blob: 3816e5477db1e743afeaf707c1971f1dbdce1901 (
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
31
32
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _RAID0_H
#define _RAID0_H
struct strip_zone {
sector_t zone_end; /* Start of the next zone (in sectors) */
sector_t dev_start; /* Zone offset in real dev (in sectors) */
int nb_dev; /* # of devices attached to the zone */
};
/* Linux 3.14 (20d0189b101) made an unintended change to
* the RAID0 layout for multi-zone arrays (where devices aren't all
* the same size.
* RAID0_ORIG_LAYOUT restores the original layout
* RAID0_ALT_MULTIZONE_LAYOUT uses the altered layout
* The layouts are identical when there is only one zone (all
* devices the same size).
*/
enum r0layout {
RAID0_ORIG_LAYOUT = 1,
RAID0_ALT_MULTIZONE_LAYOUT = 2,
};
struct r0conf {
struct strip_zone *strip_zone;
struct md_rdev **devlist; /* lists of rdevs, pointed to
* by strip_zone->dev */
int nr_strip_zones;
enum r0layout layout;
};
#endif
|
