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Subject[PATCH v2 0/3] mm/hmm: fixes for device private page migration
Date
Testing the latest linux git tree turned up a few bugs with page
migration to and from ZONE_DEVICE private and anonymous pages.
Hopefully it clarifies how ZONE_DEVICE private struct page uses
the same mapping and index fields from the source anonymous page
mapping.

Changes from v1 to v2:

Patch #1 merges ZONE_DEVICE page struct into a union of lru and
a struct for ZONE_DEVICE fields. So, basically a new patch.

Patch #2 updates the code comments for clearing page->mapping as
suggested by John Hubbard.

Patch #3 is unchanged from the previous posting but note that
Andrew Morton has v1 queued in v5.2-mmotm-2019-07-18-16-08.

Ralph Campbell (3):
mm: document zone device struct page reserved fields
mm/hmm: fix ZONE_DEVICE anon page mapping reuse
mm/hmm: Fix bad subpage pointer in try_to_unmap_one

include/linux/mm_types.h | 9 ++++++++-
kernel/memremap.c | 4 ++++
mm/rmap.c | 1 +
3 files changed, 13 insertions(+), 1 deletion(-)

--
2.20.1

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