ntfs_ie_get_by_pos
ie_node = ntfs_ie_get_by_pos(ih, pos);
ie = ntfs_ie_get_by_pos(ih, ntfs_icx_parent_pos(icx));
ie = ntfs_ie_get_by_pos(parent_ih, ntfs_icx_parent_pos(icx));
entry = ntfs_ie_get_by_pos(ih, entry_pos);
entry = ntfs_ie_get_by_pos(
entry = ntfs_ie_get_by_pos(