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#ifndef _MULTIPATH_H
#define _MULTIPATH_H
 
#include <linux/raid/md.h>
 
struct multipath_info {
	mdk_rdev_t	*rdev;
};
 
struct multipath_private_data {
	mddev_t			*mddev;
	struct multipath_info	*multipaths;
	int			raid_disks;
	int			working_disks;
	spinlock_t		device_lock;
	struct list_head	retry_list;
 
	mempool_t		*pool;
};
 
typedef struct multipath_private_data multipath_conf_t;
 
/*
 * this is the only point in the RAID code where we violate
 * C type safety. mddev->private is an 'opaque' pointer.
 */
#define mddev_to_conf(mddev) ((multipath_conf_t *) mddev->private)
 
/*
 * 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 {
	mddev_t			*mddev;
	struct bio		*master_bio;
	struct bio		bio;
	int			path;
	struct list_head	retry_list;
};
#endif