Re: turn hmm migrate_vma upside down v3

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On 8/14/19 12:59 AM, Christoph Hellwig wrote:
Hi Jérôme, Ben and Jason,

below is a series against the hmm tree which starts revamping the
migrate_vma functionality.  The prime idea is to export three slightly
lower level functions and thus avoid the need for migrate_vma_ops
callbacks.

Diffstat:

     7 files changed, 282 insertions(+), 614 deletions(-)

A git tree is also available at:

     git://git.infradead.org/users/hch/misc.git migrate_vma-cleanup.3

Gitweb:

     http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/migrate_vma-cleanup.3


Changes since v2:
  - don't unmap pages when returning 0 from nouveau_dmem_migrate_to_ram
  - minor style fixes
  - add a new patch to remove CONFIG_MIGRATE_VMA_HELPER

Changes since v1:
  - fix a few whitespace issues
  - drop the patch to remove MIGRATE_PFN_WRITE for now
  - various spelling fixes
  - clear cpages and npages in migrate_vma_setup
  - fix the nouveau_dmem_fault_copy_one return value
  - minor improvements to some nouveau internal calling conventions


Some of the patches seem to have been mangled in the mail.
I was able to edit them and apply to Jason's tree
https://github.com/jgunthorpe/linux.git mmu_notifier branch.
So for the series you can add:

Tested-by: Ralph Campbell <rcampbell@xxxxxxxxxx>
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