linux-kernel - Re: PAGE_SIZE Availability Inconsistency

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Message-Id: <1173369229.3550.2.camel@laptopd505.fenrus.org>
Date:	Thu, 08 Mar 2007 07:53:49 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Roman Zippel <zippel@...ux-m68k.org>,
	David Brown <dmlb2000@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: PAGE_SIZE Availability Inconsistency

On Thu, 2007-03-08 at 09:00 +0000, Christoph Hellwig wrote:
> On Thu, Mar 08, 2007 at 03:18:04AM +0100, Roman Zippel wrote:
> > Hi,
> > 
> > On Tuesday 06 March 2007 10:29, Christoph Hellwig wrote:
> > 
> > > PAGE_SIZE should not be available at all.  Please use getpagesize()
> > > instead.
> > 
> > While I agree, NBPG is a bit of a problem, although it's only needed for aout 
> > coredumps AFAICT, but still needed to compile e.g. gdb.
> 
> So we should export this one with an arbitrary value (on multiple page
> size architectures) and a warning, maybe even an __deprecated attached to
> it.

if we think the kernel should export this one, we could do

#ifndef __KERNEL__
#define PAGE_SIZE getpagesize()
#endif


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