linux-kernel - Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB, v2.

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Message-ID: <Pine.LNX.4.64.0806101128450.17349@schroedinger.engr.sgi.com>
Date:	Tue, 10 Jun 2008 11:30:19 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Vegard Nossum <vegard.nossum@...il.com>
cc:	Paul Mundt <lethal@...ux-sh.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	David Howells <dhowells@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, cooloney@...nel.org,
	mpm@...enic.com
Subject: Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB, v2.

On Tue, 10 Jun 2008, Vegard Nossum wrote:

> Are you sure it shouldn't be virt_addr_valid()? If yes, can you please
> explain the difference? Thanks :-)

from include/asm-x86/page.h

#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

#define virt_to_page(kaddr)     pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)


Yes virt_addr_valid is better to use. I was thinking too much using the 
basic ops.


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