From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id D60976B00EE for ; Wed, 27 Jul 2011 05:48:02 -0400 (EDT) From: Sven Eckelmann Subject: [PATCHv4 09/11] memcg: Use *_dec_not_zero instead of *_add_unless Date: Wed, 27 Jul 2011 11:47:48 +0200 Message-Id: <1311760070-21532-9-git-send-email-sven@narfation.org> In-Reply-To: <1311760070-21532-1-git-send-email-sven@narfation.org> References: <1311760070-21532-1-git-send-email-sven@narfation.org> Sender: owner-linux-mm@kvack.org List-ID: To: linux-arch@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Sven Eckelmann , Balbir Singh , Daisuke Nishimura , KAMEZAWA Hiroyuki , linux-mm@kvack.org atomic_dec_not_zero is defined for each architecture through to provide the functionality of atomic_add_unless(x, -1, 0). Signed-off-by: Sven Eckelmann Cc: Balbir Singh Cc: Daisuke Nishimura Cc: KAMEZAWA Hiroyuki Cc: linux-mm@kvack.org --- mm/memcontrol.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 5f84d23..00a7580 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1909,10 +1909,10 @@ static void mem_cgroup_unmark_under_oom(struct mem_cgroup *mem) /* * When a new child is created while the hierarchy is under oom, * mem_cgroup_oom_lock() may not be called. We have to use - * atomic_add_unless() here. + * atomic_dec_not_zero() here. */ for_each_mem_cgroup_tree(iter, mem) - atomic_add_unless(&iter->under_oom, -1, 0); + atomic_dec_not_zero(&iter->under_oom); } static DEFINE_SPINLOCK(memcg_oom_lock); -- 1.7.5.4 -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org