From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f174.google.com (mail-io0-f174.google.com [209.85.223.174]) by kanga.kvack.org (Postfix) with ESMTP id 36F846B0005 for ; Fri, 11 Mar 2016 05:11:51 -0500 (EST) Received: by mail-io0-f174.google.com with SMTP id z76so139475080iof.3 for ; Fri, 11 Mar 2016 02:11:51 -0800 (PST) Received: from mx2.parallels.com (mx2.parallels.com. [199.115.105.18]) by mx.google.com with ESMTPS id o64si589841pfj.112.2016.03.11.02.11.33 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 11 Mar 2016 02:11:33 -0800 (PST) From: Vladimir Davydov Subject: [PATCH] mm: memcontrol: zap oom_info_lock Date: Fri, 11 Mar 2016 13:11:23 +0300 Message-ID: <1457691083-22655-1-git-send-email-vdavydov@virtuozzo.com> MIME-Version: 1.0 Content-Type: text/plain Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Johannes Weiner , Michal Hocko , linux-mm@kvack.org, linux-kernel@vger.kernel.org mem_cgroup_print_oom_info is always called under oom_lock, so oom_info_lock is redundant. Signed-off-by: Vladimir Davydov --- mm/memcontrol.c | 4 ---- 1 file changed, 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); } /* -- 2.1.4 -- 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