Re: [PATCH v7 05/24] mm: devmap: refactor 1-based refcounting for ZONE_DEVICE pages

[Christoph Hellwig]

So while this looks correct and I still really don't see the major
benefit of the new code organization, especially as it bloats all
put_page callers.

I'd love to see code size change stats for an allyesconfig on this
commit.