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diff --git a/vm/vm_pageout.h b/vm/vm_pageout.h
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+/*
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *	File:	vm/vm_pageout.h
+ *	Author:	Avadis Tevanian, Jr.
+ *	Date:	1986
+ *
+ *	Declarations for the pageout daemon interface.
+ */
+
+#ifndef	_VM_VM_PAGEOUT_H_
+#define _VM_VM_PAGEOUT_H_
+
+#include <vm/vm_page.h>
+
+/*
+ *	Exported routines.
+ */
+
+extern vm_page_t vm_pageout_setup(vm_page_t, vm_offset_t, vm_object_t,
+				  vm_offset_t, boolean_t);
+extern void vm_pageout_page(vm_page_t, boolean_t, boolean_t);
+
+extern void vm_pageout(void) __attribute__((noreturn));
+
+extern void vm_pageout_start(void);
+
+extern void vm_pageout_resume(void);
+
+#endif	/* _VM_VM_PAGEOUT_H_ */