Messages in this thread | | | Date | Fri, 17 Aug 2007 12:16:39 +1000 | From | Paul Mackerras <> | Subject | Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures |
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Christoph Lameter writes:
> No it does not have any volatile semantics. atomic_dec() can be reordered > at will by the compiler within the current basic unit if you do not add a > barrier.
Volatile doesn't mean it can't be reordered; volatile means the accesses can't be eliminated.
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