File: [Development] / xfs-linux-nodel / xfs_trans_space.h (download)
Revision 1.4, Wed Dec 2 07:06:04 1998 UTC (18 years, 10 months ago) by doucette
Branch: MAIN
Changes since 1.3: +15 -15
lines
Pass namelength instead of name string to space reservation calculations,
the strlen done there was a duplication of effort.
pv: 653733
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#ifndef _XFS_TRANS_SPACE_H
#define _XFS_TRANS_SPACE_H
#ident "$Revision$"
/*
* Components of space reservations.
*/
#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))
#define XFS_DAENTER_SPACE_RES(mp,w) \
((XFS_DA_NODE_MAXDEPTH + 1) * XFS_EXTENTADD_SPACE_RES(mp, w))
#define XFS_DAREMOVE_SPACE_RES(mp,w) \
(XFS_DA_NODE_MAXDEPTH * XFS_EXTENTADD_SPACE_RES(mp, w))
#define XFS_DIRENTER_MAX_SPLIT(mp,nl) \
((mp->m_sb.sb_blocksize == 512 && \
(nl) >= XFS_DIR_LEAF_CAN_DOUBLE_SPLIT_LEN) ? 2 : 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) \
(XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp)-1)
/*
* Space reservation values for various transactions.
*/
#define XFS_ADDAFORK_SPACE_RES(mp) \
(1)
#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 * XFS_AG_MAXLEVELS(mp))
#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))
#endif /* _XFS_TRANS_SPACE_H */