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Btrfs: fix missing check before disabling quota

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The original code forget to check whether quota has been disabled firstly,
and it will return 'EINVAL' and return error to users if quota has been
disabled,it will be unfriendly and confusing for users to see that.
So just return directly if quota has been disabled.

Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Cc: Arne Jansen <sensille@gmx.net>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
This commit is contained in:
Wang Shilong 2013-02-20 14:16:14 +00:00 committed by Josef Bacik
parent fa6ac8765c
commit 683cebda90
1 changed files with 4 additions and 0 deletions
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4
fs/btrfs/qgroup.c
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@ -847,6 +847,10 @@ int btrfs_quota_disable(struct btrfs_trans_handle *trans,
int ret = 0; int ret = 0;
spin_lock(&fs_info->qgroup_lock); spin_lock(&fs_info->qgroup_lock);
if (!fs_info->quota_root) {
spin_unlock(&fs_info->qgroup_lock);
return 0;
}
fs_info->quota_enabled = 0; fs_info->quota_enabled = 0;
fs_info->pending_quota_state = 0; fs_info->pending_quota_state = 0;
quota_root = fs_info->quota_root; quota_root = fs_info->quota_root;