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<[email protected]>
Reviewed-by: Rik van Riel <[email protected]>
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