Re: [PATCH -v7][RFC]: mutex: implement adaptive spinning

[Linus Torvalds]

On Thu, 8 Jan 2009, Peter Zijlstra wrote:
> 
> This was done because the interaction between trylock_slowpath and that
> -1000 state hurt my head.

Yeah, it was a stupid hacky thing to avoid the "list_empty()", but doing 
it explicitly is fine (we don't hold the lock, so the list isn't 
necessarily stable, but doing "list_empty()" is fine because we don't ever 
dereference the pointers, we just compare the pointers themselves).

I shouldn't have done that hacky thing, it wasn't worth it.

		Linus
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