Re: workqueue - process context
From: Rene Herman
Date: Sat Feb 19 2005 - 09:34:31 EST
Roland Dreier wrote:
Not destroying its workqueue is a bug in the module just like any
other resource leak. It's analogous to a module allocating some
memory with kmalloc() and not calling kfree() when it's unloaded.
Except though that with kmalloc() it's indeed just a leak while in this
case things might blow up violently if run_workqueue() later accesses a
workqueue_struct (or work_struct) which is already gone as part of the
modules' datasection, for example. That's to say, if I'm reading this
right...
I have no idea about the module refcounting stuff. Is there a chance
that create_workqueue() could increase a reference somewhere so that the
module wouldn't be allowed to unload untill after a destroy_workqueue()?
Rene.
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