Root/drivers/md/multipath.h

1#ifndef _MULTIPATH_H
2#define _MULTIPATH_H
3
4struct multipath_info {
5    struct md_rdev *rdev;
6};
7
8struct mpconf {
9    struct mddev *mddev;
10    struct multipath_info *multipaths;
11    int raid_disks;
12    spinlock_t device_lock;
13    struct list_head retry_list;
14
15    mempool_t *pool;
16};
17
18/*
19 * this is our 'private' 'collective' MULTIPATH buffer head.
20 * it contains information about what kind of IO operations were started
21 * for this MULTIPATH operation, and about their status:
22 */
23
24struct multipath_bh {
25    struct mddev *mddev;
26    struct bio *master_bio;
27    struct bio bio;
28    int path;
29    struct list_head retry_list;
30};
31#endif
32

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