69 	restart = buf->head->commit != buf->head->read;  in tty_buffer_unlock_exclusive()
121 	while ((p = buf->head) != NULL) {  in tty_buffer_free_all()
122 		buf->head = p->next;  in tty_buffer_free_all()
131 	buf->head = &buf->sentinel;  in tty_buffer_free_all()
225 	while ((next = smp_load_acquire(&buf->head->next)) != NULL) {  in tty_buffer_flush()
226 		tty_buffer_free(port, buf->head);  in tty_buffer_flush()
227 		buf->head = next;  in tty_buffer_flush()
229 	buf->head->read = buf->head->commit;  in tty_buffer_flush()
415 receive_buf(struct tty_struct *tty, struct tty_buffer *head, int count)  in receive_buf()  argument
418 	unsigned char *p = char_buf_ptr(head, head->read);  in receive_buf()
421 	if (~head->flags & TTYB_NORMAL)  in receive_buf()
422 		f = flag_buf_ptr(head, head->read);  in receive_buf()
465 		struct tty_buffer *head = buf->head;  in flush_to_ldisc()  local
477 		next = smp_load_acquire(&head->next);  in flush_to_ldisc()
481 		count = smp_load_acquire(&head->commit) - head->read;  in flush_to_ldisc()
485 			buf->head = next;  in flush_to_ldisc()
486 			tty_buffer_free(port, head);  in flush_to_ldisc()
490 		count = receive_buf(tty, head, count);  in flush_to_ldisc()
493 		head->read += count;  in flush_to_ldisc()
532 	buf->head = &buf->sentinel;  in tty_buffer_init()