[PATCH hmm 5/6] mm/hmm: remove the CONFIG_TRANSPARENT_HUGEPAGE #ifdef

[Christoph Hellwig]

On Fri, Mar 20, 2020 at 01:49:04PM -0300, Jason Gunthorpe wrote:
> From: Jason Gunthorpe <jgg at mellanox.com>
> 
> This code can be compiled when CONFIG_TRANSPARENT_HUGEPAGE is off, so
> remove the ifdef.

It can compile, but will the compiler optimize it away?  Seems like
both pmd_trans_huge and pmd_devmap are stubs for
!CONFIG_TRANSPARENT_HUGEPAGE, so yes.  But that should be mentioned
in the commit message.