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19#ifndef __BTRFS_I__
20#define __BTRFS_I__
21
22#include <linux/hash.h>
23#include "extent_map.h"
24#include "extent_io.h"
25#include "ordered-data.h"
26#include "delayed-inode.h"
27
28
29
30
31
32
33
34
35#define BTRFS_INODE_ORDERED_DATA_CLOSE 0
36#define BTRFS_INODE_ORPHAN_META_RESERVED 1
37#define BTRFS_INODE_DUMMY 2
38#define BTRFS_INODE_IN_DEFRAG 3
39#define BTRFS_INODE_DELALLOC_META_RESERVED 4
40#define BTRFS_INODE_HAS_ORPHAN_ITEM 5
41#define BTRFS_INODE_HAS_ASYNC_EXTENT 6
42#define BTRFS_INODE_NEEDS_FULL_SYNC 7
43#define BTRFS_INODE_COPY_EVERYTHING 8
44#define BTRFS_INODE_IN_DELALLOC_LIST 9
45#define BTRFS_INODE_READDIO_NEED_LOCK 10
46#define BTRFS_INODE_HAS_PROPS 11
47
48
49
50
51
52
53
54
55#define BTRFS_INODE_BTREE_ERR 12
56#define BTRFS_INODE_BTREE_LOG1_ERR 13
57#define BTRFS_INODE_BTREE_LOG2_ERR 14
58
59
60struct btrfs_inode {
61
62 struct btrfs_root *root;
63
64
65
66
67 struct btrfs_key location;
68
69
70
71
72
73
74 spinlock_t lock;
75
76
77 struct extent_map_tree extent_tree;
78
79
80 struct extent_io_tree io_tree;
81
82
83
84
85 struct extent_io_tree io_failure_tree;
86
87
88 struct mutex log_mutex;
89
90
91 struct mutex delalloc_mutex;
92
93
94 struct btrfs_ordered_inode_tree ordered_tree;
95
96
97
98
99
100 struct list_head delalloc_inodes;
101
102
103 struct rb_node rb_node;
104
105 unsigned long runtime_flags;
106
107
108 atomic_t sync_writers;
109
110
111
112
113 u64 generation;
114
115
116
117
118 u64 last_trans;
119
120
121
122
123 u64 logged_trans;
124
125
126
127
128 int last_sub_trans;
129
130
131 int last_log_commit;
132
133
134
135
136 u64 delalloc_bytes;
137
138
139
140
141
142 u64 defrag_bytes;
143
144
145
146
147
148
149 u64 disk_i_size;
150
151
152
153
154
155 u64 index_cnt;
156
157
158 u64 dir_index;
159
160
161
162
163
164
165 u64 last_unlink_trans;
166
167
168
169
170
171 u64 csum_bytes;
172
173
174 u32 flags;
175
176
177
178
179
180
181
182 unsigned outstanding_extents;
183 unsigned reserved_extents;
184
185
186
187
188 unsigned force_compress;
189
190 struct btrfs_delayed_node *delayed_node;
191
192
193 struct timespec i_otime;
194
195
196 struct list_head delayed_iput;
197 long delayed_iput_count;
198
199 struct inode vfs_inode;
200};
201
202extern unsigned char btrfs_filetype_table[];
203
204static inline struct btrfs_inode *BTRFS_I(struct inode *inode)
205{
206 return container_of(inode, struct btrfs_inode, vfs_inode);
207}
208
209static inline unsigned long btrfs_inode_hash(u64 objectid,
210 const struct btrfs_root *root)
211{
212 u64 h = objectid ^ (root->objectid * GOLDEN_RATIO_PRIME);
213
214#if BITS_PER_LONG == 32
215 h = (h >> 32) ^ (h & 0xffffffff);
216#endif
217
218 return (unsigned long)h;
219}
220
221static inline void btrfs_insert_inode_hash(struct inode *inode)
222{
223 unsigned long h = btrfs_inode_hash(inode->i_ino, BTRFS_I(inode)->root);
224
225 __insert_inode_hash(inode, h);
226}
227
228static inline u64 btrfs_ino(struct inode *inode)
229{
230 u64 ino = BTRFS_I(inode)->location.objectid;
231
232
233
234
235
236 if (!ino || BTRFS_I(inode)->location.type == BTRFS_ROOT_ITEM_KEY)
237 ino = inode->i_ino;
238 return ino;
239}
240
241static inline void btrfs_i_size_write(struct inode *inode, u64 size)
242{
243 i_size_write(inode, size);
244 BTRFS_I(inode)->disk_i_size = size;
245}
246
247static inline bool btrfs_is_free_space_inode(struct inode *inode)
248{
249 struct btrfs_root *root = BTRFS_I(inode)->root;
250
251 if (root == root->fs_info->tree_root &&
252 btrfs_ino(inode) != BTRFS_BTREE_INODE_OBJECTID)
253 return true;
254 if (BTRFS_I(inode)->location.objectid == BTRFS_FREE_INO_OBJECTID)
255 return true;
256 return false;
257}
258
259static inline int btrfs_inode_in_log(struct inode *inode, u64 generation)
260{
261 int ret = 0;
262
263 spin_lock(&BTRFS_I(inode)->lock);
264 if (BTRFS_I(inode)->logged_trans == generation &&
265 BTRFS_I(inode)->last_sub_trans <=
266 BTRFS_I(inode)->last_log_commit &&
267 BTRFS_I(inode)->last_sub_trans <=
268 BTRFS_I(inode)->root->last_log_commit) {
269
270
271
272
273
274
275 smp_mb();
276 if (list_empty(&BTRFS_I(inode)->extent_tree.modified_extents))
277 ret = 1;
278 }
279 spin_unlock(&BTRFS_I(inode)->lock);
280 return ret;
281}
282
283#define BTRFS_DIO_ORIG_BIO_SUBMITTED 0x1
284
285struct btrfs_dio_private {
286 struct inode *inode;
287 unsigned long flags;
288 u64 logical_offset;
289 u64 disk_bytenr;
290 u64 bytes;
291 void *private;
292
293
294 atomic_t pending_bios;
295
296
297 int errors;
298
299
300 struct bio *orig_bio;
301
302
303 struct bio *dio_bio;
304
305
306
307
308
309 int (*subio_endio)(struct inode *, struct btrfs_io_bio *, int);
310};
311
312
313
314
315
316
317static inline void btrfs_inode_block_unlocked_dio(struct inode *inode)
318{
319 set_bit(BTRFS_INODE_READDIO_NEED_LOCK, &BTRFS_I(inode)->runtime_flags);
320 smp_mb();
321}
322
323static inline void btrfs_inode_resume_unlocked_dio(struct inode *inode)
324{
325 smp_mb__before_atomic();
326 clear_bit(BTRFS_INODE_READDIO_NEED_LOCK,
327 &BTRFS_I(inode)->runtime_flags);
328}
329
330bool btrfs_page_exists_in_range(struct inode *inode, loff_t start, loff_t end);
331
332#endif
333