From 015f0212d51d85bd281a831639a769b4a1a3307a Mon Sep 17 00:00:00 2001
From: Jeff Layton <jlayton@redhat.com>
Date: Thu, 28 Oct 2010 10:10:37 -0400
Subject: [PATCH] nfs: handle lock context allocation failures in
 nfs_create_request

nfs_get_lock_context can return NULL on an allocation failure.
Regression introduced by commit f11ac8db.

Reported-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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