Release 4.18 fs/xfs/libxfs/xfs_trans_space.h

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 */
#ifndef __XFS_TRANS_SPACE_H__

#define __XFS_TRANS_SPACE_H__

/*
 * Components of space reservations.
 */

/* Worst case number of rmaps that can be held in a block. */

#define XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)    \
		(((mp)->m_rmap_mxr[0]) - ((mp)->m_rmap_mnr[0]))

/* Adding one rmap could split every level up to the top of the tree. */

#define XFS_RMAPADD_SPACE_RES(mp) ((mp)->m_rmap_maxlevels)

/* Blocks we might need to add "b" rmaps to a tree. */

#define XFS_NRMAPADD_SPACE_RES(mp, b)\
	(((b + XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) - 1) / \
          XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)) * \
          XFS_RMAPADD_SPACE_RES(mp))


#define XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)    \
		(((mp)->m_alloc_mxr[0]) - ((mp)->m_alloc_mnr[0]))

#define	XFS_EXTENTADD_SPACE_RES(mp,w)	(XFS_BM_MAXLEVELS(mp,w) - 1)

#define XFS_NEXTENTADD_SPACE_RES(mp,b,w)\
	(((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \
          XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \
          XFS_EXTENTADD_SPACE_RES(mp,w))

/* Blocks we might need to add "b" mappings & rmappings to a file. */

#define XFS_SWAP_RMAP_SPACE_RES(mp,b,w)\
	(XFS_NEXTENTADD_SPACE_RES((mp), (b), (w)) + \
         XFS_NRMAPADD_SPACE_RES((mp), (b)))


#define	XFS_DAENTER_1B(mp,w)	\
	((w) == XFS_DATA_FORK ? (mp)->m_dir_geo->fsbcount : 1)

#define	XFS_DAENTER_DBS(mp,w)	\
	(XFS_DA_NODE_MAXDEPTH + (((w) == XFS_DATA_FORK) ? 2 : 0))

#define	XFS_DAENTER_BLOCKS(mp,w)	\
	(XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w))

#define	XFS_DAENTER_BMAP1B(mp,w)	\
	XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w)

#define	XFS_DAENTER_BMAPS(mp,w)		\
	(XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w))

#define	XFS_DAENTER_SPACE_RES(mp,w)	\
	(XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w))

#define	XFS_DAREMOVE_SPACE_RES(mp,w)	XFS_DAENTER_BMAPS(mp,w)

#define	XFS_DIRENTER_MAX_SPLIT(mp,nl)	1

#define	XFS_DIRENTER_SPACE_RES(mp,nl)	\
	(XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \
         XFS_DIRENTER_MAX_SPLIT(mp,nl))

#define	XFS_DIRREMOVE_SPACE_RES(mp)	\
	XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK)

#define	XFS_IALLOC_SPACE_RES(mp)	\
	((mp)->m_ialloc_blks + \
         (xfs_sb_version_hasfinobt(&mp->m_sb) ? 2 : 1 * \
          ((mp)->m_in_maxlevels - 1)))

/*
 * Space reservation values for various transactions.
 */

#define	XFS_ADDAFORK_SPACE_RES(mp)	\
	((mp)->m_dir_geo->fsbcount + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK))

#define	XFS_ATTRRM_SPACE_RES(mp)	\
	XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK)
/* This macro is not used - see inline code in xfs_attr_set */

#define	XFS_ATTRSET_SPACE_RES(mp, v)	\
	(XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v))

#define	XFS_CREATE_SPACE_RES(mp,nl)	\
	(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))

#define	XFS_DIOSTRAT_SPACE_RES(mp, v)	\
	(XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v))

#define	XFS_GROWFS_SPACE_RES(mp)	\
	(2 * (mp)->m_ag_maxlevels)

#define	XFS_GROWFSRT_SPACE_RES(mp,b)	\
	((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK))

#define	XFS_LINK_SPACE_RES(mp,nl)	\
	XFS_DIRENTER_SPACE_RES(mp,nl)

#define	XFS_MKDIR_SPACE_RES(mp,nl)	\
	(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))

#define	XFS_QM_DQALLOC_SPACE_RES(mp)	\
	(XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \
         XFS_DQUOT_CLUSTER_SIZE_FSB)

#define	XFS_QM_QINOCREATE_SPACE_RES(mp)	\
	XFS_IALLOC_SPACE_RES(mp)

#define	XFS_REMOVE_SPACE_RES(mp)	\
	XFS_DIRREMOVE_SPACE_RES(mp)

#define	XFS_RENAME_SPACE_RES(mp,nl)	\
	(XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))

#define	XFS_SYMLINK_SPACE_RES(mp,nl,b)	\
	(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b))

#define XFS_IFREE_SPACE_RES(mp)		\
	(xfs_sb_version_hasfinobt(&mp->m_sb) ? (mp)->m_in_maxlevels : 0)


#endif	/* __XFS_TRANS_SPACE_H__ */
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Directory: fs/xfs/libxfs

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