The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*      $NetBSD: uvm_swap.h,v 1.8 2003/08/11 16:33:31 pk Exp $  */
    2 
    3 /*
    4  * Copyright (c) 1997 Matthew R. Green
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. The name of the author may not be used to endorse or promote products
   16  *    derived from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  * from: Id: uvm_swap.h,v 1.1.2.6 1997/12/15 05:39:31 mrg Exp
   31  */
   32 
   33 #ifndef _UVM_UVM_SWAP_H_
   34 #define _UVM_UVM_SWAP_H_
   35 
   36 #define SWSLOT_BAD      (-1)
   37 
   38 #ifdef _KERNEL
   39 
   40 struct swapent;
   41 
   42 int     uvm_swap_get(struct vm_page *, int, int);
   43 int     uvm_swap_put(int, struct vm_page **, int, int);
   44 int     uvm_swap_alloc(int *, boolean_t);
   45 void    uvm_swap_free(int, int);
   46 void    uvm_swap_markbad(int, int);
   47 void    uvm_swap_stats(int, struct swapent *, int, register_t *);
   48 boolean_t       uvm_swapisfull(void);
   49 
   50 #endif /* _KERNEL */
   51 
   52 #endif /* _UVM_UVM_SWAP_H_ */

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