Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965124AbbD0TGm (ORCPT ); Mon, 27 Apr 2015 15:06:42 -0400 Received: from gum.cmpxchg.org ([85.214.110.215]:47301 "EHLO gum.cmpxchg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965043AbbD0TGd (ORCPT ); Mon, 27 Apr 2015 15:06:33 -0400 From: Johannes Weiner To: Andrew Morton Cc: Michal Hocko , Tetsuo Handa , Andrea Arcangeli , Dave Chinner , David Rientjes , Vlastimil Babka , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/9] mm: oom_kill: switch test-and-clear of known TIF_MEMDIE to clear Date: Mon, 27 Apr 2015 15:05:49 -0400 Message-Id: <1430161555-6058-4-git-send-email-hannes@cmpxchg.org> X-Mailer: git-send-email 2.3.6 In-Reply-To: <1430161555-6058-1-git-send-email-hannes@cmpxchg.org> References: <1430161555-6058-1-git-send-email-hannes@cmpxchg.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 942 Lines: 32 exit_oom_victim() already knows that TIF_MEMDIE is set, and nobody else can clear it concurrently. Use clear_thread_flag() directly. Signed-off-by: Johannes Weiner Acked-by: David Rientjes Acked-by: Michal Hocko --- mm/oom_kill.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/oom_kill.c b/mm/oom_kill.c index b2f081f..4b9547b 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -435,8 +435,7 @@ void mark_oom_victim(struct task_struct *tsk) */ void exit_oom_victim(void) { - if (!test_and_clear_thread_flag(TIF_MEMDIE)) - return; + clear_thread_flag(TIF_MEMDIE); down_read(&oom_sem); /* -- 2.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/