-static struct io_op *poke_writer(struct io_conn *conn, struct buffer *buf);
-static struct io_op *poke_reader(struct io_conn *conn, struct buffer *buf);
+static struct io_plan *poke_writer(struct io_conn *conn, struct buffer *buf);
+static struct io_plan *poke_reader(struct io_conn *conn, struct buffer *buf);