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Date: Sun, 6 Jan 2002 15:44:04 +0100 (CET)
From: Dave Jones <davej@suse.de>
To: "David S. Miller" <davem@redhat.com>
Cc: <anton@samba.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Remove 8 bytes from struct page on 64bit archs
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On Sun, 6 Jan 2002, David S. Miller wrote:

>    Some of the low end single zone machines (m68k, sparc32, arm etc)
>    could benefit from losing ->virtual too.
> Sparc32 has kmapping, so it would need virtual.

I'm curious to see how large the tradeoff is with calculating
virtual in page_address(). The overhead there may be larger than
the win we get from better cacheline footprint in struct page

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs

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