mm/migrate: Add folio_migrate_flags()
Turn migrate_page_states() into a wrapper around folio_migrate_flags(). Also convert two functions only called from folio_migrate_flags() to be folio-based. ksm_migrate_page() becomes folio_migrate_ksm() and copy_page_owner() becomes folio_copy_owner(). folio_migrate_flags() alone shrinks by two thirds -- 1967 bytes down to 642 bytes. Signed-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: NZi Yan <ziy@nvidia.com> Reviewed-by: NDavid Howells <dhowells@redhat.com> Acked-by: NVlastimil Babka <vbabka@suse.cz>
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