[mirror_ubuntu-bionic-kernel.git] / drivers / md / multipath.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _MULTIPATH_H
#define _MULTIPATH_H

struct multipath_info {
	struct md_rdev	*rdev;
};

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

	mempool_t		*pool;
};

/*
 * 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
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef _MULTIPATH_H
	3	#define _MULTIPATH_H
	4
1da177e4	5	struct multipath_info {
3cb03002	6	struct md_rdev *rdev;
1da177e4 LT	7	};
1da177e4 LT	8
69724e28	9	struct mpconf {
fd01b88c	10	struct mddev *mddev;
1da177e4 LT	11	struct multipath_info *multipaths;
1da177e4 LT	12	int raid_disks;
1da177e4 LT	13	spinlock_t device_lock;
	14	struct list_head retry_list;
	15
	16	mempool_t *pool;
	17	};
	18
1da177e4 LT	19	/*
	20	* this is our 'private' 'collective' MULTIPATH buffer head.
	21	* it contains information about what kind of IO operations were started
	22	* for this MULTIPATH operation, and about their status:
	23	*/
	24
	25	struct multipath_bh {
fd01b88c	26	struct mddev *mddev;
1da177e4 LT	27	struct bio *master_bio;
	28	struct bio bio;
	29	int path;
	30	struct list_head retry_list;
	31	};
	32	#endif