From: Lars Ellenberg <lars.ellenberg@linbit.com>
Date: Mon, 30 Jul 2012 07:08:25 +0000 (+0200)
Subject: drbd: report congestion if we are waiting for some userland callback
X-Git-Tag: v3.8-rc1~78^2~18^2~54
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6f3465ed82b10922effe364676103cbd4f2bcd81;p=pandora-kernel.git

drbd: report congestion if we are waiting for some userland callback

If the drbd worker thread is synchronously waiting for some userland
callback, we don't want some casual pageout to block on us.
Have drbd_congested() report congestion in that case.

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