[PATCH] nvme: stop using AWUPF

[Christoph Hellwig]

On Mon, Jan 26, 2026 at 01:28:42PM +0000, John Garry wrote:
> As for the per-controller AWUPF, how this value applies to shared
> namespaces is missing in the specification. Furthermore, the value is in
> terms of logical blocks, which is an NS entity.
> 
> Since AWUPF is so poorly defined, stop using it already together.
> Hopefully this will force vendors to implement NAWUPF support always.
> 
> Note that AWUPF not only effects atomic write support, but also the
> physical block size reported for the device.

Can you add a dev_info to the kernel log when AWUPF is set, but
NAWUPF is not?  This might really help with debugging any issue
if people were already using the atomic write support (hopefuly
not..), or if any other issue arises later.  Otherwise this looks
good to me.