[deliverable/linux.git] / include / linux / raid / raid0.h

#ifndef _RAID0_H
#define _RAID0_H

#include <linux/raid/md.h>

struct strip_zone
{
	sector_t zone_offset;	/* Zone offset in md_dev */
	sector_t dev_start;	/* Zone offset in real dev (in sectors) */
	sector_t size;		/* Zone size */
	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 hash_spacing;
	int preshift;			/* shift this before divide by hash_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
	4	#include <linux/raid/md.h>
	5
	6	struct strip_zone
	7	{
	8	sector_t zone_offset; /* Zone offset in md_dev */
019c4e2f	9	sector_t dev_start; /* Zone offset in real dev (in sectors) */
1da177e4 LT	10	sector_t size; /* Zone size */
	11	int nb_dev; /* # of devices attached to the zone */
	12	mdk_rdev_t *dev; / Devices attached to the zone */
	13	};
	14
	15	struct raid0_private_data
	16	{
	17	struct strip_zone *hash_table; / Table of indexes into strip_zone */
	18	struct strip_zone *strip_zone;
	19	mdk_rdev_t *devlist; / lists of rdevs, pointed to by strip_zone->dev */
	20	int nr_strip_zones;
	21
	22	sector_t hash_spacing;
	23	int preshift; /* shift this before divide by hash_spacing */
	24	};
	25
	26	typedef struct raid0_private_data raid0_conf_t;
	27
	28	#define mddev_to_conf(mddev) ((raid0_conf_t *) mddev->private)
	29
	30	#endif