On Fri, Oct 04, 2013 at 03:31:35PM +0200, Oleg Nesterov wrote: > > I'm really starting to think we shouldn't do this in rcu_sync at all. > > I do not really understand why you insist that rcu_sync() should not > try to help to the users which need the exclusive mode.
But what other users; you yourself said that percpu-rwsem isn't one for long if ever.