1 /* $NetBSD: uvm_swap.h,v 1.18 2011/04/27 00:35:52 rmind 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * from: Id: uvm_swap.h,v 1.1.2.6 1997/12/15 05:39:31 mrg Exp 29 */ 30 31 #ifndef _UVM_UVM_SWAP_H_ 32 #define _UVM_UVM_SWAP_H_ 33 34 #define SWSLOT_BAD (-1) 35 36 #ifdef _KERNEL 37 #if defined(_KERNEL_OPT) 38 #include "opt_vmswap.h" 39 #endif 40 41 struct swapent; 42 43 #if defined(VMSWAP) 44 int uvm_swap_get(struct vm_page *, int, int); 45 int uvm_swap_put(int, struct vm_page **, int, int); 46 int uvm_swap_alloc(int *, bool); 47 void uvm_swap_free(int, int); 48 void uvm_swap_markbad(int, int); 49 bool uvm_swapisfull(void); 50 #else /* defined(VMSWAP) */ 51 #define uvm_swapisfull() true 52 #endif /* defined(VMSWAP) */ 53 54 #endif /* _KERNEL */ 55 56 #endif /* _UVM_UVM_SWAP_H_ */ 57