Re: [RFC PATCH 5/6] implement per-cpu&per-domain state machinecall_srcu()

[Peter Zijlstra]

On Thu, 2012-03-08 at 11:49 -0800, Paul E. McKenney wrote:
> 
> I too have used (long)(a - b) for a long time, but I saw with my own eyes
> the glee in the compiler-writers' eyes when they discussed signed overflow
> being undefined in the C standard.  I believe that the reasons for signed
> overflow being undefined are long obsolete, but better safe than sorry. 

Thing is, if they break that the whole kernel comes falling down, I
really wouldn't worry about RCU at that point. But to each their
pet-paranoia I guess ;-)
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