James Morris said:
> xchg() may be useful in some situations.
The name of the function certainly sounds very promising;
an atomic exchange operation that can swap pointers
would be just ducky. It's actually overkill - all I need
is atomic assigment - but it'll certainly solve the problem.
But where is this xchg() operation? A recursive grep for
"xchg" found stuff in arch/ppc, but that's it in
linux 2.5.26. Do you mean an xchg operation for some
specific CPU architecture? If so, that's less desirable -
I'd like an operation that ports to anything if possible.
--- David A. Wheeler
dwheelerat_private
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