FPI_TO_TAIL
if (fpi_flags & FPI_TO_TAIL)
__free_pages_ok(page, order, FPI_TO_TAIL);
FPI_SKIP_REPORT_NOTIFY | FPI_TO_TAIL);
__free_pages_ok(page, 0, FPI_TO_TAIL);
__free_pages_ok(page, MAX_PAGE_ORDER, FPI_TO_TAIL);