Re: [RESEND PATCH v2 2/2] lockdep: Remove unnecessary acquisitions wrt workqueue flush

From: Tejun Heo
Date: Thu Oct 12 2017 - 11:38:29 EST


Hello,

On Thu, Oct 12, 2017 at 04:54:35PM +0900, Byungchul Park wrote:
> On Tue, Oct 10, 2017 at 03:51:37PM +0900, Byungchul Park wrote:
> > The workqueue added manual acquisitions to catch deadlock cases.
> > Now crossrelease was introduced, some of those are redundant, since
> > wait_for_completion() already includes the acquisition for itself.
> > Removed it.
>
> I think manual annotations for wait_for_completion() should be removed
> in this way, since it's already embedded in wait_for_completion(), now.
> Don't you think so?

As long as we have the same level of protection, simpler code is of
course preferable. That said, I haven't followed the discussion
closely and don't want to apply it without Peter's ack. Peter?

Thanks.

--
tejun