Annotation of sys/uvm/uvm_pager_i.h, Revision 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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