linux-kernel - Question about futex

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Message-ID: <5325f4ea.e109350a.0fe4.66f2@mx.google.com>
Date:	Sun, 16 Mar 2014 15:00:45 -0400
From:	Ryan Nicholl <r.p.nicholl.linux@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	r.p.nicholl@...il.com
Subject: Question about futex

I'm wondering why we have no 64 bit futex? (unless it was added since my kernel.)

I would like to wait on a pointer, right now I have a timeout to avoid deadlock if only the upper half is changed during a race, but this is highly sub-optimal for me.