LXR linux/fs/xfs/libxfs/xfs_trans

   1/*
   2 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
   3 * All Rights Reserved.
   4 *
   5 * This program is free software; you can redistribute it and/or
   6 * modify it under the terms of the GNU General Public License as
   7 * published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it would be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write the Free Software Foundation,
  16 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 */
  18#ifndef __XFS_TRANS_SPACE_H__
  19#define __XFS_TRANS_SPACE_H__
  20
  21/*
  22 * Components of space reservations.
  23 */
  24#define XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)    \
  25                (((mp)->m_rmap_mxr[0]) - ((mp)->m_rmap_mnr[0]))
  26#define XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)    \
  27                (((mp)->m_alloc_mxr[0]) - ((mp)->m_alloc_mnr[0]))
  28#define XFS_EXTENTADD_SPACE_RES(mp,w)   (XFS_BM_MAXLEVELS(mp,w) - 1)
  29#define XFS_NEXTENTADD_SPACE_RES(mp,b,w)\
  30        (((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \
  31          XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \
  32          XFS_EXTENTADD_SPACE_RES(mp,w))
  33#define XFS_SWAP_RMAP_SPACE_RES(mp,b,w)\
  34        (((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \
  35          XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \
  36          XFS_EXTENTADD_SPACE_RES(mp,w) + \
  37         ((b + XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) - 1) / \
  38          XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)) * \
  39          (mp)->m_rmap_maxlevels)
  40#define XFS_DAENTER_1B(mp,w)    \
  41        ((w) == XFS_DATA_FORK ? (mp)->m_dir_geo->fsbcount : 1)
  42#define XFS_DAENTER_DBS(mp,w)   \
  43        (XFS_DA_NODE_MAXDEPTH + (((w) == XFS_DATA_FORK) ? 2 : 0))
  44#define XFS_DAENTER_BLOCKS(mp,w)        \
  45        (XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w))
  46#define XFS_DAENTER_BMAP1B(mp,w)        \
  47        XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w)
  48#define XFS_DAENTER_BMAPS(mp,w)         \
  49        (XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w))
  50#define XFS_DAENTER_SPACE_RES(mp,w)     \
  51        (XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w))
  52#define XFS_DAREMOVE_SPACE_RES(mp,w)    XFS_DAENTER_BMAPS(mp,w)
  53#define XFS_DIRENTER_MAX_SPLIT(mp,nl)   1
  54#define XFS_DIRENTER_SPACE_RES(mp,nl)   \
  55        (XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \
  56         XFS_DIRENTER_MAX_SPLIT(mp,nl))
  57#define XFS_DIRREMOVE_SPACE_RES(mp)     \
  58        XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK)
  59#define XFS_IALLOC_SPACE_RES(mp)        \
  60        ((mp)->m_ialloc_blks + \
  61         (xfs_sb_version_hasfinobt(&mp->m_sb) ? 2 : 1 * \
  62          ((mp)->m_in_maxlevels - 1)))
  63
  64/*
  65 * Space reservation values for various transactions.
  66 */
  67#define XFS_ADDAFORK_SPACE_RES(mp)      \
  68        ((mp)->m_dir_geo->fsbcount + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK))
  69#define XFS_ATTRRM_SPACE_RES(mp)        \
  70        XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK)
  71/* This macro is not used - see inline code in xfs_attr_set */
  72#define XFS_ATTRSET_SPACE_RES(mp, v)    \
  73        (XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v))
  74#define XFS_CREATE_SPACE_RES(mp,nl)     \
  75        (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  76#define XFS_DIOSTRAT_SPACE_RES(mp, v)   \
  77        (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v))
  78#define XFS_GROWFS_SPACE_RES(mp)        \
  79        (2 * (mp)->m_ag_maxlevels)
  80#define XFS_GROWFSRT_SPACE_RES(mp,b)    \
  81        ((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK))
  82#define XFS_LINK_SPACE_RES(mp,nl)       \
  83        XFS_DIRENTER_SPACE_RES(mp,nl)
  84#define XFS_MKDIR_SPACE_RES(mp,nl)      \
  85        (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  86#define XFS_QM_DQALLOC_SPACE_RES(mp)    \
  87        (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \
  88         XFS_DQUOT_CLUSTER_SIZE_FSB)
  89#define XFS_QM_QINOCREATE_SPACE_RES(mp) \
  90        XFS_IALLOC_SPACE_RES(mp)
  91#define XFS_REMOVE_SPACE_RES(mp)        \
  92        XFS_DIRREMOVE_SPACE_RES(mp)
  93#define XFS_RENAME_SPACE_RES(mp,nl)     \
  94        (XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  95#define XFS_SYMLINK_SPACE_RES(mp,nl,b)  \
  96        (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b))
  97#define XFS_IFREE_SPACE_RES(mp)         \
  98        (xfs_sb_version_hasfinobt(&mp->m_sb) ? (mp)->m_in_maxlevels : 0)
  99
 100
 101#endif  /* __XFS_TRANS_SPACE_H__ */
 102