From 4f0b429df104c8ab41fa1b3013e13e0f95f3da52 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Mon, 20 May 2013 12:24:03 -0400
Subject: [PATCH] NFSv4.1: Enable state protection

Use the EXCHGID4_FLAG_BIND_PRINC_STATEID exchange_id flag to enable
stateid protection. This means that if we create a stateid using a
particular principal, then we must use the same principal if we
want to change that state.
IOW: if we OPEN a file using a particular credential, then we have
to use the same credential in subsequent OPEN_DOWNGRADE, CLOSE,
or DELEGRETURN operations that use that stateid.

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