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Paul Mackerras <paulus@samba.org> wrote: > No, that's not the problem. The problem is that you can get q == &b > and d == 1, believe it or not. That is, you can see the new value of > the pointer but the old value of the thing pointed to. But that doesn't make any sense! That would mean we that we'd've read b into d before having read the new value of p into q, and thus before having calculated the address from which to read d (ie: &b) - so how could we know we were supposed to read d from b and not from a without first having read p? Unless, of course, the smp_wmb() isn't effective, and the write to b happens after the write to p; or the Alpha's cache isn't fully coherent. David - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org 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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