xfs/libxfs/xfs_trans_space.h

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Copyright (c) 2000,2005 Silicon Graphics, Inc.
0004  * All Rights Reserved.
0005  */
0006 #ifndef __XFS_TRANS_SPACE_H__
0007 #define __XFS_TRANS_SPACE_H__
0008
0009 /*
0010  * Components of space reservations.
0011  */
0012
0013 /* Worst case number of rmaps that can be held in a block. */
0014 #define XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)    \
0015         (((mp)->m_rmap_mxr[0]) - ((mp)->m_rmap_mnr[0]))
0016
0017 /* Adding one rmap could split every level up to the top of the tree. */
0018 #define XFS_RMAPADD_SPACE_RES(mp) ((mp)->m_rmap_maxlevels)
0019
0020 /*
0021  * Note that we historically set m_rmap_maxlevels to 9 when reflink is enabled,
0022  * so we must preserve this behavior to avoid changing the transaction space
0023  * reservations and minimum log size calculations for existing filesystems.
0024  */
0025 #define XFS_OLD_REFLINK_RMAP_MAXLEVELS      9
0026
0027 /* Blocks we might need to add "b" rmaps to a tree. */
0028 #define XFS_NRMAPADD_SPACE_RES(mp, b)\
0029     (((b + XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) - 1) / \
0030       XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)) * \
0031       XFS_RMAPADD_SPACE_RES(mp))
0032
0033 #define XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)    \
0034         (((mp)->m_alloc_mxr[0]) - ((mp)->m_alloc_mnr[0]))
0035 #define XFS_EXTENTADD_SPACE_RES(mp,w)   (XFS_BM_MAXLEVELS(mp,w) - 1)
0036 #define XFS_NEXTENTADD_SPACE_RES(mp,b,w)\
0037     (((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \
0038       XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \
0039       XFS_EXTENTADD_SPACE_RES(mp,w))
0040
0041 /* Blocks we might need to add "b" mappings & rmappings to a file. */
0042 #define XFS_SWAP_RMAP_SPACE_RES(mp,b,w)\
0043     (XFS_NEXTENTADD_SPACE_RES((mp), (b), (w)) + \
0044      XFS_NRMAPADD_SPACE_RES((mp), (b)))
0045
0046 #define XFS_DAENTER_1B(mp,w)    \
0047     ((w) == XFS_DATA_FORK ? (mp)->m_dir_geo->fsbcount : 1)
0048 #define XFS_DAENTER_DBS(mp,w)   \
0049     (XFS_DA_NODE_MAXDEPTH + (((w) == XFS_DATA_FORK) ? 2 : 0))
0050 #define XFS_DAENTER_BLOCKS(mp,w)    \
0051     (XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w))
0052 #define XFS_DAENTER_BMAP1B(mp,w)    \
0053     XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w)
0054 #define XFS_DAENTER_BMAPS(mp,w)     \
0055     (XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w))
0056 #define XFS_DAENTER_SPACE_RES(mp,w) \
0057     (XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w))
0058 #define XFS_DAREMOVE_SPACE_RES(mp,w)    XFS_DAENTER_BMAPS(mp,w)
0059 #define XFS_DIRENTER_MAX_SPLIT(mp,nl)   1
0060 #define XFS_DIRENTER_SPACE_RES(mp,nl)   \
0061     (XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \
0062      XFS_DIRENTER_MAX_SPLIT(mp,nl))
0063 #define XFS_DIRREMOVE_SPACE_RES(mp) \
0064     XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK)
0065 #define XFS_IALLOC_SPACE_RES(mp)    \
0066     (M_IGEO(mp)->ialloc_blks + \
0067      ((xfs_has_finobt(mp) ? 2 : 1) * M_IGEO(mp)->inobt_maxlevels))
0068
0069 /*
0070  * Space reservation values for various transactions.
0071  */
0072 #define XFS_ADDAFORK_SPACE_RES(mp)  \
0073     ((mp)->m_dir_geo->fsbcount + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK))
0074 #define XFS_ATTRRM_SPACE_RES(mp)    \
0075     XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK)
0076 /* This macro is not used - see inline code in xfs_attr_set */
0077 #define XFS_ATTRSET_SPACE_RES(mp, v)    \
0078     (XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v))
0079 #define XFS_CREATE_SPACE_RES(mp,nl) \
0080     (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
0081 #define XFS_DIOSTRAT_SPACE_RES(mp, v)   \
0082     (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v))
0083 #define XFS_GROWFS_SPACE_RES(mp)    \
0084     (2 * (mp)->m_alloc_maxlevels)
0085 #define XFS_GROWFSRT_SPACE_RES(mp,b)    \
0086     ((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK))
0087 #define XFS_LINK_SPACE_RES(mp,nl)   \
0088     XFS_DIRENTER_SPACE_RES(mp,nl)
0089 #define XFS_MKDIR_SPACE_RES(mp,nl)  \
0090     (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
0091 #define XFS_QM_DQALLOC_SPACE_RES(mp)    \
0092     (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \
0093      XFS_DQUOT_CLUSTER_SIZE_FSB)
0094 #define XFS_QM_QINOCREATE_SPACE_RES(mp) \
0095     XFS_IALLOC_SPACE_RES(mp)
0096 #define XFS_REMOVE_SPACE_RES(mp)    \
0097     XFS_DIRREMOVE_SPACE_RES(mp)
0098 #define XFS_RENAME_SPACE_RES(mp,nl) \
0099     (XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
0100 #define XFS_SYMLINK_SPACE_RES(mp,nl,b)  \
0101     (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b))
0102 #define XFS_IFREE_SPACE_RES(mp)     \
0103     (xfs_has_finobt(mp) ? M_IGEO(mp)->inobt_maxlevels : 0)
0104
0105
0106 #endif  /* __XFS_TRANS_SPACE_H__ */