From: Hannes Reinecke <hare@suse.de>
Date: Mon, 11 May 2020 10:24:29 +0200
Subject: [PATCH] dm zoned: ignore metadata zone in dmz_alloc_zone()
Git-commit: dc076c838f65723325001c977b39e55fc6ba0fa7
Patch-mainline: v5.8-rc1
References: bsc#1175995,jsc#SLE-15608
When looking up zones in dmz_alloc_zone() we need to ignore
metadata zones so as not to accidentally overwrite metadata.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Hannes Reinecke <hare@suse.com>
---
drivers/md/dm-zoned-metadata.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index 1290728c197e..939deed1606a 100644
--- a/drivers/md/dm-zoned-metadata.c
+++ b/drivers/md/dm-zoned-metadata.c
@@ -1907,7 +1907,13 @@ struct dm_zone *dmz_alloc_zone(struct dmz_metadata *zmd, unsigned long flags)
zone = NULL;
goto again;
}
+ if (dmz_is_meta(zone)) {
+ struct dmz_dev *dev = dmz_zone_to_dev(zmd, zone);
+ dmz_dev_warn(dev, "Zone %u has metadata", zone->id);
+ zone = NULL;
+ goto again;
+ }
return zone;
}
--
2.16.4