Re: [patch 0/9] mutex subsystem, -V4

[Andrew Morton]

Nicolas Pitre <nico@xxxxxxx> wrote:
>
> How can't you get the fact that semaphores could _never_ be as simple as 
> mutexes?  This is a theoritical impossibility, which maybe turns out not 
> to be so true on x86, but which is damn true on ARM where the fast path 
> (the common case of a mutex) is significantly more efficient.
>

I did notice your comments.  I'll grant that mutexes will save some tens of
fastpath cycles on one minor architecture.  Sorry, but that doesn't seem
very important.
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