[deliverable/linux.git] / drivers / md / raid0.h

#ifndef _RAID0_H
#define _RAID0_H

struct strip_zone
{
	sector_t zone_start;	/* Zone offset in md_dev (in sectors) */
	sector_t dev_start;	/* Zone offset in real dev (in sectors) */
	sector_t sectors;	/* Zone size in sectors */
	int nb_dev;		/* # of devices attached to the zone */
	mdk_rdev_t **dev;	/* Devices attached to the zone */
};

struct raid0_private_data
{
	struct strip_zone **hash_table; /* Table of indexes into strip_zone */
	struct strip_zone *strip_zone;
	mdk_rdev_t **devlist; /* lists of rdevs, pointed to by strip_zone->dev */
	int nr_strip_zones;

	sector_t spacing;
	int sector_shift; /* shift this before divide by spacing */
};

typedef struct raid0_private_data raid0_conf_t;

#define mddev_to_conf(mddev) ((raid0_conf_t *) mddev->private)

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef _RAID0_H
	2	#define _RAID0_H
	3
1da177e4 LT	4	struct strip_zone
1da177e4 LT	5	{
6199d3db	6	sector_t zone_start; /* Zone offset in md_dev (in sectors) */
019c4e2f	7	sector_t dev_start; /* Zone offset in real dev (in sectors) */
83838ed8	8	sector_t sectors; /* Zone size in sectors */
1da177e4 LT	9	int nb_dev; /* # of devices attached to the zone */
	10	mdk_rdev_t *dev; / Devices attached to the zone */
	11	};
	12
	13	struct raid0_private_data
	14	{
	15	struct strip_zone *hash_table; / Table of indexes into strip_zone */
	16	struct strip_zone *strip_zone;
	17	mdk_rdev_t *devlist; / lists of rdevs, pointed to by strip_zone->dev */
	18	int nr_strip_zones;
	19
ccacc7d2 AN	20	sector_t spacing;
ccacc7d2 AN	21	int sector_shift; /* shift this before divide by spacing */
1da177e4 LT	22	};
	23
	24	typedef struct raid0_private_data raid0_conf_t;
	25
	26	#define mddev_to_conf(mddev) ((raid0_conf_t *) mddev->private)
	27
	28	#endif