[PATCH 0/5] mm: rework hmm to use devm_memremap_pages

[Dan Williams]

Hi Andrew, please consider this series for 4.18.

For maintainability, as ZONE_DEVICE continues to attract new users,
it is useful to keep all users consolidated on devm_memremap_pages() as
the interface for create "device pages".

The devm_memremap_pages() implementation was recently reworked to make
it more generic for arbitrary users, like the proposed peer-to-peer
PCI-E enabling. HMM pre-dated this rework and opted to duplicate
devm_memremap_pages() as hmm_devmem_pages_create().

Rework HMM to be a consumer of devm_memremap_pages() directly and fix up
the licensing on the exports given the deep dependencies on the mm.

Patches based on v4.17-rc6 where there are no upstream consumers of the
HMM functionality.

---

Dan Williams (5):
      mm, devm_memremap_pages: mark devm_memremap_pages() EXPORT_SYMBOL_GPL
      mm, devm_memremap_pages: handle errors allocating final devres action
      mm, hmm: use devm semantics for hmm_devmem_{add,remove}
      mm, hmm: replace hmm_devmem_pages_create() with devm_memremap_pages()
      mm, hmm: mark hmm_devmem_{add,add_resource} EXPORT_SYMBOL_GPL


 Documentation/vm/hmm.txt |    1 
 include/linux/hmm.h      |    4 -
 include/linux/memremap.h |    1 
 kernel/memremap.c        |   39 +++++-
 mm/hmm.c                 |  297 +++++++---------------------------------------
 5 files changed, 77 insertions(+), 265 deletions(-)