/*

   * 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_TRANS_SPACE_H__
  #define __XFS_TRANS_SPACE_H__
  
  /*
   * Components of space reservations.
   */
  #define XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)    \
  		(((mp)->m_alloc_mxr[0]) - ((mp)->m_alloc_mnr[0]))
  #define	XFS_EXTENTADD_SPACE_RES(mp,w)	(XFS_BM_MAXLEVELS(mp,w) - 1)
  #define XFS_NEXTENTADD_SPACE_RES(mp,b,w)\
  	(((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \
  	  XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \
  	  XFS_EXTENTADD_SPACE_RES(mp,w))
  #define	XFS_DAENTER_1B(mp,w)	((w) == XFS_DATA_FORK ? (mp)->m_dirblkfsbs : 1)
  #define	XFS_DAENTER_DBS(mp,w)	\

  	(XFS_DA_NODE_MAXDEPTH + (((w) == XFS_DATA_FORK) ? 2 : 0))

  #define	XFS_DAENTER_BLOCKS(mp,w)	\
  	(XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w))
  #define	XFS_DAENTER_BMAP1B(mp,w)	\
  	XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w)
  #define	XFS_DAENTER_BMAPS(mp,w)		\
  	(XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w))
  #define	XFS_DAENTER_SPACE_RES(mp,w)	\
  	(XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w))
  #define	XFS_DAREMOVE_SPACE_RES(mp,w)	XFS_DAENTER_BMAPS(mp,w)

  #define	XFS_DIRENTER_MAX_SPLIT(mp,nl)	1

  #define	XFS_DIRENTER_SPACE_RES(mp,nl)	\
  	(XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \
  	 XFS_DIRENTER_MAX_SPLIT(mp,nl))
  #define	XFS_DIRREMOVE_SPACE_RES(mp)	\
  	XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK)
  #define	XFS_IALLOC_SPACE_RES(mp)	\

  	(XFS_IALLOC_BLOCKS(mp) + (mp)->m_in_maxlevels - 1)

  
  /*
   * Space reservation values for various transactions.
   */
  #define	XFS_ADDAFORK_SPACE_RES(mp)	\

  	((mp)->m_dirblkfsbs + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK))

  #define	XFS_ATTRRM_SPACE_RES(mp)	\
  	XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK)
  /* This macro is not used - see inline code in xfs_attr_set */
  #define	XFS_ATTRSET_SPACE_RES(mp, v)	\
  	(XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v))
  #define	XFS_CREATE_SPACE_RES(mp,nl)	\
  	(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  #define	XFS_DIOSTRAT_SPACE_RES(mp, v)	\
  	(XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v))
  #define	XFS_GROWFS_SPACE_RES(mp)	\
  	(2 * XFS_AG_MAXLEVELS(mp))
  #define	XFS_GROWFSRT_SPACE_RES(mp,b)	\
  	((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK))
  #define	XFS_LINK_SPACE_RES(mp,nl)	\
  	XFS_DIRENTER_SPACE_RES(mp,nl)
  #define	XFS_MKDIR_SPACE_RES(mp,nl)	\
  	(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  #define	XFS_QM_DQALLOC_SPACE_RES(mp)	\
  	(XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \
  	 XFS_DQUOT_CLUSTER_SIZE_FSB)
  #define	XFS_QM_QINOCREATE_SPACE_RES(mp)	\
  	XFS_IALLOC_SPACE_RES(mp)
  #define	XFS_REMOVE_SPACE_RES(mp)	\
  	XFS_DIRREMOVE_SPACE_RES(mp)
  #define	XFS_RENAME_SPACE_RES(mp,nl)	\
  	(XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  #define	XFS_SYMLINK_SPACE_RES(mp,nl,b)	\
  	(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b))
  
  #endif	/* __XFS_TRANS_SPACE_H__ */