From: Lars Ellenberg <lars.ellenberg@linbit.com>
Date: Fri, 8 Jun 2012 12:17:36 +0000 (+0200)
Subject: drbd: fix null pointer dereference with on-congestion policy when diskless
X-Git-Tag: v3.5-rc6~20^2~4^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d5934e3c258fc5decc4103600c597086fd95a52;p=pandora-kernel.git

drbd: fix null pointer dereference with on-congestion policy when diskless

We must not look at mdev->actlog, unless we have a get_ldev() reference.
It also does not make much sense to try to disconnect or pull-ahead of
the peer, if we don't have good local data.

Only even consider congestion policies, if our local disk is D_UP_TO_DATE.

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