multipath.h revision fd01b88c75a718020ff77e7f560d33835e9b58de 
1#ifndef _MULTIPATH_H
2#define _MULTIPATH_H
3
4struct multipath_info {
5	struct md_rdev	*rdev;
6};
7
8struct multipath_private_data {
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
18typedef struct multipath_private_data multipath_conf_t;
19
20/*
21 * this is our 'private' 'collective' MULTIPATH buffer head.
22 * it contains information about what kind of IO operations were started
23 * for this MULTIPATH operation, and about their status:
24 */
25
26struct multipath_bh {
27	struct mddev			*mddev;
28	struct bio		*master_bio;
29	struct bio		bio;
30	int			path;
31	struct list_head	retry_list;
32};
33#endif
34