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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 35162C83F12 for ; Sun, 27 Aug 2023 13:35:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=qHxQgM5t4m/an/sIoM74SLglVoR9vQ2AZ6WiR80wiDk=; b=3OtmIinMJHB555 30IidzFodtzXu3npp9SrTU8Zhq/wNR1bA7+SNQ//8d45A0uCzol3CnaaA04dx7cz8Q2X7HPs+AB0R VXG58oIY3mAeVAVLKIHahXU4YlpBnp/UK/nTot3uiRXHHU8drAu6AgWHPvJO765ASAsUOHRdz/sQe 8Yp0ognhxy7VHB0GDm5Kv637F7nPvupYFRTC7yfL8fodaW8l903riztfFx1PwvREWVj1+n8WBIE4/ GtpgOBYZsBQqin/1cW/CeEjhXa7hqY8wwAKUe4oSU47fWVtS/Jdk1reNLIdbRpYYIZcXTWXeyhV/P uDOaa38C2g71mKiJIcUQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qaFv7-0086Pm-0T; Sun, 27 Aug 2023 13:35:13 +0000 Received: from out-248.mta1.migadu.com ([95.215.58.248]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qaFv4-0086Oe-1k for linux-mtd@lists.infradead.org; Sun, 27 Aug 2023 13:35:11 +0000 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 X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230827_063510_725940_D0AAB7BA X-CRM114-Status: UNSURE ( 7.19 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.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 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/