On Fri, Feb 03, 2006 at 10:34:01AM -0800, Dave Hansen wrote:
Lastly, is this a place for krefs? I don't see a real need for a
destructor yet, but the idea is fresh in my mind.
Well, what happens when you drop the last reference to this container?
Right now, your patch doesn't cause anything to happen, and if that's
acceptable, then fine, you don't need to use a struct kref.
But if not, then why have a reference count at all? :)
Please note, this patch introduces only small parts of it.
It doesn't introduce the code which creates containers/destroys them etc.
As I mentioned in another email:
In OpenVZ we have 2-level refcounting (mentioned recently by Linus as in
mm). Process counter is used to decide when container should
collapse/cleanuped and real refcounter is used to free the structures
which can be referenced from somewhere else.
Kirill
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