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Date:   Wed, 14 Aug 2019 09:59:18 +0200
From:   Christoph Hellwig <>
To:     Jérôme Glisse <>,
        Jason Gunthorpe <>,
        Ben Skeggs <>
Cc:     Ralph Campbell <>,
        Bharata B Rao <>,
        Andrew Morton <>,,,,
Subject: turn hmm migrate_vma upside down v3

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


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

A git tree is also available at:

    git:// 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

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