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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> |
897a41b1 | 40 | #include <linux/dynamic_debug.h> |
d1310b2e | 41 | #include "extent_io.h" |
5f39d397 | 42 | #include "extent_map.h" |
8b712842 | 43 | #include "async-thread.h" |
e20d96d6 | 44 | |
e089f05c | 45 | struct btrfs_trans_handle; |
79154b1b | 46 | struct btrfs_transaction; |
a22285a6 | 47 | struct btrfs_pending_snapshot; |
35b7e476 CM |
48 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
49 | extern struct kmem_cache *btrfs_transaction_cachep; | |
50 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 51 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 52 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 53 | struct btrfs_ordered_sum; |
e089f05c | 54 | |
294e30fe JB |
55 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
56 | #define STATIC noinline | |
57 | #else | |
58 | #define STATIC static noinline | |
59 | #endif | |
60 | ||
cdb4c574 | 61 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 62 | |
72d7aefc | 63 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 64 | |
4008c04a | 65 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 66 | |
5d4f98a2 YZ |
67 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
68 | ||
727011e0 CM |
69 | /* |
70 | * the max metadata block size. This limit is somewhat artificial, | |
71 | * but the memmove costs go through the roof for larger blocks. | |
72 | */ | |
73 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
74 | ||
e20d96d6 CM |
75 | /* |
76 | * we can actually store much bigger names, but lets not confuse the rest | |
77 | * of linux | |
78 | */ | |
79 | #define BTRFS_NAME_LEN 255 | |
80 | ||
f186373f MF |
81 | /* |
82 | * Theoretical limit is larger, but we keep this down to a sane | |
83 | * value. That should limit greatly the possibility of collisions on | |
84 | * inode ref items. | |
85 | */ | |
86 | #define BTRFS_LINK_MAX 65535U | |
87 | ||
4d4ab6d6 | 88 | static const int btrfs_csum_sizes[] = { 4 }; |
607d432d | 89 | |
509659cd | 90 | /* four bytes for CRC32 */ |
3954401f | 91 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 92 | |
01327610 | 93 | /* specific to btrfs_map_block(), therefore not in include/linux/blk_types.h */ |
29a8d9a0 SB |
94 | #define REQ_GET_READ_MIRRORS (1 << 30) |
95 | ||
3d136a11 SB |
96 | /* ioprio of readahead is set to idle */ |
97 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
98 | ||
ee22184b | 99 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M |
e2d84521 | 100 | |
ee22184b | 101 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M |
dcab6a3b | 102 | |
0b86a832 CM |
103 | struct btrfs_mapping_tree { |
104 | struct extent_map_tree map_tree; | |
105 | }; | |
106 | ||
0b86a832 CM |
107 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
108 | { | |
109 | BUG_ON(num_stripes == 0); | |
110 | return sizeof(struct btrfs_chunk) + | |
111 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
112 | } | |
113 | ||
acce952b | 114 | /* |
115 | * File system states | |
116 | */ | |
87533c47 | 117 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 118 | #define BTRFS_FS_STATE_REMOUNTING 1 |
08748810 | 119 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
c404e0dc | 120 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
7c0260ee | 121 | #define BTRFS_FS_STATE_DUMMY_FS_INFO 4 |
acce952b | 122 | |
5d4f98a2 YZ |
123 | #define BTRFS_BACKREF_REV_MAX 256 |
124 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
125 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
126 | BTRFS_BACKREF_REV_SHIFT) | |
127 | ||
128 | #define BTRFS_OLD_BACKREF_REV 0 | |
129 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 130 | |
fec577fb CM |
131 | /* |
132 | * every tree block (leaf or node) starts with this header. | |
133 | */ | |
bb492bb0 | 134 | struct btrfs_header { |
e17cade2 | 135 | /* these first four must match the super block */ |
f254e52c | 136 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 137 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 138 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 139 | __le64 flags; |
e17cade2 CM |
140 | |
141 | /* allowed to be different from the super from here on down */ | |
142 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 143 | __le64 generation; |
4d775673 | 144 | __le64 owner; |
5f39d397 | 145 | __le32 nritems; |
9a6f11ed | 146 | u8 level; |
eb60ceac CM |
147 | } __attribute__ ((__packed__)); |
148 | ||
0b86a832 CM |
149 | /* |
150 | * this is a very generous portion of the super block, giving us | |
151 | * room to translate 14 chunks with 3 stripes each. | |
152 | */ | |
153 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
154 | ||
af31f5e5 CM |
155 | /* |
156 | * just in case we somehow lose the roots and are not able to mount, | |
157 | * we store an array of the roots from previous transactions | |
158 | * in the super. | |
159 | */ | |
160 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
161 | struct btrfs_root_backup { | |
162 | __le64 tree_root; | |
163 | __le64 tree_root_gen; | |
164 | ||
165 | __le64 chunk_root; | |
166 | __le64 chunk_root_gen; | |
167 | ||
168 | __le64 extent_root; | |
169 | __le64 extent_root_gen; | |
170 | ||
171 | __le64 fs_root; | |
172 | __le64 fs_root_gen; | |
173 | ||
174 | __le64 dev_root; | |
175 | __le64 dev_root_gen; | |
176 | ||
177 | __le64 csum_root; | |
178 | __le64 csum_root_gen; | |
179 | ||
180 | __le64 total_bytes; | |
181 | __le64 bytes_used; | |
182 | __le64 num_devices; | |
183 | /* future */ | |
d1423248 | 184 | __le64 unused_64[4]; |
af31f5e5 CM |
185 | |
186 | u8 tree_root_level; | |
187 | u8 chunk_root_level; | |
188 | u8 extent_root_level; | |
189 | u8 fs_root_level; | |
190 | u8 dev_root_level; | |
191 | u8 csum_root_level; | |
192 | /* future and to align */ | |
193 | u8 unused_8[10]; | |
194 | } __attribute__ ((__packed__)); | |
195 | ||
fec577fb CM |
196 | /* |
197 | * the super block basically lists the main trees of the FS | |
198 | * it currently lacks any block count etc etc | |
199 | */ | |
234b63a0 | 200 | struct btrfs_super_block { |
f254e52c | 201 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 202 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 203 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 204 | __le64 bytenr; /* this block number */ |
63b10fc4 | 205 | __le64 flags; |
e17cade2 CM |
206 | |
207 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 208 | __le64 magic; |
3768f368 CM |
209 | __le64 generation; |
210 | __le64 root; | |
0b86a832 | 211 | __le64 chunk_root; |
e02119d5 | 212 | __le64 log_root; |
c3027eb5 CM |
213 | |
214 | /* this will help find the new super based on the log root */ | |
215 | __le64 log_root_transid; | |
db94535d CM |
216 | __le64 total_bytes; |
217 | __le64 bytes_used; | |
2e635a27 | 218 | __le64 root_dir_objectid; |
8a4b83cc | 219 | __le64 num_devices; |
5f39d397 CM |
220 | __le32 sectorsize; |
221 | __le32 nodesize; | |
707e8a07 | 222 | __le32 __unused_leafsize; |
87ee04eb | 223 | __le32 stripesize; |
0b86a832 | 224 | __le32 sys_chunk_array_size; |
84234f3a | 225 | __le64 chunk_root_generation; |
f2b636e8 JB |
226 | __le64 compat_flags; |
227 | __le64 compat_ro_flags; | |
228 | __le64 incompat_flags; | |
607d432d | 229 | __le16 csum_type; |
db94535d | 230 | u8 root_level; |
0b86a832 | 231 | u8 chunk_root_level; |
e02119d5 | 232 | u8 log_root_level; |
0d81ba5d | 233 | struct btrfs_dev_item dev_item; |
c3027eb5 | 234 | |
7ae9c09d | 235 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 236 | |
0af3d00b | 237 | __le64 cache_generation; |
26432799 | 238 | __le64 uuid_tree_generation; |
0af3d00b | 239 | |
c3027eb5 | 240 | /* future expansion */ |
26432799 | 241 | __le64 reserved[30]; |
0b86a832 | 242 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 243 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
244 | } __attribute__ ((__packed__)); |
245 | ||
f2b636e8 JB |
246 | /* |
247 | * Compat flags that we support. If any incompat flags are set other than the | |
248 | * ones specified below then we will fail to mount | |
249 | */ | |
5d4f98a2 | 250 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
251 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
252 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
70f6d82e OS |
253 | |
254 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ | |
255 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE) | |
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; |
afcdd129 JB |
680 | |
681 | #define BTRFS_FS_BARRIER 1 | |
682 | #define BTRFS_FS_CLOSING_START 2 | |
683 | #define BTRFS_FS_CLOSING_DONE 3 | |
684 | #define BTRFS_FS_LOG_RECOVERING 4 | |
685 | #define BTRFS_FS_OPEN 5 | |
686 | #define BTRFS_FS_QUOTA_ENABLED 6 | |
687 | #define BTRFS_FS_QUOTA_ENABLING 7 | |
688 | #define BTRFS_FS_QUOTA_DISABLING 8 | |
689 | #define BTRFS_FS_UPDATE_UUID_TREE_GEN 9 | |
690 | #define BTRFS_FS_CREATING_FREE_SPACE_TREE 10 | |
691 | #define BTRFS_FS_BTREE_ERR 11 | |
692 | #define BTRFS_FS_LOG1_ERR 12 | |
693 | #define BTRFS_FS_LOG2_ERR 13 | |
694 | ||
9f5fae2f | 695 | struct btrfs_fs_info { |
5f39d397 | 696 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 697 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
afcdd129 | 698 | unsigned long flags; |
62e2749e CM |
699 | struct btrfs_root *extent_root; |
700 | struct btrfs_root *tree_root; | |
0b86a832 CM |
701 | struct btrfs_root *chunk_root; |
702 | struct btrfs_root *dev_root; | |
3de4586c | 703 | struct btrfs_root *fs_root; |
d20f7043 | 704 | struct btrfs_root *csum_root; |
416ac51d | 705 | struct btrfs_root *quota_root; |
f7a81ea4 | 706 | struct btrfs_root *uuid_root; |
a5ed9182 | 707 | struct btrfs_root *free_space_root; |
e02119d5 CM |
708 | |
709 | /* the log root tree is a directory of all the other log roots */ | |
710 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
711 | |
712 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 713 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 714 | |
0f9dd46c JB |
715 | /* block group cache stuff */ |
716 | spinlock_t block_group_cache_lock; | |
a1897fdd | 717 | u64 first_logical_byte; |
0f9dd46c JB |
718 | struct rb_root block_group_cache_tree; |
719 | ||
2bf64758 JB |
720 | /* keep track of unallocated space */ |
721 | spinlock_t free_chunk_lock; | |
722 | u64 free_chunk_space; | |
723 | ||
11833d66 YZ |
724 | struct extent_io_tree freed_extents[2]; |
725 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 726 | |
0b86a832 CM |
727 | /* logical->physical extent mapping */ |
728 | struct btrfs_mapping_tree mapping_tree; | |
729 | ||
16cdcec7 MX |
730 | /* |
731 | * block reservation for extent, checksum, root tree and | |
732 | * delayed dir index item | |
733 | */ | |
f0486c68 YZ |
734 | struct btrfs_block_rsv global_block_rsv; |
735 | /* block reservation for delay allocation */ | |
736 | struct btrfs_block_rsv delalloc_block_rsv; | |
737 | /* block reservation for metadata operations */ | |
738 | struct btrfs_block_rsv trans_block_rsv; | |
739 | /* block reservation for chunk tree */ | |
740 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
741 | /* block reservation for delayed operations */ |
742 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
743 | |
744 | struct btrfs_block_rsv empty_block_rsv; | |
745 | ||
293ffd5f | 746 | u64 generation; |
15ee9bc7 | 747 | u64 last_trans_committed; |
0a2b2a84 | 748 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
749 | |
750 | /* | |
751 | * this is updated to the current trans every time a full commit | |
752 | * is required instead of the faster short fsync log commits | |
753 | */ | |
754 | u64 last_trans_log_full_commit; | |
25cd999e | 755 | unsigned long mount_opt; |
572d9ab7 DS |
756 | /* |
757 | * Track requests for actions that need to be done during transaction | |
758 | * commit (like for some mount options). | |
759 | */ | |
760 | unsigned long pending_changes; | |
261507a0 | 761 | unsigned long compress_type:4; |
8b87dc17 | 762 | int commit_interval; |
8c6a3ee6 MX |
763 | /* |
764 | * It is a suggestive number, the read side is safe even it gets a | |
765 | * wrong number because we will write out the data into a regular | |
766 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
767 | * so it is also safe. | |
768 | */ | |
6f568d35 | 769 | u64 max_inline; |
c018daec MX |
770 | /* |
771 | * Protected by ->chunk_mutex and sb->s_umount. | |
772 | * | |
773 | * The reason that we use two lock to protect it is because only | |
774 | * remount and mount operations can change it and these two operations | |
775 | * are under sb->s_umount, but the read side (chunk allocation) can not | |
776 | * acquire sb->s_umount or the deadlock would happen. So we use two | |
777 | * locks to protect it. On the write side, we must acquire two locks, | |
778 | * and on the read side, we just need acquire one of them. | |
779 | */ | |
8f662a76 | 780 | u64 alloc_start; |
79154b1b | 781 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 782 | wait_queue_head_t transaction_throttle; |
f9295749 | 783 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 784 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 785 | wait_queue_head_t async_submit_wait; |
e02119d5 | 786 | |
ceda0864 MX |
787 | /* |
788 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
789 | * when they are updated. | |
790 | * | |
791 | * Because we do not clear the flags for ever, so we needn't use | |
792 | * the lock on the read side. | |
793 | * | |
794 | * We also needn't use the lock when we mount the fs, because | |
795 | * there is no other task which will update the flag. | |
796 | */ | |
797 | spinlock_t super_lock; | |
6c41761f DS |
798 | struct btrfs_super_block *super_copy; |
799 | struct btrfs_super_block *super_for_commit; | |
0b86a832 | 800 | struct block_device *__bdev; |
e20d96d6 | 801 | struct super_block *sb; |
d98237b3 | 802 | struct inode *btree_inode; |
04160088 | 803 | struct backing_dev_info bdi; |
e02119d5 | 804 | struct mutex tree_log_mutex; |
a74a4b97 CM |
805 | struct mutex transaction_kthread_mutex; |
806 | struct mutex cleaner_mutex; | |
925baedd | 807 | struct mutex chunk_mutex; |
7d9eb12c | 808 | struct mutex volume_mutex; |
53b381b3 | 809 | |
1bbc621e CM |
810 | /* |
811 | * this is taken to make sure we don't set block groups ro after | |
812 | * the free space cache has been allocated on them | |
813 | */ | |
814 | struct mutex ro_block_group_mutex; | |
815 | ||
53b381b3 DW |
816 | /* this is used during read/modify/write to make sure |
817 | * no two ios are trying to mod the same stripe at the same | |
818 | * time | |
819 | */ | |
820 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
821 | ||
5a3f23d5 CM |
822 | /* |
823 | * this protects the ordered operations list only while we are | |
824 | * processing all of the entries on it. This way we make | |
825 | * sure the commit code doesn't find the list temporarily empty | |
826 | * because another function happens to be doing non-waiting preflush | |
827 | * before jumping into the main commit. | |
828 | */ | |
829 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 830 | |
9e351cc8 | 831 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 832 | |
c71bf099 | 833 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 834 | |
c71bf099 | 835 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
836 | struct srcu_struct subvol_srcu; |
837 | ||
a4abeea4 | 838 | spinlock_t trans_lock; |
7585717f CM |
839 | /* |
840 | * the reloc mutex goes with the trans lock, it is taken | |
841 | * during commit to protect us from the relocation code | |
842 | */ | |
843 | struct mutex reloc_mutex; | |
844 | ||
8fd17795 | 845 | struct list_head trans_list; |
facda1e7 | 846 | struct list_head dead_roots; |
11833d66 | 847 | struct list_head caching_block_groups; |
e02119d5 | 848 | |
24bbcf04 YZ |
849 | spinlock_t delayed_iput_lock; |
850 | struct list_head delayed_iputs; | |
c2d6cb16 | 851 | struct mutex cleaner_delayed_iput_mutex; |
24bbcf04 | 852 | |
f29021b2 JS |
853 | /* this protects tree_mod_seq_list */ |
854 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 855 | atomic64_t tree_mod_seq; |
f29021b2 JS |
856 | struct list_head tree_mod_seq_list; |
857 | ||
858 | /* this protects tree_mod_log */ | |
859 | rwlock_t tree_mod_log_lock; | |
860 | struct rb_root tree_mod_log; | |
861 | ||
cb03c743 | 862 | atomic_t nr_async_submits; |
8c8bee1d | 863 | atomic_t async_submit_draining; |
0986fe9e | 864 | atomic_t nr_async_bios; |
771ed689 | 865 | atomic_t async_delalloc_pages; |
a4abeea4 | 866 | atomic_t open_ioctl_trans; |
ce9adaa5 | 867 | |
3eaa2885 | 868 | /* |
199c2a9c | 869 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 870 | */ |
199c2a9c | 871 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
872 | |
873 | /* | |
199c2a9c MX |
874 | * all fs/file tree roots in which there are data=ordered extents |
875 | * pending writeback are added into this list. | |
876 | * | |
5a3f23d5 CM |
877 | * these can span multiple transactions and basically include |
878 | * every dirty data page that isn't from nodatacow | |
879 | */ | |
199c2a9c | 880 | struct list_head ordered_roots; |
5a3f23d5 | 881 | |
573bfb72 | 882 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
883 | spinlock_t delalloc_root_lock; |
884 | /* all fs/file tree roots that have delalloc inodes. */ | |
885 | struct list_head delalloc_roots; | |
3eaa2885 | 886 | |
8b712842 CM |
887 | /* |
888 | * there is a pool of worker threads for checksumming during writes | |
889 | * and a pool for checksumming after reads. This is because readers | |
890 | * can run with FS locks held, and the writers may be waiting for | |
891 | * those locks. We don't want ordering in the pending list to cause | |
892 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
893 | * |
894 | * A third pool does submit_bio to avoid deadlocking with the other | |
895 | * two | |
8b712842 | 896 | */ |
d458b054 QW |
897 | struct btrfs_workqueue *workers; |
898 | struct btrfs_workqueue *delalloc_workers; | |
899 | struct btrfs_workqueue *flush_workers; | |
900 | struct btrfs_workqueue *endio_workers; | |
901 | struct btrfs_workqueue *endio_meta_workers; | |
902 | struct btrfs_workqueue *endio_raid56_workers; | |
8b110e39 | 903 | struct btrfs_workqueue *endio_repair_workers; |
d458b054 QW |
904 | struct btrfs_workqueue *rmw_workers; |
905 | struct btrfs_workqueue *endio_meta_write_workers; | |
906 | struct btrfs_workqueue *endio_write_workers; | |
907 | struct btrfs_workqueue *endio_freespace_worker; | |
908 | struct btrfs_workqueue *submit_workers; | |
909 | struct btrfs_workqueue *caching_workers; | |
910 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 911 | |
247e743c CM |
912 | /* |
913 | * fixup workers take dirty pages that didn't properly go through | |
914 | * the cow mechanism and make them safe to write. It happens | |
915 | * for the sys_munmap function call path | |
916 | */ | |
d458b054 QW |
917 | struct btrfs_workqueue *fixup_workers; |
918 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b CM |
919 | |
920 | /* the extent workers do delayed refs on the extent allocation tree */ | |
921 | struct btrfs_workqueue *extent_workers; | |
a74a4b97 CM |
922 | struct task_struct *transaction_kthread; |
923 | struct task_struct *cleaner_kthread; | |
4543df7e | 924 | int thread_pool_size; |
8b712842 | 925 | |
6ab0a202 | 926 | struct kobject *space_info_kobj; |
9f5fae2f | 927 | |
324ae4df | 928 | u64 total_pinned; |
b9473439 | 929 | |
e2d84521 MX |
930 | /* used to keep from writing metadata until there is a nice batch */ |
931 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 932 | struct percpu_counter delalloc_bytes; |
e2d84521 | 933 | s32 dirty_metadata_batch; |
963d678b MX |
934 | s32 delalloc_batch; |
935 | ||
0b86a832 CM |
936 | struct list_head dirty_cowonly_roots; |
937 | ||
8a4b83cc | 938 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
939 | |
940 | /* | |
941 | * the space_info list is almost entirely read only. It only changes | |
942 | * when we add a new raid type to the FS, and that happens | |
943 | * very rarely. RCU is used to protect it. | |
944 | */ | |
6324fbf3 | 945 | struct list_head space_info; |
4184ea7f | 946 | |
b4d7c3c9 LZ |
947 | struct btrfs_space_info *data_sinfo; |
948 | ||
5d4f98a2 YZ |
949 | struct reloc_control *reloc_ctl; |
950 | ||
fa9c0d79 CM |
951 | /* data_alloc_cluster is only used in ssd mode */ |
952 | struct btrfs_free_cluster data_alloc_cluster; | |
953 | ||
954 | /* all metadata allocations go through this cluster */ | |
955 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 956 | |
4cb5300b CM |
957 | /* auto defrag inodes go here */ |
958 | spinlock_t defrag_inodes_lock; | |
959 | struct rb_root defrag_inodes; | |
960 | atomic_t defrag_running; | |
961 | ||
de98ced9 MX |
962 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
963 | seqlock_t profiles_lock; | |
a46d11a8 ID |
964 | /* |
965 | * these three are in extended format (availability of single | |
966 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
967 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
968 | */ | |
d18a2c44 CM |
969 | u64 avail_data_alloc_bits; |
970 | u64 avail_metadata_alloc_bits; | |
971 | u64 avail_system_alloc_bits; | |
788f20eb | 972 | |
c9e9f97b ID |
973 | /* restriper state */ |
974 | spinlock_t balance_lock; | |
975 | struct mutex balance_mutex; | |
837d5b6e ID |
976 | atomic_t balance_running; |
977 | atomic_t balance_pause_req; | |
a7e99c69 | 978 | atomic_t balance_cancel_req; |
c9e9f97b | 979 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 980 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 981 | |
97e728d4 JB |
982 | unsigned data_chunk_allocations; |
983 | unsigned metadata_ratio; | |
984 | ||
788f20eb | 985 | void *bdev_holder; |
acce952b | 986 | |
a2de733c AJ |
987 | /* private scrub information */ |
988 | struct mutex scrub_lock; | |
989 | atomic_t scrubs_running; | |
990 | atomic_t scrub_pause_req; | |
991 | atomic_t scrubs_paused; | |
992 | atomic_t scrub_cancel_req; | |
993 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 994 | int scrub_workers_refcnt; |
d458b054 QW |
995 | struct btrfs_workqueue *scrub_workers; |
996 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
997 | struct btrfs_workqueue *scrub_nocow_workers; | |
20b2e302 | 998 | struct btrfs_workqueue *scrub_parity_workers; |
a2de733c | 999 | |
21adbd5c SB |
1000 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1001 | u32 check_integrity_print_mask; | |
1002 | #endif | |
416ac51d AJ |
1003 | /* is qgroup tracking in a consistent state? */ |
1004 | u64 qgroup_flags; | |
1005 | ||
1006 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1007 | struct rb_root qgroup_tree; | |
fcebe456 | 1008 | struct rb_root qgroup_op_tree; |
416ac51d | 1009 | spinlock_t qgroup_lock; |
fcebe456 JB |
1010 | spinlock_t qgroup_op_lock; |
1011 | atomic_t qgroup_op_seq; | |
416ac51d | 1012 | |
1e8f9158 WS |
1013 | /* |
1014 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1015 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1016 | */ | |
1017 | struct ulist *qgroup_ulist; | |
1018 | ||
f2f6ed3d WS |
1019 | /* protect user change for quota operations */ |
1020 | struct mutex qgroup_ioctl_lock; | |
1021 | ||
416ac51d AJ |
1022 | /* list of dirty qgroups to be written at next commit */ |
1023 | struct list_head dirty_qgroups; | |
1024 | ||
e69bcee3 | 1025 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 1026 | u64 qgroup_seq; |
21adbd5c | 1027 | |
2f232036 JS |
1028 | /* qgroup rescan items */ |
1029 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1030 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1031 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1032 | struct completion qgroup_rescan_completion; |
b382a324 | 1033 | struct btrfs_work qgroup_rescan_work; |
d2c609b8 | 1034 | bool qgroup_rescan_running; /* protected by qgroup_rescan_lock */ |
2f232036 | 1035 | |
acce952b | 1036 | /* filesystem state */ |
87533c47 | 1037 | unsigned long fs_state; |
16cdcec7 MX |
1038 | |
1039 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1040 | |
90519d66 AJ |
1041 | /* readahead tree */ |
1042 | spinlock_t reada_lock; | |
1043 | struct radix_tree_root reada_tree; | |
531f4b1a | 1044 | |
2fefd558 ZL |
1045 | /* readahead works cnt */ |
1046 | atomic_t reada_works_cnt; | |
1047 | ||
f28491e0 JB |
1048 | /* Extent buffer radix tree */ |
1049 | spinlock_t buffer_lock; | |
1050 | struct radix_tree_root buffer_radix; | |
1051 | ||
af31f5e5 CM |
1052 | /* next backup root to be overwritten */ |
1053 | int backup_root_index; | |
5af3e8cc SB |
1054 | |
1055 | int num_tolerated_disk_barrier_failures; | |
e922e087 SB |
1056 | |
1057 | /* device replace state */ | |
1058 | struct btrfs_dev_replace dev_replace; | |
5ac00add SB |
1059 | |
1060 | atomic_t mutually_exclusive_operation_running; | |
803b2f54 | 1061 | |
c404e0dc MX |
1062 | struct percpu_counter bio_counter; |
1063 | wait_queue_head_t replace_wait; | |
1064 | ||
803b2f54 | 1065 | struct semaphore uuid_tree_rescan_sem; |
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 | 1083 | |
9e7cc91a WX |
1084 | /* Used to record internally whether fs has been frozen */ |
1085 | int fs_frozen; | |
324ae4df | 1086 | }; |
0b86a832 | 1087 | |
8257b2dc MX |
1088 | struct btrfs_subvolume_writers { |
1089 | struct percpu_counter counter; | |
1090 | wait_queue_head_t wait; | |
1091 | }; | |
1092 | ||
27cdeb70 MX |
1093 | /* |
1094 | * The state of btrfs root | |
1095 | */ | |
1096 | /* | |
1097 | * btrfs_record_root_in_trans is a multi-step process, | |
1098 | * and it can race with the balancing code. But the | |
1099 | * race is very small, and only the first time the root | |
1100 | * is added to each transaction. So IN_TRANS_SETUP | |
1101 | * is used to tell us when more checks are required | |
1102 | */ | |
1103 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 | |
1104 | #define BTRFS_ROOT_REF_COWS 1 | |
1105 | #define BTRFS_ROOT_TRACK_DIRTY 2 | |
1106 | #define BTRFS_ROOT_IN_RADIX 3 | |
f5ee5c9a JM |
1107 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 4 |
1108 | #define BTRFS_ROOT_DEFRAG_RUNNING 5 | |
1109 | #define BTRFS_ROOT_FORCE_COW 6 | |
1110 | #define BTRFS_ROOT_MULTI_LOG_TASKS 7 | |
1111 | #define BTRFS_ROOT_DIRTY 8 | |
27cdeb70 | 1112 | |
9f5fae2f CM |
1113 | /* |
1114 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1115 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1116 | */ |
1117 | struct btrfs_root { | |
5f39d397 | 1118 | struct extent_buffer *node; |
925baedd | 1119 | |
5f39d397 | 1120 | struct extent_buffer *commit_root; |
e02119d5 | 1121 | struct btrfs_root *log_root; |
1a40e23b | 1122 | struct btrfs_root *reloc_root; |
31153d81 | 1123 | |
27cdeb70 | 1124 | unsigned long state; |
62e2749e CM |
1125 | struct btrfs_root_item root_item; |
1126 | struct btrfs_key root_key; | |
9f5fae2f | 1127 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1128 | struct extent_io_tree dirty_log_pages; |
1129 | ||
a2135011 | 1130 | struct mutex objectid_mutex; |
7237f183 | 1131 | |
f0486c68 YZ |
1132 | spinlock_t accounting_lock; |
1133 | struct btrfs_block_rsv *block_rsv; | |
1134 | ||
581bb050 | 1135 | /* free ino cache stuff */ |
581bb050 | 1136 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1137 | enum btrfs_caching_type ino_cache_state; |
1138 | spinlock_t ino_cache_lock; | |
1139 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1140 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1141 | u64 ino_cache_progress; |
1142 | struct inode *ino_cache_inode; | |
581bb050 | 1143 | |
e02119d5 | 1144 | struct mutex log_mutex; |
7237f183 YZ |
1145 | wait_queue_head_t log_writer_wait; |
1146 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1147 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1148 | atomic_t log_writers; |
1149 | atomic_t log_commit[2]; | |
2ecb7923 | 1150 | atomic_t log_batch; |
bb14a59b | 1151 | int log_transid; |
d1433deb MX |
1152 | /* No matter the commit succeeds or not*/ |
1153 | int log_transid_committed; | |
1154 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1155 | int last_log_commit; |
ff782e0a | 1156 | pid_t log_start_pid; |
ea8c2819 | 1157 | |
0f7d52f4 CM |
1158 | u64 objectid; |
1159 | u64 last_trans; | |
5f39d397 CM |
1160 | |
1161 | /* data allocations are done in sectorsize units */ | |
1162 | u32 sectorsize; | |
1163 | ||
1164 | /* node allocations are done in nodesize units */ | |
1165 | u32 nodesize; | |
1166 | ||
87ee04eb CM |
1167 | u32 stripesize; |
1168 | ||
9f5fae2f | 1169 | u32 type; |
13a8a7c8 YZ |
1170 | |
1171 | u64 highest_objectid; | |
7585717f | 1172 | |
05653ef3 | 1173 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
0d4cf4e6 | 1174 | /* only used with CONFIG_BTRFS_FS_RUN_SANITY_TESTS is enabled */ |
faa2dbf0 | 1175 | u64 alloc_bytenr; |
05653ef3 | 1176 | #endif |
faa2dbf0 | 1177 | |
3f157a2f | 1178 | u64 defrag_trans_start; |
6702ed49 | 1179 | struct btrfs_key defrag_progress; |
0ef3e66b | 1180 | struct btrfs_key defrag_max; |
58176a96 | 1181 | char *name; |
0b86a832 CM |
1182 | |
1183 | /* the dirty list is only used by non-reference counted roots */ | |
1184 | struct list_head dirty_list; | |
7b128766 | 1185 | |
5d4f98a2 YZ |
1186 | struct list_head root_list; |
1187 | ||
2ab28f32 JB |
1188 | spinlock_t log_extents_lock[2]; |
1189 | struct list_head logged_list[2]; | |
1190 | ||
d68fc57b | 1191 | spinlock_t orphan_lock; |
8a35d95f | 1192 | atomic_t orphan_inodes; |
d68fc57b | 1193 | struct btrfs_block_rsv *orphan_block_rsv; |
d68fc57b | 1194 | int orphan_cleanup_state; |
3394e160 | 1195 | |
5d4f98a2 YZ |
1196 | spinlock_t inode_lock; |
1197 | /* red-black tree that keeps track of in-memory inodes */ | |
1198 | struct rb_root inode_tree; | |
1199 | ||
16cdcec7 MX |
1200 | /* |
1201 | * radix tree that keeps track of delayed nodes of every inode, | |
1202 | * protected by inode_lock | |
1203 | */ | |
1204 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1205 | /* |
1206 | * right now this just gets used so that a root has its own devid | |
1207 | * for stat. It may be used for more later | |
1208 | */ | |
0ee5dc67 | 1209 | dev_t anon_dev; |
f1ebcc74 | 1210 | |
5f3ab90a | 1211 | spinlock_t root_item_lock; |
b0feb9d9 | 1212 | atomic_t refs; |
eb73c1b7 | 1213 | |
573bfb72 | 1214 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1215 | spinlock_t delalloc_lock; |
1216 | /* | |
1217 | * all of the inodes that have delalloc bytes. It is possible for | |
1218 | * this list to be empty even when there is still dirty data=ordered | |
1219 | * extents waiting to finish IO. | |
1220 | */ | |
1221 | struct list_head delalloc_inodes; | |
1222 | struct list_head delalloc_root; | |
1223 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1224 | |
1225 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1226 | /* |
1227 | * this is used by the balancing code to wait for all the pending | |
1228 | * ordered extents | |
1229 | */ | |
1230 | spinlock_t ordered_extent_lock; | |
1231 | ||
1232 | /* | |
1233 | * all of the data=ordered extents pending writeback | |
1234 | * these can span multiple transactions and basically include | |
1235 | * every dirty data page that isn't from nodatacow | |
1236 | */ | |
1237 | struct list_head ordered_extents; | |
1238 | struct list_head ordered_root; | |
1239 | u64 nr_ordered_extents; | |
2c686537 DS |
1240 | |
1241 | /* | |
1242 | * Number of currently running SEND ioctls to prevent | |
1243 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1244 | */ | |
1245 | int send_in_progress; | |
8257b2dc MX |
1246 | struct btrfs_subvolume_writers *subv_writers; |
1247 | atomic_t will_be_snapshoted; | |
55eeaf05 QW |
1248 | |
1249 | /* For qgroup metadata space reserve */ | |
1250 | atomic_t qgroup_meta_rsv; | |
62e2749e CM |
1251 | }; |
1252 | ||
1db1ff92 JM |
1253 | static inline u32 __BTRFS_LEAF_DATA_SIZE(u32 blocksize) |
1254 | { | |
1255 | return blocksize - sizeof(struct btrfs_header); | |
1256 | } | |
1257 | ||
1258 | static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_root *root) | |
1259 | { | |
1260 | return __BTRFS_LEAF_DATA_SIZE(root->nodesize); | |
1261 | } | |
1262 | ||
1263 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_root *root) | |
1264 | { | |
1265 | return BTRFS_LEAF_DATA_SIZE(root) - sizeof(struct btrfs_item); | |
1266 | } | |
1267 | ||
1268 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_root *root) | |
1269 | { | |
1270 | return BTRFS_LEAF_DATA_SIZE(root) / sizeof(struct btrfs_key_ptr); | |
1271 | } | |
1272 | ||
1273 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ | |
1274 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
1275 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_root *root) | |
1276 | { | |
1277 | return BTRFS_MAX_ITEM_SIZE(root) - | |
1278 | BTRFS_FILE_EXTENT_INLINE_DATA_START; | |
1279 | } | |
1280 | ||
1281 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_root *root) | |
1282 | { | |
1283 | return BTRFS_MAX_ITEM_SIZE(root) - sizeof(struct btrfs_dir_item); | |
1284 | } | |
1285 | ||
0942caa3 DS |
1286 | /* |
1287 | * Flags for mount options. | |
1288 | * | |
1289 | * Note: don't forget to add new options to btrfs_show_options() | |
1290 | */ | |
21ad10cf CM |
1291 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1292 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1293 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1294 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1295 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1296 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1297 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1298 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1299 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1300 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1301 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1302 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1303 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1304 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1305 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1306 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1307 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1308 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
8dcddfa0 | 1309 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
9555c6c1 | 1310 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1311 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1312 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1313 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 1314 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
d0bd4560 JB |
1315 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
1316 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) | |
f7d3d2f9 | 1317 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
96da0919 | 1318 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
b6cda9bc | 1319 | |
8b87dc17 | 1320 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1321 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1322 | |
b6cda9bc CM |
1323 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1324 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1325 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
3cdde224 | 1326 | #define btrfs_test_opt(fs_info, opt) ((fs_info)->mount_opt & \ |
b6cda9bc | 1327 | BTRFS_MOUNT_##opt) |
572d9ab7 | 1328 | |
3cdde224 | 1329 | #define btrfs_set_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1330 | { \ |
3cdde224 JM |
1331 | if (!btrfs_test_opt(fs_info, opt)) \ |
1332 | btrfs_info(fs_info, fmt, ##args); \ | |
1333 | btrfs_set_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1334 | } |
1335 | ||
3cdde224 | 1336 | #define btrfs_clear_and_info(fs_info, opt, fmt, args...) \ |
9d89ce65 | 1337 | { \ |
3cdde224 JM |
1338 | if (btrfs_test_opt(fs_info, opt)) \ |
1339 | btrfs_info(fs_info, fmt, ##args); \ | |
1340 | btrfs_clear_opt(fs_info->mount_opt, opt); \ | |
9d89ce65 WS |
1341 | } |
1342 | ||
d0bd4560 JB |
1343 | #ifdef CONFIG_BTRFS_DEBUG |
1344 | static inline int | |
1345 | btrfs_should_fragment_free_space(struct btrfs_root *root, | |
1346 | struct btrfs_block_group_cache *block_group) | |
1347 | { | |
3cdde224 | 1348 | return (btrfs_test_opt(root->fs_info, FRAGMENT_METADATA) && |
d0bd4560 | 1349 | block_group->flags & BTRFS_BLOCK_GROUP_METADATA) || |
3cdde224 | 1350 | (btrfs_test_opt(root->fs_info, FRAGMENT_DATA) && |
d0bd4560 JB |
1351 | block_group->flags & BTRFS_BLOCK_GROUP_DATA); |
1352 | } | |
1353 | #endif | |
1354 | ||
572d9ab7 DS |
1355 | /* |
1356 | * Requests for changes that need to be done during transaction commit. | |
1357 | * | |
1358 | * Internal mount options that are used for special handling of the real | |
1359 | * mount options (eg. cannot be set during remount and have to be set during | |
1360 | * transaction commit) | |
1361 | */ | |
1362 | ||
7e1876ac DS |
1363 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
1364 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) | |
d51033d0 | 1365 | #define BTRFS_PENDING_COMMIT (2) |
7e1876ac | 1366 | |
572d9ab7 DS |
1367 | #define btrfs_test_pending(info, opt) \ |
1368 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1369 | #define btrfs_set_pending(info, opt) \ | |
1370 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1371 | #define btrfs_clear_pending(info, opt) \ | |
1372 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1373 | ||
1374 | /* | |
1375 | * Helpers for setting pending mount option changes. | |
1376 | * | |
1377 | * Expects corresponding macros | |
1378 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1379 | */ | |
1380 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1381 | do { \ | |
1382 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1383 | btrfs_info((info), fmt, ##args); \ | |
1384 | btrfs_set_pending((info), SET_##opt); \ | |
1385 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1386 | } \ | |
1387 | } while(0) | |
1388 | ||
1389 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1390 | do { \ | |
1391 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1392 | btrfs_info((info), fmt, ##args); \ | |
1393 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1394 | btrfs_clear_pending((info), SET_##opt); \ | |
1395 | } \ | |
1396 | } while(0) | |
1397 | ||
b98b6767 Y |
1398 | /* |
1399 | * Inode flags | |
1400 | */ | |
fdebe2bd Y |
1401 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1402 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1403 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1404 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1405 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1406 | #define BTRFS_INODE_SYNC (1 << 5) |
1407 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1408 | #define BTRFS_INODE_APPEND (1 << 7) | |
1409 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1410 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1411 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1412 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1413 | |
08fe4db1 LZ |
1414 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1415 | ||
cfed81a0 CM |
1416 | struct btrfs_map_token { |
1417 | struct extent_buffer *eb; | |
1418 | char *kaddr; | |
1419 | unsigned long offset; | |
1420 | }; | |
1421 | ||
2e78c927 CR |
1422 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
1423 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) | |
1424 | ||
cfed81a0 CM |
1425 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
1426 | { | |
ad914559 | 1427 | token->kaddr = NULL; |
cfed81a0 CM |
1428 | } |
1429 | ||
01327610 | 1430 | /* some macros to generate set/get functions for the struct fields. This |
5f39d397 CM |
1431 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple |
1432 | * one for u8: | |
1433 | */ | |
1434 | #define le8_to_cpu(v) (v) | |
1435 | #define cpu_to_le8(v) (v) | |
1436 | #define __le8 u8 | |
1437 | ||
62e85577 | 1438 | #define read_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1439 | read_extent_buffer(eb, (char *)(result), \ |
1440 | ((unsigned long)(ptr)) + \ | |
1441 | offsetof(type, member), \ | |
1442 | sizeof(((type *)0)->member))) | |
1443 | ||
62e85577 | 1444 | #define write_eb_member(eb, ptr, type, member, result) (\ |
5f39d397 CM |
1445 | write_extent_buffer(eb, (char *)(result), \ |
1446 | ((unsigned long)(ptr)) + \ | |
1447 | offsetof(type, member), \ | |
1448 | sizeof(((type *)0)->member))) | |
1449 | ||
18077bb4 LZ |
1450 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1451 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1452 | unsigned long off, \ | |
1453 | struct btrfs_map_token *token); \ | |
1454 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1455 | unsigned long off, u##bits val, \ | |
1456 | struct btrfs_map_token *token); \ | |
1457 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ | |
1458 | unsigned long off) \ | |
1459 | { \ | |
1460 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1461 | } \ | |
1462 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ | |
1463 | unsigned long off, u##bits val) \ | |
1464 | { \ | |
1465 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1466 | } | |
1467 | ||
1468 | DECLARE_BTRFS_SETGET_BITS(8) | |
1469 | DECLARE_BTRFS_SETGET_BITS(16) | |
1470 | DECLARE_BTRFS_SETGET_BITS(32) | |
1471 | DECLARE_BTRFS_SETGET_BITS(64) | |
1472 | ||
5f39d397 | 1473 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
18077bb4 LZ |
1474 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
1475 | { \ | |
1476 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1477 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1478 | } \ | |
1479 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1480 | u##bits val) \ | |
1481 | { \ | |
1482 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1483 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1484 | } \ | |
1485 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ | |
1486 | struct btrfs_map_token *token) \ | |
1487 | { \ | |
1488 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1489 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1490 | } \ | |
1491 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
1492 | type *s, u##bits val, \ | |
1493 | struct btrfs_map_token *token) \ | |
1494 | { \ | |
1495 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1496 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
1497 | } | |
5f39d397 CM |
1498 | |
1499 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1500 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1501 | { \ | |
727011e0 | 1502 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1503 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1504 | return res; \ |
5f39d397 CM |
1505 | } \ |
1506 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1507 | u##bits val) \ | |
1508 | { \ | |
727011e0 | 1509 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1510 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1511 | } |
9078a3e1 | 1512 | |
5f39d397 CM |
1513 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1514 | static inline u##bits btrfs_##name(type *s) \ | |
1515 | { \ | |
1516 | return le##bits##_to_cpu(s->member); \ | |
1517 | } \ | |
1518 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1519 | { \ | |
1520 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1521 | } |
1522 | ||
0b86a832 CM |
1523 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1524 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1525 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1526 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1527 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1528 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1529 | start_offset, 64); | |
0b86a832 CM |
1530 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1531 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1532 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1533 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1534 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1535 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1536 | |
8a4b83cc CM |
1537 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1538 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1539 | total_bytes, 64); | |
1540 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1541 | bytes_used, 64); | |
1542 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1543 | io_align, 32); | |
1544 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1545 | io_width, 32); | |
1546 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1547 | sector_size, 32); | |
1548 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1549 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1550 | dev_group, 32); | |
1551 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1552 | seek_speed, 8); | |
1553 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1554 | bandwidth, 8); | |
2b82032c YZ |
1555 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1556 | generation, 64); | |
8a4b83cc | 1557 | |
410ba3a2 | 1558 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1559 | { |
410ba3a2 | 1560 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1561 | } |
1562 | ||
1473b24e | 1563 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1564 | { |
1473b24e | 1565 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1566 | } |
1567 | ||
e17cade2 | 1568 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1569 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1570 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1571 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1572 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1573 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1574 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1575 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1576 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1577 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1578 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1579 | ||
e17cade2 CM |
1580 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1581 | { | |
1582 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1583 | } | |
1584 | ||
1585 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1586 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1587 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1588 | stripe_len, 64); | |
1589 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1590 | io_align, 32); | |
1591 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1592 | io_width, 32); | |
1593 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1594 | sector_size, 32); | |
1595 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1596 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1597 | num_stripes, 16); | |
321aecc6 CM |
1598 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1599 | sub_stripes, 16); | |
0b86a832 CM |
1600 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1601 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1602 | ||
1603 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1604 | int nr) | |
1605 | { | |
1606 | unsigned long offset = (unsigned long)c; | |
1607 | offset += offsetof(struct btrfs_chunk, stripe); | |
1608 | offset += nr * sizeof(struct btrfs_stripe); | |
1609 | return (struct btrfs_stripe *)offset; | |
1610 | } | |
1611 | ||
a443755f CM |
1612 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1613 | { | |
1614 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1615 | } | |
1616 | ||
0b86a832 CM |
1617 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1618 | struct btrfs_chunk *c, int nr) | |
1619 | { | |
1620 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1621 | } | |
1622 | ||
0b86a832 CM |
1623 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1624 | struct btrfs_chunk *c, int nr) | |
1625 | { | |
1626 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1627 | } | |
1628 | ||
5f39d397 CM |
1629 | /* struct btrfs_block_group_item */ |
1630 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1631 | used, 64); | |
1632 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1633 | used, 64); | |
0b86a832 CM |
1634 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1635 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1636 | |
1637 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1638 | struct btrfs_block_group_item, chunk_objectid, 64); |
1639 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1640 | struct btrfs_block_group_item, flags, 64); | |
1641 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1642 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1643 | |
208acb8c OS |
1644 | /* struct btrfs_free_space_info */ |
1645 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1646 | extent_count, 32); | |
1647 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1648 | ||
3954401f CM |
1649 | /* struct btrfs_inode_ref */ |
1650 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1651 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1652 | |
f186373f MF |
1653 | /* struct btrfs_inode_extref */ |
1654 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1655 | parent_objectid, 64); | |
1656 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1657 | name_len, 16); | |
1658 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1659 | ||
5f39d397 CM |
1660 | /* struct btrfs_inode_item */ |
1661 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1662 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1663 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1664 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1665 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1666 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1667 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1668 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1669 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1670 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1671 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1672 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1673 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1674 | generation, 64); | |
1675 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1676 | sequence, 64); | |
1677 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1678 | transid, 64); | |
1679 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1680 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1681 | nbytes, 64); | |
1682 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1683 | block_group, 64); | |
1684 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1685 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1686 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1687 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1688 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1689 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1690 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1691 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1692 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1693 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1694 | |
0b86a832 | 1695 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1696 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1697 | chunk_tree, 64); | |
1698 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1699 | chunk_objectid, 64); | |
1700 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1701 | chunk_offset, 64); | |
0b86a832 CM |
1702 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1703 | ||
231e88f4 | 1704 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
1705 | { |
1706 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 1707 | return (unsigned long)dev + ptr; |
e17cade2 CM |
1708 | } |
1709 | ||
5d4f98a2 YZ |
1710 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1711 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1712 | generation, 64); | |
1713 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1714 | |
5d4f98a2 YZ |
1715 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1716 | ||
1717 | ||
1718 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1719 | ||
1720 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1721 | struct btrfs_tree_block_info *item, | |
1722 | struct btrfs_disk_key *key) | |
1723 | { | |
1724 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1725 | } | |
1726 | ||
1727 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1728 | struct btrfs_tree_block_info *item, | |
1729 | struct btrfs_disk_key *key) | |
1730 | { | |
1731 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1732 | } | |
e20d96d6 | 1733 | |
5d4f98a2 YZ |
1734 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1735 | root, 64); | |
1736 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1737 | objectid, 64); | |
1738 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1739 | offset, 64); | |
1740 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1741 | count, 32); | |
1742 | ||
1743 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1744 | count, 32); | |
1745 | ||
1746 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1747 | type, 8); | |
1748 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1749 | offset, 64); | |
1750 | ||
1751 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1752 | { | |
1753 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1754 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1755 | return sizeof(struct btrfs_extent_inline_ref); | |
1756 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1757 | return sizeof(struct btrfs_shared_data_ref) + | |
1758 | sizeof(struct btrfs_extent_inline_ref); | |
1759 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1760 | return sizeof(struct btrfs_extent_data_ref) + | |
1761 | offsetof(struct btrfs_extent_inline_ref, offset); | |
1762 | BUG(); | |
1763 | return 0; | |
1764 | } | |
1765 | ||
1766 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1767 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1768 | generation, 64); | |
1769 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1770 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1771 | |
5f39d397 CM |
1772 | /* struct btrfs_node */ |
1773 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1774 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
1775 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
1776 | blockptr, 64); | |
1777 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
1778 | generation, 64); | |
e20d96d6 | 1779 | |
5f39d397 | 1780 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1781 | { |
5f39d397 CM |
1782 | unsigned long ptr; |
1783 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1784 | sizeof(struct btrfs_key_ptr) * nr; | |
1785 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1786 | } |
1787 | ||
5f39d397 CM |
1788 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1789 | int nr, u64 val) | |
cf27e1ee | 1790 | { |
5f39d397 CM |
1791 | unsigned long ptr; |
1792 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1793 | sizeof(struct btrfs_key_ptr) * nr; | |
1794 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1795 | } |
1796 | ||
74493f7a CM |
1797 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1798 | { | |
1799 | unsigned long ptr; | |
1800 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1801 | sizeof(struct btrfs_key_ptr) * nr; | |
1802 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1803 | } | |
1804 | ||
1805 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1806 | int nr, u64 val) | |
1807 | { | |
1808 | unsigned long ptr; | |
1809 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1810 | sizeof(struct btrfs_key_ptr) * nr; | |
1811 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1812 | } | |
1813 | ||
810191ff | 1814 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1815 | { |
5f39d397 CM |
1816 | return offsetof(struct btrfs_node, ptrs) + |
1817 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1818 | } |
1819 | ||
e644d021 CM |
1820 | void btrfs_node_key(struct extent_buffer *eb, |
1821 | struct btrfs_disk_key *disk_key, int nr); | |
1822 | ||
5f39d397 CM |
1823 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1824 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1825 | { |
5f39d397 CM |
1826 | unsigned long ptr; |
1827 | ptr = btrfs_node_key_ptr_offset(nr); | |
1828 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1829 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1830 | } |
1831 | ||
5f39d397 CM |
1832 | /* struct btrfs_item */ |
1833 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1834 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
1835 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
1836 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 1837 | |
5f39d397 | 1838 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1839 | { |
5f39d397 CM |
1840 | return offsetof(struct btrfs_leaf, items) + |
1841 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1842 | } |
1843 | ||
dd3cc16b | 1844 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 1845 | { |
5f39d397 | 1846 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1847 | } |
1848 | ||
5f39d397 CM |
1849 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1850 | struct btrfs_item *item) | |
0783fcfc | 1851 | { |
5f39d397 | 1852 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1853 | } |
1854 | ||
5f39d397 | 1855 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1856 | { |
dd3cc16b | 1857 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1858 | } |
1859 | ||
5f39d397 | 1860 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1861 | { |
dd3cc16b | 1862 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1863 | } |
1864 | ||
5f39d397 | 1865 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1866 | { |
dd3cc16b | 1867 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1868 | } |
1869 | ||
5f39d397 CM |
1870 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1871 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1872 | { |
dd3cc16b | 1873 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1874 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1875 | } |
1876 | ||
5f39d397 CM |
1877 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1878 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1879 | { |
dd3cc16b | 1880 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1881 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1882 | } |
1883 | ||
e02119d5 CM |
1884 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1885 | ||
0660b5af CM |
1886 | /* |
1887 | * struct btrfs_root_ref | |
1888 | */ | |
1889 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1890 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1891 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1892 | ||
5f39d397 | 1893 | /* struct btrfs_dir_item */ |
5103e947 | 1894 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1895 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1896 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1897 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
1898 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
1899 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
1900 | data_len, 16); | |
1901 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
1902 | name_len, 16); | |
1903 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
1904 | transid, 64); | |
1d4f6404 | 1905 | |
5f39d397 CM |
1906 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1907 | struct btrfs_dir_item *item, | |
1908 | struct btrfs_disk_key *key) | |
1d4f6404 | 1909 | { |
5f39d397 | 1910 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1911 | } |
1912 | ||
5f39d397 CM |
1913 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1914 | struct btrfs_dir_item *item, | |
1915 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1916 | { |
5f39d397 | 1917 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1918 | } |
1919 | ||
0af3d00b JB |
1920 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1921 | num_entries, 64); | |
1922 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1923 | num_bitmaps, 64); | |
1924 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1925 | generation, 64); | |
1926 | ||
1927 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
1928 | struct btrfs_free_space_header *h, | |
1929 | struct btrfs_disk_key *key) | |
1930 | { | |
1931 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1932 | } | |
1933 | ||
1934 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1935 | struct btrfs_free_space_header *h, | |
1936 | struct btrfs_disk_key *key) | |
1937 | { | |
1938 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1939 | } | |
1940 | ||
5f39d397 CM |
1941 | /* struct btrfs_disk_key */ |
1942 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1943 | objectid, 64); | |
1944 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1945 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1946 | |
e2fa7227 CM |
1947 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1948 | struct btrfs_disk_key *disk) | |
1949 | { | |
1950 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1951 | cpu->type = disk->type; |
e2fa7227 CM |
1952 | cpu->objectid = le64_to_cpu(disk->objectid); |
1953 | } | |
1954 | ||
1955 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1956 | struct btrfs_key *cpu) | |
1957 | { | |
1958 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1959 | disk->type = cpu->type; |
e2fa7227 CM |
1960 | disk->objectid = cpu_to_le64(cpu->objectid); |
1961 | } | |
1962 | ||
5f39d397 CM |
1963 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1964 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1965 | { |
5f39d397 CM |
1966 | struct btrfs_disk_key disk_key; |
1967 | btrfs_node_key(eb, &disk_key, nr); | |
1968 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1969 | } |
1970 | ||
5f39d397 CM |
1971 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1972 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1973 | { |
5f39d397 CM |
1974 | struct btrfs_disk_key disk_key; |
1975 | btrfs_item_key(eb, &disk_key, nr); | |
1976 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1977 | } |
1978 | ||
5f39d397 CM |
1979 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1980 | struct btrfs_dir_item *item, | |
1981 | struct btrfs_key *key) | |
4d775673 | 1982 | { |
5f39d397 CM |
1983 | struct btrfs_disk_key disk_key; |
1984 | btrfs_dir_item_key(eb, item, &disk_key); | |
1985 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1986 | } |
1987 | ||
58176a96 | 1988 | |
5f39d397 | 1989 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1990 | { |
5f39d397 | 1991 | return key->type; |
3768f368 CM |
1992 | } |
1993 | ||
5f39d397 | 1994 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1995 | { |
5f39d397 | 1996 | key->type = val; |
3768f368 CM |
1997 | } |
1998 | ||
5f39d397 | 1999 | /* struct btrfs_header */ |
db94535d | 2000 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2001 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2002 | generation, 64); | |
2003 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2004 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2005 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2006 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2007 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2008 | generation, 64); | |
2009 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2010 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2011 | nritems, 32); | |
2012 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2013 | |
63b10fc4 CM |
2014 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
2015 | { | |
2016 | return (btrfs_header_flags(eb) & flag) == flag; | |
2017 | } | |
2018 | ||
2019 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2020 | { | |
2021 | u64 flags = btrfs_header_flags(eb); | |
2022 | btrfs_set_header_flags(eb, flags | flag); | |
2023 | return (flags & flag) == flag; | |
2024 | } | |
2025 | ||
2026 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2027 | { | |
2028 | u64 flags = btrfs_header_flags(eb); | |
2029 | btrfs_set_header_flags(eb, flags & ~flag); | |
2030 | return (flags & flag) == flag; | |
2031 | } | |
2032 | ||
5d4f98a2 YZ |
2033 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2034 | { | |
2035 | u64 flags = btrfs_header_flags(eb); | |
2036 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2037 | } | |
2038 | ||
2039 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2040 | int rev) | |
2041 | { | |
2042 | u64 flags = btrfs_header_flags(eb); | |
2043 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2044 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2045 | btrfs_set_header_flags(eb, flags); | |
2046 | } | |
2047 | ||
0a4e5586 | 2048 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2049 | { |
fba6aa75 | 2050 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2051 | } |
2052 | ||
b308bc2f | 2053 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
e17cade2 | 2054 | { |
b308bc2f | 2055 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2056 | } |
2057 | ||
5f39d397 | 2058 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2059 | { |
d397712b | 2060 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2061 | } |
2062 | ||
5f39d397 | 2063 | /* struct btrfs_root_item */ |
84234f3a YZ |
2064 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2065 | generation, 64); | |
5f39d397 | 2066 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2067 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2068 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2069 | |
84234f3a YZ |
2070 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2071 | generation, 64); | |
db94535d CM |
2072 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2073 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2074 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2075 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2076 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2077 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2078 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2079 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2080 | last_snapshot, 64); | |
8ea05e3a AB |
2081 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2082 | generation_v2, 64); | |
2083 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2084 | ctransid, 64); | |
2085 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2086 | otransid, 64); | |
2087 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2088 | stransid, 64); | |
2089 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2090 | rtransid, 64); | |
123abc88 | 2091 | |
b83cc969 LZ |
2092 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2093 | { | |
6ed3cf2c | 2094 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2095 | } |
2096 | ||
521e0546 DS |
2097 | static inline bool btrfs_root_dead(struct btrfs_root *root) |
2098 | { | |
2099 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2100 | } | |
2101 | ||
af31f5e5 CM |
2102 | /* struct btrfs_root_backup */ |
2103 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2104 | tree_root, 64); | |
2105 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2106 | tree_root_gen, 64); | |
2107 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2108 | tree_root_level, 8); | |
2109 | ||
2110 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2111 | chunk_root, 64); | |
2112 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2113 | chunk_root_gen, 64); | |
2114 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2115 | chunk_root_level, 8); | |
2116 | ||
2117 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2118 | extent_root, 64); | |
2119 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2120 | extent_root_gen, 64); | |
2121 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2122 | extent_root_level, 8); | |
2123 | ||
2124 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2125 | fs_root, 64); | |
2126 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2127 | fs_root_gen, 64); | |
2128 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2129 | fs_root_level, 8); | |
2130 | ||
2131 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2132 | dev_root, 64); | |
2133 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2134 | dev_root_gen, 64); | |
2135 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2136 | dev_root_level, 8); | |
2137 | ||
2138 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2139 | csum_root, 64); | |
2140 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2141 | csum_root_gen, 64); | |
2142 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2143 | csum_root_level, 8); | |
2144 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2145 | total_bytes, 64); | |
2146 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2147 | bytes_used, 64); | |
2148 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2149 | num_devices, 64); | |
2150 | ||
0940ebf6 ID |
2151 | /* struct btrfs_balance_item */ |
2152 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2153 | |
0940ebf6 ID |
2154 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2155 | struct btrfs_balance_item *bi, | |
2156 | struct btrfs_disk_balance_args *ba) | |
2157 | { | |
2158 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2159 | } | |
2160 | ||
2161 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2162 | struct btrfs_balance_item *bi, | |
2163 | struct btrfs_disk_balance_args *ba) | |
2164 | { | |
2165 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2166 | } | |
2167 | ||
2168 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2169 | struct btrfs_balance_item *bi, | |
2170 | struct btrfs_disk_balance_args *ba) | |
2171 | { | |
2172 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2173 | } | |
2174 | ||
2175 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2176 | struct btrfs_balance_item *bi, | |
2177 | struct btrfs_disk_balance_args *ba) | |
2178 | { | |
2179 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2180 | } | |
2181 | ||
2182 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2183 | struct btrfs_balance_item *bi, | |
2184 | struct btrfs_disk_balance_args *ba) | |
2185 | { | |
2186 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2187 | } | |
2188 | ||
2189 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2190 | struct btrfs_balance_item *bi, | |
2191 | struct btrfs_disk_balance_args *ba) | |
2192 | { | |
2193 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2194 | } | |
2195 | ||
2196 | static inline void | |
2197 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2198 | struct btrfs_disk_balance_args *disk) | |
2199 | { | |
2200 | memset(cpu, 0, sizeof(*cpu)); | |
2201 | ||
2202 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2203 | cpu->usage = le64_to_cpu(disk->usage); | |
2204 | cpu->devid = le64_to_cpu(disk->devid); | |
2205 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2206 | cpu->pend = le64_to_cpu(disk->pend); | |
2207 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2208 | cpu->vend = le64_to_cpu(disk->vend); | |
2209 | cpu->target = le64_to_cpu(disk->target); | |
2210 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2211 | cpu->limit = le64_to_cpu(disk->limit); |
0940ebf6 ID |
2212 | } |
2213 | ||
2214 | static inline void | |
2215 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2216 | struct btrfs_balance_args *cpu) | |
2217 | { | |
2218 | memset(disk, 0, sizeof(*disk)); | |
2219 | ||
2220 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2221 | disk->usage = cpu_to_le64(cpu->usage); | |
2222 | disk->devid = cpu_to_le64(cpu->devid); | |
2223 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2224 | disk->pend = cpu_to_le64(cpu->pend); | |
2225 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2226 | disk->vend = cpu_to_le64(cpu->vend); | |
2227 | disk->target = cpu_to_le64(cpu->target); | |
2228 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2229 | disk->limit = cpu_to_le64(cpu->limit); |
0940ebf6 ID |
2230 | } |
2231 | ||
2232 | /* struct btrfs_super_block */ | |
db94535d | 2233 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2234 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2235 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2236 | generation, 64); | |
2237 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2238 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2239 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2240 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2241 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2242 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2243 | root_level, 8); | |
0b86a832 CM |
2244 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2245 | chunk_root, 64); | |
2246 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2247 | chunk_root_level, 8); |
2248 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2249 | log_root, 64); | |
c3027eb5 CM |
2250 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2251 | log_root_transid, 64); | |
e02119d5 CM |
2252 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2253 | log_root_level, 8); | |
db94535d CM |
2254 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2255 | total_bytes, 64); | |
2256 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2257 | bytes_used, 64); | |
5f39d397 CM |
2258 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2259 | sectorsize, 32); | |
2260 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2261 | nodesize, 32); | |
87ee04eb CM |
2262 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2263 | stripesize, 32); | |
5f39d397 CM |
2264 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2265 | root_dir_objectid, 64); | |
8a4b83cc CM |
2266 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2267 | num_devices, 64); | |
f2b636e8 JB |
2268 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2269 | compat_flags, 64); | |
2270 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2271 | compat_ro_flags, 64); |
f2b636e8 JB |
2272 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2273 | incompat_flags, 64); | |
607d432d JB |
2274 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2275 | csum_type, 16); | |
0af3d00b JB |
2276 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2277 | cache_generation, 64); | |
3cae210f | 2278 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2279 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2280 | uuid_tree_generation, 64); | |
607d432d JB |
2281 | |
2282 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2283 | { | |
1104a885 DS |
2284 | u16 t = btrfs_super_csum_type(s); |
2285 | /* | |
2286 | * csum type is validated at mount time | |
2287 | */ | |
607d432d JB |
2288 | return btrfs_csum_sizes[t]; |
2289 | } | |
2e635a27 | 2290 | |
5f39d397 | 2291 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2292 | { |
5f39d397 | 2293 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2294 | } |
2295 | ||
5f39d397 CM |
2296 | /* struct btrfs_file_extent_item */ |
2297 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2298 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2299 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2300 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2301 | struct btrfs_file_extent_item, offset, 64); | |
2302 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2303 | struct btrfs_file_extent_item, generation, 64); | |
2304 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2305 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2306 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2307 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2308 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2309 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2310 | |
d397712b CM |
2311 | static inline unsigned long |
2312 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2313 | { |
7ec20afb | 2314 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2315 | } |
2316 | ||
2317 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2318 | { | |
7ec20afb | 2319 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2320 | } |
2321 | ||
db94535d CM |
2322 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2323 | disk_bytenr, 64); | |
5f39d397 CM |
2324 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2325 | generation, 64); | |
db94535d CM |
2326 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2327 | disk_num_bytes, 64); | |
5f39d397 CM |
2328 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2329 | offset, 64); | |
db94535d CM |
2330 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2331 | num_bytes, 64); | |
c8b97818 CM |
2332 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2333 | ram_bytes, 64); | |
2334 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2335 | compression, 8); | |
2336 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2337 | encryption, 8); | |
2338 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2339 | other_encoding, 16); | |
2340 | ||
c8b97818 CM |
2341 | /* |
2342 | * this returns the number of bytes used by the item on disk, minus the | |
2343 | * size of any extent headers. If a file is compressed on disk, this is | |
2344 | * the compressed size | |
2345 | */ | |
2346 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2347 | struct btrfs_item *e) | |
2348 | { | |
7ec20afb | 2349 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2350 | } |
9f5fae2f | 2351 | |
514ac8ad CM |
2352 | /* this returns the number of file bytes represented by the inline item. |
2353 | * If an item is compressed, this is the uncompressed size | |
2354 | */ | |
2355 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2356 | int slot, | |
2357 | struct btrfs_file_extent_item *fi) | |
2358 | { | |
2359 | struct btrfs_map_token token; | |
2360 | ||
2361 | btrfs_init_map_token(&token); | |
2362 | /* | |
2363 | * return the space used on disk if this item isn't | |
2364 | * compressed or encoded | |
2365 | */ | |
2366 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && | |
2367 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && | |
2368 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { | |
2369 | return btrfs_file_extent_inline_item_len(eb, | |
2370 | btrfs_item_nr(slot)); | |
2371 | } | |
2372 | ||
2373 | /* otherwise use the ram bytes field */ | |
2374 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); | |
2375 | } | |
2376 | ||
2377 | ||
733f4fbb SB |
2378 | /* btrfs_dev_stats_item */ |
2379 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
2380 | struct btrfs_dev_stats_item *ptr, | |
2381 | int index) | |
2382 | { | |
2383 | u64 val; | |
2384 | ||
2385 | read_extent_buffer(eb, &val, | |
2386 | offsetof(struct btrfs_dev_stats_item, values) + | |
2387 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2388 | sizeof(val)); | |
2389 | return val; | |
2390 | } | |
2391 | ||
2392 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2393 | struct btrfs_dev_stats_item *ptr, | |
2394 | int index, u64 val) | |
2395 | { | |
2396 | write_extent_buffer(eb, &val, | |
2397 | offsetof(struct btrfs_dev_stats_item, values) + | |
2398 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2399 | sizeof(val)); | |
2400 | } | |
2401 | ||
630dc772 AJ |
2402 | /* btrfs_qgroup_status_item */ |
2403 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2404 | generation, 64); | |
2405 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2406 | version, 64); | |
2407 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2408 | flags, 64); | |
2f232036 JS |
2409 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2410 | rescan, 64); | |
630dc772 AJ |
2411 | |
2412 | /* btrfs_qgroup_info_item */ | |
2413 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2414 | generation, 64); | |
2415 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2416 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2417 | rfer_cmpr, 64); | |
2418 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2419 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2420 | excl_cmpr, 64); | |
2421 | ||
2422 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2423 | struct btrfs_qgroup_info_item, generation, 64); | |
2424 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2425 | rfer, 64); | |
2426 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2427 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2428 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2429 | excl, 64); | |
2430 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2431 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2432 | ||
2433 | /* btrfs_qgroup_limit_item */ | |
2434 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2435 | flags, 64); | |
2436 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2437 | max_rfer, 64); | |
2438 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2439 | max_excl, 64); | |
2440 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2441 | rsv_rfer, 64); | |
2442 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2443 | rsv_excl, 64); | |
2444 | ||
a2bff640 SB |
2445 | /* btrfs_dev_replace_item */ |
2446 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2447 | struct btrfs_dev_replace_item, src_devid, 64); | |
2448 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2449 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2450 | 64); | |
2451 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2452 | replace_state, 64); | |
2453 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2454 | time_started, 64); | |
2455 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2456 | time_stopped, 64); | |
2457 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2458 | num_write_errors, 64); | |
2459 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2460 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2461 | 64); | |
2462 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2463 | cursor_left, 64); | |
2464 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2465 | cursor_right, 64); | |
2466 | ||
2467 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2468 | struct btrfs_dev_replace_item, src_devid, 64); | |
2469 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2470 | struct btrfs_dev_replace_item, | |
2471 | cont_reading_from_srcdev_mode, 64); | |
2472 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2473 | struct btrfs_dev_replace_item, replace_state, 64); | |
2474 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2475 | struct btrfs_dev_replace_item, time_started, 64); | |
2476 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2477 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2478 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2479 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2480 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2481 | struct btrfs_dev_replace_item, | |
2482 | num_uncorrectable_read_errors, 64); | |
2483 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2484 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2485 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2486 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2487 | ||
815745cf | 2488 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
e20d96d6 CM |
2489 | { |
2490 | return sb->s_fs_info; | |
2491 | } | |
2492 | ||
4beb1b8b CM |
2493 | /* helper function to cast into the data area of the leaf. */ |
2494 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2495 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2496 | btrfs_item_offset_nr(leaf, slot))) |
2497 | ||
2498 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2499 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2500 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2501 | |
67377734 JB |
2502 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2503 | { | |
2504 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2505 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2506 | } | |
2507 | ||
3b16a4e3 JB |
2508 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2509 | { | |
c62d2555 | 2510 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2511 | } |
2512 | ||
b18c6685 | 2513 | /* extent-tree.c */ |
28f75a0e CM |
2514 | |
2515 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_root *root, u64 csum_bytes); | |
2516 | ||
16cdcec7 | 2517 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 2518 | unsigned num_items) |
16cdcec7 | 2519 | { |
0138b6fe | 2520 | return root->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2521 | } |
2522 | ||
2523 | /* | |
2524 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2525 | * COW. | |
2526 | */ | |
2527 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, | |
2528 | unsigned num_items) | |
2529 | { | |
707e8a07 | 2530 | return root->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2531 | } |
2532 | ||
1be41b78 JB |
2533 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
2534 | struct btrfs_root *root); | |
0a2b2a84 JB |
2535 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
2536 | struct btrfs_root *root); | |
9cfa3e34 FM |
2537 | void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, |
2538 | const u64 start); | |
2539 | void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); | |
f78c436c FM |
2540 | bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
2541 | void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); | |
2542 | void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg); | |
fa9c0d79 | 2543 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
2544 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2545 | struct btrfs_root *root, unsigned long count); | |
a79b7d4b | 2546 | int btrfs_async_run_delayed_refs(struct btrfs_root *root, |
31b9655f | 2547 | unsigned long count, u64 transid, int wait); |
1a4ed8fd | 2548 | int btrfs_lookup_data_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
2549 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2550 | struct btrfs_root *root, u64 bytenr, | |
3173a18f | 2551 | u64 offset, int metadata, u64 *refs, u64 *flags); |
11833d66 YZ |
2552 | int btrfs_pin_extent(struct btrfs_root *root, |
2553 | u64 bytenr, u64 num, int reserved); | |
dcfac415 | 2554 | int btrfs_pin_extent_for_log_replay(struct btrfs_root *root, |
e688b725 | 2555 | u64 bytenr, u64 num_bytes); |
8c2a1a30 JB |
2556 | int btrfs_exclude_logged_extents(struct btrfs_root *root, |
2557 | struct extent_buffer *eb); | |
80ff3856 | 2558 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2559 | struct btrfs_root *root, |
2560 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
2561 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2562 | struct btrfs_fs_info *info, | |
2563 | u64 bytenr); | |
758f2dfc | 2564 | void btrfs_get_block_group(struct btrfs_block_group_cache *cache); |
5d4f98a2 | 2565 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
6ab0a202 | 2566 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
4d75f8a9 DS |
2567 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
2568 | struct btrfs_root *root, u64 parent, | |
2569 | u64 root_objectid, | |
5d4f98a2 | 2570 | struct btrfs_disk_key *key, int level, |
5581a51a | 2571 | u64 hint, u64 empty_size); |
f0486c68 YZ |
2572 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2573 | struct btrfs_root *root, | |
2574 | struct extent_buffer *buf, | |
5581a51a | 2575 | u64 parent, int last_ref); |
5d4f98a2 YZ |
2576 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
2577 | struct btrfs_root *root, | |
2578 | u64 root_objectid, u64 owner, | |
5846a3c2 QW |
2579 | u64 offset, u64 ram_bytes, |
2580 | struct btrfs_key *ins); | |
5d4f98a2 YZ |
2581 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
2582 | struct btrfs_root *root, | |
2583 | u64 root_objectid, u64 owner, u64 offset, | |
2584 | struct btrfs_key *ins); | |
18513091 | 2585 | int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes, |
00361589 | 2586 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, |
e570fd27 | 2587 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2588 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2589 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2590 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2591 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 YZ |
2592 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2593 | struct btrfs_root *root, | |
2594 | u64 bytenr, u64 num_bytes, u64 flags, | |
b1c79e09 | 2595 | int level, int is_data); |
31840ae1 ZY |
2596 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2597 | struct btrfs_root *root, | |
66d7e7f0 | 2598 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
b06c4bf5 | 2599 | u64 owner, u64 offset); |
5d4f98a2 | 2600 | |
e570fd27 MX |
2601 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len, |
2602 | int delalloc); | |
e688b725 CM |
2603 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
2604 | u64 start, u64 len); | |
143bede5 JM |
2605 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
2606 | struct btrfs_root *root); | |
ccd467d6 | 2607 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 2608 | struct btrfs_root *root); |
b18c6685 | 2609 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
2610 | struct btrfs_root *root, |
2611 | u64 bytenr, u64 num_bytes, u64 parent, | |
b06c4bf5 | 2612 | u64 root_objectid, u64 owner, u64 offset); |
5d4f98a2 | 2613 | |
1bbc621e CM |
2614 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans, |
2615 | struct btrfs_root *root); | |
9078a3e1 CM |
2616 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2617 | struct btrfs_root *root); | |
dcdf7f6d JB |
2618 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
2619 | struct btrfs_root *root); | |
d2fb3437 | 2620 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
2621 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
2622 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 2623 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
2624 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2625 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 2626 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2627 | u64 size); |
8eab77ff | 2628 | struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( |
7fd01182 FM |
2629 | struct btrfs_fs_info *fs_info, |
2630 | const u64 chunk_offset); | |
1a40e23b | 2631 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
04216820 FM |
2632 | struct btrfs_root *root, u64 group_start, |
2633 | struct extent_map *em); | |
47ab2a6c | 2634 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
e33e17ee JM |
2635 | void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); |
2636 | void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); | |
ea658bad JB |
2637 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
2638 | struct btrfs_root *root); | |
6d07bcec | 2639 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
4184ea7f | 2640 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
2641 | |
2642 | enum btrfs_reserve_flush_enum { | |
2643 | /* If we are in the transaction, we can't flush anything.*/ | |
2644 | BTRFS_RESERVE_NO_FLUSH, | |
2645 | /* | |
2646 | * Flushing delalloc may cause deadlock somewhere, in this | |
2647 | * case, use FLUSH LIMIT | |
2648 | */ | |
2649 | BTRFS_RESERVE_FLUSH_LIMIT, | |
2650 | BTRFS_RESERVE_FLUSH_ALL, | |
2651 | }; | |
2652 | ||
f376df2b JB |
2653 | enum btrfs_flush_state { |
2654 | FLUSH_DELAYED_ITEMS_NR = 1, | |
2655 | FLUSH_DELAYED_ITEMS = 2, | |
2656 | FLUSH_DELALLOC = 3, | |
2657 | FLUSH_DELALLOC_WAIT = 4, | |
2658 | ALLOC_CHUNK = 5, | |
2659 | COMMIT_TRANS = 6, | |
2660 | }; | |
2661 | ||
7cf5b976 | 2662 | int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len); |
4ceff079 | 2663 | int btrfs_alloc_data_chunk_ondemand(struct inode *inode, u64 bytes); |
7cf5b976 | 2664 | void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len); |
51773bec QW |
2665 | void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, |
2666 | u64 len); | |
a22285a6 YZ |
2667 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2668 | struct btrfs_root *root); | |
4fbcdf66 | 2669 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
d68fc57b YZ |
2670 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
2671 | struct inode *inode); | |
2672 | void btrfs_orphan_release_metadata(struct inode *inode); | |
d5c12070 MX |
2673 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2674 | struct btrfs_block_rsv *rsv, | |
2675 | int nitems, | |
ee3441b4 | 2676 | u64 *qgroup_reserved, bool use_global_rsv); |
d5c12070 MX |
2677 | void btrfs_subvolume_release_metadata(struct btrfs_root *root, |
2678 | struct btrfs_block_rsv *rsv, | |
2679 | u64 qgroup_reserved); | |
0ca1f7ce YZ |
2680 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
2681 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
7cf5b976 QW |
2682 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 start, u64 len); |
2683 | void btrfs_delalloc_release_space(struct inode *inode, u64 start, u64 len); | |
66d8f3dd MX |
2684 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
2685 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, | |
2686 | unsigned short type); | |
f0486c68 YZ |
2687 | void btrfs_free_block_rsv(struct btrfs_root *root, |
2688 | struct btrfs_block_rsv *rsv); | |
cdfb080e | 2689 | void __btrfs_free_block_rsv(struct btrfs_block_rsv *rsv); |
4a92b1b8 | 2690 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
2691 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
2692 | enum btrfs_reserve_flush_enum flush); | |
4a92b1b8 | 2693 | int btrfs_block_rsv_check(struct btrfs_root *root, |
36ba022a JB |
2694 | struct btrfs_block_rsv *block_rsv, int min_factor); |
2695 | int btrfs_block_rsv_refill(struct btrfs_root *root, | |
08e007d2 MX |
2696 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
2697 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 | 2698 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
25d609f8 JB |
2699 | struct btrfs_block_rsv *dst_rsv, u64 num_bytes, |
2700 | int update_size); | |
d52be818 JB |
2701 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
2702 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
2703 | int min_factor); | |
f0486c68 YZ |
2704 | void btrfs_block_rsv_release(struct btrfs_root *root, |
2705 | struct btrfs_block_rsv *block_rsv, | |
2706 | u64 num_bytes); | |
868f401a | 2707 | int btrfs_inc_block_group_ro(struct btrfs_root *root, |
f0486c68 | 2708 | struct btrfs_block_group_cache *cache); |
868f401a | 2709 | void btrfs_dec_block_group_ro(struct btrfs_root *root, |
143bede5 | 2710 | struct btrfs_block_group_cache *cache); |
0af3d00b | 2711 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2712 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 2713 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
2714 | u64 start, u64 end); | |
1edb647b FM |
2715 | int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr, |
2716 | u64 num_bytes, u64 *actual_bytes); | |
c87f08ca CM |
2717 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2718 | struct btrfs_root *root, u64 type); | |
f7039b1d | 2719 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 2720 | |
c59021f8 | 2721 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2722 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2723 | struct btrfs_fs_info *fs_info); | |
31e50229 | 2724 | int __get_raid_index(u64 flags); |
9ea24bbe FM |
2725 | int btrfs_start_write_no_snapshoting(struct btrfs_root *root); |
2726 | void btrfs_end_write_no_snapshoting(struct btrfs_root *root); | |
0bc19f90 | 2727 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
39c2d7fa FM |
2728 | void check_system_chunk(struct btrfs_trans_handle *trans, |
2729 | struct btrfs_root *root, | |
4617ea3a | 2730 | const u64 type); |
a5ed9182 OS |
2731 | u64 add_new_free_space(struct btrfs_block_group_cache *block_group, |
2732 | struct btrfs_fs_info *info, u64 start, u64 end); | |
2733 | ||
dee26a9f | 2734 | /* ctree.c */ |
5d4f98a2 YZ |
2735 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
2736 | int level, int *slot); | |
2737 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
2738 | int btrfs_previous_item(struct btrfs_root *root, |
2739 | struct btrfs_path *path, u64 min_objectid, | |
2740 | int type); | |
ade2e0b3 WS |
2741 | int btrfs_previous_extent_item(struct btrfs_root *root, |
2742 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
2743 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
2744 | struct btrfs_path *path, | |
143bede5 | 2745 | struct btrfs_key *new_key); |
925baedd CM |
2746 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2747 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2748 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 2749 | struct btrfs_key *key, int lowest_level, |
de78b51a | 2750 | u64 min_trans); |
3f157a2f | 2751 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 2752 | struct btrfs_path *path, |
3f157a2f | 2753 | u64 min_trans); |
7069830a AB |
2754 | enum btrfs_compare_tree_result { |
2755 | BTRFS_COMPARE_TREE_NEW, | |
2756 | BTRFS_COMPARE_TREE_DELETED, | |
2757 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 2758 | BTRFS_COMPARE_TREE_SAME, |
7069830a AB |
2759 | }; |
2760 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, | |
2761 | struct btrfs_root *right_root, | |
2762 | struct btrfs_path *left_path, | |
2763 | struct btrfs_path *right_path, | |
2764 | struct btrfs_key *key, | |
2765 | enum btrfs_compare_tree_result result, | |
2766 | void *ctx); | |
2767 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
2768 | struct btrfs_root *right_root, | |
2769 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
2770 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2771 | struct btrfs_root *root, struct extent_buffer *buf, | |
2772 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2773 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2774 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2775 | struct btrfs_root *root, | |
2776 | struct extent_buffer *buf, | |
2777 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2778 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2779 | struct extent_buffer *buf); | |
4b90c680 | 2780 | void btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 2781 | u32 data_size); |
afe5fea7 | 2782 | void btrfs_truncate_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 2783 | u32 new_size, int from_end); |
459931ec CM |
2784 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2785 | struct btrfs_root *root, | |
2786 | struct btrfs_path *path, | |
2787 | struct btrfs_key *new_key, | |
2788 | unsigned long split_offset); | |
ad48fd75 YZ |
2789 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2790 | struct btrfs_root *root, | |
2791 | struct btrfs_path *path, | |
2792 | struct btrfs_key *new_key); | |
e33d5c3d KN |
2793 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
2794 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
e089f05c CM |
2795 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
2796 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
2797 | ins_len, int cow); | |
5d9e75c4 JS |
2798 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
2799 | struct btrfs_path *p, u64 time_seq); | |
2f38b3e1 AJ |
2800 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
2801 | struct btrfs_key *key, struct btrfs_path *p, | |
2802 | int find_higher, int return_any); | |
6702ed49 | 2803 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2804 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 2805 | int start_slot, u64 *last_ret, |
a6b6e75e | 2806 | struct btrfs_key *progress); |
b3b4aa74 | 2807 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2808 | struct btrfs_path *btrfs_alloc_path(void); |
2809 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2810 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 2811 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 2812 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
2813 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2814 | ||
85e21bac CM |
2815 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2816 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2817 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2818 | struct btrfs_root *root, | |
2819 | struct btrfs_path *path) | |
2820 | { | |
2821 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2822 | } | |
2823 | ||
afe5fea7 | 2824 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 JM |
2825 | struct btrfs_key *cpu_key, u32 *data_size, |
2826 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
2827 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2828 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2829 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2830 | struct btrfs_root *root, | |
2831 | struct btrfs_path *path, | |
2832 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
2833 | ||
2834 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2835 | struct btrfs_root *root, | |
2836 | struct btrfs_path *path, | |
2837 | struct btrfs_key *key, | |
2838 | u32 data_size) | |
2839 | { | |
2840 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2841 | } | |
2842 | ||
234b63a0 | 2843 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 2844 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2845 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2846 | u64 time_seq); | |
1c8f52a5 AB |
2847 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2848 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2849 | { |
2850 | ++p->slots[0]; | |
2851 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2852 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2853 | return 0; |
2854 | } | |
1c8f52a5 AB |
2855 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2856 | { | |
2857 | return btrfs_next_old_item(root, p, 0); | |
2858 | } | |
5f39d397 | 2859 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
2c536799 JM |
2860 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
2861 | struct btrfs_block_rsv *block_rsv, | |
2862 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
2863 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2864 | struct btrfs_root *root, | |
2865 | struct extent_buffer *node, | |
2866 | struct extent_buffer *parent); | |
7841cb28 DS |
2867 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2868 | { | |
2869 | /* | |
afcdd129 | 2870 | * Do it this way so we only ever do one test_bit in the normal case. |
7841cb28 | 2871 | */ |
afcdd129 JB |
2872 | if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) { |
2873 | if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags)) | |
2874 | return 2; | |
2875 | return 1; | |
2876 | } | |
2877 | return 0; | |
7841cb28 | 2878 | } |
babbf170 MX |
2879 | |
2880 | /* | |
2881 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
2882 | * anything except sleeping. This function is used to check the status of | |
2883 | * the fs. | |
2884 | */ | |
2885 | static inline int btrfs_need_cleaner_sleep(struct btrfs_root *root) | |
2886 | { | |
2887 | return (root->fs_info->sb->s_flags & MS_RDONLY || | |
2888 | btrfs_fs_closing(root->fs_info)); | |
2889 | } | |
2890 | ||
6c41761f DS |
2891 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
2892 | { | |
837d5b6e | 2893 | kfree(fs_info->balance_ctl); |
6c41761f DS |
2894 | kfree(fs_info->delayed_root); |
2895 | kfree(fs_info->extent_root); | |
2896 | kfree(fs_info->tree_root); | |
2897 | kfree(fs_info->chunk_root); | |
2898 | kfree(fs_info->dev_root); | |
2899 | kfree(fs_info->csum_root); | |
bcef60f2 | 2900 | kfree(fs_info->quota_root); |
d8f98039 | 2901 | kfree(fs_info->uuid_root); |
70f6d82e | 2902 | kfree(fs_info->free_space_root); |
6c41761f DS |
2903 | kfree(fs_info->super_copy); |
2904 | kfree(fs_info->super_for_commit); | |
f667aef6 | 2905 | security_free_mnt_opts(&fs_info->security_opts); |
6c41761f DS |
2906 | kfree(fs_info); |
2907 | } | |
7841cb28 | 2908 | |
097b8a7c JS |
2909 | /* tree mod log functions from ctree.c */ |
2910 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2911 | struct seq_list *elem); | |
2912 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2913 | struct seq_list *elem); | |
5b6602e7 | 2914 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 2915 | |
dee26a9f | 2916 | /* root-item.c */ |
0660b5af CM |
2917 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
2918 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
2919 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2920 | const char *name, int name_len); | |
2921 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
2922 | struct btrfs_root *tree_root, | |
2923 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 2924 | const char *name, int name_len); |
e089f05c CM |
2925 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2926 | struct btrfs_key *key); | |
2927 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2928 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2929 | *item); | |
b45a9d8b JM |
2930 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
2931 | struct btrfs_root *root, | |
2932 | struct btrfs_key *key, | |
2933 | struct btrfs_root_item *item); | |
cb517eab MX |
2934 | int btrfs_find_root(struct btrfs_root *root, struct btrfs_key *search_key, |
2935 | struct btrfs_path *path, struct btrfs_root_item *root_item, | |
2936 | struct btrfs_key *root_key); | |
76dda93c | 2937 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
2938 | void btrfs_set_root_node(struct btrfs_root_item *item, |
2939 | struct extent_buffer *node); | |
08fe4db1 | 2940 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
2941 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
2942 | struct btrfs_root *root); | |
08fe4db1 | 2943 | |
07b30a49 SB |
2944 | /* uuid-tree.c */ |
2945 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, | |
2946 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
2947 | u64 subid); | |
2948 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, | |
2949 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
2950 | u64 subid); | |
70f80175 SB |
2951 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
2952 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
2953 | u64)); | |
07b30a49 | 2954 | |
dee26a9f | 2955 | /* dir-item.c */ |
9c52057c CM |
2956 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
2957 | const char *name, int name_len); | |
d397712b CM |
2958 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
2959 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 2960 | int name_len, struct inode *dir, |
aec7477b | 2961 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
2962 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
2963 | struct btrfs_root *root, | |
2964 | struct btrfs_path *path, u64 dir, | |
2965 | const char *name, int name_len, | |
2966 | int mod); | |
2967 | struct btrfs_dir_item * | |
2968 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
2969 | struct btrfs_root *root, | |
2970 | struct btrfs_path *path, u64 dir, | |
2971 | u64 objectid, const char *name, int name_len, | |
2972 | int mod); | |
4df27c4d YZ |
2973 | struct btrfs_dir_item * |
2974 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
2975 | struct btrfs_path *path, u64 dirid, | |
2976 | const char *name, int name_len); | |
7e38180e CM |
2977 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
2978 | struct btrfs_root *root, | |
2979 | struct btrfs_path *path, | |
2980 | struct btrfs_dir_item *di); | |
5103e947 | 2981 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
2982 | struct btrfs_root *root, |
2983 | struct btrfs_path *path, u64 objectid, | |
2984 | const char *name, u16 name_len, | |
2985 | const void *data, u16 data_len); | |
5103e947 JB |
2986 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
2987 | struct btrfs_root *root, | |
2988 | struct btrfs_path *path, u64 dir, | |
2989 | const char *name, u16 name_len, | |
2990 | int mod); | |
22a94d44 JB |
2991 | int verify_dir_item(struct btrfs_root *root, |
2992 | struct extent_buffer *leaf, | |
2993 | struct btrfs_dir_item *dir_item); | |
5f5bc6b1 FM |
2994 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
2995 | struct btrfs_path *path, | |
2996 | const char *name, | |
2997 | int name_len); | |
7b128766 JB |
2998 | |
2999 | /* orphan.c */ | |
3000 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3001 | struct btrfs_root *root, u64 offset); | |
3002 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3003 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3004 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3005 | |
dee26a9f | 3006 | /* inode-item.c */ |
3954401f CM |
3007 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3008 | struct btrfs_root *root, | |
3009 | const char *name, int name_len, | |
aec7477b | 3010 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3011 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3012 | struct btrfs_root *root, | |
3013 | const char *name, int name_len, | |
aec7477b | 3014 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
3015 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3016 | struct btrfs_root *root, | |
3017 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3018 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3019 | *root, struct btrfs_path *path, |
3020 | struct btrfs_key *location, int mod); | |
dee26a9f | 3021 | |
f186373f MF |
3022 | struct btrfs_inode_extref * |
3023 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3024 | struct btrfs_root *root, | |
3025 | struct btrfs_path *path, | |
3026 | const char *name, int name_len, | |
3027 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3028 | int cow); | |
3029 | ||
3030 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, | |
3031 | u64 ref_objectid, const char *name, | |
3032 | int name_len, | |
3033 | struct btrfs_inode_extref **extref_ret); | |
3034 | ||
dee26a9f | 3035 | /* file-item.c */ |
facc8a22 | 3036 | struct btrfs_dio_private; |
459931ec CM |
3037 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
3038 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 3039 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3040 | struct bio *bio, u32 *dst); |
4b46fce2 | 3041 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
23ea8e5a | 3042 | struct bio *bio, u64 logical_offset); |
b18c6685 | 3043 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3044 | struct btrfs_root *root, |
3045 | u64 objectid, u64 pos, | |
3046 | u64 disk_offset, u64 disk_num_bytes, | |
3047 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3048 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3049 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3050 | struct btrfs_root *root, | |
3051 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3052 | u64 bytenr, int mod); |
065631f6 | 3053 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3054 | struct btrfs_root *root, |
e6dcd2dc | 3055 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 3056 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3057 | struct bio *bio, u64 file_start, int contig); |
a2de733c AJ |
3058 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3059 | struct list_head *list, int search_commit); | |
7ffbb598 FM |
3060 | void btrfs_extent_item_to_extent_map(struct inode *inode, |
3061 | const struct btrfs_path *path, | |
3062 | struct btrfs_file_extent_item *fi, | |
3063 | const bool new_inline, | |
3064 | struct extent_map *em); | |
3065 | ||
39279cc3 | 3066 | /* inode.c */ |
8ccf6f19 MX |
3067 | struct btrfs_delalloc_work { |
3068 | struct inode *inode; | |
8ccf6f19 MX |
3069 | int delay_iput; |
3070 | struct completion completion; | |
3071 | struct list_head list; | |
3072 | struct btrfs_work work; | |
3073 | }; | |
3074 | ||
3075 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, | |
651d494a | 3076 | int delay_iput); |
8ccf6f19 MX |
3077 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); |
3078 | ||
b2675157 JB |
3079 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
3080 | size_t pg_offset, u64 start, u64 len, | |
3081 | int create); | |
00361589 | 3082 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3083 | u64 *orig_start, u64 *orig_block_len, |
3084 | u64 *ram_bytes); | |
4881ee5a CM |
3085 | |
3086 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3087 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3088 | #define ClearPageChecked ClearPageFsMisc |
3089 | #define SetPageChecked SetPageFsMisc | |
3090 | #define PageChecked PageFsMisc | |
3091 | #endif | |
3092 | ||
b6973aa6 LZ |
3093 | /* This forces readahead on a given range of bytes in an inode */ |
3094 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3095 | struct file_ra_state *ra, struct file *file, | |
3096 | pgoff_t offset, unsigned long req_size) | |
3097 | { | |
3098 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3099 | } | |
3100 | ||
3de4586c CM |
3101 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
3102 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
3103 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3104 | struct btrfs_root *root, | |
3105 | struct inode *dir, struct inode *inode, | |
3106 | const char *name, int name_len); | |
3107 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
3108 | struct inode *parent_inode, struct inode *inode, | |
3109 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
3110 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3111 | struct btrfs_root *root, | |
3112 | struct inode *dir, u64 objectid, | |
3113 | const char *name, int name_len); | |
9703fefe | 3114 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
2aaa6655 | 3115 | int front); |
e02119d5 CM |
3116 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3117 | struct btrfs_root *root, | |
3118 | struct inode *inode, u64 new_size, | |
3119 | u32 min_type); | |
3120 | ||
24bbcf04 | 3121 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
6c255e67 MX |
3122 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
3123 | int nr); | |
2ac55d41 | 3124 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
ba8b04c1 | 3125 | struct extent_state **cached_state, int dedupe); |
d2fb3437 | 3126 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3127 | struct btrfs_root *new_root, |
3128 | struct btrfs_root *parent_root, | |
3129 | u64 new_dirid); | |
81a75f67 | 3130 | int btrfs_merge_bio_hook(struct page *page, unsigned long offset, |
64a16701 DW |
3131 | size_t size, struct bio *bio, |
3132 | unsigned long bio_flags); | |
c2ec175c | 3133 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 3134 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3135 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3136 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3137 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3138 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3139 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3140 | int btrfs_init_cachep(void); |
3141 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3142 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3143 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3144 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 3145 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 3146 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
3147 | int create); |
3148 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
3149 | struct btrfs_root *root, | |
3150 | struct inode *inode); | |
be6aef60 JB |
3151 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3152 | struct btrfs_root *root, struct inode *inode); | |
5b21f2ed | 3153 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
66b4ffd1 | 3154 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3155 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3156 | struct btrfs_root *root); | |
a41ad394 | 3157 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3158 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
3159 | void btrfs_add_delayed_iput(struct inode *inode); |
3160 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
3161 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3162 | u64 start, u64 num_bytes, u64 min_size, | |
3163 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3164 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3165 | struct btrfs_trans_handle *trans, int mode, | |
3166 | u64 start, u64 num_bytes, u64 min_size, | |
3167 | loff_t actual_len, u64 *alloc_hint); | |
b38ef71c | 3168 | int btrfs_inode_check_errors(struct inode *inode); |
82d339d9 | 3169 | extern const struct dentry_operations btrfs_dentry_operations; |
6a3891c5 JB |
3170 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
3171 | void btrfs_test_inode_set_ops(struct inode *inode); | |
3172 | #endif | |
f46b5a66 CH |
3173 | |
3174 | /* ioctl.c */ | |
3175 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3176 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
d5131b65 | 3177 | int btrfs_ioctl_get_supported_features(void __user *arg); |
6cbff00f CH |
3178 | void btrfs_update_iflags(struct inode *inode); |
3179 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
dd5f9615 | 3180 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3181 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3182 | struct btrfs_ioctl_defrag_range_args *range, | |
3183 | u64 newer_than, unsigned long max_pages); | |
5af3e8cc SB |
3184 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3185 | struct btrfs_ioctl_space_info *space); | |
35a3621b SB |
3186 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
3187 | struct btrfs_ioctl_balance_args *bargs); | |
2b3909f8 DW |
3188 | ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen, |
3189 | struct file *dst_file, u64 dst_loff); | |
35a3621b | 3190 | |
39279cc3 | 3191 | /* file.c */ |
9247f317 MX |
3192 | int btrfs_auto_defrag_init(void); |
3193 | void btrfs_auto_defrag_exit(void); | |
4cb5300b CM |
3194 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
3195 | struct inode *inode); | |
3196 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
26176e7c | 3197 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3198 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
7014cdb4 JB |
3199 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
3200 | int skip_pinned); | |
828c0950 | 3201 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3202 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3203 | struct btrfs_root *root, struct inode *inode, | |
3204 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3205 | u64 *drop_end, int drop_cache, |
3206 | int replace_extent, | |
3207 | u32 extent_item_size, | |
3208 | int *key_inserted); | |
5dc562c5 JB |
3209 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3210 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3211 | u64 end, int drop_cache); |
d899e052 | 3212 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 3213 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 3214 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
3215 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, |
3216 | struct page **pages, size_t num_pages, | |
3217 | loff_t pos, size_t write_bytes, | |
3218 | struct extent_state **cached); | |
728404da | 3219 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
3db11b2e ZB |
3220 | ssize_t btrfs_copy_file_range(struct file *file_in, loff_t pos_in, |
3221 | struct file *file_out, loff_t pos_out, | |
3222 | size_t len, unsigned int flags); | |
04b38d60 CH |
3223 | int btrfs_clone_file_range(struct file *file_in, loff_t pos_in, |
3224 | struct file *file_out, loff_t pos_out, u64 len); | |
6bf13c0c | 3225 | |
6702ed49 CM |
3226 | /* tree-defrag.c */ |
3227 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3228 | struct btrfs_root *root); |
58176a96 JB |
3229 | |
3230 | /* sysfs.c */ | |
3231 | int btrfs_init_sysfs(void); | |
3232 | void btrfs_exit_sysfs(void); | |
96f3136e | 3233 | int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info); |
6618a59b | 3234 | void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info); |
58176a96 | 3235 | |
5103e947 JB |
3236 | /* xattr.c */ |
3237 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3238 | |
edbd8d4e | 3239 | /* super.c */ |
96da0919 QW |
3240 | int btrfs_parse_options(struct btrfs_root *root, char *options, |
3241 | unsigned long new_flags); | |
6bf13c0c | 3242 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 JP |
3243 | |
3244 | #ifdef CONFIG_PRINTK | |
3245 | __printf(2, 3) | |
c2cf52eb | 3246 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 JP |
3247 | #else |
3248 | static inline __printf(2, 3) | |
c2cf52eb | 3249 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
533574c6 JP |
3250 | { |
3251 | } | |
3252 | #endif | |
3253 | ||
c2cf52eb SK |
3254 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3255 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3256 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3257 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3258 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3259 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3260 | #define btrfs_err(fs_info, fmt, args...) \ | |
3261 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3262 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3263 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3264 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3265 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3266 | #define btrfs_info(fs_info, fmt, args...) \ | |
3267 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3268 | |
08a84e25 DS |
3269 | /* |
3270 | * Wrappers that use printk_in_rcu | |
3271 | */ | |
3272 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3273 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3274 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3275 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3276 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3277 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3278 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3279 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3280 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3281 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3282 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3283 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3284 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3285 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3286 | ||
24aa6b41 DS |
3287 | /* |
3288 | * Wrappers that use a ratelimited printk_in_rcu | |
3289 | */ | |
3290 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3291 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3292 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3293 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3294 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3295 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3296 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3297 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3298 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3299 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3300 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3301 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3302 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3303 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3304 | ||
1dd6d7ca DS |
3305 | /* |
3306 | * Wrappers that use a ratelimited printk | |
3307 | */ | |
3308 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3309 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3310 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3311 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3312 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3313 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3314 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3315 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3316 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3317 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3318 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3319 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3320 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3321 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
897a41b1 JM |
3322 | |
3323 | #if defined(CONFIG_DYNAMIC_DEBUG) | |
3324 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3325 | do { \ | |
3326 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3327 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3328 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args); \ | |
3329 | } while (0) | |
3330 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ | |
3331 | do { \ | |
3332 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3333 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3334 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args); \ | |
3335 | } while (0) | |
3336 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ | |
3337 | do { \ | |
3338 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3339 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3340 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, \ | |
3341 | ##args);\ | |
3342 | } while (0) | |
3343 | #define btrfs_debug_rl(fs_info, fmt, args...) \ | |
3344 | do { \ | |
3345 | DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ | |
3346 | if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ | |
3347 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, \ | |
3348 | ##args); \ | |
3349 | } while (0) | |
3350 | #elif defined(DEBUG) | |
c2cf52eb SK |
3351 | #define btrfs_debug(fs_info, fmt, args...) \ |
3352 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3353 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3354 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3355 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3356 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3357 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3358 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3359 | #else |
3360 | #define btrfs_debug(fs_info, fmt, args...) \ | |
62e85577 | 3361 | no_printk(KERN_DEBUG fmt, ##args) |
08a84e25 DS |
3362 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3363 | no_printk(KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3364 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3365 | no_printk(KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3366 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3367 | no_printk(KERN_DEBUG fmt, ##args) | |
27a0dd61 | 3368 | #endif |
c2cf52eb | 3369 | |
08a84e25 DS |
3370 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3371 | do { \ | |
3372 | rcu_read_lock(); \ | |
3373 | btrfs_printk(fs_info, fmt, ##args); \ | |
3374 | rcu_read_unlock(); \ | |
3375 | } while (0) | |
3376 | ||
24aa6b41 DS |
3377 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3378 | do { \ | |
3379 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3380 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3381 | DEFAULT_RATELIMIT_BURST); \ | |
3382 | if (__ratelimit(&_rs)) \ | |
3383 | btrfs_printk(fs_info, fmt, ##args); \ | |
3384 | } while (0) | |
3385 | ||
3386 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3387 | do { \ | |
3388 | rcu_read_lock(); \ | |
3389 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3390 | rcu_read_unlock(); \ | |
3391 | } while (0) | |
3392 | ||
2e17c7c6 JB |
3393 | #ifdef CONFIG_BTRFS_ASSERT |
3394 | ||
c0d19e2b | 3395 | __cold |
2e17c7c6 JB |
3396 | static inline void assfail(char *expr, char *file, int line) |
3397 | { | |
efe120a0 | 3398 | pr_err("BTRFS: assertion failed: %s, file: %s, line: %d", |
2e17c7c6 JB |
3399 | expr, file, line); |
3400 | BUG(); | |
3401 | } | |
3402 | ||
3403 | #define ASSERT(expr) \ | |
3404 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3405 | #else | |
3406 | #define ASSERT(expr) ((void)0) | |
3407 | #endif | |
3408 | ||
533574c6 | 3409 | __printf(5, 6) |
c0d19e2b | 3410 | __cold |
34d97007 | 3411 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3412 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3413 | |
e33e17ee | 3414 | const char *btrfs_decode_error(int errno); |
533574c6 | 3415 | |
c0d19e2b | 3416 | __cold |
49b25e05 | 3417 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
66642832 | 3418 | const char *function, |
49b25e05 JM |
3419 | unsigned int line, int errno); |
3420 | ||
c5f4ccb2 AJ |
3421 | /* |
3422 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3423 | * detected, that way the exact line number is reported. | |
3424 | */ | |
66642832 | 3425 | #define btrfs_abort_transaction(trans, errno) \ |
c5f4ccb2 AJ |
3426 | do { \ |
3427 | /* Report first abort since mount */ \ | |
3428 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
66642832 | 3429 | &((trans)->fs_info->fs_state))) { \ |
c5f4ccb2 AJ |
3430 | WARN(1, KERN_DEBUG \ |
3431 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3432 | (errno)); \ | |
3433 | } \ | |
66642832 | 3434 | __btrfs_abort_transaction((trans), __func__, \ |
c5f4ccb2 AJ |
3435 | __LINE__, (errno)); \ |
3436 | } while (0) | |
3437 | ||
3438 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3439 | do { \ | |
3440 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3441 | (errno), fmt, ##args); \ | |
3442 | } while (0) | |
3443 | ||
3444 | __printf(5, 6) | |
3445 | __cold | |
3446 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3447 | unsigned int line, int errno, const char *fmt, ...); | |
3448 | /* | |
3449 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3450 | * will panic(). Otherwise we BUG() here. | |
3451 | */ | |
3452 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3453 | do { \ | |
3454 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3455 | BUG(); \ | |
3456 | } while (0) | |
3457 | ||
3458 | ||
3459 | /* compatibility and incompatibility defines */ | |
3460 | ||
2b0ce2c2 MH |
3461 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3462 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3463 | ||
3464 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3465 | u64 flag) | |
3466 | { | |
3467 | struct btrfs_super_block *disk_super; | |
3468 | u64 features; | |
3469 | ||
3470 | disk_super = fs_info->super_copy; | |
3471 | features = btrfs_super_incompat_flags(disk_super); | |
3472 | if (!(features & flag)) { | |
ceda0864 MX |
3473 | spin_lock(&fs_info->super_lock); |
3474 | features = btrfs_super_incompat_flags(disk_super); | |
3475 | if (!(features & flag)) { | |
3476 | features |= flag; | |
3477 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3478 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3479 | flag); |
3480 | } | |
3481 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3482 | } |
3483 | } | |
3484 | ||
1abfbcdf OS |
3485 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
3486 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3487 | ||
3488 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
3489 | u64 flag) | |
3490 | { | |
3491 | struct btrfs_super_block *disk_super; | |
3492 | u64 features; | |
3493 | ||
3494 | disk_super = fs_info->super_copy; | |
3495 | features = btrfs_super_incompat_flags(disk_super); | |
3496 | if (features & flag) { | |
3497 | spin_lock(&fs_info->super_lock); | |
3498 | features = btrfs_super_incompat_flags(disk_super); | |
3499 | if (features & flag) { | |
3500 | features &= ~flag; | |
3501 | btrfs_set_super_incompat_flags(disk_super, features); | |
3502 | btrfs_info(fs_info, "clearing %llu feature flag", | |
3503 | flag); | |
3504 | } | |
3505 | spin_unlock(&fs_info->super_lock); | |
3506 | } | |
3507 | } | |
3508 | ||
3173a18f JB |
3509 | #define btrfs_fs_incompat(fs_info, opt) \ |
3510 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3511 | ||
9780c497 | 3512 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3513 | { |
3514 | struct btrfs_super_block *disk_super; | |
3515 | disk_super = fs_info->super_copy; | |
3516 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3517 | } | |
3518 | ||
1abfbcdf OS |
3519 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
3520 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3521 | ||
3522 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3523 | u64 flag) | |
3524 | { | |
3525 | struct btrfs_super_block *disk_super; | |
3526 | u64 features; | |
3527 | ||
3528 | disk_super = fs_info->super_copy; | |
3529 | features = btrfs_super_compat_ro_flags(disk_super); | |
3530 | if (!(features & flag)) { | |
3531 | spin_lock(&fs_info->super_lock); | |
3532 | features = btrfs_super_compat_ro_flags(disk_super); | |
3533 | if (!(features & flag)) { | |
3534 | features |= flag; | |
3535 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3536 | btrfs_info(fs_info, "setting %llu ro feature flag", | |
3537 | flag); | |
3538 | } | |
3539 | spin_unlock(&fs_info->super_lock); | |
3540 | } | |
3541 | } | |
3542 | ||
3543 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
3544 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3545 | ||
3546 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3547 | u64 flag) | |
3548 | { | |
3549 | struct btrfs_super_block *disk_super; | |
3550 | u64 features; | |
3551 | ||
3552 | disk_super = fs_info->super_copy; | |
3553 | features = btrfs_super_compat_ro_flags(disk_super); | |
3554 | if (features & flag) { | |
3555 | spin_lock(&fs_info->super_lock); | |
3556 | features = btrfs_super_compat_ro_flags(disk_super); | |
3557 | if (features & flag) { | |
3558 | features &= ~flag; | |
3559 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3560 | btrfs_info(fs_info, "clearing %llu ro feature flag", | |
3561 | flag); | |
3562 | } | |
3563 | spin_unlock(&fs_info->super_lock); | |
3564 | } | |
3565 | } | |
3566 | ||
3567 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3568 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3569 | ||
3570 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3571 | { | |
3572 | struct btrfs_super_block *disk_super; | |
3573 | disk_super = fs_info->super_copy; | |
3574 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3575 | } | |
3576 | ||
33268eaf | 3577 | /* acl.c */ |
0eda294d | 3578 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3579 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3580 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3581 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3582 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3583 | #else |
ed8f3737 | 3584 | #define btrfs_get_acl NULL |
996a710d | 3585 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3586 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3587 | struct inode *inode, struct inode *dir) | |
3588 | { | |
3589 | return 0; | |
3590 | } | |
9b89d95a | 3591 | #endif |
0f9dd46c | 3592 | |
5d4f98a2 YZ |
3593 | /* relocation.c */ |
3594 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
3595 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
3596 | struct btrfs_root *root); | |
3597 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3598 | struct btrfs_root *root); | |
3599 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3600 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
3601 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3602 | struct btrfs_root *root, struct extent_buffer *buf, | |
3603 | struct extent_buffer *cow); | |
147d256e | 3604 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 3605 | u64 *bytes_to_reserve); |
49b25e05 | 3606 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3607 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3608 | |
3609 | /* scrub.c */ | |
aa1b8cd4 SB |
3610 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3611 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3612 | int readonly, int is_dev_replace); |
143bede5 | 3613 | void btrfs_scrub_pause(struct btrfs_root *root); |
143bede5 | 3614 | void btrfs_scrub_continue(struct btrfs_root *root); |
aa1b8cd4 SB |
3615 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
3616 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
3617 | struct btrfs_device *dev); | |
a2de733c AJ |
3618 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, |
3619 | struct btrfs_scrub_progress *progress); | |
c404e0dc MX |
3620 | |
3621 | /* dev-replace.c */ | |
3622 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
3623 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
3624 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
3625 | ||
3626 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
3627 | { | |
3628 | btrfs_bio_counter_sub(fs_info, 1); | |
3629 | } | |
a2de733c | 3630 | |
7414a03f AJ |
3631 | /* reada.c */ |
3632 | struct reada_control { | |
3633 | struct btrfs_root *root; /* tree to prefetch */ | |
3634 | struct btrfs_key key_start; | |
3635 | struct btrfs_key key_end; /* exclusive */ | |
3636 | atomic_t elems; | |
3637 | struct kref refcnt; | |
3638 | wait_queue_head_t wait; | |
3639 | }; | |
3640 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3641 | struct btrfs_key *start, struct btrfs_key *end); | |
3642 | int btrfs_reada_wait(void *handle); | |
3643 | void btrfs_reada_detach(void *handle); | |
02873e43 ZL |
3644 | int btree_readahead_hook(struct btrfs_fs_info *fs_info, |
3645 | struct extent_buffer *eb, u64 start, int err); | |
7414a03f | 3646 | |
95a06077 JS |
3647 | static inline int is_fstree(u64 rootid) |
3648 | { | |
3649 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
3650 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
3651 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
3652 | return 1; |
3653 | return 0; | |
3654 | } | |
210549eb DS |
3655 | |
3656 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3657 | { | |
3658 | return signal_pending(current); | |
3659 | } | |
3660 | ||
aaedb55b JB |
3661 | /* Sanity test specific functions */ |
3662 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3663 | void btrfs_test_destroy_inode(struct inode *inode); | |
3664 | #endif | |
210549eb | 3665 | |
f5ee5c9a | 3666 | static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info) |
fccb84c9 DS |
3667 | { |
3668 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
f5ee5c9a JM |
3669 | if (unlikely(test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, |
3670 | &fs_info->fs_state))) | |
fccb84c9 DS |
3671 | return 1; |
3672 | #endif | |
3673 | return 0; | |
3674 | } | |
eb60ceac | 3675 | #endif |