 */
static void io_submit_state_start(struct io_submit_state *state,
				  unsigned int max_ios)
{
	state->plug_started = false;
	state->ios_left = max_ios;
	/* set only head, no need to init link_last in advance */
	state->link.head = NULL;
 */
static void io_submit_state_start(struct io_submit_state *state,
				  unsigned int max_ios)
{
	state->plug_started = false;
	state->ios_left = max_ios;
	 
	state->link.head = NULL;