LXR linux/fs/xfs/libxfs/xfs_trans

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
   4 * All Rights Reserved.
   5 */
   6#ifndef __XFS_TRANS_SPACE_H__
   7#define __XFS_TRANS_SPACE_H__
   8
   9/*
  10 * Components of space reservations.
  11 */
  12
  13/* Worst case number of rmaps that can be held in a block. */
  14#define XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)    \
  15                (((mp)->m_rmap_mxr[0]) - ((mp)->m_rmap_mnr[0]))
  16
  17/* Adding one rmap could split every level up to the top of the tree. */
  18#define XFS_RMAPADD_SPACE_RES(mp) ((mp)->m_rmap_maxlevels)
  19
  20/* Blocks we might need to add "b" rmaps to a tree. */
  21#define XFS_NRMAPADD_SPACE_RES(mp, b)\
  22        (((b + XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) - 1) / \
  23          XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)) * \
  24          XFS_RMAPADD_SPACE_RES(mp))
  25
  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
  34/* Blocks we might need to add "b" mappings & rmappings to a file. */
  35#define XFS_SWAP_RMAP_SPACE_RES(mp,b,w)\
  36        (XFS_NEXTENTADD_SPACE_RES((mp), (b), (w)) + \
  37         XFS_NRMAPADD_SPACE_RES((mp), (b)))
  38
  39#define XFS_DAENTER_1B(mp,w)    \
  40        ((w) == XFS_DATA_FORK ? (mp)->m_dir_geo->fsbcount : 1)
  41#define XFS_DAENTER_DBS(mp,w)   \
  42        (XFS_DA_NODE_MAXDEPTH + (((w) == XFS_DATA_FORK) ? 2 : 0))
  43#define XFS_DAENTER_BLOCKS(mp,w)        \
  44        (XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w))
  45#define XFS_DAENTER_BMAP1B(mp,w)        \
  46        XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w)
  47#define XFS_DAENTER_BMAPS(mp,w)         \
  48        (XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w))
  49#define XFS_DAENTER_SPACE_RES(mp,w)     \
  50        (XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w))
  51#define XFS_DAREMOVE_SPACE_RES(mp,w)    XFS_DAENTER_BMAPS(mp,w)
  52#define XFS_DIRENTER_MAX_SPLIT(mp,nl)   1
  53#define XFS_DIRENTER_SPACE_RES(mp,nl)   \
  54        (XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \
  55         XFS_DIRENTER_MAX_SPLIT(mp,nl))
  56#define XFS_DIRREMOVE_SPACE_RES(mp)     \
  57        XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK)
  58#define XFS_IALLOC_SPACE_RES(mp)        \
  59        (M_IGEO(mp)->ialloc_blks + \
  60         ((xfs_sb_version_hasfinobt(&mp->m_sb) ? 2 : 1) * \
  61          M_IGEO(mp)->inobt_maxlevels))
  62
  63/*
  64 * Space reservation values for various transactions.
  65 */
  66#define XFS_ADDAFORK_SPACE_RES(mp)      \
  67        ((mp)->m_dir_geo->fsbcount + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK))
  68#define XFS_ATTRRM_SPACE_RES(mp)        \
  69        XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK)
  70/* This macro is not used - see inline code in xfs_attr_set */
  71#define XFS_ATTRSET_SPACE_RES(mp, v)    \
  72        (XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v))
  73#define XFS_CREATE_SPACE_RES(mp,nl)     \
  74        (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  75#define XFS_DIOSTRAT_SPACE_RES(mp, v)   \
  76        (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v))
  77#define XFS_GROWFS_SPACE_RES(mp)        \
  78        (2 * (mp)->m_ag_maxlevels)
  79#define XFS_GROWFSRT_SPACE_RES(mp,b)    \
  80        ((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK))
  81#define XFS_LINK_SPACE_RES(mp,nl)       \
  82        XFS_DIRENTER_SPACE_RES(mp,nl)
  83#define XFS_MKDIR_SPACE_RES(mp,nl)      \
  84        (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  85#define XFS_QM_DQALLOC_SPACE_RES(mp)    \
  86        (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \
  87         XFS_DQUOT_CLUSTER_SIZE_FSB)
  88#define XFS_QM_QINOCREATE_SPACE_RES(mp) \
  89        XFS_IALLOC_SPACE_RES(mp)
  90#define XFS_REMOVE_SPACE_RES(mp)        \
  91        XFS_DIRREMOVE_SPACE_RES(mp)
  92#define XFS_RENAME_SPACE_RES(mp,nl)     \
  93        (XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
  94#define XFS_SYMLINK_SPACE_RES(mp,nl,b)  \
  95        (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b))
  96#define XFS_IFREE_SPACE_RES(mp)         \
  97        (xfs_sb_version_hasfinobt(&mp->m_sb) ? \
  98                        M_IGEO(mp)->inobt_maxlevels : 0)
  99
 100
 101#endif  /* __XFS_TRANS_SPACE_H__ */
 102