From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp1040.oracle.com ([156.151.31.81]:25005 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752350AbcDRLcV (ORCPT ); Mon, 18 Apr 2016 07:32:21 -0400 From: Anand Jain To: linux-btrfs@vger.kernel.org Cc: dsterba@suse.cz, yauhen.kharuzhy@zavadatar.com Subject: [PATCH 06/13] btrfs: introduce BTRFS_FEATURE_INCOMPAT_SPARE_DEV Date: Mon, 18 Apr 2016 19:31:37 +0800 Message-Id: <1460979104-27497-7-git-send-email-anand.jain@oracle.com> In-Reply-To: <1460979104-27497-1-git-send-email-anand.jain@oracle.com> References: <1460979104-27497-1-git-send-email-anand.jain@oracle.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: 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 --- fs/btrfs/ctree.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index e0a50f478e01..2c185a8e92f0 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -531,6 +531,7 @@ struct btrfs_super_block { #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) #define BTRFS_FEATURE_COMPAT_SUPP 0ULL #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL @@ -551,7 +552,8 @@ 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) -- 2.7.0