From: Ming Lei <ming.lei@redhat.com>
To: Omar Kilani <omar.kilani@gmail.com>
Cc: linux-block@vger.kernel.org
Subject: Re: Deadlock in wbt / rq-qos
Date: Tue, 15 Jun 2021 22:07:07 +0800 [thread overview]
Message-ID: <YMi0C5U0NeMdO04g@T590> (raw)
In-Reply-To: <CA+8F9hjFDE9b31-qsxsVJf4SV9Ctr-mwOJrsw0kVeC7DdN=5XQ@mail.gmail.com>
On Tue, Jun 15, 2021 at 06:42:40AM -0700, Omar Kilani wrote:
> Hi Ming,
>
> It looks to be the same issue based on the log timelines. I *think* that
> patch will fix it but it’s really subtle so I’ll test.
>
> I can only trigger this on an AMD Milan machine for some reason that I
> don’t understand. Sometimes in 800 seconds, sometimes in 5 hours.
>
> I have a new build with printk’s on the atomic_inc_below to check the
> acquire condition.
>
> I’ll add that patch and re-test. But I couldn’t find that change in the
> linux-block git? Is it in a specific branch?
The patch is in the branch of for-5.14/block:
https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=for-5.14/block&id=11c7aa0ddea8611007768d3e6b58d45dc60a19e1
Thanks,
Ming
next prev parent reply other threads:[~2021-06-15 14:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-13 15:49 Deadlock in wbt / rq-qos Omar Kilani
2021-06-13 17:03 ` Omar Kilani
2021-06-14 20:26 ` Omar Kilani
2021-06-15 9:22 ` Ming Lei
[not found] ` <CA+8F9hjFDE9b31-qsxsVJf4SV9Ctr-mwOJrsw0kVeC7DdN=5XQ@mail.gmail.com>
2021-06-15 14:07 ` Ming Lei [this message]
2021-06-16 15:06 ` Omar Kilani
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