root/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_offset;    /* Zone offset in real dev */
        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