A survey:
include/linux/page_owner.h:static inline void copy_page_owner(struct page *oldpage, struct page *newpage)
mm/migration.c:
void remove_migration_ptes(struct page *old, struct page *new, bool locked)
int migrate_page_move_mapping(struct address_space *mapping,
struct page *newpage, struct page *page, int extra_count)
int migrate_huge_page_move_mapping(struct address_space *mapping,
struct page *newpage, struct page *page)
void migrate_page_states(struct page *newpage, struct page *page)
void migrate_page_copy(struct page *newpage, struct page *page)
int migrate_page(struct address_space *mapping,
struct page *newpage, struct page *page,
enum migrate_mode mode)
int buffer_migrate_page(struct address_space *mapping,
struct page *newpage, struct page *page, enum migrate_mode mode)
int buffer_migrate_page_norefs(struct address_space *mapping,
struct page *newpage, struct page *page, enum migrate_mode mode)
rc = mapping->a_ops->migratepage(mapping, newpage,
page, mode);
That's a pretty clear preference for (to, from), so I'm going to change
copy_page_owner() when I convert it to folio_copy_owner(). And I'll
fix remove_migration_ptes() when i convert that to folios.
