From a0815d556d1cfb686b46995f86fb081f623fa720 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Wed, 25 Mar 2015 18:58:53 -0400
Subject: [PATCH] NFSv4.1/pnfs: Ensure that writes respect the O_SYNC flag when
 doing O_DIRECT

If the caller does not specify the O_SYNC flag, then it is legitimate
to return from O_DIRECT without doing a pNFS layoutcommit operation.
However if the file is opened O_DIRECT|O_SYNC then we'd better get it
right.

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