From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267278AbUG1P44 (ORCPT ); Wed, 28 Jul 2004 11:56:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267253AbUG1Pza (ORCPT ); Wed, 28 Jul 2004 11:55:30 -0400 Received: from ebiederm.dsl.xmission.com ([166.70.28.69]:43191 "EHLO ebiederm.dsl.xmission.com") by vger.kernel.org with ESMTP id S267250AbUG1PyB (ORCPT ); Wed, 28 Jul 2004 11:54:01 -0400 To: "Martin J. Bligh" Cc: suparna@in.ibm.com, Andrew Morton , fastboot@osdl.org, linux-kernel@vger.kernel.org Subject: Re: [Fastboot] Re: Announce: dumpfs v0.01 - common RAS output API References: <16734.1090513167@ocs3.ocs.com.au> <20040725235705.57b804cc.akpm@osdl.org> <20040728105455.GA11282@in.ibm.com> <120540000.1091028208@[10.10.2.4]> From: ebiederm@xmission.com (Eric W. Biederman) Date: 28 Jul 2004 09:53:21 -0600 In-Reply-To: <120540000.1091028208@[10.10.2.4]> Message-ID: User-Agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/21.2 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org "Martin J. Bligh" writes: > /dev/mem expects mem_map to be there, the size of which would easily > blow away the reserved section. /dev/oldmem (or whatever we call it) > is just a magic copy that does a kmap-like operation to get at pages > without a struct page. Don't we already do that for the mmap case so we can access I/O devices? But I agree if there is a dependence there having a /dev/rawmem thing that does not need a page struct would make sense. I just don't think we actually need it... Eric