Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759608Ab2EVPnS (ORCPT ); Tue, 22 May 2012 11:43:18 -0400 Received: from mail-wg0-f44.google.com ([74.125.82.44]:51583 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757122Ab2EVPnR (ORCPT ); Tue, 22 May 2012 11:43:17 -0400 MIME-Version: 1.0 In-Reply-To: <20120522115910.GA3353@suse.de> References: <20120517213120.GA12329@redhat.com> <20120518185851.GA5728@redhat.com> <20120521154709.GA8697@redhat.com> <20120521200118.GA12123@redhat.com> <20120522115910.GA3353@suse.de> From: Linus Torvalds Date: Tue, 22 May 2012 08:42:55 -0700 X-Google-Sender-Auth: byICSNg2DXhTbu-xEPfABGRp3Ac Message-ID: Subject: Re: 3.4-rc7 numa_policy slab poison. To: Mel Gorman Cc: Dave Jones , Linux Kernel , linux-mm@kvack.org, KOSAKI Motohiro , Stephen Wilson , Christoph Lameter , Andrew Morton Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 755 Lines: 19 On Tue, May 22, 2012 at 4:59 AM, Mel Gorman wrote: > > This bug is really old as it triggers as far back as 2.6.32.58. I don't > know why yet. Would somebody humor me, and try it without the MPOL_F_SHARED games? The whole reference counting in the presense of setting and clearing that bit looks totally crazy. I really cannot see how it could ever work. I realize that it avoids a copy, but I really don't see how the refcounting is supposed to work for it.. Linus -- 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/