The patch titled
pagemap: document KPF_KSM and show it in page-types
has been added to the -mm tree. Its filename is
pagemap-document-kpf_ksm-and-show-it-in-page-types.patch
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------------------------------------------------------
Subject: pagemap: document KPF_KSM and show it in page-types
From: Wu Fengguang <fengguang.wu@xxxxxxxxx>
It indicates to the system admin that processes mapping such pages may be
eating less physical memory than the reported numbers by legacy tools.
Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Acked-by: Chris Wright <chrisw@xxxxxxxxxx>
Cc: Izik Eidus <ieidus@xxxxxxxxxx>
Cc: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: Matt Mackall <mpm@xxxxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/vm/pagemap.txt | 4 ++++
tools/vm/page-types.c | 2 ++
2 files changed, 6 insertions(+)
diff -puN Documentation/vm/pagemap.txt~pagemap-document-kpf_ksm-and-show-it-in-page-types Documentation/vm/pagemap.txt
--- a/Documentation/vm/pagemap.txt~pagemap-document-kpf_ksm-and-show-it-in-page-types
+++ a/Documentation/vm/pagemap.txt
@@ -59,6 +59,7 @@ There are three components to pagemap:
18. UNEVICTABLE
19. HWPOISON
20. NOPAGE
+ 21. KSM
Short descriptions to the page flags:
@@ -93,6 +94,9 @@ Short descriptions to the page flags:
20. NOPAGE
no page frame exists at the requested address
+21. KSM
+ identical memory pages dynamically shared between one or more processes
+
[IO related page flags]
1. ERROR IO error occurred
3. UPTODATE page has up-to-date data
diff -puN tools/vm/page-types.c~pagemap-document-kpf_ksm-and-show-it-in-page-types tools/vm/page-types.c
--- a/tools/vm/page-types.c~pagemap-document-kpf_ksm-and-show-it-in-page-types
+++ a/tools/vm/page-types.c
@@ -49,6 +49,7 @@
#define KPF_UNEVICTABLE 18
#define KPF_HWPOISON 19
#define KPF_NOPAGE 20
+#define KPF_KSM 21
/* [32-] kernel hacking assistances */
#define KPF_RESERVED 32
@@ -97,6 +98,7 @@ static char *page_flag_names[] = {
[KPF_UNEVICTABLE] = "u:unevictable",
[KPF_HWPOISON] = "X:hwpoison",
[KPF_NOPAGE] = "n:nopage",
+ [KPF_KSM] = "x:ksm",
[KPF_RESERVED] = "r:reserved",
[KPF_MLOCKED] = "m:mlocked",
_
Patches currently in -mm which might be from fengguang.wu@xxxxxxxxx are
linux-next.patch
mm-memory-failure-remove-config_unevictable_lru-config-option.patch
readahead-add-blk_run_backing_dev.patch
readahead-add-blk_run_backing_dev-fix.patch
readahead-add-blk_run_backing_dev-fix-fix-2.patch
mm-clean-up-page_remove_rmap.patch
mm-oom-analysis-add-per-zone-statistics-to-show_free_areas.patch
mm-oom-analysis-add-buffer-cache-information-to-show_free_areas.patch
mm-oom-analysis-add-shmem-vmstat.patch
mm-shrink_inactive_list-nr_scan-accounting-fix-fix.patch
mm-vmstat-add-isolate-pages.patch
mm-vmstat-add-isolate-pages-fix.patch
vmscan-throttle-direct-reclaim-when-too-many-pages-are-isolated-already.patch
mm-remove-__addsub_zone_page_state.patch
mm-count-only-reclaimable-lru-pages-v2.patch
vmscan-move-clearpageactive-from-move_active_pages-to-shrink_active_list.patch
vmscan-kill-unnecessary-page-flag-test.patch
vmscan-kill-unnecessary-prefetch.patch
ksm-add-mmu_notifier-set_pte_at_notify.patch
ksm-first-tidy-up-madvise_vma.patch
ksm-define-madv_mergeable-and-madv_unmergeable.patch
ksm-the-mm-interface-to-ksm.patch
ksm-no-debug-in-page_dup_rmap.patch
ksm-identify-pageksm-pages.patch
ksm-kernel-samepage-merging.patch
ksm-prevent-mremap-move-poisoning.patch
ksm-change-copyright-message.patch
ksm-change-ksm-nice-level-to-be-5.patch
mm-do-batched-scans-for-mem_cgroup.patch
page-types-move-from-documentation-vm-to-tools-vm.patch
pagemap-export-kpf_hwpoison.patch
pagemap-document-kpf_ksm-and-show-it-in-page-types.patch
documentation-vm-gitignore-add-page-types.patch
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