(12/28/11 11:35 PM), Hugh Dickins wrote:
Lumpy reclaim does well to stop at a PageAnon when there's no swap, but better is to stop at any PageSwapBacked, which includes shmem/tmpfs too. Signed-off-by: Hugh Dickins<hughd@xxxxxxxxxx> --- mm/vmscan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- mmotm.orig/mm/vmscan.c 2011-12-28 12:32:02.000000000 -0800 +++ mmotm/mm/vmscan.c 2011-12-28 16:49:36.463201033 -0800 @@ -1222,7 +1222,7 @@ static unsigned long isolate_lru_pages(u * anon page which don't already have a swap slot is * pointless. */ - if (nr_swap_pages<= 0&& PageAnon(cursor_page)&& + if (nr_swap_pages<= 0&& PageSwapBacked(cursor_page)&& !PageSwapCache(cursor_page)) break;
It seems obvious. Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>