diff options
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index f267b309b5b7..fa7a3a1b710a 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3066,22 +3066,21 @@ void __memcg_slab_free_hook(struct kmem_cache *s, struct slab *slab, } /* - * Because folio_memcg(head) is not set on tails, set it now. + * The objcg is only set on the first page, so transfer it to all the + * other pages. */ -void split_page_memcg(struct page *head, int old_order, int new_order) +void split_page_memcg(struct page *first, unsigned order) { - struct folio *folio = page_folio(head); - int i; - unsigned int old_nr = 1 << old_order; - unsigned int new_nr = 1 << new_order; + struct folio *folio = page_folio(first); + unsigned int i, nr = 1 << order; if (mem_cgroup_disabled() || !folio_memcg_charged(folio)) return; - for (i = new_nr; i < old_nr; i += new_nr) + for (i = 1; i < nr; i++) folio_page(folio, i)->memcg_data = folio->memcg_data; - obj_cgroup_get_many(__folio_objcg(folio), old_nr / new_nr - 1); + obj_cgroup_get_many(__folio_objcg(folio), nr - 1); } void folio_split_memcg_refs(struct folio *folio, unsigned old_order, |