diff mbox series

[8/9] mm: Fix THP size assumption in mem_cgroup_split_huge_fixup

Message ID 20201026183136.10404-9-willy@infradead.org (mailing list archive)
State New, archived
Headers show
Series More THP fixes | expand

Commit Message

Matthew Wilcox Oct. 26, 2020, 6:31 p.m. UTC 
From: Zi Yan <ziy@nvidia.com>

Ask the page what size it is instead of assuming PMD size.

Signed-off-by: Zi Yan <ziy@nvidia.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/memcontrol.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 3a24e3b619f5..e7824c4dab25 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3280,7 +3280,7 @@  void mem_cgroup_split_huge_fixup(struct page *head)
 	if (mem_cgroup_disabled())
 		return;
 
-	for (i = 1; i < HPAGE_PMD_NR; i++) {
+	for (i = 1; i < thp_nr_pages(head); i++) {
 		css_get(&memcg->css);
 		head[i].mem_cgroup = memcg;
 	}