On Wed, Mar 30, 2022 at 06:03:01PM +0800, Shiyang Ruan wrote:
> Because I am not sure if the offset between each layer is page aligned.  For
> example, when pmem dirver handles ->memory_failure(), it should subtract its
> ->data_offset when it calls dax_holder_notify_failure().

If they aren't, none of the DAX machinery would work.

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