pgsql: pg_test_fsync: add C comment about direct I/O and write size fai

pg_test_fsync: add C comment about direct I/O and write size failure

Report from Marti Raudsepp

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/f9bb944cd879949cf454b941f2b8fa7b00fcc1e4

Modified Files
--------------
contrib/pg_test_fsync/pg_test_fsync.c | 6 ++++++
1 file changed, 6 insertions(+)

--
Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-committers