Re: [PATCH 8/8] mm: vmscan: Do not writeback filesystem pages from kswapd

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On Thu, 2011-07-21 at 17:28 +0100, Mel Gorman wrote:
> Assuming that flusher threads will always write back dirty pages promptly
> then it is always faster for reclaimers to wait for flushers. This patch
> prevents kswapd writing back any filesystem pages. 

That is a somewhat sort changelog for such a big assumption ;-)

I think it can use a few extra words to explain the need to clean pages
from @zone vs writeback picks whatever fits best on disk and how that
works out wrt the assumption.

What requirements does this place on writeback and how does it meet
them.

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