From: Yanchuan Nian <ycnian@gmail.com>
Date: Wed, 31 Oct 2012 08:05:48 +0000 (+0800)
Subject: nfs: Check whether a layout pointer is NULL before free it
X-Git-Tag: v3.7-rc4~1^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7175fe90153e6375082d65884fbb41ab3bbb4901;p=pandora-kernel.git

nfs: Check whether a layout pointer is NULL before free it

The new layout pointer in pnfs_find_alloc_layout() may be NULL because of
out of memory. we must do some check work, otherwise pnfs_free_layout_hdr()
will go wrong because it can not deal with a NULL pointer.

Signed-off-by: Yanchuan Nian <ycnian@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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