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Btrfs: use tree_root to avoid edquot when disabling quota

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Steps to reproduce:
	mkfs.btrfs <disk>
	mount <disk> <mnt>
	btrfs quota enable <mnt>
	btrfs sub create <mnt>/subv
	btrfs qgroup limit 10K <mnt>/subv
	btrfs quota disable <mnt>/subv

It is wrong for qgroup to reserve when disabling quota,
so just use tree_root to avoid edquot when disabling quota.

Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
This commit is contained in:
Wang Shilong 2013-04-08 10:56:22 +00:00 committed by Josef Bacik
parent ddb47afa50
commit 92f183aa5b
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/ioctl.c
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@ -3699,7 +3699,7 @@ static long btrfs_ioctl_quota_ctl(struct file *file, void __user *arg)
down_write(&root->fs_info->subvol_sem);
if (sa->cmd != BTRFS_QUOTA_CTL_RESCAN) {
trans = btrfs_start_transaction(root, 2);
trans = btrfs_start_transaction(root->fs_info->tree_root, 2);
if (IS_ERR(trans)) {
ret = PTR_ERR(trans);
goto out;
@ -3725,7 +3725,7 @@ static long btrfs_ioctl_quota_ctl(struct file *file, void __user *arg)
ret = -EFAULT;
if (trans) {
err = btrfs_commit_transaction(trans, root);
err = btrfs_commit_transaction(trans, root->fs_info->tree_root);
if (err && !ret)
ret = err;
}