udf_free_allocated_space
udf_free_allocated_space(udf_node->ump, lb_num, vpart_num, 1);
udf_free_allocated_space(ump, lb_num,
udf_free_allocated_space(ump, lb_num, vpart_num, num_lb);
udf_free_allocated_space(ump, lb_num, vpart_num,
udf_free_allocated_space(ump, lb_num, vpart_num, 1);
udf_free_allocated_space(ump, lb_num, vpart_num, num_lb);
void udf_free_allocated_space(struct udf_mount *ump, uint32_t lb_num, uint16_t vpart_num, uint32_t num_lb);