On 17.12.21 19:06, Mike Kravetz wrote:

On 12/17/21 03:30, David Hildenbrand wrote:

quoted

Let's return early for hugetlb, which really only relies on the compound
mapcount so far and does not support PageDoubleMap() yet. Use the chance

It is too early to say if hugetlb double mapping will use PageDoubleMap().
I do not think (hope) it will be necessary.  So, I think you can drop mention
of it here.

Desires have most certainly been expressed from a couple of parties --
to PTE map huge pages :) Hopefully we'll find a way to avoid
PageDoubleMap, I agree.

Dropping the comment!

quoted

to cleanup the file-THP case to make it easier to grasp. While at it, use
head_compound_mapcount().

This is a preparation for further changes.

Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: David Hildenbrand <redacted>

Acked-by: Mike Kravetz <redacted>

Thanks!

-- 
Thanks,

David / dhildenb