/*

   * Copyright (c) 2000-2005 Silicon Graphics, Inc.
   * All Rights Reserved.

   *

   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License as

   * published by the Free Software Foundation.
   *

   * This program is distributed in the hope that it would be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.

   *

   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write the Free Software Foundation,
   * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

   */
  #ifndef __XFS_VNODE_H__
  #define __XFS_VNODE_H__

  #include "xfs_fs.h"

  struct file;

  struct xfs_inode;

  struct xfs_iomap;
  struct attrlist_cursor_kern;

  /*

   * Return values for xfs_inactive.  A return value of

   * VN_INACTIVE_NOCACHE implies that the file system behavior
   * has disassociated its state and bhv_desc_t from the vnode.
   */
  #define	VN_INACTIVE_CACHE	0
  #define	VN_INACTIVE_NOCACHE	1
  
  /*

   * Flags for read/write calls - same values as IRIX
   */

  #define IO_ISDIRECT	0x00004		/* bypass page cache */
  #define IO_INVIS	0x00020		/* don't update inode timestamps */

  #define XFS_IO_FLAGS \
  	{ IO_ISDIRECT,	"DIRECT" }, \
  	{ IO_INVIS,	"INVIS"}

  /*

   * Flush/Invalidate options for vop_toss/flush/flushinval_pages.

   */
  #define FI_NONE			0	/* none */
  #define FI_REMAPF		1	/* Do a remapf prior to the operation */
  #define FI_REMAPF_LOCKED	2	/* Do a remapf prior to the operation.
  					   Prevent VM access to the pages until
  					   the operation completes. */

  /*

   * Some useful predicates.
   */

  #define VN_MAPPED(vp)	mapping_mapped(vp->i_mapping)
  #define VN_CACHED(vp)	(vp->i_mapping->nrpages)
  #define VN_DIRTY(vp)	mapping_tagged(vp->i_mapping, \

  					PAGECACHE_TAG_DIRTY)

  #endif	/* __XFS_VNODE_H__ */