On Sun, 2011-09-25 at 16:54 +0800, Gilad Ben-Yossef wrote: > Use a cpumask to track CPUs with per-cpu pages in any zone > and only send an IPI requesting CPUs to drain these pages > to the buddy allocator if they actually have pages. Did you have evaluation why the fine-grained ipi is required? I suppose every CPU has local pages here. -- 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>