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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
49struct btrfs_inode {
50
51 struct btrfs_root *root;
52
53
54
55
56 struct btrfs_key location;
57
58
59 spinlock_t lock;
60
61
62 struct extent_map_tree extent_tree;
63
64
65 struct extent_io_tree io_tree;
66
67
68
69
70 struct extent_io_tree io_failure_tree;
71
72
73 struct mutex log_mutex;
74
75
76 struct mutex delalloc_mutex;
77
78
79 struct btrfs_ordered_inode_tree ordered_tree;
80
81
82
83
84
85 struct list_head delalloc_inodes;
86
87
88
89
90
91 struct list_head ordered_operations;
92
93
94 struct rb_node rb_node;
95
96 unsigned long runtime_flags;
97
98
99 atomic_t sync_writers;
100
101
102
103
104 u64 generation;
105
106
107
108
109 u64 last_trans;
110
111
112
113
114 u64 last_sub_trans;
115
116
117
118
119 u64 logged_trans;
120
121
122
123
124 u64 delalloc_bytes;
125
126
127
128
129
130
131 u64 disk_i_size;
132
133
134
135
136
137 u64 index_cnt;
138
139
140 u64 dir_index;
141
142
143
144
145
146
147 u64 last_unlink_trans;
148
149
150
151
152
153 u64 csum_bytes;
154
155
156 u32 flags;
157
158
159 unsigned long last_log_commit;
160
161
162
163
164
165
166
167 unsigned outstanding_extents;
168 unsigned reserved_extents;
169
170
171
172
173 unsigned force_compress;
174
175 struct btrfs_delayed_node *delayed_node;
176
177 struct inode vfs_inode;
178};
179
180extern unsigned char btrfs_filetype_table[];
181
182static inline struct btrfs_inode *BTRFS_I(struct inode *inode)
183{
184 return container_of(inode, struct btrfs_inode, vfs_inode);
185}
186
187static inline unsigned long btrfs_inode_hash(u64 objectid,
188 const struct btrfs_root *root)
189{
190 u64 h = objectid ^ (root->objectid * GOLDEN_RATIO_PRIME);
191
192#if BITS_PER_LONG == 32
193 h = (h >> 32) ^ (h & 0xffffffff);
194#endif
195
196 return (unsigned long)h;
197}
198
199static inline void btrfs_insert_inode_hash(struct inode *inode)
200{
201 unsigned long h = btrfs_inode_hash(inode->i_ino, BTRFS_I(inode)->root);
202
203 __insert_inode_hash(inode, h);
204}
205
206static inline u64 btrfs_ino(struct inode *inode)
207{
208 u64 ino = BTRFS_I(inode)->location.objectid;
209
210
211
212
213
214 if (!ino || BTRFS_I(inode)->location.type == BTRFS_ROOT_ITEM_KEY)
215 ino = inode->i_ino;
216 return ino;
217}
218
219static inline void btrfs_i_size_write(struct inode *inode, u64 size)
220{
221 i_size_write(inode, size);
222 BTRFS_I(inode)->disk_i_size = size;
223}
224
225static inline bool btrfs_is_free_space_inode(struct inode *inode)
226{
227 struct btrfs_root *root = BTRFS_I(inode)->root;
228
229 if (root == root->fs_info->tree_root &&
230 btrfs_ino(inode) != BTRFS_BTREE_INODE_OBJECTID)
231 return true;
232 if (BTRFS_I(inode)->location.objectid == BTRFS_FREE_INO_OBJECTID)
233 return true;
234 return false;
235}
236
237static inline int btrfs_inode_in_log(struct inode *inode, u64 generation)
238{
239 if (BTRFS_I(inode)->logged_trans == generation &&
240 BTRFS_I(inode)->last_sub_trans <=
241 BTRFS_I(inode)->last_log_commit &&
242 BTRFS_I(inode)->last_sub_trans <=
243 BTRFS_I(inode)->root->last_log_commit)
244 return 1;
245 return 0;
246}
247
248struct btrfs_dio_private {
249 struct inode *inode;
250 u64 logical_offset;
251 u64 disk_bytenr;
252 u64 bytes;
253 void *private;
254
255
256 atomic_t pending_bios;
257
258
259 int errors;
260
261
262 struct bio *orig_bio;
263
264
265 struct bio *dio_bio;
266 u8 csum[0];
267};
268
269
270
271
272
273
274static inline void btrfs_inode_block_unlocked_dio(struct inode *inode)
275{
276 set_bit(BTRFS_INODE_READDIO_NEED_LOCK, &BTRFS_I(inode)->runtime_flags);
277 smp_mb();
278}
279
280static inline void btrfs_inode_resume_unlocked_dio(struct inode *inode)
281{
282 smp_mb__before_clear_bit();
283 clear_bit(BTRFS_INODE_READDIO_NEED_LOCK,
284 &BTRFS_I(inode)->runtime_flags);
285}
286
287#endif
288