Re: [PATCH 6/24] make atomic_read() behave consistently on frv

Chris Snook [off-list ref] wrote:

To head off the criticism, I admit this is an oversimplification, and true
busy-waiters should be using cpu_relax(), which contains a barrier.

Why would you want to use cpu_relax()?  That's there to waste time efficiently,
isn't it?  Shouldn't you be using smp_rmb() or something like that?

David