Re: [PATCH] General purpose zeroed page slab
From: Adam Heath (doogie_at_debian.org)
Date: 10/15/04
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Date: Thu, 14 Oct 2004 18:36:47 -0500 (CDT) To: Andi Kleen <ak@suse.de>
On Thu, 14 Oct 2004, Andi Kleen wrote:
> Also that's pretty dumb. How about keeping track how much of the
> page got non zeroed (e.g. by using a few free words in struct page
> for a coarse grained dirty bitmap)
>
> Then you could memset on free only the parts that got actually
> changed, and never waste cache lines for anything else.
That will fail when a struct is placed in the page, and only the beginning and
end of the struct was changed.
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