mm: add folio_test_movable()

This is the folio equivalent of PageMovable() which is needed to
convert mm/migrate.c to folios.

Link: https://lkml.kernel.org/r/20220504182857.4013401-26-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index 2707bfd..069a89e 100644 (file)
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -105,6 +105,11 @@ static inline void __ClearPageMovable(struct page *page)
 }
 #endif
 
+static inline bool folio_test_movable(struct folio *folio)
+{
+       return PageMovable(&folio->page);
+}
+
 #ifdef CONFIG_NUMA_BALANCING
 extern int migrate_misplaced_page(struct page *page,
                                  struct vm_area_struct *vma, int node);