From patchwork Wed Oct 24 19:58:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Olga Kornievskaia X-Patchwork-Id: 988775 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-cifs-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="jb0CWUnp"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 42gLfv4cvGz9sDr for ; Thu, 25 Oct 2018 06:58:47 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727369AbeJYE2M (ORCPT ); Thu, 25 Oct 2018 00:28:12 -0400 Received: from mail-qt1-f195.google.com ([209.85.160.195]:44736 "EHLO mail-qt1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726264AbeJYE2L (ORCPT ); Thu, 25 Oct 2018 00:28:11 -0400 Received: by mail-qt1-f195.google.com with SMTP id o17-v6so1409283qtq.11; Wed, 24 Oct 2018 12:58:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=D3Oki5BmKEd8nnsyx5CzmdHvMrAIdEpQvYy6/1wa7ko=; b=jb0CWUnpA+Q1EPxxDQdk98QHV1OqqAEJQScocoKZMks9O2+VTMGD56MZS3Hv78yGqm ZheLtgj6XnlcjevVWnxydz+nBY8GSOMQw5zcQDseBBJ3Vc9JURMty2KlfIko8XEREVkZ zHzCxzDxvHW9UHkamJenSAEoc2X/2hBBp+BHXJCfkLJt5ka4gK7C/p1eeHcDOGGeRiSV POfU0BKMhbSeVk4BJYPs5r8bHPGyTcNSihG5GNaMibhzT2OsccpjcvDvnXhASekV73Fm x16buNRIWLNjL8jViPycQXsxF1crLDlGeMdeF56VxxtcszyB112LCRe+Mk/ayvww0d4y x4iw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=D3Oki5BmKEd8nnsyx5CzmdHvMrAIdEpQvYy6/1wa7ko=; b=HuadWFsYurlChmGyJICT9EJC5NqFkFQ4tTfzuO3pkI2Nc5LrSyAIir0ZtEWd20iYH9 GIKRn5fYmT38skNXhgRGU2Lu0Qlc7Bkxao1AdnAkVTVFhw5BJvwScXJNZdIhFkOxXoHz i+I7EFAQ2FTtti7oGzNzczsK7mTDOkgJGrOdf2kbv9fFC2rUAnPRKcU2qMsvvCOM4op+ rMhjHIKM2IEdbIRrQavYrtNCc6xllcC4F39L3+KWbILoebKXaQVwDRxYXW146Mkauob/ KgX+zAYQkuQ+8fd+pQzgUWDiKlBzN49HA/OzUfxeRTXXG9jOuUN1M6Djj7NFL1P4x3tH s8AA== X-Gm-Message-State: AGRZ1gJ6gpAT2bVgLpS9XyP95HVeCf5AZz7AnR+DhWGRLS0ij2RMAeYb jhCSJcZhRP2I6quRHTuVgeU= X-Google-Smtp-Source: AJdET5eAH7+PcHTv/btAPvMM9L283QOjCm3exyEBenGY7N7+Lv6PP6xR6lN4ZArSM7wKPIVXbla5vw== X-Received: by 2002:aed:33a7:: with SMTP id v36-v6mr3326728qtd.267.1540411124255; Wed, 24 Oct 2018 12:58:44 -0700 (PDT) Received: from Olgas-MBP-195.attlocal.net (172-10-226-31.lightspeed.livnmi.sbcglobal.net. [172.10.226.31]) by smtp.gmail.com with ESMTPSA id d124-v6sm3872380qkf.85.2018.10.24.12.58.43 (version=TLS1 cipher=AES128-SHA bits=128/128); Wed, 24 Oct 2018 12:58:43 -0700 (PDT) From: Olga Kornievskaia To: trond.myklebust@hammerspace.com, anna.schumaker@netapp.com, viro@zeniv.linux.org.uk, smfrench@gmail.com, miklos@szeredi.hu Cc: linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-cifs@vger.kernel.org, linux-unionfs@vger.kernel.org, linux-man@vger.kernel.org Subject: [PATCH v2 02/13] CIFS: add cross-device check for copy_file_range Date: Wed, 24 Oct 2018 15:58:26 -0400 Message-Id: <20181024195837.35532-4-olga.kornievskaia@gmail.com> X-Mailer: git-send-email 2.10.1 (Apple Git-78) In-Reply-To: <20181024195837.35532-1-olga.kornievskaia@gmail.com> References: <20181024195837.35532-1-olga.kornievskaia@gmail.com> Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org From: Olga Kornievskaia VFS copy_file_range was relaxed to allow for cross-device copy. Add a check for now, to disallow cross-device copy offload until appropriate support is added. Signed-off-by: Olga Kornievskaia --- fs/cifs/cifsfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 7065426..1f41e74 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -1114,6 +1114,8 @@ static ssize_t cifs_copy_file_range(struct file *src_file, loff_t off, unsigned int xid = get_xid(); ssize_t rc; + if (src_file->f_inode->i_sb != dst_file->f_inode->i_sb) + return -EXDEV; rc = cifs_file_copychunk_range(xid, src_file, off, dst_file, destoff, len, flags); free_xid(xid);