Btrfs: remove reduplicate check when disabling quota

We have checked 'quota_root' with qgroup_ioctl_lock held before,So
here the check is reduplicate, remove it.

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Reviewed-by: Miao Xie <miaox@cn.fujitsu.com>
Reviewed-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 01eeffe9ae537fc8b9210c0065c23c9ffa5166be..66c58e120b2c661e657859e9fead7942c6f6d2da 100644 (file)
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -943,11 +943,6 @@ int btrfs_quota_disable(struct btrfs_trans_handle *trans,
 
        btrfs_free_qgroup_config(fs_info);
 
-       if (!quota_root) {
-               ret = -EINVAL;
-               goto out;
-       }
-
        ret = btrfs_clean_quota_tree(trans, quota_root);
        if (ret)
                goto out;