fs/xfs/xfs_trans_space.h

   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_EXTENTS_PER_BLOCK(mp)    \
  25                 (((mp)->m_alloc_mxr[0]) - ((mp)->m_alloc_mnr[0]))
  26 #define XFS_EXTENTADD_SPACE_RES(mp,w)   (XFS_BM_MAXLEVELS(mp,w) - 1)
  27 #define XFS_NEXTENTADD_SPACE_RES(mp,b,w)\
  28         (((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \
  29           XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \
  30           XFS_EXTENTADD_SPACE_RES(mp,w))
  31 #define XFS_DAENTER_1B(mp,w)    ((w) == XFS_DATA_FORK ? (mp)->m_dirblkfsbs : 1)
  32 #define XFS_DAENTER_DBS(mp,w)   \
  33         (XFS_DA_NODE_MAXDEPTH + (((w) == XFS_DATA_FORK) ? 2 : 0))
  34 #define XFS_DAENTER_BLOCKS(mp,w)        \
  35         (XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w))
  36 #define XFS_DAENTER_BMAP1B(mp,w)        \
  37         XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w)
  38 #define XFS_DAENTER_BMAPS(mp,w)         \
  39         (XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w))
  40 #define XFS_DAENTER_SPACE_RES(mp,w)     \
  41         (XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w))
  42 #define XFS_DAREMOVE_SPACE_RES(mp,w)    XFS_DAENTER_BMAPS(mp,w)
  43 #define XFS_DIRENTER_MAX_SPLIT(mp,nl)   1
  44 #define XFS_DIRENTER_SPACE_RES(mp,nl)   \
  45         (XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \
  46          XFS_DIRENTER_MAX_SPLIT(mp,nl))
  47 #define XFS_DIRREMOVE_SPACE_RES(mp)     \
  48         XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK)
  49 #define XFS_IALLOC_SPACE_RES(mp)        \
  50         (XFS_IALLOC_BLOCKS(mp) + (mp)->m_in_maxlevels - 1)
  51
  52 /*
  53  * Space reservation values for various transactions.
  54  */
  55 #define XFS_ADDAFORK_SPACE_RES(mp)      \
  56         ((mp)->m_dirblkfsbs + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK))
  57 #define XFS_ATTRRM_SPACE_RES(mp)        \
  58         XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK)
  59 /* This macro is not used - see inline code in xfs_attr_set */
  60 #define XFS_ATTRSET_SPACE_RES(mp, v)    \
  61         (XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v))
  62 #define XFS_CREATE_SPACE_RES(mp,nl)     \
  63         (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  64 #define XFS_DIOSTRAT_SPACE_RES(mp, v)   \
  65         (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v))
  66 #define XFS_GROWFS_SPACE_RES(mp)        \
  67         (2 * XFS_AG_MAXLEVELS(mp))
  68 #define XFS_GROWFSRT_SPACE_RES(mp,b)    \
  69         ((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK))
  70 #define XFS_LINK_SPACE_RES(mp,nl)       \
  71         XFS_DIRENTER_SPACE_RES(mp,nl)
  72 #define XFS_MKDIR_SPACE_RES(mp,nl)      \
  73         (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  74 #define XFS_QM_DQALLOC_SPACE_RES(mp)    \
  75         (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \
  76          XFS_DQUOT_CLUSTER_SIZE_FSB)
  77 #define XFS_QM_QINOCREATE_SPACE_RES(mp) \
  78         XFS_IALLOC_SPACE_RES(mp)
  79 #define XFS_REMOVE_SPACE_RES(mp)        \
  80         XFS_DIRREMOVE_SPACE_RES(mp)
  81 #define XFS_RENAME_SPACE_RES(mp,nl)     \
  82         (XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  83 #define XFS_SYMLINK_SPACE_RES(mp,nl,b)  \
  84         (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b))
  85
  86 #endif  /* __XFS_TRANS_SPACE_H__ */