Re: [PATCH tip/core/rcu 1/4] doc: Present the role of READ_ONCE()

[Peter Zijlstra]

On Thu, Nov 05, 2020 at 03:05:07PM -0800, paulmck@xxxxxxxxxx wrote:
> From: "Paul E. McKenney" <paulmck@xxxxxxxxxx>
> 
> This commit adds an explanation of the special cases where READ_ONCE()
> may be used in place of a member of the rcu_dereference() family.

I am confused, there is no actual difference between rcu_dereference()
and READ_ONCE() today. So we _may_ use READ_ONCE() at all times.

Now granted, we probably don't want that, but that does leave me
somewhat confused vs the wording here.