Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751549Ab3CNH7U (ORCPT ); Thu, 14 Mar 2013 03:59:20 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:4885 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1750988Ab3CNH7S (ORCPT ); Thu, 14 Mar 2013 03:59:18 -0400 X-IronPort-AV: E=Sophos;i="4.84,843,1355068800"; d="scan'208";a="6870985" From: liguang To: viro@zeniv.linux.org.uk, oleg@redhat.com, edumazet@google.com, linux-kernel@vger.kernel.org Cc: liguang Subject: [PATCH 2/2] task_work: check callback if it's NULL Date: Thu, 14 Mar 2013 15:57:45 +0800 Message-Id: <1363247865-3531-2-git-send-email-lig.fnst@cn.fujitsu.com> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1363247865-3531-1-git-send-email-lig.fnst@cn.fujitsu.com> References: <1363247865-3531-1-git-send-email-lig.fnst@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/03/14 15:57:56, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/03/14 15:57:56, Serialize complete at 2013/03/14 15:57:56 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 733 Lines: 27 Signed-off-by: liguang --- kernel/task_work.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/kernel/task_work.c b/kernel/task_work.c index 0bf4258..f458b08 100644 --- a/kernel/task_work.c +++ b/kernel/task_work.c @@ -75,7 +75,8 @@ void task_work_run(void) do { next = work->next; - work->func(work); + if (unlikely(work->func)) + work->func(work); work = next; cond_resched(); } while (work); -- 1.7.2.5 -- 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/