Re: crash-safe visibility map, take three

Robert Haas <robertmhaas@gmail.com> writes:
> Or maybe I do.  One other thing I've been thinking about with regard
> to hint bit updates is that we might choose to mark that are
> hint-bit-updated as "untidy" rather than "dirty".  The background

Please review archives, you'll find the idea discussed and some patches
to implement it, by Simon. I suppose you could begin here:
 http://archives.postgresql.org/pgsql-patches/2008-06/msg00113.php

Regards,  
-- 
Dimitri Fontaine
http://2ndQuadrant.fr     PostgreSQL : Expertise, Formation et Support