Re: [PATCH 037/190] Revert "RDMA/core: Fix several reference count leaks."

[Jason Gunthorpe]

On Wed, Apr 28, 2021 at 02:23:40PM +0200, Greg Kroah-Hartman wrote:

> > We've talked about this specifically before:
> > 
> > http://lore.kernel.org/r/20210331170720.GY2710221@xxxxxxxx
> > 
> > I still don't understand what you mean by "udev sees it properly", as
> > above, all the tests I thought of look OK.
> 
> Can you query the udev database to see the attribute values?

It appears so unless I misunderstand your ask:

$ udevadm info -a /sys/class/infiniband/ibp0s9
    ATTR{ports/1/cm_rx_duplicates/dreq}=="0"

> As you say, it's uABI for now, so odds are nothing can be changed.  It's
> just no fun for when other subsystems want to do this same thing, they
> point at this code and say "see, they did it!" :)

Are you sure we shouldn't just formally support this? 

What is the exact technical blocker?

Jason