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| author | Vladimir Davydov <vdavydov@virtuozzo.com> | 2016-03-17 14:20:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-17 15:09:34 -0700 |
| commit | e0775d10f1e65548fcbadf614a6bf3d216165021 (patch) | |
| tree | b04e24a5724a5cc80c4b6dbedc7654bb4a164016 | |
| parent | 8b5926560fafe80fe764af2aade152d490a96546 (diff) | |
| download | linux-e0775d10f1e65548fcbadf614a6bf3d216165021.tar.bz2 | |
mm: memcontrol: zap oom_info_lock
mem_cgroup_print_oom_info is always called under oom_lock, so
oom_info_lock is redundant.
Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/memcontrol.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index fa7bf354ae32..36db05fa8acb 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1150,12 +1150,9 @@ static bool mem_cgroup_wait_acct_move(struct mem_cgroup *memcg) */ void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p) { - /* oom_info_lock ensures that parallel ooms do not interleave */ - static DEFINE_MUTEX(oom_info_lock); struct mem_cgroup *iter; unsigned int i; - mutex_lock(&oom_info_lock); rcu_read_lock(); if (p) { @@ -1199,7 +1196,6 @@ void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p) pr_cont("\n"); } - mutex_unlock(&oom_info_lock); } /* |