From: Hannes Reinecke <hare@suse.de>
Date: Tue, 2 Jun 2020 13:09:42 +0200
Subject: [PATCH] dm zoned: add debugging message for reading superblocks
Git-commit: 35d0c96e422a484bbc5d4921fa20dcc880bfba2c
Patch-mainline: v5.8-rc1
References: bsc#1175995,jsc#SLE-15608

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>
Acked-by: Hannes Reinecke <hare@suse.com>
---
 drivers/md/dm-zoned-metadata.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index 4a2e351365c5..ef1524d5928a 100644
--- 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);
 }
-- 
2.16.4