From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751250AbcDKGFO (ORCPT ); Mon, 11 Apr 2016 02:05:14 -0400 Received: from e23smtp02.au.ibm.com ([202.81.31.144]:52937 "EHLO e23smtp02.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750718AbcDKGFN (ORCPT ); Mon, 11 Apr 2016 02:05:13 -0400 X-IBM-Helo: d23dlp03.au.ibm.com X-IBM-MailFrom: khandual@linux.vnet.ibm.com X-IBM-RcptTo: linux-kernel@vger.kernel.org Message-ID: <570B3E51.2090308@linux.vnet.ibm.com> Date: Mon, 11 Apr 2016 11:34:01 +0530 From: Anshuman Khandual User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: kbuild test robot CC: dave.hansen@intel.com, mgorman@techsingularity.net, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, kbuild-all@01.org, kirill@shutemov.name, n-horiguchi@ah.jp.nec.com, linuxppc-dev@lists.ozlabs.org, akpm@linux-foundation.org, aneesh.kumar@linux.vnet.ibm.com Subject: Re: [PATCH 03/10] mm/hugetlb: Protect follow_huge_(pud|pgd) functions from race References: <201604071708.osnfXWQP%fengguang.wu@intel.com> In-Reply-To: <201604071708.osnfXWQP%fengguang.wu@intel.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16041106-0005-0000-0000-000007523022 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 04/07/2016 03:04 PM, kbuild test robot wrote: > All errors (new ones prefixed by >>): > > mm/hugetlb.c: In function 'follow_huge_pud': >>> >> mm/hugetlb.c:4360:3: error: implicit declaration of function 'pud_page' [-Werror=implicit-function-declaration] > page = pud_page(*pud) + ((address & ~PUD_MASK) >> PAGE_SHIFT); > ^ > mm/hugetlb.c:4360:8: warning: assignment makes pointer from integer without a cast > page = pud_page(*pud) + ((address & ~PUD_MASK) >> PAGE_SHIFT); > ^ > mm/hugetlb.c: In function 'follow_huge_pgd': > mm/hugetlb.c:4395:3: error: implicit declaration of function 'pgd_page' [-Werror=implicit-function-declaration] > page = pgd_page(*pgd) + ((address & ~PGDIR_MASK) >> PAGE_SHIFT); Both the build errors here are because of the fact that pgd_page() is not available for some platforms and config options. It got missed as I ran only powerpc config options for build test purpose. My bad, will fix it.