xfs_trans_space.h

  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
110unsigned int xfs_parent_calc_space_res(struct xfs_mount *mp,
111		unsigned int namelen);
112
113unsigned int xfs_create_space_res(struct xfs_mount *mp, unsigned int namelen);
114unsigned int xfs_mkdir_space_res(struct xfs_mount *mp, unsigned int namelen);
115unsigned int xfs_link_space_res(struct xfs_mount *mp, unsigned int namelen);
116unsigned int xfs_symlink_space_res(struct xfs_mount *mp, unsigned int namelen,
117		unsigned int fsblocks);
118unsigned int xfs_remove_space_res(struct xfs_mount *mp, unsigned int namelen);
119
120unsigned 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__ */