From 2b83d3de4c18af49800e0b26ae013db4fcf43a4a Mon Sep 17 00:00:00 2001
From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Sun, 5 Jul 2015 20:06:38 -0400
Subject: [PATCH] NFSv4/pnfs: Ensure we don't miss a file extension

pNFS writes don't return attributes, however that doesn't mean that we
should ignore the fact that they may be extending the file. This patch
ensures that if a write is seen to extend the file, then we always set
an attribute barrier, and update the cached file size.

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