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-rw-r--r--include/linux/mutex.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index ae197cc00cc8..dcd185cbfe79 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -65,6 +65,17 @@ struct mutex {
#endif
};
+struct ww_class;
+struct ww_acquire_ctx;
+
+struct ww_mutex {
+ struct mutex base;
+ struct ww_acquire_ctx *ctx;
+#ifdef CONFIG_DEBUG_MUTEXES
+ struct ww_class *ww_class;
+#endif
+};
+
/*
* This is the control structure for tasks blocked on mutex,
* which resides on the blocked task's kernel stack: