This patchset tries to support mTHP numa balancing, as a simple solution to start, the NUMA balancing algorithm for mTHP will follow the THP strategy as the basic support. Please find details in each patch. Changes from v2: - Add reviewed tag from Huang, Ying. - Reuse numa_rebuild_single_mapping() to remove duplicate code per Kefeng Wang. - Remove an unnecessary vma_wants_manual_pte_write_upgrad() per Huang, Ying. Changes from v1: - Fix the issue where the end address might exceed the range of the folio size, suggested by Huang, Ying. - Simplify the folio validation. - Add pte_modify() before checking pte writable. - Update the performance data. Changes from RFC v2: - Follow the THP algorithm per Huang, Ying. Changes from RFC v1: - Add some preformance data per Huang, Ying. - Allow mTHP scanning per David Hildenbrand. - Avoid sharing mapping for numa balancing to avoid false sharing. - Add more commit message. Baolin Wang (2): mm: factor out the numa mapping rebuilding into a new helper mm: support multi-size THP numa balancing mm/memory.c | 76 +++++++++++++++++++++++++++++++++++++++++---------- mm/mprotect.c | 3 +- 2 files changed, 63 insertions(+), 16 deletions(-) -- 2.39.3
