[PATCHv2 2/3] i915: convert to new mount API

[Al Viro]

On Tue, Aug 06, 2019 at 12:50:10AM -0700, Hugh Dickins wrote:

> that mapping must have been decided previously).  In Google we do use
> fcntls F_HUGEPAGE and F_NOHUGEPAGE to override on a per-file basis -
> one day I'll get to upstreaming those.

That'd be nice - we could kill the i915 wierd private shmem instance,
along with some kludges in mm/shmem.c.