On Thu, 3 Apr 2008, Andrea Arcangeli wrote:

> Why can't it fire on the mm_struct where GRU just registered? That
> mm_struct existed way before GRU registered, and VM is free to unmap
> it w/o mmap_sem if there was any memory pressure.

Right. Hmmm... Bad situation. We would have invalidate_start take
a lock to prevent registration until _end has run.

We could use stop_machine_run to register the notifier.... ;-).


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