Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752659AbZJEOD6 (ORCPT ); Mon, 5 Oct 2009 10:03:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751064AbZJEOD5 (ORCPT ); Mon, 5 Oct 2009 10:03:57 -0400 Received: from mail-pz0-f188.google.com ([209.85.222.188]:63629 "EHLO mail-pz0-f188.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750737AbZJEOD4 (ORCPT ); Mon, 5 Oct 2009 10:03:56 -0400 Message-ID: <4AC9FCA6.8060203@anirban.org> Date: Mon, 05 Oct 2009 07:03:18 -0700 From: Anirban Sinha User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.4pre) Gecko/20090915 Thunderbird/3.0b4 MIME-Version: 1.0 To: Thomas Gleixner CC: Peter Zijlstra , Ingo Molnar , linux-kernel@vger.kernel.org, Darren Hart , Kaz Kylheku , Anirban Sinha Subject: Re: futex question References: <20091001092218.GH15345@elte.hu> <4AC68F13.8050601@us.ibm.com> <4AC8CF32.8060108@anirban.org> <1254738974.26976.24.camel@twins> <1254741372.26976.35.camel@twins> <4AC9F06B.8020708@anirban.org> In-Reply-To: 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: 1112 Lines: 29 Once upon a time, like on 09-10-05 6:28 AM, Thomas Gleixner wrote: > Can you please fix your mail client to do proper line breaks at around > 78 chars ? Hmm. I made that change deliberately according to instructions in Documentation/email-clients.txt so that it does not break my patches :) Anyway, back to previous setting. >> >> We need to clear those pointers regardless. After the exceve(), the >> address values are meaningless under the new mm context. > > That's out of question. We just need to come to a decision whether we > silently clean up callers dumbness or not. Correct me if I am wrong, but according to Ingo: > So i think exec() should release all existing state, unless told > otherwise. Making it behave differently for robust futexes sounds > assymetric to me. I thought clearing the head pointers was a part of the stale existing state? -- 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/