Re: [PATCH] Fix a race in pid generation that causes pids to bereused immediately.

[Benjamin Herrenschmidt]

On Mon, 2010-06-14 at 21:21 -0700, Andrew Morton wrote:
> If that happens then the best fix is for those architectures to get
> themselves a cmpxchg64().  Unless for some reason it's simply
> unimplementable?  Worst case I guess one could use a global spinlock. 
> Second-worst-case: hashed spinlocks. 

Right, ppc32 at least can't so that would be spinlocks...

Cheers,
Ben.

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