Re: [PATCH 1/3] kernel/workqueue: Remove lockdep annotation from __flush_work()

[Johannes Berg]

On Thu, 2018-10-25 at 17:31 +0200, Johannes Berg wrote:
> On Thu, 2018-10-25 at 15:05 +0000, Bart Van Assche wrote:
> > As documented in a comment in start_flush_work(), calling flush_work()
> > from a multi-threaded workqueue is safe if that workqueue is not
> > equipped with a rescuer. Avoid that flush_work() calls from inside a
> > work item executing on such a queue trigger a lockdep complaint.

So actually, come to think of it, certainly this will cause a false
negative in this case?

mutex_lock(A);
flush_work(W);

worker_W_function()
{
	mutex_lock(A);
}

right?

johannes