3.8.13.18 -stable review patch.  If anyone has any objections, please let me 
know.

------------------

From: David Rientjes <[email protected]>

commit 8790c71a18e5d2d93532ae250bcf5eddbba729cd upstream.

As a result of commit 5606e3877ad8 ("mm: numa: Migrate on reference
policy"), /proc/<pid>/numa_maps prints the mempolicy for any <pid> as
"prefer:N" for the local node, N, of the process reading the file.

This should only be printed when the mempolicy of <pid> is
MPOL_PREFERRED for node N.

If the process is actually only using the default mempolicy for local
node allocation, make sure "default" is printed as expected.

Signed-off-by: David Rientjes <[email protected]>
Reported-by: Robert Lippert <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Cc: Ingo Molnar <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
[ kamal: backport to 3.8 (reversed if-clause logic) ]
Signed-off-by: Kamal Mostafa <[email protected]>
---
 mm/mempolicy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 2d49a12..eb2848e 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2801,7 +2801,7 @@ int mpol_to_str(char *buffer, int maxlen, struct 
mempolicy *pol)
         */
        VM_BUG_ON(maxlen < strlen("interleave") + strlen("relative") + 16);
 
-       if (!pol || pol == &default_policy)
+       if (!pol || pol == &default_policy || (pol->flags & MPOL_F_MORON))
                mode = MPOL_DEFAULT;
        else
                mode = pol->mode;
-- 
1.8.3.2

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