From patchwork Tue May 6 06:33:24 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 4118981 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id CC18C9F1E1 for ; Tue, 6 May 2014 06:32:28 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0169C201EF for ; Tue, 6 May 2014 06:32:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3732A201ED for ; Tue, 6 May 2014 06:32:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934016AbaEFGcY (ORCPT ); Tue, 6 May 2014 02:32:24 -0400 Received: from cn.fujitsu.com ([59.151.112.132]:20016 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S933953AbaEFGcX (ORCPT ); Tue, 6 May 2014 02:32:23 -0400 X-IronPort-AV: E=Sophos;i="4.97,994,1389715200"; d="scan'208";a="30122624" Received: from unknown (HELO edo.cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 06 May 2014 14:29:51 +0800 Received: from G08CNEXCHPEKD03.g08.fujitsu.local (localhost.localdomain [127.0.0.1]) by edo.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id s466WKSr025169 for ; Tue, 6 May 2014 14:32:20 +0800 Received: from adam-work.lan (10.167.226.24) by G08CNEXCHPEKD03.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.146.2; Tue, 6 May 2014 14:32:27 +0800 From: Qu Wenruo To: Subject: [RFC PATCH 1/2] btrfs-progs: Follow kernel changes to add new member of btrfs_ioctl_dev_info_args. Date: Tue, 6 May 2014 14:33:24 +0800 Message-ID: <1399358005-9780-1-git-send-email-quwenruo@cn.fujitsu.com> X-Mailer: git-send-email 1.9.2 MIME-Version: 1.0 X-Originating-IP: [10.167.226.24] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Follow the kernel header changes to add new member of btrfs_ioctl_dev_info_args. This change will use special bit to keep backward compatibility, so even on old kernels this will not screw anything up. Signed-off-by: Qu Wenruo --- ioctl.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/ioctl.h b/ioctl.h index 9627e8d..672a3a3 100644 --- a/ioctl.h +++ b/ioctl.h @@ -156,12 +156,15 @@ struct btrfs_ioctl_dev_replace_args { __u64 spare[64]; }; +#define BTRFS_IOCTL_DEV_INFO_MISSING (1ULL<<0) +#define BTRFS_IOCTL_DEV_INFO_FLAG_SET (1ULL<<63) struct btrfs_ioctl_dev_info_args { __u64 devid; /* in/out */ __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ __u64 bytes_used; /* out */ __u64 total_bytes; /* out */ - __u64 unused[379]; /* pad to 4k */ + __u64 flags; /* out */ + __u64 unused[378]; /* pad to 4k */ __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ };