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>
(cherry picked from commit e082f56313f374d723b0366978ddb062c8fe79ea)

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 8bb6fb073a25e679db08c6df698c85361e1bf067..fc44640ba9a1002caab29e52eea83adb30a867d3 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;