On Thu, Jul 22, 2021 at 10:02:31AM -0300, Jason Gunthorpe wrote:

On Thu, Jul 22, 2021 at 03:57:39PM +0300, Leon Romanovsky wrote:

quoted

We are talking about two different issues that this refcount_read patch pointed.
You are focused on wrong usage of completion, I saw useless compare of
refcount_t with 0 that can't be.

It can be zero. Anything that does refcount_dec_and_test() can make
the refcount be zero.

It can be, but it is not the case at least for iwpm.

Thanks