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>
Cc: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx>
Cc: Izik Eidus <ieidus@xxxxxxxxxx>
Acked-by: Chris Wright <chrisw@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/vm/page-types.c | 2 ++
Documentation/vm/pagemap.txt | 4 ++++
2 files changed, 6 insertions(+)
diff -puN Documentation/vm/page-types.c~pagemap-document-kpf_ksm-and-show-it-in-page-types Documentation/vm/page-types.c
--- a/Documentation/vm/page-types.c~pagemap-document-kpf_ksm-and-show-it-in-page-types
+++ a/Documentation/vm/page-types.c
@@ -71,6 +71,7 @@
#define KPF_UNEVICTABLE 18
#define KPF_HWPOISON 19
#define KPF_NOPAGE 20
+#define KPF_KSM 21
/* [32-] kernel hacking assistances */
#define KPF_RESERVED 32
@@ -119,6 +120,7 @@ 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",
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
_
Patches currently in -mm which might be from fengguang.wu@xxxxxxxxx are
linux-next.patch
pagemap-export-kpf_hwpoison.patch
pagemap-document-kpf_ksm-and-show-it-in-page-types.patch
page-types-add-gpl-note.patch
page-types-introduce-checked_open.patch
page-types-make-standalone-pagemap-kpageflags-read-routines.patch
page-types-make-voffset-local-variables.patch
page-types-introduce-kpageflags_flags.patch
page-types-add-hwpoison-unpoison-feature.patch
readahead-add-blk_run_backing_dev.patch
mm-vsmcan-check-shrink_active_list-sc-isolate_pages-return-value.patch
dev-mem-remove-redundant-test-on-len.patch
dev-mem-introduce-size_inside_page.patch
dev-mem-cleanup-unxlate_dev_mem_ptr-calls.patch
dev-mem-cleanup-unxlate_dev_mem_ptr-calls-fix.patch
dev-mem-cleanup-unxlate_dev_mem_ptr-calls-fix-fix.patch
dev-mem-make-size_inside_page-logic-straight.patch
dev-mem-remove-the-written-variable-in-write_kmem.patch
dev-mem-remove-the-written-variable-in-write_kmem-fix.patch
dev-mem-remove-redundant-parameter-from-do_write_kmem.patch
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