Re: pgsql: Allow to trigger kernel writeback after a configurable number of

Andres Freund <andres@anarazel.de> writes:
> This broke gaur:
> http://pgbuildfarm.org/cgi-bin/show_log.pl?nm=gaur&dt=2016-03-12%2005%3A44%3A25
> I'm planning to add a #ifndef MAP_FAILED #define MAP_FAILED ((void*)
> (-1)).

We already have that in portability/mem.h.  Did you add a use of the
symbol someplace that doesn't include that header?

            regards, tom lane