On Mon, Nov 02, 2015 at 08:36:49PM +0000, David Howells wrote: > Linus Torvalds <torva...@linux-foundation.org> wrote: > > > > + smp_read_barrier_depends(); /* ctrl */ \ > > > + smp_rmb(); /* ctrl + rmb := acquire */ \ > > Doesn't smp_rmb() imply an smp_read_barrier_depends() anyway? In > memory-barriers.txt, it says: > > Read memory barriers imply data dependency barriers, and so can > substitute for them.
Yes, I noted that in a follow up email, Alpha implements both as MB. So just the smp_rmb() is sufficient. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
