On Thu, Jul 21, 2011 at 05:28:47PM +0100, Mel Gorman wrote: > It is preferable that no dirty pages are dispatched for cleaning from > the page reclaim path. At normal priorities, this patch prevents kswapd > writing pages. > > However, page reclaim does have a requirement that pages be freed > in a particular zone. If it is failing to make sufficient progress > (reclaiming < SWAP_CLUSTER_MAX at any priority priority), the priority > is raised to scan more pages. A priority of DEF_PRIORITY - 3 is > considered to tbe the point where kswapd is getting into trouble > reclaiming pages. If this priority is reached, kswapd will dispatch > pages for writing. > > Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx> -- Kind regards, Minchan Kim _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
