Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751559AbWEEObx (ORCPT ); Fri, 5 May 2006 10:31:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751558AbWEEObx (ORCPT ); Fri, 5 May 2006 10:31:53 -0400 Received: from ns2.suse.de ([195.135.220.15]:28895 "EHLO mx2.suse.de") by vger.kernel.org with ESMTP id S1750821AbWEEObw (ORCPT ); Fri, 5 May 2006 10:31:52 -0400 To: "Serge E. Hallyn" Cc: "Eric W. Biederman" , herbert@13thfloor.at, dev@sw.ru, linux-kernel@vger.kernel.org, sam@vilain.net, xemul@sw.ru, haveblue@us.ibm.com, clg@fr.ibm.com, frankeh@us.ibm.com Subject: Re: [PATCH 7/7] uts namespaces: Implement CLONE_NEWUTS flag References: <20060501203906.XF1836@sergelap.austin.ibm.com> <200605021930.45068.ak@suse.de> <20060503161143.GA18576@sergelap.austin.ibm.com> <200605051302.43019.ak@suse.de> <20060505114338.GA12850@sergelap.austin.ibm.com> From: Andi Kleen Date: 05 May 2006 16:31:49 +0200 In-Reply-To: <20060505114338.GA12850@sergelap.austin.ibm.com> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 575 Lines: 10 "Serge E. Hallyn" writes: > > Ok. Then I maintain that the bitmap of changed namespaces seems > unnecessary. I didn't spell it out, but it's obviously to optimize cache footprint of clone(). I expect nsproxy to be eventually more than a cacheline and with a bitmap test you can avoid checking it all. -Andi - 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/