mm/memory: page_add_file_rmap() -> folio_add_file_rmap_[pte|pmd]()

mm/memory: page_add_file_rmap() -> folio_add_file_rmap_[pte|pmd]()

Let's convert insert_page_into_pte_locked() and do_set_pmd().  While at
it, perform some folio conversion.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: David Hildenbrand <[email protected]>
Reviewed-by: Yin Fengwei <[email protected]>
Reviewed-by: Ryan Roberts <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Muchun Song <[email protected]>
Cc: Muchun Song <[email protected]>
Cc: Peter Xu <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>