On Tue, May 06, 2014 at 07:22:52PM -0700, David Rientjes wrote: > Async compaction terminates prematurely when need_resched(), see > compact_checklock_irqsave(). This can never trigger, however, if the > cond_resched() in isolate_migratepages_range() always takes care of the > scheduling. > > If the cond_resched() actually triggers, then terminate this pageblock scan for > async compaction as well. Hello, I think that same logic would be helpful to cond_resched() in isolatate_freepages(). And, isolate_freepages() doesn't have exit logic when it find zone_lock contention. I think that fixing it is also helpful. Thanks. -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>