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| author | Wu Fengguang <fengguang.wu@intel.com> | 2009-10-07 16:32:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-08 07:36:39 -0700 |
| commit | a1bbb5ec39042fb762e7f4bcc634da0d87834193 (patch) | |
| tree | 20bb538ee4b3a9fbf5e8e9d1988fed2011deffce /Documentation/vm/pagemap.txt | |
| parent | 253fb02d62571e5455eedc9e39b9d660e86a40f0 (diff) | |
| download | linux-a1bbb5ec39042fb762e7f4bcc634da0d87834193.tar.gz linux-a1bbb5ec39042fb762e7f4bcc634da0d87834193.tar.bz2 linux-a1bbb5ec39042fb762e7f4bcc634da0d87834193.zip | |
pagemap: document KPF_KSM and show it in page-types
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@intel.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Izik Eidus <ieidus@redhat.com>
Acked-by: Chris Wright <chrisw@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/vm/pagemap.txt')
| -rw-r--r-- | Documentation/vm/pagemap.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/vm/pagemap.txt b/Documentation/vm/pagemap.txt index 2fdd84a19109..df09b9650a81 100644 --- a/Documentation/vm/pagemap.txt +++ b/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 |