From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id 05E036B005A for ; Fri, 25 Sep 2009 07:46:50 -0400 (EDT) Message-ID: <4ABCADCB.1080801@crca.org.au> Date: Fri, 25 Sep 2009 21:47:23 +1000 From: Nigel Cunningham MIME-Version: 1.0 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: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Hugh Dickins Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org