But that's a bit weird: we call __init_single_page()->init_page_count() to
initialize it to 1, to then set it back to 0.
Maybe we can just pass to __init_single_page() the refcount we want to have
directly? Can be a patch on top of course.
Once the dust settles on this series we won't need the pgmap->type check at
all because all ZONE_DEVICE pages will get an initial count of 0. I have some
follow up clean-ups for after this series is applied (particularly with regards
to pgmap refcounts), so if it's ok I'd rather do this as a follow-up.
Sure. For ordinary memory hotplug I'll also convert it to start with
refcount=0 soonish, so there we're also simply pass 0 to __init_single_page.
--
Cheers,
David / dhildenb
