On 10/30/2012 03:18 PM, Mel Gorman wrote:
restart: - wake_all_kswapd(order, zonelist, high_zoneidx, + /* + * kswapd is woken except when this is a THP request and compaction + * is deferred. If we are backing off reclaim/compaction then kswapd + * should not be awake aggressively reclaiming with no consumers of + * the freed pages + */ + if (!(is_thp_alloc(gfp_mask, order) && + compaction_deferred(preferred_zone, order))) + wake_all_kswapd(order, zonelist, high_zoneidx, zone_idx(preferred_zone));
What is special about thp allocations here? Surely other large allocations that keep failing should get the same treatment, of not waking up kswapd if compaction is deferred? -- 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>