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    SubjectRe: [PATCH 0/24] make atomic_read() behave consistently across all architectures
    Linus Torvalds wrote:
    > So the only reason to add back "volatile" to the atomic_read() sequence is
    > not to fix bugs, but to _hide_ the bugs better. They're still there, they
    > are just a lot harder to trigger, and tend to be a lot subtler.

    What about barrier removal? With consistent semantics we could optimize a fair
    amount of code. Whether or not that constitutes "premature" optimization is
    open to debate, but there's no question we could reduce our register wiping in
    some places.

    -- Chris
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      Last update: 2007-08-20 15:19    [W:0.019 / U:48.176 seconds]
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