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From: Rik van Riel on 5 Aug 2010 11:30
On 08/05/2010 02:12 AM, KOSAKI Motohiro wrote:
> From: Wu Fengguang<fengguang.wu(a)intel.com>
>
> Fix "system goes unresponsive under memory pressure and lots of
> dirty/writeback pages" bug.
>
> http://lkml.org/lkml/2010/4/4/86
>
> In the above thread, Andreas Mohr described that
>
> Invoking any command locked up for minutes (note that I'm
> talking about attempted additional I/O to the _other_,
> _unaffected_ main system HDD - such as loading some shell
> binaries -, NOT the external SSD18M!!).
>
> This happens when the two conditions are both meet:
> - under memory pressure
> - writing heavily to a slow device

Acked-by: Rik van Riel <riel(a)redhat.com>

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From: KOSAKI Motohiro on 8 Aug 2010 02:50
> This patch (as well as most of the series) will reject against current mmotm
> because of other reclaim-related patches already in there. The resolutions
> are not too hard but bear it in mind.

I was working on latest published mmotm. but yes, current akpm private mmotm
incluse your reclaim related change.

That said, I need to rework them later.



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