mm-thp-khugepaged-add-policy-for-finding-target-node-fix

mm-thp-khugepaged-add-policy-for-finding-target-node-fix

make last_khugepaged_target_node local to khugepaged_find_target_node()

Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrew Davidoff <davidoff@qedmf.net>
Cc: Bob Liu <bob.liu@oracle.com>
Cc: Bob Liu <lliubbo@gmail.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>