From 77fede5137574813e415a4cf23038b6688ba2470 Mon Sep 17 00:00:00 2001
From: Philipp Reisner <philipp.reisner@linbit.com>
Date: Thu, 10 Nov 2011 21:19:11 +0100
Subject: [PATCH] drbd: Fix the WO=drain implementation for multiple volumes

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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