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    SubjectRe: Freezable workqueue blocks non-freezable workqueue during the system resume process
    Hello, Peter.

    On Wed, Feb 24, 2016 at 03:24:30PM +0800, Peter Chen wrote:
    > > You might want to complain to the block-layer people about this. I
    > > don't know if anything can be done to fix it.
    > >
    > > Or maybe flush_work and flush_delayed_work can be changed to avoid
    > > blocking if the workqueue is frozen. Tejun?
    > >
    >
    > I have a patch to show the root cause of this issue.
    >
    > http://www.spinics.net/lists/linux-usb/msg136815.html

    I don't get it. Why would it deadlock? Shouldn't things get rolling
    once the workqueues are thawed?

    Thanks.

    --
    tejun

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