diff mbox

Btrfs: disable qgroup id 0

Message ID 50A4D38D.6080107@cn.fujitsu.com (mailing list archive)
State New, archived
Headers show

Commit Message

Miao Xie Nov. 15, 2012, 11:35 a.m. UTC 
Qgroup id 0 is a special number, we should set the id of a qgroup to 0.
Fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
---
 fs/btrfs/ioctl.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox

Patch

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 8e5b7fa..922a33a 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -3574,6 +3574,11 @@  static long btrfs_ioctl_qgroup_create(struct btrfs_root *root, void __user *arg)
 	if (IS_ERR(sa))
 		return PTR_ERR(sa);
 
+	if (!sa->qgroupid) {
+		ret = -EINVAL;
+		goto out;
+	}
+
 	trans = btrfs_join_transaction(root);
 	if (IS_ERR(trans)) {
 		ret = PTR_ERR(trans);