From 1b1a9b3163a83f52ea2ac333846d4dfd2c4edd90 Mon Sep 17 00:00:00 2001
From: "J. Bruce Fields" <bfields@citi.umich.edu>
Date: Wed, 12 Sep 2007 08:43:59 -0400
Subject: [PATCH] knfsd: don't shutdown callbacks until nfsv4 client is freed

If a callback still holds a reference on the client, then it may be
about to perform an rpc call, so it isn't safe to call rpc_shutdown().
(Though rpc_shutdown() does wait for any outstanding rpc's, it can't
know if a new rpc is about to be issued with that client.)

So, wait to shutdown the rpc_client until the reference count on the
client has gone to zero.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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