dm table: fix "nvme" test

The strncmp function should compare 4 bytes.

Fixes: 22c11858e8002 ("dm: introduce DM_TYPE_NVME_BIO_BASED")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 5fe7ec356c333c940edb41e61f0e5844de0aea72..30b3294a8778e3339cb70ce2645f3b81d4000563 100644 (file)
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1755,7 +1755,7 @@ static int device_no_partial_completion(struct dm_target *ti, struct dm_dev *dev
        char b[BDEVNAME_SIZE];
 
        /* For now, NVMe devices are the only devices of this class */
-       return (strncmp(bdevname(dev->bdev, b), "nvme", 3) == 0);
+       return (strncmp(bdevname(dev->bdev, b), "nvme", 4) == 0);
 }
 
 static bool dm_table_does_not_support_partial_completion(struct dm_table *t)