On Friday, May 24, 2013 2:47 AM Jim Nasby wrote: > On 5/14/13 2:13 PM, Greg Smith wrote: > > It is possible that we are told to put something in the freelist that > > is already in it; don't screw up the list if so. > > > > I don't see where the code does anything to handle that though. What > was your intention here? > > IIRC, the code that pulls from the freelist already deals with the > possibility that a block was on the freelist but has since been put to > use.
You are right, the check exists in StrategyGetBuffer() >If that's the case then there shouldn't be much penalty to adding > a block multiple times (at least within reason...) There is a check in StrategyFreeBuffer() which will not allow to put multiple times, I had just used the same check in new function. With Regards, Amit Kapila. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
