Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751956AbZJWXMZ (ORCPT ); Fri, 23 Oct 2009 19:12:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751504AbZJWXMY (ORCPT ); Fri, 23 Oct 2009 19:12:24 -0400 Received: from out02.mta.xmission.com ([166.70.13.232]:50168 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751217AbZJWXMX (ORCPT ); Fri, 23 Oct 2009 19:12:23 -0400 To: Oren Laadan Cc: Sukadev Bhattiprolu , randy.dunlap@oracle.com, arnd@arndb.de, linux-api@vger.kernel.org, Containers , Nathan Lynch , linux-kernel@vger.kernel.org, Louis.Rilling@kerlabs.com, kosaki.motohiro@jp.fujitsu.com, hpa@zytor.com, mingo@elte.hu, Pavel Emelyanov , torvalds@linux-foundation.org, Alexey Dobriyan , roland@redhat.com Subject: Re: [RFC][v8][PATCH 0/10] Implement clone3() system call References: <20091020005125.GG27627@count0.beaverton.ibm.com> <20091020040315.GA26632@us.ibm.com> <20091020183329.GB22646@us.ibm.com> <20091021062021.GA2667@us.ibm.com> <20091023004253.GA7915@us.ibm.com> <20091023053001.GA24972@us.ibm.com> <4AE20124.4010108@librato.com> <4AE20532.6060809@librato.com> From: ebiederm@xmission.com (Eric W. Biederman) Date: Fri, 23 Oct 2009 16:12:19 -0700 In-Reply-To: <4AE20532.6060809@librato.com> (Oren Laadan's message of "Fri\, 23 Oct 2009 15\:34\:10 -0400") Message-ID: User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-XM-SPF: eid=;;;mid=;;;hst=in01.mta.xmission.com;;;ip=76.21.114.89;;;frm=ebiederm@xmission.com;;;spf=neutral X-SA-Exim-Connect-IP: 76.21.114.89 X-SA-Exim-Mail-From: ebiederm@xmission.com X-SA-Exim-Version: 4.2.1 (built Thu, 25 Oct 2007 00:26:12 +0000) X-SA-Exim-Scanned: No (on in01.mta.xmission.com); Unknown failure Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 606 Lines: 16 Oren Laadan writes: > I stand corrected by Suka: a pid-specific clone does not change > last_pid. Therefore, given that 'restart' only creates tasks with > pid-specific clone, this should be safe for c/r. Exactly. We can preserve the existing guarantees and keep the ability to restore any pid (at least in a fresh pid namespace). Eric -- 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/