[RFC 4/6] workqueue: Convert for_each_wq to use built-in list check

["Joel Fernandes (Google)" <joel@xxxxxxxxxxxxxxxxx>]

list_for_each_entry_rcu now has support to check for RCU reader sections
as well as lock. Just use the support in it, instead of explictly
checking in the caller.

Signed-off-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
---
 kernel/workqueue.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 9657315405de..91ed7aca16e5 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -424,9 +424,8 @@ static void workqueue_sysfs_unregister(struct workqueue_struct *wq);
  * ignored.
  */
 #define for_each_pwq(pwq, wq)						\
-	list_for_each_entry_rcu((pwq), &(wq)->pwqs, pwqs_node)		\
-		if (({ assert_rcu_or_wq_mutex(wq); false; })) { }	\
-		else
+	list_for_each_entry_rcu((pwq), &(wq)->pwqs, pwqs_node,		\
+				 lock_is_held(&(wq->mutex).dep_map))
 
 #ifdef CONFIG_DEBUG_OBJECTS_WORK
 
-- 
2.22.0.rc1.311.g5d7573a151-goog