[PATCH -next] migrate: stop using 0 as NULL pointer

[Yang Li]

mm/migrate.c:1198:24: warning: Using plain integer as NULL pointer

Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3080
Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
Signed-off-by: Yang Li <yang.lee@xxxxxxxxxxxxxxxxx>
---
 mm/migrate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index 15dc56a3da7a..e50b3c42e6ad 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1195,7 +1195,7 @@ static int unmap_and_move(new_page_t get_new_page,
 		return -ENOMEM;
 	dst = page_folio(newpage);
 
-	dst->private = 0;
+	dst->private = NULL;
 	rc = __unmap_and_move(src, dst, force, mode);
 	if (rc == MIGRATEPAGE_SUCCESS)
 		set_page_owner_migrate_reason(&dst->page, reason);
-- 
2.20.1.7.g153144c