From faa4a54f0be15b5d81b574fb5a40db24345d1a6c Mon Sep 17 00:00:00 2001
From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Thu, 9 Jul 2015 18:24:07 +0200
Subject: [PATCH] pNFS: Don't throw out valid layout segments

It is OK for layout segments to remain hashed even if no-one holds any
references to them, provided that the segments are still valid.

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