4 #include <linux/raid/md.h>
6 struct multipath_info
{
10 struct multipath_private_data
{
12 struct multipath_info
*multipaths
;
15 spinlock_t device_lock
;
20 typedef struct multipath_private_data multipath_conf_t
;
23 * this is the only point in the RAID code where we violate
24 * C type safety. mddev->private is an 'opaque' pointer.
26 #define mddev_to_conf(mddev) ((multipath_conf_t *) mddev->private)
29 * this is our 'private' 'collective' MULTIPATH buffer head.
30 * it contains information about what kind of IO operations were started
31 * for this MULTIPATH operation, and about their status:
36 struct bio
*master_bio
;
39 struct multipath_bh
*next_mp
; /* next for retry */