diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 350a14da652..f4079692cbf 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -26,6 +26,7 @@ #include <linux/backing-dev.h> #include <linux/bit_spinlock.h> #include <linux/rcupdate.h> +#include <linux/slab.h> #include <linux/swap.h> #include <linux/spinlock.h> #include <linux/fs.h> @@ -35,6 +36,7 @@ struct cgroup_subsys mem_cgroup_subsys; static const int MEM_CGROUP_RECLAIM_RETRIES = 5; +static struct kmem_cache *page_cgroup_cache; /* * Statistics for memory cgroup. @@ -547,7 +549,7 @@ retry: } unlock_page_cgroup(page); - pc = kzalloc(sizeof(struct page_cgroup), gfp_mask); + pc = kmem_cache_zalloc(page_cgroup_cache, gfp_mask); if (pc == NULL) goto err; @@ -609,7 +611,7 @@ retry: */ res_counter_uncharge(&mem->res, PAGE_SIZE); css_put(&mem->css); - kfree(pc); + kmem_cache_free(page_cgroup_cache, pc); goto retry; } page_assign_page_cgroup(page, pc); @@ -624,7 +626,7 @@ done: return 0; out: css_put(&mem->css); - kfree(pc); + kmem_cache_free(page_cgroup_cache, pc); err: return -ENOMEM; } @@ -682,7 +684,7 @@ void mem_cgroup_uncharge_page(struct page *page) res_counter_uncharge(&mem->res, PAGE_SIZE); css_put(&mem->css); - kfree(pc); + kmem_cache_free(page_cgroup_cache, pc); return; } @@ -989,10 +991,12 @@ mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont) struct mem_cgroup *mem; int node; - if (unlikely((cont->parent) == NULL)) + if (unlikely((cont->parent) == NULL)) { mem = &init_mem_cgroup; - else + page_cgroup_cache = KMEM_CACHE(page_cgroup, SLAB_PANIC); + } else { mem = kzalloc(sizeof(struct mem_cgroup), GFP_KERNEL); + } if (mem == NULL) return ERR_PTR(-ENOMEM); |