Re: [PATCH] list.h: add list_for_each_entry_continue_rcu

["Paul E. McKenney" <paulmck@linux.vnet.ibm.com>]

On Fri, Sep 07, 2007 at 09:09:52PM +0200, Johannes Berg wrote:
> On Fri, 2007-09-07 at 08:34 -0700, Paul E. McKenney wrote:
> 
> > > + * Continue to iterate over rcu list of given type, continuing after
> > > + * the current position.
> > 
> > Please add something like the following to this comment:
> > 
> > 	Note that the caller is responsible for making sure that
> > 	the element remains in place between the earlier iterator
> > 	and this one.  One way to do this is to ensure that
> > 	both iterators are covered by the same rcu_read_lock(),
> > 	while others involve reference counts, flags, or mutexes.
> 
> Sure, will do. Should this comment also be added to
> list_for_each_continue_rcu()?

Actually, list_for_each_continue_rcu() needs to be removed in favor of
your new list_for_each_entry_continue_rcu().  There are currently only
two users as of 2.6.22.  One of them immediately does a list_entry(),
and the other would convert easily as well.  So please let me know
when this gets accepted!  ;-)

						Thanx, Paul