From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 977D1C41621 for ; Tue, 24 Mar 2020 15:37:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 716E42145D for ; Tue, 24 Mar 2020 15:37:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585064242; bh=kCyXQDXBIacIOUUlvhRJP7/5AucaMFFeuDD1X4ZYGzU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Q4aeVbuIictN4fVRQ89A0pb7Grd5bEoJZFgbbAprtv2e44nFerdN0JHXlu/Po3VBQ DqkTIEbXDkPkzwZBbQmigDr5jhOVrwrZXBgVYAp1tA5ccmSb/MOOTkqrmofVxvY5Sq 25PVquHbCs3jJnNrp7WeorRHrgkbCCt5sbdZI/oo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728559AbgCXPhV (ORCPT ); Tue, 24 Mar 2020 11:37:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:59912 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728461AbgCXPhL (ORCPT ); Tue, 24 Mar 2020 11:37:11 -0400 Received: from localhost.localdomain (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id ABAE920788; Tue, 24 Mar 2020 15:37:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585064230; bh=kCyXQDXBIacIOUUlvhRJP7/5AucaMFFeuDD1X4ZYGzU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GrgxtSjO4ZBVgDGYO3uktGvMiyQriu3pRSakNzRBQWUfKNtpnF7oU0G8scgd12GVg A3FpQschv588Hn7cxGwCHRRLAkzViGpNxQzO0scK0UflIVu19AJaokpPr3RpHjk5aH ArP86APbCECHDZzC7+xj2K9YPxpHKirHDN8CeVkc= From: Will Deacon To: linux-kernel@vger.kernel.org Cc: Will Deacon , Eric Dumazet , Jann Horn , Kees Cook , Maddie Stone , Marco Elver , "Paul E . McKenney" , Peter Zijlstra , Thomas Gleixner , kernel-team@android.com, kernel-hardening@lists.openwall.com Subject: [RFC PATCH 08/21] Revert "list: Use WRITE_ONCE() when initializing list_head structures" Date: Tue, 24 Mar 2020 15:36:30 +0000 Message-Id: <20200324153643.15527-9-will@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200324153643.15527-1-will@kernel.org> References: <20200324153643.15527-1-will@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This reverts commit 2f073848c3cc8aff2655ab7c46d8c0de90cf4e50. There is no need to use WRITE_ONCE() to initialise a non-RCU 'list_head'. Cc: Paul E. McKenney Cc: Peter Zijlstra Signed-off-by: Will Deacon --- include/linux/list.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/list.h b/include/linux/list.h index c7331c259792..b86a3f9465d4 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -32,7 +32,7 @@ */ static inline void INIT_LIST_HEAD(struct list_head *list) { - WRITE_ONCE(list->next, list); + list->next = list; list->prev = list; } -- 2.20.1