summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--mm/memcontrol.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 350a14da6525..f4079692cbf5 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);