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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, 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 924CBC43387 for ; Fri, 28 Dec 2018 02:39:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 64BF62087F for ; Fri, 28 Dec 2018 02:39:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728054AbeL1Cjf (ORCPT ); Thu, 27 Dec 2018 21:39:35 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:16662 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727544AbeL1Cje (ORCPT ); Thu, 27 Dec 2018 21:39:34 -0500 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id B5612ABB0359A; Fri, 28 Dec 2018 10:39:31 +0800 (CST) Received: from localhost.localdomain.localdomain (10.175.113.25) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.408.0; Fri, 28 Dec 2018 10:39:24 +0800 From: YueHaibing To: Kees Cook , Andy Lutomirski , Will Drewry , Marcos Paulo de Souza , David Windsor , "Roman Gushchin" , Andrew Morton , "Michal Hocko" , "Eric W. Biederman" , "Rik van Riel" CC: YueHaibing , , Subject: [PATCH -next] mm: Mark 'stack_vm_area' with __maybe_unused Date: Fri, 28 Dec 2018 02:46:30 +0000 Message-ID: <1545965190-2381-1-git-send-email-yuehaibing@huawei.com> X-Mailer: git-send-email 1.8.3.1 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Fixes gcc '-Wunused-but-set-variable' warning when CONFIG_VMAP_STACK is not set: kernel/fork.c: In function 'dup_task_struct': kernel/fork.c:843:20: warning: variable 'stack_vm_area' set but not used [-Wunused-but-set-variable] Signed-off-by: YueHaibing --- kernel/fork.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/fork.c b/kernel/fork.c index e2a5156..b38c392 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -840,7 +840,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig, int node) { struct task_struct *tsk; unsigned long *stack; - struct vm_struct *stack_vm_area; + struct vm_struct *stack_vm_area __maybe_unused; int err; if (node == NUMA_NO_NODE)