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Re: [PATCH 1/2] workqueue: skip lockdep wq dependency in cancel_work_sync()

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On Wed, 2018-08-22 at 11:45 +0900, Byungchul Park wrote:

> That should've been adjusted as well when Ingo reverted Cross-release.

I can't really say.

> It would be much easier to add each pair, acquire/release, before
> wait_for_completion() in both flush_workqueue() and flush_work() than
> reverting the whole commit.

The commit doesn't do much more than this though.

> What's lacking is only lockdep annotations for wait_for_completion().

No, I disagree. Like I said before, we need the lockdep annotations on
the WQ even when we don't actually create/use the completion, so we can
catch issues even when they don't actually happen.

johannes



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