From patchwork Tue May 10 14:01:44 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Jain X-Patchwork-Id: 9058051 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 19D79BF29F for ; Tue, 10 May 2016 14:02:30 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9C8B920103 for ; Tue, 10 May 2016 14:02:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A4ADB20148 for ; Tue, 10 May 2016 14:02:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752642AbcEJOCL (ORCPT ); Tue, 10 May 2016 10:02:11 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:46546 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752224AbcEJOCJ (ORCPT ); Tue, 10 May 2016 10:02:09 -0400 Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id u4AE253B032181 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 10 May 2016 14:02:05 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by userv0022.oracle.com (8.14.4/8.13.8) with ESMTP id u4AE24co024964 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 10 May 2016 14:02:05 GMT Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by aserv0122.oracle.com (8.13.8/8.13.8) with ESMTP id u4AE224p001319; Tue, 10 May 2016 14:02:03 GMT Received: from arch2.sg.oracle.com (/10.186.101.65) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 10 May 2016 07:02:01 -0700 From: Anand Jain To: linux-btrfs@vger.kernel.org Cc: dsterba@suse.cz, yauhen.kharuzhy@zavadatar.com Subject: [PATCH] btrfs: introduce BTRFS_FEATURE_INCOMPAT_SPARE_DEV Date: Tue, 10 May 2016 22:01:44 +0800 Message-Id: <1462888911-5227-8-git-send-email-anand.jain@oracle.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1462888911-5227-1-git-send-email-anand.jain@oracle.com> References: <1462888911-5227-1-git-send-email-anand.jain@oracle.com> X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-9.0 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable 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 From: Anand Jain Add BTRFS_FEATURE_INCOMPAT_SPARE_DEV (400) flag to identify a spare device. Along with this it checks in the mount context that a spare device will fail to mount. As spare devices aren't mountable. Signed-off-by: Anand Jain Tested-by: Austin S. Hemmelgarn Tested-by: Yauhen Kharuzhy --- V6: rebase on for-next fs/btrfs/ctree.h | 3 ++- include/uapi/linux/btrfs.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 92e689787cae..728712baf5d5 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -279,7 +279,8 @@ struct btrfs_super_block { BTRFS_FEATURE_INCOMPAT_RAID56 | \ BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ - BTRFS_FEATURE_INCOMPAT_NO_HOLES) + BTRFS_FEATURE_INCOMPAT_NO_HOLES | \ + BTRFS_FEATURE_INCOMPAT_SPARE_DEV) #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h index 23c6960e94a4..c9ff6734e734 100644 --- a/include/uapi/linux/btrfs.h +++ b/include/uapi/linux/btrfs.h @@ -263,6 +263,7 @@ struct btrfs_ioctl_fs_info_args { #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) +#define BTRFS_FEATURE_INCOMPAT_SPARE_DEV (1ULL << 10) struct btrfs_ioctl_feature_flags { __u64 compat_flags;