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(-) -- 2.28.0
