diff options
| -rw-r--r-- | mm/memcontrol.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 70690fdf53cc..239f69ed1ac1 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -6984,9 +6984,11 @@ void mem_cgroup_migrate(struct page *oldpage, struct page *newpage) /* Force-charge the new page. The old one will be freed soon */ nr_pages = thp_nr_pages(newpage); - page_counter_charge(&memcg->memory, nr_pages); - if (do_memsw_account()) - page_counter_charge(&memcg->memsw, nr_pages); + if (!mem_cgroup_is_root(memcg)) { + page_counter_charge(&memcg->memory, nr_pages); + if (do_memsw_account()) + page_counter_charge(&memcg->memsw, nr_pages); + } css_get(&memcg->css); commit_charge(newpage, memcg); |