Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752470AbZIYLqx (ORCPT ); Fri, 25 Sep 2009 07:46:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752237AbZIYLqw (ORCPT ); Fri, 25 Sep 2009 07:46:52 -0400 Received: from mail.crca.org.au ([67.207.131.56]:56021 "EHLO crca.org.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751069AbZIYLqv (ORCPT ); Fri, 25 Sep 2009 07:46:51 -0400 X-Bogosity: Ham, spamicity=0.000000 Message-ID: <4ABCADCB.1080801@crca.org.au> Date: Fri, 25 Sep 2009 21:47:23 +1000 From: Nigel Cunningham User-Agent: Thunderbird 2.0.0.21 (X11/20090409) MIME-Version: 1.0 To: Hugh Dickins CC: linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: No more bits in vm_area_struct's vm_flags. References: <4AB9A0D6.1090004@crca.org.au> <4ABC7FBC.4050409@crca.org.au> In-Reply-To: X-Enigmail-Version: 0.95.7 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1323 Lines: 35 Hi. Hugh Dickins wrote: > On Fri, 25 Sep 2009, Nigel Cunningham wrote: >> Hugh Dickins wrote: >>> Does TuxOnIce rely on CONFIG_MMU? If so, then the TuxOnIce patch >>> could presumably reuse VM_MAPPED_COPY for now - but don't be >>> surprised if that's one we clean away later on. >> Hmm. I'm not sure. The requirements are the same as for swsusp and >> uswsusp. Is there some tool to graph config dependencies? > > If its requirements are the same as theirs, then I think yes, > TuxOnIce relies on config MMU: because config HIBERNATION depends > on SWAP (kernel/power/Kconfig) and config SWAP depends on MMU > (init/Kconfig). > > But I hesitated to assume that, because in the TuxOnIce patch I have > here for reference (e.g. when deciding it'll cause you unwelcome hassle > if I move swap_info_struct from swap.h to swapfile.c!), it looked as if > you support saving to an ordinary file, not just to a swap file? Yes, that's right. >> Is there some tool to graph config dependencies? > > I don't know it, but would be nice, and maybe it does exist. Okee doke. Nigel -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/