Revert "[PATCH] RPC,NFS: new rpc_pipefs patch"

This reverts 17f4e6febca160a9f9dd4bdece9784577a2f4524 commit.
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index b5b51c1..ab151bb 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -59,7 +59,7 @@
 
 	int			cl_nodelen;	/* nodename length */
 	char 			cl_nodename[UNX_MAXNODENAME];
-	struct dentry *		__cl_parent_dentry;
+	char			cl_pathname[30];/* Path in rpc_pipe_fs */
 	struct dentry *		cl_dentry;	/* inode */
 	struct rpc_clnt *	cl_parent;	/* Points to parent of clones */
 	struct rpc_rtt		cl_rtt_default;