diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 5c33ab20cc20..c9e14fda3d6f 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -1811,9 +1811,9 @@ static int update_parent_effective_cpumask(struct cpuset *cs, int cmd,
 		 * Compute add/delete mask to/from effective_cpus
 		 *
 		 * For valid partition:
-		 *   addmask = exclusive_cpus & ~newmask
+		 *   addmask = effective_xcpus & ~newmask
 		 *			      & parent->effective_xcpus
-		 *   delmask = newmask & ~exclusive_cpus
+		 *   delmask = newmask & ~effective_xcpus
 		 *		       & parent->effective_xcpus
 		 *
 		 * For invalid partition:
@@ -1825,11 +1825,11 @@ static int update_parent_effective_cpumask(struct cpuset *cs, int cmd,
 			deleting = cpumask_and(tmp->delmask,
 					newmask, parent->effective_xcpus);
 		} else {
-			cpumask_andnot(tmp->addmask, xcpus, newmask);
+			cpumask_andnot(tmp->addmask, cs->effective_xcpus, newmask);
 			adding = cpumask_and(tmp->addmask, tmp->addmask,
 					     parent->effective_xcpus);
 
-			cpumask_andnot(tmp->delmask, newmask, xcpus);
+			cpumask_andnot(tmp->delmask, newmask, cs->effective_xcpus);
 			deleting = cpumask_and(tmp->delmask, tmp->delmask,
 					       parent->effective_xcpus);
 		}
@@ -1868,7 +1868,7 @@ static int update_parent_effective_cpumask(struct cpuset *cs, int cmd,
 			part_error = PERR_NOCPUS;
 			deleting = false;
 			adding = cpumask_and(tmp->addmask,
-					     xcpus, parent->effective_xcpus);
+					     cs->effective_xcpus, parent->effective_xcpus);
 		}
 	} else {
 		/*
@@ -1890,7 +1890,8 @@ static int update_parent_effective_cpumask(struct cpuset *cs, int cmd,
 			part_error = PERR_NOCPUS;
 			if (is_partition_valid(cs))
 				adding = cpumask_and(tmp->addmask,
-						xcpus, parent->effective_xcpus);
+						     cs->effective_xcpus,
+						     parent->effective_xcpus);
 		} else if (is_partition_invalid(cs) && !cpumask_empty(xcpus) &&
 			   cpumask_subset(xcpus, parent->effective_xcpus)) {
 			struct cgroup_subsys_state *css;