Re: [PATCH 01/10] ext4: Use rcu_barrier() on module unload.
From: Theodore Tso <hidden>
Date: 2009-07-06 02:32:30
Also in:
linux-ext4, linux-nfs, linux-wireless, lkml, netfilter-devel
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 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html