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: - Removed patch 'mm: update the memmap stat before page is freed', as noticed by Yosry after 3/3 that patch is not needed anymore. - renamed nr_memmap to nr_mammp_pages and nr_memmap_boot to nr_memmap_boot_pages as suggested by David Hildenbrand - Added the origianl oops information as suggested by Alison Schofield - Improved commit log message as suggested by David Hildenbrand - Added review-by's, acked-by's, and tested-by's v3: https://lore.kernel.org/linux-mm/20240808154237.220029-1-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 | 51 ++++++++++++++++++++---------------------- 9 files changed, 48 insertions(+), 78 deletions(-) -- 2.46.0.76.ge559c4bf1a-goog
