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#ifndef _RAID1_H
#define _RAID1_H
#include <linux/md.h>
struct mirror_info {
int number;
int raid_disk;
kdev_t dev;
int next;
int sect_limit;
/*
* State bits:
*/
int operational;
int write_only;
int spare;
};
struct raid1_data {
struct md_dev *mddev;
struct mirror_info mirrors[MD_SB_DISKS]; /* RAID1 devices, 2 to MD_SB_DISKS */
int raid_disks;
int working_disks; /* Number of working disks */
int last_used;
unsigned long next_sect;
int sect_count;
int resync_running;
};
/*
* this is our 'private' 'collective' RAID1 buffer head.
* it contains information about what kind of IO operations were started
* for this RAID5 operation, and about their status:
*/
struct raid1_bh {
unsigned int remaining;
int cmd;
unsigned long state;
struct md_dev *mddev;
struct buffer_head *master_bh;
struct buffer_head *mirror_bh [MD_SB_DISKS];
struct buffer_head bh_req;
struct buffer_head *next_retry;
};
#endif
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