Btrfs: hooks for qgroup to record delayed refs

Hooks into qgroup code to record refs and into transaction commit.
This is the main entry point for qgroup. Basically every change in
extent backrefs got accounted to the appropriate qgroups.

Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index d20d2e24f8d..21c768cb443 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -795,6 +795,13 @@ static noinline int commit_cowonly_roots(struct btrfs_trans_handle *trans,
         ret = btrfs_run_dev_stats(trans, root->fs_info);
         BUG_ON(ret);
 
+        ret = btrfs_run_qgroups(trans, root->fs_info);
+        BUG_ON(ret);
+
+        /* run_qgroups might have added some more refs */
+        ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);
+        BUG_ON(ret);
+
         while (!list_empty(&fs_info->dirty_cowonly_roots)) {
                 next = fs_info->dirty_cowonly_roots.next;
                 list_del_init(next);