Re: [RFC][PATCH] identify in_dev_get rcu read-side critical sections

  > From suzannew Thu Sep 29 16:30:28 2005

  > > From: Herbert Xu 30 Sep 2005 07:28

  > > BTW, could you please move the rcu_dereference in in_dev_get()
  > > into the if clause? The barrier is not needed when ip_ptr is
  > > NULL.

  > The trouble with that may be that there are three events, the
  > dereference, the assignment, and the conditional test.  The
  > rcu_dereference() is meant to assure deferred destruction
  > throughout.

Sorry, I was thinking in terms of the rcu_read_lock, so this is misstated.