From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lb0-f182.google.com (mail-lb0-f182.google.com [209.85.217.182]) by kanga.kvack.org (Postfix) with ESMTP id BE2EF6B0055 for ; Fri, 30 May 2014 09:51:21 -0400 (EDT) Received: by mail-lb0-f182.google.com with SMTP id z11so1042271lbi.13 for ; Fri, 30 May 2014 06:51:20 -0700 (PDT) Received: from relay.parallels.com (relay.parallels.com. [195.214.232.42]) by mx.google.com with ESMTPS id p17si5578438laa.66.2014.05.30.06.51.17 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 30 May 2014 06:51:17 -0700 (PDT) From: Vladimir Davydov Subject: [PATCH -mm 3/8] memcg: mark caches that belong to offline memcgs as dead Date: Fri, 30 May 2014 17:51:06 +0400 Message-ID: <2cb0d48c06a57586606deec0e368b4a3ecbc0b91.1401457502.git.vdavydov@parallels.com> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.org Cc: cl@linux.com, hannes@cmpxchg.org, mhocko@suse.cz, linux-kernel@vger.kernel.org, linux-mm@kvack.org This will be used by the next patches. Signed-off-by: Vladimir Davydov --- include/linux/slab.h | 2 ++ mm/memcontrol.c | 1 + mm/slab.h | 10 ++++++++++ 3 files changed, 13 insertions(+) diff --git a/include/linux/slab.h b/include/linux/slab.h index d9716fdc8211..d99d5212b815 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -527,6 +527,7 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node) * @list: list_head for the list of all caches in this memcg * @root_cache: pointer to the global, root cache, this cache was derived from * @refcnt: reference counter + * @dead: set to true when owner memcg is turned offline * @unregister_work: worker to destroy the cache */ struct memcg_cache_params { @@ -541,6 +542,7 @@ struct memcg_cache_params { struct list_head list; struct kmem_cache *root_cache; atomic_long_t refcnt; + bool dead; struct work_struct unregister_work; }; }; diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 886b5b414958..ed42fd1105a5 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3294,6 +3294,7 @@ static void memcg_unregister_all_caches(struct mem_cgroup *memcg) mutex_lock(&memcg_slab_mutex); list_for_each_entry_safe(params, tmp, &memcg->memcg_slab_caches, list) { cachep = memcg_params_to_cache(params); + cachep->memcg_params->dead = true; kmem_cache_shrink(cachep); if (atomic_long_dec_and_test(&cachep->memcg_params->refcnt)) memcg_unregister_cache(cachep); diff --git a/mm/slab.h b/mm/slab.h index 961a3fb1f5a2..9515cc520bf8 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -121,6 +121,11 @@ static inline bool is_root_cache(struct kmem_cache *s) return !s->memcg_params || s->memcg_params->is_root_cache; } +static inline bool memcg_cache_dead(struct kmem_cache *s) +{ + return !is_root_cache(s) && s->memcg_params->dead; +} + static inline bool slab_equal_or_root(struct kmem_cache *s, struct kmem_cache *p) { @@ -203,6 +208,11 @@ static inline bool is_root_cache(struct kmem_cache *s) return true; } +static inline bool memcg_cache_dead(struct kmem_cache *s) +{ + return false; +} + static inline bool slab_equal_or_root(struct kmem_cache *s, struct kmem_cache *p) { -- 1.7.10.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org