linux-kernel - Re: Q. drm/i915 shrinker, synchronize_rcu

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Date:   Tue, 30 May 2017 13:00:09 -0700 (PDT)
From:   Hugh Dickins <hughd@...gle.com>
To:     Jani Nikula <jani.nikula@...el.com>
cc:     Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        "J. R. Okajima" <hooanon05g@...il.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        chris@...is-wilson.co.uk, daniel.vetter@...ll.ch,
        linux-kernel@...r.kernel.org
Subject: Re: Q. drm/i915 shrinker, synchronize_rcu_expedited() from
 handlers

On Mon, 22 May 2017, Joonas Lahtinen wrote:
> On la, 2017-05-20 at 10:56 +0900, J. R. Okajima wrote:
> > "J. R. Okajima":
> > > 
> > > I don't know whether the fix is good to me or not yet. I will test your
> > > fix, but I am busy now and my test will be a few weeks later. Other
> > > people may want the fix soon. So I'd suggest you to reproduce the
> > > problem on your side. I guess "mem=1G" or "mem=512M" will make it easier
> > > to reproduce the problem.
> > > Of course, if you are sure the fix is correct, then you don't have to
> > > wait for my test. Release it soon for other people.
> > 
> > Now I am going to able to run my local test.
> > But V3 patch failed to apply onto v4.11.0.
> > 
> > Would you provide us two versions of the patch, one for v4.11 series and
> > the other of v4.12-rcN?
> 
> For v4.12-rc2 the backport is here:
> 
> https://patchwork.freedesktop.org/patch/156990/

This fix seems to have got lost: we've been waiting a month,
and 4.12 is now at rc3: please expedite the unexpedited :)

Thanks,
Hugh