Re: visibility maps and heap_prune

Whatever happened to this?  It was in the first 9.0 commitfest but was
returned with feedback but never updated:
https://commitfest.postgresql.org/action/patch_view?id=75

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Pavan Deolasee wrote:
> ISTM that the PD_ALL_VISIBLE flag and the visibility map bit can be set at
> the end of pruning operation if we know that there are only tuples visible
> to all transactions left in the page. The way pruning is done, I think it
> would be straight forward to get this information.
> 
> Thanks,
> Pavan
> 
> -- 
> Pavan Deolasee
> EnterpriseDB     http://www.enterprisedb.com

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