Re: [PATCH v5 3/4] mm/gup: allow FOLL_LONGTERM & FOLL_PCI_P2PDMA

[Christoph Hellwig]

On Mon, Aug 12, 2024 at 08:12:49PM -0300, Jason Gunthorpe wrote:
> > This is unfortunately not really minor unless we have a well documented
> > way to force this :(
> 
> It is not that different from blocking driver unbind while FDs are
> open which a lot of places do in various ways?

Where do we block driver unbind with an open resource?  The whole
concept is that open resources will pin the in-memory object (and
modulo for a modular driver), but never an unbind or hardware
unplug, of which unbind really just is a simulation.