1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index fbc0b8214af0..e9abd4e4c5cb 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1530,7 +1530,7 @@ static void update_task_scan_period(struct task_struct *p,
                  * scanning faster if shared accesses dominate as it may
                  * simply bounce migrations uselessly
                  */
-                ratio = DIV_ROUND_UP(private * NUMA_PERIOD_SLOTS, (private + shared));
+                ratio = DIV_ROUND_UP(private * NUMA_PERIOD_SLOTS, (private + shared + 1));
                 diff = (diff * ratio) / NUMA_PERIOD_SLOTS;
         }