mm: Export migrate_page_move_mapping and migrate_page_copy

commit 1118dce773d84f39ebd51a9fe7261f9169cb056e upstream.

Export these symbols such that UBIFS can implement
->migratepage.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/mm/migrate.c b/mm/migrate.c
index 56d273e828d6d328deaca533681b6f2e86f8dc23..5193433d860591c709446dc6143c72bafe508651 100644 (file)
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -443,6 +443,7 @@ int migrate_page_move_mapping(struct address_space *mapping,
 
        return MIGRATEPAGE_SUCCESS;
 }
+EXPORT_SYMBOL(migrate_page_move_mapping);
 
 /*
  * The expected number of remaining references is the same as that
@@ -591,6 +592,7 @@ void migrate_page_copy(struct page *newpage, struct page *page)
        if (PageWriteback(newpage))
                end_page_writeback(newpage);
 }
+EXPORT_SYMBOL(migrate_page_copy);
 
 /************************************************************
  *                    Migration functions