From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx> Rework how the _map_count field in struct page is used to record why the page was allocated. We now have about twenty bits available, and I've taken two of them to mark pages allocated for page tables and through vmalloc. They are reported by the page-types tool as g and V respectively. Changes since v3: - Ack from Martin on s390 changes - Fix up some comments - Removed check for PageType from fs/proc/page.c; page_mapped() handles this just fine. - Added KPF_VMALLOC and KPF_PGTABLE (hence cc'ing linux-api) - Set KPF_VMALLOC and KPF_PGTABLE in fs/proc/page.c - Interpret KPF_VMALLOC and KPF_PGTABLE in tools/vm/page-flags.c - Set PageTable on tile's extra pages Matthew Wilcox (4): s390: Use _refcount for pgtables mm: Split page_type out from _map_count mm: Mark pages allocated through vmalloc mm: Mark pages in use for page tables arch/s390/mm/pgalloc.c | 21 +++++++------ arch/tile/mm/pgtable.c | 3 ++ fs/proc/page.c | 4 +++ include/linux/mm.h | 2 ++ include/linux/mm_types.h | 13 +++++--- include/linux/page-flags.h | 57 ++++++++++++++++++++++------------ include/uapi/linux/kernel-page-flags.h | 3 +- kernel/crash_core.c | 1 + mm/page_alloc.c | 13 +++----- mm/vmalloc.c | 2 ++ scripts/tags.sh | 6 ++-- tools/vm/page-types.c | 2 ++ 12 files changed, 82 insertions(+), 45 deletions(-) -- 2.16.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
