On Tue, 9 Mar 2010, Mel Gorman wrote: > Until it's timeout at least. It's still better than the current > situation of sleeping on congestion. Congestion may clear if memory becomes available in other zones. > The ideal would be waiting on a per-node basis. I'm just not liking having > to look up the node structure when freeing a patch of pages and making a > cache line in there unnecessarily hot. The node structure (pgdat) contains the zone structures. If you know the type of zone then you can calculate the pgdat address. > > But then an overallocated node may stall processes. If that node is full > > of unreclaimable memory then the process may never wake up? > Processes wake after a timeout. Ok that limits it but still we may be waiting for no reason. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>