Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755368AbXJCNJj (ORCPT ); Wed, 3 Oct 2007 09:09:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753365AbXJCNJb (ORCPT ); Wed, 3 Oct 2007 09:09:31 -0400 Received: from yue.linux-ipv6.org ([203.178.140.15]:51822 "EHLO yue.st-paulia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753232AbXJCNJa (ORCPT ); Wed, 3 Oct 2007 09:09:30 -0400 Date: Wed, 03 Oct 2007 22:11:16 +0900 (JST) Message-Id: <20071003.221116.83306587.yoshfuji@linux-ipv6.org> To: penguin-kernel@I-love.SAKURA.ne.jp Cc: jmorris@namei.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, chrisw@sous-sol.org, yoshfuji@linux-ipv6.org Subject: Re: [TOMOYO 05/15](repost) Domain transition handler functions. From: YOSHIFUJI Hideaki / =?iso-2022-jp?B?GyRCNUhGIzFRTEAbKEI=?= In-Reply-To: <200710032204.DFF51552.OFOSOFMVQtHLJF@I-love.SAKURA.ne.jp> References: <20071003.204356.05853536.yoshfuji@linux-ipv6.org> <200710032204.DFF51552.OFOSOFMVQtHLJF@I-love.SAKURA.ne.jp> Organization: USAGI/WIDE Project X-URL: http://www.yoshifuji.org/%7Ehideaki/ X-Fingerprint: 9022 65EB 1ECF 3AD1 0BDF 80D8 4807 F894 E062 0EEA X-PGP-Key-URL: http://www.yoshifuji.org/%7Ehideaki/hideaki@yoshifuji.org.asc X-Face: "5$Al-.M>NJ%a'@hhZdQm:."qn~PA^gq4o*>iCFToq*bAi#4FRtx}enhuQKz7fNqQz\BYU] $~O_5m-9'}MIs`XGwIEscw;e5b>n"B_?j/AkL~i/MEaZBLP X-Mailer: Mew version 3.3 on Emacs 20.7 / Mule 4.1 (AOI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 708 Lines: 17 In article <200710032204.DFF51552.OFOSOFMVQtHLJF@I-love.SAKURA.ne.jp> (at Wed, 3 Oct 2007 22:04:11 +0900), Tetsuo Handa says: > Well, is there a way to avoid read_lock when reading list? > > Currently, TOMOYO Linux avoids read_lock, on the assumption that > (1) First, ptr->next is initialized with NULL. > (2) Later, ptr->next is assigned non-NULL address. > (3) Assigning to ptr->next is done atomically. RCU? --yoshfuji - 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/