summaryrefslogtreecommitdiff
path: root/mm/memcontrol.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/memcontrol.c')
-rw-r--r--mm/memcontrol.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index db9a3fb26a99..e4864e2729e6 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3606,23 +3606,24 @@ void obj_cgroup_uncharge(struct obj_cgroup *objcg, size_t size)
/*
* Because page_memcg(head) is not set on tails, set it now.
*/
-void split_page_memcg(struct page *head, int order)
+void split_page_memcg(struct page *head, int old_order, int new_order)
{
struct folio *folio = page_folio(head);
struct mem_cgroup *memcg = folio_memcg(folio);
int i;
- unsigned int nr = 1 << order;
+ unsigned int old_nr = 1 << old_order;
+ unsigned int new_nr = 1 << new_order;
if (mem_cgroup_disabled() || !memcg)
return;
- for (i = 1; i < nr; i++)
+ for (i = new_nr; i < old_nr; i += new_nr)
folio_page(folio, i)->memcg_data = folio->memcg_data;
if (folio_memcg_kmem(folio))
- obj_cgroup_get_many(__folio_objcg(folio), nr - 1);
+ obj_cgroup_get_many(__folio_objcg(folio), old_nr / new_nr - 1);
else
- css_get_many(&memcg->css, nr - 1);
+ css_get_many(&memcg->css, old_nr / new_nr - 1);
}
#ifdef CONFIG_SWAP