tree 26024381114970fa3ab1844f55b30755e7a32af3
parent 0ea9de0ea6a4e4a1d343130b2a159b4f986e288e
author Trond Myklebust <trond.myklebust@primarydata.com> 1390919836 -0500
committer Trond Myklebust <trond.myklebust@primarydata.com> 1390924028 -0500

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>