Annotation of sys/uvm/uvm_pager_i.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: uvm_pager_i.h,v 1.10 2001/12/19 08:58:07 art Exp $ */
2: /* $NetBSD: uvm_pager_i.h,v 1.10 2000/11/25 06:28:00 chs Exp $ */
3:
4: /*
5: *
6: * Copyright (c) 1997 Charles D. Cranor and Washington University.
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: * 3. All advertising materials mentioning features or use of this software
18: * must display the following acknowledgement:
19: * This product includes software developed by Charles D. Cranor and
20: * Washington University.
21: * 4. The name of the author may not be used to endorse or promote products
22: * derived from this software without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34: *
35: * from: Id: uvm_pager_i.h,v 1.1.2.2 1997/10/09 23:05:46 chuck Exp
36: */
37:
38: #ifndef _UVM_UVM_PAGER_I_H_
39: #define _UVM_UVM_PAGER_I_H_
40:
41: /*
42: * uvm_pager_i.h
43: */
44:
45: /*
46: * inline functions [maybe]
47: */
48:
49: #if defined(UVM_PAGER_INLINE) || defined(UVM_PAGER)
50:
51: /*
52: * uvm_pageratop: convert KVAs in the pager map back to their page
53: * structures.
54: */
55:
56: PAGER_INLINE struct vm_page *
57: uvm_pageratop(kva)
58: vaddr_t kva;
59: {
60: struct vm_page *pg;
61: paddr_t pa;
62: boolean_t rv;
63:
64: rv = pmap_extract(pmap_kernel(), kva, &pa);
65: KASSERT(rv);
66: pg = PHYS_TO_VM_PAGE(pa);
67: KASSERT(pg != NULL);
68: return (pg);
69: }
70:
71: #endif /* defined(UVM_PAGER_INLINE) || defined(UVM_PAGER) */
72:
73: #endif /* _UVM_UVM_PAGER_I_H_ */
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