[TCPSP]Is here a race condition?

["yangrunhua" <yangrunhua@xxxxxxxxxxxx>]

>From tcpsp-0.0.3 tcp_conn_flush():
write_lock(&tcpsp_conn_lock);

                list_for_each_safe (e, nxt, &tcpsp_conn_tab1[idx]) {
                        cp = list_entry(e, struct tcpsp_conn, f_list);
                        write_unlock(&tcpsp_conn_lock);
                        TCPSP_DBG(4, "del splicing connection\n");
//cp now maybe already destroyed on timer softirq of another CPU
//so &cp->timer maybe dangerous, am I right?
                        if (del_timer(&cp->timer)) 
                                tcpsp_conn_expire_now(cp);

                        write_lock(&tcpsp_conn_lock);
                }
                write_unlock(&tcpsp_conn_lock);