Re: [PATCH 3/4] mm: vmscan: Evaluate the watermarks against the correctclasszone

[Rik van Riel]

On 06/24/2011 10:44 AM, Mel Gorman wrote:
> When deciding if kswapd is sleeping prematurely, the classzone is
> taken into account but this is different to what balance_pgdat() and
> the allocator are doing. Specifically, the DMA zone will be checked
> based on the classzone used when waking kswapd which could be for a
> GFP_KERNEL or GFP_HIGHMEM request. The lowmem reserve limit kicks in,
> the watermark is not met and kswapd thinks its sleeping prematurely
> keeping kswapd awake in error.
>
> Reported-and-tested-by: PÃdraig Brady<P@xxxxxxxxxxxxxx>
> Signed-off-by: Mel Gorman<mgorman@xxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

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