Re: waitqueue lockdep annotation V3

Peter Zijlstra
2018-07-17T15:04:39Z

On Tue, Jul 17, 2018 at 04:24:37PM +0200, Christoph Hellwig wrote:
> On Thu, Jul 12, 2018 at 12:17:53PM -0700, Davidlohr Bueso wrote:
> > On Thu, 14 Dec 2017, Christoph Hellwig wrote:
> >
> >> Hi all,
> >>
> >> this series adds a strategic lockdep_assert_held to __wake_up_common
> >> to ensure callers really do hold the wait_queue_head lock when calling
> >> the unlocked wake_up variants. It turns out epoll did not do this
> >> for a fairly common path (hit all the time by systemd during bootup),
> >> so the second patch fixed this instance as well.
> >
> > I ran into these changes because of patch 1 getting rid of ep->lock. Is
> > there any reason why this series was never picked up?
>
> I'd love to see this merged, but I never heard back about it.

Seeing how it touched fs bits, I was expecting this to go through the
vfs tree; was that not the intended target?