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| author | Li Zefan <lizefan@huawei.com> | 2013-09-12 15:13:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-12 15:38:00 -0700 |
| commit | c33bd8354f3a3bb26a98d2b6bf600b7b35657328 (patch) | |
| tree | 3a05898992a6bf4475051d9b49ace72f304473cf /mm | |
| parent | d5d04bb48f0eb89c14e76779bb46212494de0bec (diff) | |
| download | linux-c33bd8354f3a3bb26a98d2b6bf600b7b35657328.tar.gz linux-c33bd8354f3a3bb26a98d2b6bf600b7b35657328.tar.bz2 linux-c33bd8354f3a3bb26a98d2b6bf600b7b35657328.zip | |
memcg: remove redundant code in mem_cgroup_force_empty_write()
vfs guarantees the cgroup won't be destroyed, so it's redundant to get a
css reference.
Signed-off-by: Li Zefan <lizefan@huawei.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index c6bd28edd533..fe6b9f96abdd 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4990,18 +4990,12 @@ static int mem_cgroup_force_empty_write(struct cgroup_subsys_state *css, unsigned int event) { struct mem_cgroup *memcg = mem_cgroup_from_css(css); - int ret; if (mem_cgroup_is_root(memcg)) return -EINVAL; - css_get(&memcg->css); - ret = mem_cgroup_force_empty(memcg); - css_put(&memcg->css); - - return ret; + return mem_cgroup_force_empty(memcg); } - static u64 mem_cgroup_hierarchy_read(struct cgroup_subsys_state *css, struct cftype *cft) { |