On Fri, Jan 31, 2014 at 02:55:24AM -0800, David Rientjes wrote:
> commit 8790c71a18e5d2d93532ae250bcf5eddbba729cd upstream.
>
> 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>
> ---
> This is a backport to the 3.10 and 3.12 stable trees.
> The original commit may be applied to the 3.13 stable tree directly.
Thanks David, I'll use your backport to the 3.11 kernel as well.
Cheers,
--
Luis
> mm/mempolicy.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/mempolicy.c b/mm/mempolicy.c
> --- 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;
> --
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