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mm: smaps: export mlock information

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Currently there is no way to find whether a process has locked its pages
in memory or not.  And which of the memory regions are locked in memory.

Add a new field "Locked" to export this information via the smaps file.

Signed-off-by: Nikanth Karthikesan <[email protected]>
Acked-by: Balbir Singh <[email protected]>
Acked-by: Wu Fengguang <[email protected]>
Cc: Matt Mackall <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Nikanth Karthikesan 2011-01-13 15:45:53 -08:00 • committed by Linus Torvalds
commit 2d90508f63
2 changed files with 8 additions and 2 deletions
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3
Documentation/filesystems/proc.txt
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@ -375,6 +375,7 @@ Anonymous: 0 kB
Swap: 0 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Locked: 374 kB
The first of these lines shows the same information as is displayed for the
mapping in /proc/PID/maps. The remaining lines show the size of the mapping
@ -670,6 +671,8 @@ varies by architecture and compile options. The following is from a
> cat /proc/meminfo
The "Locked" indicates whether the mapping is locked in memory or not.
MemTotal: 16344972 kB
MemFree: 13634064 kB