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    SubjectRe: Regression with a0747a859ef6 ("bdi: add error handle for bdi_debug_register")
    2017-12-14 23:41 GMT+08:00 Bruno Wolff III <bruno@wolff.to>:
    > On Thu, Dec 14, 2017 at 18:09:27 +0800,
    > weiping zhang <zhangweiping@didichuxing.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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