Hi hackers,
> > I suggest we focus on saving the memory first and then think about the
> > performance, if necessary.
>
> +1
I made a mistake in v3 cfbot complained about. It should have been:
```
if (RelFileNumberIsValid(BufTagGetRelNumber(&bufHdr->tag)))
```
Here is the corrected patch.
--
Best regards,
Aleksander Alekseev