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32 lines
892 B
32 lines
892 B
/* 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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