This series consists of a refactoring/correctness of updating the metadata of tail pages and a couple of fixups for the refcounting part. >From this series on, instead of counting the stacks, we count the outstanding nr_base_pages each stack has, which gives us a much better memory overview. The other fixup is for the migration part. A more detailed explanation can be found in the changelog of the respective patches. Oscar Salvador (3): mm,page_owner: Update metada for tail pages mm,page_owner: Fix refcount imbalance mm,page_owner: Fix accounting of pages when migrating Documentation/mm/page_owner.rst | 73 +++++++------ mm/page_owner.c | 184 +++++++++++++++++++------------- 2 files changed, 146 insertions(+), 111 deletions(-) -- 2.44.0