summaryrefslogtreecommitdiffstats
path: root/include/linux/raid/raid0.h
blob: fd42aa87c39186791d1a06481fecb6ddd7c03326 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#ifndef _RAID0_H
#define _RAID0_H

#include <linux/raid/md.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