From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751824AbdINVPe (ORCPT ); Thu, 14 Sep 2017 17:15:34 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:54046 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751782AbdINVPd (ORCPT ); Thu, 14 Sep 2017 17:15:33 -0400 Date: Thu, 14 Sep 2017 14:15:32 -0700 From: Andrew Morton To: Vitaly Wool Cc: Linux-MM , linux-kernel@vger.kernel.org, Dan Streetman , Oleksiy.Avramchenko@sony.com Subject: Re: [PATCH] z3fold: fix stale list handling Message-Id: <20170914141532.9339436e0fb0fd85b99b8dbf@linux-foundation.org> In-Reply-To: <20170914155936.697bf347a00dacee7e7f3778@gmail.com> References: <20170914155936.697bf347a00dacee7e7f3778@gmail.com> X-Mailer: Sylpheed 3.4.1 (GTK+ 2.24.23; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 14 Sep 2017 15:59:36 +0200 Vitaly Wool wrote: > Fix the situation when clear_bit() is called for page->private before > the page pointer is actually assigned. While at it, remove work_busy() > check because it is costly and does not give 100% guarantee anyway. Does this fix https://bugzilla.kernel.org/show_bug.cgi?id=196877 ? If so, the bugzilla references and a reported-by should be added. What are the end-user visible effects of the bug? Please always include this info when fixing bugs. Should this fix be backported into -stable kernels?