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[PATCH v3 1/4] mm, documentation: clarify /proc/pid/status VmSwap limitations

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  [PATCH v3 1/4] mm, documentation: clarify /proc/pid/status VmSwap limitations Vlastimil Babka <vbabka@suse.cz> - 2015-08-05 15:10 +0200

#1200713 — [PATCH v3 1/4] mm, documentation: clarify /proc/pid/status VmSwap limitations

The documentation for /proc/pid/status does not mention that the value of
VmSwap counts only swapped out anonymous private pages and not shmem. This is
not obvious, so document this limitation.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---
 Documentation/filesystems/proc.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index d411ca6..29f4011 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -237,6 +237,8 @@ Table 1-2: Contents of the status files (as of 4.1)
  VmPTE                       size of page table entries
  VmPMD                       size of second level page tables
  VmSwap                      size of swap usage (the number of referred swapents)
+                             by anonymous private data (shmem swap usage is not
+                             included)
  Threads                     number of threads
  SigQ                        number of signals queued/max. number for queue
  SigPnd                      bitmap of pending signals for the thread
-- 
2.4.6

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