Re: [patch 6/7 -mm] oom: avoid oom killer for lowmem allocations

Rik van Riel
2010-02-11T04:13:32Z

On 02/10/2010 11:32 AM, David Rientjes wrote:

> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -1914,6 +1914,9 @@ rebalance:
> * running out of options and have to consider going OOM
> */
> if (!did_some_progress) {
> + /* The oom killer won't necessarily free lowmem */
> + if (high_zoneidx< ZONE_NORMAL)
> + goto nopage;
> if ((gfp_mask& __GFP_FS)&& !(gfp_mask& __GFP_NORETRY)) {
> if (oom_killer_disabled)
> goto nopage;

Are there architectures that only have one memory zone?

s390 or one of the other virtualized-only architectures perhaps?

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