get_order
int order = get_order(size);
return vm->scratch_page.order == get_order(I915_GTT_PAGE_SIZE_64K);
if (get_order(st->sgl->length)) {
__free_pages(sg_page(sg), get_order(sg->length));
align = PAGE_SIZE << get_order(size);
size_t align = PAGE_SIZE << get_order(size);