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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 0E010C7618B for ; Wed, 24 Jul 2019 14:34:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DF6592070B for ; Wed, 24 Jul 2019 14:34:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728079AbfGXOet (ORCPT ); Wed, 24 Jul 2019 10:34:49 -0400 Received: from mga01.intel.com ([192.55.52.88]:18868 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727164AbfGXOet (ORCPT ); Wed, 24 Jul 2019 10:34:49 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Jul 2019 07:34:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,303,1559545200"; d="scan'208";a="171518552" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga007.fm.intel.com with ESMTP; 24 Jul 2019 07:34:47 -0700 Received: by black.fi.intel.com (Postfix, from userid 1000) id 39248130; Wed, 24 Jul 2019 17:34:46 +0300 (EEST) Date: Wed, 24 Jul 2019 17:34:46 +0300 From: "Kirill A. Shutemov" To: YueHaibing Cc: akpm@linux-foundation.org, mhocko@suse.com, vbabka@suse.cz, yang.shi@linux.alibaba.com, jannh@google.com, walken@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH] mm/mmap.c: silence variable 'new_start' set but not used Message-ID: <20190724143445.ezii7bwbbxxxtu2k@black.fi.intel.com> References: <20190724140739.59532-1-yuehaibing@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190724140739.59532-1-yuehaibing@huawei.com> User-Agent: NeoMutt/20170714-126-deb55f (1.8.3) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 24, 2019 at 02:07:39PM +0000, YueHaibing wrote: > 'new_start' is used in is_hugepage_only_range(), > which do nothing in some arch. gcc will warning: Make is_hugepage_only_range() reference the variable on such archs: #define is_hugepage_only_range(mm, addr, len) ((void) addr, 0) -- Kirill A. Shutemov