*/
ret = -ENOSPC;
if ((cgroup_task_count(cur->css.cgroup) || cur->attach_in_progress) &&
- (cpumask_empty(trial->cpus_allowed) ||
+ (cpumask_empty(trial->cpus_allowed) &&
nodes_empty(trial->mems_allowed)))
goto out;
mutex_lock(&cpuset_mutex);
+ /*
+ * We allow to move tasks into an empty cpuset if sane_behavior
+ * flag is set.
+ */
ret = -ENOSPC;
- if (cpumask_empty(cs->cpus_allowed) || nodes_empty(cs->mems_allowed))
+ if (!cgroup_sane_behavior(cgrp) &&
+ (cpumask_empty(cs->cpus_allowed) || nodes_empty(cs->mems_allowed)))
goto out_unlock;
cgroup_taskset_for_each(task, cgrp, tset) {