On Wed, 18 Aug 2010, KAMEZAWA Hiroyuki wrote: > BTW, a nitpick. > > > @@ -143,6 +143,9 @@ static void refresh_zone_stat_thresholds(void) > > for_each_online_cpu(cpu) > > per_cpu_ptr(zone->pageset, cpu)->stat_threshold > > = threshold; > > + > > + zone->percpu_drift_mark = high_wmark_pages(zone) + > > + num_online_cpus() * threshold; > > } > > } > > This function is now called only at CPU_DEAD. IOW, not called at CPU_UP_PREPARE calculate_threshold() does its calculation based on the number of online cpus. Therefore the threshold may change if a cpu is brought down. -- 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>