[Nouveau] [PATCH 1/6] mm: always return EBUSY for invalid ranges in hmm_range_{fault, snapshot}

[Christoph Hellwig]

On Tue, Jul 23, 2019 at 02:54:45PM +0000, Jason Gunthorpe wrote:
> I think without the commit message I wouldn't have been able to
> understand that, so Christoph, could you also add the comment below
> please?

I don't think this belongs into this patch.  I can add it as a separate
patch under your name and with your signoff if you are ok with that.