include/sys/fs/swapnode.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30
  31 #ifndef _SYS_FS_SWAPNODE_H
  32 #define _SYS_FS_SWAPNODE_H
  33
  34 #ifdef  __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 /*
  39  * pointer to swapfs global data structures
  40  */
  41 extern pgcnt_t swapfs_minfree;          /* amount of availrmem (in pages) */
  42                                         /* that is unavailable to swapfs */
  43 extern pgcnt_t swapfs_desfree;
  44
  45 extern pgcnt_t swapfs_reserve;          /* amount of availrmem (in pages) */
  46                                         /* that is unavailable for swap */
  47                                         /* reservation to non-priv processes */
  48
  49 extern const struct vnodeops swap_vnodeops;
  50 extern struct vnode *swapfs_getvp(ulong_t);
  51
  52 #ifdef SWAPFS_DEBUG
  53 extern int swapfs_debug;
  54 #define SWAPFS_PRINT(X, S, Y1, Y2, Y3, Y4, Y5)  \
  55         if (swapfs_debug & (X))                 \
  56                 printf(S, Y1, Y2, Y3, Y4, Y5);
  57 #define SWAP_SUBR       0x01
  58 #define SWAP_VOPS       0x02
  59 #define SWAP_VFSOPS     0x04
  60 #define SWAP_PGC                0x08
  61 #define SWAP_PUTP       0x10
  62 #else   /* SWAPFS_DEBUG */
  63 #define SWAPFS_PRINT(X, S, Y1, Y2, Y3, Y4, Y5)
  64 #endif  /* SWAPFS_DEBUG */
  65
  66 #ifdef  __cplusplus
  67 }
  68 #endif
  69
  70 #endif  /* _SYS_FS_SWAPNODE_H */