drbd: Fix the WO=drain implementation for multiple volumes
authorPhilipp Reisner <philipp.reisner@linbit.com>
Thu, 10 Nov 2011 20:19:11 +0000 (21:19 +0100)
committerPhilipp Reisner <philipp.reisner@linbit.com>
Thu, 8 Nov 2012 15:58:08 +0000 (16:58 +0100)
Wait until IO is drained in all volumes.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

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