From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f179.google.com (mail-pd0-f179.google.com [209.85.192.179]) by kanga.kvack.org (Postfix) with ESMTP id 03B5B6B0038 for ; Thu, 19 Mar 2015 14:29:56 -0400 (EDT) Received: by pdnc3 with SMTP id c3so83681938pdn.0 for ; Thu, 19 Mar 2015 11:29:55 -0700 (PDT) Received: from mga02.intel.com (mga02.intel.com. [134.134.136.20]) by mx.google.com with ESMTP id kk7si4379727pab.156.2015.03.19.11.29.54 for ; Thu, 19 Mar 2015 11:29:55 -0700 (PDT) Message-ID: <550B15A0.9090308@intel.com> Date: Thu, 19 Mar 2015 11:29:52 -0700 From: Dave Hansen MIME-Version: 1.0 Subject: Re: [PATCH 05/16] page-flags: define behavior of FS/IO-related flags on compound pages References: <1426784902-125149-1-git-send-email-kirill.shutemov@linux.intel.com> <1426784902-125149-6-git-send-email-kirill.shutemov@linux.intel.com> In-Reply-To: <1426784902-125149-6-git-send-email-kirill.shutemov@linux.intel.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: "Kirill A. Shutemov" , Andrew Morton , Andrea Arcangeli , Hugh Dickins Cc: Mel Gorman , Rik van Riel , Vlastimil Babka , Christoph Lameter , Naoya Horiguchi , Steve Capper , "Aneesh Kumar K.V" , Johannes Weiner , Michal Hocko , Jerome Marchand , linux-kernel@vger.kernel.org, linux-mm@kvack.org On 03/19/2015 10:08 AM, Kirill A. Shutemov wrote: > The odd expection is PG_dirty: sound uses compound pages and maps them > with PTEs. NO_COMPOUND triggers VM_BUG_ON() in set_page_dirty() on > handling shared fault. Let's use HEAD for PG_dirty. Can we get the sound guys to look at this, btw? It seems like an odd thing that we probably don't want to keep around, right? -- 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