Messages in this thread | | | Date | Thu, 16 Aug 2007 22:07:47 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures |
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On Fri, Aug 17, 2007 at 09:28:00AM +0800, Herbert Xu wrote: > On Thu, Aug 16, 2007 at 06:02:32PM -0700, Paul E. McKenney wrote: > > > > Yep. Or you can use atomic_dec_return() instead of using a barrier. > > Or you could use smp_mb__{before,after}_atomic_dec.
Yep. That would be an example of a barrier, either in the atomic_dec() itself or in the smp_mb...().
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