mm: move folio_set_compound_order() to mm/internal.h

folio_set_compound_order() is moved to an mm-internal location so external
folio users cannot misuse this function.  Change the name of the function
to folio_set_order() and use WARN_ON_ONCE() rather than BUG_ON.  Also,
handle the case if a non-large folio is passed and add clarifying comments
to the function.

Link: https://lore.kernel.org/lkml/[email protected]/T/
Link: https://lkml.kernel.org/r/[email protected]
Fixes: 9fd330582b2f ("mm: add folio dtor and order setter functions")
Signed-off-by: Sidhartha Kumar <[email protected]>
Suggested-by: Mike Kravetz <[email protected]>
Suggested-by: Muchun Song <[email protected]>
Suggested-by: Matthew Wilcox <[email protected]>
Suggested-by: John Hubbard <[email protected]>
Reviewed-by: John Hubbard <[email protected]>
Reviewed-by: Muchun Song <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions