1 /* SPDX-License-Identifier: GPL-2.0 */
3 #ifndef BTRFS_EXTENT_IO_TREE_H
4 #define BTRFS_EXTENT_IO_TREE_H
6 struct extent_changeset;
7 struct io_failure_record;
9 /* Bits for the extent state */
10 #define EXTENT_DIRTY (1U << 0)
11 #define EXTENT_UPTODATE (1U << 1)
12 #define EXTENT_LOCKED (1U << 2)
13 #define EXTENT_NEW (1U << 3)
14 #define EXTENT_DELALLOC (1U << 4)
15 #define EXTENT_DEFRAG (1U << 5)
16 #define EXTENT_BOUNDARY (1U << 6)
17 #define EXTENT_NODATASUM (1U << 7)
18 #define EXTENT_CLEAR_META_RESV (1U << 8)
19 #define EXTENT_NEED_WAIT (1U << 9)
20 #define EXTENT_DAMAGED (1U << 10)
21 #define EXTENT_NORESERVE (1U << 11)
22 #define EXTENT_QGROUP_RESERVED (1U << 12)
23 #define EXTENT_CLEAR_DATA_RESV (1U << 13)
24 #define EXTENT_DELALLOC_NEW (1U << 14)
25 #define EXTENT_DO_ACCOUNTING (EXTENT_CLEAR_META_RESV | \
26 EXTENT_CLEAR_DATA_RESV)
27 #define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING)
30 * Redefined bits above which are used only in the device allocation tree,
31 * shouldn't be using EXTENT_LOCKED / EXTENT_BOUNDARY / EXTENT_CLEAR_META_RESV
32 * / EXTENT_CLEAR_DATA_RESV because they have special meaning to the bit
33 * manipulation functions
35 #define CHUNK_ALLOCATED EXTENT_DIRTY
36 #define CHUNK_TRIMMED EXTENT_DEFRAG
37 #define CHUNK_STATE_MASK (CHUNK_ALLOCATED | \
41 IO_TREE_FS_PINNED_EXTENTS,
42 IO_TREE_FS_EXCLUDED_EXTENTS,
43 IO_TREE_BTREE_INODE_IO,
45 IO_TREE_INODE_IO_FAILURE,
47 IO_TREE_TRANS_DIRTY_PAGES,
48 IO_TREE_ROOT_DIRTY_LOG_PAGES,
49 IO_TREE_INODE_FILE_EXTENT,
50 IO_TREE_LOG_CSUM_RANGE,
52 IO_TREE_DEVICE_ALLOC_STATE,
55 struct extent_io_tree {
57 struct btrfs_fs_info *fs_info;
62 /* Who owns this io tree, should be one of IO_TREE_* */
70 u64 end; /* inclusive */
71 struct rb_node rb_node;
73 /* ADD NEW ELEMENTS AFTER THIS */
78 struct io_failure_record *failrec;
80 #ifdef CONFIG_BTRFS_DEBUG
81 struct list_head leak_list;
85 int __init extent_state_cache_init(void);
86 void __cold extent_state_cache_exit(void);
88 void extent_io_tree_init(struct btrfs_fs_info *fs_info,
89 struct extent_io_tree *tree, unsigned int owner,
91 void extent_io_tree_release(struct extent_io_tree *tree);
93 int lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
94 struct extent_state **cached);
96 static inline int lock_extent(struct extent_io_tree *tree, u64 start, u64 end)
98 return lock_extent_bits(tree, start, end, NULL);
101 int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end);
103 int __init extent_io_init(void);
104 void __cold extent_io_exit(void);
106 u64 count_range_bits(struct extent_io_tree *tree,
107 u64 *start, u64 search_end,
108 u64 max_bytes, unsigned bits, int contig);
110 void free_extent_state(struct extent_state *state);
111 int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,
112 unsigned bits, int filled,
113 struct extent_state *cached_state);
114 int clear_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
115 unsigned bits, struct extent_changeset *changeset);
116 int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
117 unsigned bits, int wake, int delete,
118 struct extent_state **cached);
119 int __clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
120 unsigned bits, int wake, int delete,
121 struct extent_state **cached, gfp_t mask,
122 struct extent_changeset *changeset);
124 static inline int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end)
126 return clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, NULL);
129 static inline int unlock_extent_cached(struct extent_io_tree *tree, u64 start,
130 u64 end, struct extent_state **cached)
132 return __clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, cached,
136 static inline int unlock_extent_cached_atomic(struct extent_io_tree *tree,
137 u64 start, u64 end, struct extent_state **cached)
139 return __clear_extent_bit(tree, start, end, EXTENT_LOCKED, 1, 0, cached,
143 static inline int clear_extent_bits(struct extent_io_tree *tree, u64 start,
144 u64 end, unsigned bits)
148 if (bits & EXTENT_LOCKED)
151 return clear_extent_bit(tree, start, end, bits, wake, 0, NULL);
154 int set_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
155 unsigned bits, struct extent_changeset *changeset);
156 int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
157 unsigned bits, struct extent_state **cached_state, gfp_t mask);
158 int set_extent_bits_nowait(struct extent_io_tree *tree, u64 start, u64 end,
161 static inline int set_extent_bits(struct extent_io_tree *tree, u64 start,
162 u64 end, unsigned bits)
164 return set_extent_bit(tree, start, end, bits, NULL, GFP_NOFS);
167 static inline int clear_extent_uptodate(struct extent_io_tree *tree, u64 start,
168 u64 end, struct extent_state **cached_state)
170 return __clear_extent_bit(tree, start, end, EXTENT_UPTODATE, 0, 0,
171 cached_state, GFP_NOFS, NULL);
174 static inline int set_extent_dirty(struct extent_io_tree *tree, u64 start,
177 return set_extent_bit(tree, start, end, EXTENT_DIRTY, NULL, mask);
180 static inline int clear_extent_dirty(struct extent_io_tree *tree, u64 start,
181 u64 end, struct extent_state **cached)
183 return clear_extent_bit(tree, start, end,
184 EXTENT_DIRTY | EXTENT_DELALLOC |
185 EXTENT_DO_ACCOUNTING, 0, 0, cached);
188 int convert_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
189 unsigned bits, unsigned clear_bits,
190 struct extent_state **cached_state);
192 static inline int set_extent_delalloc(struct extent_io_tree *tree, u64 start,
193 u64 end, unsigned int extra_bits,
194 struct extent_state **cached_state)
196 return set_extent_bit(tree, start, end,
197 EXTENT_DELALLOC | EXTENT_UPTODATE | extra_bits,
198 cached_state, GFP_NOFS);
201 static inline int set_extent_defrag(struct extent_io_tree *tree, u64 start,
202 u64 end, struct extent_state **cached_state)
204 return set_extent_bit(tree, start, end,
205 EXTENT_DELALLOC | EXTENT_UPTODATE | EXTENT_DEFRAG,
206 cached_state, GFP_NOFS);
209 static inline int set_extent_new(struct extent_io_tree *tree, u64 start,
212 return set_extent_bit(tree, start, end, EXTENT_NEW, NULL, GFP_NOFS);
215 static inline int set_extent_uptodate(struct extent_io_tree *tree, u64 start,
216 u64 end, struct extent_state **cached_state, gfp_t mask)
218 return set_extent_bit(tree, start, end, EXTENT_UPTODATE,
222 int find_first_extent_bit(struct extent_io_tree *tree, u64 start,
223 u64 *start_ret, u64 *end_ret, unsigned bits,
224 struct extent_state **cached_state);
225 void find_first_clear_extent_bit(struct extent_io_tree *tree, u64 start,
226 u64 *start_ret, u64 *end_ret, unsigned bits);
227 int find_contiguous_extent_bit(struct extent_io_tree *tree, u64 start,
228 u64 *start_ret, u64 *end_ret, unsigned bits);
229 int extent_invalidatepage(struct extent_io_tree *tree,
230 struct page *page, unsigned long offset);
231 bool btrfs_find_delalloc_range(struct extent_io_tree *tree, u64 *start,
232 u64 *end, u64 max_bytes,
233 struct extent_state **cached_state);
235 /* This should be reworked in the future and put elsewhere. */
236 struct io_failure_record *get_state_failrec(struct extent_io_tree *tree, u64 start);
237 int set_state_failrec(struct extent_io_tree *tree, u64 start,
238 struct io_failure_record *failrec);
239 void btrfs_free_io_failure_record(struct btrfs_inode *inode, u64 start,
241 int free_io_failure(struct extent_io_tree *failure_tree,
242 struct extent_io_tree *io_tree,
243 struct io_failure_record *rec);
244 int clean_io_failure(struct btrfs_fs_info *fs_info,
245 struct extent_io_tree *failure_tree,
246 struct extent_io_tree *io_tree, u64 start,
247 struct page *page, u64 ino, unsigned int pg_offset);
249 #endif /* BTRFS_EXTENT_IO_TREE_H */