From patchwork Fri Jan 8 19:49:45 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wilcox, Matthew R" X-Patchwork-Id: 7989661 Return-Path: X-Original-To: patchwork-linux-nvdimm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 5FECFBEEE5 for ; Fri, 8 Jan 2016 19:50:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1E8BE201F2 for ; Fri, 8 Jan 2016 19:49:59 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 22869201EC for ; Fri, 8 Jan 2016 19:49:58 +0000 (UTC) Received: from ml01.vlan14.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 317F91A1F8F; Fri, 8 Jan 2016 11:49:57 -0800 (PST) X-Original-To: linux-nvdimm@lists.01.org Delivered-To: linux-nvdimm@lists.01.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by ml01.01.org (Postfix) with ESMTP id B22091A1F83 for ; Fri, 8 Jan 2016 11:49:56 -0800 (PST) Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga101.jf.intel.com with ESMTP; 08 Jan 2016 11:49:56 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,540,1444719600"; d="scan'208";a="26087126" Received: from unknown (HELO thog.int.wil.cx) ([10.254.79.238]) by fmsmga004.fm.intel.com with SMTP; 08 Jan 2016 11:49:54 -0800 Received: by thog.int.wil.cx (Postfix, from userid 1000) id 4DDF05F82F; Fri, 8 Jan 2016 14:49:54 -0500 (EST) From: Matthew Wilcox To: Andrew Morton Subject: [PATCH v3 1/8] mm: Convert an open-coded VM_BUG_ON_VMA Date: Fri, 8 Jan 2016 14:49:45 -0500 Message-Id: <1452282592-27290-2-git-send-email-matthew.r.wilcox@intel.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1452282592-27290-1-git-send-email-matthew.r.wilcox@intel.com> References: <1452282592-27290-1-git-send-email-matthew.r.wilcox@intel.com> Cc: linux-nvdimm@lists.01.org, x86@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org X-BeenThere: linux-nvdimm@lists.01.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "Linux-nvdimm developer list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Matthew Wilcox Spotted during PUD support review. Reported-by: Kirill A. Shutemov Signed-off-by: Matthew Wilcox --- mm/memory.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/mm/memory.c b/mm/memory.c index f559e70..4150112 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1185,15 +1185,7 @@ static inline unsigned long zap_pmd_range(struct mmu_gather *tlb, next = pmd_addr_end(addr, end); if (pmd_trans_huge(*pmd) || pmd_devmap(*pmd)) { if (next - addr != HPAGE_PMD_SIZE) { -#ifdef CONFIG_DEBUG_VM - if (!rwsem_is_locked(&tlb->mm->mmap_sem)) { - pr_err("%s: mmap_sem is unlocked! addr=0x%lx end=0x%lx vma->vm_start=0x%lx vma->vm_end=0x%lx\n", - __func__, addr, end, - vma->vm_start, - vma->vm_end); - BUG(); - } -#endif + VM_BUG_ON_VMA(!rwsem_is_locked(&tlb->mm->mmap_sem), vma); split_huge_pmd(vma, pmd, addr); } else if (zap_huge_pmd(tlb, vma, pmd, addr)) goto next;