From patchwork Wed Feb 24 14:23:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Henriques X-Patchwork-Id: 386895 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=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY, URIBL_BLOCKED autolearn=unavailable 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 26287C433E6 for ; Wed, 24 Feb 2021 15:15:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D115B60241 for ; Wed, 24 Feb 2021 15:15:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235714AbhBXPMz (ORCPT ); Wed, 24 Feb 2021 10:12:55 -0500 Received: from mx2.suse.de ([195.135.220.15]:33460 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236564AbhBXOW6 (ORCPT ); Wed, 24 Feb 2021 09:22:58 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 99E5BADCD; Wed, 24 Feb 2021 14:22:04 +0000 (UTC) Received: from localhost (brahms [local]) by brahms (OpenSMTPD) with ESMTPA id 1f03fb81; Wed, 24 Feb 2021 14:23:09 +0000 (UTC) From: Luis Henriques To: Alejandro Colomar , Michael Kerrisk , Amir Goldstein , Jeff Layton , Steve French , Miklos Szeredi , Trond Myklebust , Anna Schumaker , Alexander Viro , "Darrick J. Wong" , Dave Chinner , Greg KH , Nicolas Boichat , Ian Lance Taylor , Luis Lozano , Andreas Dilger , Olga Kornievskaia , Christoph Hellwig Cc: ceph-devel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-man@vger.kernel.org, Luis Henriques Subject: [PATCH] copy_file_range.2: Kernel v5.12 updates Date: Wed, 24 Feb 2021 14:23:07 +0000 Message-Id: <20210224142307.7284-1-lhenriques@suse.de> In-Reply-To: <20210222102456.6692-1-lhenriques@suse.de> References: <20210222102456.6692-1-lhenriques@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org Update man-page with recent changes to this syscall. Signed-off-by: Luis Henriques --- Hi! Here's a suggestion for fixing the manpage for copy_file_range(). Note that I've assumed the fix will hit 5.12. man2/copy_file_range.2 | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/man2/copy_file_range.2 b/man2/copy_file_range.2 index 611a39b8026b..b0fd85e2631e 100644 --- a/man2/copy_file_range.2 +++ b/man2/copy_file_range.2 @@ -169,6 +169,9 @@ Out of memory. .B ENOSPC There is not enough space on the target filesystem to complete the copy. .TP +.B EOPNOTSUPP +The filesystem does not support this operation. +.TP .B EOVERFLOW The requested source or destination range is too large to represent in the specified data types. @@ -187,7 +190,7 @@ refers to an active swap file. .B EXDEV The files referred to by .IR fd_in " and " fd_out -are not on the same mounted filesystem (pre Linux 5.3). +are not on the same mounted filesystem (pre Linux 5.3 and post Linux 5.12). .SH VERSIONS The .BR copy_file_range () @@ -202,6 +205,11 @@ Applications should target the behaviour and requirements of 5.3 kernels. .PP First support for cross-filesystem copies was introduced in Linux 5.3. Older kernels will return -EXDEV when cross-filesystem copies are attempted. +.PP +After Linux 5.12, support for copies between different filesystems was dropped. +However, individual filesystems may still provide +.BR copy_file_range () +implementations that allow copies across different devices. .SH CONFORMING TO The .BR copy_file_range ()