Author: Steve Dickson <steved@redhat.com>
Date: Tue Oct 13 15:59:57 EDT 2009

To avoid hangs in the svc_unregister(), on version 4 mounts 
(and unmounts), when rpcbind is not running, make the nfs4 callback 
program an 'hidden' service by setting the 'vs_hidden' flag in the 
nfs4_callback_version structure. 

Signed-off-by: Steve Dickson <steved@redhat.com>

diff -up linux-2.6.31.x86_64/fs/nfs/callback_xdr.c.orig linux-2.6.31.x86_64/fs/nfs/callback_xdr.c
--- linux-2.6.31.x86_64/fs/nfs/callback_xdr.c.orig	2009-09-09 18:13:59.000000000 -0400
+++ linux-2.6.31.x86_64/fs/nfs/callback_xdr.c	2009-10-13 15:40:19.000000000 -0400
@@ -716,5 +716,6 @@ struct svc_version nfs4_callback_version
 	.vs_proc = nfs4_callback_procedures1,
 	.vs_xdrsize = NFS4_CALLBACK_XDRSIZE,
 	.vs_dispatch = NULL,
+	.vs_hidden = 1,
 };