From 0851de06174e9800e76b26e4be0ca94294c09c8c Mon Sep 17 00:00:00 2001
From: Alexandros Batsakis <batsakis@netapp.com>
Date: Fri, 5 Feb 2010 03:45:06 -0800
Subject: [PATCH] nfs4: renewd renew operations should take/put a client
 reference

renewd sends RENEW requests to the NFS server in order to renew state.
As the request is asynchronous, renewd should take a reference to the
nfs_client to prevent concurrent umounts from freeing the client

Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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