934e | 3155 | struct btrfs_inode *dir, struct btrfs_inode *inode, |
e02119d5 CM |
3156 | const char *name, int name_len); |
3157 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
db0a669f | 3158 | struct btrfs_inode *parent_inode, struct btrfs_inode *inode, |
e02119d5 | 3159 | const char *name, int name_len, int add_backref, u64 index); |
4df27c4d YZ |
3160 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3161 | struct btrfs_root *root, | |
3162 | struct inode *dir, u64 objectid, | |
3163 | const char *name, int name_len); | |
9703fefe | 3164 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
2aaa6655 | 3165 | int front); |
e02119d5 CM |
3166 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3167 | struct btrfs_root *root, | |
3168 | struct inode *inode, u64 new_size, | |
3169 | u32 min_type); | |
3170 | ||
24bbcf04 | 3171 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
6c255e67 MX |
3172 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
3173 | int nr); | |
2ac55d41 | 3174 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
ba8b04c1 | 3175 | struct extent_state **cached_state, int dedupe); |
d2fb3437 | 3176 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3177 | struct btrfs_root *new_root, |
3178 | struct btrfs_root *parent_root, | |
3179 | u64 new_dirid); | |
81a75f67 | 3180 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
64a16701 DW |
3181 | size_t size, struct bio *bio, |
3182 | unsigned long bio_flags); | |
c6100a4b | 3183 | void btrfs_set_range_writeback(void *private_data, u64 start, u64 end); |
11bac800 | 3184 | int btrfs_page_mkwrite(struct vm_fault *vmf); |
9ebefb18 | 3185 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3186 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3187 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3188 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3189 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3190 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3191 | int btrfs_init_cachep(void); |
3192 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3193 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3194 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3195 | struct btrfs_root *root, int *was_new); |
fc4f21b1 NB |
3196 | struct extent_map *btrfs_get_extent(struct btrfs_inode *inode, |
3197 | struct page *page, size_t pg_offset, | |
3198 | u64 start, u64 end, int create); | |
a52d9a80 CM |
3199 | int btrfs_update_inode(struct btrfs_trans_handle *trans, |
3200 | struct btrfs_root *root, | |
3201 | struct inode *inode); | |
be6aef60 JB |
3202 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3203 | struct btrfs_root *root, struct inode *inode); | |
73f2e545 NB |
3204 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, |
3205 | struct btrfs_inode *inode); | |
66b4ffd1 | 3206 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3207 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3208 | struct btrfs_root *root); | |
a41ad394 | 3209 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3210 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 | 3211 | void btrfs_add_delayed_iput(struct inode *inode); |
2ff7e61e | 3212 | void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info); |
efa56464 YZ |
3213 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3214 | u64 start, u64 num_bytes, u64 min_size, | |
3215 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3216 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3217 | struct btrfs_trans_handle *trans, int mode, | |
3218 | u64 start, u64 num_bytes, u64 min_size, | |
3219 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 3220 | extern const struct dentry_operations btrfs_dentry_operations; |
6a3891c5 JB |
3221 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
3222 | void btrfs_test_inode_set_ops(struct inode *inode); | |
3223 | #endif | |
f46b5a66 CH |
3224 | |
3225 | /* ioctl.c */ | |
3226 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3227 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
d5131b65 | 3228 | int btrfs_ioctl_get_supported_features(void __user *arg); |
6cbff00f CH |
3229 | void btrfs_update_iflags(struct inode *inode); |
3230 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
dd5f9615 | 3231 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3232 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3233 | struct btrfs_ioctl_defrag_range_args *range, | |
3234 | u64 newer_than, unsigned long max_pages); | |
5af3e8cc SB |
3235 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3236 | struct btrfs_ioctl_space_info *space); | |
35a3621b SB |
3237 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
3238 | struct btrfs_ioctl_balance_args *bargs); | |
2b3909f8 DW |
3239 | ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen, |
3240 | struct file *dst_file, u64 dst_loff); | |
35a3621b | 3241 | |
39279cc3 | 3242 | /* file.c */ |
9247f317 MX |
3243 | int btrfs_auto_defrag_init(void); |
3244 | void btrfs_auto_defrag_exit(void); | |
4cb5300b | 3245 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
6158e1ce | 3246 | struct btrfs_inode *inode); |
4cb5300b | 3247 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); |
26176e7c | 3248 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3249 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
dcdbc059 | 3250 | void btrfs_drop_extent_cache(struct btrfs_inode *inode, u64 start, u64 end, |
7014cdb4 | 3251 | int skip_pinned); |
828c0950 | 3252 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3253 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3254 | struct btrfs_root *root, struct inode *inode, | |
3255 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3256 | u64 *drop_end, int drop_cache, |
3257 | int replace_extent, | |
3258 | u32 extent_item_size, | |
3259 | int *key_inserted); | |
5dc562c5 JB |
3260 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3261 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3262 | u64 end, int drop_cache); |
d899e052 | 3263 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
7a6d7067 | 3264 | struct btrfs_inode *inode, u64 start, u64 end); |
6bf13c0c | 3265 | int btrfs_release_file(struct inode *inode, struct file *file); |
2ff7e61e JM |
3266 | int btrfs_dirty_pages(struct inode *inode, struct page **pages, |
3267 | size_t num_pages, loff_t pos, size_t write_bytes, | |
be1a12a0 | 3268 | struct extent_state **cached); |
728404da | 3269 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
04b38d60 CH |
3270 | int btrfs_clone_file_range(struct file *file_in, loff_t pos_in, |
3271 | struct file *file_out, loff_t pos_out, u64 len); | |
6bf13c0c | 3272 | |
6702ed49 CM |
3273 | /* tree-defrag.c */ |
3274 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3275 | struct btrfs_root *root); |
58176a96 JB |
3276 | |
3277 | /* sysfs.c */ | |
3278 | int btrfs_init_sysfs(void); | |
3279 | void btrfs_exit_sysfs(void); | |
96f3136e | 3280 | int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info); |
6618a59b | 3281 | void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info); |
58176a96 | 3282 | |
5103e947 JB |
3283 | /* xattr.c */ |
3284 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3285 | |
edbd8d4e | 3286 | /* super.c */ |
2ff7e61e | 3287 | int btrfs_parse_options(struct btrfs_fs_info *info, char *options, |
96da0919 | 3288 | unsigned long new_flags); |
6bf13c0c | 3289 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 | 3290 | |
2fd57fcb AB |
3291 | static inline __printf(2, 3) |
3292 | void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) | |
3293 | { | |
3294 | } | |
3295 | ||
533574c6 JP |
3296 | #ifdef CONFIG_PRINTK |
3297 | __printf(2, 3) | |
c2cf52eb | 3298 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 | 3299 | #else |
2fd57fcb AB |
3300 | #define btrfs_printk(fs_info, fmt, args...) \ |
3301 | btrfs_no_printk(fs_info, fmt, ##args) | |
533574c6 JP |
3302 | #endif |
3303 | ||
c2cf52eb SK |
3304 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3305 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3306 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3307 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3308 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3309 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3310 | #define btrfs_err(fs_info, fmt, args...) \ | |
3311 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3312 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3313 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3314 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3315 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3316 | #define btrfs_info(fs_info, fmt, args...) \ | |
3317 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3318 | |
08a84e25 DS |
3319 | /* |
3320 | * Wrappers that use printk_in_rcu | |
3321 | */ | |
3322 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3323 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3324 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3325 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3326 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3327 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3328 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3329 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3330 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3331 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3332 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3333 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3334 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3335 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3336 | ||
24aa6b41 DS |
3337 | /* |
3338 | * Wrappers that use a ratelimited printk_in_rcu | |
3339 | */ | |
3340 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3341 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3342 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3343 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3344 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3345 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3346 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3347 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3348 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3349 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3350 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3351 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3352 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3353 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3354 | ||
1dd6d7ca DS |
3355 | /* |
3356 | * Wrappers that use a ratelimited printk | |
3357 | */ | |
3358 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3359 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3360 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3361 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3362 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3363 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3364 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3365 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3366 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3367 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3368 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3369 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3370 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3371 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
897a41b1 JM |
3372 | |
3373 | #if defined(CONFIG_DYNAMIC_DEBUG) | |
3374 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3375 | do { \ | |
3376 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3377 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3378 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args); \ | |
3379 | } while (0) | |
3380 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ | |
3381 | do { \ | |
3382 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3383 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3384 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args); \ | |
3385 | } while (0) | |
3386 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ | |
3387 | do { \ | |
3388 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3389 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3390 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, \ | |
3391 | ##args);\ | |
3392 | } while (0) | |
3393 | #define btrfs_debug_rl(fs_info, fmt, args...) \ | |
3394 | do { \ | |
3395 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3396 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3397 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, \ | |
3398 | ##args); \ | |
3399 | } while (0) | |
3400 | #elif defined(DEBUG) | |
c2cf52eb SK |
3401 | #define btrfs_debug(fs_info, fmt, args...) \ |
3402 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3403 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3404 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3405 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3406 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3407 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3408 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3409 | #else |
3410 | #define btrfs_debug(fs_info, fmt, args...) \ | |
c01f5f96 | 3411 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
08a84e25 | 3412 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
c01f5f96 | 3413 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
24aa6b41 | 3414 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
c01f5f96 | 3415 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
1dd6d7ca | 3416 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
c01f5f96 | 3417 | btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) |
27a0dd61 | 3418 | #endif |
c2cf52eb | 3419 | |
08a84e25 DS |
3420 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3421 | do { \ | |
3422 | rcu_read_lock(); \ | |
3423 | btrfs_printk(fs_info, fmt, ##args); \ | |
3424 | rcu_read_unlock(); \ | |
3425 | } while (0) | |
3426 | ||
24aa6b41 DS |
3427 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3428 | do { \ | |
3429 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3430 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3431 | DEFAULT_RATELIMIT_BURST); \ | |
3432 | if (__ratelimit(&_rs)) \ | |
3433 | btrfs_printk(fs_info, fmt, ##args); \ | |
3434 | } while (0) | |
3435 | ||
3436 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3437 | do { \ | |
3438 | rcu_read_lock(); \ | |
3439 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3440 | rcu_read_unlock(); \ | |
3441 | } while (0) | |
3442 | ||
2e17c7c6 JB |
3443 | #ifdef CONFIG_BTRFS_ASSERT |
3444 | ||
c0d19e2b | 3445 | __cold |
2e17c7c6 JB |
3446 | static inline void assfail(char *expr, char *file, int line) |
3447 | { | |
ab8d0fc4 | 3448 | pr_err("assertion failed: %s, file: %s, line: %d\n", |
2e17c7c6 JB |
3449 | expr, file, line); |
3450 | BUG(); | |
3451 | } | |
3452 | ||
3453 | #define ASSERT(expr) \ | |
3454 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3455 | #else | |
3456 | #define ASSERT(expr) ((void)0) | |
3457 | #endif | |
3458 | ||
533574c6 | 3459 | __printf(5, 6) |
c0d19e2b | 3460 | __cold |
34d97007 | 3461 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3462 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3463 | |
e33e17ee | 3464 | const char *btrfs_decode_error(int errno); |
533574c6 | 3465 | |
c0d19e2b | 3466 | __cold |
49b25e05 | 3467 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
66642832 | 3468 | const char *function, |
49b25e05 JM |
3469 | unsigned int line, int errno); |
3470 | ||
c5f4ccb2 AJ |
3471 | /* |
3472 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3473 | * detected, that way the exact line number is reported. | |
3474 | */ | |
66642832 | 3475 | #define btrfs_abort_transaction(trans, errno) \ |
c5f4ccb2 AJ |
3476 | do { \ |
3477 | /* Report first abort since mount */ \ | |
3478 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
66642832 | 3479 | &((trans)->fs_info->fs_state))) { \ |
e5d6b12f CM |
3480 | if ((errno) != -EIO) { \ |
3481 | WARN(1, KERN_DEBUG \ | |
3482 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3483 | (errno)); \ | |
3484 | } else { \ | |
71367b3f JM |
3485 | btrfs_debug((trans)->fs_info, \ |
3486 | "Transaction aborted (error %d)", \ | |
e5d6b12f CM |
3487 | (errno)); \ |
3488 | } \ | |
c5f4ccb2 | 3489 | } \ |
66642832 | 3490 | __btrfs_abort_transaction((trans), __func__, \ |
c5f4ccb2 AJ |
3491 | __LINE__, (errno)); \ |
3492 | } while (0) | |
3493 | ||
3494 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3495 | do { \ | |
3496 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3497 | (errno), fmt, ##args); \ | |
3498 | } while (0) | |
3499 | ||
3500 | __printf(5, 6) | |
3501 | __cold | |
3502 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3503 | unsigned int line, int errno, const char *fmt, ...); | |
3504 | /* | |
3505 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3506 | * will panic(). Otherwise we BUG() here. | |
3507 | */ | |
3508 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3509 | do { \ | |
3510 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3511 | BUG(); \ | |
3512 | } while (0) | |
3513 | ||
3514 | ||
3515 | /* compatibility and incompatibility defines */ | |
3516 | ||
2b0ce2c2 MH |
3517 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3518 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3519 | ||
3520 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3521 | u64 flag) | |
3522 | { | |
3523 | struct btrfs_super_block *disk_super; | |
3524 | u64 features; | |
3525 | ||
3526 | disk_super = fs_info->super_copy; | |
3527 | features = btrfs_super_incompat_flags(disk_super); | |
3528 | if (!(features & flag)) { | |
ceda0864 MX |
3529 | spin_lock(&fs_info->super_lock); |
3530 | features = btrfs_super_incompat_flags(disk_super); | |
3531 | if (!(features & flag)) { | |
3532 | features |= flag; | |
3533 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3534 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3535 | flag); |
3536 | } | |
3537 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3538 | } |
3539 | } | |
3540 | ||
1abfbcdf OS |
3541 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
3542 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3543 | ||
3544 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
3545 | u64 flag) | |
3546 | { | |
3547 | struct btrfs_super_block *disk_super; | |
3548 | u64 features; | |
3549 | ||
3550 | disk_super = fs_info->super_copy; | |
3551 | features = btrfs_super_incompat_flags(disk_super); | |
3552 | if (features & flag) { | |
3553 | spin_lock(&fs_info->super_lock); | |
3554 | features = btrfs_super_incompat_flags(disk_super); | |
3555 | if (features & flag) { | |
3556 | features &= ~flag; | |
3557 | btrfs_set_super_incompat_flags(disk_super, features); | |
3558 | btrfs_info(fs_info, "clearing %llu feature flag", | |
3559 | flag); | |
3560 | } | |
3561 | spin_unlock(&fs_info->super_lock); | |
3562 | } | |
3563 | } | |
3564 | ||
3173a18f JB |
3565 | #define btrfs_fs_incompat(fs_info, opt) \ |
3566 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3567 | ||
9780c497 | 3568 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3569 | { |
3570 | struct btrfs_super_block *disk_super; | |
3571 | disk_super = fs_info->super_copy; | |
3572 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3573 | } | |
3574 | ||
1abfbcdf OS |
3575 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
3576 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3577 | ||
3578 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3579 | u64 flag) | |
3580 | { | |
3581 | struct btrfs_super_block *disk_super; | |
3582 | u64 features; | |
3583 | ||
3584 | disk_super = fs_info->super_copy; | |
3585 | features = btrfs_super_compat_ro_flags(disk_super); | |
3586 | if (!(features & flag)) { | |
3587 | spin_lock(&fs_info->super_lock); | |
3588 | features = btrfs_super_compat_ro_flags(disk_super); | |
3589 | if (!(features & flag)) { | |
3590 | features |= flag; | |
3591 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3592 | btrfs_info(fs_info, "setting %llu ro feature flag", | |
3593 | flag); | |
3594 | } | |
3595 | spin_unlock(&fs_info->super_lock); | |
3596 | } | |
3597 | } | |
3598 | ||
3599 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
3600 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3601 | ||
3602 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3603 | u64 flag) | |
3604 | { | |
3605 | struct btrfs_super_block *disk_super; | |
3606 | u64 features; | |
3607 | ||
3608 | disk_super = fs_info->super_copy; | |
3609 | features = btrfs_super_compat_ro_flags(disk_super); | |
3610 | if (features & flag) { | |
3611 | spin_lock(&fs_info->super_lock); | |
3612 | features = btrfs_super_compat_ro_flags(disk_super); | |
3613 | if (features & flag) { | |
3614 | features &= ~flag; | |
3615 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3616 | btrfs_info(fs_info, "clearing %llu ro feature flag", | |
3617 | flag); | |
3618 | } | |
3619 | spin_unlock(&fs_info->super_lock); | |
3620 | } | |
3621 | } | |
3622 | ||
3623 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3624 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3625 | ||
3626 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3627 | { | |
3628 | struct btrfs_super_block *disk_super; | |
3629 | disk_super = fs_info->super_copy; | |
3630 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3631 | } | |
3632 | ||
33268eaf | 3633 | /* acl.c */ |
0eda294d | 3634 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3635 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3636 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3637 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3638 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3639 | #else |
ed8f3737 | 3640 | #define btrfs_get_acl NULL |
996a710d | 3641 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3642 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3643 | struct inode *inode, struct inode *dir) | |
3644 | { | |
3645 | return 0; | |
3646 | } | |
9b89d95a | 3647 | #endif |
0f9dd46c | 3648 | |
5d4f98a2 | 3649 | /* relocation.c */ |
6bccf3ab | 3650 | int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start); |
5d4f98a2 YZ |
3651 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, |
3652 | struct btrfs_root *root); | |
3653 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3654 | struct btrfs_root *root); | |
3655 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3656 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
3657 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3658 | struct btrfs_root *root, struct extent_buffer *buf, | |
3659 | struct extent_buffer *cow); | |
147d256e | 3660 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 3661 | u64 *bytes_to_reserve); |
49b25e05 | 3662 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3663 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3664 | |
3665 | /* scrub.c */ | |
aa1b8cd4 SB |
3666 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3667 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3668 | int readonly, int is_dev_replace); |
2ff7e61e JM |
3669 | void btrfs_scrub_pause(struct btrfs_fs_info *fs_info); |
3670 | void btrfs_scrub_continue(struct btrfs_fs_info *fs_info); | |
aa1b8cd4 SB |
3671 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
3672 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
3673 | struct btrfs_device *dev); | |
2ff7e61e | 3674 | int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid, |
a2de733c | 3675 | struct btrfs_scrub_progress *progress); |
0966a7b1 QW |
3676 | static inline void btrfs_init_full_stripe_locks_tree( |
3677 | struct btrfs_full_stripe_locks_tree *locks_root) | |
3678 | { | |
3679 | locks_root->root = RB_ROOT; | |
3680 | mutex_init(&locks_root->lock); | |
3681 | } | |
c404e0dc MX |
3682 | |
3683 | /* dev-replace.c */ | |
3684 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
3685 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
3686 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
3687 | ||
3688 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
3689 | { | |
3690 | btrfs_bio_counter_sub(fs_info, 1); | |
3691 | } | |
a2de733c | 3692 | |
7414a03f AJ |
3693 | /* reada.c */ |
3694 | struct reada_control { | |
c28f158e | 3695 | struct btrfs_fs_info *fs_info; /* tree to prefetch */ |
7414a03f AJ |
3696 | struct btrfs_key key_start; |
3697 | struct btrfs_key key_end; /* exclusive */ | |
3698 | atomic_t elems; | |
3699 | struct kref refcnt; | |
3700 | wait_queue_head_t wait; | |
3701 | }; | |
3702 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3703 | struct btrfs_key *start, struct btrfs_key *end); | |
3704 | int btrfs_reada_wait(void *handle); | |
3705 | void btrfs_reada_detach(void *handle); | |
d48d71aa | 3706 | int btree_readahead_hook(struct extent_buffer *eb, int err); |
7414a03f | 3707 | |
95a06077 JS |
3708 | static inline int is_fstree(u64 rootid) |
3709 | { | |
3710 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
3711 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
3712 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
3713 | return 1; |
3714 | return 0; | |
3715 | } | |
210549eb DS |
3716 | |
3717 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3718 | { | |
3719 | return signal_pending(current); | |
3720 | } | |
3721 | ||
aaedb55b JB |
3722 | /* Sanity test specific functions */ |
3723 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3724 | void btrfs_test_destroy_inode(struct inode *inode); | |
3725 | #endif | |
210549eb | 3726 | |
f5ee5c9a | 3727 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
fccb84c9 DS |
3728 | { |
3729 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
f5ee5c9a JM |
3730 | if (unlikely(test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, |
3731 | &fs_info->fs_state))) | |
fccb84c9 DS |
3732 | return 1; |
3733 | #endif | |
3734 | return 0; | |
3735 | } | |
eb60ceac | 3736 | #endif |