On Sat, 29 Sep 2007, Nick Piggin wrote: > [ This is true for x86's sfence/lfence, but raises a question about Linux's > memory barriers. Does anybody expect that a sequence of smp_wmb and smp_rmb > would ever provide a full smp_mb barrier? I've always assumed no, but I > don't know if it is actually documented? ]
No, that can't be. rmb+wmb can't be considered a full mb. There was a recent discussion about this in the thread originated by peterz scalable rw_mutex patches. - Davide - 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/