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    SubjectRe: [PATCH 3/4] mm: vmscan: Evaluate the watermarks against the correct classzone
    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: Pádraig Brady<>
    > Signed-off-by: Mel Gorman<>

    Acked-by: Rik van Riel <>

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