On Tue, 2008-04-29 at 13:36 +0100, Hugh Dickins wrote: > > Ugh. It's just so irritating to introduce these blockages against > such a remote possibility (but there again, that's what so much of > kernel code has to be about). Is there any other way of handling it? Not that much overhead... I think smp_read_barrier_depends() is a nop on most archs no ? The data dependency between all the pointers takes care of ordering in many cases. So it boils down to smp_wmb's when setting which is not that expensive. Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
