On Sat, Jun 09, 2012 at 01:14:46AM +0300, Kirill A. Shutemov wrote: > > The implementation would be less unpleasant if we could do the > > rcu_barrier() in kmem_cache_destroy(). I can't see a way of doing that > > without adding a dedicated slab flag, which would require editing all > > the filesystems anyway. > > I think rcu_barrier() for all kmem_cache_destroy() would be too expensive.
You've got to be kidding. Please, show us the codepath that would be hot enough to make that too expensive and would contain kmem_cache_destroy(). Note that module unload is *not* a hot path - not on any even remotely sane use. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
