Subject: [merged] memcg-kill-memcg-refcnt.patch removed from -mm tree
To: lizefan@xxxxxxxxxx,glommer@xxxxxxxxxx,hannes@xxxxxxxxxxx,hughd@xxxxxxxxxx,kamezawa.hiroyu@xxxxxxxxxxxxxx,mhocko@xxxxxxx,tj@xxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Tue, 09 Jul 2013 16:20:47 -0700
The patch titled
Subject: memcg: kill memcg refcnt
has been removed from the -mm tree. Its filename was
memcg-kill-memcg-refcnt.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Li Zefan <lizefan@xxxxxxxxxx>
Subject: memcg: kill memcg refcnt
Now memcg has the same life cycle as its corresponding cgroup.
Kill the useless refcnt.
Signed-off-by: Li Zefan <lizefan@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxx>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Glauber Costa <glommer@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 18 +-----------------
1 file changed, 1 insertion(+), 17 deletions(-)
diff -puN mm/memcontrol.c~memcg-kill-memcg-refcnt mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-kill-memcg-refcnt
+++ a/mm/memcontrol.c
@@ -299,8 +299,6 @@ struct mem_cgroup {
bool oom_lock;
atomic_t under_oom;
- atomic_t refcnt;
-
int swappiness;
/* OOM-Killer disable */
int oom_kill_disable;
@@ -503,8 +501,6 @@ enum res_type {
*/
static DEFINE_MUTEX(memcg_create_mutex);
-static void mem_cgroup_put(struct mem_cgroup *memcg);
-
static inline
struct mem_cgroup *mem_cgroup_from_css(struct cgroup_subsys_state *s)
{
@@ -6238,17 +6234,6 @@ static void free_rcu(struct rcu_head *rc
schedule_work(&memcg->work_freeing);
}
-static void __mem_cgroup_put(struct mem_cgroup *memcg, int count)
-{
- if (atomic_sub_and_test(count, &memcg->refcnt))
- call_rcu(&memcg->rcu_freeing, free_rcu);
-}
-
-static void mem_cgroup_put(struct mem_cgroup *memcg)
-{
- __mem_cgroup_put(memcg, 1);
-}
-
/*
* Returns the parent mem_cgroup in memcgroup hierarchy with hierarchy enabled.
*/
@@ -6308,7 +6293,6 @@ mem_cgroup_css_alloc(struct cgroup *cont
memcg->last_scanned_node = MAX_NUMNODES;
INIT_LIST_HEAD(&memcg->oom_notify);
- atomic_set(&memcg->refcnt, 1);
memcg->move_charge_at_immigrate = 0;
mutex_init(&memcg->thresholds_lock);
spin_lock_init(&memcg->move_lock);
@@ -6399,7 +6383,7 @@ static void mem_cgroup_css_free(struct c
struct mem_cgroup *memcg = mem_cgroup_from_cont(cont);
memcg_destroy_kmem(memcg);
- __mem_cgroup_free(memcg);
+ call_rcu(&memcg->rcu_freeing, free_rcu);
}
#ifdef CONFIG_MMU
_
Patches currently in -mm which might be from lizefan@xxxxxxxxxx are
origin.patch
linux-next.patch
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