From: Lars Ellenberg <lars.ellenberg@linbit.com>
Date: Wed, 3 Mar 2010 01:25:33 +0000 (+0100)
Subject: drbd_disconnect: grab meta.socket mutex as well
X-Git-Tag: v2.6.34-rc4~11^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4589d7f829951c1713ef5a4ad1a9bb563da329b5;p=pandora-kernel.git

drbd_disconnect: grab meta.socket mutex as well

Fixes a race and potential kernel panic if e.g. the worker was just
about to send a few P_RS_IS_IN_SYNC via the meta socket for checksum
based resync, while the receiver destroys the sockets in
drbd_disconnect.

To make sure no-one is using the meta socket,
it is not enough to stop the asender...
Grab the meta socket mutex before destroying it.

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