1 files changed, 14 insertions, 1 deletions

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index fa31cb9f9898..50f5dc463688 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1818,10 +1818,23 @@ cpumask_t cpuset_cpus_allowed(struct task_struct *tsk)
         cpumask_t mask;
 
         mutex_lock(&callback_mutex);
+        mask = cpuset_cpus_allowed_locked(tsk);
+        mutex_unlock(&callback_mutex);
+
+        return mask;
+}
+
+/**
+ * cpuset_cpus_allowed_locked - return cpus_allowed mask from a tasks cpuset.
+ * Must be  called with callback_mutex held.
+ **/
+cpumask_t cpuset_cpus_allowed_locked(struct task_struct *tsk)
+{
+        cpumask_t mask;
+
         task_lock(tsk);
         guarantee_online_cpus(task_cs(tsk), &mask);
         task_unlock(tsk);
-        mutex_unlock(&callback_mutex);
 
         return mask;
 }