Log Message:
-----------
Fix a race condition that caused pg_database_size() and pg_tablespace_size()
to fail if an object was removed between calls to ReadDir() and stat().
Per discussion in pgsql-hackers.
http://archives.postgresql.org/pgsql-hackers/2007-03/msg00671.php
Bug report and patch by Michael Fuhr.
Modified Files:
--------------
pgsql/src/backend/utils/adt:
dbsize.c (r1.11 -> r1.12)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/dbsize.c.diff?r1=1.11&r2=1.12)