Re: lockdep trace from posix timers

[Peter Zijlstra]

On Fri, 2012-08-17 at 17:14 +0200, Oleg Nesterov wrote:
> I still think that task_work_add() should synhronize with exit_task_work()
> itself and fail if necessary. But I wasn't able to convince Al ;)

I'm not at all sure how that relates to needing task_lock() in the
keyctl stuff.

Also, can't task_work use llist stuff? That would also avoid using
->pi_lock.
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