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 bmaps that can be held in a block. */ 14 #define XFS_MAX_CONTIG_BMAPS_PER_BLOCK(mp) \ 15 (((mp)->m_bmap_dmxr[0]) - ((mp)->m_bmap_dmnr[0])) 16 17 /* Worst case number of realtime rmaps that can be held in a block. */ 18 #define XFS_MAX_CONTIG_RTRMAPS_PER_BLOCK(mp) \ 19 (((mp)->m_rtrmap_mxr[0]) - ((mp)->m_rtrmap_mnr[0])) 20 21 /* Adding one realtime rmap could split every level to the top of the tree. */ 22 #define XFS_RTRMAPADD_SPACE_RES(mp) ((mp)->m_rtrmap_maxlevels) 23 24 /* Blocks we might need to add "b" realtime rmaps to a tree. */ 25 #define XFS_NRTRMAPADD_SPACE_RES(mp, b) \ 26 ((((b) + XFS_MAX_CONTIG_RTRMAPS_PER_BLOCK(mp) - 1) / \ 27 XFS_MAX_CONTIG_RTRMAPS_PER_BLOCK(mp)) * \ 28 XFS_RTRMAPADD_SPACE_RES(mp)) 29 30 /* Worst case number of rmaps that can be held in a block. */ 31 #define XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) \ 32 (((mp)->m_rmap_mxr[0]) - ((mp)->m_rmap_mnr[0])) 33 34 /* Adding one rmap could split every level up to the top of the tree. */ 35 #define XFS_RMAPADD_SPACE_RES(mp) ((mp)->m_rmap_maxlevels) 36 37 /* 38 * Note that we historically set m_rmap_maxlevels to 9 when reflink is enabled, 39 * so we must preserve this behavior to avoid changing the transaction space 40 * reservations and minimum log size calculations for existing filesystems. 41 */ 42 #define XFS_OLD_REFLINK_RMAP_MAXLEVELS 9 43 44 /* Blocks we might need to add "b" rmaps to a tree. */ 45 #define XFS_NRMAPADD_SPACE_RES(mp, b)\ 46 (((b + XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) - 1) / \ 47 XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)) * \ 48 XFS_RMAPADD_SPACE_RES(mp)) 49 50 #define XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) \ 51 (((mp)->m_alloc_mxr[0]) - ((mp)->m_alloc_mnr[0])) 52 #define XFS_EXTENTADD_SPACE_RES(mp,w) (XFS_BM_MAXLEVELS(mp,w) - 1) 53 #define XFS_NEXTENTADD_SPACE_RES(mp,b,w)\ 54 (((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \ 55 XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \ 56 XFS_EXTENTADD_SPACE_RES(mp,w)) 57 58 /* Blocks we might need to add "b" mappings & rmappings to a file. */ 59 #define XFS_SWAP_RMAP_SPACE_RES(mp,b,w)\ 60 (XFS_NEXTENTADD_SPACE_RES((mp), (b), (w)) + \ 61 XFS_NRMAPADD_SPACE_RES((mp), (b))) 62 63 #define XFS_DAENTER_1B(mp,w) \ 64 ((w) == XFS_DATA_FORK ? (mp)->m_dir_geo->fsbcount : 1) 65 #define XFS_DAENTER_DBS(mp,w) \ 66 (XFS_DA_NODE_MAXDEPTH + (((w) == XFS_DATA_FORK) ? 2 : 0)) 67 #define XFS_DAENTER_BLOCKS(mp,w) \ 68 (XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w)) 69 #define XFS_DAENTER_BMAP1B(mp,w) \ 70 XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w) 71 #define XFS_DAENTER_BMAPS(mp,w) \ 72 (XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w)) 73 #define XFS_DAENTER_SPACE_RES(mp,w) \ 74 (XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w)) 75 #define XFS_DAREMOVE_SPACE_RES(mp,w) XFS_DAENTER_BMAPS(mp,w) 76 #define XFS_DIRENTER_MAX_SPLIT(mp,nl) 1 77 #define XFS_DIRENTER_SPACE_RES(mp,nl) \ 78 (XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \ 79 XFS_DIRENTER_MAX_SPLIT(mp,nl)) 80 #define XFS_DIRREMOVE_SPACE_RES(mp) \ 81 XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK) 82 #define XFS_IALLOC_SPACE_RES(mp) \ 83 (M_IGEO(mp)->ialloc_blks + \ 84 ((xfs_has_finobt(mp) ? 2 : 1) * M_IGEO(mp)->inobt_maxlevels)) 85 86 /* 87 * Space reservation values for various transactions. 88 */ 89 #define XFS_ADDAFORK_SPACE_RES(mp) \ 90 ((mp)->m_dir_geo->fsbcount + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK)) 91 #define XFS_ATTRRM_SPACE_RES(mp) \ 92 XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK) 93 /* This macro is not used - see inline code in xfs_attr_set */ 94 #define XFS_ATTRSET_SPACE_RES(mp, v) \ 95 (XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v)) 96 #define XFS_DIOSTRAT_SPACE_RES(mp, v) \ 97 (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v)) 98 #define XFS_GROWFS_SPACE_RES(mp) \ 99 (2 * (mp)->m_alloc_maxlevels) 100 #define XFS_GROWFSRT_SPACE_RES(mp,b) \ 101 ((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK)) 102 #define XFS_QM_DQALLOC_SPACE_RES(mp) \ 103 (XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \ 104 XFS_DQUOT_CLUSTER_SIZE_FSB) 105 #define XFS_QM_QINOCREATE_SPACE_RES(mp) \ 106 XFS_IALLOC_SPACE_RES(mp) 107 #define XFS_IFREE_SPACE_RES(mp) \ 108 (xfs_has_finobt(mp) ? M_IGEO(mp)->inobt_maxlevels : 0) 109 110 unsigned int xfs_parent_calc_space_res(struct xfs_mount *mp, 111 unsigned int namelen); 112 113 unsigned int xfs_create_space_res(struct xfs_mount *mp, unsigned int namelen); 114 unsigned int xfs_mkdir_space_res(struct xfs_mount *mp, unsigned int namelen); 115 unsigned int xfs_link_space_res(struct xfs_mount *mp, unsigned int namelen); 116 unsigned int xfs_symlink_space_res(struct xfs_mount *mp, unsigned int namelen, 117 unsigned int fsblocks); 118 unsigned int xfs_remove_space_res(struct xfs_mount *mp, unsigned int namelen); 119 120 unsigned int xfs_rename_space_res(struct xfs_mount *mp, 121 unsigned int src_namelen, bool target_exists, 122 unsigned int target_namelen, bool has_whiteout); 123 124 #endif /* __XFS_TRANS_SPACE_H__ */ 125