Function tree_stats_collect 

pub fn tree_stats_collect<R: Read + Seek>(
    reader: &mut BlockReader<R>,
    root_logical: u64,
    find_inline: bool,
) -> Result<TreeStats>

Walk root_logical collecting TreeStats.

When find_inline is true the walk also counts inline extent data bytes (relevant for subvolume / FS trees which contain EXTENT_DATA items).

Errors

Returns an error if any tree block cannot be read.