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dm zoned: Fix metadata zone size check

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When dm zoned has multiple devices, metadata is on the cache device, not
in random zones of the zoned devices. Then the number of metadata zones
shall be checked with the number of cache zones, not random zones.

Fixes: 34f5affd04 ("dm zoned: separate random and cache zones")
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Shin'ichiro Kawasaki 2020-06-18 11:48:10 +09:00 committed by Mike Snitzer
parent e0034433a7
commit b38c0ad57f
1 changed files with 2 additions and 1 deletions
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3
drivers/md/dm-zoned-metadata.c
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@ -1078,7 +1078,8 @@ static int dmz_check_sb(struct dmz_metadata *zmd, struct dmz_sb *dsb,
nr_meta_zones = (le32_to_cpu(sb->nr_meta_blocks) + zmd->zone_nr_blocks - 1)
>> zmd->zone_nr_blocks_shift;
if (!nr_meta_zones ||
nr_meta_zones >= zmd->nr_rnd_zones) {
(zmd->nr_devs <= 1 && nr_meta_zones >= zmd->nr_rnd_zones) ||
(zmd->nr_devs > 1 && nr_meta_zones >= zmd->nr_cache_zones)) {
dmz_dev_err(dev, "Invalid number of metadata blocks");
return -ENXIO;
}