Re: NUMA policy issues with ZONE_MOVABLE

Christoph Lameter
2007-07-26T04:53:32Z

On Thu, 26 Jul 2007, KAMEZAWA Hiroyuki wrote:

> Hmm, How about following patch ? (not tested, just an idea).
> I'm sorry if I misunderstand concept ot policy_zone.

Maybe we should get rid of policy zone completely? There are only a few
lower zones on a NUMA machine anyways and if the filtering in
__alloc_pages does the trick then we could simply generate lists will
all zones in build_bindzonelist.

The main dividing line may be if zones are available on all (memory)
nodes. If they are only available on a single nodes (like DMA or DMA32)
then policies must be disregarded if the alloc would otherwise not be
possible.