FreeBSD/Linux Kernel Cross Reference
sys/uvm/uvm_pager_i.h

     /*      $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) */

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