nfs: reject changes to resvport and sharecache during remount
authorScott Mayhew <smayhew@redhat.com>
Mon, 4 Aug 2014 21:37:27 +0000 (17:37 -0400)
committerTrond Myklebust <trond.myklebust@primarydata.com>
Mon, 4 Aug 2014 21:41:52 +0000 (17:41 -0400)
commit71a6ec8ac587418ceb6b420def1ca44b334c1ff7
treeebe9b151f8d64a9f6c7ce9b69a1eef52821da287
parent5b53dc88b064cb93274e7fb81f8df477287c80df
nfs: reject changes to resvport and sharecache during remount

Commit c8e47028 made it possible to change resvport/noresvport and
sharecache/nosharecache via a remount operation, neither of which should be
allowed.

Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Fixes: c8e47028 (nfs: Apply NFS_MOUNT_CMP_FLAGMASK to nfs_compare_remount_data)
Cc: stable@vger.kernel.org # 3.16+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
fs/nfs/super.c