From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992452AbXCWPE3 (ORCPT ); Fri, 23 Mar 2007 11:04:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S2992454AbXCWPE3 (ORCPT ); Fri, 23 Mar 2007 11:04:29 -0400 Received: from holomorphy.com ([66.93.40.71]:53712 "EHLO holomorphy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2992452AbXCWPE2 (ORCPT ); Fri, 23 Mar 2007 11:04:28 -0400 Date: Fri, 23 Mar 2007 08:03:46 -0700 From: William Lee Irwin III To: Ken Chen Cc: Adam Litke , Andrew Morton , Arjan van de Ven , Christoph Hellwig , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [patch] rfc: introduce /dev/hugetlb Message-ID: <20070323150346.GU2986@holomorphy.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 23, 2007 at 01:44:38AM -0700, Ken Chen wrote: > I think we have enough infrastructure currently in hugetlbfs to > implement what Adam wants for something like a /dev/hugetlb char > device (except we can't afford to have a zero hugetlb page since it > will be too costly on some arch). > I really like the idea of having something similar to /dev/zero for > hugetlb page. So I coded it up on top of existing hugetlbfs. The > core change is really small and half of the patch is really just > moving things around. I think this at least can partially fulfill the > goal. > Signed-off-by: Ken Chen I like this patch a lot, though I'm not likely to get around to testing it today. If userspace testcode is available that would be great to see posted so I can just boot into things and run that. -- wli