When we fail to mutex_trylock(), we release the pool spin_lock and do
mutex_lock(). After that, we should regrab the pool spin_lock, but,
regrabbing is missed in current code. So correct it.
Cc: Lai Jiangshan <la...@cn.fujitsu.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo....@lge.com>
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 154aa12..e02994f 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -2058,6 +2058,7 @@ static bool manage_workers(struct worker *worker)
if (unlikely(!mutex_trylock(&pool->manager_mutex))) {
spin_unlock_irq(&pool->lock);
mutex_lock(&pool->manager_mutex);
+ spin_lock_irq(&pool->lock);
ret = true;
}
--
1.7.9.5
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