5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
33 lines
892 B
C
33 lines
892 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _RAID0_H
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#define _RAID0_H
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struct strip_zone {
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sector_t zone_end; /* Start of the next zone (in sectors) */
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sector_t dev_start; /* Zone offset in real dev (in sectors) */
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int nb_dev; /* # of devices attached to the zone */
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};
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/* Linux 3.14 (20d0189b101) made an unintended change to
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* the RAID0 layout for multi-zone arrays (where devices aren't all
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* the same size.
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* RAID0_ORIG_LAYOUT restores the original layout
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* RAID0_ALT_MULTIZONE_LAYOUT uses the altered layout
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* The layouts are identical when there is only one zone (all
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* devices the same size).
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*/
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enum r0layout {
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RAID0_ORIG_LAYOUT = 1,
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RAID0_ALT_MULTIZONE_LAYOUT = 2,
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};
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struct r0conf {
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struct strip_zone *strip_zone;
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struct md_rdev **devlist; /* lists of rdevs, pointed to
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* by strip_zone->dev */
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int nr_strip_zones;
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enum r0layout layout;
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};
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#endif
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