On Thu, 10 Nov 2011, Andrew Morton wrote: > > This patch once again prevents sync migration for transparent > > hugepage allocations as it is preferable to fail a THP allocation > > than stall. > > Who said? ;) Presumably some people would prefer to get lots of > huge pages for their 1000-hour compute job, and waiting a bit to get > those pages is acceptable. > Indeed. It seems like the behavior would better be controlled with /sys/kernel/mm/transparent_hugepage/defrag which is set aside specifically to control defragmentation for transparent hugepages and for that synchronous compaction should certainly apply. -- 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>