Re: Proposal to add page headers to SLRU pages

On Fri, 2024-03-08 at 12:39 -0800, Jeff Davis wrote:
> Making a better secondary structure seems doable to me. Just to
> brainstorm:

We can also keep the group_lsns, and then just update both the CLOG
page LSN and the group_lsn when setting the transaction status. The
former would be used for all of the normal WAL-related stuff, and the
latter would be used by TransactionIdGetStatus() to return the more
precise LSN for that group.

Regards,
    Jeff Davis