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Commit | Line | Data |
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d1310b2e CM |
1 | #ifndef __EXTENTIO__ |
2 | #define __EXTENTIO__ | |
3 | ||
4 | #include <linux/rbtree.h> | |
ac467772 | 5 | #include "ulist.h" |
d1310b2e CM |
6 | |
7 | /* bits for the extent state */ | |
9ee49a04 DS |
8 | #define EXTENT_DIRTY (1U << 0) |
9 | #define EXTENT_WRITEBACK (1U << 1) | |
10 | #define EXTENT_UPTODATE (1U << 2) | |
11 | #define EXTENT_LOCKED (1U << 3) | |
12 | #define EXTENT_NEW (1U << 4) | |
13 | #define EXTENT_DELALLOC (1U << 5) | |
14 | #define EXTENT_DEFRAG (1U << 6) | |
15 | #define EXTENT_BOUNDARY (1U << 9) | |
16 | #define EXTENT_NODATASUM (1U << 10) | |
17 | #define EXTENT_DO_ACCOUNTING (1U << 11) | |
18 | #define EXTENT_FIRST_DELALLOC (1U << 12) | |
19 | #define EXTENT_NEED_WAIT (1U << 13) | |
20 | #define EXTENT_DAMAGED (1U << 14) | |
21 | #define EXTENT_NORESERVE (1U << 15) | |
22 | #define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK) | |
23 | #define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING | EXTENT_FIRST_DELALLOC) | |
d1310b2e | 24 | |
261507a0 LZ |
25 | /* |
26 | * flags for bio submission. The high bits indicate the compression | |
27 | * type for this bio | |
28 | */ | |
c8b97818 | 29 | #define EXTENT_BIO_COMPRESSED 1 |
de0022b9 | 30 | #define EXTENT_BIO_TREE_LOG 2 |
4b384318 | 31 | #define EXTENT_BIO_PARENT_LOCKED 4 |
261507a0 | 32 | #define EXTENT_BIO_FLAG_SHIFT 16 |
c8b97818 | 33 | |
b4ce94de CM |
34 | /* these are bit numbers for test/set bit */ |
35 | #define EXTENT_BUFFER_UPTODATE 0 | |
b9473439 | 36 | #define EXTENT_BUFFER_DIRTY 2 |
a826d6dc | 37 | #define EXTENT_BUFFER_CORRUPT 3 |
ab0fff03 | 38 | #define EXTENT_BUFFER_READAHEAD 4 /* this got triggered by readahead */ |
3083ee2e JB |
39 | #define EXTENT_BUFFER_TREE_REF 5 |
40 | #define EXTENT_BUFFER_STALE 6 | |
0b32f4bb | 41 | #define EXTENT_BUFFER_WRITEBACK 7 |
656f30db | 42 | #define EXTENT_BUFFER_READ_ERR 8 /* read IO error */ |
815a51c7 | 43 | #define EXTENT_BUFFER_DUMMY 9 |
34b41ace | 44 | #define EXTENT_BUFFER_IN_TREE 10 |
656f30db | 45 | #define EXTENT_BUFFER_WRITE_ERR 11 /* write IO error */ |
b4ce94de | 46 | |
a791e35e | 47 | /* these are flags for extent_clear_unlock_delalloc */ |
c2790a2e JB |
48 | #define PAGE_UNLOCK (1 << 0) |
49 | #define PAGE_CLEAR_DIRTY (1 << 1) | |
50 | #define PAGE_SET_WRITEBACK (1 << 2) | |
51 | #define PAGE_END_WRITEBACK (1 << 3) | |
52 | #define PAGE_SET_PRIVATE2 (1 << 4) | |
704de49d | 53 | #define PAGE_SET_ERROR (1 << 5) |
a791e35e | 54 | |
d1310b2e CM |
55 | /* |
56 | * page->private values. Every page that is controlled by the extent | |
57 | * map has page->private set to one. | |
58 | */ | |
59 | #define EXTENT_PAGE_PRIVATE 1 | |
d1310b2e | 60 | |
70dec807 | 61 | struct extent_state; |
ea466794 | 62 | struct btrfs_root; |
facc8a22 | 63 | struct btrfs_io_bio; |
70dec807 | 64 | |
44b8bd7e | 65 | typedef int (extent_submit_bio_hook_t)(struct inode *inode, int rw, |
c8b97818 | 66 | struct bio *bio, int mirror_num, |
eaf25d93 | 67 | unsigned long bio_flags, u64 bio_offset); |
d1310b2e | 68 | struct extent_io_ops { |
c8b97818 | 69 | int (*fill_delalloc)(struct inode *inode, struct page *locked_page, |
771ed689 CM |
70 | u64 start, u64 end, int *page_started, |
71 | unsigned long *nr_written); | |
247e743c | 72 | int (*writepage_start_hook)(struct page *page, u64 start, u64 end); |
d1310b2e | 73 | int (*writepage_io_hook)(struct page *page, u64 start, u64 end); |
44b8bd7e | 74 | extent_submit_bio_hook_t *submit_bio_hook; |
64a16701 | 75 | int (*merge_bio_hook)(int rw, struct page *page, unsigned long offset, |
c8b97818 CM |
76 | size_t size, struct bio *bio, |
77 | unsigned long bio_flags); | |
ea466794 | 78 | int (*readpage_io_failed_hook)(struct page *page, int failed_mirror); |
facc8a22 MX |
79 | int (*readpage_end_io_hook)(struct btrfs_io_bio *io_bio, u64 phy_offset, |
80 | struct page *page, u64 start, u64 end, | |
81 | int mirror); | |
1259ab75 | 82 | int (*writepage_end_io_hook)(struct page *page, u64 start, u64 end, |
e6dcd2dc | 83 | struct extent_state *state, int uptodate); |
1bf85046 | 84 | void (*set_bit_hook)(struct inode *inode, struct extent_state *state, |
9ee49a04 | 85 | unsigned *bits); |
1bf85046 | 86 | void (*clear_bit_hook)(struct inode *inode, struct extent_state *state, |
9ee49a04 | 87 | unsigned *bits); |
1bf85046 JM |
88 | void (*merge_extent_hook)(struct inode *inode, |
89 | struct extent_state *new, | |
90 | struct extent_state *other); | |
91 | void (*split_extent_hook)(struct inode *inode, | |
92 | struct extent_state *orig, u64 split); | |
d1310b2e CM |
93 | }; |
94 | ||
95 | struct extent_io_tree { | |
96 | struct rb_root state; | |
97 | struct address_space *mapping; | |
98 | u64 dirty_bytes; | |
0b32f4bb | 99 | int track_uptodate; |
70dec807 | 100 | spinlock_t lock; |
e8c9f186 | 101 | const struct extent_io_ops *ops; |
d1310b2e CM |
102 | }; |
103 | ||
104 | struct extent_state { | |
105 | u64 start; | |
106 | u64 end; /* inclusive */ | |
d1310b2e | 107 | struct rb_node rb_node; |
9ed74f2d JB |
108 | |
109 | /* ADD NEW ELEMENTS AFTER THIS */ | |
d1310b2e CM |
110 | wait_queue_head_t wq; |
111 | atomic_t refs; | |
9ee49a04 | 112 | unsigned state; |
d1310b2e CM |
113 | |
114 | /* for use by the FS */ | |
115 | u64 private; | |
116 | ||
6d49ba1b | 117 | #ifdef CONFIG_BTRFS_DEBUG |
2d2ae547 | 118 | struct list_head leak_list; |
6d49ba1b | 119 | #endif |
d1310b2e CM |
120 | }; |
121 | ||
727011e0 CM |
122 | #define INLINE_EXTENT_BUFFER_PAGES 16 |
123 | #define MAX_INLINE_EXTENT_BUFFER_SIZE (INLINE_EXTENT_BUFFER_PAGES * PAGE_CACHE_SIZE) | |
d1310b2e CM |
124 | struct extent_buffer { |
125 | u64 start; | |
126 | unsigned long len; | |
b4ce94de | 127 | unsigned long bflags; |
f28491e0 | 128 | struct btrfs_fs_info *fs_info; |
3083ee2e | 129 | spinlock_t refs_lock; |
727011e0 | 130 | atomic_t refs; |
0b32f4bb | 131 | atomic_t io_pages; |
5cf1ab56 | 132 | int read_mirror; |
19fe0a8b | 133 | struct rcu_head rcu_head; |
5b25f70f | 134 | pid_t lock_owner; |
b4ce94de | 135 | |
bd681513 CM |
136 | /* count of read lock holders on the extent buffer */ |
137 | atomic_t write_locks; | |
138 | atomic_t read_locks; | |
139 | atomic_t blocking_writers; | |
140 | atomic_t blocking_readers; | |
141 | atomic_t spinning_readers; | |
142 | atomic_t spinning_writers; | |
656f30db FM |
143 | short lock_nested; |
144 | /* >= 0 if eb belongs to a log tree, -1 otherwise */ | |
145 | short log_index; | |
bd681513 CM |
146 | |
147 | /* protects write locks */ | |
148 | rwlock_t lock; | |
149 | ||
150 | /* readers use lock_wq while they wait for the write | |
151 | * lock holders to unlock | |
152 | */ | |
153 | wait_queue_head_t write_lock_wq; | |
b4ce94de | 154 | |
bd681513 CM |
155 | /* writers use read_lock_wq while they wait for readers |
156 | * to unlock | |
b4ce94de | 157 | */ |
bd681513 | 158 | wait_queue_head_t read_lock_wq; |
b8dae313 | 159 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; |
6d49ba1b ES |
160 | #ifdef CONFIG_BTRFS_DEBUG |
161 | struct list_head leak_list; | |
162 | #endif | |
d1310b2e CM |
163 | }; |
164 | ||
ac467772 QW |
165 | /* |
166 | * Structure to record how many bytes and which ranges are set/cleared | |
167 | */ | |
168 | struct extent_changeset { | |
169 | /* How many bytes are set/cleared in this operation */ | |
170 | u64 bytes_changed; | |
171 | ||
172 | /* Changed ranges */ | |
173 | struct ulist *range_changed; | |
174 | }; | |
175 | ||
261507a0 LZ |
176 | static inline void extent_set_compress_type(unsigned long *bio_flags, |
177 | int compress_type) | |
178 | { | |
179 | *bio_flags |= compress_type << EXTENT_BIO_FLAG_SHIFT; | |
180 | } | |
181 | ||
182 | static inline int extent_compress_type(unsigned long bio_flags) | |
183 | { | |
184 | return bio_flags >> EXTENT_BIO_FLAG_SHIFT; | |
185 | } | |
186 | ||
d1310b2e CM |
187 | struct extent_map_tree; |
188 | ||
189 | typedef struct extent_map *(get_extent_t)(struct inode *inode, | |
190 | struct page *page, | |
306e16ce | 191 | size_t pg_offset, |
d1310b2e CM |
192 | u64 start, u64 len, |
193 | int create); | |
194 | ||
195 | void extent_io_tree_init(struct extent_io_tree *tree, | |
f993c883 | 196 | struct address_space *mapping); |
d1310b2e | 197 | int try_release_extent_mapping(struct extent_map_tree *map, |
70dec807 CM |
198 | struct extent_io_tree *tree, struct page *page, |
199 | gfp_t mask); | |
f7a52a40 | 200 | int try_release_extent_buffer(struct page *page); |
d0082371 | 201 | int lock_extent(struct extent_io_tree *tree, u64 start, u64 end); |
1edbb734 | 202 | int lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, |
9ee49a04 | 203 | unsigned bits, struct extent_state **cached); |
d0082371 | 204 | int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end); |
2ac55d41 JB |
205 | int unlock_extent_cached(struct extent_io_tree *tree, u64 start, u64 end, |
206 | struct extent_state **cached, gfp_t mask); | |
d0082371 | 207 | int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end); |
d1310b2e | 208 | int extent_read_full_page(struct extent_io_tree *tree, struct page *page, |
8ddc7d9c | 209 | get_extent_t *get_extent, int mirror_num); |
4b384318 MF |
210 | int extent_read_full_page_nolock(struct extent_io_tree *tree, struct page *page, |
211 | get_extent_t *get_extent, int mirror_num); | |
d1310b2e CM |
212 | int __init extent_io_init(void); |
213 | void extent_io_exit(void); | |
214 | ||
215 | u64 count_range_bits(struct extent_io_tree *tree, | |
216 | u64 *start, u64 search_end, | |
9ee49a04 | 217 | u64 max_bytes, unsigned bits, int contig); |
d1310b2e | 218 | |
4845e44f | 219 | void free_extent_state(struct extent_state *state); |
d1310b2e | 220 | int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end, |
9ee49a04 | 221 | unsigned bits, int filled, |
41074888 | 222 | struct extent_state *cached_state); |
d1310b2e | 223 | int clear_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, |
9ee49a04 | 224 | unsigned bits, gfp_t mask); |
fefdc557 QW |
225 | int clear_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, |
226 | unsigned bits, gfp_t mask, | |
227 | struct extent_changeset *changeset); | |
e6dcd2dc | 228 | int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, |
9ee49a04 | 229 | unsigned bits, int wake, int delete, |
41074888 | 230 | struct extent_state **cached, gfp_t mask); |
d1310b2e | 231 | int set_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, |
9ee49a04 | 232 | unsigned bits, gfp_t mask); |
d38ed27f QW |
233 | int set_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, |
234 | unsigned bits, gfp_t mask, | |
235 | struct extent_changeset *changeset); | |
4845e44f | 236 | int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, |
9ee49a04 | 237 | unsigned bits, u64 *failed_start, |
4845e44f | 238 | struct extent_state **cached_state, gfp_t mask); |
d1310b2e | 239 | int set_extent_uptodate(struct extent_io_tree *tree, u64 start, u64 end, |
507903b8 | 240 | struct extent_state **cached_state, gfp_t mask); |
5fd02043 JB |
241 | int clear_extent_uptodate(struct extent_io_tree *tree, u64 start, u64 end, |
242 | struct extent_state **cached_state, gfp_t mask); | |
d1310b2e CM |
243 | int set_extent_new(struct extent_io_tree *tree, u64 start, u64 end, |
244 | gfp_t mask); | |
245 | int set_extent_dirty(struct extent_io_tree *tree, u64 start, u64 end, | |
246 | gfp_t mask); | |
247 | int clear_extent_dirty(struct extent_io_tree *tree, u64 start, u64 end, | |
248 | gfp_t mask); | |
462d6fac | 249 | int convert_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, |
9ee49a04 | 250 | unsigned bits, unsigned clear_bits, |
e6138876 | 251 | struct extent_state **cached_state, gfp_t mask); |
d1310b2e | 252 | int set_extent_delalloc(struct extent_io_tree *tree, u64 start, u64 end, |
2ac55d41 | 253 | struct extent_state **cached_state, gfp_t mask); |
9e8a4a8b LB |
254 | int set_extent_defrag(struct extent_io_tree *tree, u64 start, u64 end, |
255 | struct extent_state **cached_state, gfp_t mask); | |
d1310b2e | 256 | int find_first_extent_bit(struct extent_io_tree *tree, u64 start, |
9ee49a04 | 257 | u64 *start_ret, u64 *end_ret, unsigned bits, |
e6138876 | 258 | struct extent_state **cached_state); |
d1310b2e CM |
259 | int extent_invalidatepage(struct extent_io_tree *tree, |
260 | struct page *page, unsigned long offset); | |
261 | int extent_write_full_page(struct extent_io_tree *tree, struct page *page, | |
262 | get_extent_t *get_extent, | |
263 | struct writeback_control *wbc); | |
771ed689 CM |
264 | int extent_write_locked_range(struct extent_io_tree *tree, struct inode *inode, |
265 | u64 start, u64 end, get_extent_t *get_extent, | |
266 | int mode); | |
d1310b2e CM |
267 | int extent_writepages(struct extent_io_tree *tree, |
268 | struct address_space *mapping, | |
269 | get_extent_t *get_extent, | |
270 | struct writeback_control *wbc); | |
0b32f4bb JB |
271 | int btree_write_cache_pages(struct address_space *mapping, |
272 | struct writeback_control *wbc); | |
d1310b2e CM |
273 | int extent_readpages(struct extent_io_tree *tree, |
274 | struct address_space *mapping, | |
275 | struct list_head *pages, unsigned nr_pages, | |
276 | get_extent_t get_extent); | |
1506fcc8 YS |
277 | int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
278 | __u64 start, __u64 len, get_extent_t *get_extent); | |
d1310b2e CM |
279 | int get_state_private(struct extent_io_tree *tree, u64 start, u64 *private); |
280 | void set_page_extent_mapped(struct page *page); | |
281 | ||
f28491e0 | 282 | struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info, |
ce3e6984 | 283 | u64 start); |
3f556f78 DS |
284 | struct extent_buffer *alloc_dummy_extent_buffer(struct btrfs_fs_info *fs_info, |
285 | u64 start); | |
815a51c7 | 286 | struct extent_buffer *btrfs_clone_extent_buffer(struct extent_buffer *src); |
f28491e0 | 287 | struct extent_buffer *find_extent_buffer(struct btrfs_fs_info *fs_info, |
452c75c3 | 288 | u64 start); |
d1310b2e | 289 | void free_extent_buffer(struct extent_buffer *eb); |
3083ee2e | 290 | void free_extent_buffer_stale(struct extent_buffer *eb); |
bb82ab88 AJ |
291 | #define WAIT_NONE 0 |
292 | #define WAIT_COMPLETE 1 | |
293 | #define WAIT_PAGE_LOCK 2 | |
d1310b2e | 294 | int read_extent_buffer_pages(struct extent_io_tree *tree, |
a86c12c7 | 295 | struct extent_buffer *eb, u64 start, int wait, |
f188591e | 296 | get_extent_t *get_extent, int mirror_num); |
fd8b2b61 | 297 | void wait_on_extent_buffer_writeback(struct extent_buffer *eb); |
479ed9ab RD |
298 | |
299 | static inline unsigned long num_extent_pages(u64 start, u64 len) | |
300 | { | |
301 | return ((start + len + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT) - | |
302 | (start >> PAGE_CACHE_SHIFT); | |
303 | } | |
304 | ||
d1310b2e CM |
305 | static inline void extent_buffer_get(struct extent_buffer *eb) |
306 | { | |
307 | atomic_inc(&eb->refs); | |
308 | } | |
309 | ||
310 | int memcmp_extent_buffer(struct extent_buffer *eb, const void *ptrv, | |
311 | unsigned long start, | |
312 | unsigned long len); | |
313 | void read_extent_buffer(struct extent_buffer *eb, void *dst, | |
314 | unsigned long start, | |
315 | unsigned long len); | |
550ac1d8 GH |
316 | int read_extent_buffer_to_user(struct extent_buffer *eb, void __user *dst, |
317 | unsigned long start, | |
318 | unsigned long len); | |
d1310b2e CM |
319 | void write_extent_buffer(struct extent_buffer *eb, const void *src, |
320 | unsigned long start, unsigned long len); | |
321 | void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src, | |
322 | unsigned long dst_offset, unsigned long src_offset, | |
323 | unsigned long len); | |
324 | void memcpy_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset, | |
325 | unsigned long src_offset, unsigned long len); | |
326 | void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset, | |
327 | unsigned long src_offset, unsigned long len); | |
328 | void memset_extent_buffer(struct extent_buffer *eb, char c, | |
329 | unsigned long start, unsigned long len); | |
1d4284bd | 330 | void clear_extent_buffer_dirty(struct extent_buffer *eb); |
0b32f4bb JB |
331 | int set_extent_buffer_dirty(struct extent_buffer *eb); |
332 | int set_extent_buffer_uptodate(struct extent_buffer *eb); | |
333 | int clear_extent_buffer_uptodate(struct extent_buffer *eb); | |
334 | int extent_buffer_uptodate(struct extent_buffer *eb); | |
a26e8c9f | 335 | int extent_buffer_under_io(struct extent_buffer *eb); |
d1310b2e | 336 | int map_private_extent_buffer(struct extent_buffer *eb, unsigned long offset, |
a6591715 | 337 | unsigned long min_len, char **map, |
d1310b2e | 338 | unsigned long *map_start, |
a6591715 | 339 | unsigned long *map_len); |
4adaa611 CM |
340 | int extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end); |
341 | int extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end); | |
c2790a2e JB |
342 | int extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end, |
343 | struct page *locked_page, | |
9ee49a04 | 344 | unsigned bits_to_clear, |
c2790a2e | 345 | unsigned long page_ops); |
88f794ed MX |
346 | struct bio * |
347 | btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs, | |
348 | gfp_t gfp_flags); | |
9be3395b CM |
349 | struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs); |
350 | struct bio *btrfs_bio_clone(struct bio *bio, gfp_t gfp_mask); | |
4a54c8c1 | 351 | |
3ec706c8 | 352 | struct btrfs_fs_info; |
4a54c8c1 | 353 | |
1203b681 MX |
354 | int repair_io_failure(struct inode *inode, u64 start, u64 length, u64 logical, |
355 | struct page *page, unsigned int pg_offset, | |
356 | int mirror_num); | |
8b110e39 MX |
357 | int clean_io_failure(struct inode *inode, u64 start, struct page *page, |
358 | unsigned int pg_offset); | |
87826df0 | 359 | int end_extent_writepage(struct page *page, int err, u64 start, u64 end); |
ea466794 JB |
360 | int repair_eb_io_failure(struct btrfs_root *root, struct extent_buffer *eb, |
361 | int mirror_num); | |
2fe6303e MX |
362 | |
363 | /* | |
364 | * When IO fails, either with EIO or csum verification fails, we | |
365 | * try other mirrors that might have a good copy of the data. This | |
366 | * io_failure_record is used to record state as we go through all the | |
367 | * mirrors. If another mirror has good data, the page is set up to date | |
368 | * and things continue. If a good mirror can't be found, the original | |
369 | * bio end_io callback is called to indicate things have failed. | |
370 | */ | |
371 | struct io_failure_record { | |
372 | struct page *page; | |
373 | u64 start; | |
374 | u64 len; | |
375 | u64 logical; | |
376 | unsigned long bio_flags; | |
377 | int this_mirror; | |
378 | int failed_mirror; | |
379 | int in_validation; | |
380 | }; | |
381 | ||
f612496b | 382 | void btrfs_free_io_failure_record(struct inode *inode, u64 start, u64 end); |
2fe6303e MX |
383 | int btrfs_get_io_failure_record(struct inode *inode, u64 start, u64 end, |
384 | struct io_failure_record **failrec_ret); | |
385 | int btrfs_check_repairable(struct inode *inode, struct bio *failed_bio, | |
386 | struct io_failure_record *failrec, int fail_mirror); | |
387 | struct bio *btrfs_create_repair_bio(struct inode *inode, struct bio *failed_bio, | |
388 | struct io_failure_record *failrec, | |
389 | struct page *page, int pg_offset, int icsum, | |
8b110e39 MX |
390 | bio_end_io_t *endio_func, void *data); |
391 | int free_io_failure(struct inode *inode, struct io_failure_record *rec); | |
294e30fe JB |
392 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
393 | noinline u64 find_lock_delalloc_range(struct inode *inode, | |
394 | struct extent_io_tree *tree, | |
395 | struct page *locked_page, u64 *start, | |
396 | u64 *end, u64 max_bytes); | |
0d4cf4e6 | 397 | #endif |
faa2dbf0 | 398 | struct extent_buffer *alloc_test_extent_buffer(struct btrfs_fs_info *fs_info, |
ce3e6984 | 399 | u64 start); |
294e30fe | 400 | #endif |