Memmap accounting provides us with observability of how much memory is used for per-page metadata: i.e. "struct page"'s and "struct page_ext". It also provides with information of how much was allocated using boot allocator (i.e. not part of MemTotal), and how much was allocated using buddy allocated (i.e. part of MemTotal). This small series fixes a few problems that were discovered with the original patch. Changes: - addressed a few nits from David Hildenbrand - added Acks, and Tested by's v4 https://lore.kernel.org/linux-mm/20240808213437.682006-1-pasha.tatashin@xxxxxxxxxx Pasha Tatashin (3): mm: don't account memmap on failure mm: add system wide stats items category mm: don't account memmap per-node include/linux/mmzone.h | 2 -- include/linux/vmstat.h | 22 +++++++----------- mm/hugetlb_vmemmap.c | 13 ++++------- mm/mm_init.c | 3 +-- mm/page_alloc.c | 1 - mm/page_ext.c | 18 ++++----------- mm/sparse-vmemmap.c | 11 ++++----- mm/sparse.c | 5 ++-- mm/vmstat.c | 52 ++++++++++++++++++++---------------------- 9 files changed, 49 insertions(+), 78 deletions(-) -- 2.46.0.76.ge559c4bf1a-goog
