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      1 /*	$NetBSD: uvm_loan.h,v 1.17 2011/02/02 15:13:34 chuck Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997 Charles D. Cranor and Washington University.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  *
     27  * from: Id: uvm_loan.h,v 1.1.4.1 1997/12/08 16:07:14 chuck Exp
     28  */
     29 
     30 #ifndef _UVM_UVM_LOAN_H_
     31 #define _UVM_UVM_LOAN_H_
     32 
     33 #ifdef _KERNEL
     34 
     35 /*
     36  * flags for uvm_loan()
     37  */
     38 
     39 #define UVM_LOAN_TOANON		0x1		/* loan to anon */
     40 #define UVM_LOAN_TOPAGE		0x2		/* loan to page */
     41 
     42 /*
     43  * loan prototypes
     44  */
     45 
     46 void uvm_loan_init(void);
     47 int uvm_loan(struct vm_map *, vaddr_t, vsize_t, void *, int);
     48 void uvm_unloan(void *, int, int);
     49 int uvm_loanuobjpages(struct uvm_object *, voff_t, int,
     50     struct vm_page **);
     51 struct vm_page *uvm_loanbreak(struct vm_page *);
     52 int uvm_loanbreak_anon(struct vm_anon *, struct uvm_object *);
     53 
     54 #endif /* _KERNEL */
     55 
     56 #endif /* _UVM_UVM_LOAN_H_ */
     57