1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
#ifndef _BCACHEFS_IO_H
#define _BCACHEFS_IO_H
#include <linux/hash.h>
#include "io_types.h"
#define to_wbio(_bio) \
container_of((_bio), struct bch_write_bio, bio)
#define to_rbio(_bio) \
container_of((_bio), struct bch_read_bio, bio)
void bch2_bio_free_pages_pool(struct bch_fs *, struct bio *);
void bch2_bio_alloc_pages_pool(struct bch_fs *, struct bio *, size_t);
void bch2_submit_wbio_replicas(struct bch_write_bio *, struct bch_fs *,
enum bch_data_type, const struct bkey_i *);
enum bch_write_flags {
BCH_WRITE_ALLOC_NOWAIT = (1 << 0),
BCH_WRITE_CACHED = (1 << 1),
BCH_WRITE_FLUSH = (1 << 2),
BCH_WRITE_DATA_COMPRESSED = (1 << 3),
BCH_WRITE_THROTTLE = (1 << 4),
/* Internal: */
BCH_WRITE_JOURNAL_SEQ_PTR = (1 << 5),
BCH_WRITE_DONE = (1 << 6),
BCH_WRITE_LOOPED = (1 << 7),
};
static inline u64 *op_journal_seq(struct bch_write_op *op)
{
return (op->flags & BCH_WRITE_JOURNAL_SEQ_PTR)
? op->journal_seq_p : &op->journal_seq;
}
static inline struct write_point *foreground_write_point(struct bch_fs *c,
unsigned long v)
{
return c->write_points +
hash_long(v, ilog2(ARRAY_SIZE(c->write_points)));
}
void bch2_write_op_init(struct bch_write_op *, struct bch_fs *,
struct disk_reservation, struct write_point *,
struct bpos, u64 *, unsigned);
void bch2_write(struct closure *);
static inline struct bch_write_bio *wbio_init(struct bio *bio)
{
struct bch_write_bio *wbio = to_wbio(bio);
memset(wbio, 0, offsetof(struct bch_write_bio, bio));
return wbio;
}
void bch2_wake_delayed_writes(unsigned long data);
struct bch_devs_mask;
struct cache_promote_op;
struct extent_pick_ptr;
int __bch2_read_extent(struct bch_fs *, struct bch_read_bio *, struct bvec_iter,
struct bkey_s_c k, struct extent_pick_ptr *, unsigned);
void __bch2_read(struct bch_fs *, struct bch_read_bio *, struct bvec_iter,
u64, struct bch_devs_mask *, unsigned);
enum bch_read_flags {
BCH_READ_RETRY_IF_STALE = 1 << 0,
BCH_READ_MAY_PROMOTE = 1 << 1,
BCH_READ_USER_MAPPED = 1 << 2,
/* internal: */
BCH_READ_MUST_BOUNCE = 1 << 3,
BCH_READ_MUST_CLONE = 1 << 4,
BCH_READ_IN_RETRY = 1 << 5,
};
static inline void bch2_read_extent(struct bch_fs *c,
struct bch_read_bio *rbio,
struct bkey_s_c k,
struct extent_pick_ptr *pick,
unsigned flags)
{
rbio->_state = 0;
__bch2_read_extent(c, rbio, rbio->bio.bi_iter, k, pick, flags);
}
static inline void bch2_read(struct bch_fs *c, struct bch_read_bio *rbio,
u64 inode)
{
rbio->_state = 0;
__bch2_read(c, rbio, rbio->bio.bi_iter, inode, NULL,
BCH_READ_RETRY_IF_STALE|
BCH_READ_MAY_PROMOTE|
BCH_READ_USER_MAPPED);
}
static inline struct bch_read_bio *rbio_init(struct bio *bio)
{
struct bch_read_bio *rbio = to_rbio(bio);
rbio->_state = 0;
return rbio;
}
#endif /* _BCACHEFS_IO_H */
|
