diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index c5285afe204..15aa34b11e8 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -31,6 +31,7 @@ #include <linux/spinlock.h> #include <linux/fs.h> #include <linux/seq_file.h> +#include <linux/vmalloc.h> #include <asm/uaccess.h> @@ -983,6 +984,29 @@ static void free_mem_cgroup_per_zone_info(struct mem_cgroup *mem, int node) kfree(mem->info.nodeinfo[node]); } +static struct mem_cgroup *mem_cgroup_alloc(void) +{ + struct mem_cgroup *mem; + + if (sizeof(*mem) < PAGE_SIZE) + mem = kmalloc(sizeof(*mem), GFP_KERNEL); + else + mem = vmalloc(sizeof(*mem)); + + if (mem) + memset(mem, 0, sizeof(*mem)); + return mem; +} + +static void mem_cgroup_free(struct mem_cgroup *mem) +{ + if (sizeof(*mem) < PAGE_SIZE) + kfree(mem); + else + vfree(mem); +} + + static struct cgroup_subsys_state * mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont) { @@ -993,12 +1017,11 @@ mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont) mem = &init_mem_cgroup; page_cgroup_cache = KMEM_CACHE(page_cgroup, SLAB_PANIC); } else { - mem = kzalloc(sizeof(struct mem_cgroup), GFP_KERNEL); + mem = mem_cgroup_alloc(); + if (!mem) + return ERR_PTR(-ENOMEM); } - if (mem == NULL) - return ERR_PTR(-ENOMEM); - res_counter_init(&mem->res); memset(&mem->info, 0, sizeof(mem->info)); @@ -1012,7 +1035,7 @@ free_out: for_each_node_state(node, N_POSSIBLE) free_mem_cgroup_per_zone_info(mem, node); if (cont->parent != NULL) - kfree(mem); + mem_cgroup_free(mem); return ERR_PTR(-ENOMEM); } @@ -1032,7 +1055,7 @@ static void mem_cgroup_destroy(struct cgroup_subsys *ss, for_each_node_state(node, N_POSSIBLE) free_mem_cgroup_per_zone_info(mem, node); - kfree(mem_cgroup_from_cont(cont)); + mem_cgroup_free(mem_cgroup_from_cont(cont)); } static int mem_cgroup_populate(struct cgroup_subsys *ss, |