(2013/05/13 17:12), Mel Gorman wrote: > Simplistically, the anon and file LRU lists are scanned proportionally > depending on the value of vm.swappiness although there are other factors > taken into account by get_scan_count(). The patch "mm: vmscan: Limit > the number of pages kswapd reclaims" limits the number of pages kswapd > reclaims but it breaks this proportional scanning and may evenly shrink > anon/file LRUs regardless of vm.swappiness. > > This patch preserves the proportional scanning and reclaim. It does mean > that kswapd will reclaim more than requested but the number of pages will > be related to the high watermark. > > [mhocko@xxxxxxx: Correct proportional reclaim for memcg and simplify] > [kamezawa.hiroyu@xxxxxxxxxxxxxx: Recalculate scan based on target] > [hannes@xxxxxxxxxxx: Account for already scanned pages properly] > Signed-off-by: Mel Gorman <mgorman@xxxxxxx> > Acked-by: Rik van Riel <riel@xxxxxxxxxx> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> -- 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>