Commit ab37844d authored Jul 01, 2015 by Mikulas Patocka Committed by Mike Snitzer Aug 12, 2015

dm: test return value for DM_MAPIO_SUBMITTED



In properly written code we should not assume that DM_MAPIO_SUBMITTED is
zero. We should test the return value for DM_MAPIO_SUBMITTED rather than
testing it for zero.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

parent 4fb9aa5a

drivers/md/dm.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1466,7 +1466,7 @@ static void __map_bio(struct dm_target_io *tio)
		md = tio->io->md;
		dec_pending(tio->io, r);
		free_tio(md, tio);
		} else if (r) {
		} else if (r != DM_MAPIO_SUBMITTED) {
		DMWARN("unimplemented target map return value: %d", r);
		BUG();
		}