The fs_info can be fetched from the transaction handle directly.
Signed-off-by: Lu Fengqi <lufq.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
                }
 
                if (need_account) {
-                       ret = btrfs_qgroup_trace_subtree(trans, root, next,
+                       ret = btrfs_qgroup_trace_subtree(trans, next,
                                                         generation, level - 1);
                        if (ret) {
                                btrfs_err_rl(fs_info,
 
 }
 
 int btrfs_qgroup_trace_subtree(struct btrfs_trans_handle *trans,
-                              struct btrfs_root *root,
                               struct extent_buffer *root_eb,
                               u64 root_gen, int root_level)
 {
-       struct btrfs_fs_info *fs_info = root->fs_info;
+       struct btrfs_fs_info *fs_info = trans->fs_info;
        int ret = 0;
        int level;
        struct extent_buffer *eb = root_eb;
 
  * Return <0 for error(ENOMEM or tree search error)
  */
 int btrfs_qgroup_trace_subtree(struct btrfs_trans_handle *trans,
-                              struct btrfs_root *root,
                               struct extent_buffer *root_eb,
                               u64 root_gen, int root_level);
 int
 
                 *    and tree block numbers, if current trans doesn't free
                 *    data reloc tree inode.
                 */
-               ret = btrfs_qgroup_trace_subtree(trans, src, parent,
+               ret = btrfs_qgroup_trace_subtree(trans, parent,
                                btrfs_header_generation(parent),
                                btrfs_header_level(parent));
                if (ret < 0)
                        break;
-               ret = btrfs_qgroup_trace_subtree(trans, dest,
-                               path->nodes[level],
+               ret = btrfs_qgroup_trace_subtree(trans, path->nodes[level],
                                btrfs_header_generation(path->nodes[level]),
                                btrfs_header_level(path->nodes[level]));
                if (ret < 0)