From 09a330f4b9324e40947cc4fff13606719382c580 Mon Sep 17 00:00:00 2001
From: Benjamin Coddington <bcodding@redhat.com>
Date: Fri, 5 Dec 2014 21:52:49 -0500
Subject: [PATCH] NFS: remount with security change should return EINVAL

A remount that alters security flavors can appear to succeed when it should
instead return -EINVAL.  Check to see if the current security flavor exists
within the flavors specified in the remount options, and if not fail the
remount.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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