From patchwork Wed Dec 22 15:26:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tetsuo Handa X-Patchwork-Id: 12691767 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 048A4C433F5 for ; Wed, 22 Dec 2021 15:26:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237213AbhLVP0b (ORCPT ); Wed, 22 Dec 2021 10:26:31 -0500 Received: from www262.sakura.ne.jp ([202.181.97.72]:53017 "EHLO www262.sakura.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233787AbhLVP0a (ORCPT ); Wed, 22 Dec 2021 10:26:30 -0500 Received: from fsav313.sakura.ne.jp (fsav313.sakura.ne.jp [153.120.85.144]) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id 1BMFQI5C002483; Thu, 23 Dec 2021 00:26:18 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Received: from www262.sakura.ne.jp (202.181.97.72) by fsav313.sakura.ne.jp (F-Secure/fsigk_smtp/550/fsav313.sakura.ne.jp); Thu, 23 Dec 2021 00:26:18 +0900 (JST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/fsav313.sakura.ne.jp) Received: from [192.168.1.9] (M106072142033.v4.enabler.ne.jp [106.72.142.33]) (authenticated bits=0) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTPSA id 1BMFQHIX002480 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NO); Thu, 23 Dec 2021 00:26:17 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Message-ID: Date: Thu, 23 Dec 2021 00:26:11 +0900 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.4.0 Content-Language: en-US To: linux-block , Christoph Hellwig , Jan Kara , Jens Axboe From: Tetsuo Handa Subject: [PATCH 1/2] block: export task_work_add() Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org The loop driver wants to synchronously perform autoclear operation, for some userspace programs (e.g. xfstest) depend on that the autoclear operation already completes by the moment lo_release() from close() returns to userspace and immediately call umount() of a partition containing a backing file which the autoclear operation will close(). Export task_work_add() so that the loop driver can perform autoclear operation by the moment lo_release() from close() returns to userspace. Signed-off-by: Tetsuo Handa --- kernel/task_work.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/task_work.c b/kernel/task_work.c index 1698fbe6f0e1..2a1644189182 100644 --- a/kernel/task_work.c +++ b/kernel/task_work.c @@ -60,6 +60,7 @@ int task_work_add(struct task_struct *task, struct callback_head *work, return 0; } +EXPORT_SYMBOL_GPL(task_work_add); /** * task_work_cancel_match - cancel a pending work added by task_work_add()