Well if there is only one memory location involved, then smp_rmb() isn'tgoing to really do anything anyway, so it would be incorrect to use it.rmb() orders *any* two reads; that includes two reads from the same location.If the two reads are to the same location, all CPUs I am aware of will maintain the ordering without need for a memory barrier.
That's true of course, although there is no real guarantee for that. Segher - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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