From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Liu Subject: [PATCH v2 6/6] memcg: init/free swap cgroup strucutres upon create/free child memcg Date: Mon, 28 Jan 2013 18:54:52 +0800 Message-ID: <510658FC.50009@oracle.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Sender: owner-linux-mm@kvack.org List-ID: Content-Type: text/plain; charset="us-ascii" To: linux-mm@kvack.org Cc: Michal Hocko , Glauber Costa , cgroups@vger.kernel.org Initialize swap_cgroup strucutres when creating a non-root memcg, swap_cgroup_init() will be called for multiple times but only does buffer allocation per the first non-root memcg. Free swap_cgroup structures correspondingly on the last non-root memcg removal. Signed-off-by: Jie Liu CC: Glauber Costa CC: Michal Hocko CC: Kamezawa Hiroyuki CC: Johannes Weiner CC: Mel Gorman CC: Andrew Morton CC: Sha Zhengju --- mm/memcontrol.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index afe5e86..031d242 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5998,6 +5998,7 @@ static void free_work(struct work_struct *work) memcg = container_of(work, struct mem_cgroup, work_freeing); __mem_cgroup_free(memcg); + swap_cgroup_free(); } static void free_rcu(struct rcu_head *rcu_head) @@ -6116,6 +6117,8 @@ mem_cgroup_css_alloc(struct cgroup *cont) INIT_WORK(&stock->work, drain_local_stock); } } else { + if (swap_cgroup_init()) + goto free_out; parent = mem_cgroup_from_cont(cont->parent); memcg->use_hierarchy = parent->use_hierarchy; memcg->oom_kill_disable = parent->oom_kill_disable; -- 1.7.9.5 -- 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