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

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Message-ID: <87shjljybz.fsf@intel.com>
Date:   Wed, 31 May 2017 10:10:40 +0300
From:   Jani Nikula <jani.nikula@...el.com>
To:     Hugh Dickins <hughd@...gle.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 Tue, 30 May 2017, Hugh Dickins <hughd@...gle.com> wrote:
> 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 :)

It's included in my latest pull request to Dave [1], should make it to
v4.12-rc4.

BR,
Jani.


[1] http://mid.mail-archive.com/877f0zlr5d.fsf@intel.com


-- 
Jani Nikula, Intel Open Source Technology Center