root / lab4 / .minix-src / include / uvm / uvm_loan.h @ 14
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| 1 | 13 | up20180614 | /* $NetBSD: uvm_loan.h,v 1.17 2011/02/02 15:13:34 chuck Exp $ */
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| 2 | |||
| 3 | /*
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| 4 | * Copyright (c) 1997 Charles D. Cranor and Washington University.
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| 5 | * All rights reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | *
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 26 | *
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| 27 | * from: Id: uvm_loan.h,v 1.1.4.1 1997/12/08 16:07:14 chuck Exp
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| 28 | */
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| 29 | |||
| 30 | #ifndef _UVM_UVM_LOAN_H_
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| 31 | #define _UVM_UVM_LOAN_H_
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| 32 | |||
| 33 | #ifdef _KERNEL
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| 34 | |||
| 35 | /*
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| 36 | * flags for uvm_loan()
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| 37 | */
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| 38 | |||
| 39 | #define UVM_LOAN_TOANON 0x1 /* loan to anon */ |
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| 40 | #define UVM_LOAN_TOPAGE 0x2 /* loan to page */ |
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| 41 | |||
| 42 | /*
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| 43 | * loan prototypes
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| 44 | */
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| 45 | |||
| 46 | void uvm_loan_init(void); |
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| 47 | int uvm_loan(struct vm_map *, vaddr_t, vsize_t, void *, int); |
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| 48 | void uvm_unloan(void *, int, int); |
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| 49 | int uvm_loanuobjpages(struct uvm_object *, voff_t, int, |
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| 50 | struct vm_page **);
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| 51 | struct vm_page *uvm_loanbreak(struct vm_page *); |
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| 52 | int uvm_loanbreak_anon(struct vm_anon *, struct uvm_object *); |
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| 53 | |||
| 54 | #endif /* _KERNEL */ |
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| 55 | |||
| 56 | #endif /* _UVM_UVM_LOAN_H_ */ |