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[PATCH] refcount: trim headers




kernel.h is not needed, but compiler.h is.

mutex.h is not needed only a forward declaration.

spinlock.h is not needed, spinlock_types.h is enough.

Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
---

 include/linux/refcount.h |    7 ++++---
 lib/refcount.c           |    2 ++
 2 files changed, 6 insertions(+), 3 deletions(-)

--- a/include/linux/refcount.h
+++ b/include/linux/refcount.h
@@ -3,9 +3,10 @@
 #define _LINUX_REFCOUNT_H
 
 #include <linux/atomic.h>
-#include <linux/mutex.h>
-#include <linux/spinlock.h>
-#include <linux/kernel.h>
+#include <linux/compiler.h>
+#include <linux/spinlock_types.h>
+
+struct mutex;
 
 /**
  * struct refcount_t - variant of atomic_t specialized for reference counts
--- a/lib/refcount.c
+++ b/lib/refcount.c
@@ -35,7 +35,9 @@
  *
  */
 
+#include <linux/mutex.h>
 #include <linux/refcount.h>
+#include <linux/spinlock.h>
 #include <linux/bug.h>
 
 #ifdef CONFIG_REFCOUNT_FULL