blob: d1c2a8d7839553f28e79b04ec2f585ac8634c815 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _MULTIPATH_H
2#define _MULTIPATH_H
3
Linus Torvalds1da177e2005-04-16 15:20:36 -07004struct multipath_info {
5 mdk_rdev_t *rdev;
6};
7
8struct multipath_private_data {
9 mddev_t *mddev;
10 struct multipath_info *multipaths;
11 int raid_disks;
12 int working_disks;
13 spinlock_t device_lock;
14 struct list_head retry_list;
15
16 mempool_t *pool;
17};
18
19typedef struct multipath_private_data multipath_conf_t;
20
21/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070022 * this is our 'private' 'collective' MULTIPATH buffer head.
23 * it contains information about what kind of IO operations were started
24 * for this MULTIPATH operation, and about their status:
25 */
26
27struct multipath_bh {
28 mddev_t *mddev;
29 struct bio *master_bio;
30 struct bio bio;
31 int path;
32 struct list_head retry_list;
33};
34#endif