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 X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3CBD4C433DF for ; Thu, 25 Jun 2020 23:37:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0ECE62084D for ; Thu, 25 Jun 2020 23:37:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593128255; bh=XPRK0sq0Rv/u4HT/KZE++IRrJWscCGZFPdc0LLn7yJ4=; h=From:To:Cc:Subject:Date:List-ID:From; b=UrRYYF0MpISGQsOSj79pOJJAWMlWpYg4mlEiHmYLQEjN7qZEeuogYY4Uk+MYB3Sx8 LR4T4i7cuM3QJj0jH2cIbGKOlObjn8aCZc/5gOjjcLB3RTlOB2ylRzIBjh1/UG5cS9 3Hhkyik8f6Ab5zVPKrgHKqZzocesoaPTxPkbCrlQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726177AbgFYXhe (ORCPT ); Thu, 25 Jun 2020 19:37:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:42162 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725834AbgFYXhe (ORCPT ); Thu, 25 Jun 2020 19:37:34 -0400 Received: from tleilax.com (68-20-15-154.lightspeed.rlghnc.sbcglobal.net [68.20.15.154]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 008652084D; Thu, 25 Jun 2020 23:37:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593128253; bh=XPRK0sq0Rv/u4HT/KZE++IRrJWscCGZFPdc0LLn7yJ4=; h=From:To:Cc:Subject:Date:From; b=H+OacQV4B6rSiPM6i7vxqwJNYLit5laXMLXIrKiutIqIgWiNcfJv9bDeME2SxDSKX 65gr6qKqOguPP+HBR0Uzve0q0x7aYJWyqjfYNWzteAR9EjK21EuJixh4hDk/uQtw8E lakz1y711WfQxXekCriyRE8M23FYwtBi85CUizZs= From: Jeff Layton To: mtk.manpages@gmail.com Cc: linux-man@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, ebiggers@kernel.org Subject: [PATCH v2] sync.2: syncfs() now returns errors if writeback fails Date: Thu, 25 Jun 2020 19:37:31 -0400 Message-Id: <20200625233731.61555-1-jlayton@kernel.org> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-man-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org A patch has been merged for v5.8 that changes how syncfs() reports errors. Change the sync() manpage accordingly. Signed-off-by: Jeff Layton --- man2/sync.2 | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) v2: update the NOTES verbiage according to Eric's suggestion diff --git a/man2/sync.2 b/man2/sync.2 index 7198f3311b05..61e994c5affc 100644 --- a/man2/sync.2 +++ b/man2/sync.2 @@ -86,11 +86,26 @@ to indicate the error. is always successful. .PP .BR syncfs () -can fail for at least the following reason: +can fail for at least the following reasons: .TP .B EBADF .I fd is not a valid file descriptor. +.TP +.B EIO +An error occurred during synchronization. +This error may relate to data written to any file on the filesystem, or on +metadata related to the filesytem itself. +.TP +.B ENOSPC +Disk space was exhausted while synchronizing. +.TP +.BR ENOSPC ", " EDQUOT +Data was written to a files on NFS or another filesystem which does not +allocate space at the time of a +.BR write (2) +system call, and some previous write failed due to insufficient +storage space. .SH VERSIONS .BR syncfs () first appeared in Linux 2.6.39; @@ -121,6 +136,13 @@ or .BR syncfs () provide the same guarantees as fsync called on every file in the system or filesystem respectively. +.PP +In mainline kernel versions prior to 5.8, +.\" commit 735e4ae5ba28c886d249ad04d3c8cc097dad6336 +.BR syncfs () +will only fail when passed a bad file descriptor (EBADF). In 5.8 +and later kernels, it will also report an error if one or more inodes failed +to be written back since the last syncfs call. .SH BUGS Before version 1.3.20 Linux did not wait for I/O to complete before returning. -- 2.26.2