[PATCH v2 02/15] mm/mmu_notifier: add an interval tree notifier

[Christoph Hellwig]

On Thu, Nov 07, 2019 at 08:06:08PM +0000, Jason Gunthorpe wrote:
> > 
> > enum mmu_range_notifier_event {
> > 	MMU_NOTIFY_RELEASE,
> > };
> > 
> > ...assuming that we stay with "mmu_range_notifier" as a core name for this 
> > whole thing.
> > 
> > Also, it is best moved down to be next to the new MNR structs, so that all the
> > MNR stuff is in one group.
> 
> I agree with Jerome, this enum is part of the 'struct
> mmu_notifier_range' (ie the description of the invalidation) and it
> doesn't really matter that only these new notifiers can be called with
> this type, it is still part of the mmu_notifier_range.
> 
> The comment already says it only applies to the mmu_range_notifier
> scheme..

In fact the enum is entirely unused.  We might as well just kill it off
entirely.