| Date | Sun, 5 Jul 2009 22:31:13 -0400 | From | Theodore Tso <> | Subject | Re: [PATCH 01/10] ext4: Use rcu_barrier() on module unload. |
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On Tue, Jun 23, 2009 at 05:03:59PM +0200, Jesper Dangaard Brouer wrote: > The ext4 module uses rcu_call() thus it should use rcu_barrier()on > module unload. > > The kmem cache ext4_pspace_cachep is sometimes free'ed using > call_rcu() callbacks. Thus, we must wait for completion of call_rcu() > before doing kmem_cache_destroy(). > > I have difficult determining if no new call_rcu() callbacks can be envoked. > Would the maintainer please verify this?
Yes, that's correct. Thanks; I've included this in the ext4 patch queue.
- Ted
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