Re: [PATCH v2] netlink: Replace rhash_portid with bound

Hello,

On Tue, Sep 22, 2015 at 12:28:45PM -0700, Linus Torvalds wrote:

Both acquire and smp_rmb() are equally free on x86.

Was this always like this?  Ah, okay, from 2007.  Was thinking it's
still doing an actual rmb.  Talk about being confused.

It appears that we don't do the X86_PPRO_FENCE bug handling for
acquire, but I guess we should.

Hmmm?  We're doing that.  PPRO_FENCE makes both acquire and release
use smp_mb().

Thanks.

-- 
tejun