[PATCH 00/11] Remove assumptions of THP size

Matthew Wilcox (Oracle)
2020-09-08T19:55:55Z

There are a number of places in the VM which assume that a THP is a PMD
in size. That's true today, and remains true after this patch series,
but this is a prerequisite for switching to arbitrary-sized THPs.
thp_nr_pages() still returns either HPAGE_PMD_NR or 1, but will be
changed later.

Kirill A. Shutemov (2):
mm/huge_memory: Fix total_mapcount assumption of page size
mm/huge_memory: Fix split assumption of page size

Matthew Wilcox (Oracle) (9):
mm/filemap: Fix page cache removal for arbitrary sized THPs
mm/memory: Remove page fault assumption of compound page size
mm/page_owner: Change split_page_owner to take a count
mm/huge_memory: Fix page_trans_huge_mapcount assumption of THP size
mm/huge_memory: Fix can_split_huge_page assumption of THP size
mm/rmap: Fix assumptions of THP size
mm/truncate: Fix truncation for pages of arbitrary size
mm/page-writeback: Support tail pages in wait_for_stable_page
mm/vmscan: Allow arbitrary sized pages to be paged out

include/linux/page_owner.h | 6 +++---
mm/filemap.c | 2 +-
mm/huge_memory.c | 32 +++++++++++++++++---------------
mm/memory.c | 7 ++++---
mm/page-writeback.c | 1 +
mm/page_owner.c | 4 ++--
mm/rmap.c | 10 +++++-----
mm/truncate.c | 6 +++---
mm/vmscan.c | 3 +--
9 files changed, 37 insertions(+), 34 deletions(-)

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2.28.0