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Subject[PATCH v5 0/6] Fix some bugs related to ramp and dax
Date
This series is based on next-20220225.

Patch 1-2 fix a cache flush bug, because subsequent patches depend on
those on those changes, there are placed in this series. Patch 3-4
are preparation for fixing a dax bug in patch 5. Patch 6 is code cleanup
since the previous patch remove the usage of follow_invalidate_pte().

v5:
- Collect Reviewed-by from Dan Williams.
- Fix panic reported by kernel test robot <oliver.sang@intel.com>.
- Remove pmdpp parameter from follow_invalidate_pte() and fold it into follow_pte().

v4:
- Fix compilation error on riscv.

v3:
- Based on next-20220225.

v2:
- Avoid the overly long line in lots of places suggested by Christoph.
- Fix a compiler warning reported by kernel test robot since pmd_pfn()
is not defined when !CONFIG_TRANSPARENT_HUGEPAGE on powerpc architecture.
- Split a new patch 4 for preparation of fixing the dax bug.

Muchun Song (6):
mm: rmap: fix cache flush on THP pages
dax: fix cache flush on PMD-mapped pages
mm: rmap: introduce pfn_mkclean_range() to cleans PTEs
mm: pvmw: add support for walking devmap pages
dax: fix missing writeprotect the pte entry
mm: simplify follow_invalidate_pte()

fs/dax.c | 82 +++++-----------------------------------------------
include/linux/mm.h | 3 --
include/linux/rmap.h | 3 ++
mm/internal.h | 26 +++++++++++------
mm/memory.c | 81 +++++++++++++++------------------------------------
mm/page_vma_mapped.c | 16 +++++-----
mm/rmap.c | 68 +++++++++++++++++++++++++++++++++++--------
7 files changed, 114 insertions(+), 165 deletions(-)

--
2.11.0

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