On Thu, 4 Nov 2010 10:09:53 +0000, Chris Wilson <chris at chris-wilson.co.uk> wrote: > /* Release reference and decrement refcount. */ > idr_remove(&filp->object_idr, handle); > spin_unlock(&filp->table_lock); > > + synchronize_rcu(); > +
This is an absolute performance killer. Looks like we might have to endure call_rcu if we want to proceed down this path. -Chris -- Chris Wilson, Intel Open Source Technology Centre
