bsd/vm/vnode_pager.c

510         int             last_pg;
585 	for (last_pg = pages_in_upl - 1; last_pg >= first_pg; last_pg--) {
586 		if (upl_page_present(pl, last_pg))
588 		if (last_pg == first_pg) {
597 	pages_in_upl = last_pg + 1;
598 	last_pg = first_pg;
600 	while (last_pg < pages_in_upl) {
604 	        for ( ; last_pg < pages_in_upl; last_pg++) {
605 		        if (upl_page_present(pl, last_pg))
611 	        for (start_pg = last_pg; last_pg < pages_in_upl; last_pg++) {
612 		        if (!upl_valid_page(pl, last_pg))
615 		if (last_pg > start_pg) {
622 		        xsize = (last_pg - start_pg) * PAGE_SIZE;
627 		if (last_pg == pages_in_upl)
635 		if (!upl_page_present(pl, last_pg)) {
641 		        last_pg++;
650 		for (start_pg = last_pg; last_pg < pages_in_upl; last_pg++) {
651 		        if (upl_valid_page(pl, last_pg) || !upl_page_present(pl, last_pg))
654 		if (last_pg > start_pg) {
656 		        xsize = (last_pg - start_pg) * PAGE_SIZE;