Re: [PATCH v2 optional 3/3] mutex: back out architecture specificcheck for negative mutex count

[Will Deacon]

On Mon, Apr 15, 2013 at 03:37:59PM +0100, Waiman Long wrote:
> If it is confirmed that all the supported architectures can allow a
> negative mutex count without incorrect behavior, we can then back
> out the architecture specific change and allow the mutex count to
> go to any negative number. That should further reduce contention for
> non-x86 architecture.
> 
> If this is not the case, this patch should be dropped.

A good starting point might be to look at the asm-generic mutex
implementations, which clears up the majority of architectures. A cursory
glance at mutex-dec.h suggests that it's OK to me...

Will
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