On Wed, Jul 28, 2010 at 04:46:54PM +0800, Wu Fengguang wrote: > And the wait page-by-page behavior of pageout(SYNC) will lead to very > long stall time if running into some range of dirty pages. So it's bad > idea anyway to call wait_on_page_writeback() inside pageout(). Although we remove it in pageout, shrink_page_list still has it. So it would result in long stall. And it is for lumpy reclaim which means it's a trade-off, I think. -- Kind regards, Minchan Kim -- 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>