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From: Roman Zippel <zippel@linux-m68k.org>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: Christoph Hellwig <hch@infradead.org>,
	Rik van Riel <riel@conectiva.com.br>,
	Samuel Ortiz <sortiz@dbear.engr.sgi.com>,
	linux-mm@kvack.org
Subject: Re: [PATCH] rmap 13a
Date: Thu, 09 May 2002 00:34:34 +0200	[thread overview]
Message-ID: <3CD9A7FA.5967F675@linux-m68k.org> (raw)
In-Reply-To: 20020508213452.GJ15756@holomorphy.com

Hi,

William Lee Irwin III wrote:

> A:
> static inline void *page_address(struct page *page)
> {
>         return __va((page - mem_map) << PAGE_SHIFT);
> }

This is very broken.

> If table lookup is wanted, I feel that should also be a generic option.
> There is nothing inherently architecture-specific about using a table-
> driven method of calculating page_address().

Archs already do the kaddr->node lookup. Archs setup the virtual mapping
and the pgdat nodes, they know best how they are layed out. Why do you
want to generalize this?

bye, Roman
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  reply	other threads:[~2002-05-08 22:34 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-05-07  2:17 [PATCH] rmap 13a Rik van Riel
2002-05-07  2:17 ` Rik van Riel
2002-05-07 17:37 ` Christoph Hellwig
2002-05-07 18:03   ` William Lee Irwin III
2002-05-08 11:06   ` Samuel Ortiz
2002-05-08 11:13     ` William Lee Irwin III
2002-05-08 13:40     ` Rik van Riel
2002-05-08 18:21   ` Roman Zippel
2002-05-08 21:34     ` William Lee Irwin III
2002-05-08 22:34       ` Roman Zippel [this message]
2002-05-08 22:42         ` William Lee Irwin III
2002-05-08 22:50           ` William Lee Irwin III
2002-05-08 23:26           ` Roman Zippel
2002-05-09  1:29             ` William Lee Irwin III
2002-05-09 12:33               ` Roman Zippel
2002-05-09 14:09                 ` William Lee Irwin III
2002-05-09 15:36                   ` Roman Zippel
2002-05-09 17:42                     ` William Lee Irwin III
2002-05-09 21:45                       ` Roman Zippel
2002-05-09 23:13                         ` William Lee Irwin III
2002-05-10 11:37                           ` Roman Zippel
2002-05-10 16:28                             ` William Lee Irwin III
2002-05-10 19:48                               ` Roman Zippel
2002-05-08 21:50     ` William Lee Irwin III

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