On 10 July 2015 at 09:49, Sawada Masahiko <sawada.m...@gmail.com> wrote:
> > > It is a minor thing, but if there is no other use for this fourth > > "bit-space", it seems a shame to waste it when there is some use for > it. I > > haven't looked at the code around this area to know how hard it would be > to > > implement the setting and clearing of the bit. > > I think so too, we would be able to use unused fourth status of bits > efficiently. > Should I include these improvement into this patch? > This topic should be discussed on another thread after this feature is > committed, I think. > The impossible state acts as a diagnostic check for us to ensure the bitmap is not itself corrupt. -1 for using it for another purpose. -- Simon Riggs http://www.2ndQuadrant.com/ <http://www.2ndquadrant.com/> PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
