Thread: Fix race condition in size functions

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

--
Michael Fuhr

Patch applied by Alvaro.

---------------------------------------------------------------------------

Michael Fuhr wrote:
> 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
>
> --
> Michael Fuhr

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