Re: [PATCH 5/5] IB/hfi1: Fix improper uses of smp_mb__before_atomic()

Andrea Parri
2019-04-29T23:17:09Z

Hi Mike,

> >This barrier only applies to the read-modify-write operations; in
> >particular, it does not apply to the atomic_read() primitive.
> >
> >Replace the barrier with an smp_mb().
>
> This is one of a couple of barrier issues that we are currently looking into.
>
> See:
>
> [PATCH for-next 6/9] IB/rdmavt: Add new completion inline
>
> We will take a look at this one as well.

Thank you for the reference and for looking into this,

Andrea