fs/xfs/xfs_refcache.h

   1 /*
   2  * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32 #ifndef __XFS_REFCACHE_H__
  33 #define __XFS_REFCACHE_H__
  34
  35 #ifdef HAVE_REFCACHE
  36 /*
  37  * Maximum size (in inodes) for the NFS reference cache
  38  */
  39 #define XFS_REFCACHE_SIZE_MAX   512
  40
  41 struct xfs_inode;
  42 struct xfs_mount;
  43
  44 extern void xfs_refcache_insert(struct xfs_inode *);
  45 extern void xfs_refcache_purge_ip(struct xfs_inode *);
  46 extern void xfs_refcache_purge_mp(struct xfs_mount *);
  47 extern void xfs_refcache_purge_some(struct xfs_mount *);
  48 extern void xfs_refcache_resize(int);
  49 extern void xfs_refcache_destroy(void);
  50
  51 extern void xfs_refcache_iunlock(struct xfs_inode *, uint);
  52
  53 #else
  54
  55 #define xfs_refcache_insert(ip)         do { } while (0)
  56 #define xfs_refcache_purge_ip(ip)       do { } while (0)
  57 #define xfs_refcache_purge_mp(mp)       do { } while (0)
  58 #define xfs_refcache_purge_some(mp)     do { } while (0)
  59 #define xfs_refcache_resize(size)       do { } while (0)
  60 #define xfs_refcache_destroy()          do { } while (0)
  61
  62 #define xfs_refcache_iunlock(ip, flags) xfs_iunlock(ip, flags)
  63
  64 #endif
  65
  66 #endif  /* __XFS_REFCACHE_H__ */