Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752736AbbLJOT3 (ORCPT ); Thu, 10 Dec 2015 09:19:29 -0500 Received: from m50-134.163.com ([123.125.50.134]:48046 "EHLO m50-134.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752324AbbLJOT0 (ORCPT ); Thu, 10 Dec 2015 09:19:26 -0500 From: Geliang Tang To: Josh Poimboeuf , Seth Jennings , Jiri Kosina , Vojtech Pavlik Cc: Geliang Tang , Pablo Neira Ayuso , Patrick McHardy , Jozsef Kadlecsik , "David S. Miller" , Jens Axboe , "Paul E. McKenney" , Jan Kara , Josef Bacik , Josh Triplett , live-patching@vger.kernel.org, netfilter-devel@vger.kernel.org, coreteam@netfilter.org, netdev@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/4] livepatch: use list_is_first() Date: Thu, 10 Dec 2015 22:17:16 +0800 Message-Id: <394e9e5ece944969fe1ff4f37c9a73bf5543265e.1449755818.git.geliangtang@163.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <305feb971ae11e192f35f25d66bb7b2e28e06c39.1449755818.git.geliangtang@163.com> References: <305feb971ae11e192f35f25d66bb7b2e28e06c39.1449755818.git.geliangtang@163.com> In-Reply-To: <305feb971ae11e192f35f25d66bb7b2e28e06c39.1449755818.git.geliangtang@163.com> References: <305feb971ae11e192f35f25d66bb7b2e28e06c39.1449755818.git.geliangtang@163.com> X-CM-TRANSID: DtGowEB5Zm92iWlWRbc_AA--.18S3 X-Coremail-Antispam: 1Uf129KBjvdXoWrtw45JFW3Gr13JrWkCrWkXrb_yoW3JFc_GF yUWrZ2kr10qan7A3Z5Kan2gr13Kry8ZanYvw4Sq3y5JFy5tr1Yq3y5J3ZxGr95WrZ2vF98 AF4kZrsrua12yjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IUjPxhtUUUUU== X-Originating-IP: [116.77.128.176] X-CM-SenderInfo: 5jhoxtpqjwt0rj6rljoofrz/xtbByhfMmVO+gc9-WgAAsO Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 952 Lines: 29 For better readability, use list_is_first() instead of open-coded. Signed-off-by: Geliang Tang --- kernel/livepatch/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c index bc2c85c..be64106 100644 --- a/kernel/livepatch/core.c +++ b/kernel/livepatch/core.c @@ -479,7 +479,7 @@ static int __klp_enable_patch(struct klp_patch *patch) return -EINVAL; /* enforce stacking: only the first disabled patch can be enabled */ - if (patch->list.prev != &klp_patches && + if (!list_is_first(&patch->list, &klp_patches) && list_prev_entry(patch, list)->state == KLP_DISABLED) return -EBUSY; -- 2.5.0 -- 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/