[PATCH v2 0/2] mm: improve folio refcount scalability

[Gorbunov Ivan]

This is a v2 of the series that aims to improve refcount scalability via
dedicated bit. [1]

Changes since v1:
  - Fixed frozen pages initialization
  - Fixed page_ref_count behavior on frozen pages 
  - Added debug checks to ensure that some modification methods are
    not called on frozen pages

[1] https://lore.kernel.org/all/20260228141941.f6fec687aae9d80a161387f4@xxxxxxxxxxxxxxxxxxxx/
Gladyshev Ilya (1):
  mm: implement page refcount locking via dedicated bit

Gorbunov Ivan (1):
  mm: drop page refcount zero state semantics

 drivers/pci/p2pdma.c               |  2 +-
 include/linux/page-flags.h         | 13 +++++++++
 include/linux/page_ref.h           | 43 +++++++++++++++++++++++++++---
 kernel/liveupdate/kexec_handover.c |  2 +-
 mm/hugetlb.c                       |  2 +-
 mm/mm_init.c                       |  6 ++---
 mm/page_alloc.c                    |  4 +--
 7 files changed, 61 insertions(+), 11 deletions(-)

-- 
2.43.0