1#ifndef _RAID0_H
 2#define _RAID0_H
 3
 4struct strip_zone
 5{
 6	sector_t zone_end;	/* Start of the next zone (in sectors) */
 7	sector_t dev_start;	/* Zone offset in real dev (in sectors) */
 8	int nb_dev;		/* # of devices attached to the zone */
 
 9};
10
11struct raid0_private_data
12{
13	struct strip_zone *strip_zone;
14	mdk_rdev_t **devlist; /* lists of rdevs, pointed to by strip_zone->dev */
15	int nr_strip_zones;
16};
 
 
17
18typedef struct raid0_private_data raid0_conf_t;
 
 
 
 
 
 
 
 
 
 
19
20#endif

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _RAID0_H
 3#define _RAID0_H
 4
 5struct strip_zone {
 
 6	sector_t zone_end;	/* Start of the next zone (in sectors) */
 7	sector_t dev_start;	/* Zone offset in real dev (in sectors) */
 8	int	 nb_dev;	/* # of devices attached to the zone */
 9	int	 disk_shift;	/* start disk for the original layout */
10};
11
12/* Linux 3.14 (20d0189b101) made an unintended change to
13 * the RAID0 layout for multi-zone arrays (where devices aren't all
14 * the same size.
15 * RAID0_ORIG_LAYOUT restores the original layout
16 * RAID0_ALT_MULTIZONE_LAYOUT uses the altered layout
17 * The layouts are identical when there is only one zone (all
18 * devices the same size).
19 */
20
21enum r0layout {
22	RAID0_ORIG_LAYOUT = 1,
23	RAID0_ALT_MULTIZONE_LAYOUT = 2,
24};
25struct r0conf {
26	struct strip_zone	*strip_zone;
27	struct md_rdev		**devlist; /* lists of rdevs, pointed to
28					    * by strip_zone->dev */
29	int			nr_strip_zones;
30	enum r0layout		layout;
31};
32
33#endif