fs/xfs/xfs_trans_space.h

   1 /*
   2  * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32 #ifndef __XFS_TRANS_SPACE_H__
  33 #define __XFS_TRANS_SPACE_H__
  34
  35 /*
  36  * Components of space reservations.
  37  */
  38 #define XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)    \
  39                 (((mp)->m_alloc_mxr[0]) - ((mp)->m_alloc_mnr[0]))
  40 #define XFS_EXTENTADD_SPACE_RES(mp,w)   (XFS_BM_MAXLEVELS(mp,w) - 1)
  41 #define XFS_NEXTENTADD_SPACE_RES(mp,b,w)\
  42         (((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \
  43           XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \
  44           XFS_EXTENTADD_SPACE_RES(mp,w))
  45 #define XFS_DAENTER_1B(mp,w)    ((w) == XFS_DATA_FORK ? (mp)->m_dirblkfsbs : 1)
  46 #define XFS_DAENTER_DBS(mp,w)   \
  47         (XFS_DA_NODE_MAXDEPTH + \
  48          ((XFS_DIR_IS_V2(mp) && (w) == XFS_DATA_FORK) ? 2 : 0))
  49 #define XFS_DAENTER_BLOCKS(mp,w)        \
  50         (XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w))
  51 #define XFS_DAENTER_BMAP1B(mp,w)        \
  52         XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w)
  53 #define XFS_DAENTER_BMAPS(mp,w)         \
  54         (XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w))
  55 #define XFS_DAENTER_SPACE_RES(mp,w)     \
  56         (XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w))
  57 #define XFS_DAREMOVE_SPACE_RES(mp,w)    XFS_DAENTER_BMAPS(mp,w)
  58 #define XFS_DIRENTER_MAX_SPLIT(mp,nl)   \
  59         (((mp)->m_sb.sb_blocksize == 512 && \
  60           XFS_DIR_IS_V1(mp) && \
  61           (nl) >= XFS_DIR_LEAF_CAN_DOUBLE_SPLIT_LEN) ? 2 : 1)
  62 #define XFS_DIRENTER_SPACE_RES(mp,nl)   \
  63         (XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \
  64          XFS_DIRENTER_MAX_SPLIT(mp,nl))
  65 #define XFS_DIRREMOVE_SPACE_RES(mp)     \
  66         XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK)
  67 #define XFS_IALLOC_SPACE_RES(mp)        \
  68         (XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp)-1)
  69
  70 /*
  71  * Space reservation values for various transactions.
  72  */
  73 #define XFS_ADDAFORK_SPACE_RES(mp)      \
  74         ((mp)->m_dirblkfsbs + \
  75          (XFS_DIR_IS_V1(mp) ? 0 : XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK)))
  76 #define XFS_ATTRRM_SPACE_RES(mp)        \
  77         XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK)
  78 /* This macro is not used - see inline code in xfs_attr_set */
  79 #define XFS_ATTRSET_SPACE_RES(mp, v)    \
  80         (XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v))
  81 #define XFS_CREATE_SPACE_RES(mp,nl)     \
  82         (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  83 #define XFS_DIOSTRAT_SPACE_RES(mp, v)   \
  84         (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v))
  85 #define XFS_GROWFS_SPACE_RES(mp)        \
  86         (2 * XFS_AG_MAXLEVELS(mp))
  87 #define XFS_GROWFSRT_SPACE_RES(mp,b)    \
  88         ((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK))
  89 #define XFS_LINK_SPACE_RES(mp,nl)       \
  90         XFS_DIRENTER_SPACE_RES(mp,nl)
  91 #define XFS_MKDIR_SPACE_RES(mp,nl)      \
  92         (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  93 #define XFS_QM_DQALLOC_SPACE_RES(mp)    \
  94         (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \
  95          XFS_DQUOT_CLUSTER_SIZE_FSB)
  96 #define XFS_QM_QINOCREATE_SPACE_RES(mp) \
  97         XFS_IALLOC_SPACE_RES(mp)
  98 #define XFS_REMOVE_SPACE_RES(mp)        \
  99         XFS_DIRREMOVE_SPACE_RES(mp)
 100 #define XFS_RENAME_SPACE_RES(mp,nl)     \
 101         (XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
 102 #define XFS_SYMLINK_SPACE_RES(mp,nl,b)  \
 103         (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b))
 104
 105 #endif  /* __XFS_TRANS_SPACE_H__ */