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From:   Oleksandr Natalenko <oleksandr@natalenko.name>
To:     Jan Kara <jack@suse.cz>
Cc:     Paolo Valente <paolo.valente@linaro.org>,
        Jens Axboe <axboe@kernel.dk>,
        linux-block <linux-block@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Luca Mariotti <mariottiluca1@hotmail.it>,
        Holger =?ISO-8859-1?Q?Hoffst=E4tte?= 
        <holger@applied-asynchrony.com>,
        Pietro Pedroni <pedroni.pietro.96@gmail.com>,
        Piotr Gorski <lucjan.lucjanov@gmail.com>,
        Khazhy Kumykov <khazhy@google.com>, Jan Kara <jack@suse.cz>
Subject: Re: [PATCH FIXES/IMPROVEMENTS 0/7] block, bfq: preserve control, boost throughput, fix bugs
Date:   Tue, 22 Jun 2021 19:26:31 +0200
Message-ID: <1829163.dQHRSAV4G1@spock>
In-Reply-To: <20210622162948.GJ14261@quack2.suse.cz>
References: <20210619140948.98712-1-paolo.valente@linaro.org> <8003699.Qy64SzLKsf@spock> <20210622162948.GJ14261@quack2.suse.cz>
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Ahoj.

On =C3=BAter=C3=BD 22. =C4=8Dervna 2021 18:29:48 CEST Jan Kara wrote:
> On Tue 22-06-21 09:35:05, Oleksandr Natalenko wrote:
> > On =C3=BAter=C3=BD 22. =C4=8Dervna 2021 9:08:43 CEST Paolo Valente wrot=
e:
> > > CCing also Jan and Khazhy, because in your commit log I see also the
> > > commit on bfq_requests_merged().
> > >=20
> > > Is this OOPS reproducible for you?
> >=20
> > No, I haven't found a reproducer, at least yet. It took half a day of
> > uptime to hit this, so might not be that easy.
>=20
> Hum, if you can acquire a crash dump it would be the easiest I guess. We'd
> need to find out more about the request we crash on - whether it's
> otherwise valid, in what state it is etc...

Yes, I understand that. Once (and if) I reproduce it reliably, of course.

Thanks.

=2D-=20
Oleksandr Natalenko (post-factum)