[PATCH] powerpc: Set a smaller value for RECLAIM_DISTANCE to enable zone reclaim

[Christoph Lameter]

On Mon, 1 Mar 2010, Mel Gorman wrote:

> Christoph, how feasible would it be to allow parallel reclaimers in
> __zone_reclaim() that back off at a rate depending on the number of
> reclaimers?

Not too hard. Zone locking is there but there may be a lot of bouncing
cachelines if you run it concurrently.