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SubjectRe: [PATCH 1/2] mm: page allocator: Adjust the per-cpu counter threshold when memory is low
On Mon, 29 Nov 2010, Mel Gorman wrote:

> Andrew, this patch was a performance fix but is a report saying that it
> fixes a functional regression in Fedora enough to push a patch torwards
> stable even though an explanation as to *why* it fixes the problem is missing?
>

We had to pull aa454840 "mm: page allocator: calculate a better estimate
of NR_FREE_PAGES when memory is low and kswapd is awake" from 2.6.36
internally because tests showed that it would cause the machine to stall
as the result of heavy kswapd activity. I merged it back with this fix as
it is pending in the -mm tree and it solves the issue we were seeing, so I
definitely think this should be pushed to -stable (and I would seriously
consider it for 2.6.37 inclusion even at this late date).


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