From: Fred Isaman <iisaman@netapp.com>
Date: Wed, 15 Jun 2011 16:31:02 +0000 (-0400)
Subject: nfs4.1: prevent race that allowed use of freed layout in _pnfs_return_layout
X-Git-Tag: v3.0-rc5~51^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ea0ded748bdea78f9e2fefb571f7d6ce9edb4f89;p=pandora-kernel.git

nfs4.1: prevent race that allowed use of freed layout in _pnfs_return_layout

mark_matching_lsegs_invalid could put the last ref to the layout, so
the get_layout_hdr needs to be called first.

Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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