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Re: PAGE_SIZE Availability Inconsistency

From: "H. Peter Anvin" <hpa at zytor dot com>
To: Christoph Hellwig <hch at infradead dot org>, Arjan van de Ven <arjan at infradead dot org>, Roman Zippel <zippel at linux-m68k dot org>, David Brown <dmlb2000 at gmail dot com>, Linux Kernel Mailing List <linux-kernel at vger dot kernel dot org>, gdb at sourceware dot org
Date: Thu, 08 Mar 2007 09:05:48 -0800
Subject: Re: PAGE_SIZE Availability Inconsistency
References: <9c21eeae0703051555x1884fd7cse7968a71ec04eb27@mail.gmail.com> <20070306092917.GA5226@infradead.org> <200703080318.04631.zippel@linux-m68k.org> <20070308090031.GB7373@infradead.org> <1173369229.3550.2.camel@laptopd505.fenrus.org> <20070308160852.GB9916@infradead.org>

Christoph Hellwig wrote:

No, no no.  We should never export PAGE_SIZE.  We might export NBPG
as deprecated symbol for gdb if it really needs it, but that should
happen only on a.out systems, and it it should be a true constant,
not depending on PAGE_SIZE.

I've Cc'ed the gdb list on whether they have any comments on this
issue.

By the way, it's a massive snafu that the swap area magic number is dependent on PAGE_SIZE. There is absolutely no good reason for that.

-hp

Follow-Ups:
- Re: PAGE_SIZE Availability Inconsistency
  - From: Christoph Hellwig
- Re: PAGE_SIZE Availability Inconsistency
  - From: Anton Blanchard

References:
- Re: PAGE_SIZE Availability Inconsistency
  - From: Christoph Hellwig

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