From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f198.google.com (mail-io0-f198.google.com [209.85.223.198]) by kanga.kvack.org (Postfix) with ESMTP id 2388A6B0253 for ; Thu, 7 Jul 2016 12:08:01 -0400 (EDT) Received: by mail-io0-f198.google.com with SMTP id t74so50242515ioi.3 for ; Thu, 07 Jul 2016 09:08:01 -0700 (PDT) Received: from www262.sakura.ne.jp (www262.sakura.ne.jp. [2001:e42:101:1:202:181:97:72]) by mx.google.com with ESMTPS id p82si216135oih.291.2016.07.07.09.08.00 for (version=TLS1 cipher=AES128-SHA bits=128/128); Thu, 07 Jul 2016 09:08:00 -0700 (PDT) Subject: [PATCH 6/6] mm,oom: Stop clearing TIF_MEMDIE on remote thread. From: Tetsuo Handa References: <201607080058.BFI87504.JtFOOFQFVHSLOM@I-love.SAKURA.ne.jp> In-Reply-To: <201607080058.BFI87504.JtFOOFQFVHSLOM@I-love.SAKURA.ne.jp> Message-Id: <201607080107.ADG65168.QJLFFOFOHMOSVt@I-love.SAKURA.ne.jp> Date: Fri, 8 Jul 2016 01:07:47 +0900 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: akpm@linux-foundation.org, oleg@redhat.com, rientjes@google.com, vdavydov@parallels.com, mst@redhat.com, mhocko@suse.com, mhocko@kernel.org >>From fefcbf2412e38b006281cf1d20f9e3a2bb76714f Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Fri, 8 Jul 2016 00:42:48 +0900 Subject: [PATCH 6/6] mm,oom: Stop clearing TIF_MEMDIE on remote thread. Since oom_has_pending_mm() controls whether to select next OOM victim, we are no longer clearing TIF_MEMDIE on remote thread. Signed-off-by: Tetsuo Handa --- include/linux/oom.h | 2 +- kernel/exit.c | 2 +- mm/oom_kill.c | 5 ++--- 3 files changed, 4 insertions(+), 5 deletions(-) diff --git a/include/linux/oom.h b/include/linux/oom.h index 27be4ba..90e98ea 100644 --- a/include/linux/oom.h +++ b/include/linux/oom.h @@ -90,7 +90,7 @@ extern enum oom_scan_t oom_scan_process_thread(struct oom_control *oc, extern bool out_of_memory(struct oom_control *oc); -extern void exit_oom_victim(struct task_struct *tsk); +extern void exit_oom_victim(void); extern int register_oom_notifier(struct notifier_block *nb); extern int unregister_oom_notifier(struct notifier_block *nb); diff --git a/kernel/exit.c b/kernel/exit.c index 84ae830..1b1dada 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -511,7 +511,7 @@ static void exit_mm(struct task_struct *tsk) mm_update_next_owner(mm); mmput(mm); if (test_thread_flag(TIF_MEMDIE)) - exit_oom_victim(tsk); + exit_oom_victim(); } static struct task_struct *find_alive_thread(struct task_struct *p) diff --git a/mm/oom_kill.c b/mm/oom_kill.c index b6b79ae..d120cb1 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -632,10 +632,9 @@ void mark_oom_victim(struct task_struct *tsk) /** * exit_oom_victim - note the exit of an OOM victim */ -void exit_oom_victim(struct task_struct *tsk) +void exit_oom_victim(void) { - if (!test_and_clear_tsk_thread_flag(tsk, TIF_MEMDIE)) - return; + clear_thread_flag(TIF_MEMDIE); if (!atomic_dec_return(&oom_victims)) wake_up_all(&oom_victims_wait); -- 1.8.3.1 -- 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