diff mbox series

[10/11] dm-zoned: ignore metadata zone in dmz_alloc_zone()

Message ID 20200409064527.82992-11-hare@suse.de (mailing list archive)
State Changes Requested, archived
Delegated to: Mike Snitzer
Headers show
Series dm-zoned: metadata version 2 | expand

Commit Message

Hannes Reinecke April 9, 2020, 6:45 a.m. UTC 
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>
---
 drivers/md/dm-zoned-metadata.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index 211dee442a01..554ff32abada 100644
--- a/drivers/md/dm-zoned-metadata.c
+++ b/drivers/md/dm-zoned-metadata.c
@@ -1902,7 +1902,13 @@  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", dmz_id(zmd, zone));
+		zone = NULL;
+		goto again;
+	}
 	return zone;
 }