From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp1040.oracle.com ([156.151.31.81]:48431 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932348AbcDBBb2 (ORCPT ); Fri, 1 Apr 2016 21:31:28 -0400 From: Anand Jain To: linux-btrfs@vger.kernel.org Cc: yauhen.kharuzhy@zavadatar.com, dsterba@suse.cz Subject: [PATCH 08/13] btrfs: support btrfs dev scan for spare device Date: Sat, 2 Apr 2016 09:30:46 +0800 Message-Id: <1459560651-14809-9-git-send-email-anand.jain@oracle.com> In-Reply-To: <1459560651-14809-1-git-send-email-anand.jain@oracle.com> References: <1459560651-14809-1-git-send-email-anand.jain@oracle.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: When the user or system calls the BTRFS_IOC_SCAN_DEV, ioctl this patch will make sure it is added to the device list and set it as spare. This operation will be same when BTRFS_IOC_DEVICES_READY as well since BTRFS_IOC_DEVICES_READY ioctl has been doing that by legacy. Signed-off-by: Anand Jain Tested-by: Austin S. Hemmelgarn --- fs/btrfs/volumes.c | 4 ++++ fs/btrfs/volumes.h | 2 ++ 2 files changed, 6 insertions(+) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index dff2deaf88d3..d729539f9612 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -604,6 +604,10 @@ static noinline int device_list_add(const char *path, if (IS_ERR(fs_devices)) return PTR_ERR(fs_devices); + if (btrfs_super_incompat_flags(disk_super) & + BTRFS_FEATURE_INCOMPAT_SPARE_DEV) + fs_devices->spare = 1; + list_add(&fs_devices->list, &fs_uuids); device = NULL; diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 48ced5cc09e4..51cf716eb35b 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -263,6 +263,8 @@ struct btrfs_fs_devices { struct kobject fsid_kobj; struct kobject *device_dir_kobj; struct completion kobj_unregister; + + int spare; }; #define BTRFS_BIO_INLINE_CSUM_SIZE 64 -- 2.7.0