Re: [PATCH 05/29] dax: remove the pgmap sanity checks in generic_fsdax_supported

On Tue, Nov 9, 2021 at 12:33 AM Christoph Hellwig [off-list ref] wrote:

Drivers that register a dax_dev should make sure it works, no need
to double check from the file system.

Reviewed-by: Dan Williams <redacted>

...with a self-reminder to migrate this validation to a unit test to
backstop any future refactoring of the memmap reservation code.
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