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Date: Thu, 3 Jan 2002 11:30:58 -0200 (BRST)
From: Rik van Riel <riel@conectiva.com.br>
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Harald Holzer <harald.holzer@eunet.at>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "Timothy D. Witham" <wookie@osdl.org>
Subject: Re: i686 SMP systems with more then 12 GB ram with 2.4.x kernel ?
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On Thu, 3 Jan 2002, Alan Cox wrote:

> > Which function does the reserved memory fulfill ?
> > Is it all for paging ?
>
> A lot of it is the page structs (64bytes per page - which really
> should be nearer the 32 some rival Unix OS's achieve on x86)

The 2.4 kernel has the page struct at 52 bytes in size,
William Lee Irwin and I have brought this down to 36.

Expect to see this integrated into the rmap VM soon ;)

regards,

Rik
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