Re: [PATCH 1/3] mm: vmscan: Remove lumpy reclaim

From: KOSAKI Motohiro
Date: Wed Apr 11 2012 - 14:54:24 EST


On Wed, Apr 11, 2012 at 1:25 PM, Rik van Riel <riel@xxxxxxxxxx> wrote:
> On 04/11/2012 12:38 PM, Mel Gorman wrote:
>>
>> Lumpy reclaim had a purpose but in the mind of some, it was to kick
>> the system so hard it trashed. For others the purpose was to complicate
>> vmscan.c. Over time it was giving softer shoes and a nicer attitude but
>> memory compaction needs to step up and replace it so this patch sends
>> lumpy reclaim to the farm.
>>
>> The tracepoint format changes for isolating LRU pages with this patch
>> applied. Furthermore reclaim/compaction can no longer queue dirty pages in
>> pageout() if the underlying BDI is congested. Lumpy reclaim used this
>> logic
>> and reclaim/compaction was using it in error.
>>
>> Signed-off-by: Mel Gorman<mgorman@xxxxxxx>
>
> Acked-by: Rik van Riel <riel@xxxxxxxxxx>

Acked-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
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