[PATCH mm-unstable v3 0/4] mm/mglru: Kconfig cleanup

[Kinsey Ho <kinseyho@google.com>]

This series is the result of the following discussion:
https://lore.kernel.org/47066176-bd93-55dd-c2fa-002299d9e034@linux.ibm.com/

It mainly avoids building the code that walks page tables on CPUs that
use it, i.e., those don't support hardware accessed bit. Specifically,
it introduces a new Kconfig to guard some of functions added by
commit bd74fdaea146 ("mm: multi-gen LRU: support page table walks")
on CPUs like POWER9, on which the series was tested.


Kinsey Ho (4):
  mm/mglru: add CONFIG_ARCH_HAS_HW_PTE_YOUNG
  mm/mglru: add CONFIG_LRU_GEN_WALKS_MMU
  mm/mglru: remove CONFIG_MEMCG
  mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE

 arch/Kconfig                   |   8 +
 arch/arm64/Kconfig             |   1 +
 arch/x86/Kconfig               |   1 +
 arch/x86/include/asm/pgtable.h |   6 -
 include/linux/memcontrol.h     |   2 +-
 include/linux/mm_types.h       |  16 +-
 include/linux/mmzone.h         |  28 +---
 include/linux/pgtable.h        |   2 +-
 kernel/fork.c                  |   2 +-
 mm/Kconfig                     |   4 +
 mm/vmscan.c                    | 271 ++++++++++++++++++---------------
 11 files changed, 174 insertions(+), 167 deletions(-)

-- 
2.43.0.472.g3155946c3a-goog