Re: memory_barrier

[Roland Dreier]

    Bart> Hi, Is there any reason why __memory_barrier() is still
    Bart> referenced in the kernel source?

    Bart> grep -r memory_barrier gave the following back, which at
    Bart> first seems to suggest barrier() is defined using some
    Bart> phantom __memory_barrier(), quite deceiving...

Notice that it's used in <linux/compiler-intel.h> -- the Intel
compiler has an intrinsic called __memory_barrier().  So the
definition of barrier() using this intrinsic is entirely correct and
appropriate.

 - R.
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