linux/drivers/md/multipath.h
NeilBrown bff61975b3 md: move lots of #include lines out of .h files and into .c
This makes the includes more explicit, and is preparation for moving
md_k.h to drivers/md/md.h

Remove include/raid/md.h as its only remaining use was to #include
other files.

Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31 14:33:13 +11:00

40 lines
884 B
C

#ifndef _MULTIPATH_H
#define _MULTIPATH_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