From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932121AbaLHLzU (ORCPT ); Mon, 8 Dec 2014 06:55:20 -0500 Received: from mta-out1.inet.fi ([62.71.2.195]:55385 "EHLO kirsi1.inet.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752974AbaLHLzT (ORCPT ); Mon, 8 Dec 2014 06:55:19 -0500 Date: Mon, 8 Dec 2014 13:54:47 +0200 From: "Kirill A. Shutemov" To: "Wang, Yalin" Cc: "'Hillf Danton'" , "'linux-kernel'" , "'linux-mm@kvack.org'" , "'linux-arm-kernel@lists.infradead.org'" , "'Andrew Morton'" Subject: Re: [PATCH V3] mm:add VM_BUG_ON_PAGE() for page_mapcount() Message-ID: <20141208115447.GA29028@node.dhcp.inet.fi> References: <010b01d012ca$05244060$0f6cc120$@alibaba-inc.com> <35FD53F367049845BC99AC72306C23D103E688B313F9@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E688B313FA@CNBJMBX05.corpusers.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <35FD53F367049845BC99AC72306C23D103E688B313FA@CNBJMBX05.corpusers.net> User-Agent: Mutt/1.5.23.1 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 08, 2014 at 05:59:46PM +0800, Wang, Yalin wrote: > This patch add VM_BUG_ON_PAGE() for slab page, > because _mapcount is an union with slab struct in struct page, > avoid access _mapcount if this page is a slab page. > Also remove the unneeded bracket. > > Signed-off-by: Yalin Wang Acked-by: Kirill A. Shutemov -- Kirill A. Shutemov