Commit 93f39eea authored by Vladimir Davydov's avatar Vladimir Davydov Committed by Linus Torvalds
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memcg: memcg_kmem_create_cache: make memcg_name_buf statically allocated

It isn't worth complicating the code by allocating it on the first access,
because it only takes 256 bytes.
Signed-off-by: default avatarVladimir Davydov <>
Cc: Michal Hocko <>
Cc: Johannes Weiner <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 073ee1c6
......@@ -3135,7 +3135,8 @@ void memcg_free_cache_params(struct kmem_cache *s)
static void memcg_kmem_create_cache(struct mem_cgroup *memcg,
struct kmem_cache *root_cache)
static char *memcg_name_buf; /* protected by memcg_slab_mutex */
static char memcg_name_buf[NAME_MAX + 1]; /* protected by
memcg_slab_mutex */
struct kmem_cache *cachep;
int id;
......@@ -3151,12 +3152,6 @@ static void memcg_kmem_create_cache(struct mem_cgroup *memcg,
if (cache_from_memcg_idx(root_cache, id))
if (!memcg_name_buf) {
memcg_name_buf = kmalloc(NAME_MAX + 1, GFP_KERNEL);
if (!memcg_name_buf)
cgroup_name(memcg->css.cgroup, memcg_name_buf, NAME_MAX + 1);
cachep = kmem_cache_create_memcg(memcg, root_cache, memcg_name_buf);
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