2ed88fe090
- fix the loaned case in uvm_pagefree(). - redo uvmexp.swpgonly accounting to work with page loaning. add an assertion before each place we adjust uvmexp.swpgonly. - fix uvm_km_pgremove() to always free any swap space associated with the range being removed. - get rid of UVM_LOAN_WIRED flag. instead, we just make sure that pages loaned to the kernel are never on the page queues. this allows us to assert that pages are not loaned and wired at the same time. - add yet more assertions.
59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
/* $NetBSD: uvm_loan.h,v 1.9 2001/11/06 08:07:51 chs Exp $ */
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/*
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles D. Cranor and
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* Washington University.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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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int uvm_loan __P((struct vm_map *, vaddr_t, vsize_t, void *, int));
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void uvm_unloan __P((void *, int, int));
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#endif /* _KERNEL */
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#endif /* _UVM_UVM_LOAN_H_ */
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