1#ifndef _MULTIPATH_H
2#define _MULTIPATH_H
3
4struct 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/*
22 * 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
35