SUNRPC: Detect immediate closure of accepted sockets

This modification is useful for debugging issues that happen while
the socket is being initialised.

Signed-off-by: Trond Myklebust <[e-mail]>
Signed-off-by: J. Bruce Fields <[e-mail]>

net/sunrpc/svcsock.c

···
 	else
 		svc_tcp_init(svsk, serv);
 
-	dprintk("svc: svc_setup_socket created %p (inet %p)\n",
-				svsk, svsk->sk_sk);
+	dprintk("svc: svc_setup_socket created %p (inet %p), "
+			"listen %d close %d\n",
+			svsk, svsk->sk_sk,
+			test_bit(XPT_LISTENER, &svsk->sk_xprt.xpt_flags),
+			test_bit(XPT_CLOSE, &svsk->sk_xprt.xpt_flags));
 
 	return svsk;
 }