Brooklyn/fs/xfs/libxfs/xfs_trans_space.h
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2022-03-15 21:13:23 +05:00

100 lines
3.7 KiB
C

// 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) \
(M_IGEO(mp)->ialloc_blks + \
((xfs_has_finobt(mp) ? 2 : 1) * M_IGEO(mp)->inobt_maxlevels))
/*
* 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_has_finobt(mp) ? M_IGEO(mp)->inobt_maxlevels : 0)
#endif /* __XFS_TRANS_SPACE_H__ */