mm/mempolicy.c: fix mempolicy printing in numa_maps
authorDavid Rientjes <rientjes@google.com>
Thu, 30 Jan 2014 23:46:08 +0000 (15:46 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 6 Feb 2014 19:08:12 +0000 (11:08 -0800)
commit126f36274f181043c29188cda4f1c4296dc98a79
tree6f3b9c40ef3f3213dbfb704cd32f0e4aa51ed024
parent6065e532d141ec0cc6f621021f081642d8d6c141
mm/mempolicy.c: fix mempolicy printing in numa_maps

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 <rientjes@google.com>
Reported-by: Robert Lippert <rlippert@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: <stable@vger.kernel.org> [3.7+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mm/mempolicy.c