On Tue, Aug 16, 2022 at 9:22 AM Hector Martin <marcan@xxxxxxxxx> wrote:
>
> It's worth pointing out that the workqueue code does *not* pair
> test_and_set_bit() with clear_bit(). It does an atomic_long_set()
> instead
Yes. That code is much too subtle.
And yes, I think those barriers are
(a) misleading
(b) don't work with the "serialize bits using spinlock" model at all
It's a good example of "we need to really have a better model for this".
Linus
