This series makes hugetlb_optimize_vmemmap compatible with memmap_on_memory and is based on mm-stable. The reason refers to the patch 2's commit log. v5: - Replace enum to defines per David. - Walk vmemmap page tables to avoid false-positive. v4: - Fix compiling error when CONFIG_MEMORY_HOTPLUG is disabled reported by kernel test robot. - Fix a bug when memory_block_size_bytes() is not equal to section size. v3: - Switch complicated enumeration magic (David). - Introduce PageVmemmapSelfHosted to make both parameters compatible (David and Oscar). v2: - Fix compile error when !CONFIG_ZONE_DEVICE reported by kernel test robot. Muchun Song (2): mm: memory_hotplug: enumerate all supported section flags mm: memory_hotplug: make hugetlb_optimize_vmemmap compatible with memmap_on_memory Documentation/admin-guide/kernel-parameters.txt | 22 ++++----- Documentation/admin-guide/sysctl/vm.rst | 5 +- include/linux/memory_hotplug.h | 9 ---- include/linux/mmzone.h | 41 +++++++++++---- include/linux/page-flags.h | 11 +++++ mm/hugetlb_vmemmap.c | 66 ++++++++++++++++++++++--- mm/memory_hotplug.c | 33 +++++++------ mm/sparse.c | 2 +- 8 files changed, 132 insertions(+), 57 deletions(-) -- 2.11.0