Heikki Linnakangas wrote:
> Tom Lane wrote:
>> I'm not sure whether I like your flag approach better than the
>> last-used-offset one. The previous patch probably buys some teeny
>> amount more performance, but the flag seems more robust (noting in
>> passing that neither patch attempts to WAL-log its changes, so we really
>> need to treat the values as hints). And a change as sketched here would
>> leave us 15 free bits for future expansion, which might be nice.
>
> I'll post a patch along those lines.

Here it is.

I'm not fond of the macro names for the flag, but couldn't think of
anything shorter yet descriptive.

--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com


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