On 07/14/2014 06:09 PM, David Rientjes wrote:
> + if (node == NUMA_NO_NODE) {
> + node = page_to_nid(page);
> + } else {
> + int distance = node_distance(page_to_nid(page), node);
> +
> + /*
> + * Do not migrate to memory that would not be reclaimed
> + * from.
> + */
> + if (distance > RECLAIM_DISTANCE)
> + goto out_unmap;
> + }
Isn't the reclaim behavior based on zone_reclaim_mode and not
RECLAIM_DISTANCE directly? And isn't that reclaim behavior disabled by
default?
I think you should at least be consulting zone_reclaim_mode.
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