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Date: Wed, 27 Jun 2001 23:32:14 +0200
From: Roman Zippel <zippel@linux-m68k.org>
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To: Martin Wilck <Martin.Wilck@fujitsu-siemens.com>
CC: Jonathan Lundell <jlundell@pobox.com>,
        Mike Galbraith <mikeg@wen-online.de>,
        Linux Kernel mailing list <linux-kernel@vger.kernel.org>,
        Paul.Russell@rustcorp.com.au
Subject: Re: [PATCH] proc_file_read() (Was: Re: proc_file_read() question)
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Hi,

Martin Wilck wrote:

> Hum - is there no simple way to determine whether a pointer is
> a valid pointer to something returned by __get_free_pages ()? You are
> right, S390 in particular seems to allow arbitrary addresses starting from
> 0.

M68k does so too, although the first page is never used and usually
unmapped to catch NULL pointers.

bye, Roman