From: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Date: Fri, 27 Feb 2015 08:24:26 +0000 (+0800)
Subject: btrfs: qgroup: clear STATUS_FLAG_ON in disabling quota.
X-Git-Tag: v4.1-rc1~30^2~2
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8ea0ec9e011eb542a3e7b1171776aa4877cf8a90;p=karo-tx-linux.git

btrfs: qgroup: clear STATUS_FLAG_ON in disabling quota.

we forgot to clear STATUS_FLAG_ON in quota_disable(), it
will cause a problem shown as below:

	# mount /dev/sdc /mnt
	# btrfs quota enable /mnt
	# btrfs quota disable /mnt
	# btrfs quota rescan /mnt
	quota rescan started <--- expecting it fail here.
	# echo $?
	0

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
---

diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 2e04e99f1e5b..f5f2baae7aa3 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -966,6 +966,7 @@ int btrfs_quota_disable(struct btrfs_trans_handle *trans,
 	fs_info->pending_quota_state = 0;
 	quota_root = fs_info->quota_root;
 	fs_info->quota_root = NULL;
+	fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_ON;
 	spin_unlock(&fs_info->qgroup_lock);
 
 	btrfs_free_qgroup_config(fs_info);