From mboxrd@z Thu Jan 1 00:00:00 1970 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 20792C83F14 for ; Sun, 27 Aug 2023 13:36:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230494AbjH0Nfs (ORCPT ); Sun, 27 Aug 2023 09:35:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37058 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230513AbjH0Nf0 (ORCPT ); Sun, 27 Aug 2023 09:35:26 -0400 Received: from out-251.mta1.migadu.com (out-251.mta1.migadu.com [95.215.58.251]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB1A111C; Sun, 27 Aug 2023 06:35:09 -0700 (PDT) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1693143308; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=y42FYySYNsis5G3mORomW/nSivl81IaFtk7YSUfz0Jg=; b=S4P5Lis+5UgxAXsbIFEQ0bJcfwW5bp3gD+5EV25w4Odl6XRzUJpaJGVaokRckJ9Hpyff0y QCMWQ876jzpmtvZlXQ4fdJDhdeygghENaAwk2aokCERTn3SKcsNlbNr+KPD/7nkWidZUEs LZ/LAlKjzWeA2HQHZTdX8ZHXdvIJ060= From: Hao Xu To: io-uring@vger.kernel.org, Jens Axboe Cc: Dominique Martinet , Pavel Begunkov , Christian Brauner , Alexander Viro , Stefan Roesch , Clay Harris , Dave Chinner , "Darrick J . Wong" , linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-cachefs@redhat.com, ecryptfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-unionfs@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org, codalist@coda.cs.cmu.edu, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-mm@kvack.org, linux-nilfs@vger.kernel.org, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-mtd@lists.infradead.org, Wanpeng Li Subject: [PATCH 09/11] vfs: error out -EAGAIN if atime needs to be updated Date: Sun, 27 Aug 2023 21:28:33 +0800 Message-Id: <20230827132835.1373581-10-hao.xu@linux.dev> In-Reply-To: <20230827132835.1373581-1-hao.xu@linux.dev> References: <20230827132835.1373581-1-hao.xu@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org From: Hao Xu To enforce nowait semantics, error out -EAGAIN if atime needs to be updated. Signed-off-by: Hao Xu --- fs/inode.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/inode.c b/fs/inode.c index e83b836f2d09..32d81be65cf9 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1970,6 +1970,9 @@ int touch_atime(const struct path *path, bool nowait) if (!atime_needs_update(path, inode)) return 0; + if (nowait) + return -EAGAIN; + if (!sb_start_write_trylock(inode->i_sb)) return 0; -- 2.25.1