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

[Suzanne Wood <suzannew@cs.pdx.edu>]

Sorry to be thinking on-line, but if you mean this:

  if (in_dev = rcu_dereference(dev->ip_ptr))

I think that's fine.

  > From suzannew Thu Sep 29 16:39:57 2005

  >   > 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.

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