Re: [PATCH 3/3] vmscan: Force kswapd to take notice faster when high-order watermarks are being hit

Rik van Riel
2009-10-27T18:20:20Z

On 10/27/2009 09:40 AM, Mel Gorman wrote:
> When a high-order allocation fails, kswapd is kicked so that it reclaims
> at a higher-order to avoid direct reclaimers stall and to help GFP_ATOMIC
> allocations. Something has changed in recent kernels that affect the timing
> where high-order GFP_ATOMIC allocations are now failing with more frequency,
> particularly under pressure. This patch forces kswapd to notice sooner that
> high-order allocations are occuring.
>
> Signed-off-by: Mel Gorman<mel@csn.ul.ie>

Reviewed-by: Rik van Riel <riel@redhat.com>

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