[PATCH v2 04/11] mm/migration: fix the confusing PageTransHuge check

[Miaohe Lin]

prep_transhuge_page should be called when PageTransHuge(page) is true.
The newly allocated new_page is not yet PageTransHuge though it could
pass the check as PageTransHuge only checks PageHead now.

Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
---
 mm/migrate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index 0ea555e4eaae..b16c561a9a4b 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1560,7 +1560,7 @@ struct page *alloc_migration_target(struct page *page, unsigned long private)
 
 	new_page = __alloc_pages(gfp_mask, order, nid, mtc->nmask);
 
-	if (new_page && PageTransHuge(new_page))
+	if (new_page && PageTransHuge(page))
 		prep_transhuge_page(new_page);
 
 	return new_page;
-- 
2.23.0