Log Message:
-----------
Add description:
>
> O_DIRECT doesn't have the same media write guarantees as fsync, so it
> is in addition to the fsync method, not in place of it.
>
Modified Files:
--------------
pgsql/doc:
TODO (r1.1544 -> r1.1545)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1544&r2=1.1545)
pgsql/doc/src/FAQ:
TODO.html (r1.51 -> r1.52)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.51&r2=1.52)