From 9f0f8e12c48e4bb89192a0de876c77dc1fbfaa75 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Thu, 26 Feb 2015 09:57:34 -0500
Subject: [PATCH] NFSv4: Pin the superblock while we're returning the
 delegation

This patch ensures that the superblock doesn't go ahead and disappear
underneath us while the state manager thread is returning delegations.

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