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Date: Wed, 13 May 2015 10:55:56 +0200
From: David Hildenbrand <dahi@linux.vnet.ibm.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Subject: Re: [PATCH v1 11/15] arm/futex: UP futex_atomic_op_inuser() relies
 on disabled preemption
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> * David Hildenbrand | 2015-05-13 09:38:12 [+0200]:
> 
> >Thanks, I'll include it in the next version.
> >
> >So I assume the cleanest thing to do would be:
> >
> >#if __LINUX_ARM_ARCH__ < 6
> >	preempt_disable();
> >#endif
> 
> Correct. But also for futex_atomic_cmpxchg_inatomic() which also behind
> CONFIG_SMP curtain. That is why I suggested a new patch :)
> 
> >David
> 
> Sebastian

Ah, okay I think now I got it :)

So both patches are fine for now, but we should replace CONFIG_SMP
by __LINUX_ARM_ARCH__ >=6 in both file, not only in the code I touch (to make
it map arch/arm/include/asm/cmpxchg.h style).

David