> However the other type of works, if ever they come, can still block us > for long time. Will need a proper way to guarantee fairness. The simplistic way around this may be to refuse to queue new pageout works when found other type of works in the queue. Then vmscan will fall back to pageout(). It's rare condition anyway and hardly deserves a comprehensive fairness scheme. Thanks, Fengguang -- 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>