GD_SESSION_OFFSET  300 drivers/cdrom/gdrom.c 	return (cpu_to_be32(track & 0xffffff00) - GD_SESSION_OFFSET);
GD_SESSION_OFFSET  581 drivers/cdrom/gdrom.c 	block = blk_rq_pos(req)/GD_TO_BLK + GD_SESSION_OFFSET;