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Date: Tue, 26 Apr 2016 11:55:52 +0200
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Rich Felker <dalias@libc.org>
Cc: linux-kernel@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
        Davidlohr Bueso <dave@stgolabs.net>, Ingo Molnar <mingo@kernel.org>,
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        Geert Uytterhoeven <geert@linux-m68k.org>,
        Yoshinori Sato <ysato@users.sourceforge.jp>
Subject: Re: [PATCH] futex: fix shared futex operations on nommu
Message-ID: <20160426095552.GB8295@linutronix.de>
References: <20160426010303.GA3706@brightrain.aerifal.cx>
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* Rich Felker | 2016-04-25 21:03:03 [-0400]:

>The shared get_futex_key code does not work on nommu, but is not
>needed anyway because it's impossible for a given backing to have
>multiple distinct virtual addresses on nommu. Simply disable these
>code paths by refraining from setting FLAG_SHARED when CONFIG_MMU is
>not enabled.

by disabling it you are not fixing it.
Why isn't it working? Why does it pop up now and not earlier?

Sebastian