On Thu, Aug 05, 2010 at 03:16:06PM +0900, KOSAKI Motohiro wrote: > isolate_lru_pages() doesn't only isolate LRU tail pages, but also > isolate neighbor pages of the eviction page. > > Now, the neighbor search don't stop even if neighbors can't be isolated. > It is silly. successful higher order allocation need full contenious > memory, even though only one page reclaim failure mean to fail making > enough contenious memory. > > Then, isolate_lru_pages() should stop to search PFN neighbor pages and > try to search next page on LRU soon. This patch does it. Also all of > lumpy reclaim failure account nr_lumpy_failed. > > Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Seems reasonable. Acked-by: Mel Gorman <mel@xxxxxxxxx> -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>