linux-kernel - Re: [PATCH 4.4 164/190] futex: Remove requirement for lock_page() in get_futex

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Message-ID: <20180517090557.GG25318@kroah.com>
Date:   Thu, 17 May 2018 11:05:57 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Ben Hutchings <ben.hutchings@...ethink.co.uk>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Mel Gorman <mgorman@...e.de>, Davidlohr Bueso <dbueso@...e.de>,
        Thomas Gleixner <tglx@...utronix.de>, Chris Mason <clm@...com>,
        Darren Hart <dvhart@...ux.intel.com>,
        Hugh Dickins <hughd@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Peter Zijlstra <peterz@...radead.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        dave@...olabs.net, Ingo Molnar <mingo@...nel.org>,
        Chenbo Feng <fengc@...gle.com>
Subject: Re: [PATCH 4.4 164/190] futex: Remove requirement for lock_page() in
 get_futex_key()

On Wed, May 16, 2018 at 03:42:25PM +0100, Ben Hutchings wrote:
> 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@...e.de>
> > > 
> > > commit 65d8fc777f6dcfee12785c057a6b57f679641c90 upstream.
> > 
> > [...]
> > 
> > This causes regressions, fixed upstream by:
> > 
> > commit 077fa7aed17de5022e44bf07dbaf732078b7b5b2
> > Author: Mel Gorman <mgorman@...e.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@...e.de>
> > Date:   Wed Aug 9 08:27:11 2017 +0100
> > 
> >     futex: Remove unnecessary warning from get_futex_key

Thanks, I missed that one, now queued up.

greg k-h