From 3c13cb5b647ebe36fb79128bc8b917d2a3317b65 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Tue, 18 Aug 2015 23:45:13 -0500
Subject: [PATCH] NFSv4.1/pnfs: Play safe w.r.t. close() races when
 return-on-close is set

If we have an OPEN_DOWNGRADE and CLOSE race with one another, we want
to ensure that the layout is forgotten by the client, so that we
start afresh with a new layoutget.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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