[PATCH hmm 3/6] mm/hmm: remove unused code and tidy comments

[Christoph Hellwig]

On Fri, Mar 20, 2020 at 01:49:02PM -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, remove an unused ret, and move one
> function only used by hmm.c into hmm.c

This looks good:

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

Btw, the top of file comment in include/linux/hmm.h really needs some
work as well.  In fact I think it should be mostly removed with any
remaining useful bit moved to Documentation/vm/hmm.rst.