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Subject[PATCH v5 0/4] Mark vmalloc and page-table pages
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From: Matthew Wilcox <mawilcox@microsoft.com>

This patch set changes how we use the _mapcount field in struct page
so that we can store an extra 20+ bits of information about why the
page was allocated. We expose that information to userspace through
/proc/kpageflags to help diagnose memory usage. It can also help
debugging if we know what a page was most recently allocated for.

Changes since v4:
- Added Kirill's acks
- Fixed spelling (Kirill)
- Allow a few extra bits to be used in page_type.

Matthew Wilcox (4):
s390: Use _refcount for pgtables
mm: Split page_type out from _mapcount
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

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