*
  * @trans: transaction whose dirty pages we'd like to write
  */
-static int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
-                                           struct btrfs_fs_info *fs_info)
+static int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans)
 {
        int ret;
        int ret2;
        struct extent_io_tree *dirty_pages = &trans->transaction->dirty_pages;
+       struct btrfs_fs_info *fs_info = trans->fs_info;
        struct blk_plug plug;
 
        blk_start_plug(&plug);
        if (ret)
                goto out;
        switch_commit_roots(trans->transaction);
-       ret = btrfs_write_and_wait_transaction(trans, fs_info);
+       ret = btrfs_write_and_wait_transaction(trans);
        if (ret)
                btrfs_handle_fs_error(fs_info, ret,
                        "Error while writing out transaction for qgroup");
 
        wake_up(&fs_info->transaction_wait);
 
-       ret = btrfs_write_and_wait_transaction(trans, fs_info);
+       ret = btrfs_write_and_wait_transaction(trans);
        if (ret) {
                btrfs_handle_fs_error(fs_info, ret,
                                      "Error while writing out transaction");