[PATCH 2/2] nvme: all namespaces in a subsystem must adhere to a common atomic write size

[Christoph Hellwig]

On Wed, Apr 30, 2025 at 10:18:30AM -0700, Alan Adamson wrote:
> The first namespace that is configured in a subsystem will define the
> subsystem's atomic write size.  This will be based on either AWUPF or
> NAWUPF. Configuring subsequent namespaces in the subsystem requires its
> atomic write size as defined by its AWUPF or NAWUPF to match the
> subsystem's atomic write size. If a namespace doesn't adhere to the
> subsystem's atomic write size, its atomic queue limits will be based on an
> atomic write size of 512 bytes and an error message will be logged.

I don't think an error message is enough, we need to reject the probe
for this buggy configuration to prevent data integrity issues.

Otherwise the series looks good to me.