Re: [v4.13-rc BUG] system lockup when running big buffered write(4M) to IB SRP via mpath

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On Wed, Aug 23, 2017 at 11:12 PM, Bart Van Assche
<Bart.VanAssche@xxxxxxx> wrote:
> On Wed, 2017-08-23 at 19:35 +0800, Ming Lei wrote:
>> soft lockup still can be observed easily with patch d4acf3650c7c(
>> block: Make blk_mq_delay_kick_requeue_list() rerun the queue at a quiet time),
>> but no hard lockup.
>
> Hello Ming,
>
> I never claimed that commit d4acf3650c7c was a full solution to avoid these
> soft lockups. I assume these results mean that patch series "[PATCH 0/7]
> Device mapper and dm-mpath fixes" was not applied to the kernel used in your
> tests? A colleague of you has reported that that patch series is sufficient

OK, thanks for your clarification.

I run v4.13-rc6 with block for-next, so these patches are not applied in my
kernel.

-- 
Ming Lei



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