Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752280AbdHIVr5 (ORCPT ); Wed, 9 Aug 2017 17:47:57 -0400 Received: from mga14.intel.com ([192.55.52.115]:26370 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752248AbdHIVry (ORCPT ); Wed, 9 Aug 2017 17:47:54 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.41,349,1498546800"; d="gz'50?scan'50,208,50";a="298136259" Date: Thu, 10 Aug 2017 05:47:40 +0800 From: kbuild test robot To: Peter Zijlstra Cc: kbuild-all@01.org, linux-kernel@vger.kernel.org, "Paul E. McKenney" , Laurent Dufour Subject: [rcu:mmap_sem.2017.08.09a 6/16] mm/internal.h:59:26: error: 'struct vm_fault' has no member named 'sequence' Message-ID: <201708100538.jnTepUPA%fengguang.wu@intel.com> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="UugvWAfsgieZRqgk" Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: fengguang.wu@intel.com X-SA-Exim-Scanned: No (on bee); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 11144 Lines: 188 --UugvWAfsgieZRqgk Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git mmap_sem.2017.08.09a head: 39782fbd9252a3ace9b49a55f4dd2a41a6ced31f commit: 1b801585f6b03276db9722dc725a50ca11439467 [6/16] mm: RCU free VMAs config: i386-tinyconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: git checkout 1b801585f6b03276db9722dc725a50ca11439467 # save the attached .config to linux build tree make ARCH=i386 Note: the rcu/mmap_sem.2017.08.09a HEAD 39782fbd9252a3ace9b49a55f4dd2a41a6ced31f builds fine. It only hurts bisectibility. All errors (new ones prefixed by >>): In file included from mm/filemap.c:39:0: mm/internal.h: In function 'vma_has_changed': >> mm/internal.h:59:26: error: 'struct vm_fault' has no member named 'sequence' return ret || seq != vmf->sequence; ^~ -- In file included from lib/vsprintf.c:40:0: lib/../mm/internal.h: In function 'vma_has_changed': >> lib/../mm/internal.h:59:26: error: 'struct vm_fault' has no member named 'sequence' return ret || seq != vmf->sequence; ^~ vim +59 mm/internal.h 44 45 extern struct vm_area_struct *find_vma_srcu(struct mm_struct *mm, 46 unsigned long addr); 47 48 static inline bool vma_has_changed(struct vm_fault *vmf) 49 { 50 int ret = RB_EMPTY_NODE(&vmf->vma->vm_rb); 51 unsigned seq = ACCESS_ONCE(vmf->vma->vm_sequence.sequence); 52 53 /* 54 * Matches both the wmb in write_seqlock_{begin,end}() and 55 * the wmb in vma_rb_erase(). 56 */ 57 smp_rmb(); 58 > 59 return ret || seq != vmf->sequence; 60 } 61 --- 0-DAY kernel test infrastructure Open Source Technology 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