Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758605AbYH0Q5X (ORCPT ); Wed, 27 Aug 2008 12:57:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755247AbYH0Q5M (ORCPT ); Wed, 27 Aug 2008 12:57:12 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:35591 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752659AbYH0Q5L (ORCPT ); Wed, 27 Aug 2008 12:57:11 -0400 Date: Wed, 27 Aug 2008 17:39:50 +0100 From: Alan Cox To: David Howells Cc: dhowells@redhat.com, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org Subject: Re: [PATCH 00/59] Introduce credentials Message-ID: <20080827173950.02afc804@lxorguk.ukuu.org.uk> In-Reply-To: <21723.1219847044@redhat.com> References: <20080827143355.5b8bfcf1@lxorguk.ukuu.org.uk> <20080827134541.19980.61042.stgit@warthog.procyon.org.uk> <21723.1219847044@redhat.com> X-Mailer: Claws Mail 3.5.0 (GTK+ 2.12.11; x86_64-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 771 Lines: 21 > We get a number of things: > > (1) Multiple credential changes all happen simultaneously (setresuid() for > example). The new set of credentials is committed with a single RCU > assignment. Makes sense - except for the question of bounding memory utilisation. > > I've never seen credentials of any kind showing in profiles so why do we > > need this ? > > I'm not sure what you mean by that. Are you talking abo Sorry I was assuming this was performance driven in fact the reasons are totally different. -- 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/