btrfs: quota: Update quota tree after qgroup relationship change.

Previous patch modified the in memory struct but it's not written in
quota tree until next commit.
So user will still get old data using "btrfs qgroup show" after
assign/remove.

This patch will call btrfs_run_qgroups in assign ioctl so it will be
updated to in memory quota trees and user will get up-to-date results.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index e38b645c50151f1f0c376743cf00da0a01098525..ca5d968f4c37f6adbb460f5de46aad86d0101b61 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -4641,6 +4641,11 @@ static long btrfs_ioctl_qgroup_assign(struct file *file, void __user *arg)
                                                sa->src, sa->dst);
        }
 
+       /* update qgroup status and info */
+       err = btrfs_run_qgroups(trans, root->fs_info);
+       if (err < 0)
+               btrfs_error(root->fs_info, ret,
+                           "failed to update qgroup status and info\n");
        err = btrfs_end_transaction(trans, root);
        if (err && !ret)
                ret = err;