_pt_top_range
range = _pt_top_range(common,
_pt_top_range(common, new_top_of_table);
return _pt_top_range(common, READ_ONCE(common->top_of_table));
_pt_top_range(common, READ_ONCE(common->top_of_table));
struct pt_range range = _pt_top_range(common, top_of_table);