[PATCH v2 hmm 3/9] mm/hmm: remove unused code and tidy comments

[Christoph Hellwig]

On Mon, Mar 23, 2020 at 10:14:51PM -0300, Jason Gunthorpe wrote:
> From: Jason Gunthorpe <jgg at mellanox.com>
> 
> Delete several functions that are never called, fix some desync between
> comments and structure content, toss the now out of date top of file
> header, and move one function only used by hmm.c into hmm.c
> 
> Signed-off-by: Jason Gunthorpe <jgg at mellanox.com>

Looks good,

Reviewed-by: Christoph Hellwig <hch at lst.de>