From 519e3c1163ce2b2d510b76b0f5b374198f9378f3 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Wed, 20 Mar 2013 03:28:21 +0800 Subject: [PATCH] workqueue: avoid false negative in assert_manager_or_pool_lock() If lockdep complains something for other subsystem, lockdep_is_held() can be false negative, so we need to also test debug_locks before triggering WARN. Signed-off-by: Lai Jiangshan Signed-off-by: Tejun Heo --- kernel/workqueue.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/workqueue.c b/kernel/workqueue.c index b6c5a52..47f2587 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -305,7 +305,8 @@ static void copy_workqueue_attrs(struct workqueue_attrs *to, #ifdef CONFIG_LOCKDEP #define assert_manager_or_pool_lock(pool) \ - WARN_ONCE(!lockdep_is_held(&(pool)->manager_mutex) && \ + WARN_ONCE(debug_locks && \ + !lockdep_is_held(&(pool)->manager_mutex) && \ !lockdep_is_held(&(pool)->lock), \ "pool->manager_mutex or ->lock should be held") #else -- 2.7.4