diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 19a4348974a4..7ef6ea9d5e4a 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c

@@ -333,6 +333,7 @@ struct cgroup_subsys_state *mem_cgroup_css_from_page(struct page *page)
 /**
  * page_cgroup_ino - return inode number of the memcg a page is charged to
  * @page: the page
+ * @online: return closest online ancestor
  *
  * Look up the closest online ancestor of the memory cgroup @page is charged to
  * and return its inode number or 0 if @page is not charged to any cgroup. It

@@ -343,14 +344,14 @@ struct cgroup_subsys_state *mem_cgroup_css_from_page(struct page *page)
  * after page_cgroup_ino() returns, so it only should be used by callers that
  * do not care (such as procfs interfaces).
  */
-ino_t page_cgroup_ino(struct page *page)
+ino_t page_cgroup_ino(struct page *page, bool online)
 {
 	struct mem_cgroup *memcg;
 	unsigned long ino = 0;
 
 	rcu_read_lock();
 	memcg = READ_ONCE(page->mem_cgroup);
-	while (memcg && !(memcg->css.flags & CSS_ONLINE))
+	while (memcg && online && !(memcg->css.flags & CSS_ONLINE))
 		memcg = parent_mem_cgroup(memcg);
 	if (memcg)
 		ino = cgroup_ino(memcg->css.cgroup);