Re: [PATCH v5] locking/rwsem: Make handoff bit handling more consistent

[Doug Anderson]

Hi,

On Fri, Jul 22, 2022 at 5:17 PM Hillf Danton <hdanton@xxxxxxxx> wrote:
>
> On Fri, 22 Jul 2022 07:02:42 -0700 Doug Anderson wrote:
> >
> > Thanks! I added this diff to your previous diff and my simple test
> > still passes and I don't see your WARN_ON triggered.
>
> Thanks!
> >
> > How do we move forward? Are you going to officially submit a patch
> > with both of your diffs squashed together? Are we waiting for
> > additional review from someone?
>
> Given it is not unusual for us to miss anything important, lets take
> a RWSEM_WAIT_TIMEOUT nap now or two.

It appears that another fix has landed in the meantime. Commit
6eebd5fb2083 ("locking/rwsem: Allow slowpath writer to ignore handoff
bit if not set by first waiter").

...unfortunately with that patch my test cases still hangs. :(