From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261769AbULJRoE (ORCPT ); Fri, 10 Dec 2004 12:44:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261772AbULJRoE (ORCPT ); Fri, 10 Dec 2004 12:44:04 -0500 Received: from holomorphy.com ([207.189.100.168]:32402 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S261769AbULJRn7 (ORCPT ); Fri, 10 Dec 2004 12:43:59 -0500 Date: Fri, 10 Dec 2004 09:43:36 -0800 From: William Lee Irwin III To: Andrea Arcangeli Cc: Thomas Gleixner , Andrew Morton , marcelo.tosatti@cyclades.com, LKML , nickpiggin@yahoo.com.au Subject: Re: [PATCH] oom killer (Core) Message-ID: <20041210174336.GP2714@holomorphy.com> References: <1101985759.13353.102.camel@tglx.tec.linutronix.de> <1101995280.13353.124.camel@tglx.tec.linutronix.de> <20041202164725.GB32635@dualathlon.random> <20041202085518.58e0e8eb.akpm@osdl.org> <20041202180823.GD32635@dualathlon.random> <1102013716.13353.226.camel@tglx.tec.linutronix.de> <20041202233459.GF32635@dualathlon.random> <20041203022854.GL32635@dualathlon.random> <20041210163614.GN2714@holomorphy.com> <20041210173554.GW16322@dualathlon.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20041210173554.GW16322@dualathlon.random> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.6+20040722i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Dec 10, 2004 at 08:36:14AM -0800, William Lee Irwin III wrote: >> Maybe the mm == &init_mm case should return an ERR_PTR also, as that is >> a sign of a transient error, not cause for a hard panic. On Fri, Dec 10, 2004 at 06:35:54PM +0100, Andrea Arcangeli wrote: > It can't be a transient error as far as I can tell, it's just like the > issue of alloc_pages returning NULL (and potentially scheduling first) > before mounting the root fs. Well, the only way I see this happening is the process exiting followed by use_mm() on init_mm for unobvious reasons (perhaps reasons not in the tree). -- wli