On Thu, May 01, 2014 at 09:44:32AM +0100, Mel Gorman wrote: > The zlc is used on NUMA machines to quickly skip over zones that are full. > However it is always updated, even for the first zone scanned when the > zlc might not even be active. As it's a write to a bitmap that potentially > bounces cache line it's deceptively expensive and most machines will not > care. Only update the zlc if it was active. > > Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
