49 static volatile int ft_tail;	/* not volatile but need same type as head */  variable
74 		if (++ft_tail >= ft_nr_buffers) {  in ftape_next_buffer()
75 			ft_tail = 0;  in ftape_next_buffer()
77 		return ft_buffer[ft_tail];  in ftape_next_buffer()
86 	case ft_queue_tail: return ft_tail;  in ftape_buffer_id()
94 	case ft_queue_tail: return ft_buffer[ft_tail];  in ftape_get_buffer()
100 	ft_head = ft_tail = 0;  in ftape_reset_buffer()
455 	while (ft_buffer[ft_tail]->status == state) {  in ftape_wait_segment()
456 		TRACE(ft_t_flow, "state: %d", ft_buffer[ft_tail]->status);  in ftape_wait_segment()
477 	if (ft_buffer[ft_tail]->status != error) {  in ftape_wait_segment()
501 				if (ft_buffer[ft_tail]->retry > 0) {  in ftape_wait_segment()
503 					--ft_buffer[ft_tail]->retry;  in ftape_wait_segment()