diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index da2b3b51630e..894131f47f78 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -2168,17 +2168,13 @@ get_css:
 		spin_lock_irq(&callback_lock);
 		cpumask_copy(cp->effective_cpus, tmp->new_cpus);
 		cp->partition_root_state = new_prs;
-		if (!cpumask_empty(cp->exclusive_cpus) && (cp != cs))
-			compute_excpus(cp, cp->effective_xcpus);
-
 		/*
-		 * Make sure effective_xcpus is properly set for a valid
-		 * partition root.
+		 * Need to compute effective_xcpus if either exclusive_cpus
+		 * is non-empty or it is a valid partition root.
 		 */
-		if ((new_prs > 0) && cpumask_empty(cp->exclusive_cpus))
-			cpumask_and(cp->effective_xcpus,
-				    cp->cpus_allowed, parent->effective_xcpus);
-		else if (new_prs < 0)
+		if ((new_prs > 0) || !cpumask_empty(cp->exclusive_cpus))
+			compute_excpus(cp, cp->effective_xcpus);
+		if (new_prs <= 0)
 			reset_partition_data(cp);
 		spin_unlock_irq(&callback_lock);