From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Tue, 28 Jan 2014 14:37:16 +0000 (-0500)
Subject: NFS: Fix races in nfs_revalidate_mapping
X-Git-Tag: v3.14-rc1~15^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=17dfeb9113397a6119091a491ef7182649f0c5a9;p=pandora-kernel.git

NFS: Fix races in nfs_revalidate_mapping

Commit d529ef83c355f97027ff85298a9709fe06216a66 (NFS: fix the handling
of NFS_INO_INVALID_DATA flag in nfs_revalidate_mapping) introduces
a potential race, since it doesn't test the value of nfsi->cache_validity
and set the bitlock in nfsi->flags atomically.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: Jeff Layton <jlayton@redhat.com>
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