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