57 lines
2 KiB
C
57 lines
2 KiB
C
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/* $NetBSD: uvm_loan.h,v 1.17 2011/02/02 15:13:34 chuck Exp $ */
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/*
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* Copyright (c) 1997 Charles D. Cranor and Washington University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: Id: uvm_loan.h,v 1.1.4.1 1997/12/08 16:07:14 chuck Exp
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*/
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#ifndef _UVM_UVM_LOAN_H_
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#define _UVM_UVM_LOAN_H_
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#ifdef _KERNEL
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/*
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* flags for uvm_loan()
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*/
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#define UVM_LOAN_TOANON 0x1 /* loan to anon */
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#define UVM_LOAN_TOPAGE 0x2 /* loan to page */
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/*
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* loan prototypes
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*/
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void uvm_loan_init(void);
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int uvm_loan(struct vm_map *, vaddr_t, vsize_t, void *, int);
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void uvm_unloan(void *, int, int);
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int uvm_loanuobjpages(struct uvm_object *, voff_t, int,
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struct vm_page **);
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struct vm_page *uvm_loanbreak(struct vm_page *);
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int uvm_loanbreak_anon(struct vm_anon *, struct uvm_object *);
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#endif /* _KERNEL */
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#endif /* _UVM_UVM_LOAN_H_ */
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