From patchwork Fri May 18 21:57:27 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Fasheh X-Patchwork-Id: 10412355 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3516C60230 for ; Fri, 18 May 2018 21:57:55 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 247C428A7C for ; Fri, 18 May 2018 21:57:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 191DD28AA7; Fri, 18 May 2018 21:57:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B373F28A7C for ; Fri, 18 May 2018 21:57:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752022AbeERV5u (ORCPT ); Fri, 18 May 2018 17:57:50 -0400 Received: from mx2.suse.de ([195.135.220.15]:56694 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750763AbeERV5r (ORCPT ); Fri, 18 May 2018 17:57:47 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 751EFAEA1; Fri, 18 May 2018 21:57:45 +0000 (UTC) From: Mark Fasheh To: linux-fsdevel@vger.kernel.org Cc: linux-btrfs@vger.kernel.org, linux-xfs@vger.kernel.org, "Darrick J . Wong" , Adam Borowski , Mark Fasheh Subject: [PATCH v2 2/2] vfs: dedupe should return EPERM if permission is not granted Date: Fri, 18 May 2018 14:57:27 -0700 Message-Id: <20180518215727.26418-3-mfasheh@suse.de> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180518215727.26418-1-mfasheh@suse.de> References: <20180518215727.26418-1-mfasheh@suse.de> Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Right now we return EINVAL if a process does not have permission to dedupe a file. This was an oversight on my part. EPERM gives a true description of the nature of our error, and EINVAL is already used for the case that the filesystem does not support dedupe. Signed-off-by: Mark Fasheh Reviewed-by: Darrick J. Wong Acked-by: David Sterba --- fs/read_write.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/read_write.c b/fs/read_write.c index cbea4ce58ad1..2238928ca819 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -2050,7 +2050,7 @@ int vfs_dedupe_file_range(struct file *file, struct file_dedupe_range *same) if (info->reserved) { info->status = -EINVAL; } else if (!allow_file_dedupe(dst_file)) { - info->status = -EINVAL; + info->status = -EPERM; } else if (file->f_path.mnt != dst_file->f_path.mnt) { info->status = -EXDEV; } else if (S_ISDIR(dst->i_mode)) {