Return-Path: <stable-owner@vger.kernel.org>
Received: from imap1.codethink.co.uk ([176.9.8.82]:44711 "EHLO
        imap1.codethink.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1750759AbeEPOm2 (ORCPT
        <rfc822;stable@vger.kernel.org>); Wed, 16 May 2018 10:42:28 -0400
Message-ID: <1526481745.9159.128.camel@codethink.co.uk>
Subject: Re: [PATCH 4.4 164/190] futex: Remove requirement for lock_page()
 in get_futex_key()
From: Ben Hutchings <ben.hutchings@codethink.co.uk>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org, Mel Gorman <mgorman@suse.de>,
        Davidlohr Bueso <dbueso@suse.de>,
        Thomas Gleixner <tglx@linutronix.de>, Chris Mason <clm@fb.com>,
        Darren Hart <dvhart@linux.intel.com>,
        Hugh Dickins <hughd@google.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Mel Gorman <mgorman@techsingularity.net>,
        Peter Zijlstra <peterz@infradead.org>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        dave@stgolabs.net, Ingo Molnar <mingo@kernel.org>,
        Chenbo Feng <fengc@google.com>
Date: Wed, 16 May 2018 15:42:25 +0100
In-Reply-To: <1526481515.9159.127.camel@codethink.co.uk>
References: <20180411183550.114495991@linuxfoundation.org>
         <20180411183602.117363832@linuxfoundation.org>
         <1526481515.9159.127.camel@codethink.co.uk>
Content-Type: text/plain; charset="UTF-8"
Mime-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: stable-owner@vger.kernel.org
List-ID: <stable.vger.kernel.org>

On Wed, 2018-05-16 at 15:38 +0100, Ben Hutchings wrote:
> On Wed, 2018-04-11 at 20:36 +0200, Greg Kroah-Hartman wrote:
> > 4.4-stable review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > 
> > From: Mel Gorman <mgorman@suse.de>
> > 
> > commit 65d8fc777f6dcfee12785c057a6b57f679641c90 upstream.
> 
> [...]
> 
> This causes regressions, fixed upstream by:
> 
> commit 077fa7aed17de5022e44bf07dbaf732078b7b5b2
> Author: Mel Gorman <mgorman@suse.de>
> Date:   Wed Jun 8 14:25:22 2016 +0100
> 
>     futex: Calculate the futex key based on a tail page for file-based futexes

Actually I think this backport to 4.4 incorporated the fix above, but
the one below still looks applicable.

Ben.

> commit 48fb6f4db940e92cfb16cd878cddd59ea6120d06
> Author: Mel Gorman <mgorman@suse.de>
> Date:   Wed Aug 9 08:27:11 2017 +0100
> 
>     futex: Remove unnecessary warning from get_futex_key
> 
> Ben.
> 
-- 
Ben Hutchings
Software Developer, Codethink Ltd.