[deliverable/linux.git] / drivers / md / multipath.h

#ifndef _MULTIPATH_H
#define _MULTIPATH_H

struct multipath_info {
	struct md_rdev	*rdev;
};

struct multipath_private_data {
	struct mddev			*mddev;
	struct multipath_info	*multipaths;
	int			raid_disks;
	spinlock_t		device_lock;
	struct list_head	retry_list;

	mempool_t		*pool;
};

typedef struct multipath_private_data multipath_conf_t;

/*
 * this is our 'private' 'collective' MULTIPATH buffer head.
 * it contains information about what kind of IO operations were started
 * for this MULTIPATH operation, and about their status:
 */

struct multipath_bh {
	struct mddev			*mddev;
	struct bio		*master_bio;
	struct bio		bio;
	int			path;
	struct list_head	retry_list;
};
#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef _MULTIPATH_H
	2	#define _MULTIPATH_H
	3
1da177e4	4	struct multipath_info {
3cb03002	5	struct md_rdev *rdev;
1da177e4 LT	6	};
	7
	8	struct multipath_private_data {
fd01b88c	9	struct mddev *mddev;
1da177e4 LT	10	struct multipath_info *multipaths;
1da177e4 LT	11	int raid_disks;
1da177e4 LT	12	spinlock_t device_lock;
	13	struct list_head retry_list;
	14
	15	mempool_t *pool;
	16	};
	17
	18	typedef struct multipath_private_data multipath_conf_t;
	19
1da177e4 LT	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
	26	struct multipath_bh {
fd01b88c	27	struct mddev *mddev;
1da177e4 LT	28	struct bio *master_bio;
	29	struct bio bio;
	30	int path;
	31	struct list_head retry_list;
	32	};
	33	#endif