sem_trywait changes broke sparc

[David Miller]

From: Torvald Riegel <triegel@redhat.com>
Date: Mon, 26 Jan 2015 13:20:12 +0100

> Regarding your statement that this was committed late: This patch was
> first posted on Dec 5.  While I didn't CC you explicitly (which I should
> have done I guess), I pointed out the sparc issue in the email:

During %90 of this time, the tree didn't even build for sparc.  It
finally was usable for a brief day or two until this change was
installed.  I didn't work on it, nor look into it, because it was
simply not possible to test or work on anything during this time.

And now I'm behind the eight ball again, because of changes installed
by other people.  Something has to break this cycle in order for me to
be able to do useful work.