Re: [PATCH] mm: disallow direct reclaim page writeback

From: Andi Kleen
Date: Thu Apr 15 2010 - 10:57:30 EST


Dave Chinner <david@xxxxxxxxxxxxx> writes:
>
> How about this? For now, we stop direct reclaim from doing writeback
> only on order zero allocations, but allow it for higher order
> allocations. That will prevent the majority of situations where

And also stop it always with 4K stacks.

> direct reclaim blows the stack and interferes with background
> writeout, but won't cause lumpy reclaim to change behaviour.
> This reduces the scope of impact and hence testing and validation
> the needs to be done.

-Andi
--
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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