[PATCH 3.10 008/104] mm/mempolicy.c: fix mempolicy printing in numa_maps

From: Greg Kroah-Hartman
Date: Tue Feb 04 2014 - 17:53:47 EST

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


From: David Rientjes <rientjes@xxxxxxxxxx>

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

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 <rientjes@xxxxxxxxxx>
Reported-by: Robert Lippert <rlippert@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> [3.7+]
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

mm/mempolicy.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2801,7 +2801,7 @@ int mpol_to_str(char *buffer, int maxlen
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 = pol->mode;

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/