From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx163.postini.com [74.125.245.163]) by kanga.kvack.org (Postfix) with SMTP id AAF036B00C5 for ; Wed, 22 May 2013 10:10:21 -0400 (EDT) From: "Kirill A. Shutemov" In-Reply-To: <519BD69E.5000207@sr71.net> References: <1368321816-17719-1-git-send-email-kirill.shutemov@linux.intel.com> <1368321816-17719-17-git-send-email-kirill.shutemov@linux.intel.com> <519BD69E.5000207@sr71.net> Subject: Re: [PATCHv4 16/39] thp, mm: locking tail page is a bug Content-Transfer-Encoding: 7bit Message-Id: <20130522141245.F047CE0090@blue.fi.intel.com> Date: Wed, 22 May 2013 17:12:45 +0300 (EEST) Sender: owner-linux-mm@kvack.org List-ID: To: Dave Hansen Cc: "Kirill A. Shutemov" , Andrea Arcangeli , Andrew Morton , Al Viro , Hugh Dickins , Wu Fengguang , Jan Kara , Mel Gorman , linux-mm@kvack.org, Andi Kleen , Matthew Wilcox , "Kirill A. Shutemov" , Hillf Danton , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Dave Hansen wrote: > On 05/11/2013 06:23 PM, Kirill A. Shutemov wrote: > > From: "Kirill A. Shutemov" > > > > Locking head page means locking entire compound page. > > If we try to lock tail page, something went wrong. > > Have you actually triggered this in your development? Yes, on early prototypes. -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org