From: Jan Kaluza <redacted>
Date: Mon, 13 Jan 2014 09:01:46 +0100

Changes introduced in this patchset can also increase performance
of such server-like processes, because current way of opening and
parsing /proc/$PID/* files is much more expensive than receiving these
metadata using SCM.

The problem with this line of reasoning is that these changes will
hurt everyone else, because these new control messages are sent
unconditionally, whether the application is interested in them or not.

I really don't like this cost tradeoff, it's terrible, and therefore
I'm really not inclined to apply these patches, sorry.