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

[Christoph Hellwig]

On Tue, Aug 06, 2019 at 12:50:10AM -0700, Hugh Dickins wrote:
> Though personally I'm averse to managing "f"objects through
> "m"interfaces, which can get ridiculous (notably, MADV_HUGEPAGE works
> on the virtual address of a mapping, but the huge-or-not alignment of
> 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.

Such an interface seems very useful, although the two fcntls seem a bit
odd.

But I think the point here is that the i915 has its own somewhat odd
instance of tmpfs.  If we could pass the equivalent of the huge=*
options to shmem_file_setup all that garbage (including the
shmem_file_setup_with_mnt function) could go away.