diff options
| -rw-r--r-- | mm/slab.h | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/mm/slab.h b/mm/slab.h index d96c87a30a9b..43f8ce4aa325 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -348,6 +348,7 @@ static __always_inline int memcg_charge_slab(struct page *page, gfp_t gfp, int order, struct kmem_cache *s) { + unsigned int nr_pages = 1 << order; struct mem_cgroup *memcg; struct lruvec *lruvec; int ret; @@ -360,21 +361,21 @@ static __always_inline int memcg_charge_slab(struct page *page, if (unlikely(!memcg || mem_cgroup_is_root(memcg))) { mod_node_page_state(page_pgdat(page), cache_vmstat_idx(s), - (1 << order)); - percpu_ref_get_many(&s->memcg_params.refcnt, 1 << order); + nr_pages); + percpu_ref_get_many(&s->memcg_params.refcnt, nr_pages); return 0; } - ret = memcg_kmem_charge_memcg(memcg, gfp, 1 << order); + ret = memcg_kmem_charge_memcg(memcg, gfp, nr_pages); if (ret) goto out; lruvec = mem_cgroup_lruvec(memcg, page_pgdat(page)); - mod_lruvec_state(lruvec, cache_vmstat_idx(s), 1 << order); + mod_lruvec_state(lruvec, cache_vmstat_idx(s), nr_pages); /* transer try_charge() page references to kmem_cache */ - percpu_ref_get_many(&s->memcg_params.refcnt, 1 << order); - css_put_many(&memcg->css, 1 << order); + percpu_ref_get_many(&s->memcg_params.refcnt, nr_pages); + css_put_many(&memcg->css, nr_pages); out: css_put(&memcg->css); return ret; @@ -387,6 +388,7 @@ out: static __always_inline void memcg_uncharge_slab(struct page *page, int order, struct kmem_cache *s) { + unsigned int nr_pages = 1 << order; struct mem_cgroup *memcg; struct lruvec *lruvec; @@ -394,15 +396,15 @@ static __always_inline void memcg_uncharge_slab(struct page *page, int order, memcg = READ_ONCE(s->memcg_params.memcg); if (likely(!mem_cgroup_is_root(memcg))) { lruvec = mem_cgroup_lruvec(memcg, page_pgdat(page)); - mod_lruvec_state(lruvec, cache_vmstat_idx(s), -(1 << order)); - memcg_kmem_uncharge_memcg(memcg, order); + mod_lruvec_state(lruvec, cache_vmstat_idx(s), -nr_pages); + memcg_kmem_uncharge_memcg(memcg, nr_pages); } else { mod_node_page_state(page_pgdat(page), cache_vmstat_idx(s), - -(1 << order)); + -nr_pages); } rcu_read_unlock(); - percpu_ref_put_many(&s->memcg_params.refcnt, 1 << order); + percpu_ref_put_many(&s->memcg_params.refcnt, nr_pages); } extern void slab_init_memcg_params(struct kmem_cache *); |