From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Tue, 12 Feb 2013 00:01:21 +0000 (-0500)
Subject: NFSv4.1: Fix an ABBA locking issue with session and state serialisation
X-Git-Tag: v3.9-rc1~132^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c8da19b9866ea84e9ad1c369393ea95d54ee7845;p=pandora-kernel.git

NFSv4.1: Fix an ABBA locking issue with session and state serialisation

Ensure that if nfs_wait_on_sequence() causes our rpc task to wait for
an NFSv4 state serialisation lock, then we also drop the session slot.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
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