locking/mutex: Move the 'struct mutex_waiter' definition from <linux/mutex.h> to...

Move the mutex waiter declaration from the public <linux/mutex.h> header
to the internal kernel/locking/mutex.h header.

There is no reason to expose it outside of the core code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210815211304.054325923@linutronix.de

diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index e193235..62bafee 100644 (file)
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -74,19 +74,6 @@ struct ww_mutex {
 #endif
 };
 
-/*
- * This is the control structure for tasks blocked on mutex,
- * which resides on the blocked task's kernel stack:
- */
-struct mutex_waiter {
-       struct list_head        list;
-       struct task_struct      *task;
-       struct ww_acquire_ctx   *ww_ctx;
-#ifdef CONFIG_DEBUG_MUTEXES
-       void                    *magic;
-#endif
-};
-
 #ifdef CONFIG_DEBUG_MUTEXES
 
 #define __DEBUG_MUTEX_INITIALIZER(lockname)                            \

diff --git a/kernel/locking/mutex.h b/kernel/locking/mutex.h
index 586e4f1..0b2a79c 100644 (file)
--- a/kernel/locking/mutex.h
+++ b/kernel/locking/mutex.h
@@ -7,6 +7,19 @@
  *  Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
  */
 
+/*
+ * This is the control structure for tasks blocked on mutex, which resides
+ * on the blocked task's kernel stack:
+ */
+struct mutex_waiter {
+       struct list_head        list;
+       struct task_struct      *task;
+       struct ww_acquire_ctx   *ww_ctx;
+#ifdef CONFIG_DEBUG_MUTEXES
+       void                    *magic;
+#endif
+};
+
 #ifdef CONFIG_DEBUG_MUTEXES
 extern void debug_mutex_lock_common(struct mutex *lock,
                                    struct mutex_waiter *waiter);