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1// SPDX-License-Identifier: GPL-2.02/*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 space27 * reservations and minimum log size calculations for existing filesystems.28 */29#define XFS_OLD_REFLINK_RMAP_MAXLEVELS 930 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) 164#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 97unsigned int xfs_parent_calc_space_res(struct xfs_mount *mp,98 unsigned int namelen);99 100unsigned int xfs_create_space_res(struct xfs_mount *mp, unsigned int namelen);101unsigned int xfs_mkdir_space_res(struct xfs_mount *mp, unsigned int namelen);102unsigned int xfs_link_space_res(struct xfs_mount *mp, unsigned int namelen);103unsigned int xfs_symlink_space_res(struct xfs_mount *mp, unsigned int namelen,104 unsigned int fsblocks);105unsigned int xfs_remove_space_res(struct xfs_mount *mp, unsigned int namelen);106 107unsigned 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