drbd: drbd_drain_block(): Return 0 upon success and an error code otherwise

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Andreas Gruenbacher 2011-03-16 17:50:50 +01:00 • committed by Philipp Reisner
commit fc5be8397f