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 /* 21 * Note that we historically set m_rmap_maxlevels to 9 when reflink is enabled, 22 * so we must preserve this behavior to avoid changing the transaction space 23 * reservations and minimum log size calculations for existing filesystems. 24 */ 25 #define XFS_OLD_REFLINK_RMAP_MAXLEVELS 9 26 27 /* Blocks we might need to add "b" rmaps to a tree. */ 28 #define XFS_NRMAPADD_SPACE_RES(mp, b)\ 29 (((b + XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) - 1) / \ 30 XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)) * \ 31 XFS_RMAPADD_SPACE_RES(mp)) 32 33 #define XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) \ 34 (((mp)->m_alloc_mxr[0]) - ((mp)->m_alloc_mnr[0])) 35 #define XFS_EXTENTADD_SPACE_RES(mp,w) (XFS_BM_MAXLEVELS(mp,w) - 1) 36 #define XFS_NEXTENTADD_SPACE_RES(mp,b,w)\ 37 (((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \ 38 XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \ 39 XFS_EXTENTADD_SPACE_RES(mp,w)) 40 41 /* Blocks we might need to add "b" mappings & rmappings to a file. */ 42 #define XFS_SWAP_RMAP_SPACE_RES(mp,b,w)\ 43 (XFS_NEXTENTADD_SPACE_RES((mp), (b), (w)) + \ 44 XFS_NRMAPADD_SPACE_RES((mp), (b))) 45 46 #define XFS_DAENTER_1B(mp,w) \ 47 ((w) == XFS_DATA_FORK ? (mp)->m_dir_geo->fsbcount : 1) 48 #define XFS_DAENTER_DBS(mp,w) \ 49 (XFS_DA_NODE_MAXDEPTH + (((w) == XFS_DATA_FORK) ? 2 : 0)) 50 #define XFS_DAENTER_BLOCKS(mp,w) \ 51 (XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w)) 52 #define XFS_DAENTER_BMAP1B(mp,w) \ 53 XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w) 54 #define XFS_DAENTER_BMAPS(mp,w) \ 55 (XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w)) 56 #define XFS_DAENTER_SPACE_RES(mp,w) \ 57 (XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w)) 58 #define XFS_DAREMOVE_SPACE_RES(mp,w) XFS_DAENTER_BMAPS(mp,w) 59 #define XFS_DIRENTER_MAX_SPLIT(mp,nl) 1 60 #define XFS_DIRENTER_SPACE_RES(mp,nl) \ 61 (XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \ 62 XFS_DIRENTER_MAX_SPLIT(mp,nl)) 63 #define XFS_DIRREMOVE_SPACE_RES(mp) \ 64 XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK) 65 #define XFS_IALLOC_SPACE_RES(mp) \ 66 (M_IGEO(mp)->ialloc_blks + \ 67 ((xfs_has_finobt(mp) ? 2 : 1) * M_IGEO(mp)->inobt_maxlevels)) 68 69 /* 70 * Space reservation values for various transactions. 71 */ 72 #define XFS_ADDAFORK_SPACE_RES(mp) \ 73 ((mp)->m_dir_geo->fsbcount + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK)) 74 #define XFS_ATTRRM_SPACE_RES(mp) \ 75 XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK) 76 /* This macro is not used - see inline code in xfs_attr_set */ 77 #define XFS_ATTRSET_SPACE_RES(mp, v) \ 78 (XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v)) 79 #define XFS_CREATE_SPACE_RES(mp,nl) \ 80 (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl)) 81 #define XFS_DIOSTRAT_SPACE_RES(mp, v) \ 82 (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v)) 83 #define XFS_GROWFS_SPACE_RES(mp) \ 84 (2 * (mp)->m_alloc_maxlevels) 85 #define XFS_GROWFSRT_SPACE_RES(mp,b) \ 86 ((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK)) 87 #define XFS_LINK_SPACE_RES(mp,nl) \ 88 XFS_DIRENTER_SPACE_RES(mp,nl) 89 #define XFS_MKDIR_SPACE_RES(mp,nl) \ 90 (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl)) 91 #define XFS_QM_DQALLOC_SPACE_RES(mp) \ 92 (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \ 93 XFS_DQUOT_CLUSTER_SIZE_FSB) 94 #define XFS_QM_QINOCREATE_SPACE_RES(mp) \ 95 XFS_IALLOC_SPACE_RES(mp) 96 #define XFS_REMOVE_SPACE_RES(mp) \ 97 XFS_DIRREMOVE_SPACE_RES(mp) 98 #define XFS_RENAME_SPACE_RES(mp,nl) \ 99 (XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl)) 100 #define XFS_SYMLINK_SPACE_RES(mp,nl,b) \ 101 (XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b)) 102 #define XFS_IFREE_SPACE_RES(mp) \ 103 (xfs_has_finobt(mp) ? M_IGEO(mp)->inobt_maxlevels : 0) 104 105 106 #endif /* __XFS_TRANS_SPACE_H__ */ 107