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 + \
  34          ((XFS_DIR_IS_V2(mp) && (w) == XFS_DATA_FORK) ? 2 : 0))
  35 #define XFS_DAENTER_BLOCKS(mp,w)        \
  36         (XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w))
  37 #define XFS_DAENTER_BMAP1B(mp,w)        \
  38         XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w)
  39 #define XFS_DAENTER_BMAPS(mp,w)         \
  40         (XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w))
  41 #define XFS_DAENTER_SPACE_RES(mp,w)     \
  42         (XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w))
  43 #define XFS_DAREMOVE_SPACE_RES(mp,w)    XFS_DAENTER_BMAPS(mp,w)
  44 #define XFS_DIRENTER_MAX_SPLIT(mp,nl)   \
  45         (((mp)->m_sb.sb_blocksize == 512 && \
  46           XFS_DIR_IS_V1(mp) && \
  47           (nl) >= XFS_DIR_LEAF_CAN_DOUBLE_SPLIT_LEN) ? 2 : 1)
  48 #define XFS_DIRENTER_SPACE_RES(mp,nl)   \
  49         (XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \
  50          XFS_DIRENTER_MAX_SPLIT(mp,nl))
  51 #define XFS_DIRREMOVE_SPACE_RES(mp)     \
  52         XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK)
  53 #define XFS_IALLOC_SPACE_RES(mp)        \
  54         (XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp)-1)
  55
  56 /*
  57  * Space reservation values for various transactions.
  58  */
  59 #define XFS_ADDAFORK_SPACE_RES(mp)      \
  60         ((mp)->m_dirblkfsbs + \
  61          (XFS_DIR_IS_V1(mp) ? 0 : XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK)))
  62 #define XFS_ATTRRM_SPACE_RES(mp)        \
  63         XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK)
  64 /* This macro is not used - see inline code in xfs_attr_set */
  65 #define XFS_ATTRSET_SPACE_RES(mp, v)    \
  66         (XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v))
  67 #define XFS_CREATE_SPACE_RES(mp,nl)     \
  68         (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  69 #define XFS_DIOSTRAT_SPACE_RES(mp, v)   \
  70         (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v))
  71 #define XFS_GROWFS_SPACE_RES(mp)        \
  72         (2 * XFS_AG_MAXLEVELS(mp))
  73 #define XFS_GROWFSRT_SPACE_RES(mp,b)    \
  74         ((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK))
  75 #define XFS_LINK_SPACE_RES(mp,nl)       \
  76         XFS_DIRENTER_SPACE_RES(mp,nl)
  77 #define XFS_MKDIR_SPACE_RES(mp,nl)      \
  78         (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  79 #define XFS_QM_DQALLOC_SPACE_RES(mp)    \
  80         (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \
  81          XFS_DQUOT_CLUSTER_SIZE_FSB)
  82 #define XFS_QM_QINOCREATE_SPACE_RES(mp) \
  83         XFS_IALLOC_SPACE_RES(mp)
  84 #define XFS_REMOVE_SPACE_RES(mp)        \
  85         XFS_DIRREMOVE_SPACE_RES(mp)
  86 #define XFS_RENAME_SPACE_RES(mp,nl)     \
  87         (XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  88 #define XFS_SYMLINK_SPACE_RES(mp,nl,b)  \
  89         (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b))
  90
  91 #endif  /* __XFS_TRANS_SPACE_H__ */