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-rw-r--r--kernel/mutex.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/mutex.c b/kernel/mutex.c
index bcdc9ac..12c779d 100644
--- a/kernel/mutex.c
+++ b/kernel/mutex.c
@@ -34,6 +34,7 @@
/***
* mutex_init - initialize the mutex
* @lock: the mutex to be initialized
+ * @key: the lock_class_key for the class; used by mutex lock debugging
*
* Initialize the mutex to unlocked state.
*
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