From: David Rientjes <rientjes@xxxxxxxxxx>
Subject: mm/mempolicy.c: fix mempolicy printing in numa_maps
As a result of 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 <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>
---
mm/mempolicy.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/mempolicy.c~mm-mempolicyc-fix-mempolicy-printing-in-numa_maps mm/mempolicy.c
--- a/mm/mempolicy.c~mm-mempolicyc-fix-mempolicy-printing-in-numa_maps
+++ a/mm/mempolicy.c
@@ -2930,7 +2930,7 @@ void mpol_to_str(char *buffer, int maxle
unsigned short mode = MPOL_DEFAULT;
unsigned short flags = 0;
- if (pol && pol != &default_policy) {
+ if (pol && pol != &default_policy && !(pol->flags & MPOL_F_MORON)) {
mode = pol->mode;
flags = pol->flags;
}
_
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