--- x/mm/migrate.c
+++ y/mm/migrate.c
@@ -1189,6 +1189,8 @@ static int migrate_folio_unmap(new_page_
 		}
 		if (!force)
 			goto out;
+		rc = -EBUSY;
+		goto out;
 		folio_wait_writeback(src);
 	}