kernel/cpuset: current_cpuset_is_being_rebound can be boolean

Make current_cpuset_is_being_rebound return bool due to this particular
function only using either one or zero as its return value.

No functional change.

Link: http://lkml.kernel.org/r/1513266622-15860-4-git-send-email-baiyaowei@cmss.chinamobile.com
Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/cpuset.h

@@ -112,7 +112,7 @@ static inline int cpuset_do_slab_mem_spread(void)
 	return task_spread_slab(current);
 }
 
-extern int current_cpuset_is_being_rebound(void);
+extern bool current_cpuset_is_being_rebound(void);
 
 extern void rebuild_sched_domains(void);
 
@@ -247,9 +247,9 @@ static inline int cpuset_do_slab_mem_spread(void)
 	return 0;
 }
 
-static inline int current_cpuset_is_being_rebound(void)
+static inline bool current_cpuset_is_being_rebound(void)
 {
-	return 0;
+	return false;
 }
 
 static inline void rebuild_sched_domains(void)

kernel/cgroup/cpuset.c

@@ -1254,9 +1254,9 @@ done:
 	return retval;
 }
 
-int current_cpuset_is_being_rebound(void)
+bool current_cpuset_is_being_rebound(void)
 {
-	int ret;
+	bool ret;
 
 	rcu_read_lock();
 	ret = task_cs(current) == cpuset_being_rebound;