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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
810191ff CM |
22 | #include <linux/mm.h> |
23 | #include <linux/highmem.h> | |
e20d96d6 | 24 | #include <linux/fs.h> |
a2de733c | 25 | #include <linux/rwsem.h> |
803b2f54 | 26 | #include <linux/semaphore.h> |
58176a96 | 27 | #include <linux/completion.h> |
04160088 | 28 | #include <linux/backing-dev.h> |
e6dcd2dc | 29 | #include <linux/wait.h> |
5a0e3ad6 | 30 | #include <linux/slab.h> |
f8b18087 | 31 | #include <linux/kobject.h> |
1abe9b8a | 32 | #include <trace/events/btrfs.h> |
479965d6 | 33 | #include <asm/kmap_types.h> |
3b16a4e3 | 34 | #include <linux/pagemap.h> |
55e301fd | 35 | #include <linux/btrfs.h> |
db671160 | 36 | #include <linux/btrfs_tree.h> |
21c7e756 | 37 | #include <linux/workqueue.h> |
f667aef6 | 38 | #include <linux/security.h> |
ee22184b | 39 | #include <linux/sizes.h> |
d1310b2e | 40 | #include "extent_io.h" |
5f39d397 | 41 | #include "extent_map.h" |
8b712842 | 42 | #include "async-thread.h" |
e20d96d6 | 43 | |
e089f05c | 44 | struct btrfs_trans_handle; |
79154b1b | 45 | struct btrfs_transaction; |
a22285a6 | 46 | struct btrfs_pending_snapshot; |
35b7e476 CM |
47 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
48 | extern struct kmem_cache *btrfs_transaction_cachep; | |
49 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 50 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 51 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 52 | struct btrfs_ordered_sum; |
e089f05c | 53 | |
294e30fe JB |
54 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
55 | #define STATIC noinline | |
56 | #else | |
57 | #define STATIC static noinline | |
58 | #endif | |
59 | ||
cdb4c574 | 60 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 61 | |
72d7aefc | 62 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 63 | |
4008c04a | 64 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 65 | |
5d4f98a2 YZ |
66 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
67 | ||
727011e0 CM |
68 | /* |
69 | * the max metadata block size. This limit is somewhat artificial, | |
70 | * but the memmove costs go through the roof for larger blocks. | |
71 | */ | |
72 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
73 | ||
e20d96d6 CM |
74 | /* |
75 | * we can actually store much bigger names, but lets not confuse the rest | |
76 | * of linux | |
77 | */ | |
78 | #define BTRFS_NAME_LEN 255 | |
79 | ||
f186373f MF |
80 | /* |
81 | * Theoretical limit is larger, but we keep this down to a sane | |
82 | * value. That should limit greatly the possibility of collisions on | |
83 | * inode ref items. | |
84 | */ | |
85 | #define BTRFS_LINK_MAX 65535U | |
86 | ||
4d4ab6d6 | 87 | static const int btrfs_csum_sizes[] = { 4 }; |
607d432d | 88 | |
509659cd | 89 | /* four bytes for CRC32 */ |
3954401f | 90 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 91 | |
29a8d9a0 SB |
92 | /* spefic to btrfs_map_block(), therefore not in include/linux/blk_types.h */ |
93 | #define REQ_GET_READ_MIRRORS (1 << 30) | |
94 | ||
3d136a11 SB |
95 | /* ioprio of readahead is set to idle */ |
96 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
97 | ||
ee22184b | 98 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M |
e2d84521 | 99 | |
ee22184b | 100 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M |
dcab6a3b | 101 | |
0b86a832 CM |
102 | struct btrfs_mapping_tree { |
103 | struct extent_map_tree map_tree; | |
104 | }; | |
105 | ||
0b86a832 CM |
106 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
107 | { | |
108 | BUG_ON(num_stripes == 0); | |
109 | return sizeof(struct btrfs_chunk) + | |
110 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
111 | } | |
112 | ||
acce952b | 113 | /* |
114 | * File system states | |
115 | */ | |
87533c47 | 116 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 117 | #define BTRFS_FS_STATE_REMOUNTING 1 |
08748810 | 118 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
c404e0dc | 119 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
acce952b | 120 | |
5d4f98a2 YZ |
121 | #define BTRFS_BACKREF_REV_MAX 256 |
122 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
123 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
124 | BTRFS_BACKREF_REV_SHIFT) | |
125 | ||
126 | #define BTRFS_OLD_BACKREF_REV 0 | |
127 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 128 | |
fec577fb CM |
129 | /* |
130 | * every tree block (leaf or node) starts with this header. | |
131 | */ | |
bb492bb0 | 132 | struct btrfs_header { |
e17cade2 | 133 | /* these first four must match the super block */ |
f254e52c | 134 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 135 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 136 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 137 | __le64 flags; |
e17cade2 CM |
138 | |
139 | /* allowed to be different from the super from here on down */ | |
140 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 141 | __le64 generation; |
4d775673 | 142 | __le64 owner; |
5f39d397 | 143 | __le32 nritems; |
9a6f11ed | 144 | u8 level; |
eb60ceac CM |
145 | } __attribute__ ((__packed__)); |
146 | ||
5f39d397 | 147 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
148 | sizeof(struct btrfs_header)) / \ |
149 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 150 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
707e8a07 | 151 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->nodesize)) |
7ec20afb DS |
152 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ |
153 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
236454df CM |
154 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
155 | sizeof(struct btrfs_item) - \ | |
7ec20afb | 156 | BTRFS_FILE_EXTENT_INLINE_DATA_START) |
f34f57a3 YZ |
157 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
158 | sizeof(struct btrfs_item) -\ | |
159 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 160 | |
0b86a832 CM |
161 | |
162 | /* | |
163 | * this is a very generous portion of the super block, giving us | |
164 | * room to translate 14 chunks with 3 stripes each. | |
165 | */ | |
166 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
167 | ||
af31f5e5 CM |
168 | /* |
169 | * just in case we somehow lose the roots and are not able to mount, | |
170 | * we store an array of the roots from previous transactions | |
171 | * in the super. | |
172 | */ | |
173 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
174 | struct btrfs_root_backup { | |
175 | __le64 tree_root; | |
176 | __le64 tree_root_gen; | |
177 | ||
178 | __le64 chunk_root; | |
179 | __le64 chunk_root_gen; | |
180 | ||
181 | __le64 extent_root; | |
182 | __le64 extent_root_gen; | |
183 | ||
184 | __le64 fs_root; | |
185 | __le64 fs_root_gen; | |
186 | ||
187 | __le64 dev_root; | |
188 | __le64 dev_root_gen; | |
189 | ||
190 | __le64 csum_root; | |
191 | __le64 csum_root_gen; | |
192 | ||
193 | __le64 total_bytes; | |
194 | __le64 bytes_used; | |
195 | __le64 num_devices; | |
196 | /* future */ | |
d1423248 | 197 | __le64 unused_64[4]; |
af31f5e5 CM |
198 | |
199 | u8 tree_root_level; | |
200 | u8 chunk_root_level; | |
201 | u8 extent_root_level; | |
202 | u8 fs_root_level; | |
203 | u8 dev_root_level; | |
204 | u8 csum_root_level; | |
205 | /* future and to align */ | |
206 | u8 unused_8[10]; | |
207 | } __attribute__ ((__packed__)); | |
208 | ||
fec577fb CM |
209 | /* |
210 | * the super block basically lists the main trees of the FS | |
211 | * it currently lacks any block count etc etc | |
212 | */ | |
234b63a0 | 213 | struct btrfs_super_block { |
f254e52c | 214 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 215 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 216 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 217 | __le64 bytenr; /* this block number */ |
63b10fc4 | 218 | __le64 flags; |
e17cade2 CM |
219 | |
220 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 221 | __le64 magic; |
3768f368 CM |
222 | __le64 generation; |
223 | __le64 root; | |
0b86a832 | 224 | __le64 chunk_root; |
e02119d5 | 225 | __le64 log_root; |
c3027eb5 CM |
226 | |
227 | /* this will help find the new super based on the log root */ | |
228 | __le64 log_root_transid; | |
db94535d CM |
229 | __le64 total_bytes; |
230 | __le64 bytes_used; | |
2e635a27 | 231 | __le64 root_dir_objectid; |
8a4b83cc | 232 | __le64 num_devices; |
5f39d397 CM |
233 | __le32 sectorsize; |
234 | __le32 nodesize; | |
707e8a07 | 235 | __le32 __unused_leafsize; |
87ee04eb | 236 | __le32 stripesize; |
0b86a832 | 237 | __le32 sys_chunk_array_size; |
84234f3a | 238 | __le64 chunk_root_generation; |
f2b636e8 JB |
239 | __le64 compat_flags; |
240 | __le64 compat_ro_flags; | |
241 | __le64 incompat_flags; | |
607d432d | 242 | __le16 csum_type; |
db94535d | 243 | u8 root_level; |
0b86a832 | 244 | u8 chunk_root_level; |
e02119d5 | 245 | u8 log_root_level; |
0d81ba5d | 246 | struct btrfs_dev_item dev_item; |
c3027eb5 | 247 | |
7ae9c09d | 248 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 249 | |
0af3d00b | 250 | __le64 cache_generation; |
26432799 | 251 | __le64 uuid_tree_generation; |
0af3d00b | 252 | |
c3027eb5 | 253 | /* future expansion */ |
26432799 | 254 | __le64 reserved[30]; |
0b86a832 | 255 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 256 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
257 | } __attribute__ ((__packed__)); |
258 | ||
f2b636e8 JB |
259 | /* |
260 | * Compat flags that we support. If any incompat flags are set other than the | |
261 | * ones specified below then we will fail to mount | |
262 | */ | |
5d4f98a2 | 263 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
264 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
265 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
70f6d82e OS |
266 | |
267 | #define BTRFS_FEATURE_COMPAT_RO_SUPP \ | |
268 | (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE) | |
269 | ||
2eaa055f JM |
270 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
271 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
272 | ||
0af3d00b JB |
273 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
274 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 275 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 276 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 277 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 278 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
53b381b3 | 279 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 280 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f JB |
281 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
282 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) | |
f2b636e8 | 283 | |
2eaa055f JM |
284 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
285 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
286 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 287 | |
fec577fb | 288 | /* |
62e2749e | 289 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
290 | * the item in the leaf (relative to the start of the data area) |
291 | */ | |
0783fcfc | 292 | struct btrfs_item { |
e2fa7227 | 293 | struct btrfs_disk_key key; |
123abc88 | 294 | __le32 offset; |
5f39d397 | 295 | __le32 size; |
eb60ceac CM |
296 | } __attribute__ ((__packed__)); |
297 | ||
fec577fb CM |
298 | /* |
299 | * leaves have an item area and a data area: | |
300 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
301 | * | |
302 | * The data is separate from the items to get the keys closer together | |
303 | * during searches. | |
304 | */ | |
234b63a0 | 305 | struct btrfs_leaf { |
bb492bb0 | 306 | struct btrfs_header header; |
123abc88 | 307 | struct btrfs_item items[]; |
eb60ceac CM |
308 | } __attribute__ ((__packed__)); |
309 | ||
fec577fb CM |
310 | /* |
311 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
312 | * other blocks | |
313 | */ | |
123abc88 CM |
314 | struct btrfs_key_ptr { |
315 | struct btrfs_disk_key key; | |
316 | __le64 blockptr; | |
74493f7a | 317 | __le64 generation; |
123abc88 CM |
318 | } __attribute__ ((__packed__)); |
319 | ||
234b63a0 | 320 | struct btrfs_node { |
bb492bb0 | 321 | struct btrfs_header header; |
123abc88 | 322 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
323 | } __attribute__ ((__packed__)); |
324 | ||
fec577fb | 325 | /* |
234b63a0 CM |
326 | * btrfs_paths remember the path taken from the root down to the leaf. |
327 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
328 | * to any other levels that are present. |
329 | * | |
330 | * The slots array records the index of the item or block pointer | |
331 | * used while walking the tree. | |
332 | */ | |
e4058b54 | 333 | enum { READA_NONE = 0, READA_BACK, READA_FORWARD }; |
234b63a0 | 334 | struct btrfs_path { |
5f39d397 | 335 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 336 | int slots[BTRFS_MAX_LEVEL]; |
925baedd | 337 | /* if there is real range locking, this locks field will change */ |
4fb72bf2 | 338 | u8 locks[BTRFS_MAX_LEVEL]; |
dccabfad | 339 | u8 reada; |
925baedd | 340 | /* keep some upper locks as we walk down */ |
7853f15b | 341 | u8 lowest_level; |
459931ec CM |
342 | |
343 | /* | |
344 | * set by btrfs_split_item, tells search_slot to keep all locks | |
345 | * and to force calls to keep space in the nodes | |
346 | */ | |
b9473439 CM |
347 | unsigned int search_for_split:1; |
348 | unsigned int keep_locks:1; | |
349 | unsigned int skip_locking:1; | |
350 | unsigned int leave_spinning:1; | |
5d4f98a2 | 351 | unsigned int search_commit_root:1; |
3f8a18cc | 352 | unsigned int need_commit_sem:1; |
5f5bc6b1 | 353 | unsigned int skip_release_on_error:1; |
eb60ceac | 354 | }; |
5d4f98a2 YZ |
355 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
356 | sizeof(struct btrfs_item)) | |
e922e087 SB |
357 | struct btrfs_dev_replace { |
358 | u64 replace_state; /* see #define above */ | |
359 | u64 time_started; /* seconds since 1-Jan-1970 */ | |
360 | u64 time_stopped; /* seconds since 1-Jan-1970 */ | |
361 | atomic64_t num_write_errors; | |
362 | atomic64_t num_uncorrectable_read_errors; | |
363 | ||
364 | u64 cursor_left; | |
365 | u64 committed_cursor_left; | |
366 | u64 cursor_left_last_write_of_item; | |
367 | u64 cursor_right; | |
368 | ||
369 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
370 | ||
371 | int is_valid; | |
372 | int item_needs_writeback; | |
373 | struct btrfs_device *srcdev; | |
374 | struct btrfs_device *tgtdev; | |
375 | ||
376 | pid_t lock_owner; | |
377 | atomic_t nesting_level; | |
378 | struct mutex lock_finishing_cancel_unmount; | |
73beece9 LB |
379 | rwlock_t lock; |
380 | atomic_t read_locks; | |
381 | atomic_t blocking_readers; | |
382 | wait_queue_head_t read_lock_wq; | |
e922e087 SB |
383 | |
384 | struct btrfs_scrub_progress scrub_progress; | |
385 | }; | |
386 | ||
c1895442 JM |
387 | /* For raid type sysfs entries */ |
388 | struct raid_kobject { | |
389 | int raid_type; | |
390 | struct kobject kobj; | |
391 | }; | |
392 | ||
6324fbf3 | 393 | struct btrfs_space_info { |
26b47ff6 | 394 | spinlock_t lock; |
6a63209f | 395 | |
89a55897 JB |
396 | u64 total_bytes; /* total bytes in the space, |
397 | this doesn't take mirrors into account */ | |
b742bb82 | 398 | u64 bytes_used; /* total bytes used, |
e9c54999 | 399 | this doesn't take mirrors into account */ |
6a63209f JB |
400 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
401 | transaction finishes */ | |
402 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
403 | current allocations */ | |
6a63209f | 404 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 405 | delalloc/allocations */ |
26b47ff6 MX |
406 | u64 bytes_readonly; /* total bytes that are read only */ |
407 | ||
4f4db217 JB |
408 | u64 max_extent_size; /* This will hold the maximum extent size of |
409 | the space info if we had an ENOSPC in the | |
410 | allocator. */ | |
411 | ||
26b47ff6 MX |
412 | unsigned int full:1; /* indicates that we cannot allocate any more |
413 | chunks for this space */ | |
414 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
415 | ||
416 | unsigned int flush:1; /* set if we are trying to make space */ | |
417 | ||
418 | unsigned int force_alloc; /* set if we need to force a chunk | |
419 | alloc for this space */ | |
420 | ||
b742bb82 | 421 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
422 | u64 disk_total; /* total bytes on disk, takes mirrors into |
423 | account */ | |
6a63209f | 424 | |
26b47ff6 MX |
425 | u64 flags; |
426 | ||
b150a4f1 JB |
427 | /* |
428 | * bytes_pinned is kept in line with what is actually pinned, as in | |
429 | * we've called update_block_group and dropped the bytes_used counter | |
430 | * and increased the bytes_pinned counter. However this means that | |
431 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
bb7ab3b9 AB |
432 | * delayed refs are flushed, so this counter is inc'ed every time we |
433 | * call btrfs_free_extent so it is a realtime count of what will be | |
434 | * freed once the transaction is committed. It will be zero'ed every | |
435 | * time the transaction commits. | |
b150a4f1 JB |
436 | */ |
437 | struct percpu_counter total_bytes_pinned; | |
438 | ||
6324fbf3 | 439 | struct list_head list; |
75c68e9f | 440 | /* Protected by the spinlock 'lock'. */ |
633c0aad | 441 | struct list_head ro_bgs; |
0f9dd46c | 442 | |
26b47ff6 | 443 | struct rw_semaphore groups_sem; |
0f9dd46c | 444 | /* for block groups in our same type */ |
b742bb82 | 445 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 446 | wait_queue_head_t wait; |
6ab0a202 JM |
447 | |
448 | struct kobject kobj; | |
c1895442 | 449 | struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; |
0f9dd46c JB |
450 | }; |
451 | ||
66d8f3dd MX |
452 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
453 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
454 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
455 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
456 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
457 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
458 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
459 | ||
f0486c68 YZ |
460 | struct btrfs_block_rsv { |
461 | u64 size; | |
462 | u64 reserved; | |
f0486c68 | 463 | struct btrfs_space_info *space_info; |
f0486c68 | 464 | spinlock_t lock; |
66d8f3dd MX |
465 | unsigned short full; |
466 | unsigned short type; | |
467 | unsigned short failfast; | |
f0486c68 YZ |
468 | }; |
469 | ||
fa9c0d79 CM |
470 | /* |
471 | * free clusters are used to claim free space in relatively large chunks, | |
472 | * allowing us to do less seeky writes. They are used for all metadata | |
473 | * allocations and data allocations in ssd mode. | |
474 | */ | |
475 | struct btrfs_free_cluster { | |
476 | spinlock_t lock; | |
477 | spinlock_t refill_lock; | |
478 | struct rb_root root; | |
479 | ||
480 | /* largest extent in this cluster */ | |
481 | u64 max_size; | |
482 | ||
483 | /* first extent starting offset */ | |
484 | u64 window_start; | |
485 | ||
c759c4e1 JB |
486 | /* We did a full search and couldn't create a cluster */ |
487 | bool fragmented; | |
488 | ||
fa9c0d79 CM |
489 | struct btrfs_block_group_cache *block_group; |
490 | /* | |
491 | * when a cluster is allocated from a block group, we put the | |
492 | * cluster onto a list in the block group so that it can | |
493 | * be freed before the block group is freed. | |
494 | */ | |
495 | struct list_head block_group_list; | |
6324fbf3 CM |
496 | }; |
497 | ||
817d52f8 JB |
498 | enum btrfs_caching_type { |
499 | BTRFS_CACHE_NO = 0, | |
500 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
501 | BTRFS_CACHE_FAST = 2, |
502 | BTRFS_CACHE_FINISHED = 3, | |
36cce922 | 503 | BTRFS_CACHE_ERROR = 4, |
817d52f8 JB |
504 | }; |
505 | ||
0af3d00b JB |
506 | enum btrfs_disk_cache_state { |
507 | BTRFS_DC_WRITTEN = 0, | |
508 | BTRFS_DC_ERROR = 1, | |
509 | BTRFS_DC_CLEAR = 2, | |
510 | BTRFS_DC_SETUP = 3, | |
0af3d00b JB |
511 | }; |
512 | ||
11833d66 YZ |
513 | struct btrfs_caching_control { |
514 | struct list_head list; | |
515 | struct mutex mutex; | |
516 | wait_queue_head_t wait; | |
bab39bf9 | 517 | struct btrfs_work work; |
11833d66 YZ |
518 | struct btrfs_block_group_cache *block_group; |
519 | u64 progress; | |
520 | atomic_t count; | |
521 | }; | |
522 | ||
73fa48b6 OS |
523 | /* Once caching_thread() finds this much free space, it will wake up waiters. */ |
524 | #define CACHING_CTL_WAKE_UP (1024 * 1024 * 2) | |
525 | ||
4c6d1d85 CM |
526 | struct btrfs_io_ctl { |
527 | void *cur, *orig; | |
528 | struct page *page; | |
529 | struct page **pages; | |
530 | struct btrfs_root *root; | |
c9dc4c65 | 531 | struct inode *inode; |
4c6d1d85 CM |
532 | unsigned long size; |
533 | int index; | |
534 | int num_pages; | |
c9dc4c65 CM |
535 | int entries; |
536 | int bitmaps; | |
4c6d1d85 CM |
537 | unsigned check_crcs:1; |
538 | }; | |
539 | ||
9078a3e1 CM |
540 | struct btrfs_block_group_cache { |
541 | struct btrfs_key key; | |
542 | struct btrfs_block_group_item item; | |
817d52f8 | 543 | struct btrfs_fs_info *fs_info; |
0af3d00b | 544 | struct inode *inode; |
c286ac48 | 545 | spinlock_t lock; |
324ae4df | 546 | u64 pinned; |
e8569813 | 547 | u64 reserved; |
e570fd27 | 548 | u64 delalloc_bytes; |
1b2da372 | 549 | u64 bytes_super; |
0b86a832 | 550 | u64 flags; |
5b0e95bf | 551 | u64 cache_generation; |
a5ed9182 OS |
552 | u32 sectorsize; |
553 | ||
554 | /* | |
555 | * If the free space extent count exceeds this number, convert the block | |
556 | * group to bitmaps. | |
557 | */ | |
558 | u32 bitmap_high_thresh; | |
559 | ||
560 | /* | |
561 | * If the free space extent count drops below this number, convert the | |
562 | * block group back to extents. | |
563 | */ | |
564 | u32 bitmap_low_thresh; | |
53b381b3 | 565 | |
e570fd27 MX |
566 | /* |
567 | * It is just used for the delayed data space allocation because | |
568 | * only the data space allocation and the relative metadata update | |
569 | * can be done cross the transaction. | |
570 | */ | |
571 | struct rw_semaphore data_rwsem; | |
572 | ||
53b381b3 DW |
573 | /* for raid56, this is a full stripe, without parity */ |
574 | unsigned long full_stripe_len; | |
575 | ||
868f401a | 576 | unsigned int ro; |
0410c94a | 577 | unsigned int iref:1; |
4f69cb98 | 578 | unsigned int has_caching_ctl:1; |
04216820 | 579 | unsigned int removed:1; |
0af3d00b JB |
580 | |
581 | int disk_cache_state; | |
0f9dd46c | 582 | |
817d52f8 | 583 | /* cache tracking stuff */ |
817d52f8 | 584 | int cached; |
11833d66 YZ |
585 | struct btrfs_caching_control *caching_ctl; |
586 | u64 last_byte_to_unpin; | |
817d52f8 | 587 | |
0f9dd46c JB |
588 | struct btrfs_space_info *space_info; |
589 | ||
590 | /* free space cache stuff */ | |
34d52cb6 | 591 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
592 | |
593 | /* block group cache stuff */ | |
594 | struct rb_node cache_node; | |
595 | ||
596 | /* for block groups in the same raid type */ | |
597 | struct list_head list; | |
d2fb3437 YZ |
598 | |
599 | /* usage count */ | |
600 | atomic_t count; | |
fa9c0d79 CM |
601 | |
602 | /* List of struct btrfs_free_clusters for this block group. | |
603 | * Today it will only have one thing on it, but that may change | |
604 | */ | |
605 | struct list_head cluster_list; | |
ea658bad | 606 | |
47ab2a6c JB |
607 | /* For delayed block group creation or deletion of empty block groups */ |
608 | struct list_head bg_list; | |
633c0aad JB |
609 | |
610 | /* For read-only block groups */ | |
611 | struct list_head ro_list; | |
04216820 FM |
612 | |
613 | atomic_t trimming; | |
ce93ec54 JB |
614 | |
615 | /* For dirty block groups */ | |
616 | struct list_head dirty_list; | |
c9dc4c65 CM |
617 | struct list_head io_list; |
618 | ||
619 | struct btrfs_io_ctl io_ctl; | |
a5ed9182 | 620 | |
9cfa3e34 FM |
621 | /* |
622 | * Incremented when doing extent allocations and holding a read lock | |
623 | * on the space_info's groups_sem semaphore. | |
624 | * Decremented when an ordered extent that represents an IO against this | |
625 | * block group's range is created (after it's added to its inode's | |
626 | * root's list of ordered extents) or immediately after the allocation | |
627 | * if it's a metadata extent or fallocate extent (for these cases we | |
628 | * don't create ordered extents). | |
629 | */ | |
630 | atomic_t reservations; | |
631 | ||
f78c436c FM |
632 | /* |
633 | * Incremented while holding the spinlock *lock* by a task checking if | |
634 | * it can perform a nocow write (incremented if the value for the *ro* | |
635 | * field is 0). Decremented by such tasks once they create an ordered | |
636 | * extent or before that if some error happens before reaching that step. | |
637 | * This is to prevent races between block group relocation and nocow | |
638 | * writes through direct IO. | |
639 | */ | |
640 | atomic_t nocow_writers; | |
641 | ||
a5ed9182 OS |
642 | /* Lock for free space tree operations. */ |
643 | struct mutex free_space_lock; | |
644 | ||
645 | /* | |
646 | * Does the block group need to be added to the free space tree? | |
647 | * Protected by free_space_lock. | |
648 | */ | |
649 | int needs_free_space; | |
9078a3e1 | 650 | }; |
0b86a832 | 651 | |
097b8a7c JS |
652 | /* delayed seq elem */ |
653 | struct seq_list { | |
654 | struct list_head list; | |
655 | u64 seq; | |
656 | }; | |
657 | ||
3284da7b DS |
658 | #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } |
659 | ||
5d80366e JB |
660 | enum btrfs_orphan_cleanup_state { |
661 | ORPHAN_CLEANUP_STARTED = 1, | |
662 | ORPHAN_CLEANUP_DONE = 2, | |
663 | }; | |
664 | ||
53b381b3 DW |
665 | /* used by the raid56 code to lock stripes for read/modify/write */ |
666 | struct btrfs_stripe_hash { | |
667 | struct list_head hash_list; | |
668 | wait_queue_head_t wait; | |
669 | spinlock_t lock; | |
670 | }; | |
671 | ||
672 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
673 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
674 | struct list_head stripe_cache; |
675 | spinlock_t cache_lock; | |
676 | int cache_size; | |
677 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
678 | }; |
679 | ||
680 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
681 | ||
21c7e756 MX |
682 | void btrfs_init_async_reclaim_work(struct work_struct *work); |
683 | ||
097b8a7c | 684 | /* fs_info */ |
5d4f98a2 | 685 | struct reloc_control; |
0b86a832 | 686 | struct btrfs_device; |
8a4b83cc | 687 | struct btrfs_fs_devices; |
c9e9f97b | 688 | struct btrfs_balance_control; |
16cdcec7 | 689 | struct btrfs_delayed_root; |
9f5fae2f | 690 | struct btrfs_fs_info { |
5f39d397 | 691 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 692 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
693 | struct btrfs_root *extent_root; |
694 | struct btrfs_root *tree_root; | |
0b86a832 CM |
695 | struct btrfs_root *chunk_root; |
696 | struct btrfs_root *dev_root; | |
3de4586c | 697 | struct btrfs_root *fs_root; |
d20f7043 | 698 | struct btrfs_root *csum_root; |
416ac51d | 699 | struct btrfs_root *quota_root; |
f7a81ea4 | 700 | struct btrfs_root *uuid_root; |
a5ed9182 | 701 | struct btrfs_root *free_space_root; |
e02119d5 CM |
702 | |
703 | /* the log root tree is a directory of all the other log roots */ | |
704 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
705 | |
706 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 707 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 708 | |
0f9dd46c JB |
709 | /* block group cache stuff */ |
710 | spinlock_t block_group_cache_lock; | |
a1897fdd | 711 | u64 first_logical_byte; |
0f9dd46c JB |
712 | struct rb_root block_group_cache_tree; |
713 | ||
2bf64758 JB |
714 | /* keep track of unallocated space */ |
715 | spinlock_t free_chunk_lock; | |
716 | u64 free_chunk_space; | |
717 | ||
11833d66 YZ |
718 | struct extent_io_tree freed_extents[2]; |
719 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 720 | |
0b86a832 CM |
721 | /* logical->physical extent mapping */ |
722 | struct btrfs_mapping_tree mapping_tree; | |
723 | ||
16cdcec7 MX |
724 | /* |
725 | * block reservation for extent, checksum, root tree and | |
726 | * delayed dir index item | |
727 | */ | |
f0486c68 YZ |
728 | struct btrfs_block_rsv global_block_rsv; |
729 | /* block reservation for delay allocation */ | |
730 | struct btrfs_block_rsv delalloc_block_rsv; | |
731 | /* block reservation for metadata operations */ | |
732 | struct btrfs_block_rsv trans_block_rsv; | |
733 | /* block reservation for chunk tree */ | |
734 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
735 | /* block reservation for delayed operations */ |
736 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
737 | |
738 | struct btrfs_block_rsv empty_block_rsv; | |
739 | ||
293ffd5f | 740 | u64 generation; |
15ee9bc7 | 741 | u64 last_trans_committed; |
0a2b2a84 | 742 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
743 | |
744 | /* | |
745 | * this is updated to the current trans every time a full commit | |
746 | * is required instead of the faster short fsync log commits | |
747 | */ | |
748 | u64 last_trans_log_full_commit; | |
25cd999e | 749 | unsigned long mount_opt; |
572d9ab7 DS |
750 | /* |
751 | * Track requests for actions that need to be done during transaction | |
752 | * commit (like for some mount options). | |
753 | */ | |
754 | unsigned long pending_changes; | |
261507a0 | 755 | unsigned long compress_type:4; |
8b87dc17 | 756 | int commit_interval; |
8c6a3ee6 MX |
757 | /* |
758 | * It is a suggestive number, the read side is safe even it gets a | |
759 | * wrong number because we will write out the data into a regular | |
760 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
761 | * so it is also safe. | |
762 | */ | |
6f568d35 | 763 | u64 max_inline; |
c018daec MX |
764 | /* |
765 | * Protected by ->chunk_mutex and sb->s_umount. | |
766 | * | |
767 | * The reason that we use two lock to protect it is because only | |
768 | * remount and mount operations can change it and these two operations | |
769 | * are under sb->s_umount, but the read side (chunk allocation) can not | |
770 | * acquire sb->s_umount or the deadlock would happen. So we use two | |
771 | * locks to protect it. On the write side, we must acquire two locks, | |
772 | * and on the read side, we just need acquire one of them. | |
773 | */ | |
8f662a76 | 774 | u64 alloc_start; |
79154b1b | 775 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 776 | wait_queue_head_t transaction_throttle; |
f9295749 | 777 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 778 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 779 | wait_queue_head_t async_submit_wait; |
e02119d5 | 780 | |
ceda0864 MX |
781 | /* |
782 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
783 | * when they are updated. | |
784 | * | |
785 | * Because we do not clear the flags for ever, so we needn't use | |
786 | * the lock on the read side. | |
787 | * | |
788 | * We also needn't use the lock when we mount the fs, because | |
789 | * there is no other task which will update the flag. | |
790 | */ | |
791 | spinlock_t super_lock; | |
6c41761f DS |
792 | struct btrfs_super_block *super_copy; |
793 | struct btrfs_super_block *super_for_commit; | |
0b86a832 | 794 | struct block_device *__bdev; |
e20d96d6 | 795 | struct super_block *sb; |
d98237b3 | 796 | struct inode *btree_inode; |
04160088 | 797 | struct backing_dev_info bdi; |
e02119d5 | 798 | struct mutex tree_log_mutex; |
a74a4b97 CM |
799 | struct mutex transaction_kthread_mutex; |
800 | struct mutex cleaner_mutex; | |
925baedd | 801 | struct mutex chunk_mutex; |
7d9eb12c | 802 | struct mutex volume_mutex; |
53b381b3 | 803 | |
1bbc621e CM |
804 | /* |
805 | * this is taken to make sure we don't set block groups ro after | |
806 | * the free space cache has been allocated on them | |
807 | */ | |
808 | struct mutex ro_block_group_mutex; | |
809 | ||
53b381b3 DW |
810 | /* this is used during read/modify/write to make sure |
811 | * no two ios are trying to mod the same stripe at the same | |
812 | * time | |
813 | */ | |
814 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
815 | ||
5a3f23d5 CM |
816 | /* |
817 | * this protects the ordered operations list only while we are | |
818 | * processing all of the entries on it. This way we make | |
819 | * sure the commit code doesn't find the list temporarily empty | |
820 | * because another function happens to be doing non-waiting preflush | |
821 | * before jumping into the main commit. | |
822 | */ | |
823 | struct mutex ordered_operations_mutex; | |
9ffba8cd | 824 | |
9e351cc8 | 825 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 826 | |
c71bf099 | 827 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 828 | |
c71bf099 | 829 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
830 | struct srcu_struct subvol_srcu; |
831 | ||
a4abeea4 | 832 | spinlock_t trans_lock; |
7585717f CM |
833 | /* |
834 | * the reloc mutex goes with the trans lock, it is taken | |
835 | * during commit to protect us from the relocation code | |
836 | */ | |
837 | struct mutex reloc_mutex; | |
838 | ||
8fd17795 | 839 | struct list_head trans_list; |
facda1e7 | 840 | struct list_head dead_roots; |
11833d66 | 841 | struct list_head caching_block_groups; |
e02119d5 | 842 | |
24bbcf04 YZ |
843 | spinlock_t delayed_iput_lock; |
844 | struct list_head delayed_iputs; | |
c2d6cb16 | 845 | struct mutex cleaner_delayed_iput_mutex; |
24bbcf04 | 846 | |
f29021b2 JS |
847 | /* this protects tree_mod_seq_list */ |
848 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 849 | atomic64_t tree_mod_seq; |
f29021b2 JS |
850 | struct list_head tree_mod_seq_list; |
851 | ||
852 | /* this protects tree_mod_log */ | |
853 | rwlock_t tree_mod_log_lock; | |
854 | struct rb_root tree_mod_log; | |
855 | ||
cb03c743 | 856 | atomic_t nr_async_submits; |
8c8bee1d | 857 | atomic_t async_submit_draining; |
0986fe9e | 858 | atomic_t nr_async_bios; |
771ed689 | 859 | atomic_t async_delalloc_pages; |
a4abeea4 | 860 | atomic_t open_ioctl_trans; |
ce9adaa5 | 861 | |
3eaa2885 | 862 | /* |
199c2a9c | 863 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 864 | */ |
199c2a9c | 865 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
866 | |
867 | /* | |
199c2a9c MX |
868 | * all fs/file tree roots in which there are data=ordered extents |
869 | * pending writeback are added into this list. | |
870 | * | |
5a3f23d5 CM |
871 | * these can span multiple transactions and basically include |
872 | * every dirty data page that isn't from nodatacow | |
873 | */ | |
199c2a9c | 874 | struct list_head ordered_roots; |
5a3f23d5 | 875 | |
573bfb72 | 876 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
877 | spinlock_t delalloc_root_lock; |
878 | /* all fs/file tree roots that have delalloc inodes. */ | |
879 | struct list_head delalloc_roots; | |
3eaa2885 | 880 | |
8b712842 CM |
881 | /* |
882 | * there is a pool of worker threads for checksumming during writes | |
883 | * and a pool for checksumming after reads. This is because readers | |
884 | * can run with FS locks held, and the writers may be waiting for | |
885 | * those locks. We don't want ordering in the pending list to cause | |
886 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
887 | * |
888 | * A third pool does submit_bio to avoid deadlocking with the other | |
889 | * two | |
8b712842 | 890 | */ |
d458b054 QW |
891 | struct btrfs_workqueue *workers; |
892 | struct btrfs_workqueue *delalloc_workers; | |
893 | struct btrfs_workqueue *flush_workers; | |
894 | struct btrfs_workqueue *endio_workers; | |
895 | struct btrfs_workqueue *endio_meta_workers; | |
896 | struct btrfs_workqueue *endio_raid56_workers; | |
8b110e39 | 897 | struct btrfs_workqueue *endio_repair_workers; |
d458b054 QW |
898 | struct btrfs_workqueue *rmw_workers; |
899 | struct btrfs_workqueue *endio_meta_write_workers; | |
900 | struct btrfs_workqueue *endio_write_workers; | |
901 | struct btrfs_workqueue *endio_freespace_worker; | |
902 | struct btrfs_workqueue *submit_workers; | |
903 | struct btrfs_workqueue *caching_workers; | |
904 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 905 | |
247e743c CM |
906 | /* |
907 | * fixup workers take dirty pages that didn't properly go through | |
908 | * the cow mechanism and make them safe to write. It happens | |
909 | * for the sys_munmap function call path | |
910 | */ | |
d458b054 QW |
911 | struct btrfs_workqueue *fixup_workers; |
912 | struct btrfs_workqueue *delayed_workers; | |
a79b7d4b CM |
913 | |
914 | /* the extent workers do delayed refs on the extent allocation tree */ | |
915 | struct btrfs_workqueue *extent_workers; | |
a74a4b97 CM |
916 | struct task_struct *transaction_kthread; |
917 | struct task_struct *cleaner_kthread; | |
4543df7e | 918 | int thread_pool_size; |
8b712842 | 919 | |
6ab0a202 | 920 | struct kobject *space_info_kobj; |
e66f709b | 921 | int do_barriers; |
facda1e7 | 922 | int closing; |
e02119d5 | 923 | int log_root_recovering; |
47ab2a6c | 924 | int open; |
9f5fae2f | 925 | |
324ae4df | 926 | u64 total_pinned; |
b9473439 | 927 | |
e2d84521 MX |
928 | /* used to keep from writing metadata until there is a nice batch */ |
929 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 930 | struct percpu_counter delalloc_bytes; |
e2d84521 | 931 | s32 dirty_metadata_batch; |
963d678b MX |
932 | s32 delalloc_batch; |
933 | ||
0b86a832 CM |
934 | struct list_head dirty_cowonly_roots; |
935 | ||
8a4b83cc | 936 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
937 | |
938 | /* | |
939 | * the space_info list is almost entirely read only. It only changes | |
940 | * when we add a new raid type to the FS, and that happens | |
941 | * very rarely. RCU is used to protect it. | |
942 | */ | |
6324fbf3 | 943 | struct list_head space_info; |
4184ea7f | 944 | |
b4d7c3c9 LZ |
945 | struct btrfs_space_info *data_sinfo; |
946 | ||
5d4f98a2 YZ |
947 | struct reloc_control *reloc_ctl; |
948 | ||
fa9c0d79 CM |
949 | /* data_alloc_cluster is only used in ssd mode */ |
950 | struct btrfs_free_cluster data_alloc_cluster; | |
951 | ||
952 | /* all metadata allocations go through this cluster */ | |
953 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 954 | |
4cb5300b CM |
955 | /* auto defrag inodes go here */ |
956 | spinlock_t defrag_inodes_lock; | |
957 | struct rb_root defrag_inodes; | |
958 | atomic_t defrag_running; | |
959 | ||
de98ced9 MX |
960 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
961 | seqlock_t profiles_lock; | |
a46d11a8 ID |
962 | /* |
963 | * these three are in extended format (availability of single | |
964 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
965 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
966 | */ | |
d18a2c44 CM |
967 | u64 avail_data_alloc_bits; |
968 | u64 avail_metadata_alloc_bits; | |
969 | u64 avail_system_alloc_bits; | |
788f20eb | 970 | |
c9e9f97b ID |
971 | /* restriper state */ |
972 | spinlock_t balance_lock; | |
973 | struct mutex balance_mutex; | |
837d5b6e ID |
974 | atomic_t balance_running; |
975 | atomic_t balance_pause_req; | |
a7e99c69 | 976 | atomic_t balance_cancel_req; |
c9e9f97b | 977 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 978 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 979 | |
97e728d4 JB |
980 | unsigned data_chunk_allocations; |
981 | unsigned metadata_ratio; | |
982 | ||
788f20eb | 983 | void *bdev_holder; |
acce952b | 984 | |
a2de733c AJ |
985 | /* private scrub information */ |
986 | struct mutex scrub_lock; | |
987 | atomic_t scrubs_running; | |
988 | atomic_t scrub_pause_req; | |
989 | atomic_t scrubs_paused; | |
990 | atomic_t scrub_cancel_req; | |
991 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 992 | int scrub_workers_refcnt; |
d458b054 QW |
993 | struct btrfs_workqueue *scrub_workers; |
994 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
995 | struct btrfs_workqueue *scrub_nocow_workers; | |
20b2e302 | 996 | struct btrfs_workqueue *scrub_parity_workers; |
a2de733c | 997 | |
21adbd5c SB |
998 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
999 | u32 check_integrity_print_mask; | |
1000 | #endif | |
416ac51d AJ |
1001 | /* |
1002 | * quota information | |
1003 | */ | |
1004 | unsigned int quota_enabled:1; | |
1005 | ||
1006 | /* | |
1007 | * quota_enabled only changes state after a commit. This holds the | |
1008 | * next state. | |
1009 | */ | |
1010 | unsigned int pending_quota_state:1; | |
1011 | ||
1012 | /* is qgroup tracking in a consistent state? */ | |
1013 | u64 qgroup_flags; | |
1014 | ||
1015 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1016 | struct rb_root qgroup_tree; | |
fcebe456 | 1017 | struct rb_root qgroup_op_tree; |
416ac51d | 1018 | spinlock_t qgroup_lock; |
fcebe456 JB |
1019 | spinlock_t qgroup_op_lock; |
1020 | atomic_t qgroup_op_seq; | |
416ac51d | 1021 | |
1e8f9158 WS |
1022 | /* |
1023 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1024 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1025 | */ | |
1026 | struct ulist *qgroup_ulist; | |
1027 | ||
f2f6ed3d WS |
1028 | /* protect user change for quota operations */ |
1029 | struct mutex qgroup_ioctl_lock; | |
1030 | ||
416ac51d AJ |
1031 | /* list of dirty qgroups to be written at next commit */ |
1032 | struct list_head dirty_qgroups; | |
1033 | ||
e69bcee3 | 1034 | /* used by qgroup for an efficient tree traversal */ |
416ac51d | 1035 | u64 qgroup_seq; |
21adbd5c | 1036 | |
2f232036 JS |
1037 | /* qgroup rescan items */ |
1038 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1039 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1040 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1041 | struct completion qgroup_rescan_completion; |
b382a324 | 1042 | struct btrfs_work qgroup_rescan_work; |
2f232036 | 1043 | |
acce952b | 1044 | /* filesystem state */ |
87533c47 | 1045 | unsigned long fs_state; |
16cdcec7 MX |
1046 | |
1047 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1048 | |
90519d66 AJ |
1049 | /* readahead tree */ |
1050 | spinlock_t reada_lock; | |
1051 | struct radix_tree_root reada_tree; | |
531f4b1a | 1052 | |
2fefd558 ZL |
1053 | /* readahead works cnt */ |
1054 | atomic_t reada_works_cnt; | |
1055 | ||
f28491e0 JB |
1056 | /* Extent buffer radix tree */ |
1057 | spinlock_t buffer_lock; | |
1058 | struct radix_tree_root buffer_radix; | |
1059 | ||
af31f5e5 CM |
1060 | /* next backup root to be overwritten */ |
1061 | int backup_root_index; | |
5af3e8cc SB |
1062 | |
1063 | int num_tolerated_disk_barrier_failures; | |
e922e087 SB |
1064 | |
1065 | /* device replace state */ | |
1066 | struct btrfs_dev_replace dev_replace; | |
5ac00add SB |
1067 | |
1068 | atomic_t mutually_exclusive_operation_running; | |
803b2f54 | 1069 | |
c404e0dc MX |
1070 | struct percpu_counter bio_counter; |
1071 | wait_queue_head_t replace_wait; | |
1072 | ||
803b2f54 | 1073 | struct semaphore uuid_tree_rescan_sem; |
70f80175 | 1074 | unsigned int update_uuid_tree_gen:1; |
21c7e756 MX |
1075 | |
1076 | /* Used to reclaim the metadata space in the background. */ | |
1077 | struct work_struct async_reclaim_work; | |
47ab2a6c JB |
1078 | |
1079 | spinlock_t unused_bgs_lock; | |
1080 | struct list_head unused_bgs; | |
d4b450cd | 1081 | struct mutex unused_bg_unpin_mutex; |
67c5e7d4 | 1082 | struct mutex delete_unused_bgs_mutex; |
f667aef6 QW |
1083 | |
1084 | /* For btrfs to record security options */ | |
1085 | struct security_mnt_opts security_opts; | |
04216820 FM |
1086 | |
1087 | /* | |
1088 | * Chunks that can't be freed yet (under a trim/discard operation) | |
1089 | * and will be latter freed. Protected by fs_info->chunk_mutex. | |
1090 | */ | |
1091 | struct list_head pinned_chunks; | |
511711af CM |
1092 | |
1093 | int creating_free_space_tree; | |
324ae4df | 1094 | }; |
0b86a832 | 1095 | |
8257b2dc MX |
1096 | struct btrfs_subvolume_writers { |
1097 | struct percpu_counter counter; | |
1098 | wait_queue_head_t wait; | |
1099 | }; | |
1100 | ||
27cdeb70 MX |
1101 | /* |
1102 | * The state of btrfs root | |
1103 | */ | |
1104 | /* | |
1105 | * btrfs_record_root_in_trans is a multi-step process, | |
1106 | * and it can race with the balancing code. But the | |
1107 | * race is very small, and only the first time the root | |
1108 | * is added to each transaction. So IN_TRANS_SETUP | |
1109 | * is used to tell us when more checks are required | |
1110 | */ | |
1111 | #define BTRFS_ROOT_IN_TRANS_SETUP 0 | |
1112 | #define BTRFS_ROOT_REF_COWS 1 | |
1113 | #define BTRFS_ROOT_TRACK_DIRTY 2 | |
1114 | #define BTRFS_ROOT_IN_RADIX 3 | |
1115 | #define BTRFS_ROOT_DUMMY_ROOT 4 | |
1116 | #define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 5 | |
1117 | #define BTRFS_ROOT_DEFRAG_RUNNING 6 | |
1118 | #define BTRFS_ROOT_FORCE_COW 7 | |
1119 | #define BTRFS_ROOT_MULTI_LOG_TASKS 8 | |
e7070be1 | 1120 | #define BTRFS_ROOT_DIRTY 9 |
27cdeb70 | 1121 | |
9f5fae2f CM |
1122 | /* |
1123 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1124 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1125 | */ |
1126 | struct btrfs_root { | |
5f39d397 | 1127 | struct extent_buffer *node; |
925baedd | 1128 | |
5f39d397 | 1129 | struct extent_buffer *commit_root; |
e02119d5 | 1130 | struct btrfs_root *log_root; |
1a40e23b | 1131 | struct btrfs_root *reloc_root; |
31153d81 | 1132 | |
27cdeb70 | 1133 | unsigned long state; |
62e2749e CM |
1134 | struct btrfs_root_item root_item; |
1135 | struct btrfs_key root_key; | |
9f5fae2f | 1136 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1137 | struct extent_io_tree dirty_log_pages; |
1138 | ||
a2135011 | 1139 | struct mutex objectid_mutex; |
7237f183 | 1140 | |
f0486c68 YZ |
1141 | spinlock_t accounting_lock; |
1142 | struct btrfs_block_rsv *block_rsv; | |
1143 | ||
581bb050 | 1144 | /* free ino cache stuff */ |
581bb050 | 1145 | struct btrfs_free_space_ctl *free_ino_ctl; |
57cdc8db DS |
1146 | enum btrfs_caching_type ino_cache_state; |
1147 | spinlock_t ino_cache_lock; | |
1148 | wait_queue_head_t ino_cache_wait; | |
581bb050 | 1149 | struct btrfs_free_space_ctl *free_ino_pinned; |
57cdc8db DS |
1150 | u64 ino_cache_progress; |
1151 | struct inode *ino_cache_inode; | |
581bb050 | 1152 | |
e02119d5 | 1153 | struct mutex log_mutex; |
7237f183 YZ |
1154 | wait_queue_head_t log_writer_wait; |
1155 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1156 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1157 | atomic_t log_writers; |
1158 | atomic_t log_commit[2]; | |
2ecb7923 | 1159 | atomic_t log_batch; |
bb14a59b | 1160 | int log_transid; |
d1433deb MX |
1161 | /* No matter the commit succeeds or not*/ |
1162 | int log_transid_committed; | |
1163 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1164 | int last_log_commit; |
ff782e0a | 1165 | pid_t log_start_pid; |
ea8c2819 | 1166 | |
0f7d52f4 CM |
1167 | u64 objectid; |
1168 | u64 last_trans; | |
5f39d397 CM |
1169 | |
1170 | /* data allocations are done in sectorsize units */ | |
1171 | u32 sectorsize; | |
1172 | ||
1173 | /* node allocations are done in nodesize units */ | |
1174 | u32 nodesize; | |
1175 | ||
87ee04eb CM |
1176 | u32 stripesize; |
1177 | ||
9f5fae2f | 1178 | u32 type; |
13a8a7c8 YZ |
1179 | |
1180 | u64 highest_objectid; | |
7585717f | 1181 | |
0d4cf4e6 | 1182 | /* only used with CONFIG_BTRFS_FS_RUN_SANITY_TESTS is enabled */ |
faa2dbf0 | 1183 | u64 alloc_bytenr; |
faa2dbf0 | 1184 | |
3f157a2f | 1185 | u64 defrag_trans_start; |
6702ed49 | 1186 | struct btrfs_key defrag_progress; |
0ef3e66b | 1187 | struct btrfs_key defrag_max; |
58176a96 | 1188 | char *name; |
0b86a832 CM |
1189 | |
1190 | /* the dirty list is only used by non-reference counted roots */ | |
1191 | struct list_head dirty_list; | |
7b128766 | 1192 | |
5d4f98a2 YZ |
1193 | struct list_head root_list; |
1194 | ||
2ab28f32 JB |
1195 | spinlock_t log_extents_lock[2]; |
1196 | struct list_head logged_list[2]; | |
1197 | ||
d68fc57b | 1198 | spinlock_t orphan_lock; |
8a35d95f | 1199 | atomic_t orphan_inodes; |
d68fc57b | 1200 | struct btrfs_block_rsv *orphan_block_rsv; |
d68fc57b | 1201 | int orphan_cleanup_state; |
3394e160 | 1202 | |
5d4f98a2 YZ |
1203 | spinlock_t inode_lock; |
1204 | /* red-black tree that keeps track of in-memory inodes */ | |
1205 | struct rb_root inode_tree; | |
1206 | ||
16cdcec7 MX |
1207 | /* |
1208 | * radix tree that keeps track of delayed nodes of every inode, | |
1209 | * protected by inode_lock | |
1210 | */ | |
1211 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1212 | /* |
1213 | * right now this just gets used so that a root has its own devid | |
1214 | * for stat. It may be used for more later | |
1215 | */ | |
0ee5dc67 | 1216 | dev_t anon_dev; |
f1ebcc74 | 1217 | |
5f3ab90a | 1218 | spinlock_t root_item_lock; |
b0feb9d9 | 1219 | atomic_t refs; |
eb73c1b7 | 1220 | |
573bfb72 | 1221 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1222 | spinlock_t delalloc_lock; |
1223 | /* | |
1224 | * all of the inodes that have delalloc bytes. It is possible for | |
1225 | * this list to be empty even when there is still dirty data=ordered | |
1226 | * extents waiting to finish IO. | |
1227 | */ | |
1228 | struct list_head delalloc_inodes; | |
1229 | struct list_head delalloc_root; | |
1230 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1231 | |
1232 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1233 | /* |
1234 | * this is used by the balancing code to wait for all the pending | |
1235 | * ordered extents | |
1236 | */ | |
1237 | spinlock_t ordered_extent_lock; | |
1238 | ||
1239 | /* | |
1240 | * all of the data=ordered extents pending writeback | |
1241 | * these can span multiple transactions and basically include | |
1242 | * every dirty data page that isn't from nodatacow | |
1243 | */ | |
1244 | struct list_head ordered_extents; | |
1245 | struct list_head ordered_root; | |
1246 | u64 nr_ordered_extents; | |
2c686537 DS |
1247 | |
1248 | /* | |
1249 | * Number of currently running SEND ioctls to prevent | |
1250 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1251 | */ | |
1252 | int send_in_progress; | |
8257b2dc MX |
1253 | struct btrfs_subvolume_writers *subv_writers; |
1254 | atomic_t will_be_snapshoted; | |
55eeaf05 QW |
1255 | |
1256 | /* For qgroup metadata space reserve */ | |
1257 | atomic_t qgroup_meta_rsv; | |
62e2749e CM |
1258 | }; |
1259 | ||
0942caa3 DS |
1260 | /* |
1261 | * Flags for mount options. | |
1262 | * | |
1263 | * Note: don't forget to add new options to btrfs_show_options() | |
1264 | */ | |
21ad10cf CM |
1265 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
1266 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
1267 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 1268 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 1269 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 1270 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 1271 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 1272 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 1273 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 1274 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 1275 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 1276 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 1277 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 1278 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 1279 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 1280 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 1281 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 1282 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
8dcddfa0 | 1283 | #define BTRFS_MOUNT_USEBACKUPROOT (1 << 18) |
9555c6c1 | 1284 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
1285 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
1286 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 1287 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 1288 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
d0bd4560 JB |
1289 | #define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24) |
1290 | #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) | |
f7d3d2f9 | 1291 | #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) |
96da0919 | 1292 | #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) |
b6cda9bc | 1293 | |
8b87dc17 | 1294 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
f7e98a7f | 1295 | #define BTRFS_DEFAULT_MAX_INLINE (2048) |
8b87dc17 | 1296 | |
b6cda9bc CM |
1297 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
1298 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 1299 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
b6cda9bc CM |
1300 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ |
1301 | BTRFS_MOUNT_##opt) | |
572d9ab7 | 1302 | |
9d89ce65 WS |
1303 | #define btrfs_set_and_info(root, opt, fmt, args...) \ |
1304 | { \ | |
1305 | if (!btrfs_test_opt(root, opt)) \ | |
1306 | btrfs_info(root->fs_info, fmt, ##args); \ | |
1307 | btrfs_set_opt(root->fs_info->mount_opt, opt); \ | |
1308 | } | |
1309 | ||
1310 | #define btrfs_clear_and_info(root, opt, fmt, args...) \ | |
1311 | { \ | |
1312 | if (btrfs_test_opt(root, opt)) \ | |
1313 | btrfs_info(root->fs_info, fmt, ##args); \ | |
1314 | btrfs_clear_opt(root->fs_info->mount_opt, opt); \ | |
1315 | } | |
1316 | ||
d0bd4560 JB |
1317 | #ifdef CONFIG_BTRFS_DEBUG |
1318 | static inline int | |
1319 | btrfs_should_fragment_free_space(struct btrfs_root *root, | |
1320 | struct btrfs_block_group_cache *block_group) | |
1321 | { | |
1322 | return (btrfs_test_opt(root, FRAGMENT_METADATA) && | |
1323 | block_group->flags & BTRFS_BLOCK_GROUP_METADATA) || | |
1324 | (btrfs_test_opt(root, FRAGMENT_DATA) && | |
1325 | block_group->flags & BTRFS_BLOCK_GROUP_DATA); | |
1326 | } | |
1327 | #endif | |
1328 | ||
572d9ab7 DS |
1329 | /* |
1330 | * Requests for changes that need to be done during transaction commit. | |
1331 | * | |
1332 | * Internal mount options that are used for special handling of the real | |
1333 | * mount options (eg. cannot be set during remount and have to be set during | |
1334 | * transaction commit) | |
1335 | */ | |
1336 | ||
7e1876ac DS |
1337 | #define BTRFS_PENDING_SET_INODE_MAP_CACHE (0) |
1338 | #define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1) | |
d51033d0 | 1339 | #define BTRFS_PENDING_COMMIT (2) |
7e1876ac | 1340 | |
572d9ab7 DS |
1341 | #define btrfs_test_pending(info, opt) \ |
1342 | test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1343 | #define btrfs_set_pending(info, opt) \ | |
1344 | set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1345 | #define btrfs_clear_pending(info, opt) \ | |
1346 | clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes) | |
1347 | ||
1348 | /* | |
1349 | * Helpers for setting pending mount option changes. | |
1350 | * | |
1351 | * Expects corresponding macros | |
1352 | * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name | |
1353 | */ | |
1354 | #define btrfs_set_pending_and_info(info, opt, fmt, args...) \ | |
1355 | do { \ | |
1356 | if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1357 | btrfs_info((info), fmt, ##args); \ | |
1358 | btrfs_set_pending((info), SET_##opt); \ | |
1359 | btrfs_clear_pending((info), CLEAR_##opt); \ | |
1360 | } \ | |
1361 | } while(0) | |
1362 | ||
1363 | #define btrfs_clear_pending_and_info(info, opt, fmt, args...) \ | |
1364 | do { \ | |
1365 | if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \ | |
1366 | btrfs_info((info), fmt, ##args); \ | |
1367 | btrfs_set_pending((info), CLEAR_##opt); \ | |
1368 | btrfs_clear_pending((info), SET_##opt); \ | |
1369 | } \ | |
1370 | } while(0) | |
1371 | ||
b98b6767 Y |
1372 | /* |
1373 | * Inode flags | |
1374 | */ | |
fdebe2bd Y |
1375 | #define BTRFS_INODE_NODATASUM (1 << 0) |
1376 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
1377 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 1378 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 1379 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
1380 | #define BTRFS_INODE_SYNC (1 << 5) |
1381 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
1382 | #define BTRFS_INODE_APPEND (1 << 7) | |
1383 | #define BTRFS_INODE_NODUMP (1 << 8) | |
1384 | #define BTRFS_INODE_NOATIME (1 << 9) | |
1385 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 1386 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 1387 | |
08fe4db1 LZ |
1388 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
1389 | ||
cfed81a0 CM |
1390 | struct btrfs_map_token { |
1391 | struct extent_buffer *eb; | |
1392 | char *kaddr; | |
1393 | unsigned long offset; | |
1394 | }; | |
1395 | ||
2e78c927 CR |
1396 | #define BTRFS_BYTES_TO_BLKS(fs_info, bytes) \ |
1397 | ((bytes) >> (fs_info)->sb->s_blocksize_bits) | |
1398 | ||
cfed81a0 CM |
1399 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) |
1400 | { | |
ad914559 | 1401 | token->kaddr = NULL; |
cfed81a0 CM |
1402 | } |
1403 | ||
5f39d397 CM |
1404 | /* some macros to generate set/get funcs for the struct fields. This |
1405 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
1406 | * one for u8: | |
1407 | */ | |
1408 | #define le8_to_cpu(v) (v) | |
1409 | #define cpu_to_le8(v) (v) | |
1410 | #define __le8 u8 | |
1411 | ||
1412 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
1413 | read_extent_buffer(eb, (char *)(result), \ | |
1414 | ((unsigned long)(ptr)) + \ | |
1415 | offsetof(type, member), \ | |
1416 | sizeof(((type *)0)->member))) | |
1417 | ||
1418 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
1419 | write_extent_buffer(eb, (char *)(result), \ | |
1420 | ((unsigned long)(ptr)) + \ | |
1421 | offsetof(type, member), \ | |
1422 | sizeof(((type *)0)->member))) | |
1423 | ||
18077bb4 LZ |
1424 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
1425 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1426 | unsigned long off, \ | |
1427 | struct btrfs_map_token *token); \ | |
1428 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
1429 | unsigned long off, u##bits val, \ | |
1430 | struct btrfs_map_token *token); \ | |
1431 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ | |
1432 | unsigned long off) \ | |
1433 | { \ | |
1434 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
1435 | } \ | |
1436 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ | |
1437 | unsigned long off, u##bits val) \ | |
1438 | { \ | |
1439 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
1440 | } | |
1441 | ||
1442 | DECLARE_BTRFS_SETGET_BITS(8) | |
1443 | DECLARE_BTRFS_SETGET_BITS(16) | |
1444 | DECLARE_BTRFS_SETGET_BITS(32) | |
1445 | DECLARE_BTRFS_SETGET_BITS(64) | |
1446 | ||
5f39d397 | 1447 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
18077bb4 LZ |
1448 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
1449 | { \ | |
1450 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1451 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
1452 | } \ | |
1453 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
1454 | u##bits val) \ | |
1455 | { \ | |
1456 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1457 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
1458 | } \ | |
1459 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ | |
1460 | struct btrfs_map_token *token) \ | |
1461 | { \ | |
1462 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1463 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
1464 | } \ | |
1465 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
1466 | type *s, u##bits val, \ | |
1467 | struct btrfs_map_token *token) \ | |
1468 | { \ | |
1469 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
1470 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
1471 | } | |
5f39d397 CM |
1472 | |
1473 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
1474 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
1475 | { \ | |
727011e0 | 1476 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1477 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 1478 | return res; \ |
5f39d397 CM |
1479 | } \ |
1480 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
1481 | u##bits val) \ | |
1482 | { \ | |
727011e0 | 1483 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 1484 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 1485 | } |
9078a3e1 | 1486 | |
5f39d397 CM |
1487 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
1488 | static inline u##bits btrfs_##name(type *s) \ | |
1489 | { \ | |
1490 | return le##bits##_to_cpu(s->member); \ | |
1491 | } \ | |
1492 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
1493 | { \ | |
1494 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
1495 | } |
1496 | ||
0b86a832 CM |
1497 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
1498 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
1499 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
1500 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
1501 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
1502 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
1503 | start_offset, 64); | |
0b86a832 CM |
1504 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
1505 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1506 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
1507 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
1508 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 1509 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 1510 | |
8a4b83cc CM |
1511 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
1512 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
1513 | total_bytes, 64); | |
1514 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
1515 | bytes_used, 64); | |
1516 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
1517 | io_align, 32); | |
1518 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
1519 | io_width, 32); | |
1520 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
1521 | sector_size, 32); | |
1522 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
1523 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
1524 | dev_group, 32); | |
1525 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
1526 | seek_speed, 8); | |
1527 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
1528 | bandwidth, 8); | |
2b82032c YZ |
1529 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
1530 | generation, 64); | |
8a4b83cc | 1531 | |
410ba3a2 | 1532 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 1533 | { |
410ba3a2 | 1534 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
1535 | } |
1536 | ||
1473b24e | 1537 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 1538 | { |
1473b24e | 1539 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
1540 | } |
1541 | ||
e17cade2 | 1542 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
1543 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
1544 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
1545 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
1546 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
1547 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
1548 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
1549 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 1550 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
1551 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
1552 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
1553 | ||
e17cade2 CM |
1554 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
1555 | { | |
1556 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
1557 | } | |
1558 | ||
1559 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
1560 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
1561 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
1562 | stripe_len, 64); | |
1563 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
1564 | io_align, 32); | |
1565 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
1566 | io_width, 32); | |
1567 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
1568 | sector_size, 32); | |
1569 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
1570 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
1571 | num_stripes, 16); | |
321aecc6 CM |
1572 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
1573 | sub_stripes, 16); | |
0b86a832 CM |
1574 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
1575 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
1576 | ||
1577 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
1578 | int nr) | |
1579 | { | |
1580 | unsigned long offset = (unsigned long)c; | |
1581 | offset += offsetof(struct btrfs_chunk, stripe); | |
1582 | offset += nr * sizeof(struct btrfs_stripe); | |
1583 | return (struct btrfs_stripe *)offset; | |
1584 | } | |
1585 | ||
a443755f CM |
1586 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
1587 | { | |
1588 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
1589 | } | |
1590 | ||
0b86a832 CM |
1591 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
1592 | struct btrfs_chunk *c, int nr) | |
1593 | { | |
1594 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
1595 | } | |
1596 | ||
0b86a832 CM |
1597 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
1598 | struct btrfs_chunk *c, int nr) | |
1599 | { | |
1600 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
1601 | } | |
1602 | ||
5f39d397 CM |
1603 | /* struct btrfs_block_group_item */ |
1604 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
1605 | used, 64); | |
1606 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
1607 | used, 64); | |
0b86a832 CM |
1608 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
1609 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
1610 | |
1611 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
1612 | struct btrfs_block_group_item, chunk_objectid, 64); |
1613 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
1614 | struct btrfs_block_group_item, flags, 64); | |
1615 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
1616 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 1617 | |
208acb8c OS |
1618 | /* struct btrfs_free_space_info */ |
1619 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
1620 | extent_count, 32); | |
1621 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
1622 | ||
3954401f CM |
1623 | /* struct btrfs_inode_ref */ |
1624 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 1625 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 1626 | |
f186373f MF |
1627 | /* struct btrfs_inode_extref */ |
1628 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
1629 | parent_objectid, 64); | |
1630 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
1631 | name_len, 16); | |
1632 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
1633 | ||
5f39d397 CM |
1634 | /* struct btrfs_inode_item */ |
1635 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 1636 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 1637 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 1638 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 1639 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
1640 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
1641 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1642 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
1643 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
1644 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 1645 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 1646 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
1647 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
1648 | generation, 64); | |
1649 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
1650 | sequence, 64); | |
1651 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
1652 | transid, 64); | |
1653 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
1654 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
1655 | nbytes, 64); | |
1656 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
1657 | block_group, 64); | |
1658 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
1659 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
1660 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
1661 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
1662 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
1663 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
0b86a832 CM |
1664 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
1665 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
1666 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
1667 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 1668 | |
0b86a832 | 1669 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
1670 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
1671 | chunk_tree, 64); | |
1672 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
1673 | chunk_objectid, 64); | |
1674 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
1675 | chunk_offset, 64); | |
0b86a832 CM |
1676 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
1677 | ||
231e88f4 | 1678 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
1679 | { |
1680 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 1681 | return (unsigned long)dev + ptr; |
e17cade2 CM |
1682 | } |
1683 | ||
5d4f98a2 YZ |
1684 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
1685 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
1686 | generation, 64); | |
1687 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 1688 | |
5d4f98a2 YZ |
1689 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
1690 | ||
1691 | ||
1692 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
1693 | ||
1694 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
1695 | struct btrfs_tree_block_info *item, | |
1696 | struct btrfs_disk_key *key) | |
1697 | { | |
1698 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1699 | } | |
1700 | ||
1701 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
1702 | struct btrfs_tree_block_info *item, | |
1703 | struct btrfs_disk_key *key) | |
1704 | { | |
1705 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
1706 | } | |
e20d96d6 | 1707 | |
5d4f98a2 YZ |
1708 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
1709 | root, 64); | |
1710 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
1711 | objectid, 64); | |
1712 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
1713 | offset, 64); | |
1714 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
1715 | count, 32); | |
1716 | ||
1717 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
1718 | count, 32); | |
1719 | ||
1720 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
1721 | type, 8); | |
1722 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
1723 | offset, 64); | |
1724 | ||
1725 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
1726 | { | |
1727 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
1728 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
1729 | return sizeof(struct btrfs_extent_inline_ref); | |
1730 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
1731 | return sizeof(struct btrfs_shared_data_ref) + | |
1732 | sizeof(struct btrfs_extent_inline_ref); | |
1733 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
1734 | return sizeof(struct btrfs_extent_data_ref) + | |
1735 | offsetof(struct btrfs_extent_inline_ref, offset); | |
1736 | BUG(); | |
1737 | return 0; | |
1738 | } | |
1739 | ||
1740 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
1741 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
1742 | generation, 64); | |
1743 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
1744 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 1745 | |
5f39d397 CM |
1746 | /* struct btrfs_node */ |
1747 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 1748 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
1749 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
1750 | blockptr, 64); | |
1751 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
1752 | generation, 64); | |
e20d96d6 | 1753 | |
5f39d397 | 1754 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 1755 | { |
5f39d397 CM |
1756 | unsigned long ptr; |
1757 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1758 | sizeof(struct btrfs_key_ptr) * nr; | |
1759 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
1760 | } |
1761 | ||
5f39d397 CM |
1762 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
1763 | int nr, u64 val) | |
cf27e1ee | 1764 | { |
5f39d397 CM |
1765 | unsigned long ptr; |
1766 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1767 | sizeof(struct btrfs_key_ptr) * nr; | |
1768 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
1769 | } |
1770 | ||
74493f7a CM |
1771 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
1772 | { | |
1773 | unsigned long ptr; | |
1774 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1775 | sizeof(struct btrfs_key_ptr) * nr; | |
1776 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
1777 | } | |
1778 | ||
1779 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
1780 | int nr, u64 val) | |
1781 | { | |
1782 | unsigned long ptr; | |
1783 | ptr = offsetof(struct btrfs_node, ptrs) + | |
1784 | sizeof(struct btrfs_key_ptr) * nr; | |
1785 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
1786 | } | |
1787 | ||
810191ff | 1788 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 1789 | { |
5f39d397 CM |
1790 | return offsetof(struct btrfs_node, ptrs) + |
1791 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
1792 | } |
1793 | ||
e644d021 CM |
1794 | void btrfs_node_key(struct extent_buffer *eb, |
1795 | struct btrfs_disk_key *disk_key, int nr); | |
1796 | ||
5f39d397 CM |
1797 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
1798 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 1799 | { |
5f39d397 CM |
1800 | unsigned long ptr; |
1801 | ptr = btrfs_node_key_ptr_offset(nr); | |
1802 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
1803 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
1804 | } |
1805 | ||
5f39d397 CM |
1806 | /* struct btrfs_item */ |
1807 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
1808 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
1809 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
1810 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 1811 | |
5f39d397 | 1812 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 1813 | { |
5f39d397 CM |
1814 | return offsetof(struct btrfs_leaf, items) + |
1815 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
1816 | } |
1817 | ||
dd3cc16b | 1818 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 1819 | { |
5f39d397 | 1820 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
1821 | } |
1822 | ||
5f39d397 CM |
1823 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
1824 | struct btrfs_item *item) | |
0783fcfc | 1825 | { |
5f39d397 | 1826 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
1827 | } |
1828 | ||
5f39d397 | 1829 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1830 | { |
dd3cc16b | 1831 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1832 | } |
1833 | ||
5f39d397 | 1834 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1835 | { |
dd3cc16b | 1836 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1837 | } |
1838 | ||
5f39d397 | 1839 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 1840 | { |
dd3cc16b | 1841 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
1842 | } |
1843 | ||
5f39d397 CM |
1844 | static inline void btrfs_item_key(struct extent_buffer *eb, |
1845 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1846 | { |
dd3cc16b | 1847 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1848 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1849 | } |
1850 | ||
5f39d397 CM |
1851 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
1852 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 1853 | { |
dd3cc16b | 1854 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 1855 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
1856 | } |
1857 | ||
e02119d5 CM |
1858 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
1859 | ||
0660b5af CM |
1860 | /* |
1861 | * struct btrfs_root_ref | |
1862 | */ | |
1863 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
1864 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
1865 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
1866 | ||
5f39d397 | 1867 | /* struct btrfs_dir_item */ |
5103e947 | 1868 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
1869 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
1870 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 1871 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
1872 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
1873 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
1874 | data_len, 16); | |
1875 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
1876 | name_len, 16); | |
1877 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
1878 | transid, 64); | |
1d4f6404 | 1879 | |
5f39d397 CM |
1880 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
1881 | struct btrfs_dir_item *item, | |
1882 | struct btrfs_disk_key *key) | |
1d4f6404 | 1883 | { |
5f39d397 | 1884 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
1885 | } |
1886 | ||
5f39d397 CM |
1887 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
1888 | struct btrfs_dir_item *item, | |
1889 | struct btrfs_disk_key *key) | |
a8a2ee0c | 1890 | { |
5f39d397 | 1891 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
1892 | } |
1893 | ||
0af3d00b JB |
1894 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
1895 | num_entries, 64); | |
1896 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
1897 | num_bitmaps, 64); | |
1898 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
1899 | generation, 64); | |
1900 | ||
1901 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
1902 | struct btrfs_free_space_header *h, | |
1903 | struct btrfs_disk_key *key) | |
1904 | { | |
1905 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1906 | } | |
1907 | ||
1908 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
1909 | struct btrfs_free_space_header *h, | |
1910 | struct btrfs_disk_key *key) | |
1911 | { | |
1912 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
1913 | } | |
1914 | ||
5f39d397 CM |
1915 | /* struct btrfs_disk_key */ |
1916 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
1917 | objectid, 64); | |
1918 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
1919 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 1920 | |
e2fa7227 CM |
1921 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
1922 | struct btrfs_disk_key *disk) | |
1923 | { | |
1924 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 1925 | cpu->type = disk->type; |
e2fa7227 CM |
1926 | cpu->objectid = le64_to_cpu(disk->objectid); |
1927 | } | |
1928 | ||
1929 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
1930 | struct btrfs_key *cpu) | |
1931 | { | |
1932 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 1933 | disk->type = cpu->type; |
e2fa7227 CM |
1934 | disk->objectid = cpu_to_le64(cpu->objectid); |
1935 | } | |
1936 | ||
5f39d397 CM |
1937 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
1938 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1939 | { |
5f39d397 CM |
1940 | struct btrfs_disk_key disk_key; |
1941 | btrfs_node_key(eb, &disk_key, nr); | |
1942 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1943 | } |
1944 | ||
5f39d397 CM |
1945 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
1946 | struct btrfs_key *key, int nr) | |
7f5c1516 | 1947 | { |
5f39d397 CM |
1948 | struct btrfs_disk_key disk_key; |
1949 | btrfs_item_key(eb, &disk_key, nr); | |
1950 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
1951 | } |
1952 | ||
5f39d397 CM |
1953 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
1954 | struct btrfs_dir_item *item, | |
1955 | struct btrfs_key *key) | |
4d775673 | 1956 | { |
5f39d397 CM |
1957 | struct btrfs_disk_key disk_key; |
1958 | btrfs_dir_item_key(eb, item, &disk_key); | |
1959 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
1960 | } |
1961 | ||
58176a96 | 1962 | |
5f39d397 | 1963 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 1964 | { |
5f39d397 | 1965 | return key->type; |
3768f368 CM |
1966 | } |
1967 | ||
5f39d397 | 1968 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 1969 | { |
5f39d397 | 1970 | key->type = val; |
3768f368 CM |
1971 | } |
1972 | ||
5f39d397 | 1973 | /* struct btrfs_header */ |
db94535d | 1974 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
1975 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
1976 | generation, 64); | |
1977 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
1978 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 1979 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 1980 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
1981 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
1982 | generation, 64); | |
1983 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
1984 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
1985 | nritems, 32); | |
1986 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 1987 | |
63b10fc4 CM |
1988 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
1989 | { | |
1990 | return (btrfs_header_flags(eb) & flag) == flag; | |
1991 | } | |
1992 | ||
1993 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
1994 | { | |
1995 | u64 flags = btrfs_header_flags(eb); | |
1996 | btrfs_set_header_flags(eb, flags | flag); | |
1997 | return (flags & flag) == flag; | |
1998 | } | |
1999 | ||
2000 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2001 | { | |
2002 | u64 flags = btrfs_header_flags(eb); | |
2003 | btrfs_set_header_flags(eb, flags & ~flag); | |
2004 | return (flags & flag) == flag; | |
2005 | } | |
2006 | ||
5d4f98a2 YZ |
2007 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2008 | { | |
2009 | u64 flags = btrfs_header_flags(eb); | |
2010 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2011 | } | |
2012 | ||
2013 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2014 | int rev) | |
2015 | { | |
2016 | u64 flags = btrfs_header_flags(eb); | |
2017 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2018 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2019 | btrfs_set_header_flags(eb, flags); | |
2020 | } | |
2021 | ||
0a4e5586 | 2022 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2023 | { |
fba6aa75 | 2024 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2025 | } |
2026 | ||
b308bc2f | 2027 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
e17cade2 | 2028 | { |
b308bc2f | 2029 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2030 | } |
2031 | ||
5f39d397 | 2032 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2033 | { |
d397712b | 2034 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2035 | } |
2036 | ||
5f39d397 | 2037 | /* struct btrfs_root_item */ |
84234f3a YZ |
2038 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2039 | generation, 64); | |
5f39d397 | 2040 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2041 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2042 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2043 | |
84234f3a YZ |
2044 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2045 | generation, 64); | |
db94535d CM |
2046 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2047 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2048 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2049 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2050 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2051 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2052 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2053 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2054 | last_snapshot, 64); | |
8ea05e3a AB |
2055 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2056 | generation_v2, 64); | |
2057 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2058 | ctransid, 64); | |
2059 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2060 | otransid, 64); | |
2061 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2062 | stransid, 64); | |
2063 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2064 | rtransid, 64); | |
123abc88 | 2065 | |
b83cc969 LZ |
2066 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2067 | { | |
6ed3cf2c | 2068 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2069 | } |
2070 | ||
521e0546 DS |
2071 | static inline bool btrfs_root_dead(struct btrfs_root *root) |
2072 | { | |
2073 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0; | |
2074 | } | |
2075 | ||
af31f5e5 CM |
2076 | /* struct btrfs_root_backup */ |
2077 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2078 | tree_root, 64); | |
2079 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2080 | tree_root_gen, 64); | |
2081 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2082 | tree_root_level, 8); | |
2083 | ||
2084 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2085 | chunk_root, 64); | |
2086 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2087 | chunk_root_gen, 64); | |
2088 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2089 | chunk_root_level, 8); | |
2090 | ||
2091 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2092 | extent_root, 64); | |
2093 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2094 | extent_root_gen, 64); | |
2095 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2096 | extent_root_level, 8); | |
2097 | ||
2098 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2099 | fs_root, 64); | |
2100 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2101 | fs_root_gen, 64); | |
2102 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2103 | fs_root_level, 8); | |
2104 | ||
2105 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2106 | dev_root, 64); | |
2107 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2108 | dev_root_gen, 64); | |
2109 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2110 | dev_root_level, 8); | |
2111 | ||
2112 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2113 | csum_root, 64); | |
2114 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2115 | csum_root_gen, 64); | |
2116 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2117 | csum_root_level, 8); | |
2118 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2119 | total_bytes, 64); | |
2120 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2121 | bytes_used, 64); | |
2122 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2123 | num_devices, 64); | |
2124 | ||
0940ebf6 ID |
2125 | /* struct btrfs_balance_item */ |
2126 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2127 | |
0940ebf6 ID |
2128 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2129 | struct btrfs_balance_item *bi, | |
2130 | struct btrfs_disk_balance_args *ba) | |
2131 | { | |
2132 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2133 | } | |
2134 | ||
2135 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2136 | struct btrfs_balance_item *bi, | |
2137 | struct btrfs_disk_balance_args *ba) | |
2138 | { | |
2139 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2140 | } | |
2141 | ||
2142 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2143 | struct btrfs_balance_item *bi, | |
2144 | struct btrfs_disk_balance_args *ba) | |
2145 | { | |
2146 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2147 | } | |
2148 | ||
2149 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2150 | struct btrfs_balance_item *bi, | |
2151 | struct btrfs_disk_balance_args *ba) | |
2152 | { | |
2153 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2154 | } | |
2155 | ||
2156 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2157 | struct btrfs_balance_item *bi, | |
2158 | struct btrfs_disk_balance_args *ba) | |
2159 | { | |
2160 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2161 | } | |
2162 | ||
2163 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2164 | struct btrfs_balance_item *bi, | |
2165 | struct btrfs_disk_balance_args *ba) | |
2166 | { | |
2167 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2168 | } | |
2169 | ||
2170 | static inline void | |
2171 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2172 | struct btrfs_disk_balance_args *disk) | |
2173 | { | |
2174 | memset(cpu, 0, sizeof(*cpu)); | |
2175 | ||
2176 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2177 | cpu->usage = le64_to_cpu(disk->usage); | |
2178 | cpu->devid = le64_to_cpu(disk->devid); | |
2179 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2180 | cpu->pend = le64_to_cpu(disk->pend); | |
2181 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2182 | cpu->vend = le64_to_cpu(disk->vend); | |
2183 | cpu->target = le64_to_cpu(disk->target); | |
2184 | cpu->flags = le64_to_cpu(disk->flags); | |
7d824b6f | 2185 | cpu->limit = le64_to_cpu(disk->limit); |
0940ebf6 ID |
2186 | } |
2187 | ||
2188 | static inline void | |
2189 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2190 | struct btrfs_balance_args *cpu) | |
2191 | { | |
2192 | memset(disk, 0, sizeof(*disk)); | |
2193 | ||
2194 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2195 | disk->usage = cpu_to_le64(cpu->usage); | |
2196 | disk->devid = cpu_to_le64(cpu->devid); | |
2197 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2198 | disk->pend = cpu_to_le64(cpu->pend); | |
2199 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2200 | disk->vend = cpu_to_le64(cpu->vend); | |
2201 | disk->target = cpu_to_le64(cpu->target); | |
2202 | disk->flags = cpu_to_le64(cpu->flags); | |
7d824b6f | 2203 | disk->limit = cpu_to_le64(cpu->limit); |
0940ebf6 ID |
2204 | } |
2205 | ||
2206 | /* struct btrfs_super_block */ | |
db94535d | 2207 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2208 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2209 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2210 | generation, 64); | |
2211 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2212 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2213 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2214 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2215 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2216 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2217 | root_level, 8); | |
0b86a832 CM |
2218 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2219 | chunk_root, 64); | |
2220 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2221 | chunk_root_level, 8); |
2222 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2223 | log_root, 64); | |
c3027eb5 CM |
2224 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2225 | log_root_transid, 64); | |
e02119d5 CM |
2226 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2227 | log_root_level, 8); | |
db94535d CM |
2228 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2229 | total_bytes, 64); | |
2230 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2231 | bytes_used, 64); | |
5f39d397 CM |
2232 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2233 | sectorsize, 32); | |
2234 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2235 | nodesize, 32); | |
87ee04eb CM |
2236 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2237 | stripesize, 32); | |
5f39d397 CM |
2238 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2239 | root_dir_objectid, 64); | |
8a4b83cc CM |
2240 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2241 | num_devices, 64); | |
f2b636e8 JB |
2242 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2243 | compat_flags, 64); | |
2244 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2245 | compat_ro_flags, 64); |
f2b636e8 JB |
2246 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2247 | incompat_flags, 64); | |
607d432d JB |
2248 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2249 | csum_type, 16); | |
0af3d00b JB |
2250 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2251 | cache_generation, 64); | |
3cae210f | 2252 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2253 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2254 | uuid_tree_generation, 64); | |
607d432d JB |
2255 | |
2256 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2257 | { | |
1104a885 DS |
2258 | u16 t = btrfs_super_csum_type(s); |
2259 | /* | |
2260 | * csum type is validated at mount time | |
2261 | */ | |
607d432d JB |
2262 | return btrfs_csum_sizes[t]; |
2263 | } | |
2e635a27 | 2264 | |
5f39d397 | 2265 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2266 | { |
5f39d397 | 2267 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2268 | } |
2269 | ||
5f39d397 CM |
2270 | /* struct btrfs_file_extent_item */ |
2271 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2272 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2273 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2274 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2275 | struct btrfs_file_extent_item, offset, 64); | |
2276 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2277 | struct btrfs_file_extent_item, generation, 64); | |
2278 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2279 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2280 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2281 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2282 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2283 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2284 | |
d397712b CM |
2285 | static inline unsigned long |
2286 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 2287 | { |
7ec20afb | 2288 | return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START; |
236454df CM |
2289 | } |
2290 | ||
2291 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
2292 | { | |
7ec20afb | 2293 | return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize; |
9f5fae2f CM |
2294 | } |
2295 | ||
db94535d CM |
2296 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
2297 | disk_bytenr, 64); | |
5f39d397 CM |
2298 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
2299 | generation, 64); | |
db94535d CM |
2300 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
2301 | disk_num_bytes, 64); | |
5f39d397 CM |
2302 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
2303 | offset, 64); | |
db94535d CM |
2304 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
2305 | num_bytes, 64); | |
c8b97818 CM |
2306 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
2307 | ram_bytes, 64); | |
2308 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
2309 | compression, 8); | |
2310 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
2311 | encryption, 8); | |
2312 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
2313 | other_encoding, 16); | |
2314 | ||
c8b97818 CM |
2315 | /* |
2316 | * this returns the number of bytes used by the item on disk, minus the | |
2317 | * size of any extent headers. If a file is compressed on disk, this is | |
2318 | * the compressed size | |
2319 | */ | |
2320 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
2321 | struct btrfs_item *e) | |
2322 | { | |
7ec20afb | 2323 | return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START; |
c8b97818 | 2324 | } |
9f5fae2f | 2325 | |
514ac8ad CM |
2326 | /* this returns the number of file bytes represented by the inline item. |
2327 | * If an item is compressed, this is the uncompressed size | |
2328 | */ | |
2329 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
2330 | int slot, | |
2331 | struct btrfs_file_extent_item *fi) | |
2332 | { | |
2333 | struct btrfs_map_token token; | |
2334 | ||
2335 | btrfs_init_map_token(&token); | |
2336 | /* | |
2337 | * return the space used on disk if this item isn't | |
2338 | * compressed or encoded | |
2339 | */ | |
2340 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && | |
2341 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && | |
2342 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { | |
2343 | return btrfs_file_extent_inline_item_len(eb, | |
2344 | btrfs_item_nr(slot)); | |
2345 | } | |
2346 | ||
2347 | /* otherwise use the ram bytes field */ | |
2348 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); | |
2349 | } | |
2350 | ||
2351 | ||
733f4fbb SB |
2352 | /* btrfs_dev_stats_item */ |
2353 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
2354 | struct btrfs_dev_stats_item *ptr, | |
2355 | int index) | |
2356 | { | |
2357 | u64 val; | |
2358 | ||
2359 | read_extent_buffer(eb, &val, | |
2360 | offsetof(struct btrfs_dev_stats_item, values) + | |
2361 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2362 | sizeof(val)); | |
2363 | return val; | |
2364 | } | |
2365 | ||
2366 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
2367 | struct btrfs_dev_stats_item *ptr, | |
2368 | int index, u64 val) | |
2369 | { | |
2370 | write_extent_buffer(eb, &val, | |
2371 | offsetof(struct btrfs_dev_stats_item, values) + | |
2372 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
2373 | sizeof(val)); | |
2374 | } | |
2375 | ||
630dc772 AJ |
2376 | /* btrfs_qgroup_status_item */ |
2377 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
2378 | generation, 64); | |
2379 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
2380 | version, 64); | |
2381 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
2382 | flags, 64); | |
2f232036 JS |
2383 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
2384 | rescan, 64); | |
630dc772 AJ |
2385 | |
2386 | /* btrfs_qgroup_info_item */ | |
2387 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
2388 | generation, 64); | |
2389 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
2390 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
2391 | rfer_cmpr, 64); | |
2392 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
2393 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
2394 | excl_cmpr, 64); | |
2395 | ||
2396 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
2397 | struct btrfs_qgroup_info_item, generation, 64); | |
2398 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
2399 | rfer, 64); | |
2400 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
2401 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
2402 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
2403 | excl, 64); | |
2404 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
2405 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
2406 | ||
2407 | /* btrfs_qgroup_limit_item */ | |
2408 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
2409 | flags, 64); | |
2410 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
2411 | max_rfer, 64); | |
2412 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
2413 | max_excl, 64); | |
2414 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
2415 | rsv_rfer, 64); | |
2416 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
2417 | rsv_excl, 64); | |
2418 | ||
a2bff640 SB |
2419 | /* btrfs_dev_replace_item */ |
2420 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
2421 | struct btrfs_dev_replace_item, src_devid, 64); | |
2422 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
2423 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
2424 | 64); | |
2425 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
2426 | replace_state, 64); | |
2427 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
2428 | time_started, 64); | |
2429 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
2430 | time_stopped, 64); | |
2431 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
2432 | num_write_errors, 64); | |
2433 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
2434 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
2435 | 64); | |
2436 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
2437 | cursor_left, 64); | |
2438 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
2439 | cursor_right, 64); | |
2440 | ||
2441 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
2442 | struct btrfs_dev_replace_item, src_devid, 64); | |
2443 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
2444 | struct btrfs_dev_replace_item, | |
2445 | cont_reading_from_srcdev_mode, 64); | |
2446 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
2447 | struct btrfs_dev_replace_item, replace_state, 64); | |
2448 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
2449 | struct btrfs_dev_replace_item, time_started, 64); | |
2450 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
2451 | struct btrfs_dev_replace_item, time_stopped, 64); | |
2452 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
2453 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
2454 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
2455 | struct btrfs_dev_replace_item, | |
2456 | num_uncorrectable_read_errors, 64); | |
2457 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
2458 | struct btrfs_dev_replace_item, cursor_left, 64); | |
2459 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
2460 | struct btrfs_dev_replace_item, cursor_right, 64); | |
2461 | ||
815745cf | 2462 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
e20d96d6 CM |
2463 | { |
2464 | return sb->s_fs_info; | |
2465 | } | |
2466 | ||
4beb1b8b CM |
2467 | /* helper function to cast into the data area of the leaf. */ |
2468 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 2469 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
2470 | btrfs_item_offset_nr(leaf, slot))) |
2471 | ||
2472 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
2473 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
2474 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 2475 | |
67377734 JB |
2476 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
2477 | { | |
2478 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
2479 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
2480 | } | |
2481 | ||
3b16a4e3 JB |
2482 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
2483 | { | |
c62d2555 | 2484 | return mapping_gfp_constraint(mapping, ~__GFP_FS); |
3b16a4e3 JB |
2485 | } |
2486 | ||
b18c6685 | 2487 | /* extent-tree.c */ |
28f75a0e CM |
2488 | |
2489 | u64 btrfs_csum_bytes_to_leaves(struct btrfs_root *root, u64 csum_bytes); | |
2490 | ||
16cdcec7 | 2491 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 2492 | unsigned num_items) |
16cdcec7 | 2493 | { |
0138b6fe | 2494 | return root->nodesize * BTRFS_MAX_LEVEL * 2 * num_items; |
07127184 JB |
2495 | } |
2496 | ||
2497 | /* | |
2498 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
2499 | * COW. | |
2500 | */ | |
2501 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, | |
2502 | unsigned num_items) | |
2503 | { | |
707e8a07 | 2504 | return root->nodesize * BTRFS_MAX_LEVEL * num_items; |
16cdcec7 MX |
2505 | } |
2506 | ||
1be41b78 JB |
2507 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
2508 | struct btrfs_root *root); | |
0a2b2a84 JB |
2509 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
2510 | struct btrfs_root *root); | |
9cfa3e34 FM |
2511 | void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, |
2512 | const u64 start); | |
2513 | void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); | |
f78c436c FM |
2514 | bool btrfs_inc_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); |
2515 | void btrfs_dec_nocow_writers(struct btrfs_fs_info *fs_info, u64 bytenr); | |
2516 | void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg); | |
fa9c0d79 | 2517 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
2518 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
2519 | struct btrfs_root *root, unsigned long count); | |
a79b7d4b CM |
2520 | int btrfs_async_run_delayed_refs(struct btrfs_root *root, |
2521 | unsigned long count, int wait); | |
1a4ed8fd | 2522 | int btrfs_lookup_data_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
2523 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
2524 | struct btrfs_root *root, u64 bytenr, | |
3173a18f | 2525 | u64 offset, int metadata, u64 *refs, u64 *flags); |
11833d66 YZ |
2526 | int btrfs_pin_extent(struct btrfs_root *root, |
2527 | u64 bytenr, u64 num, int reserved); | |
dcfac415 | 2528 | int btrfs_pin_extent_for_log_replay(struct btrfs_root *root, |
e688b725 | 2529 | u64 bytenr, u64 num_bytes); |
8c2a1a30 JB |
2530 | int btrfs_exclude_logged_extents(struct btrfs_root *root, |
2531 | struct extent_buffer *eb); | |
80ff3856 | 2532 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
2533 | struct btrfs_root *root, |
2534 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
2535 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
2536 | struct btrfs_fs_info *info, | |
2537 | u64 bytenr); | |
758f2dfc | 2538 | void btrfs_get_block_group(struct btrfs_block_group_cache *cache); |
5d4f98a2 | 2539 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
6ab0a202 | 2540 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
4d75f8a9 DS |
2541 | struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, |
2542 | struct btrfs_root *root, u64 parent, | |
2543 | u64 root_objectid, | |
5d4f98a2 | 2544 | struct btrfs_disk_key *key, int level, |
5581a51a | 2545 | u64 hint, u64 empty_size); |
f0486c68 YZ |
2546 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
2547 | struct btrfs_root *root, | |
2548 | struct extent_buffer *buf, | |
5581a51a | 2549 | u64 parent, int last_ref); |
5d4f98a2 YZ |
2550 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
2551 | struct btrfs_root *root, | |
2552 | u64 root_objectid, u64 owner, | |
5846a3c2 QW |
2553 | u64 offset, u64 ram_bytes, |
2554 | struct btrfs_key *ins); | |
5d4f98a2 YZ |
2555 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, |
2556 | struct btrfs_root *root, | |
2557 | u64 root_objectid, u64 owner, u64 offset, | |
2558 | struct btrfs_key *ins); | |
00361589 JB |
2559 | int btrfs_reserve_extent(struct btrfs_root *root, u64 num_bytes, |
2560 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, | |
e570fd27 | 2561 | struct btrfs_key *ins, int is_data, int delalloc); |
e089f05c | 2562 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2563 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 | 2564 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e339a6b0 | 2565 | struct extent_buffer *buf, int full_backref); |
5d4f98a2 YZ |
2566 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
2567 | struct btrfs_root *root, | |
2568 | u64 bytenr, u64 num_bytes, u64 flags, | |
b1c79e09 | 2569 | int level, int is_data); |
31840ae1 ZY |
2570 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
2571 | struct btrfs_root *root, | |
66d7e7f0 | 2572 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
b06c4bf5 | 2573 | u64 owner, u64 offset); |
5d4f98a2 | 2574 | |
e570fd27 MX |
2575 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len, |
2576 | int delalloc); | |
e688b725 CM |
2577 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
2578 | u64 start, u64 len); | |
143bede5 JM |
2579 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
2580 | struct btrfs_root *root); | |
ccd467d6 | 2581 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 2582 | struct btrfs_root *root); |
b18c6685 | 2583 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
2584 | struct btrfs_root *root, |
2585 | u64 bytenr, u64 num_bytes, u64 parent, | |
b06c4bf5 | 2586 | u64 root_objectid, u64 owner, u64 offset); |
5d4f98a2 | 2587 | |
1bbc621e CM |
2588 | int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans, |
2589 | struct btrfs_root *root); | |
9078a3e1 CM |
2590 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
2591 | struct btrfs_root *root); | |
dcdf7f6d JB |
2592 | int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, |
2593 | struct btrfs_root *root); | |
d2fb3437 | 2594 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
2595 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
2596 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 2597 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
2598 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
2599 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 2600 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 2601 | u64 size); |
8eab77ff | 2602 | struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( |
7fd01182 FM |
2603 | struct btrfs_fs_info *fs_info, |
2604 | const u64 chunk_offset); | |
1a40e23b | 2605 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
04216820 FM |
2606 | struct btrfs_root *root, u64 group_start, |
2607 | struct extent_map *em); | |
47ab2a6c | 2608 | void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info); |
e33e17ee JM |
2609 | void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); |
2610 | void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); | |
ea658bad JB |
2611 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
2612 | struct btrfs_root *root); | |
6d07bcec | 2613 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
4184ea7f | 2614 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
2615 | |
2616 | enum btrfs_reserve_flush_enum { | |
2617 | /* If we are in the transaction, we can't flush anything.*/ | |
2618 | BTRFS_RESERVE_NO_FLUSH, | |
2619 | /* | |
2620 | * Flushing delalloc may cause deadlock somewhere, in this | |
2621 | * case, use FLUSH LIMIT | |
2622 | */ | |
2623 | BTRFS_RESERVE_FLUSH_LIMIT, | |
2624 | BTRFS_RESERVE_FLUSH_ALL, | |
2625 | }; | |
2626 | ||
7cf5b976 | 2627 | int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len); |
4ceff079 | 2628 | int btrfs_alloc_data_chunk_ondemand(struct inode *inode, u64 bytes); |
7cf5b976 | 2629 | void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len); |
51773bec QW |
2630 | void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, |
2631 | u64 len); | |
a22285a6 YZ |
2632 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
2633 | struct btrfs_root *root); | |
4fbcdf66 | 2634 | void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans); |
d68fc57b YZ |
2635 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
2636 | struct inode *inode); | |
2637 | void btrfs_orphan_release_metadata(struct inode *inode); | |
d5c12070 MX |
2638 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
2639 | struct btrfs_block_rsv *rsv, | |
2640 | int nitems, | |
ee3441b4 | 2641 | u64 *qgroup_reserved, bool use_global_rsv); |
d5c12070 MX |
2642 | void btrfs_subvolume_release_metadata(struct btrfs_root *root, |
2643 | struct btrfs_block_rsv *rsv, | |
2644 | u64 qgroup_reserved); | |
0ca1f7ce YZ |
2645 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
2646 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
7cf5b976 QW |
2647 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 start, u64 len); |
2648 | void btrfs_delalloc_release_space(struct inode *inode, u64 start, u64 len); | |
66d8f3dd MX |
2649 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
2650 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, | |
2651 | unsigned short type); | |
f0486c68 YZ |
2652 | void btrfs_free_block_rsv(struct btrfs_root *root, |
2653 | struct btrfs_block_rsv *rsv); | |
cdfb080e | 2654 | void __btrfs_free_block_rsv(struct btrfs_block_rsv *rsv); |
4a92b1b8 | 2655 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
2656 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
2657 | enum btrfs_reserve_flush_enum flush); | |
4a92b1b8 | 2658 | int btrfs_block_rsv_check(struct btrfs_root *root, |
36ba022a JB |
2659 | struct btrfs_block_rsv *block_rsv, int min_factor); |
2660 | int btrfs_block_rsv_refill(struct btrfs_root *root, | |
08e007d2 MX |
2661 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
2662 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 YZ |
2663 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
2664 | struct btrfs_block_rsv *dst_rsv, | |
2665 | u64 num_bytes); | |
d52be818 JB |
2666 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
2667 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
2668 | int min_factor); | |
f0486c68 YZ |
2669 | void btrfs_block_rsv_release(struct btrfs_root *root, |
2670 | struct btrfs_block_rsv *block_rsv, | |
2671 | u64 num_bytes); | |
868f401a | 2672 | int btrfs_inc_block_group_ro(struct btrfs_root *root, |
f0486c68 | 2673 | struct btrfs_block_group_cache *cache); |
868f401a | 2674 | void btrfs_dec_block_group_ro(struct btrfs_root *root, |
143bede5 | 2675 | struct btrfs_block_group_cache *cache); |
0af3d00b | 2676 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 2677 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 2678 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
2679 | u64 start, u64 end); | |
1edb647b FM |
2680 | int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr, |
2681 | u64 num_bytes, u64 *actual_bytes); | |
c87f08ca CM |
2682 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
2683 | struct btrfs_root *root, u64 type); | |
f7039b1d | 2684 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 2685 | |
c59021f8 | 2686 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
2687 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
2688 | struct btrfs_fs_info *fs_info); | |
31e50229 | 2689 | int __get_raid_index(u64 flags); |
9ea24bbe FM |
2690 | int btrfs_start_write_no_snapshoting(struct btrfs_root *root); |
2691 | void btrfs_end_write_no_snapshoting(struct btrfs_root *root); | |
0bc19f90 | 2692 | void btrfs_wait_for_snapshot_creation(struct btrfs_root *root); |
39c2d7fa FM |
2693 | void check_system_chunk(struct btrfs_trans_handle *trans, |
2694 | struct btrfs_root *root, | |
4617ea3a | 2695 | const u64 type); |
a5ed9182 OS |
2696 | u64 add_new_free_space(struct btrfs_block_group_cache *block_group, |
2697 | struct btrfs_fs_info *info, u64 start, u64 end); | |
2698 | ||
dee26a9f | 2699 | /* ctree.c */ |
5d4f98a2 YZ |
2700 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
2701 | int level, int *slot); | |
2702 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
2703 | int btrfs_previous_item(struct btrfs_root *root, |
2704 | struct btrfs_path *path, u64 min_objectid, | |
2705 | int type); | |
ade2e0b3 WS |
2706 | int btrfs_previous_extent_item(struct btrfs_root *root, |
2707 | struct btrfs_path *path, u64 min_objectid); | |
b7a0365e DD |
2708 | void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info, |
2709 | struct btrfs_path *path, | |
143bede5 | 2710 | struct btrfs_key *new_key); |
925baedd CM |
2711 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
2712 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 2713 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 2714 | struct btrfs_key *key, int lowest_level, |
de78b51a | 2715 | u64 min_trans); |
3f157a2f | 2716 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 2717 | struct btrfs_path *path, |
3f157a2f | 2718 | u64 min_trans); |
7069830a AB |
2719 | enum btrfs_compare_tree_result { |
2720 | BTRFS_COMPARE_TREE_NEW, | |
2721 | BTRFS_COMPARE_TREE_DELETED, | |
2722 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 2723 | BTRFS_COMPARE_TREE_SAME, |
7069830a AB |
2724 | }; |
2725 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, | |
2726 | struct btrfs_root *right_root, | |
2727 | struct btrfs_path *left_path, | |
2728 | struct btrfs_path *right_path, | |
2729 | struct btrfs_key *key, | |
2730 | enum btrfs_compare_tree_result result, | |
2731 | void *ctx); | |
2732 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
2733 | struct btrfs_root *right_root, | |
2734 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
2735 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
2736 | struct btrfs_root *root, struct extent_buffer *buf, | |
2737 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 2738 | struct extent_buffer **cow_ret); |
be20aa9d CM |
2739 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
2740 | struct btrfs_root *root, | |
2741 | struct extent_buffer *buf, | |
2742 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
2743 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
2744 | struct extent_buffer *buf); | |
4b90c680 | 2745 | void btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 2746 | u32 data_size); |
afe5fea7 | 2747 | void btrfs_truncate_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 2748 | u32 new_size, int from_end); |
459931ec CM |
2749 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
2750 | struct btrfs_root *root, | |
2751 | struct btrfs_path *path, | |
2752 | struct btrfs_key *new_key, | |
2753 | unsigned long split_offset); | |
ad48fd75 YZ |
2754 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
2755 | struct btrfs_root *root, | |
2756 | struct btrfs_path *path, | |
2757 | struct btrfs_key *new_key); | |
e33d5c3d KN |
2758 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
2759 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
e089f05c CM |
2760 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
2761 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
2762 | ins_len, int cow); | |
5d9e75c4 JS |
2763 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
2764 | struct btrfs_path *p, u64 time_seq); | |
2f38b3e1 AJ |
2765 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
2766 | struct btrfs_key *key, struct btrfs_path *p, | |
2767 | int find_higher, int return_any); | |
6702ed49 | 2768 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 2769 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 2770 | int start_slot, u64 *last_ret, |
a6b6e75e | 2771 | struct btrfs_key *progress); |
b3b4aa74 | 2772 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
2773 | struct btrfs_path *btrfs_alloc_path(void); |
2774 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 2775 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 2776 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 2777 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
2778 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
2779 | ||
85e21bac CM |
2780 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2781 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
2782 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
2783 | struct btrfs_root *root, | |
2784 | struct btrfs_path *path) | |
2785 | { | |
2786 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
2787 | } | |
2788 | ||
afe5fea7 | 2789 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 JM |
2790 | struct btrfs_key *cpu_key, u32 *data_size, |
2791 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
2792 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
2793 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
2794 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
2795 | struct btrfs_root *root, | |
2796 | struct btrfs_path *path, | |
2797 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
2798 | ||
2799 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
2800 | struct btrfs_root *root, | |
2801 | struct btrfs_path *path, | |
2802 | struct btrfs_key *key, | |
2803 | u32 data_size) | |
2804 | { | |
2805 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
2806 | } | |
2807 | ||
234b63a0 | 2808 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 2809 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
2810 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
2811 | u64 time_seq); | |
1c8f52a5 AB |
2812 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
2813 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
2814 | { |
2815 | ++p->slots[0]; | |
2816 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 2817 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
2818 | return 0; |
2819 | } | |
1c8f52a5 AB |
2820 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
2821 | { | |
2822 | return btrfs_next_old_item(root, p, 0); | |
2823 | } | |
5f39d397 | 2824 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
2c536799 JM |
2825 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
2826 | struct btrfs_block_rsv *block_rsv, | |
2827 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
2828 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
2829 | struct btrfs_root *root, | |
2830 | struct extent_buffer *node, | |
2831 | struct extent_buffer *parent); | |
7841cb28 DS |
2832 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
2833 | { | |
2834 | /* | |
2835 | * Get synced with close_ctree() | |
2836 | */ | |
2837 | smp_mb(); | |
2838 | return fs_info->closing; | |
2839 | } | |
babbf170 MX |
2840 | |
2841 | /* | |
2842 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
2843 | * anything except sleeping. This function is used to check the status of | |
2844 | * the fs. | |
2845 | */ | |
2846 | static inline int btrfs_need_cleaner_sleep(struct btrfs_root *root) | |
2847 | { | |
2848 | return (root->fs_info->sb->s_flags & MS_RDONLY || | |
2849 | btrfs_fs_closing(root->fs_info)); | |
2850 | } | |
2851 | ||
6c41761f DS |
2852 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
2853 | { | |
837d5b6e | 2854 | kfree(fs_info->balance_ctl); |
6c41761f DS |
2855 | kfree(fs_info->delayed_root); |
2856 | kfree(fs_info->extent_root); | |
2857 | kfree(fs_info->tree_root); | |
2858 | kfree(fs_info->chunk_root); | |
2859 | kfree(fs_info->dev_root); | |
2860 | kfree(fs_info->csum_root); | |
bcef60f2 | 2861 | kfree(fs_info->quota_root); |
d8f98039 | 2862 | kfree(fs_info->uuid_root); |
70f6d82e | 2863 | kfree(fs_info->free_space_root); |
6c41761f DS |
2864 | kfree(fs_info->super_copy); |
2865 | kfree(fs_info->super_for_commit); | |
f667aef6 | 2866 | security_free_mnt_opts(&fs_info->security_opts); |
6c41761f DS |
2867 | kfree(fs_info); |
2868 | } | |
7841cb28 | 2869 | |
097b8a7c JS |
2870 | /* tree mod log functions from ctree.c */ |
2871 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2872 | struct seq_list *elem); | |
2873 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
2874 | struct seq_list *elem); | |
5b6602e7 | 2875 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 2876 | |
dee26a9f | 2877 | /* root-item.c */ |
ea9e8b11 | 2878 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
2879 | struct btrfs_path *path, |
2880 | u64 root_id, u64 ref_id); | |
0660b5af CM |
2881 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
2882 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
2883 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
2884 | const char *name, int name_len); | |
2885 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
2886 | struct btrfs_root *tree_root, | |
2887 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 2888 | const char *name, int name_len); |
e089f05c CM |
2889 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
2890 | struct btrfs_key *key); | |
2891 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
2892 | *root, struct btrfs_key *key, struct btrfs_root_item | |
2893 | *item); | |
b45a9d8b JM |
2894 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
2895 | struct btrfs_root *root, | |
2896 | struct btrfs_key *key, | |
2897 | struct btrfs_root_item *item); | |
cb517eab MX |
2898 | int btrfs_find_root(struct btrfs_root *root, struct btrfs_key *search_key, |
2899 | struct btrfs_path *path, struct btrfs_root_item *root_item, | |
2900 | struct btrfs_key *root_key); | |
76dda93c | 2901 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
2902 | void btrfs_set_root_node(struct btrfs_root_item *item, |
2903 | struct extent_buffer *node); | |
08fe4db1 | 2904 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
2905 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
2906 | struct btrfs_root *root); | |
08fe4db1 | 2907 | |
07b30a49 SB |
2908 | /* uuid-tree.c */ |
2909 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, | |
2910 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
2911 | u64 subid); | |
2912 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, | |
2913 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
2914 | u64 subid); | |
70f80175 SB |
2915 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
2916 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
2917 | u64)); | |
07b30a49 | 2918 | |
dee26a9f | 2919 | /* dir-item.c */ |
9c52057c CM |
2920 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
2921 | const char *name, int name_len); | |
d397712b CM |
2922 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
2923 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 2924 | int name_len, struct inode *dir, |
aec7477b | 2925 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
2926 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
2927 | struct btrfs_root *root, | |
2928 | struct btrfs_path *path, u64 dir, | |
2929 | const char *name, int name_len, | |
2930 | int mod); | |
2931 | struct btrfs_dir_item * | |
2932 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
2933 | struct btrfs_root *root, | |
2934 | struct btrfs_path *path, u64 dir, | |
2935 | u64 objectid, const char *name, int name_len, | |
2936 | int mod); | |
4df27c4d YZ |
2937 | struct btrfs_dir_item * |
2938 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
2939 | struct btrfs_path *path, u64 dirid, | |
2940 | const char *name, int name_len); | |
7e38180e CM |
2941 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
2942 | struct btrfs_root *root, | |
2943 | struct btrfs_path *path, | |
2944 | struct btrfs_dir_item *di); | |
5103e947 | 2945 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
2946 | struct btrfs_root *root, |
2947 | struct btrfs_path *path, u64 objectid, | |
2948 | const char *name, u16 name_len, | |
2949 | const void *data, u16 data_len); | |
5103e947 JB |
2950 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
2951 | struct btrfs_root *root, | |
2952 | struct btrfs_path *path, u64 dir, | |
2953 | const char *name, u16 name_len, | |
2954 | int mod); | |
22a94d44 JB |
2955 | int verify_dir_item(struct btrfs_root *root, |
2956 | struct extent_buffer *leaf, | |
2957 | struct btrfs_dir_item *dir_item); | |
5f5bc6b1 FM |
2958 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, |
2959 | struct btrfs_path *path, | |
2960 | const char *name, | |
2961 | int name_len); | |
7b128766 JB |
2962 | |
2963 | /* orphan.c */ | |
2964 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
2965 | struct btrfs_root *root, u64 offset); | |
2966 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
2967 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 2968 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 2969 | |
dee26a9f | 2970 | /* inode-item.c */ |
3954401f CM |
2971 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
2972 | struct btrfs_root *root, | |
2973 | const char *name, int name_len, | |
aec7477b | 2974 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
2975 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
2976 | struct btrfs_root *root, | |
2977 | const char *name, int name_len, | |
aec7477b | 2978 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
2979 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
2980 | struct btrfs_root *root, | |
2981 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 2982 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
2983 | *root, struct btrfs_path *path, |
2984 | struct btrfs_key *location, int mod); | |
dee26a9f | 2985 | |
f186373f MF |
2986 | struct btrfs_inode_extref * |
2987 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
2988 | struct btrfs_root *root, | |
2989 | struct btrfs_path *path, | |
2990 | const char *name, int name_len, | |
2991 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
2992 | int cow); | |
2993 | ||
2994 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, | |
2995 | u64 ref_objectid, const char *name, | |
2996 | int name_len, | |
2997 | struct btrfs_inode_extref **extref_ret); | |
2998 | ||
dee26a9f | 2999 | /* file-item.c */ |
facc8a22 | 3000 | struct btrfs_dio_private; |
459931ec CM |
3001 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
3002 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 3003 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3004 | struct bio *bio, u32 *dst); |
4b46fce2 | 3005 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
23ea8e5a | 3006 | struct bio *bio, u64 logical_offset); |
b18c6685 | 3007 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3008 | struct btrfs_root *root, |
3009 | u64 objectid, u64 pos, | |
3010 | u64 disk_offset, u64 disk_num_bytes, | |
3011 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3012 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3013 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3014 | struct btrfs_root *root, | |
3015 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3016 | u64 bytenr, int mod); |
065631f6 | 3017 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3018 | struct btrfs_root *root, |
e6dcd2dc | 3019 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 3020 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3021 | struct bio *bio, u64 file_start, int contig); |
a2de733c AJ |
3022 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3023 | struct list_head *list, int search_commit); | |
7ffbb598 FM |
3024 | void btrfs_extent_item_to_extent_map(struct inode *inode, |
3025 | const struct btrfs_path *path, | |
3026 | struct btrfs_file_extent_item *fi, | |
3027 | const bool new_inline, | |
3028 | struct extent_map *em); | |
3029 | ||
39279cc3 | 3030 | /* inode.c */ |
8ccf6f19 MX |
3031 | struct btrfs_delalloc_work { |
3032 | struct inode *inode; | |
8ccf6f19 MX |
3033 | int delay_iput; |
3034 | struct completion completion; | |
3035 | struct list_head list; | |
3036 | struct btrfs_work work; | |
3037 | }; | |
3038 | ||
3039 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, | |
651d494a | 3040 | int delay_iput); |
8ccf6f19 MX |
3041 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); |
3042 | ||
b2675157 JB |
3043 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
3044 | size_t pg_offset, u64 start, u64 len, | |
3045 | int create); | |
00361589 | 3046 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3047 | u64 *orig_start, u64 *orig_block_len, |
3048 | u64 *ram_bytes); | |
4881ee5a CM |
3049 | |
3050 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3051 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3052 | #define ClearPageChecked ClearPageFsMisc |
3053 | #define SetPageChecked SetPageFsMisc | |
3054 | #define PageChecked PageFsMisc | |
3055 | #endif | |
3056 | ||
b6973aa6 LZ |
3057 | /* This forces readahead on a given range of bytes in an inode */ |
3058 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3059 | struct file_ra_state *ra, struct file *file, | |
3060 | pgoff_t offset, unsigned long req_size) | |
3061 | { | |
3062 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3063 | } | |
3064 | ||
3de4586c CM |
3065 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
3066 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
3067 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3068 | struct btrfs_root *root, | |
3069 | struct inode *dir, struct inode *inode, | |
3070 | const char *name, int name_len); | |
3071 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
3072 | struct inode *parent_inode, struct inode *inode, | |
3073 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
3074 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3075 | struct btrfs_root *root, | |
3076 | struct inode *dir, u64 objectid, | |
3077 | const char *name, int name_len); | |
9703fefe | 3078 | int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, |
2aaa6655 | 3079 | int front); |
e02119d5 CM |
3080 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3081 | struct btrfs_root *root, | |
3082 | struct inode *inode, u64 new_size, | |
3083 | u32 min_type); | |
3084 | ||
24bbcf04 | 3085 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
6c255e67 MX |
3086 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
3087 | int nr); | |
2ac55d41 JB |
3088 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
3089 | struct extent_state **cached_state); | |
d2fb3437 | 3090 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3091 | struct btrfs_root *new_root, |
3092 | struct btrfs_root *parent_root, | |
3093 | u64 new_dirid); | |
64a16701 DW |
3094 | int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, |
3095 | size_t size, struct bio *bio, | |
3096 | unsigned long bio_flags); | |
c2ec175c | 3097 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 3098 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3099 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3100 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3101 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3102 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3103 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3104 | int btrfs_init_cachep(void); |
3105 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3106 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3107 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3108 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 3109 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 3110 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
3111 | int create); |
3112 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
3113 | struct btrfs_root *root, | |
3114 | struct inode *inode); | |
be6aef60 JB |
3115 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3116 | struct btrfs_root *root, struct inode *inode); | |
5b21f2ed | 3117 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
66b4ffd1 | 3118 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3119 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3120 | struct btrfs_root *root); | |
a41ad394 | 3121 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3122 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
3123 | void btrfs_add_delayed_iput(struct inode *inode); |
3124 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
3125 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3126 | u64 start, u64 num_bytes, u64 min_size, | |
3127 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3128 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3129 | struct btrfs_trans_handle *trans, int mode, | |
3130 | u64 start, u64 num_bytes, u64 min_size, | |
3131 | loff_t actual_len, u64 *alloc_hint); | |
b38ef71c | 3132 | int btrfs_inode_check_errors(struct inode *inode); |
82d339d9 | 3133 | extern const struct dentry_operations btrfs_dentry_operations; |
6a3891c5 JB |
3134 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
3135 | void btrfs_test_inode_set_ops(struct inode *inode); | |
3136 | #endif | |
f46b5a66 CH |
3137 | |
3138 | /* ioctl.c */ | |
3139 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
4c63c245 | 3140 | long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
d5131b65 | 3141 | int btrfs_ioctl_get_supported_features(void __user *arg); |
6cbff00f CH |
3142 | void btrfs_update_iflags(struct inode *inode); |
3143 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
dd5f9615 | 3144 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3145 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3146 | struct btrfs_ioctl_defrag_range_args *range, | |
3147 | u64 newer_than, unsigned long max_pages); | |
5af3e8cc SB |
3148 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3149 | struct btrfs_ioctl_space_info *space); | |
35a3621b SB |
3150 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
3151 | struct btrfs_ioctl_balance_args *bargs); | |
2b3909f8 DW |
3152 | ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen, |
3153 | struct file *dst_file, u64 dst_loff); | |
35a3621b | 3154 | |
39279cc3 | 3155 | /* file.c */ |
9247f317 MX |
3156 | int btrfs_auto_defrag_init(void); |
3157 | void btrfs_auto_defrag_exit(void); | |
4cb5300b CM |
3158 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
3159 | struct inode *inode); | |
3160 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
26176e7c | 3161 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3162 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
7014cdb4 JB |
3163 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
3164 | int skip_pinned); | |
828c0950 | 3165 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3166 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3167 | struct btrfs_root *root, struct inode *inode, | |
3168 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3169 | u64 *drop_end, int drop_cache, |
3170 | int replace_extent, | |
3171 | u32 extent_item_size, | |
3172 | int *key_inserted); | |
5dc562c5 JB |
3173 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3174 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3175 | u64 end, int drop_cache); |
d899e052 | 3176 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 3177 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 3178 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
3179 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, |
3180 | struct page **pages, size_t num_pages, | |
3181 | loff_t pos, size_t write_bytes, | |
3182 | struct extent_state **cached); | |
728404da | 3183 | int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); |
3db11b2e ZB |
3184 | ssize_t btrfs_copy_file_range(struct file *file_in, loff_t pos_in, |
3185 | struct file *file_out, loff_t pos_out, | |
3186 | size_t len, unsigned int flags); | |
04b38d60 CH |
3187 | int btrfs_clone_file_range(struct file *file_in, loff_t pos_in, |
3188 | struct file *file_out, loff_t pos_out, u64 len); | |
6bf13c0c | 3189 | |
6702ed49 CM |
3190 | /* tree-defrag.c */ |
3191 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3192 | struct btrfs_root *root); |
58176a96 JB |
3193 | |
3194 | /* sysfs.c */ | |
3195 | int btrfs_init_sysfs(void); | |
3196 | void btrfs_exit_sysfs(void); | |
96f3136e | 3197 | int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info); |
6618a59b | 3198 | void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info); |
58176a96 | 3199 | |
5103e947 JB |
3200 | /* xattr.c */ |
3201 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3202 | |
edbd8d4e | 3203 | /* super.c */ |
96da0919 QW |
3204 | int btrfs_parse_options(struct btrfs_root *root, char *options, |
3205 | unsigned long new_flags); | |
6bf13c0c | 3206 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 JP |
3207 | |
3208 | #ifdef CONFIG_PRINTK | |
3209 | __printf(2, 3) | |
c2cf52eb | 3210 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 JP |
3211 | #else |
3212 | static inline __printf(2, 3) | |
c2cf52eb | 3213 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
533574c6 JP |
3214 | { |
3215 | } | |
3216 | #endif | |
3217 | ||
c2cf52eb SK |
3218 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3219 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3220 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3221 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3222 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3223 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3224 | #define btrfs_err(fs_info, fmt, args...) \ | |
3225 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3226 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3227 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3228 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3229 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3230 | #define btrfs_info(fs_info, fmt, args...) \ | |
3231 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3232 | |
08a84e25 DS |
3233 | /* |
3234 | * Wrappers that use printk_in_rcu | |
3235 | */ | |
3236 | #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ | |
3237 | btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3238 | #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ | |
3239 | btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3240 | #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ | |
3241 | btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3242 | #define btrfs_err_in_rcu(fs_info, fmt, args...) \ | |
3243 | btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3244 | #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ | |
3245 | btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3246 | #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ | |
3247 | btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3248 | #define btrfs_info_in_rcu(fs_info, fmt, args...) \ | |
3249 | btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3250 | ||
24aa6b41 DS |
3251 | /* |
3252 | * Wrappers that use a ratelimited printk_in_rcu | |
3253 | */ | |
3254 | #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ | |
3255 | btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) | |
3256 | #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ | |
3257 | btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) | |
3258 | #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ | |
3259 | btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) | |
3260 | #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ | |
3261 | btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) | |
3262 | #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ | |
3263 | btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) | |
3264 | #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ | |
3265 | btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) | |
3266 | #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ | |
3267 | btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) | |
3268 | ||
1dd6d7ca DS |
3269 | /* |
3270 | * Wrappers that use a ratelimited printk | |
3271 | */ | |
3272 | #define btrfs_emerg_rl(fs_info, fmt, args...) \ | |
3273 | btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) | |
3274 | #define btrfs_alert_rl(fs_info, fmt, args...) \ | |
3275 | btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) | |
3276 | #define btrfs_crit_rl(fs_info, fmt, args...) \ | |
3277 | btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) | |
3278 | #define btrfs_err_rl(fs_info, fmt, args...) \ | |
3279 | btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) | |
3280 | #define btrfs_warn_rl(fs_info, fmt, args...) \ | |
3281 | btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) | |
3282 | #define btrfs_notice_rl(fs_info, fmt, args...) \ | |
3283 | btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) | |
3284 | #define btrfs_info_rl(fs_info, fmt, args...) \ | |
3285 | btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 | 3286 | #ifdef DEBUG |
c2cf52eb SK |
3287 | #define btrfs_debug(fs_info, fmt, args...) \ |
3288 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3289 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3290 | btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3291 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3292 | btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3293 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3294 | btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3295 | #else |
3296 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3297 | no_printk(KERN_DEBUG fmt, ##args) | |
08a84e25 DS |
3298 | #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ |
3299 | no_printk(KERN_DEBUG fmt, ##args) | |
24aa6b41 DS |
3300 | #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ |
3301 | no_printk(KERN_DEBUG fmt, ##args) | |
1dd6d7ca DS |
3302 | #define btrfs_debug_rl(fs_info, fmt, args...) \ |
3303 | no_printk(KERN_DEBUG fmt, ##args) | |
27a0dd61 | 3304 | #endif |
c2cf52eb | 3305 | |
08a84e25 DS |
3306 | #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ |
3307 | do { \ | |
3308 | rcu_read_lock(); \ | |
3309 | btrfs_printk(fs_info, fmt, ##args); \ | |
3310 | rcu_read_unlock(); \ | |
3311 | } while (0) | |
3312 | ||
24aa6b41 DS |
3313 | #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ |
3314 | do { \ | |
3315 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
3316 | DEFAULT_RATELIMIT_INTERVAL, \ | |
3317 | DEFAULT_RATELIMIT_BURST); \ | |
3318 | if (__ratelimit(&_rs)) \ | |
3319 | btrfs_printk(fs_info, fmt, ##args); \ | |
3320 | } while (0) | |
3321 | ||
3322 | #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ | |
3323 | do { \ | |
3324 | rcu_read_lock(); \ | |
3325 | btrfs_printk_ratelimited(fs_info, fmt, ##args); \ | |
3326 | rcu_read_unlock(); \ | |
3327 | } while (0) | |
3328 | ||
2e17c7c6 JB |
3329 | #ifdef CONFIG_BTRFS_ASSERT |
3330 | ||
c0d19e2b | 3331 | __cold |
2e17c7c6 JB |
3332 | static inline void assfail(char *expr, char *file, int line) |
3333 | { | |
efe120a0 | 3334 | pr_err("BTRFS: assertion failed: %s, file: %s, line: %d", |
2e17c7c6 JB |
3335 | expr, file, line); |
3336 | BUG(); | |
3337 | } | |
3338 | ||
3339 | #define ASSERT(expr) \ | |
3340 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3341 | #else | |
3342 | #define ASSERT(expr) ((void)0) | |
3343 | #endif | |
3344 | ||
533574c6 | 3345 | __printf(5, 6) |
c0d19e2b | 3346 | __cold |
34d97007 | 3347 | void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3348 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3349 | |
e33e17ee | 3350 | const char *btrfs_decode_error(int errno); |
533574c6 | 3351 | |
c0d19e2b | 3352 | __cold |
49b25e05 JM |
3353 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
3354 | struct btrfs_root *root, const char *function, | |
3355 | unsigned int line, int errno); | |
3356 | ||
c5f4ccb2 AJ |
3357 | /* |
3358 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3359 | * detected, that way the exact line number is reported. | |
3360 | */ | |
3361 | #define btrfs_abort_transaction(trans, root, errno) \ | |
3362 | do { \ | |
3363 | /* Report first abort since mount */ \ | |
3364 | if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED, \ | |
3365 | &((root)->fs_info->fs_state))) { \ | |
3366 | WARN(1, KERN_DEBUG \ | |
3367 | "BTRFS: Transaction aborted (error %d)\n", \ | |
3368 | (errno)); \ | |
3369 | } \ | |
3370 | __btrfs_abort_transaction((trans), (root), __func__, \ | |
3371 | __LINE__, (errno)); \ | |
3372 | } while (0) | |
3373 | ||
3374 | #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ | |
3375 | do { \ | |
3376 | __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ | |
3377 | (errno), fmt, ##args); \ | |
3378 | } while (0) | |
3379 | ||
3380 | __printf(5, 6) | |
3381 | __cold | |
3382 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, | |
3383 | unsigned int line, int errno, const char *fmt, ...); | |
3384 | /* | |
3385 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3386 | * will panic(). Otherwise we BUG() here. | |
3387 | */ | |
3388 | #define btrfs_panic(fs_info, errno, fmt, args...) \ | |
3389 | do { \ | |
3390 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ | |
3391 | BUG(); \ | |
3392 | } while (0) | |
3393 | ||
3394 | ||
3395 | /* compatibility and incompatibility defines */ | |
3396 | ||
2b0ce2c2 MH |
3397 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3398 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3399 | ||
3400 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3401 | u64 flag) | |
3402 | { | |
3403 | struct btrfs_super_block *disk_super; | |
3404 | u64 features; | |
3405 | ||
3406 | disk_super = fs_info->super_copy; | |
3407 | features = btrfs_super_incompat_flags(disk_super); | |
3408 | if (!(features & flag)) { | |
ceda0864 MX |
3409 | spin_lock(&fs_info->super_lock); |
3410 | features = btrfs_super_incompat_flags(disk_super); | |
3411 | if (!(features & flag)) { | |
3412 | features |= flag; | |
3413 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3414 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3415 | flag); |
3416 | } | |
3417 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3418 | } |
3419 | } | |
3420 | ||
1abfbcdf OS |
3421 | #define btrfs_clear_fs_incompat(__fs_info, opt) \ |
3422 | __btrfs_clear_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3423 | ||
3424 | static inline void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, | |
3425 | u64 flag) | |
3426 | { | |
3427 | struct btrfs_super_block *disk_super; | |
3428 | u64 features; | |
3429 | ||
3430 | disk_super = fs_info->super_copy; | |
3431 | features = btrfs_super_incompat_flags(disk_super); | |
3432 | if (features & flag) { | |
3433 | spin_lock(&fs_info->super_lock); | |
3434 | features = btrfs_super_incompat_flags(disk_super); | |
3435 | if (features & flag) { | |
3436 | features &= ~flag; | |
3437 | btrfs_set_super_incompat_flags(disk_super, features); | |
3438 | btrfs_info(fs_info, "clearing %llu feature flag", | |
3439 | flag); | |
3440 | } | |
3441 | spin_unlock(&fs_info->super_lock); | |
3442 | } | |
3443 | } | |
3444 | ||
3173a18f JB |
3445 | #define btrfs_fs_incompat(fs_info, opt) \ |
3446 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3447 | ||
9780c497 | 3448 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) |
3173a18f JB |
3449 | { |
3450 | struct btrfs_super_block *disk_super; | |
3451 | disk_super = fs_info->super_copy; | |
3452 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3453 | } | |
3454 | ||
1abfbcdf OS |
3455 | #define btrfs_set_fs_compat_ro(__fs_info, opt) \ |
3456 | __btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3457 | ||
3458 | static inline void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3459 | u64 flag) | |
3460 | { | |
3461 | struct btrfs_super_block *disk_super; | |
3462 | u64 features; | |
3463 | ||
3464 | disk_super = fs_info->super_copy; | |
3465 | features = btrfs_super_compat_ro_flags(disk_super); | |
3466 | if (!(features & flag)) { | |
3467 | spin_lock(&fs_info->super_lock); | |
3468 | features = btrfs_super_compat_ro_flags(disk_super); | |
3469 | if (!(features & flag)) { | |
3470 | features |= flag; | |
3471 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3472 | btrfs_info(fs_info, "setting %llu ro feature flag", | |
3473 | flag); | |
3474 | } | |
3475 | spin_unlock(&fs_info->super_lock); | |
3476 | } | |
3477 | } | |
3478 | ||
3479 | #define btrfs_clear_fs_compat_ro(__fs_info, opt) \ | |
3480 | __btrfs_clear_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3481 | ||
3482 | static inline void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, | |
3483 | u64 flag) | |
3484 | { | |
3485 | struct btrfs_super_block *disk_super; | |
3486 | u64 features; | |
3487 | ||
3488 | disk_super = fs_info->super_copy; | |
3489 | features = btrfs_super_compat_ro_flags(disk_super); | |
3490 | if (features & flag) { | |
3491 | spin_lock(&fs_info->super_lock); | |
3492 | features = btrfs_super_compat_ro_flags(disk_super); | |
3493 | if (features & flag) { | |
3494 | features &= ~flag; | |
3495 | btrfs_set_super_compat_ro_flags(disk_super, features); | |
3496 | btrfs_info(fs_info, "clearing %llu ro feature flag", | |
3497 | flag); | |
3498 | } | |
3499 | spin_unlock(&fs_info->super_lock); | |
3500 | } | |
3501 | } | |
3502 | ||
3503 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
3504 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
3505 | ||
3506 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
3507 | { | |
3508 | struct btrfs_super_block *disk_super; | |
3509 | disk_super = fs_info->super_copy; | |
3510 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
3511 | } | |
3512 | ||
33268eaf | 3513 | /* acl.c */ |
0eda294d | 3514 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 3515 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 3516 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
3517 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3518 | struct inode *inode, struct inode *dir); | |
9b89d95a | 3519 | #else |
ed8f3737 | 3520 | #define btrfs_get_acl NULL |
996a710d | 3521 | #define btrfs_set_acl NULL |
9b89d95a LZ |
3522 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
3523 | struct inode *inode, struct inode *dir) | |
3524 | { | |
3525 | return 0; | |
3526 | } | |
9b89d95a | 3527 | #endif |
0f9dd46c | 3528 | |
5d4f98a2 YZ |
3529 | /* relocation.c */ |
3530 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
3531 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
3532 | struct btrfs_root *root); | |
3533 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
3534 | struct btrfs_root *root); | |
3535 | int btrfs_recover_relocation(struct btrfs_root *root); | |
3536 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
3537 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
3538 | struct btrfs_root *root, struct extent_buffer *buf, | |
3539 | struct extent_buffer *cow); | |
147d256e | 3540 | void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, |
3fd0a558 | 3541 | u64 *bytes_to_reserve); |
49b25e05 | 3542 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 3543 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
3544 | |
3545 | /* scrub.c */ | |
aa1b8cd4 SB |
3546 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
3547 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 3548 | int readonly, int is_dev_replace); |
143bede5 | 3549 | void btrfs_scrub_pause(struct btrfs_root *root); |
143bede5 | 3550 | void btrfs_scrub_continue(struct btrfs_root *root); |
aa1b8cd4 SB |
3551 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
3552 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
3553 | struct btrfs_device *dev); | |
a2de733c AJ |
3554 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, |
3555 | struct btrfs_scrub_progress *progress); | |
c404e0dc MX |
3556 | |
3557 | /* dev-replace.c */ | |
3558 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
3559 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4245215d MX |
3560 | void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount); |
3561 | ||
3562 | static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) | |
3563 | { | |
3564 | btrfs_bio_counter_sub(fs_info, 1); | |
3565 | } | |
a2de733c | 3566 | |
7414a03f AJ |
3567 | /* reada.c */ |
3568 | struct reada_control { | |
3569 | struct btrfs_root *root; /* tree to prefetch */ | |
3570 | struct btrfs_key key_start; | |
3571 | struct btrfs_key key_end; /* exclusive */ | |
3572 | atomic_t elems; | |
3573 | struct kref refcnt; | |
3574 | wait_queue_head_t wait; | |
3575 | }; | |
3576 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
3577 | struct btrfs_key *start, struct btrfs_key *end); | |
3578 | int btrfs_reada_wait(void *handle); | |
3579 | void btrfs_reada_detach(void *handle); | |
02873e43 ZL |
3580 | int btree_readahead_hook(struct btrfs_fs_info *fs_info, |
3581 | struct extent_buffer *eb, u64 start, int err); | |
7414a03f | 3582 | |
95a06077 JS |
3583 | static inline int is_fstree(u64 rootid) |
3584 | { | |
3585 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
e09fe2d2 QW |
3586 | ((s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID && |
3587 | !btrfs_qgroup_level(rootid))) | |
95a06077 JS |
3588 | return 1; |
3589 | return 0; | |
3590 | } | |
210549eb DS |
3591 | |
3592 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
3593 | { | |
3594 | return signal_pending(current); | |
3595 | } | |
3596 | ||
aaedb55b JB |
3597 | /* Sanity test specific functions */ |
3598 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3599 | void btrfs_test_destroy_inode(struct inode *inode); | |
3600 | #endif | |
210549eb | 3601 | |
fccb84c9 DS |
3602 | static inline int btrfs_test_is_dummy_root(struct btrfs_root *root) |
3603 | { | |
3604 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
3605 | if (unlikely(test_bit(BTRFS_ROOT_DUMMY_ROOT, &root->state))) | |
3606 | return 1; | |
3607 | #endif | |
3608 | return 0; | |
3609 | } | |
3610 | ||
eb60ceac | 3611 | #endif |