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Date:   Fri, 15 Dec 2017 09:22:21 +0800
From:   weiping zhang <zwp10758@...il.com>
To:     Bruno Wolff III <bruno@...ff.to>
Cc:     Laura Abbott <labbott@...hat.com>, Jan Kara <jack@...e.cz>,
        Jens Axboe <axboe@...nel.dk>, linux-mm@...ck.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        regressions@...mhuis.info, linux-block@...r.kernel.org
Subject: Re: Regression with a0747a859ef6 ("bdi: add error handle for bdi_debug_register")

2017-12-14 23:41 GMT+08:00 Bruno Wolff III <bruno@...ff.to>:
> On Thu, Dec 14, 2017 at 18:09:27 +0800,
>  weiping zhang <zhangweiping@...ichuxing.com> wrote:
>>
>>
>> It seems something wrong with bdi debugfs register, could you help
>> test the forllowing debug patch, I add some debug log, no function
>> change, thanks.
>
>
> I applied your patch to d39a01eff9af1045f6e30ff9db40310517c4b45f and there
> were some new debug messages in the dmesg output. Hopefully this helps. I
> also added the patch and output to the Fedora bug for people following
> there.

Hi Bruno,

Thanks your testing, but I cann't find WARN_ON in device_add_disk from
this boot1.log, could you help reproduce that issue? And does this issue can be
triggered at every bootup ?

--
Thanks
weiping

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