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dm zoned: avoid unnecessary device recalulation for secondary superblock

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The secondary superblock must reside on the same device as the primary
superblock, so there is no need to re-calculate the device.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Hannes Reinecke 2020-06-02 13:09:43 +02:00 committed by Mike Snitzer
parent 35d0c96e42
commit 1565929b87
1 changed files with 2 additions and 3 deletions
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5
drivers/md/dm-zoned-metadata.c
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@ -1135,7 +1135,7 @@ static int dmz_lookup_secondary_sb(struct dmz_metadata *zmd)
/* Bad first super block: search for the second one */
zmd->sb[1].block = zmd->sb[0].block + zone_nr_blocks;
zmd->sb[1].zone = zmd->sb[0].zone + 1;
zmd->sb[1].dev = dmz_zone_to_dev(zmd, zmd->sb[1].zone);
zmd->sb[1].dev = zmd->sb[0].dev;
for (i = 0; i < zmd->nr_rnd_zones - 1; i++) {
if (dmz_read_sb(zmd, 1) != 0)
break;
@ -1144,7 +1144,6 @@ static int dmz_lookup_secondary_sb(struct dmz_metadata *zmd)
return 0;
}
zmd->sb[1].block += zone_nr_blocks;
zmd->sb[1].dev = dmz_zone_to_dev(zmd, zmd->sb[1].zone + i);
}
dmz_free_mblock(zmd, mblk);
@ -1263,7 +1262,7 @@ static int dmz_load_sb(struct dmz_metadata *zmd)
if (!zmd->sb[1].zone)
zmd->sb[1].zone = zmd->sb[0].zone + zmd->nr_meta_zones;
zmd->sb[1].block = dmz_start_block(zmd, zmd->sb[1].zone);
zmd->sb[1].dev = dmz_zone_to_dev(zmd, zmd->sb[1].zone);
zmd->sb[1].dev = zmd->sb[0].dev;
ret = dmz_get_sb(zmd, 1);
} else
ret = dmz_lookup_secondary_sb(zmd);