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uvm_pager_i.h
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uvm_pager_i.h
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/* $NetBSD: uvm_pager_i.h,v 1.12 2002/12/01 22:58:43 matt Exp $ */
/*
*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles D. Cranor and
* Washington University.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* from: Id: uvm_pager_i.h,v 1.1.2.2 1997/10/09 23:05:46 chuck Exp
*/
/*
* uvm_pager_i.h
*/
/*
* inline functions [maybe]
*/
#if defined(UVM_PAGER_INLINE) || defined(UVM_PAGER)
#ifndef _UVM_UVM_PAGER_I_H_
#define _UVM_UVM_PAGER_I_H_
/*
* uvm_pageratop: convert KVAs in the pager map back to their page
* structures.
*/
PAGER_INLINE struct vm_page *
uvm_pageratop(kva)
vaddr_t kva;
{
struct vm_page *pg;
paddr_t pa;
boolean_t rv;
rv = pmap_extract(pmap_kernel(), kva, &pa);
KASSERT(rv);
pg = PHYS_TO_VM_PAGE(pa);
KASSERT(pg != NULL);
return (pg);
}
#endif /* _UVM_UVM_PAGER_I_H_ */
#endif /* defined(UVM_PAGER_INLINE) || defined(UVM_PAGER) */