libceph: revoke mon_client messages on session restart

Revoke all mon_client messages when we shut down the old connection.
This is mostly moot since we are re-using the same ceph_connection,
but it is cleaner.
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>

net/ceph/mon_client.c

@@ -118,6 +118,9 @@ static void __close_session(struct ceph_mon_client *monc)
 {
 	dout("__close_session closing mon%d\n", monc->cur_mon);
 	ceph_msg_revoke(monc->m_auth);
+	ceph_msg_revoke_incoming(monc->m_auth_reply);
+	ceph_msg_revoke(monc->m_subscribe);
+	ceph_msg_revoke_incoming(monc->m_subscribe_ack);
 	ceph_con_close(&monc->con);
 	monc->cur_mon = -1;
 	monc->pending_auth = 0;
@@ -685,6 +688,7 @@ static void __resend_generic_request(struct ceph_mon_client *monc)
 	for (p = rb_first(&monc->generic_request_tree); p; p = rb_next(p)) {
 		req = rb_entry(p, struct ceph_mon_generic_request, node);
 		ceph_msg_revoke(req->request);
+		ceph_msg_revoke_incoming(req->reply);
 		ceph_con_send(&monc->con, ceph_msg_get(req->request));
 	}
 }