Commit df699cc1 authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Mike Snitzer
Browse files

dm writecache: report invalid return from writecache_map helpers 



If some "writecache_map_*" function returns invalid state, it is a bug.
So, we should report it and not fail silently.

Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
parent 15cb6f39

drivers/md/dm-writecache.c

+4 −1
Original line number Original line Diff line number Diff line
@@ -1545,10 +1545,13 @@ static int writecache_map(struct dm_target *ti, struct bio *bio) 
		return DM_MAPIO_SUBMITTED;

		return DM_MAPIO_SUBMITTED;





	case WC_MAP_ERROR:

	case WC_MAP_ERROR:

	default:

		wc_unlock(wc);

		wc_unlock(wc);

		bio_io_error(bio);

		bio_io_error(bio);

		return DM_MAPIO_SUBMITTED;

		return DM_MAPIO_SUBMITTED;



	default:

		BUG();

		return -1;

	}

	}

}

}