dm zoned: add debugging message for reading superblocks

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>

diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index 4a2e351..ef1524d 100644 (file)
--- a/drivers/md/dm-zoned-metadata.c
+++ b/drivers/md/dm-zoned-metadata.c
@@ -1105,6 +1105,10 @@ static int dmz_check_sb(struct dmz_metadata *zmd, unsigned int set)
  */
 static int dmz_read_sb(struct dmz_metadata *zmd, unsigned int set)
 {
+       dmz_zmd_debug(zmd, "read superblock set %d dev %s block %llu",
+                     set, zmd->sb[set].dev->name,
+                     zmd->sb[set].block);
+
        return dmz_rdwr_block(zmd->sb[set].dev, REQ_OP_READ,
                              zmd->sb[set].block, zmd->sb[set].mblk->page);
 }