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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (c) 2000,2005 Silicon Graphics, Inc.
- * All Rights Reserved.
- */
- #ifndef __XFS_TRANS_SPACE_H__
- #define __XFS_TRANS_SPACE_H__
- /*
- * Components of space reservations.
- */
- /* Worst case number of rmaps that can be held in a block. */
- #define XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) \
- (((mp)->m_rmap_mxr[0]) - ((mp)->m_rmap_mnr[0]))
- /* Adding one rmap could split every level up to the top of the tree. */
- #define XFS_RMAPADD_SPACE_RES(mp) ((mp)->m_rmap_maxlevels)
- /*
- * Note that we historically set m_rmap_maxlevels to 9 when reflink is enabled,
- * so we must preserve this behavior to avoid changing the transaction space
- * reservations and minimum log size calculations for existing filesystems.
- */
- #define XFS_OLD_REFLINK_RMAP_MAXLEVELS 9
- /* Blocks we might need to add "b" rmaps to a tree. */
- #define XFS_NRMAPADD_SPACE_RES(mp, b)\
- (((b + XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) - 1) / \
- XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)) * \
- XFS_RMAPADD_SPACE_RES(mp))
- #define XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) \
- (((mp)->m_alloc_mxr[0]) - ((mp)->m_alloc_mnr[0]))
- #define XFS_EXTENTADD_SPACE_RES(mp,w) (XFS_BM_MAXLEVELS(mp,w) - 1)
- #define XFS_NEXTENTADD_SPACE_RES(mp,b,w)\
- (((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \
- XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \
- XFS_EXTENTADD_SPACE_RES(mp,w))
- /* Blocks we might need to add "b" mappings & rmappings to a file. */
- #define XFS_SWAP_RMAP_SPACE_RES(mp,b,w)\
- (XFS_NEXTENTADD_SPACE_RES((mp), (b), (w)) + \
- XFS_NRMAPADD_SPACE_RES((mp), (b)))
- #define XFS_DAENTER_1B(mp,w) \
- ((w) == XFS_DATA_FORK ? (mp)->m_dir_geo->fsbcount : 1)
- #define XFS_DAENTER_DBS(mp,w) \
- (XFS_DA_NODE_MAXDEPTH + (((w) == XFS_DATA_FORK) ? 2 : 0))
- #define XFS_DAENTER_BLOCKS(mp,w) \
- (XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w))
- #define XFS_DAENTER_BMAP1B(mp,w) \
- XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w)
- #define XFS_DAENTER_BMAPS(mp,w) \
- (XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w))
- #define XFS_DAENTER_SPACE_RES(mp,w) \
- (XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w))
- #define XFS_DAREMOVE_SPACE_RES(mp,w) XFS_DAENTER_BMAPS(mp,w)
- #define XFS_DIRENTER_MAX_SPLIT(mp,nl) 1
- #define XFS_DIRENTER_SPACE_RES(mp,nl) \
- (XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \
- XFS_DIRENTER_MAX_SPLIT(mp,nl))
- #define XFS_DIRREMOVE_SPACE_RES(mp) \
- XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK)
- #define XFS_IALLOC_SPACE_RES(mp) \
- (M_IGEO(mp)->ialloc_blks + \
- ((xfs_has_finobt(mp) ? 2 : 1) * M_IGEO(mp)->inobt_maxlevels))
- /*
- * Space reservation values for various transactions.
- */
- #define XFS_ADDAFORK_SPACE_RES(mp) \
- ((mp)->m_dir_geo->fsbcount + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK))
- #define XFS_ATTRRM_SPACE_RES(mp) \
- XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK)
- /* This macro is not used - see inline code in xfs_attr_set */
- #define XFS_ATTRSET_SPACE_RES(mp, v) \
- (XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v))
- #define XFS_CREATE_SPACE_RES(mp,nl) \
- (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
- #define XFS_DIOSTRAT_SPACE_RES(mp, v) \
- (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v))
- #define XFS_GROWFS_SPACE_RES(mp) \
- (2 * (mp)->m_alloc_maxlevels)
- #define XFS_GROWFSRT_SPACE_RES(mp,b) \
- ((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK))
- #define XFS_LINK_SPACE_RES(mp,nl) \
- XFS_DIRENTER_SPACE_RES(mp,nl)
- #define XFS_MKDIR_SPACE_RES(mp,nl) \
- (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
- #define XFS_QM_DQALLOC_SPACE_RES(mp) \
- (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \
- XFS_DQUOT_CLUSTER_SIZE_FSB)
- #define XFS_QM_QINOCREATE_SPACE_RES(mp) \
- XFS_IALLOC_SPACE_RES(mp)
- #define XFS_REMOVE_SPACE_RES(mp) \
- XFS_DIRREMOVE_SPACE_RES(mp)
- #define XFS_RENAME_SPACE_RES(mp,nl) \
- (XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
- #define XFS_SYMLINK_SPACE_RES(mp,nl,b) \
- (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b))
- #define XFS_IFREE_SPACE_RES(mp) \
- (xfs_has_finobt(mp) ? M_IGEO(mp)->inobt_maxlevels : 0)
- #endif /* __XFS_TRANS_SPACE_H__ */
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