I noticed a few other issues. Wouldn’t it be better to fix these together?
* changingPart is listed as an output parameter for table_tuple_delete(), but it looks like an input.
Fixed. changingPart is of type bool, it cannot pass out anything.
* slot is listed as an input parameter for table_tuple_update(), but it seems to be an output.
Fixed. Yes, slot will get some field assigned inside the function.
* The comment for update_indexes in table_tuple_update() is mis-indented.
Fixed. Other parameters use a tab in front, while update_indexes used two white-space in front.
* Not an issue, but it might be clearer to add a blank line between the input and output parameter comments in table_tuple_delete() and table_tuple_update().