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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 CM |
22 | #include <linux/mm.h> |
23 | #include <linux/highmem.h> | |
e20d96d6 | 24 | #include <linux/fs.h> |
a2de733c | 25 | #include <linux/rwsem.h> |
803b2f54 | 26 | #include <linux/semaphore.h> |
58176a96 | 27 | #include <linux/completion.h> |
04160088 | 28 | #include <linux/backing-dev.h> |
e6dcd2dc | 29 | #include <linux/wait.h> |
5a0e3ad6 | 30 | #include <linux/slab.h> |
f8b18087 | 31 | #include <linux/kobject.h> |
1abe9b8a | 32 | #include <trace/events/btrfs.h> |
479965d6 | 33 | #include <asm/kmap_types.h> |
3b16a4e3 | 34 | #include <linux/pagemap.h> |
55e301fd | 35 | #include <linux/btrfs.h> |
db671160 | 36 | #include <linux/btrfs_tree.h> |
21c7e756 | 37 | #include <linux/workqueue.h> |
f667aef6 | 38 | #include <linux/security.h> |
ee22184b | 39 | #include <linux/sizes.h> |
d1310b2e | 40 | #include "extent_io.h" |
5f39d397 | 41 | #include "extent_map.h" |
8b712842 | 42 | #include "async-thread.h" |
e20d96d6 | 43 | |
e089f05c | 44 | struct btrfs_trans_handle; |
79154b1b | 45 | struct btrfs_transaction; |
a22285a6 | 46 | struct btrfs_pending_snapshot; |
35b7e476 CM |
47 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
48 | extern struct kmem_cache *btrfs_transaction_cachep; | |
49 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 50 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 51 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 52 | struct btrfs_ordered_sum; |
e089f05c | 53 | |
294e30fe JB |
54 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
55 | #define STATIC noinline | |
56 | #else | |
57 | #define STATIC static noinline | |
58 | #endif | |
59 | ||
cdb4c574 | 60 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 61 | |
72d7aefc | 62 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 63 | |
4008c04a | 64 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 65 | |
5d4f98a2 YZ |
66 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
67 | ||
727011e0 CM |
68 | /* |
69 | * the max metadata block size. This limit is somewhat artificial, | |
70 | * but the memmove costs go through the roof for larger blocks. | |
71 | */ | |
72 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
73 | ||
e20d96d6 CM |
74 | /* |
75 | * we can actually store much bigger names, but lets not confuse the rest | |
76 | * of linux | |
77 | */ | |
78 | #define BTRFS_NAME_LEN 255 | |
79 | ||
f186373f MF |
80 | /* |
81 | * Theoretical limit is larger, but we keep this down to a sane | |
82 | * value. That should limit greatly the possibility of collisions on | |
83 | * inode ref items. | |
84 | */ | |
85 | #define BTRFS_LINK_MAX 65535U | |
86 | ||
4d4ab6d6 | 87 | static const int btrfs_csum_sizes[] = { 4 }; |
607d432d | 88 | |
509659cd | 89 | /* four bytes for CRC32 */ |
3954401f | 90 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 91 | |
01327610 | 92 | /* specific to btrfs_map_block(), therefore not in include/linux/blk_types.h */ |
29a8d9a0 SB |
93 | #define REQ_GET_READ_MIRRORS (1 << 30) |
94 | ||
3d136a11 SB |
95 | /* ioprio of readahead is set to idle */ |
96 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
97 | ||
ee22184b | 98 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M |
e2d84521 | 99 | |
ee22184b | 100 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M |
dcab6a3b | 101 | |
0b86a832 CM |
102 | struct btrfs_mapping_tree { |
103 | struct extent_map_tree map_tree; | |
104 | }; | |
105 | ||
0b86a832 CM |
106 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
107 | { | |
108 | BUG_ON(num_stripes == 0); | |
109 | return sizeof(struct btrfs_chunk) + | |
110 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
111 | } | |
112 | ||
acce952b | 113 | /* |
114 | * File system states | |
115 | */ | |
87533c47 | 116 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 117 | #define BTRFS_FS_STATE_REMOUNTING 1 |
08748810 | 118 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
c404e0dc | 119 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
7c0260ee | 120 | #define BTRFS_FS_STATE_DUMMY_FS_INFO 4 |
acce952b | 121 | |
5d4f98a2 YZ |
122 | #define BTRFS_BACKREF_REV_MAX 256 |
123 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
124 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
125 | BTRFS_BACKREF_REV_SHIFT) | |
126 | ||
127 | #define BTRFS_OLD_BACKREF_REV 0 | |
128 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 129 | |
fec577fb CM |
130 | /* |
131 | * every tree block (leaf or node) starts with this header. | |
132 | */ | |
bb492bb0 | 133 | struct btrfs_header { |
e17cade2 | 134 | /* these first four must match the super block */ |
f254e52c | 135 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 136 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 137 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 138 | __le64 flags; |
e17cade2 CM |
139 | |
140 | /* allowed to be different from the super from here on down */ | |
141 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 142 | __le64 generation; |
4d775673 | 143 | __le64 owner; |
5f39d397 | 144 | __le32 nritems; |
9a6f11ed | 145 | u8 level; |
eb60ceac CM |
146 | } __attribute__ ((__packed__)); |
147 | ||
0b86a832 CM |
148 | /* |
149 | * this is a very generous portion of the super block, giving us | |
150 | * room to translate 14 chunks with 3 stripes each. | |
151 | */ | |
152 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
153 | ||
af31f5e5 CM |
154 | /* |
155 | * just in case we somehow lose the roots and are not able to mount, | |
156 | * we store an array of the roots from previous transactions | |
157 | * in the super. | |
158 | */ | |
159 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
160 | struct btrfs_root_backup { | |
161 | __le64 tree_root; | |
162 | __le64 tree_root_gen; | |
163 | ||
164 | __le64 chunk_root; | |
165 | __le64 chunk_root_gen; | |
166 | ||
167 | __le64 extent_root; | |
168 | __le64 extent_root_gen; | |
169 | ||
170 | __le64 fs_root; | |
171 | __le64 fs_root_gen; | |
172 | ||
173 | __le64 dev_root; | |
174 | __le64 dev_root_gen; | |
175 | ||
176 | __le64 csum_root; | |
177 | __le64 csum_root_gen; | |
178 | ||
179 | __le64 total_bytes; | |
180 | __le64 bytes_used; | |
181 | __le64 num_devices; | |
182 | /* future */ | |
d1423248 | 183 | __le64 unused_64[4]; |
af31f5e5 CM |
184 | |
185 | u8 tree_root_level; | |
186 | u8 chunk_root_level; | |
187 | u8 extent_root_level; | |
188 | u8 fs_root_level; | |
189 | u8 dev_root_level; | |
190 | u8 csum_root_level; | |
191 | /* future and to align */ | |
192 | u8 unused_8[10]; | |
193 | } __attribute__ ((__packed__)); | |
194 | ||
fec577fb CM |
195 | /* |
196 | * the super block basically lists the main trees of the FS | |
197 | * it currently lacks any block count etc etc | |
198 | */ | |
234b63a0 | 199 | struct btrfs_super_block { |
f254e52c | 200 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 201 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 202 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 203 | __le64 bytenr; /* this block number */ |
63b10fc4 | 204 | __le64 flags; |
e17cade2 CM |
205 | |
206 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 207 | __le64 magic; |
3768f368 CM |
208 | __le64 generation; |
209 | __le64 root; | |
0b86a832 | 210 | __le64 chunk_root; |
e02119d5 | 211 | __le64 log_root; |
c3027eb5 CM |
212 | |
213 | /* this will help find the new super based on the log root */ | |
214 | __le64 log_root_transid; | |
db94535d CM |
215 | __le64 total_bytes; |
216 | __le64 bytes_used; | |
2e635a27 | 217 | __le64 root_dir_objectid; |
8a4b83cc | 218 | __le64 num_devices; |
5f39d397 CM |
219 | __le32 sectorsize; |
220 | __le32 nodesize; | |
707e8a07 | 221 | __le32 __unused_leafsize; |
87ee04eb | 222 | __le32 stripesize; |
0b86a832 | 223 | __le32 sys_chunk_array_size; |
84234f3a | 224 | __le64 chunk_root_generation; |
f2b636e8 JB |
225 | __le64 compat_flags; |
226 | __le64 compat_ro_flags; | |
227 | __le64 incompat_flags; | |
607d432d | 228 | __le16 csum_type; |
db94535d | 229 | u8 root_level; |
0b86a832 | 230 | u8 chunk_root_level; |
e02119d5 | 231 | u8 log_root_level; |
0d81ba5d | 232 | struct btrfs_dev_item dev_item; |
c3027eb5 | 233 | |
7ae9c09d | 234 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 235 | |
0af3d00b | 236 | __le64 cache_generation; |
26432799 | 237 | __le64 uuid_tree_generation; |
0af3d00b | 238 | |
c3027eb5 | 239 | /* future expansion */ |
26432799 | 240 | __le64 reserved[30]; |
0b86a832 | 241 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 242 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
243 | } __attribute__ ((__packed__)); |
244 | ||
f2b636e8 JB |
245 | /* |
246 | * Compat flags that we support. If any incompat flags are set other than the | |
247 | * ones specified below then we will fail to mount | |
248 | */ | |
5d4f98a2 | 249 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
250 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
251 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
70f6d82e OS |
252 | |
253 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ | |
6675df31 OS |
254 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE | \ |
255 | BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID) | |
70f6d82e | 256 | |
2eaa055f JM |
257 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
258 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
259 | ||
0af3d00b JB |
260 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
261 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 262 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 263 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 264 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 265 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
53b381b3 | 266 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 267 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f JB |
268 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
269 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) | |
f2b636e8 | 270 | |
2eaa055f JM |
271 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
272 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
273 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 274 | |
fec577fb | 275 | /* |
62e2749e | 276 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
277 | * the item in the leaf (relative to the start of the data area) |
278 | */ | |
0783fcfc | 279 | struct btrfs_item { |
e2fa7227 | 280 | struct btrfs_disk_key key; |
123abc88 | 281 | __le32 offset; |
5f39d397 | 282 | __le32 size; |
eb60ceac CM |
283 | } __attribute__ ((__packed__)); |
284 | ||
fec577fb CM |
285 | /* |
286 | * leaves have an item area and a data area: | |
287 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
288 | * | |
289 | * The data is separate from the items to get the keys closer together | |
290 | * during searches. | |
291 | */ | |
234b63a0 | 292 | struct btrfs_leaf { |
bb492bb0 | 293 | struct btrfs_header header; |
123abc88 | 294 | struct btrfs_item items[]; |
eb60ceac CM |
295 | } __attribute__ ((__packed__)); |
296 | ||
fec577fb CM |
297 | /* |
298 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
299 | * other blocks | |
300 | */ | |
123abc88 CM |
301 | struct btrfs_key_ptr { |
302 | struct btrfs_disk_key key; | |
303 | __le64 blockptr; | |
74493f7a | 304 | __le64 generation; |
123abc88 CM |
305 | } __attribute__ ((__packed__)); |
306 | ||
234b63a0 | 307 | struct btrfs_node { |
bb492bb0 | 308 | struct btrfs_header header; |
123abc88 | 309 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
310 | } __attribute__ ((__packed__)); |
311 | ||
fec577fb | 312 | /* |
234b63a0 CM |
313 | * btrfs_paths remember the path taken from the root down to the leaf. |
314 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
315 | * to any other levels that are present. |
316 | * | |
317 | * The slots array records the index of the item or block pointer | |
318 | * used while walking the tree. | |
319 | */ | |
e4058b54 | 320 | enum { READA_NONE = 0, READA_BACK, READA_FORWARD }; |
234b63a0 | 321 | struct btrfs_path { |
5f39d397 | 322 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 323 | int slots[BTRFS_MAX_LEVEL]; |
925baedd | 324 | /* if there is real range locking, this locks field will change */ |
4fb72bf2 | 325 | u8 locks[BTRFS_MAX_LEVEL]; |
dccabfad | 326 | u8 reada; |
925baedd | 327 | /* keep some upper locks as we walk down */ |
7853f15b | 328 | u8 lowest_level; |
459931ec CM |
329 | |
330 | /* | |
331 | * set by btrfs_split_item, tells search_slot to keep all locks | |
332 | * and to force calls to keep space in the nodes | |
333 | */ | |
b9473439 CM |
334 | unsigned int search_for_split:1; |
335 | unsigned int keep_locks:1; | |
336 | unsigned int skip_locking:1; | |
337 | unsigned int leave_spinning:1; | |
5d4f98a2 | 338 | unsigned int search_commit_root:1; |
3f8a18cc | 339 | unsigned int need_commit_sem:1; |
5f5bc6b1 | 340 | unsigned int skip_release_on_error:1; |
eb60ceac | 341 | }; |
5d4f98a2 YZ |
342 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
343 | sizeof(struct btrfs_item)) | |
e922e087 SB |
344 | struct btrfs_dev_replace { |
345 | u64 replace_state; /* see #define above */ | |
346 | u64 time_started; /* seconds since 1-Jan-1970 */ | |
347 | u64 time_stopped; /* seconds since 1-Jan-1970 */ | |
348 | atomic64_t num_write_errors; | |
349 | atomic64_t num_uncorrectable_read_errors; | |
350 | ||
351 | u64 cursor_left; | |
352 | u64 committed_cursor_left; | |
353 | u64 cursor_left_last_write_of_item; | |
354 | u64 cursor_right; | |
355 | ||
356 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
357 | ||
358 | int is_valid; | |
359 | int item_needs_writeback; | |
360 | struct btrfs_device *srcdev; | |
361 | struct btrfs_device *tgtdev; | |
362 | ||
363 | pid_t lock_owner; | |
364 | atomic_t nesting_level; | |
365 | struct mutex lock_finishing_cancel_unmount; | |
73beece9 LB |
366 | rwlock_t lock; |
367 | atomic_t read_locks; | |
368 | atomic_t blocking_readers; | |
369 | wait_queue_head_t read_lock_wq; | |
e922e087 SB |
370 | |
371 | struct btrfs_scrub_progress scrub_progress; | |
372 | }; | |
373 | ||
c1895442 JM |
374 | /* For raid type sysfs entries */ |
375 | struct raid_kobject { | |
376 | int raid_type; | |
377 | struct kobject kobj; | |
378 | }; | |
379 | ||
6324fbf3 | 380 | struct btrfs_space_info { |
26b47ff6 | 381 | spinlock_t lock; |
6a63209f | 382 | |
89a55897 JB |
383 | u64 total_bytes; /* total bytes in the space, |
384 | this doesn't take mirrors into account */ | |
b742bb82 | 385 | u64 bytes_used; /* total bytes used, |
e9c54999 | 386 | this doesn't take mirrors into account */ |
6a63209f JB |
387 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
388 | transaction finishes */ | |
389 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
390 | current allocations */ | |
6a63209f | 391 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 392 | delalloc/allocations */ |
26b47ff6 MX |
393 | u64 bytes_readonly; /* total bytes that are read only */ |
394 | ||
4f4db217 JB |
395 | u64 max_extent_size; /* This will hold the maximum extent size of |
396 | the space info if we had an ENOSPC in the | |
397 | allocator. */ | |
398 | ||
26b47ff6 MX |
399 | unsigned int full:1; /* indicates that we cannot allocate any more |
400 | chunks for this space */ | |
401 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
402 | ||
403 | unsigned int flush:1; /* set if we are trying to make space */ | |
404 | ||
405 | unsigned int force_alloc; /* set if we need to force a chunk | |
406 | alloc for this space */ | |
407 | ||
b742bb82 | 408 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
409 | u64 disk_total; /* total bytes on disk, takes mirrors into |
410 | account */ | |
6a63209f | 411 | |
26b47ff6 MX |
412 | u64 flags; |
413 | ||
b150a4f1 JB |
414 | /* |
415 | * bytes_pinned is kept in line with what is actually pinned, as in | |
416 | * we've called update_block_group and dropped the bytes_used counter | |
417 | * and increased the bytes_pinned counter. However this means that | |
418 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
bb7ab3b9 AB |
419 | * delayed refs are flushed, so this counter is inc'ed every time we |
420 | * call btrfs_free_extent so it is a realtime count of what will be | |
01327610 | 421 | * freed once the transaction is committed. It will be zeroed every |
bb7ab3b9 | 422 | * time the transaction commits. |
b150a4f1 JB |
423 | */ |
424 | struct percpu_counter total_bytes_pinned; | |
425 | ||
6324fbf3 | 426 | struct list_head list; |
75c68e9f | 427 | /* Protected by the spinlock 'lock'. */ |
633c0aad | 428 | struct list_head ro_bgs; |
957780eb JB |
429 | struct list_head priority_tickets; |
430 | struct list_head tickets; | |
ce129655 | 431 | u64 tickets_id; |
0f9dd46c | 432 | |
26b47ff6 | 433 | struct rw_semaphore groups_sem; |
0f9dd46c | 434 | /* for block groups in our same type */ |
b742bb82 | 435 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 436 | wait_queue_head_t wait; |
6ab0a202 JM |
437 | |
438 | struct kobject kobj; | |
c1895442 | 439 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
0f9dd46c JB |
440 | }; |
441 | ||
66d8f3dd MX |
442 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
443 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
444 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
445 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
446 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
447 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
448 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
449 | ||
f0486c68 YZ |
450 | struct btrfs_block_rsv { |
451 | u64 size; | |
452 | u64 reserved; | |
f0486c68 | 453 | struct btrfs_space_info *space_info; |
f0486c68 | 454 | spinlock_t lock; |
66d8f3dd MX |
455 | unsigned short full; |
456 | unsigned short type; | |
457 | unsigned short failfast; | |
f0486c68 YZ |
458 | }; |
459 | ||
fa9c0d79 CM |
460 | /* |
461 | * free clusters are used to claim free space in relatively large chunks, | |
462 | * allowing us to do less seeky writes. They are used for all metadata | |
463 | * allocations and data allocations in ssd mode. | |
464 | */ | |
465 | struct btrfs_free_cluster { | |
466 | spinlock_t lock; | |
467 | spinlock_t refill_lock; | |
468 | struct rb_root root; | |
469 | ||
470 | /* largest extent in this cluster */ | |
471 | u64 max_size; | |
472 | ||
473 | /* first extent starting offset */ | |
474 | u64 window_start; | |
475 | ||
c759c4e1 JB |
476 | /* We did a full search and couldn't create a cluster */ |
477 | bool fragmented; | |
478 | ||
fa9c0d79 CM |
479 | struct btrfs_block_group_cache *block_group; |
480 | /* | |
481 | * when a cluster is allocated from a block group, we put the | |
482 | * cluster onto a list in the block group so that it can | |
483 | * be freed before the block group is freed. | |
484 | */ | |
485 | struct list_head block_group_list; | |
6324fbf3 CM |
486 | }; |
487 | ||
817d52f8 JB |
488 | enum btrfs_caching_type { |
489 | BTRFS_CACHE_NO = 0, | |
490 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
491 | BTRFS_CACHE_FAST = 2, |
492 | BTRFS_CACHE_FINISHED = 3, | |
36cce922 | 493 | BTRFS_CACHE_ERROR = 4, |
817d52f8 JB |
494 | }; |
495 | ||
0af3d00b JB |
496 | enum btrfs_disk_cache_state { |
497 | BTRFS_DC_WRITTEN = 0, | |
498 | BTRFS_DC_ERROR = 1, | |
499 | BTRFS_DC_CLEAR = 2, | |
500 | BTRFS_DC_SETUP = 3, | |
0af3d00b JB |
501 | }; |
502 | ||
11833d66 YZ |
503 | struct btrfs_caching_control { |
504 | struct list_head list; | |
505 | struct mutex mutex; | |
506 | wait_queue_head_t wait; | |
bab39bf9 | 507 | struct btrfs_work work; |
11833d66 YZ |
508 | struct btrfs_block_group_cache *block_group; |
509 | u64 progress; | |
510 | atomic_t count; | |
511 | }; | |
512 | ||
73fa48b6 OS |
513 | /* Once caching_thread() finds this much free space, it will wake up waiters. */ |
514 | #define CACHING_CTL_WAKE_UP (1024 * 1024 * 2) | |
515 | ||
4c6d1d85 CM |
516 | struct btrfs_io_ctl { |
517 | void *cur, *orig; | |
518 | struct page *page; | |
519 | struct page **pages; | |
520 | struct btrfs_root *root; | |
c9dc4c65 | 521 | struct inode *inode; |
4c6d1d85 CM |
522 | unsigned long size; |
523 | int index; | |
524 | int num_pages; | |
c9dc4c65 CM |
525 | int entries; |
526 | int bitmaps; | |
4c6d1d85 CM |
527 | unsigned check_crcs:1; |
528 | }; | |
529 | ||
9078a3e1 CM |
530 | struct btrfs_block_group_cache { |
531 | struct btrfs_key key; | |
532 | struct btrfs_block_group_item item; | |
817d52f8 | 533 | struct btrfs_fs_info *fs_info; |
0af3d00b | 534 | struct inode *inode; |
c286ac48 | 535 | spinlock_t lock; |
324ae4df | 536 | u64 pinned; |
e8569813 | 537 | u64 reserved; |
e570fd27 | 538 | u64 delalloc_bytes; |
1b2da372 | 539 | u64 bytes_super; |
0b86a832 | 540 | u64 flags; |
5b0e95bf | 541 | u64 cache_generation; |
a5ed9182 OS |
542 | u32 sectorsize; |
543 | ||
544 | /* | |
545 | * If the free space extent count exceeds this number, convert the block | |
546 | * group to bitmaps. | |
547 | */ | |
548 | u32 bitmap_high_thresh; | |
549 | ||
550 | /* | |
551 | * If the free space extent count drops below this number, convert the | |
552 | * block group back to extents. | |
553 | */ | |
554 | u32 bitmap_low_thresh; | |
53b381b3 | 555 | |
e570fd27 MX |
556 | /* |
557 | * It is just used for the delayed data space allocation because | |
558 | * only the data space allocation and the relative metadata update | |
559 | * can be done cross the transaction. | |
560 | */ | |
561 | struct rw_semaphore data_rwsem; | |
562 | ||
53b381b3 DW |
563 | /* for raid56, this is a full stripe, without parity */ |
564 | unsigned long full_stripe_len; | |
565 | ||
868f401a | 566 | unsigned int ro; |
0410c94a | 567 | unsigned int iref:1; |
4f69cb98 | 568 | unsigned int has_caching_ctl:1; |
04216820 | 569 | unsigned int removed:1; |
0af3d00b JB |
570 | |
571 | int disk_cache_state; | |
0f9dd46c | 572 | |
817d52f8 | 573 | /* cache tracking stuff */ |
817d52f8 | 574 | int cached; |
11833d66 YZ |
575 | struct btrfs_caching_control *caching_ctl; |
576 | u64 last_byte_to_unpin; | |
817d52f8 | 577 | |
0f9dd46c JB |
578 | struct btrfs_space_info *space_info; |
579 | ||
580 | /* free space cache stuff */ | |
34d52cb6 | 581 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
582 | |
583 | /* block group cache stuff */ | |
584 | struct rb_node cache_node; | |
585 | ||
586 | /* for block groups in the same raid type */ | |
587 | struct list_head list; | |
d2fb3437 YZ |
588 | |
589 | /* usage count */ | |
590 | atomic_t count; | |
fa9c0d79 CM |
591 | |
592 | /* List of struct btrfs_free_clusters for this block group. | |
593 | * Today it will only have one thing on it, but that may change | |
594 | */ | |
595 | struct list_head cluster_list; | |
ea658bad | 596 | |
47ab2a6c JB |
597 | /* For delayed block group creation or deletion of empty block groups */ |
598 | struct list_head bg_list; | |
633c0aad JB |
599 | |
600 | /* For read-only block groups */ | |
601 | struct list_head ro_list; | |
04216820 FM |
602 | |
603 | atomic_t trimming; | |
ce93ec54 JB |
604 | |
605 | /* For dirty block groups */ | |
606 | struct list_head dirty_list; | |
c9dc4c65 CM |
607 | struct list_head io_list; |
608 | ||
609 | struct btrfs_io_ctl io_ctl; | |
a5ed9182 | 610 | |
9cfa3e34 FM |
611 | /* |
612 | * Incremented when doing extent allocations and holding a read lock | |
613 | * on the space_info's groups_sem semaphore. | |
614 | * Decremented when an ordered extent that represents an IO against this | |
615 | * block group's range is created (after it's added to its inode's | |
616 | * root's list of ordered extents) or immediately after the allocation | |
617 | * if it's a metadata extent or fallocate extent (for these cases we | |
618 | * don't create ordered extents). | |
619 | */ | |
620 | atomic_t reservations; | |
621 | ||
f78c436c FM |
622 | /* |
623 | * Incremented while holding the spinlock *lock* by a task checking if | |
624 | * it can perform a nocow write (incremented if the value for the *ro* | |
625 | * field is 0). Decremented by such tasks once they create an ordered | |
626 | * extent or before that if some error happens before reaching that step. | |
627 | * This is to prevent races between block group relocation and nocow | |
628 | * writes through direct IO. | |
629 | */ | |
630 | atomic_t nocow_writers; | |
631 | ||
a5ed9182 OS |
632 | /* Lock for free space tree operations. */ |
633 | struct mutex free_space_lock; | |
634 | ||
635 | /* | |
636 | * Does the block group need to be added to the free space tree? | |
637 | * Protected by free_space_lock. | |
638 | */ | |
639 | int needs_free_space; | |
9078a3e1 | 640 | }; |
0b86a832 | 641 | |
097b8a7c JS |
642 | /* delayed seq elem */ |
643 | struct seq_list { | |
644 | struct list_head list; | |
645 | u64 seq; | |
646 | }; | |
647 | ||
3284da7b DS |
648 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
649 | ||
5d80366e JB |
650 | enum btrfs_orphan_cleanup_state { |
651 | ORPHAN_CLEANUP_STARTED = 1, | |
652 | ORPHAN_CLEANUP_DONE = 2, | |
653 | }; | |
654 | ||
53b381b3 DW |
655 | /* used by the raid56 code to lock stripes for read/modify/write */ |
656 | struct btrfs_stripe_hash { | |
657 | struct list_head hash_list; | |
658 | wait_queue_head_t wait; | |
659 | spinlock_t lock; | |
660 | }; | |
661 | ||
662 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
663 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
664 | struct list_head stripe_cache; |
665 | spinlock_t cache_lock; | |
666 | int cache_size; | |
667 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
668 | }; |
669 | ||
670 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
671 | ||
21c7e756 MX |
672 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
673 | ||
097b8a7c | 674 | /* fs_info */ |
5d4f98a2 | 675 | struct reloc_control; |
0b86a832 | 676 | struct btrfs_device; |
8a4b83cc | 677 | struct btrfs_fs_devices; |
c9e9f97b | 678 | struct btrfs_balance_control; |
16cdcec7 | 679 | struct btrfs_delayed_root; |
9f5fae2f | 680 | struct btrfs_fs_info { |
5f39d397 | 681 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 682 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
683 | struct btrfs_root *extent_root; |
684 | struct btrfs_root *tree_root; | |
0b86a832 CM |
685 | struct btrfs_root *chunk_root; |
686 | struct btrfs_root *dev_root; | |
3de4586c | 687 | struct btrfs_root *fs_root; |
d20f7043 | 688 | struct btrfs_root *csum_root; |
416ac51d | 689 | struct btrfs_root *quota_root; |
f7a81ea4 | 690 | struct btrfs_root *uuid_root; |
a5ed9182 | 691 | struct btrfs_root *free_space_root; |
e02119d5 CM |
692 | |
693 | /* the log root tree is a directory of all the other log roots */ | |
694 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
695 | |
696 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 697 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 698 | |
0f9dd46c JB |
699 | /* block group cache stuff */ |
700 | spinlock_t block_group_cache_lock; | |
a1897fdd | 701 | u64 first_logical_byte; |
0f9dd46c JB |
702 | struct rb_root block_group_cache_tree; |
703 | ||
2bf64758 JB |
704 | /* keep track of unallocated space */ |
705 | spinlock_t free_chunk_lock; | |
706 | u64 free_chunk_space; | |
707 | ||
11833d66 YZ |
708 | struct extent_io_tree freed_extents[2]; |
709 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 710 | |
0b86a832 CM |
711 | /* logical->physical extent mapping */ |
712 | struct btrfs_mapping_tree mapping_tree; | |
713 | ||
16cdcec7 MX |
714 | /* |
715 | * block reservation for extent, checksum, root tree and | |
716 | * delayed dir index item | |
717 | */ | |
f0486c68 YZ |
718 | struct btrfs_block_rsv global_block_rsv; |
719 | /* block reservation for delay allocation */ | |
720 | struct btrfs_block_rsv delalloc_block_rsv; | |
721 | /* block reservation for metadata operations */ | |
722 | struct btrfs_block_rsv trans_block_rsv; | |
723 | /* block reservation for chunk tree */ | |
724 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
725 | /* block reservation for delayed operations */ |
726 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
727 | |
728 | struct btrfs_block_rsv empty_block_rsv; | |
729 | ||
293ffd5f | 730 | u64 generation; |
15ee9bc7 | 731 | u64 last_trans_committed; |
0a2b2a84 | 732 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
733 | |
734 | /* | |
735 | * this is updated to the current trans every time a full commit | |
736 | * is required instead of the faster short fsync log commits | |
737 | */ | |
738 | u64 last_trans_log_full_commit; | |
25cd999e | 739 | unsigned long mount_opt; |
572d9ab7 DS |
740 | /* |
741 | * Track requests for actions that need to be done during transaction | |
742 | * commit (like for some mount options). | |
743 | */ | |
744 | unsigned long pending_changes; | |
261507a0 | 745 | unsigned long compress_type:4; |
8b87dc17 | 746 | int commit_interval; |
8c6a3ee6 MX |
747 | /* |
748 | * It is a suggestive number, the read side is safe even it gets a | |
749 | * wrong number because we will write out the data into a regular | |
750 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
751 | * so it is also safe. | |
752 | */ | |
6f568d35 | 753 | u64 max_inline; |
c018daec MX |
754 | /* |
755 | * Protected by ->chunk_mutex and sb->s_umount. | |
756 | * | |
757 | * The reason that we use two lock to protect it is because only | |
758 | * remount and mount operations can change it and these two operations | |
759 | * are under sb->s_umount, but the read side (chunk allocation) can not | |
760 | * acquire sb->s_umount or the deadlock would happen. So we use two | |
761 | * locks to protect it. On the write side, we must acquire two locks, | |
762 | * and on the read side, we just need acquire one of them. | |
763 | */ | |
8f662a76 | 764 | u64 alloc_start; |
79154b1b | 765 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 766 | wait_queue_head_t transaction_throttle; |
f9295749 | 767 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 768 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 769 | wait_queue_head_t async_submit_wait; |
e02119d5 | 770 | |
ceda0864 MX |
771 | /* |
772 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
773 | * when they are updated. | |
774 | * | |
775 | * Because we do not clear the flags for ever, so we needn't use | |
776 | * the lock on the read side. | |
777 | * | |
778 | * We also needn't use the lock when we mount the fs, because | |
779 | * there is no other task which will update the flag. | |
780 | */ | |
781 | spinlock_t super_lock; | |
6c41761f DS |
782 | struct btrfs_super_block *super_copy; |
783 | struct btrfs_super_block *super_for_commit; | |
0b86a832 | 784 | struct block_device *__bdev; |
e20d96d6 | 785 | struct super_block *sb; |
d98237b3 | 786 | struct inode *btree_inode; |
04160088 | 787 | struct backing_dev_info bdi; |
e02119d5 | 788 | struct mutex tree_log_mutex; |
a74a4b97 CM |
789 | struct mutex transaction_kthread_mutex; |
790 | struct mutex cleaner_mutex; | |
925baedd | 791 | struct mutex chunk_mutex; |
7d9eb12c | 792 | struct mutex volume_mutex; |
53b381b3 | 793 | |
1bbc621e CM |
794 | /* |
795 | * this is taken to make sure we don't set block groups ro after | |
796 | * the free space cache has been allocated on them | |
797 | */ | |
798 | struct mutex ro_block_group_mutex; | |
799 | ||
53b381b3 DW |
800 | /* this is used during read/modify/write to make sure |
801 | * no two ios are trying to mod the same stripe at the same | |
802 | * time | |
803 | */ | |
804 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
805 | ||
5a3f23d5 CM |
806 | /* |
807 | * this protects the ordered operations list only while we are | |
808 | * processing all of the entries on it. This way we make | |
809 | * sure the commit code doesn't find the list temporarily empty | |
810 | * because another function happens to be doing non-waiting preflush | |
811 | * before jumping into the main commit. | |
812 | */ | |
813 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 814 | |
9e351cc8 | 815 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 816 | |
c71bf099 | 817 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 818 | |
c71bf099 | 819 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
820 | struct srcu_struct subvol_srcu; |
821 | ||
a4abeea4 | 822 | spinlock_t trans_lock; |
7585717f CM |
823 | /* |
824 | * the reloc mutex goes with the trans lock, it is taken | |
825 | * during commit to protect us from the relocation code | |
826 | */ | |
827 | struct mutex reloc_mutex; | |
828 | ||
8fd17795 | 829 | struct list_head trans_list; |
facda1e7 | 830 | struct list_head dead_roots; |
11833d66 | 831 | struct list_head caching_block_groups; |
e02119d5 | 832 | |
24bbcf04 YZ |
833 | spinlock_t delayed_iput_lock; |
834 | struct list_head delayed_iputs; | |
c2d6cb16 | 835 | struct mutex cleaner_delayed_iput_mutex; |
24bbcf04 | 836 | |
f29021b2 JS |
837 | /* this protects tree_mod_seq_list */ |
838 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 839 | atomic64_t tree_mod_seq; |
f29021b2 JS |
840 | struct list_head tree_mod_seq_list; |
841 | ||
842 | /* this protects tree_mod_log */ | |
843 | rwlock_t tree_mod_log_lock; | |
844 | struct rb_root tree_mod_log; | |
845 | ||
cb03c743 | 846 | atomic_t nr_async_submits; |
8c8bee1d | 847 | atomic_t async_submit_draining; |
0986fe9e | 848 | atomic_t nr_async_bios; |
771ed689 | 849 | atomic_t async_delalloc_pages; |
a4abeea4 | 850 | atomic_t open_ioctl_trans; |
ce9adaa5 | 851 | |
3eaa2885 | 852 | /* |
199c2a9c | 853 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 854 | */ |
199c2a9c | 855 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
856 | |
857 | /* | |
199c2a9c MX |
858 | * all fs/file tree roots in which there are data=ordered extents |
859 | * pending writeback are added into this list. | |
860 | * | |
5a3f23d5 CM |
861 | * these can span multiple transactions and basically include |
862 | * every dirty data page that isn't from nodatacow | |
863 | */ | |
199c2a9c | 864 | struct list_head ordered_roots; |
5a3f23d5 | 865 | |
573bfb72 | 866 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
867 | spinlock_t delalloc_root_lock; |
868 | /* all fs/file tree roots that have delalloc inodes. */ | |
869 | struct list_head delalloc_roots; | |
3eaa2885 | 870 | |
8b712842 CM |
871 | /* |
872 | * there is a pool of worker threads for checksumming during writes | |
873 | * and a pool for checksumming after reads. This is because readers | |
874 | * can run with FS locks held, and the writers may be waiting for | |
875 | * those locks. We don't want ordering in the pending list to cause | |
876 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
877 | * |
878 | * A third pool does submit_bio to avoid deadlocking with the other | |
879 | * two | |
8b712842 | 880 | */ |
d458b054 QW |
881 | struct btrfs_workqueue *workers; |
882 | struct btrfs_workqueue *delalloc_workers; | |
883 | struct btrfs_workqueue *flush_workers; | |
884 | struct btrfs_workqueue *endio_workers; | |
885 | struct btrfs_workqueue *endio_meta_workers; | |
886 | struct btrfs_workqueue *endio_raid56_workers; | |
8b110e39 | 887 | struct btrfs_workqueue *endio_repair_workers; |
d458b054 QW |
888 | struct btrfs_workqueue *rmw_workers; |
889 | struct btrfs_workqueue *endio_meta_write_workers; | |
890 | struct btrfs_workqueue *endio_write_workers; | |
891 | struct btrfs_workqueue *endio_freespace_worker; | |
892 | struct btrfs_workqueue *submit_workers; | |
893 | struct btrfs_workqueue *caching_workers; | |
894 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 895 | |
247e743c CM |
896 | /* |
897 | * fixup workers take dirty pages that didn't properly go through | |
898 | * the cow mechanism and make them safe to write. It happens | |
899 | * for the sys_munmap function call path | |
900 | */ | |
d458b054 QW |
901 | struct btrfs_workqueue *fixup_workers; |
902 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b CM |
903 | |
904 | /* the extent workers do delayed refs on the extent allocation tree */ | |
905 | struct btrfs_workqueue *extent_workers; | |
a74a4b97 CM |
906 | struct task_struct *transaction_kthread; |
907 | struct task_struct *cleaner_kthread; | |
4543df7e | 908 | int thread_pool_size; |
8b712842 | 909 | |
6ab0a202 | 910 | struct kobject *space_info_kobj; |
e66f709b | 911 | int do_barriers; |
facda1e7 | 912 | int closing; |
e02119d5 | 913 | int log_root_recovering; |
47ab2a6c | 914 | int open; |
9f5fae2f | 915 | |
324ae4df | 916 | u64 total_pinned; |
b9473439 | 917 | |
e2d84521 MX |
918 | /* used to keep from writing metadata until there is a nice batch */ |
919 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 920 | struct percpu_counter delalloc_bytes; |
e2d84521 | 921 | s32 dirty_metadata_batch; |
963d678b MX |
922 | s32 delalloc_batch; |
923 | ||
0b86a832 CM |
924 | struct list_head dirty_cowonly_roots; |
925 | ||
8a4b83cc | 926 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
927 | |
928 | /* | |
929 | * the space_info list is almost entirely read only. It only changes | |
930 | * when we add a new raid type to the FS, and that happens | |
931 | * very rarely. RCU is used to protect it. | |
932 | */ | |
6324fbf3 | 933 | struct list_head space_info; |
4184ea7f | 934 | |
b4d7c3c9 LZ |
935 | struct btrfs_space_info *data_sinfo; |
936 | ||
5d4f98a2 YZ |
937 | struct reloc_control *reloc_ctl; |
938 | ||
fa9c0d79 CM |
939 | /* data_alloc_cluster is only used in ssd mode */ |
940 | struct btrfs_free_cluster data_alloc_cluster; | |
941 | ||
942 | /* all metadata allocations go through this cluster */ | |
943 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 944 | |
4cb5300b CM |
945 | /* auto defrag inodes go here */ |
946 | spinlock_t defrag_inodes_lock; | |
947 | struct rb_root defrag_inodes; | |
948 | atomic_t defrag_running; | |
949 | ||
de98ced9 MX |
950 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
951 | seqlock_t profiles_lock; | |
a46d11a8 ID |
952 | /* |
953 | * these three are in extended format (availability of single | |
954 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
955 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
956 | */ | |
d18a2c44 CM |
957 | u64 avail_data_alloc_bits; |
958 | u64 avail_metadata_alloc_bits; | |
959 | u64 avail_system_alloc_bits; | |
788f20eb | 960 | |
c9e9f97b ID |
961 | /* restriper state */ |
962 | spinlock_t balance_lock; | |
963 | struct mutex balance_mutex; | |
837d5b6e ID |
964 | atomic_t balance_running; |
965 | atomic_t balance_pause_req; | |
a7e99c69 | 966 | atomic_t balance_cancel_req; |
c9e9f97b | 967 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 968 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 969 | |
97e728d4 JB |
970 | unsigned data_chunk_allocations; |
971 | unsigned metadata_ratio; | |
972 | ||
788f20eb | 973 | void *bdev_holder; |
acce952b | 974 | |
a2de733c AJ |
975 | /* private scrub information */ |
976 | struct mutex scrub_lock; | |
977 | atomic_t scrubs_running; | |
978 | atomic_t scrub_pause_req; | |
979 | atomic_t scrubs_paused; | |
980 | atomic_t scrub_cancel_req; | |
981 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 982 | int scrub_workers_refcnt; |
d458b054 QW |
983 | struct btrfs_workqueue *scrub_workers; |
984 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
985 | struct btrfs_workqueue *scrub_nocow_workers; | |
20b2e302 | 986 | struct btrfs_workqueue *scrub_parity_workers; |
a2de733c | 987 | |
21adbd5c SB |
988 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
989 | u32 check_integrity_print_mask; | |
990 | #endif | |
416ac51d AJ |
991 | /* |
992 | * quota information | |
993 | */ | |
994 | unsigned int quota_enabled:1; | |
995 | ||
996 | /* | |
997 | * quota_enabled only changes state after a commit. This holds the | |
998 | * next state. | |
999 | */ | |
1000 | unsigned int pending_quota_state:1; | |
1001 | ||
1002 | /* is qgroup tracking in a consistent state? */ | |
1003 | u64 qgroup_flags; | |
1004 | ||
1005 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1006 | struct rb_root qgroup_tree; | |
fcebe456 | 1007 | struct rb_root qgroup_op_tree; |
416ac51d | 1008 | spinlock_t qgroup_lock; |
fcebe456 JB |
1009 | spinlock_t qgroup_op_lock; |
1010 | atomic_t qgroup_op_seq; | |
416ac51d | 1011 | |
1e8f9158 WS |
1012 | /* |
1013 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1014 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1015 | */ | |
1016 | struct ulist *qgroup_ulist; | |
1017 | ||
f2f6ed3d WS |
1018 | /* protect user change for quota operations */ |
1019 | struct mutex qgroup_ioctl_lock; | |
1020 | ||
416ac51d AJ |
1021 | /* list of dirty qgroups to be written at next commit */ |
1022 | struct list_head dirty_qgroups; | |
1023 | ||
e69bcee3 | 1024 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 1025 | u64 qgroup_seq; |
21adbd5c | 1026 | |
2f232036 JS |
1027 | /* qgroup rescan items */ |
1028 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1029 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1030 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1031 | struct completion qgroup_rescan_completion; |
b382a324 | 1032 | struct btrfs_work qgroup_rescan_work; |
d2c609b8 | 1033 | bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ |
2f232036 | 1034 | |
acce952b | 1035 | /* filesystem state */ |
87533c47 | 1036 | unsigned long fs_state; |
16cdcec7 MX |
1037 | |
1038 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1039 | |
90519d66 AJ |
1040 | /* readahead tree */ |
1041 | spinlock_t reada_lock; | |
1042 | struct radix_tree_root reada_tree; | |
531f4b1a | 1043 | |
2fefd558 ZL |
1044 | /* readahead works cnt */ |
1045 | atomic_t reada_works_cnt; | |
1046 | ||
f28491e0 JB |
1047 | /* Extent buffer radix tree */ |
1048 | spinlock_t buffer_lock; | |
1049 | struct radix_tree_root buffer_radix; | |
1050 | ||
af31f5e5 CM |
1051 | /* next backup root to be overwritten */ |
1052 | int backup_root_index; | |
5af3e8cc SB |
1053 | |
1054 | int num_tolerated_disk_barrier_failures; | |
e922e087 SB |
1055 | |
1056 | /* device replace state */ | |
1057 | struct btrfs_dev_replace dev_replace; | |
5ac00add SB |
1058 | |
1059 | atomic_t mutually_exclusive_operation_running; | |
803b2f54 | 1060 | |
c404e0dc MX |
1061 | struct percpu_counter bio_counter; |
1062 | wait_queue_head_t replace_wait; | |
1063 | ||
803b2f54 | 1064 | struct semaphore uuid_tree_rescan_sem; |
70f80175 | 1065 | unsigned int update_uuid_tree_gen:1; |
21c7e756 MX |
1066 | |
1067 | /* Used to reclaim the metadata space in the background. */ | |
1068 | struct work_struct async_reclaim_work; | |
47ab2a6c JB |
1069 | |
1070 | spinlock_t unused_bgs_lock; | |
1071 | struct list_head unused_bgs; | |
d4b450cd | 1072 | struct mutex unused_bg_unpin_mutex; |
67c5e7d4 | 1073 | struct mutex delete_unused_bgs_mutex; |
f667aef6 QW |
1074 | |
1075 | /* For btrfs to record security options */ | |
1076 | struct security_mnt_opts security_opts; | |
04216820 FM |
1077 | |
1078 | /* | |
1079 | * Chunks that can't be freed yet (under a trim/discard operation) | |
1080 | * and will be latter freed. Protected by fs_info->chunk_mutex. | |
1081 | */ | |
1082 | struct list_head pinned_chunks; | |
511711af CM |
1083 | |
1084 | int creating_free_space_tree; | |
9e7cc91a WX |
1085 | /* Used to record internally whether fs has been frozen */ |
1086 | int fs_frozen; | |
324ae4df | 1087 | }; |
0b86a832 | 1088 | |
8257b2dc MX |
1089 | struct btrfs_subvolume_writers { |
1090 | struct percpu_counter counter; | |
1091 | wait_queue_head_t wait; | |
1092 | }; | |
1093 | ||
27cdeb70 MX |
1094 | /* |
1095 | * The state of btrfs root | |
1096 | */ | |
1097 | /* | |
1098 | * btrfs_record_root_in_trans is a multi-step process, | |
1099 | * and it can race with the balancing code. But the | |
1100 | * race is very small, and only the first time the root | |
1101 | * is added to each transaction. So IN_TRANS_SETUP | |
1102 | * is used to tell us when more checks are required | |
1103 | */ | |
1104 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 | |
1105 | #define BTRFS_ROOT_REF_COWS 1 | |
1106 | #define BTRFS_ROOT_TRACK_DIRTY 2 | |
1107 | #define BTRFS_ROOT_IN_RADIX 3 | |
f5ee5c9a JM |
1108 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 4 |
1109 | #define BTRFS_ROOT_DEFRAG_RUNNING 5 | |
1110 | #define BTRFS_ROOT_FORCE_COW 6 | |
1111 | #define BTRFS_ROOT_MULTI_LOG_TASKS 7 | |
1112 | #define BTRFS_ROOT_DIRTY 8 | |
27cdeb70 | 1113 | |
9f5fae2f CM |
1114 | /* |
1115 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1116 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1117 | */ |
1118 | struct btrfs_root { | |
5f39d397 | 1119 | struct extent_buffer *node; |
925baedd | 1120 | |
5f39d397 | 1121 | struct extent_buffer *commit_root; |
e02119d5 | 1122 | struct btrfs_root *log_root; |
1a40e23b | 1123 | struct btrfs_root *reloc_root; |
31153d81 | 1124 | |
27cdeb70 | 1125 | unsigned long state; |
62e2749e CM |
1126 | struct btrfs_root_item root_item; |
1127 | struct btrfs_key root_key; | |
9f5fae2f | 1128 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1129 | struct extent_io_tree dirty_log_pages; |
1130 | ||
a2135011 | 1131 | struct mutex objectid_mutex; |
7237f183 | 1132 | |
f0486c68 YZ |
1133 | spinlock_t accounting_lock; |
1134 | struct btrfs_block_rsv *block_rsv; | |
1135 | ||
581bb050 | 1136 | /* free ino cache stuff */ |
581bb050 | 1137 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1138 | enum btrfs_caching_type ino_cache_state; |
1139 | spinlock_t ino_cache_lock; | |
1140 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1141 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1142 | u64 ino_cache_progress; |
1143 | struct inode *ino_cache_inode; | |
581bb050 | 1144 | |
e02119d5 | 1145 | struct mutex log_mutex; |
7237f183 YZ |
1146 | wait_queue_head_t log_writer_wait; |
1147 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1148 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1149 | atomic_t log_writers; |
1150 | atomic_t log_commit[2]; | |
2ecb7923 | 1151 | atomic_t log_batch; |
bb14a59b | 1152 | int log_transid; |
d1433deb MX |
1153 | /* No matter the commit succeeds or not*/ |
1154 | int log_transid_committed; | |
1155 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1156 | int last_log_commit; |
ff782e0a | 1157 | pid_t log_start_pid; |
ea8c2819 | 1158 | |
0f7d52f4 CM |
1159 | u64 objectid; |
1160 | u64 last_trans; | |
5f39d397 CM |
1161 | |
1162 | /* data allocations are done in sectorsize units */ | |
1163 | u32 sectorsize; | |
1164 | ||
1165 | /* node allocations are done in nodesize units */ | |
1166 | u32 nodesize; | |
1167 | ||
87ee04eb CM |
1168 | u32 stripesize; |
1169 | ||
9f5fae2f | 1170 | u32 type; |
13a8a7c8 YZ |
1171 | |
1172 | u64 highest_objectid; | |
7585717f | 1173 | |
05653ef3 | 1174 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
0d4cf4e6 | 1175 | /* only used with CONFIG_BTRFS_FS_RUN_SANITY_TESTS is enabled */ |
faa2dbf0 | 1176 | u64 alloc_bytenr; |
05653ef3 | 1177 | #endif |
faa2dbf0 | 1178 | |
3f157a2f | 1179 | u64 defrag_trans_start; |
6702ed49 | 1180 | struct btrfs_key defrag_progress; |
0ef3e66b | 1181 | struct btrfs_key defrag_max; |
58176a96 | 1182 | char *name; |
0b86a832 CM |
1183 | |
1184 | /* the dirty list is only used by non-reference counted roots */ | |
1185 | struct list_head dirty_list; | |
7b128766 | 1186 | |
5d4f98a2 YZ |
1187 | struct list_head root_list; |
1188 | ||
2ab28f32 JB |
1189 | spinlock_t log_extents_lock[2]; |
1190 | struct list_head logged_list[2]; | |
1191 | ||
d68fc57b | 1192 | spinlock_t orphan_lock; |
8a35d95f | 1193 | atomic_t orphan_inodes; |
d68fc57b | 1194 | struct btrfs_block_rsv *orphan_block_rsv; |
d68fc57b | 1195 | int orphan_cleanup_state; |
3394e160 | 1196 | |
5d4f98a2 YZ |
1197 | spinlock_t inode_lock; |
1198 | /* red-black tree that keeps track of in-memory inodes */ | |
1199 | struct rb_root inode_tree; | |
1200 | ||
16cdcec7 MX |
1201 | /* |
1202 | * radix tree that keeps track of delayed nodes of every inode, | |
1203 | * protected by inode_lock | |
1204 | */ | |
1205 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1206 | /* |
1207 | * right now this just gets used so that a root has its own devid | |
1208 | * for stat. It may be used for more later | |
1209 | */ | |
0ee5dc67 | 1210 | dev_t anon_dev; |
f1ebcc74 | 1211 | |
5f3ab90a | 1212 | spinlock_t root_item_lock; |
b0feb9d9 | 1213 | atomic_t refs; |
eb73c1b7 | 1214 | |
573bfb72 | 1215 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1216 | spinlock_t delalloc_lock; |
1217 | /* | |
1218 | * all of the inodes that have delalloc bytes. It is possible for | |
1219 | * this list to be empty even when there is still dirty data=ordered | |
1220 | * extents waiting to finish IO. | |
1221 | */ | |
1222 | struct list_head delalloc_inodes; | |
1223 | struct list_head delalloc_root; | |
1224 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1225 | |
1226 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1227 | /* |
1228 | * this is used by the balancing code to wait for all the pending | |
1229 | * ordered extents | |
1230 | */ | |
1231 | spinlock_t ordered_extent_lock; | |
1232 | ||
1233 | /* | |
1234 | * all of the data=ordered extents pending writeback | |
1235 | * these can span multiple transactions and basically include | |
1236 | * every dirty data page that isn't from nodatacow | |
1237 | */ | |
1238 | struct list_head ordered_extents; | |
1239 | struct list_head ordered_root; | |
1240 | u64 nr_ordered_extents; | |
2c686537 DS |
1241 | |
1242 | /* | |
1243 | * Number of currently running SEND ioctls to prevent | |
1244 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1245 | */ | |
1246 | int send_in_progress; | |
8257b2dc MX |
1247 | struct btrfs_subvolume_writers *subv_writers; |
1248 | atomic_t will_be_snapshoted; | |
55eeaf05 QW |
1249 | |
1250 | /* For qgroup metadata space reserve */ | |
1251 | atomic_t qgroup_meta_rsv; | |
62e2749e CM |
1252 | }; |
1253 | ||
1db1ff92 JM |
1254 | static inline u32 __BTRFS_LEAF_DATA_SIZE(u32 blocksize) |
1255 | { | |
1256 | return blocksize - sizeof(struct btrfs_header); | |
1257 | } | |
1258 | ||
1259 | static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_root *root) | |
1260 | { | |
1261 | return __BTRFS_LEAF_DATA_SIZE(root->nodesize); | |
1262 | } | |
1263 | ||
1264 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_root *root) | |
1265 | { | |
1266 | return BTRFS_LEAF_DATA_SIZE(root) - sizeof(struct btrfs_item); | |
1267 | } | |
1268 | ||
1269 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_root *root) | |
1270 | { | |
1271 | return BTRFS_LEAF_DATA_SIZE(root) / sizeof(struct btrfs_key_ptr); | |
1272 | } | |
1273 | ||
1274 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ | |
1275 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
1276 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_root *root) | |
1277 | { | |
1278 | return BTRFS_MAX_ITEM_SIZE(root) - | |
1279 | BTRFS_FILE_EXTENT_INLINE_DATA_START; | |
1280 | } | |
1281 | ||
1282 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_root *root) | |
1283 | { | |
1284 | return BTRFS_MAX_ITEM_SIZE(root) - sizeof(struct btrfs_dir_item); | |
1285 | } | |
1286 | ||
0942caa3 DS |
1287 | /* |
1288 | * Flags for mount options. | |
1289 | * | |
1290 | * Note: don't forget to add new options to btrfs_show_options() | |
1291 | */ | |
21ad10cf CM |
1292 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1293 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1294 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1295 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1296 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1297 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1298 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1299 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1300 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1301 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1302 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1303 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1304 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1305 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1306 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1307 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1308 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1309 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
8dcddfa0 | 1310 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
9555c6c1 | 1311 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1312 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1313 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1314 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 1315 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
d0bd4560 JB |
1316 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
1317 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) | |
f7d3d2f9 | 1318 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
96da0919 | 1319 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
b6cda9bc | 1320 | |
8b87dc17 | 1321 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1322 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1323 | |
b6cda9bc CM |
1324 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1325 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1326 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
3cdde224 | 1327 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
b6cda9bc | 1328 | BTRFS_MOUNT_##opt) |
572d9ab7 | 1329 | |
3cdde224 | 1330 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1331 | { \ |
3cdde224 JM |
1332 | if (!btrfs_test_opt(fs_info, opt)) \ |
1333 | btrfs_info(fs_info, fmt, ##args); \ | |
1334 | btrfs_set_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1335 | } |
1336 | ||
3cdde224 | 1337 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1338 | { \ |
3cdde224 JM |
1339 | if (btrfs_test_opt(fs_info, opt)) \ |
1340 | btrfs_info(fs_info, fmt, ##args); \ | |
1341 | btrfs_clear_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1342 | } |
1343 | ||
d0bd4560 JB |
1344 | #ifdef CONFIG_BTRFS_DEBUG |
1345 | static inline int | |
1346 | btrfs_should_fragment_free_space(struct btrfs_root *root, | |
1347 | struct btrfs_block_group_cache *block_group) | |
1348 | { | |
3cdde224 | 1349 | return (btrfs_test_opt(root->fs_info, FRAGMENT_METADATA) && |
d0bd4560 | 1350 | block_group->flags & BTRFS_BLOCK_GROUP_METADATA) || |
3cdde224 | 1351 | (btrfs_test_opt(root->fs_info, FRAGMENT_DATA) && |
d0bd4560 JB |
1352 | block_group->flags & BTRFS_BLOCK_GROUP_DATA); |
1353 | } | |
1354 | #endif | |
1355 | ||
572d9ab7 DS |
1356 | /* |
1357 | * Requests for changes that need to be done during transaction commit. | |
1358 | * | |
1359 | * Internal mount options that are used for special handling of the real | |
1360 | * mount options (eg. cannot be set during remount and have to be set during | |
1361 | * transaction commit) | |
1362 | */ | |
1363 | ||
7e1876ac DS |
1364 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
1365 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) | |
d51033d0 | 1366 | #define BTRFS_PENDING_COMMIT (2) |
7e1876ac | 1367 | |
572d9ab7 DS |
1368 | #define btrfs_test_pending(info, opt) \ |
1369 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1370 | #define btrfs_set_pending(info, opt) \ | |
1371 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1372 | #define btrfs_clear_pending(info, opt) \ | |
1373 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1374 | ||
1375 | /* | |
1376 | * Helpers for setting pending mount option changes. | |
1377 | * | |
1378 | * Expects corresponding macros | |
1379 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1380 | */ | |
1381 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1382 | do { \ | |
1383 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1384 | btrfs_info((info), fmt, ##args); \ | |
1385 | btrfs_set_pending((info), SET_##opt); \ | |
1386 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1387 | } \ | |
1388 | } while(0) | |
1389 | ||
1390 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1391 | do { \ | |
1392 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1393 | btrfs_info((info), fmt, ##args); \ | |
1394 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1395 | btrfs_clear_pending((info), SET_##opt); \ | |
1396 | } \ | |
1397 | } while(0) | |
1398 | ||
b98b6767 Y |
1399 | /* |
1400 | * Inode flags | |
1401 | */ | |
fdebe2bd Y |
1402 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1403 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1404 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1405 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1406 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1407 | #define BTRFS_INODE_SYNC (1 << 5) |
1408 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1409 | #define BTRFS_INODE_APPEND (1 << 7) | |
1410 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1411 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1412 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1413 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1414 | |
08fe4db1 LZ |
1415 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1416 | ||
cfed81a0 CM |
1417 | struct btrfs_map_token { |
1418 | struct extent_buffer *eb; | |
1419 | char *kaddr; | |
1420 | unsigned long offset; | |
1421 | }; | |
1422 | ||
2e78c927 CR |
1423 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
1424 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) | |
1425 | ||
cfed81a0 CM |
1426 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
1427 | { | |
ad914559 | 1428 | token->kaddr = NULL; |
cfed81a0 CM |
1429 | } |
1430 | ||
01327610 | 1431 | /* some macros to generate set/get functions for the struct fields. This |
5f39d397 CM |
1432 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
1433 | * one for u8: | |
1434 | */ | |
1435 | #define le8_to_cpu(v) (v) | |
1436 | #define cpu_to_le8(v) (v) | |
1437 | #define __le8 u8 | |
1438 | ||
1439 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1440 | read_extent_buffer(eb, (char *)(result), \ | |
1441 | ((unsigned long)(ptr)) + \ | |
1442 | offsetof(type, member), \ | |
1443 | sizeof(((type *)0)->member))) | |
1444 | ||
1445 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1446 | write_extent_buffer(eb, (char *)(result), \ | |
1447 | ((unsigned long)(ptr)) + \ | |
1448 | offsetof(type, member), \ | |
1449 | sizeof(((type *)0)->member))) | |
1450 | ||
18077bb4 LZ |
1451 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1452 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1453 | unsigned long off, \ | |
1454 | struct btrfs_map_token *token); \ | |
1455 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1456 | unsigned long off, u##bits val, \ | |
1457 | struct btrfs_map_token *token); \ | |
1458 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ | |
1459 | unsigned long off) \ | |
1460 | { \ | |
1461 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1462 | } \ | |
1463 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ | |
1464 | unsigned long off, u##bits val) \ | |
1465 | { \ | |
1466 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1467 | } | |
1468 | ||
1469 | DECLARE_BTRFS_SETGET_BITS(8) | |
1470 | DECLARE_BTRFS_SETGET_BITS(16) | |
1471 | DECLARE_BTRFS_SETGET_BITS(32) | |
1472 | DECLARE_BTRFS_SETGET_BITS(64) | |
1473 | ||
5f39d397 | 1474 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
18077bb4 LZ |
1475 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
1476 | { \ | |
1477 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1478 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1479 | } \ | |
1480 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1481 | u##bits val) \ | |
1482 | { \ | |
1483 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1484 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1485 | } \ | |
1486 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ | |
1487 | struct btrfs_map_token *token) \ | |
1488 | { \ | |
1489 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1490 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1491 | } \ | |
1492 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
1493 | type *s, u##bits val, \ | |
1494 | struct btrfs_map_token *token) \ | |
1495 | { \ | |
1496 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1497 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
1498 | } | |
5f39d397 CM |
1499 | |
1500 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1501 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1502 | { \ | |
727011e0 | 1503 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1504 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1505 | return res; \ |
5f39d397 CM |
1506 | } \ |
1507 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1508 | u##bits val) \ | |
1509 | { \ | |
727011e0 | 1510 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1511 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1512 | } |
9078a3e1 | 1513 | |
5f39d397 CM |
1514 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1515 | static inline u##bits btrfs_##name(type *s) \ | |
1516 | { \ | |
1517 | return le##bits##_to_cpu(s->member); \ | |
1518 | } \ | |
1519 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1520 | { \ | |
1521 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1522 | } |
1523 | ||
0b86a832 CM |
1524 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1525 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1526 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1527 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1528 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1529 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1530 | start_offset, 64); | |
0b86a832 CM |
1531 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1532 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1533 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1534 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1535 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1536 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1537 | |
8a4b83cc CM |
1538 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1539 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1540 | total_bytes, 64); | |
1541 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1542 | bytes_used, 64); | |
1543 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1544 | io_align, 32); | |
1545 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1546 | io_width, 32); | |
1547 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1548 | sector_size, 32); | |
1549 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1550 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1551 | dev_group, 32); | |
1552 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1553 | seek_speed, 8); | |
1554 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1555 | bandwidth, 8); | |
2b82032c YZ |
1556 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1557 | generation, 64); | |
8a4b83cc | 1558 | |
410ba3a2 | 1559 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1560 | { |
410ba3a2 | 1561 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1562 | } |
1563 | ||
1473b24e | 1564 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1565 | { |
1473b24e | 1566 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1567 | } |
1568 | ||
e17cade2 | 1569 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1570 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1571 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1572 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1573 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1574 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1575 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1576 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1577 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1578 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1579 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1580 | ||
e17cade2 CM |
1581 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1582 | { | |
1583 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1584 | } | |
1585 | ||
1586 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1587 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1588 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1589 | stripe_len, 64); | |
1590 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1591 | io_align, 32); | |
1592 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1593 | io_width, 32); | |
1594 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1595 | sector_size, 32); | |
1596 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1597 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1598 | num_stripes, 16); | |
321aecc6 CM |
1599 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1600 | sub_stripes, 16); | |
0b86a832 CM |
1601 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1602 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1603 | ||
1604 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1605 | int nr) | |
1606 | { | |
1607 | unsigned long offset = (unsigned long)c; | |
1608 | offset += offsetof(struct btrfs_chunk, stripe); | |
1609 | offset += nr * sizeof(struct btrfs_stripe); | |
1610 | return (struct btrfs_stripe *)offset; | |
1611 | } | |
1612 | ||
a443755f CM |
1613 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1614 | { | |
1615 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1616 | } | |
1617 | ||
0b86a832 CM |
1618 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1619 | struct btrfs_chunk *c, int nr) | |
1620 | { | |
1621 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1622 | } | |
1623 | ||
0b86a832 CM |
1624 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1625 | struct btrfs_chunk *c, int nr) | |
1626 | { | |
1627 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1628 | } | |
1629 | ||
5f39d397 CM |
1630 | /* struct btrfs_block_group_item */ |
1631 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1632 | used, 64); | |
1633 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1634 | used, 64); | |
0b86a832 CM |
1635 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1636 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1637 | |
1638 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1639 | struct btrfs_block_group_item, chunk_objectid, 64); |
1640 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1641 | struct btrfs_block_group_item, flags, 64); | |
1642 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1643 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1644 | |
208acb8c OS |
1645 | /* struct btrfs_free_space_info */ |
1646 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1647 | extent_count, 32); | |
1648 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1649 | ||
3954401f CM |
1650 | /* struct btrfs_inode_ref */ |
1651 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1652 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1653 | |
f186373f MF |
1654 | /* struct btrfs_inode_extref */ |
1655 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1656 | parent_objectid, 64); | |
1657 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1658 | name_len, 16); | |
1659 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1660 | ||
5f39d397 CM |
1661 | /* struct btrfs_inode_item */ |
1662 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1663 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1664 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1665 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1666 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1667 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1668 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1669 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1670 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1671 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1672 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1673 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1674 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1675 | generation, 64); | |
1676 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1677 | sequence, 64); | |
1678 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1679 | transid, 64); | |
1680 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1681 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1682 | nbytes, 64); | |
1683 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1684 | block_group, 64); | |
1685 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1686 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1687 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1688 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1689 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1690 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1691 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1692 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1693 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1694 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1695 | |
0b86a832 | 1696 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1697 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1698 | chunk_tree, 64); | |
1699 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1700 | chunk_objectid, 64); | |
1701 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1702 | chunk_offset, 64); | |
0b86a832 CM |
1703 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1704 | ||
231e88f4 | 1705 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
1706 | { |
1707 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 1708 | return (unsigned long)dev + ptr; |
e17cade2 CM |
1709 | } |
1710 | ||
5d4f98a2 YZ |
1711 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1712 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1713 | generation, 64); | |
1714 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1715 | |
5d4f98a2 YZ |
1716 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1717 | ||
1718 | ||
1719 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1720 | ||
1721 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1722 | struct btrfs_tree_block_info *item, | |
1723 | struct btrfs_disk_key *key) | |
1724 | { | |
1725 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1726 | } | |
1727 | ||
1728 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1729 | struct btrfs_tree_block_info *item, | |
1730 | struct btrfs_disk_key *key) | |
1731 | { | |
1732 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1733 | } | |
e20d96d6 | 1734 | |
5d4f98a2 YZ |
1735 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1736 | root, 64); | |
1737 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1738 | objectid, 64); | |
1739 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1740 | offset, 64); | |
1741 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1742 | count, 32); | |
1743 | ||
1744 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1745 | count, 32); | |
1746 | ||
1747 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1748 | type, 8); | |
1749 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1750 | offset, 64); | |
1751 | ||
1752 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1753 | { | |
1754 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1755 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1756 | return sizeof(struct btrfs_extent_inline_ref); | |
1757 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1758 | return sizeof(struct btrfs_shared_data_ref) + | |
1759 | sizeof(struct btrfs_extent_inline_ref); | |
1760 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1761 | return sizeof(struct btrfs_extent_data_ref) + | |
1762 | offsetof(struct btrfs_extent_inline_ref, offset); | |
1763 | BUG(); | |
1764 | return 0; | |
1765 | } | |
1766 | ||
1767 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1768 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1769 | generation, 64); | |
1770 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1771 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1772 | |
5f39d397 CM |
1773 | /* struct btrfs_node */ |
1774 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1775 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
1776 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
1777 | blockptr, 64); | |
1778 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
1779 | generation, 64); | |
e20d96d6 | 1780 | |
5f39d397 | 1781 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1782 | { |
5f39d397 CM |
1783 | unsigned long ptr; |
1784 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1785 | sizeof(struct btrfs_key_ptr) * nr; | |
1786 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1787 | } |
1788 | ||
5f39d397 CM |
1789 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1790 | int nr, u64 val) | |
cf27e1ee | 1791 | { |
5f39d397 CM |
1792 | unsigned long ptr; |
1793 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1794 | sizeof(struct btrfs_key_ptr) * nr; | |
1795 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1796 | } |
1797 | ||
74493f7a CM |
1798 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1799 | { | |
1800 | unsigned long ptr; | |
1801 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1802 | sizeof(struct btrfs_key_ptr) * nr; | |
1803 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1804 | } | |
1805 | ||
1806 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1807 | int nr, u64 val) | |
1808 | { | |
1809 | unsigned long ptr; | |
1810 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1811 | sizeof(struct btrfs_key_ptr) * nr; | |
1812 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1813 | } | |
1814 | ||
810191ff | 1815 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1816 | { |
5f39d397 CM |
1817 | return offsetof(struct btrfs_node, ptrs) + |
1818 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1819 | } |
1820 | ||
e644d021 CM |
1821 | void btrfs_node_key(struct extent_buffer *eb, |
1822 | struct btrfs_disk_key *disk_key, int nr); | |
1823 | ||
5f39d397 CM |
1824 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1825 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1826 | { |
5f39d397 CM |
1827 | unsigned long ptr; |
1828 | ptr = btrfs_node_key_ptr_offset(nr); | |
1829 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1830 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1831 | } |
1832 | ||
5f39d397 CM |
1833 | /* struct btrfs_item */ |
1834 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1835 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
1836 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
1837 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 1838 | |
5f39d397 | 1839 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1840 | { |
5f39d397 CM |
1841 | return offsetof(struct btrfs_leaf, items) + |
1842 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1843 | } |
1844 | ||
dd3cc16b | 1845 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 1846 | { |
5f39d397 | 1847 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1848 | } |
1849 | ||
5f39d397 CM |
1850 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1851 | struct btrfs_item *item) | |
0783fcfc | 1852 | { |
5f39d397 | 1853 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1854 | } |
1855 | ||
5f39d397 | 1856 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1857 | { |
dd3cc16b | 1858 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1859 | } |
1860 | ||
5f39d397 | 1861 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1862 | { |
dd3cc16b | 1863 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1864 | } |
1865 | ||
5f39d397 | 1866 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1867 | { |
dd3cc16b | 1868 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1869 | } |
1870 | ||
5f39d397 CM |
1871 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1872 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1873 | { |
dd3cc16b | 1874 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1875 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1876 | } |
1877 | ||
5f39d397 CM |
1878 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1879 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1880 | { |
dd3cc16b | 1881 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1882 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1883 | } |
1884 | ||
e02119d5 CM |
1885 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1886 | ||
0660b5af CM |
1887 | /* |
1888 | * struct btrfs_root_ref | |
1889 | */ | |
1890 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1891 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1892 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1893 | ||
5f39d397 | 1894 | /* struct btrfs_dir_item */ |
5103e947 | 1895 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1896 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1897 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1898 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
1899 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
1900 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
1901 | data_len, 16); | |
1902 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
1903 | name_len, 16); | |
1904 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
1905 | transid, 64); | |
1d4f6404 | 1906 | |
5f39d397 CM |
1907 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1908 | struct btrfs_dir_item *item, | |
1909 | struct btrfs_disk_key *key) | |
1d4f6404 | 1910 | { |
5f39d397 | 1911 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1912 | } |
1913 | ||
5f39d397 CM |
1914 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1915 | struct btrfs_dir_item *item, | |
1916 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1917 | { |
5f39d397 | 1918 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1919 | } |
1920 | ||
0af3d00b JB |
1921 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1922 | num_entries, 64); | |
1923 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1924 | num_bitmaps, 64); | |
1925 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1926 | generation, 64); | |
1927 | ||
1928 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
1929 | struct btrfs_free_space_header *h, | |
1930 | struct btrfs_disk_key *key) | |
1931 | { | |
1932 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1933 | } | |
1934 | ||
1935 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1936 | struct btrfs_free_space_header *h, | |
1937 | struct btrfs_disk_key *key) | |
1938 | { | |
1939 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1940 | } | |
1941 | ||
5f39d397 CM |
1942 | /* struct btrfs_disk_key */ |
1943 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1944 | objectid, 64); | |
1945 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1946 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1947 | |
e2fa7227 CM |
1948 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1949 | struct btrfs_disk_key *disk) | |
1950 | { | |
1951 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1952 | cpu->type = disk->type; |
e2fa7227 CM |
1953 | cpu->objectid = le64_to_cpu(disk->objectid); |
1954 | } | |
1955 | ||
1956 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1957 | struct btrfs_key *cpu) | |
1958 | { | |
1959 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1960 | disk->type = cpu->type; |
e2fa7227 CM |
1961 | disk->objectid = cpu_to_le64(cpu->objectid); |
1962 | } | |
1963 | ||
5f39d397 CM |
1964 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1965 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1966 | { |
5f39d397 CM |
1967 | struct btrfs_disk_key disk_key; |
1968 | btrfs_node_key(eb, &disk_key, nr); | |
1969 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1970 | } |
1971 | ||
5f39d397 CM |
1972 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1973 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1974 | { |
5f39d397 CM |
1975 | struct btrfs_disk_key disk_key; |
1976 | btrfs_item_key(eb, &disk_key, nr); | |
1977 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1978 | } |
1979 | ||
5f39d397 CM |
1980 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1981 | struct btrfs_dir_item *item, | |
1982 | struct btrfs_key *key) | |
4d775673 | 1983 | { |
5f39d397 CM |
1984 | struct btrfs_disk_key disk_key; |
1985 | btrfs_dir_item_key(eb, item, &disk_key); | |
1986 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1987 | } |
1988 | ||
58176a96 | 1989 | |
5f39d397 | 1990 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1991 | { |
5f39d397 | 1992 | return key->type; |
3768f368 CM |
1993 | } |
1994 | ||
5f39d397 | 1995 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1996 | { |
5f39d397 | 1997 | key->type = val; |
3768f368 CM |
1998 | } |
1999 | ||
5f39d397 | 2000 | /* struct btrfs_header */ |
db94535d | 2001 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2002 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2003 | generation, 64); | |
2004 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2005 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2006 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2007 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2008 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2009 | generation, 64); | |
2010 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2011 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2012 | nritems, 32); | |
2013 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2014 | |
63b10fc4 CM |
2015 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
2016 | { | |
2017 | return (btrfs_header_flags(eb) & flag) == flag; | |
2018 | } | |
2019 | ||
2020 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2021 | { | |
2022 | u64 flags = btrfs_header_flags(eb); | |
2023 | btrfs_set_header_flags(eb, flags | flag); | |
2024 | return (flags & flag) == flag; | |
2025 | } | |
2026 | ||
2027 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2028 | { | |
2029 | u64 flags = btrfs_header_flags(eb); | |
2030 | btrfs_set_header_flags(eb, flags & ~flag); | |
2031 | return (flags & flag) == flag; | |
2032 | } | |
2033 | ||
5d4f98a2 YZ |
2034 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2035 | { | |
2036 | u64 flags = btrfs_header_flags(eb); | |
2037 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2038 | } | |
2039 | ||
2040 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2041 | int rev) | |
2042 | { | |
2043 | u64 flags = btrfs_header_flags(eb); | |
2044 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2045 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2046 | btrfs_set_header_flags(eb, flags); | |
2047 | } | |
2048 | ||
0a4e5586 | 2049 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2050 | { |
fba6aa75 | 2051 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2052 | } |
2053 | ||
b308bc2f | 2054 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
e17cade2 | 2055 | { |
b308bc2f | 2056 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2057 | } |
2058 | ||
5f39d397 | 2059 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2060 | { |
d397712b | 2061 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2062 | } |
2063 | ||
5f39d397 | 2064 | /* struct btrfs_root_item */ |
84234f3a YZ |
2065 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2066 | generation, 64); | |
5f39d397 | 2067 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2068 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2069 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2070 | |
84234f3a YZ |
2071 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2072 | generation, 64); | |
db94535d CM |
2073 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2074 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2075 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2076 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2077 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2078 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2079 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2080 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2081 | last_snapshot, 64); | |
8ea05e3a AB |
2082 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2083 | generation_v2, 64); | |
2084 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2085 | ctransid, 64); | |
2086 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2087 | otransid, 64); | |
2088 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2089 | stransid, 64); | |
2090 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2091 | rtransid, 64); | |
123abc88 | 2092 | |
b83cc969 LZ |
2093 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2094 | { | |
6ed3cf2c | 2095 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2096 | } |
2097 | ||
521e0546 DS |
2098 | static inline bool btrfs_root_dead(struct btrfs_root *root) |
2099 | { | |
2100 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2101 | } | |
2102 | ||
af31f5e5 CM |
2103 | /* struct btrfs_root_backup */ |
2104 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2105 | tree_root, 64); | |
2106 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2107 | tree_root_gen, 64); | |
2108 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2109 | tree_root_level, 8); | |
2110 | ||
2111 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2112 | chunk_root, 64); | |
2113 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2114 | chunk_root_gen, 64); | |
2115 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2116 | chunk_root_level, 8); | |
2117 | ||
2118 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2119 | extent_root, 64); | |
2120 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2121 | extent_root_gen, 64); | |
2122 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2123 | extent_root_level, 8); | |
2124 | ||
2125 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2126 | fs_root, 64); | |
2127 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2128 | fs_root_gen, 64); | |
2129 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2130 | fs_root_level, 8); | |
2131 | ||
2132 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2133 | dev_root, 64); | |
2134 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2135 | dev_root_gen, 64); | |
2136 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2137 | dev_root_level, 8); | |
2138 | ||
2139 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2140 | csum_root, 64); | |
2141 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2142 | csum_root_gen, 64); | |
2143 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2144 | csum_root_level, 8); | |
2145 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2146 | total_bytes, 64); | |
2147 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2148 | bytes_used, 64); | |
2149 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2150 | num_devices, 64); | |
2151 | ||
0940ebf6 ID |
2152 | /* struct btrfs_balance_item */ |
2153 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2154 | |
0940ebf6 ID |
2155 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2156 | struct btrfs_balance_item *bi, | |
2157 | struct btrfs_disk_balance_args *ba) | |
2158 | { | |
2159 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2160 | } | |
2161 | ||
2162 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2163 | struct btrfs_balance_item *bi, | |
2164 | struct btrfs_disk_balance_args *ba) | |
2165 | { | |
2166 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2167 | } | |
2168 | ||
2169 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2170 | struct btrfs_balance_item *bi, | |
2171 | struct btrfs_disk_balance_args *ba) | |
2172 | { | |
2173 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2174 | } | |
2175 | ||
2176 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2177 | struct btrfs_balance_item *bi, | |
2178 | struct btrfs_disk_balance_args *ba) | |
2179 | { | |
2180 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2181 | } | |
2182 | ||
2183 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2184 | struct btrfs_balance_item *bi, | |
2185 | struct btrfs_disk_balance_args *ba) | |
2186 | { | |
2187 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2188 | } | |
2189 | ||
2190 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2191 | struct btrfs_balance_item *bi, | |
2192 | struct btrfs_disk_balance_args *ba) | |
2193 | { | |
2194 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2195 | } | |
2196 | ||
2197 | static inline void | |
2198 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2199 | struct btrfs_disk_balance_args *disk) | |
2200 | { | |
2201 | memset(cpu, 0, sizeof(*cpu)); | |
2202 | ||
2203 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2204 | cpu->usage = le64_to_cpu(disk->usage); | |
2205 | cpu->devid = le64_to_cpu(disk->devid); | |
2206 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2207 | cpu->pend = le64_to_cpu(disk->pend); | |
2208 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2209 | cpu->vend = le64_to_cpu(disk->vend); | |
2210 | cpu->target = le64_to_cpu(disk->target); | |
2211 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2212 | cpu->limit = le64_to_cpu(disk->limit); |
0940ebf6 ID |
2213 | } |
2214 | ||
2215 | static inline void | |
2216 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2217 | struct btrfs_balance_args *cpu) | |
2218 | { | |
2219 | memset(disk, 0, sizeof(*disk)); | |
2220 | ||
2221 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2222 | disk->usage = cpu_to_le64(cpu->usage); | |
2223 | disk->devid = cpu_to_le64(cpu->devid); | |
2224 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2225 | disk->pend = cpu_to_le64(cpu->pend); | |
2226 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2227 | disk->vend = cpu_to_le64(cpu->vend); | |
2228 | disk->target = cpu_to_le64(cpu->target); | |
2229 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2230 | disk->limit = cpu_to_le64(cpu->limit); |
0940ebf6 ID |
2231 | } |
2232 | ||
2233 | /* struct btrfs_super_block */ | |
db94535d | 2234 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2235 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2236 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2237 | generation, 64); | |
2238 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2239 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2240 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2241 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2242 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2243 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2244 | root_level, 8); | |
0b86a832 CM |
2245 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2246 | chunk_root, 64); | |
2247 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2248 | chunk_root_level, 8); |
2249 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2250 | log_root, 64); | |
c3027eb5 CM |
2251 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2252 | log_root_transid, 64); | |
e02119d5 CM |
2253 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2254 | log_root_level, 8); | |
db94535d CM |
2255 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2256 | total_bytes, 64); | |
2257 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2258 | bytes_used, 64); | |
5f39d397 CM |
2259 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2260 | sectorsize, 32); | |
2261 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2262 | nodesize, 32); | |
87ee04eb CM |
2263 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2264 | stripesize, 32); | |
5f39d397 CM |
2265 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2266 | root_dir_objectid, 64); | |
8a4b83cc CM |
2267 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2268 | num_devices, 64); | |
f2b636e8 JB |
2269 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2270 | compat_flags, 64); | |
2271 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2272 | compat_ro_flags, 64); |
f2b636e8 JB |
2273 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2274 | incompat_flags, 64); | |
607d432d JB |
2275 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2276 | csum_type, 16); | |
0af3d00b JB |
2277 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2278 | cache_generation, 64); | |
3cae210f | 2279 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2280 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2281 | uuid_tree_generation, 64); | |
607d432d JB |
2282 | |
2283 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2284 | { | |
1104a885 DS |
2285 | u16 t = btrfs_super_csum_type(s); |
2286 | /* | |
2287 | * csum type is validated at mount time | |
2288 | */ | |
607d432d JB |
2289 | return btrfs_csum_sizes[t]; |
2290 | } | |
2e635a27 | 2291 | |
5f39d397 | 2292 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2293 | { |
5f39d397 | 2294 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2295 | } |
2296 | ||
5f39d397 CM |
2297 | /* struct btrfs_file_extent_item */ |
2298 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2299 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2300 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2301 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2302 | struct btrfs_file_extent_item, offset, 64); | |
2303 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2304 | struct btrfs_file_extent_item, generation, 64); | |
2305 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2306 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2307 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2308 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2309 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2310 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2311 | |
d397712b CM |
2312 | static inline unsigned long |
2313 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2314 | { |
7ec20afb | 2315 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2316 | } |
2317 | ||
2318 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2319 | { | |
7ec20afb | 2320 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2321 | } |
2322 | ||
db94535d CM |
2323 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2324 | disk_bytenr, 64); | |
5f39d397 CM |
2325 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2326 | generation, 64); | |
db94535d CM |
2327 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2328 | disk_num_bytes, 64); | |
5f39d397 CM |
2329 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2330 | offset, 64); | |
db94535d CM |
2331 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2332 | num_bytes, 64); | |
c8b97818 CM |
2333 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2334 | ram_bytes, 64); | |
2335 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2336 | compression, 8); | |
2337 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2338 | encryption, 8); | |
2339 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2340 | other_encoding, 16); | |
2341 | ||
c8b97818 CM |
2342 | /* |
2343 | * this returns the number of bytes used by the item on disk, minus the | |
2344 | * size of any extent headers. If a file is compressed on disk, this is | |
2345 | * the compressed size | |
2346 | */ | |
2347 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2348 | struct btrfs_item *e) | |
2349 | { | |
7ec20afb | 2350 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2351 | } |
9f5fae2f | 2352 | |
514ac8ad CM |
2353 | /* this returns the number of file bytes represented by the inline item. |
2354 | * If an item is compressed, this is the uncompressed size | |
2355 | */ | |
2356 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2357 | int slot, | |
2358 | struct btrfs_file_extent_item *fi) | |
2359 | { | |
2360 | struct btrfs_map_token token; | |
2361 | ||
2362 | btrfs_init_map_token(&token); | |
2363 | /* | |
2364 | * return the space used on disk if this item isn't | |
2365 | * compressed or encoded | |
2366 | */ | |
2367 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && | |
2368 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && | |
2369 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { | |
2370 | return btrfs_file_extent_inline_item_len(eb, | |
2371 | btrfs_item_nr(slot)); | |
2372 | } | |
2373 | ||
2374 | /* otherwise use the ram bytes field */ | |
2375 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); | |
2376 | } | |
2377 | ||
2378 | ||
733f4fbb SB |
2379 | /* btrfs_dev_stats_item */ |
2380 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
2381 | struct btrfs_dev_stats_item *ptr, | |
2382 | int index) | |
2383 | { | |
2384 | u64 val; | |
2385 | ||
2386 | read_extent_buffer(eb, &val, | |
2387 | offsetof(struct btrfs_dev_stats_item, values) + | |
2388 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2389 | sizeof(val)); | |
2390 | return val; | |
2391 | } | |
2392 | ||
2393 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2394 | struct btrfs_dev_stats_item *ptr, | |
2395 | int index, u64 val) | |
2396 | { | |
2397 | write_extent_buffer(eb, &val, | |
2398 | offsetof(struct btrfs_dev_stats_item, values) + | |
2399 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2400 | sizeof(val)); | |
2401 | } | |
2402 | ||
630dc772 AJ |
2403 | /* btrfs_qgroup_status_item */ |
2404 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2405 | generation, 64); | |
2406 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2407 | version, 64); | |
2408 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2409 | flags, 64); | |
2f232036 JS |
2410 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2411 | rescan, 64); | |
630dc772 AJ |
2412 | |
2413 | /* btrfs_qgroup_info_item */ | |
2414 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2415 | generation, 64); | |
2416 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2417 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2418 | rfer_cmpr, 64); | |
2419 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2420 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2421 | excl_cmpr, 64); | |
2422 | ||
2423 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2424 | struct btrfs_qgroup_info_item, generation, 64); | |
2425 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2426 | rfer, 64); | |
2427 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2428 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2429 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2430 | excl, 64); | |
2431 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2432 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2433 | ||
2434 | /* btrfs_qgroup_limit_item */ | |
2435 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2436 | flags, 64); | |
2437 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2438 | max_rfer, 64); | |
2439 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2440 | max_excl, 64); | |
2441 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2442 | rsv_rfer, 64); | |
2443 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2444 | rsv_excl, 64); | |
2445 | ||
a2bff640 SB |
2446 | /* btrfs_dev_replace_item */ |
2447 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2448 | struct btrfs_dev_replace_item, src_devid, 64); | |
2449 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2450 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2451 | 64); | |
2452 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2453 | replace_state, 64); | |
2454 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2455 | time_started, 64); | |
2456 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2457 | time_stopped, 64); | |
2458 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2459 | num_write_errors, 64); | |
2460 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2461 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2462 | 64); | |
2463 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2464 | cursor_left, 64); | |
2465 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2466 | cursor_right, 64); | |
2467 | ||
2468 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2469 | struct btrfs_dev_replace_item, src_devid, 64); | |
2470 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2471 | struct btrfs_dev_replace_item, | |
2472 | cont_reading_from_srcdev_mode, 64); | |
2473 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2474 | struct btrfs_dev_replace_item, replace_state, 64); | |
2475 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2476 | struct btrfs_dev_replace_item, time_started, 64); | |
2477 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2478 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2479 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2480 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2481 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2482 | struct btrfs_dev_replace_item, | |
2483 | num_uncorrectable_read_errors, 64); | |
2484 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2485 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2486 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2487 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2488 | ||
815745cf | 2489 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
e20d96d6 CM |
2490 | { |
2491 | return sb->s_fs_info; | |
2492 | } | |
2493 | ||
4beb1b8b CM |
2494 | /* helper function to cast into the data area of the leaf. */ |
2495 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2496 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2497 | btrfs_item_offset_nr(leaf, slot))) |
2498 | ||
2499 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2500 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2501 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2502 | |
67377734 JB |
2503 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2504 | { | |
2505 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2506 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2507 | } | |
2508 | ||
3b16a4e3 JB |
2509 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2510 | { | |
c62d2555 | 2511 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2512 | } |
2513 | ||
b18c6685 | 2514 | /* extent-tree.c */ |
28f75a0e CM |
2515 | |
2516 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_root *root, u64 csum_bytes); | |
2517 | ||
16cdcec7 | 2518 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 2519 | unsigned num_items) |
16cdcec7 | 2520 | { |
0138b6fe | 2521 | return root->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2522 | } |
2523 | ||
2524 | /* | |
2525 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2526 | * COW. | |
2527 | */ | |
2528 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, | |
2529 | unsigned num_items) | |
2530 | { | |
707e8a07 | 2531 | return root->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2532 | } |
2533 | ||
1be41b78 JB |
2534 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
2535 | struct btrfs_root *root); | |
0a2b2a84 JB |
2536 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
2537 | struct btrfs_root *root); | |
9cfa3e34 FM |
2538 | void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, |
2539 | const u64 start); | |
2540 | void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); | |
f78c436c FM |
2541 | bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
2542 | void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); | |
2543 | void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg); | |
fa9c0d79 | 2544 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
2545 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2546 | struct btrfs_root *root, unsigned long count); | |
a79b7d4b | 2547 | int btrfs_async_run_delayed_refs(struct btrfs_root *root, |
31b9655f | 2548 | unsigned long count, u64 transid, int wait); |
1a4ed8fd | 2549 | int btrfs_lookup_data_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
2550 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2551 | struct btrfs_root *root, u64 bytenr, | |
3173a18f | 2552 | u64 offset, int metadata, u64 *refs, u64 *flags); |
11833d66 YZ |
2553 | int btrfs_pin_extent(struct btrfs_root *root, |
2554 | u64 bytenr, u64 num, int reserved); | |
dcfac415 | 2555 | int btrfs_pin_extent_for_log_replay(struct btrfs_root *root, |
e688b725 | 2556 | u64 bytenr, u64 num_bytes); |
8c2a1a30 JB |
2557 | int btrfs_exclude_logged_extents(struct btrfs_root *root, |
2558 | struct extent_buffer *eb); | |
80ff3856 | 2559 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2560 | struct btrfs_root *root, |
2561 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
2562 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2563 | struct btrfs_fs_info *info, | |
2564 | u64 bytenr); | |
758f2dfc | 2565 | void btrfs_get_block_group(struct btrfs_block_group_cache *cache); |
5d4f98a2 | 2566 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
6ab0a202 | 2567 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
4d75f8a9 DS |
2568 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
2569 | struct btrfs_root *root, u64 parent, | |
2570 | u64 root_objectid, | |
5d4f98a2 | 2571 | struct btrfs_disk_key *key, int level, |
5581a51a | 2572 | u64 hint, u64 empty_size); |
f0486c68 YZ |
2573 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2574 | struct btrfs_root *root, | |
2575 | struct extent_buffer *buf, | |
5581a51a | 2576 | u64 parent, int last_ref); |
5d4f98a2 YZ |
2577 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
2578 | struct btrfs_root *root, | |
2579 | u64 root_objectid, u64 owner, | |
5846a3c2 QW |
2580 | u64 offset, u64 ram_bytes, |
2581 | struct btrfs_key *ins); | |
5d4f98a2 YZ |
2582 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
2583 | struct btrfs_root *root, | |
2584 | u64 root_objectid, u64 owner, u64 offset, | |
2585 | struct btrfs_key *ins); | |
18513091 | 2586 | int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, |
00361589 | 2587 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
e570fd27 | 2588 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2589 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2590 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2591 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2592 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 YZ |
2593 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2594 | struct btrfs_root *root, | |
2595 | u64 bytenr, u64 num_bytes, u64 flags, | |
b1c79e09 | 2596 | int level, int is_data); |
31840ae1 ZY |
2597 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2598 | struct btrfs_root *root, | |
66d7e7f0 | 2599 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
b06c4bf5 | 2600 | u64 owner, u64 offset); |
5d4f98a2 | 2601 | |
e570fd27 MX |
2602 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len, |
2603 | int delalloc); | |
e688b725 CM |
2604 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
2605 | u64 start, u64 len); | |
143bede5 JM |
2606 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
2607 | struct btrfs_root *root); | |
ccd467d6 | 2608 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 2609 | struct btrfs_root *root); |
b18c6685 | 2610 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
2611 | struct btrfs_root *root, |
2612 | u64 bytenr, u64 num_bytes, u64 parent, | |
b06c4bf5 | 2613 | u64 root_objectid, u64 owner, u64 offset); |
5d4f98a2 | 2614 | |
1bbc621e CM |
2615 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans, |
2616 | struct btrfs_root *root); | |
9078a3e1 CM |
2617 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2618 | struct btrfs_root *root); | |
dcdf7f6d JB |
2619 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
2620 | struct btrfs_root *root); | |
d2fb3437 | 2621 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
2622 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
2623 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 2624 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
2625 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2626 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 2627 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2628 | u64 size); |
8eab77ff | 2629 | struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( |
7fd01182 FM |
2630 | struct btrfs_fs_info *fs_info, |
2631 | const u64 chunk_offset); | |
1a40e23b | 2632 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
04216820 FM |
2633 | struct btrfs_root *root, u64 group_start, |
2634 | struct extent_map *em); | |
47ab2a6c | 2635 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
e33e17ee JM |
2636 | void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); |
2637 | void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); | |
ea658bad JB |
2638 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
2639 | struct btrfs_root *root); | |
6d07bcec | 2640 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
4184ea7f | 2641 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
2642 | |
2643 | enum btrfs_reserve_flush_enum { | |
2644 | /* If we are in the transaction, we can't flush anything.*/ | |
2645 | BTRFS_RESERVE_NO_FLUSH, | |
2646 | /* | |
2647 | * Flushing delalloc may cause deadlock somewhere, in this | |
2648 | * case, use FLUSH LIMIT | |
2649 | */ | |
2650 | BTRFS_RESERVE_FLUSH_LIMIT, | |
2651 | BTRFS_RESERVE_FLUSH_ALL, | |
2652 | }; | |
2653 | ||
f376df2b JB |
2654 | enum btrfs_flush_state { |
2655 | FLUSH_DELAYED_ITEMS_NR = 1, | |
2656 | FLUSH_DELAYED_ITEMS = 2, | |
2657 | FLUSH_DELALLOC = 3, | |
2658 | FLUSH_DELALLOC_WAIT = 4, | |
2659 | ALLOC_CHUNK = 5, | |
2660 | COMMIT_TRANS = 6, | |
2661 | }; | |
2662 | ||
7cf5b976 | 2663 | int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len); |
4ceff079 | 2664 | int btrfs_alloc_data_chunk_ondemand(struct inode *inode, u64 bytes); |
7cf5b976 | 2665 | void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len); |
51773bec QW |
2666 | void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, |
2667 | u64 len); | |
a22285a6 YZ |
2668 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2669 | struct btrfs_root *root); | |
4fbcdf66 | 2670 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
d68fc57b YZ |
2671 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
2672 | struct inode *inode); | |
2673 | void btrfs_orphan_release_metadata(struct inode *inode); | |
d5c12070 MX |
2674 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2675 | struct btrfs_block_rsv *rsv, | |
2676 | int nitems, | |
ee3441b4 | 2677 | u64 *qgroup_reserved, bool use_global_rsv); |
d5c12070 MX |
2678 | void btrfs_subvolume_release_metadata(struct btrfs_root *root, |
2679 | struct btrfs_block_rsv *rsv, | |
2680 | u64 qgroup_reserved); | |
0ca1f7ce YZ |
2681 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
2682 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
7cf5b976 QW |
2683 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 start, u64 len); |
2684 | void btrfs_delalloc_release_space(struct inode *inode, u64 start, u64 len); | |
66d8f3dd MX |
2685 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
2686 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, | |
2687 | unsigned short type); | |
f0486c68 YZ |
2688 | void btrfs_free_block_rsv(struct btrfs_root *root, |
2689 | struct btrfs_block_rsv *rsv); | |
cdfb080e | 2690 | void __btrfs_free_block_rsv(struct btrfs_block_rsv *rsv); |
4a92b1b8 | 2691 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
2692 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
2693 | enum btrfs_reserve_flush_enum flush); | |
4a92b1b8 | 2694 | int btrfs_block_rsv_check(struct btrfs_root *root, |
36ba022a JB |
2695 | struct btrfs_block_rsv *block_rsv, int min_factor); |
2696 | int btrfs_block_rsv_refill(struct btrfs_root *root, | |
08e007d2 MX |
2697 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
2698 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 | 2699 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
25d609f8 JB |
2700 | struct btrfs_block_rsv *dst_rsv, u64 num_bytes, |
2701 | int update_size); | |
d52be818 JB |
2702 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
2703 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
2704 | int min_factor); | |
f0486c68 YZ |
2705 | void btrfs_block_rsv_release(struct btrfs_root *root, |
2706 | struct btrfs_block_rsv *block_rsv, | |
2707 | u64 num_bytes); | |
868f401a | 2708 | int btrfs_inc_block_group_ro(struct btrfs_root *root, |
f0486c68 | 2709 | struct btrfs_block_group_cache *cache); |
868f401a | 2710 | void btrfs_dec_block_group_ro(struct btrfs_root *root, |
143bede5 | 2711 | struct btrfs_block_group_cache *cache); |
0af3d00b | 2712 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2713 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 2714 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
2715 | u64 start, u64 end); | |
1edb647b FM |
2716 | int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr, |
2717 | u64 num_bytes, u64 *actual_bytes); | |
c87f08ca CM |
2718 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2719 | struct btrfs_root *root, u64 type); | |
f7039b1d | 2720 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 2721 | |
c59021f8 | 2722 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2723 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2724 | struct btrfs_fs_info *fs_info); | |
31e50229 | 2725 | int __get_raid_index(u64 flags); |
9ea24bbe FM |
2726 | int btrfs_start_write_no_snapshoting(struct btrfs_root *root); |
2727 | void btrfs_end_write_no_snapshoting(struct btrfs_root *root); | |
0bc19f90 | 2728 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
39c2d7fa FM |
2729 | void check_system_chunk(struct btrfs_trans_handle *trans, |
2730 | struct btrfs_root *root, | |
4617ea3a | 2731 | const u64 type); |
a5ed9182 OS |
2732 | u64 add_new_free_space(struct btrfs_block_group_cache *block_group, |
2733 | struct btrfs_fs_info *info, u64 start, u64 end); | |
2734 | ||
dee26a9f | 2735 | /* ctree.c */ |
5d4f98a2 YZ |
2736 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
2737 | int level, int *slot); | |
2738 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
2739 | int btrfs_previous_item(struct btrfs_root *root, |
2740 | struct btrfs_path *path, u64 min_objectid, | |
2741 | int type); | |
ade2e0b3 WS |
2742 | int btrfs_previous_extent_item(struct btrfs_root *root, |
2743 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
2744 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
2745 | struct btrfs_path *path, | |
143bede5 | 2746 | struct btrfs_key *new_key); |
925baedd CM |
2747 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2748 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2749 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 2750 | struct btrfs_key *key, int lowest_level, |
de78b51a | 2751 | u64 min_trans); |
3f157a2f | 2752 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 2753 | struct btrfs_path *path, |
3f157a2f | 2754 | u64 min_trans); |
7069830a AB |
2755 | enum btrfs_compare_tree_result { |
2756 | BTRFS_COMPARE_TREE_NEW, | |
2757 | BTRFS_COMPARE_TREE_DELETED, | |
2758 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 2759 | BTRFS_COMPARE_TREE_SAME, |
7069830a AB |
2760 | }; |
2761 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, | |
2762 | struct btrfs_root *right_root, | |
2763 | struct btrfs_path *left_path, | |
2764 | struct btrfs_path *right_path, | |
2765 | struct btrfs_key *key, | |
2766 | enum btrfs_compare_tree_result result, | |
2767 | void *ctx); | |
2768 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
2769 | struct btrfs_root *right_root, | |
2770 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
2771 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2772 | struct btrfs_root *root, struct extent_buffer *buf, | |
2773 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2774 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2775 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2776 | struct btrfs_root *root, | |
2777 | struct extent_buffer *buf, | |
2778 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2779 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2780 | struct extent_buffer *buf); | |
4b90c680 | 2781 | void btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 2782 | u32 data_size); |
afe5fea7 | 2783 | void btrfs_truncate_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 2784 | u32 new_size, int from_end); |
459931ec CM |
2785 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2786 | struct btrfs_root *root, | |
2787 | struct btrfs_path *path, | |
2788 | struct btrfs_key *new_key, | |
2789 | unsigned long split_offset); | |
ad48fd75 YZ |
2790 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2791 | struct btrfs_root *root, | |
2792 | struct btrfs_path *path, | |
2793 | struct btrfs_key *new_key); | |
e33d5c3d KN |
2794 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
2795 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
e089f05c CM |
2796 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
2797 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
2798 | ins_len, int cow); | |
5d9e75c4 JS |
2799 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
2800 | struct btrfs_path *p, u64 time_seq); | |
2f38b3e1 AJ |
2801 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
2802 | struct btrfs_key *key, struct btrfs_path *p, | |
2803 | int find_higher, int return_any); | |
6702ed49 | 2804 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2805 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 2806 | int start_slot, u64 *last_ret, |
a6b6e75e | 2807 | struct btrfs_key *progress); |
b3b4aa74 | 2808 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2809 | struct btrfs_path *btrfs_alloc_path(void); |
2810 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2811 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 2812 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 2813 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
2814 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2815 | ||
85e21bac CM |
2816 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2817 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2818 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2819 | struct btrfs_root *root, | |
2820 | struct btrfs_path *path) | |
2821 | { | |
2822 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2823 | } | |
2824 | ||
afe5fea7 | 2825 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 JM |
2826 | struct btrfs_key *cpu_key, u32 *data_size, |
2827 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
2828 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2829 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2830 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2831 | struct btrfs_root *root, | |
2832 | struct btrfs_path *path, | |
2833 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
2834 | ||
2835 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2836 | struct btrfs_root *root, | |
2837 | struct btrfs_path *path, | |
2838 | struct btrfs_key *key, | |
2839 | u32 data_size) | |
2840 | { | |
2841 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2842 | } | |
2843 | ||
234b63a0 | 2844 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 2845 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2846 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2847 | u64 time_seq); | |
1c8f52a5 AB |
2848 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2849 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2850 | { |
2851 | ++p->slots[0]; | |
2852 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2853 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2854 | return 0; |
2855 | } | |
1c8f52a5 AB |
2856 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2857 | { | |
2858 | return btrfs_next_old_item(root, p, 0); | |
2859 | } | |
5f39d397 | 2860 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
2c536799 JM |
2861 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
2862 | struct btrfs_block_rsv *block_rsv, | |
2863 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
2864 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2865 | struct btrfs_root *root, | |
2866 | struct extent_buffer *node, | |
2867 | struct extent_buffer *parent); | |
7841cb28 DS |
2868 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2869 | { | |
2870 | /* | |
2871 | * Get synced with close_ctree() | |
2872 | */ | |
2873 | smp_mb(); | |
2874 | return fs_info->closing; | |
2875 | } | |
babbf170 MX |
2876 | |
2877 | /* | |
2878 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
2879 | * anything except sleeping. This function is used to check the status of | |
2880 | * the fs. | |
2881 | */ | |
2882 | static inline int btrfs_need_cleaner_sleep(struct btrfs_root *root) | |
2883 | { | |
2884 | return (root->fs_info->sb->s_flags & MS_RDONLY || | |
2885 | btrfs_fs_closing(root->fs_info)); | |
2886 | } | |
2887 | ||
6c41761f DS |
2888 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
2889 | { | |
837d5b6e | 2890 | kfree(fs_info->balance_ctl); |
6c41761f DS |
2891 | kfree(fs_info->delayed_root); |
2892 | kfree(fs_info->extent_root); | |
2893 | kfree(fs_info->tree_root); | |
2894 | kfree(fs_info->chunk_root); | |
2895 | kfree(fs_info->dev_root); | |
2896 | kfree(fs_info->csum_root); | |
bcef60f2 | 2897 | kfree(fs_info->quota_root); |
d8f98039 | 2898 | kfree(fs_info->uuid_root); |
70f6d82e | 2899 | kfree(fs_info->free_space_root); |
6c41761f DS |
2900 | kfree(fs_info->super_copy); |
2901 | kfree(fs_info->super_for_commit); | |
f667aef6 | 2902 | security_free_mnt_opts(&fs_info->security_opts); |
6c41761f DS |
2903 | kfree(fs_info); |
2904 | } | |
7841cb28 | 2905 | |
097b8a7c JS |
2906 | /* tree mod log functions from ctree.c */ |
2907 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2908 | struct seq_list *elem); | |
2909 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2910 | struct seq_list *elem); | |
5b6602e7 | 2911 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 2912 | |
dee26a9f | 2913 | /* root-item.c */ |
0660b5af CM |
2914 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
2915 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
2916 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2917 | const char *name, int name_len); | |
2918 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
2919 | struct btrfs_root *tree_root, | |
2920 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 2921 | const char *name, int name_len); |
e089f05c CM |
2922 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2923 | struct btrfs_key *key); | |
2924 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2925 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2926 | *item); | |
b45a9d8b JM |
2927 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
2928 | struct btrfs_root *root, | |
2929 | struct btrfs_key *key, | |
2930 | struct btrfs_root_item *item); | |
cb517eab MX |
2931 | int btrfs_find_root(struct btrfs_root *root, struct btrfs_key *search_key, |
2932 | struct btrfs_path *path, struct btrfs_root_item *root_item, | |
2933 | struct btrfs_key *root_key); | |
76dda93c | 2934 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
2935 | void btrfs_set_root_node(struct btrfs_root_item *item, |
2936 | struct extent_buffer *node); | |
08fe4db1 | 2937 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
2938 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
2939 | struct btrfs_root *root); | |
08fe4db1 | 2940 | |
07b30a49 SB |
2941 | /* uuid-tree.c */ |
2942 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, | |
2943 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
2944 | u64 subid); | |
2945 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, | |
2946 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
2947 | u64 subid); | |
70f80175 SB |
2948 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
2949 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
2950 | u64)); | |
07b30a49 | 2951 | |
dee26a9f | 2952 | /* dir-item.c */ |
9c52057c CM |
2953 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
2954 | const char *name, int name_len); | |
d397712b CM |
2955 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
2956 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 2957 | int name_len, struct inode *dir, |
aec7477b | 2958 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
2959 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
2960 | struct btrfs_root *root, | |
2961 | struct btrfs_path *path, u64 dir, | |
2962 | const char *name, int name_len, | |
2963 | int mod); | |
2964 | struct btrfs_dir_item * | |
2965 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
2966 | struct btrfs_root *root, | |
2967 | struct btrfs_path *path, u64 dir, | |
2968 | u64 objectid, const char *name, int name_len, | |
2969 | int mod); | |
4df27c4d YZ |
2970 | struct btrfs_dir_item * |
2971 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
2972 | struct btrfs_path *path, u64 dirid, | |
2973 | const char *name, int name_len); | |
7e38180e CM |
2974 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
2975 | struct btrfs_root *root, | |
2976 | struct btrfs_path *path, | |
2977 | struct btrfs_dir_item *di); | |
5103e947 | 2978 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
2979 | struct btrfs_root *root, |
2980 | struct btrfs_path *path, u64 objectid, | |
2981 | const char *name, u16 name_len, | |
2982 | const void *data, u16 data_len); | |
5103e947 JB |
2983 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
2984 | struct btrfs_root *root, | |
2985 | struct btrfs_path *path, u64 dir, | |
2986 | const char *name, u16 name_len, | |
2987 | int mod); | |
22a94d44 JB |
2988 | int verify_dir_item(struct btrfs_root *root, |
2989 | struct extent_buffer *leaf, | |
2990 | struct btrfs_dir_item *dir_item); | |
5f5bc6b1 FM |
2991 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
2992 | struct btrfs_path *path, | |
2993 | const char *name, | |
2994 | int name_len); | |
7b128766 JB |
2995 | |
2996 | /* orphan.c */ | |
2997 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
2998 | struct btrfs_root *root, u64 offset); | |
2999 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3000 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3001 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3002 | |
dee26a9f | 3003 | /* inode-item.c */ |
3954401f CM |
3004 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3005 | struct btrfs_root *root, | |
3006 | const char *name, int name_len, | |
aec7477b | 3007 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3008 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3009 | struct btrfs_root *root, | |
3010 | const char *name, int name_len, | |
aec7477b | 3011 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
3012 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3013 | struct btrfs_root *root, | |
3014 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3015 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3016 | *root, struct btrfs_path *path, |
3017 | struct btrfs_key *location, int mod); | |
dee26a9f | 3018 | |
f186373f MF |
3019 | struct btrfs_inode_extref * |
3020 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3021 | struct btrfs_root *root, | |
3022 | struct btrfs_path *path, | |
3023 | const char *name, int name_len, | |
3024 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3025 | int cow); | |
3026 | ||
3027 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, | |
3028 | u64 ref_objectid, const char *name, | |
3029 | int name_len, | |
3030 | struct btrfs_inode_extref **extref_ret); | |
3031 | ||
dee26a9f | 3032 | /* file-item.c */ |
facc8a22 | 3033 | struct btrfs_dio_private; |
459931ec CM |
3034 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
3035 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 3036 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3037 | struct bio *bio, u32 *dst); |
4b46fce2 | 3038 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
23ea8e5a | 3039 | struct bio *bio, u64 logical_offset); |
b18c6685 | 3040 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3041 | struct btrfs_root *root, |
3042 | u64 objectid, u64 pos, | |
3043 | u64 disk_offset, u64 disk_num_bytes, | |
3044 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3045 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3046 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3047 | struct btrfs_root *root, | |
3048 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3049 | u64 bytenr, int mod); |
065631f6 | 3050 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3051 | struct btrfs_root *root, |
e6dcd2dc | 3052 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 3053 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3054 | struct bio *bio, u64 file_start, int contig); |
a2de733c AJ |
3055 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3056 | struct list_head *list, int search_commit); | |
7ffbb598 FM |
3057 | void btrfs_extent_item_to_extent_map(struct inode *inode, |
3058 | const struct btrfs_path *path, | |
3059 | struct btrfs_file_extent_item *fi, | |
3060 | const bool new_inline, | |
3061 | struct extent_map *em); | |
3062 | ||
39279cc3 | 3063 | /* inode.c */ |
8ccf6f19 MX |
3064 | struct btrfs_delalloc_work { |
3065 | struct inode *inode; | |
8ccf6f19 MX |
3066 | int delay_iput; |
3067 | struct completion completion; | |
3068 | struct list_head list; | |
3069 | struct btrfs_work work; | |
3070 | }; | |
3071 | ||
3072 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, | |
651d494a | 3073 | int delay_iput); |
8ccf6f19 MX |
3074 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); |
3075 | ||
b2675157 JB |
3076 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
3077 | size_t pg_offset, u64 start, u64 len, | |
3078 | int create); | |
00361589 | 3079 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3080 | u64 *orig_start, u64 *orig_block_len, |
3081 | u64 *ram_bytes); | |
4881ee5a CM |
3082 | |
3083 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3084 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3085 | #define ClearPageChecked ClearPageFsMisc |
3086 | #define SetPageChecked SetPageFsMisc | |
3087 | #define PageChecked PageFsMisc | |
3088 | #endif | |
3089 | ||
b6973aa6 LZ |
3090 | /* This forces readahead on a given range of bytes in an inode */ |
3091 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3092 | struct file_ra_state *ra, struct file *file, | |
3093 | pgoff_t offset, unsigned long req_size) | |
3094 | { | |
3095 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3096 | } | |
3097 | ||
3de4586c CM |
3098 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
3099 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
3100 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3101 | struct btrfs_root *root, | |
3102 | struct inode *dir, struct inode *inode, | |
3103 | const char *name, int name_len); | |
3104 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
3105 | struct inode *parent_inode, struct inode *inode, | |
3106 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
3107 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3108 | struct btrfs_root *root, | |
3109 | struct inode *dir, u64 objectid, | |
3110 | const char *name, int name_len); | |
9703fefe | 3111 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
2aaa6655 | 3112 | int front); |
e02119d5 CM |
3113 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3114 | struct btrfs_root *root, | |
3115 | struct inode *inode, u64 new_size, | |
3116 | u32 min_type); | |
3117 | ||
24bbcf04 | 3118 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
6c255e67 MX |
3119 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
3120 | int nr); | |
2ac55d41 JB |
3121 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
3122 | struct extent_state **cached_state); | |
d2fb3437 | 3123 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3124 | struct btrfs_root *new_root, |
3125 | struct btrfs_root *parent_root, | |
3126 | u64 new_dirid); | |
81a75f67 | 3127 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
64a16701 DW |
3128 | size_t size, struct bio *bio, |
3129 | unsigned long bio_flags); | |
c2ec175c | 3130 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 3131 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3132 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3133 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3134 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3135 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3136 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3137 | int btrfs_init_cachep(void); |
3138 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3139 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3140 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3141 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 3142 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 3143 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
3144 | int create); |
3145 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
3146 | struct btrfs_root *root, | |
3147 | struct inode *inode); | |
be6aef60 JB |
3148 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3149 | struct btrfs_root *root, struct inode *inode); | |
5b21f2ed | 3150 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
66b4ffd1 | 3151 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3152 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3153 | struct btrfs_root *root); | |
a41ad394 | 3154 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3155 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
3156 | void btrfs_add_delayed_iput(struct inode *inode); |
3157 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
3158 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3159 | u64 start, u64 num_bytes, u64 min_size, | |
3160 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3161 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3162 | struct btrfs_trans_handle *trans, int mode, | |
3163 | u64 start, u64 num_bytes, u64 min_size, | |
3164 | loff_t actual_len, u64 *alloc_hint); | |
b38ef71c | 3165 | int btrfs_inode_check_errors(struct inode *inode); |
82d339d9 | 3166 | extern const struct dentry_operations btrfs_dentry_operations; |
6a3891c5 JB |
3167 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
3168 | void btrfs_test_inode_set_ops(struct inode *inode); | |
3169 | #endif | |
f46b5a66 CH |
3170 | |
3171 | /* ioctl.c */ | |
3172 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3173 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
d5131b65 | 3174 | int btrfs_ioctl_get_supported_features(void __user *arg); |
6cbff00f CH |
3175 | void btrfs_update_iflags(struct inode *inode); |
3176 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
dd5f9615 | 3177 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3178 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3179 | struct btrfs_ioctl_defrag_range_args *range, | |
3180 | u64 newer_than, unsigned long max_pages); | |
5af3e8cc SB |
3181 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3182 | struct btrfs_ioctl_space_info *space); | |
35a3621b SB |
3183 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
3184 | struct btrfs_ioctl_balance_args *bargs); | |
2b3909f8 DW |
3185 | ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen, |
3186 | struct file *dst_file, u64 dst_loff); | |
35a3621b | 3187 | |
39279cc3 | 3188 | /* file.c */ |
9247f317 MX |
3189 | int btrfs_auto_defrag_init(void); |
3190 | void btrfs_auto_defrag_exit(void); | |
4cb5300b CM |
3191 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
3192 | struct inode *inode); | |
3193 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
26176e7c | 3194 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3195 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
7014cdb4 JB |
3196 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
3197 | int skip_pinned); | |
828c0950 | 3198 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3199 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3200 | struct btrfs_root *root, struct inode *inode, | |
3201 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3202 | u64 *drop_end, int drop_cache, |
3203 | int replace_extent, | |
3204 | u32 extent_item_size, | |
3205 | int *key_inserted); | |
5dc562c5 JB |
3206 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3207 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3208 | u64 end, int drop_cache); |
d899e052 | 3209 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 3210 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 3211 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
3212 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, |
3213 | struct page **pages, size_t num_pages, | |
3214 | loff_t pos, size_t write_bytes, | |
3215 | struct extent_state **cached); | |
728404da | 3216 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
3db11b2e ZB |
3217 | ssize_t btrfs_copy_file_range(struct file *file_in, loff_t pos_in, |
3218 | struct file *file_out, loff_t pos_out, | |
3219 | size_t len, unsigned int flags); | |
04b38d60 CH |
3220 | int btrfs_clone_file_range(struct file *file_in, loff_t pos_in, |
3221 | struct file *file_out, loff_t pos_out, u64 len); | |
6bf13c0c | 3222 | |
6702ed49 CM |
3223 | /* tree-defrag.c */ |
3224 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3225 | struct btrfs_root *root); |
58176a96 JB |
3226 | |
3227 | /* sysfs.c */ | |
3228 | int btrfs_init_sysfs(void); | |
3229 | void btrfs_exit_sysfs(void); | |
96f3136e | 3230 | int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info); |
6618a59b | 3231 | void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info); |
58176a96 | 3232 | |
5103e947 JB |
3233 | /* xattr.c */ |
3234 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3235 | |
edbd8d4e | 3236 | /* super.c */ |
96da0919 QW |
3237 | int btrfs_parse_options(struct btrfs_root *root, char *options, |
3238 | unsigned long new_flags); | |
6bf13c0c | 3239 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 JP |
3240 | |
3241 | #ifdef CONFIG_PRINTK | |
3242 | __printf(2, 3) | |
c2cf52eb | 3243 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 JP |
3244 | #else |
3245 | static inline __printf(2, 3) | |
c2cf52eb | 3246 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
533574c6 JP |
3247 | { |
3248 | } | |
3249 | #endif | |
3250 | ||
c2cf52eb SK |
3251 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3252 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3253 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3254 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3255 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3256 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3257 | #define btrfs_err(fs_info, fmt, args...) \ | |
3258 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3259 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3260 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3261 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3262 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3263 | #define btrfs_info(fs_info, fmt, args...) \ | |
3264 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3265 | |
08a84e25 DS |
3266 | /* |
3267 | * Wrappers that use printk_in_rcu | |
3268 | */ | |
3269 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3270 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3271 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3272 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3273 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3274 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3275 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3276 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3277 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3278 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3279 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3280 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3281 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3282 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3283 | ||
24aa6b41 DS |
3284 | /* |
3285 | * Wrappers that use a ratelimited printk_in_rcu | |
3286 | */ | |
3287 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3288 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3289 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3290 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3291 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3292 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3293 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3294 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3295 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3296 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3297 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3298 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3299 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3300 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3301 | ||
1dd6d7ca DS |
3302 | /* |
3303 | * Wrappers that use a ratelimited printk | |
3304 | */ | |
3305 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3306 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3307 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3308 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3309 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3310 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3311 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3312 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3313 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3314 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3315 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3316 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3317 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3318 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3319 | #ifdef DEBUG |
c2cf52eb SK |
3320 | #define btrfs_debug(fs_info, fmt, args...) \ |
3321 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3322 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3323 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3324 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3325 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3326 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3327 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3328 | #else |
3329 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3330 | no_printk(KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3331 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3332 | no_printk(KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3333 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3334 | no_printk(KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3335 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3336 | no_printk(KERN_DEBUG fmt, ##args) | |
27a0dd61 | 3337 | #endif |
c2cf52eb | 3338 | |
08a84e25 DS |
3339 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3340 | do { \ | |
3341 | rcu_read_lock(); \ | |
3342 | btrfs_printk(fs_info, fmt, ##args); \ | |
3343 | rcu_read_unlock(); \ | |
3344 | } while (0) | |
3345 | ||
24aa6b41 DS |
3346 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3347 | do { \ | |
3348 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3349 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3350 | DEFAULT_RATELIMIT_BURST); \ | |
3351 | if (__ratelimit(&_rs)) \ | |
3352 | btrfs_printk(fs_info, fmt, ##args); \ | |
3353 | } while (0) | |
3354 | ||
3355 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3356 | do { \ | |
3357 | rcu_read_lock(); \ | |
3358 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3359 | rcu_read_unlock(); \ | |
3360 | } while (0) | |
3361 | ||
2e17c7c6 JB |
3362 | #ifdef CONFIG_BTRFS_ASSERT |
3363 | ||
c0d19e2b | 3364 | __cold |
2e17c7c6 JB |
3365 | static inline void assfail(char *expr, char *file, int line) |
3366 | { | |
efe120a0 | 3367 | pr_err("BTRFS: assertion failed: %s, file: %s, line: %d", |
2e17c7c6 JB |
3368 | expr, file, line); |
3369 | BUG(); | |
3370 | } | |
3371 | ||
3372 | #define ASSERT(expr) \ | |
3373 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3374 | #else | |
3375 | #define ASSERT(expr) ((void)0) | |
3376 | #endif | |
3377 | ||
533574c6 | 3378 | __printf(5, 6) |
c0d19e2b | 3379 | __cold |
34d97007 | 3380 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3381 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3382 | |
e33e17ee | 3383 | const char *btrfs_decode_error(int errno); |
533574c6 | 3384 | |
c0d19e2b | 3385 | __cold |
49b25e05 | 3386 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
66642832 | 3387 | const char *function, |
49b25e05 JM |
3388 | unsigned int line, int errno); |
3389 | ||
c5f4ccb2 AJ |
3390 | /* |
3391 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3392 | * detected, that way the exact line number is reported. | |
3393 | */ | |
66642832 | 3394 | #define btrfs_abort_transaction(trans, errno) \ |
c5f4ccb2 AJ |
3395 | do { \ |
3396 | /* Report first abort since mount */ \ | |
3397 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
66642832 | 3398 | &((trans)->fs_info->fs_state))) { \ |
c5f4ccb2 AJ |
3399 | WARN(1, KERN_DEBUG \ |
3400 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3401 | (errno)); \ | |
3402 | } \ | |
66642832 | 3403 | __btrfs_abort_transaction((trans), __func__, \ |
c5f4ccb2 AJ |
3404 | __LINE__, (errno)); \ |
3405 | } while (0) | |
3406 | ||
3407 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3408 | do { \ | |
3409 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3410 | (errno), fmt, ##args); \ | |
3411 | } while (0) | |
3412 | ||
3413 | __printf(5, 6) | |
3414 | __cold | |
3415 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3416 | unsigned int line, int errno, const char *fmt, ...); | |
3417 | /* | |
3418 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3419 | * will panic(). Otherwise we BUG() here. | |
3420 | */ | |
3421 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3422 | do { \ | |
3423 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3424 | BUG(); \ | |
3425 | } while (0) | |
3426 | ||
3427 | ||
3428 | /* compatibility and incompatibility defines */ | |
3429 | ||
2b0ce2c2 MH |
3430 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3431 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3432 | ||
3433 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3434 | u64 flag) | |
3435 | { | |
3436 | struct btrfs_super_block *disk_super; | |
3437 | u64 features; | |
3438 | ||
3439 | disk_super = fs_info->super_copy; | |
3440 | features = btrfs_super_incompat_flags(disk_super); | |
3441 | if (!(features & flag)) { | |
ceda0864 MX |
3442 | spin_lock(&fs_info->super_lock); |
3443 | features = btrfs_super_incompat_flags(disk_super); | |
3444 | if (!(features & flag)) { | |
3445 | features |= flag; | |
3446 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3447 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3448 | flag); |
3449 | } | |
3450 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3451 | } |
3452 | } | |
3453 | ||
1abfbcdf OS |
3454 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
3455 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3456 | ||
3457 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
3458 | u64 flag) | |
3459 | { | |
3460 | struct btrfs_super_block *disk_super; | |
3461 | u64 features; | |
3462 | ||
3463 | disk_super = fs_info->super_copy; | |
3464 | features = btrfs_super_incompat_flags(disk_super); | |
3465 | if (features & flag) { | |
3466 | spin_lock(&fs_info->super_lock); | |
3467 | features = btrfs_super_incompat_flags(disk_super); | |
3468 | if (features & flag) { | |
3469 | features &= ~flag; | |
3470 | btrfs_set_super_incompat_flags(disk_super, features); | |
3471 | btrfs_info(fs_info, "clearing %llu feature flag", | |
3472 | flag); | |
3473 | } | |
3474 | spin_unlock(&fs_info->super_lock); | |
3475 | } | |
3476 | } | |
3477 | ||
3173a18f JB |
3478 | #define btrfs_fs_incompat(fs_info, opt) \ |
3479 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3480 | ||
9780c497 | 3481 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3482 | { |
3483 | struct btrfs_super_block *disk_super; | |
3484 | disk_super = fs_info->super_copy; | |
3485 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3486 | } | |
3487 | ||
1abfbcdf OS |
3488 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
3489 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3490 | ||
3491 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3492 | u64 flag) | |
3493 | { | |
3494 | struct btrfs_super_block *disk_super; | |
3495 | u64 features; | |
3496 | ||
3497 | disk_super = fs_info->super_copy; | |
3498 | features = btrfs_super_compat_ro_flags(disk_super); | |
3499 | if (!(features & flag)) { | |
3500 | spin_lock(&fs_info->super_lock); | |
3501 | features = btrfs_super_compat_ro_flags(disk_super); | |
3502 | if (!(features & flag)) { | |
3503 | features |= flag; | |
3504 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3505 | btrfs_info(fs_info, "setting %llu ro feature flag", | |
3506 | flag); | |
3507 | } | |
3508 | spin_unlock(&fs_info->super_lock); | |
3509 | } | |
3510 | } | |
3511 | ||
3512 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
3513 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3514 | ||
3515 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3516 | u64 flag) | |
3517 | { | |
3518 | struct btrfs_super_block *disk_super; | |
3519 | u64 features; | |
3520 | ||
3521 | disk_super = fs_info->super_copy; | |
3522 | features = btrfs_super_compat_ro_flags(disk_super); | |
3523 | if (features & flag) { | |
3524 | spin_lock(&fs_info->super_lock); | |
3525 | features = btrfs_super_compat_ro_flags(disk_super); | |
3526 | if (features & flag) { | |
3527 | features &= ~flag; | |
3528 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3529 | btrfs_info(fs_info, "clearing %llu ro feature flag", | |
3530 | flag); | |
3531 | } | |
3532 | spin_unlock(&fs_info->super_lock); | |
3533 | } | |
3534 | } | |
3535 | ||
3536 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3537 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3538 | ||
3539 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3540 | { | |
3541 | struct btrfs_super_block *disk_super; | |
3542 | disk_super = fs_info->super_copy; | |
3543 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3544 | } | |
3545 | ||
33268eaf | 3546 | /* acl.c */ |
0eda294d | 3547 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3548 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3549 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3550 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3551 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3552 | #else |
ed8f3737 | 3553 | #define btrfs_get_acl NULL |
996a710d | 3554 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3555 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3556 | struct inode *inode, struct inode *dir) | |
3557 | { | |
3558 | return 0; | |
3559 | } | |
9b89d95a | 3560 | #endif |
0f9dd46c | 3561 | |
5d4f98a2 YZ |
3562 | /* relocation.c */ |
3563 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
3564 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
3565 | struct btrfs_root *root); | |
3566 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3567 | struct btrfs_root *root); | |
3568 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3569 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
3570 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3571 | struct btrfs_root *root, struct extent_buffer *buf, | |
3572 | struct extent_buffer *cow); | |
147d256e | 3573 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 3574 | u64 *bytes_to_reserve); |
49b25e05 | 3575 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3576 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3577 | |
3578 | /* scrub.c */ | |
aa1b8cd4 SB |
3579 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3580 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3581 | int readonly, int is_dev_replace); |
143bede5 | 3582 | void btrfs_scrub_pause(struct btrfs_root *root); |
143bede5 | 3583 | void btrfs_scrub_continue(struct btrfs_root *root); |
aa1b8cd4 SB |
3584 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
3585 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
3586 | struct btrfs_device *dev); | |
a2de733c AJ |
3587 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, |
3588 | struct btrfs_scrub_progress *progress); | |
c404e0dc MX |
3589 | |
3590 | /* dev-replace.c */ | |
3591 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
3592 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
3593 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
3594 | ||
3595 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
3596 | { | |
3597 | btrfs_bio_counter_sub(fs_info, 1); | |
3598 | } | |
a2de733c | 3599 | |
7414a03f AJ |
3600 | /* reada.c */ |
3601 | struct reada_control { | |
3602 | struct btrfs_root *root; /* tree to prefetch */ | |
3603 | struct btrfs_key key_start; | |
3604 | struct btrfs_key key_end; /* exclusive */ | |
3605 | atomic_t elems; | |
3606 | struct kref refcnt; | |
3607 | wait_queue_head_t wait; | |
3608 | }; | |
3609 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3610 | struct btrfs_key *start, struct btrfs_key *end); | |
3611 | int btrfs_reada_wait(void *handle); | |
3612 | void btrfs_reada_detach(void *handle); | |
02873e43 ZL |
3613 | int btree_readahead_hook(struct btrfs_fs_info *fs_info, |
3614 | struct extent_buffer *eb, u64 start, int err); | |
7414a03f | 3615 | |
95a06077 JS |
3616 | static inline int is_fstree(u64 rootid) |
3617 | { | |
3618 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
3619 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
3620 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
3621 | return 1; |
3622 | return 0; | |
3623 | } | |
210549eb DS |
3624 | |
3625 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3626 | { | |
3627 | return signal_pending(current); | |
3628 | } | |
3629 | ||
aaedb55b JB |
3630 | /* Sanity test specific functions */ |
3631 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3632 | void btrfs_test_destroy_inode(struct inode *inode); | |
3633 | #endif | |
210549eb | 3634 | |
f5ee5c9a | 3635 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
fccb84c9 DS |
3636 | { |
3637 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
f5ee5c9a JM |
3638 | if (unlikely(test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, |
3639 | &fs_info->fs_state))) | |
fccb84c9 DS |
3640 | return 1; |
3641 | #endif | |
3642 | return 0; | |
3643 | } | |
eb60ceac | 3644 | #endif |