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(). v7: - Remove redurant "*" above vma_address() reported by Christoph. - Fix oops (reported by Qian) on arm64 by using "pmd_present() && pmd_devmap()" to workaround the bug in pmd_leaf() on arm64, which is fixed in another patch [1]. [1] https://lore.kernel.org/all/20220403024928.4125-1-songmuchun@xxxxxxxxxxxxx/ v6: - Collect Reviewed-by from Christoph Hellwig. - Fold dax_entry_mkclean() into dax_writeback_one(). v5: - Collect Reviewed-by from Dan Williams. - Fix panic reported by kernel test robot <oliver.sang@xxxxxxxxx>. - 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 | 98 +++++++--------------------------------------------- include/linux/mm.h | 3 -- include/linux/rmap.h | 3 ++ mm/internal.h | 26 +++++++++----- mm/memory.c | 81 ++++++++++++------------------------------- mm/page_vma_mapped.c | 17 ++++----- mm/rmap.c | 68 +++++++++++++++++++++++++++++------- 7 files changed, 120 insertions(+), 176 deletions(-) -- 2.11.0
