[PATCH v1 0/3] udmabuf: Add support for page migration out of movable zone or CMA

[David Hildenbrand]

>> - Add a new API to the backing store/allocator to longterm-pin the page.
>>    For example, something along the lines of shmem_pin_mapping_page_longterm()
>>    for shmem as suggested by Daniel. A similar one needs to be added for
>>    hugetlbfs as well.
> 
> This may also be reasonable.

Sounds reasonable to keep the old API (that we unfortunately have) working.

-- 
Cheers,

David / dhildenb