[dm-devel] [PATCH] dm-integrity: Do not check integrity for failed read operations

[Hyunchul Lee]

From: Hyunchul Lee <cheol.lee at lge.com>

Even though read operations fail, dm_integrity_map_continue()
calls integrity_metadata() to check integrity. In this case,
just complete these.

Signed-off-by: Hyunchul Lee <cheol.lee at lge.com>
---
 drivers/md/dm-integrity.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index 10f123e..f99eee9 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -1697,7 +1697,11 @@ static void dm_integrity_map_continue(struct dm_integrity_io *dio, bool from_map
 
 	if (need_sync_io) {
 		wait_for_completion_io(&read_comp);
-		integrity_metadata(&dio->work);
+		if (likely(!bio->bi_status))
+			integrity_metadata(&dio->work);
+		else
+			dec_in_flight(dio);
+
 	} else {
 		INIT_WORK(&dio->work, integrity_metadata);
 		queue_work(ic->metadata_wq, &dio->work);
-- 
1.9.1