Return to xfs_trans_space.h CVS log

Up to [Development] / xfs-linux

Space reservation macros.

#ifndef _XFS_TRANS_SPACE_H
#define _XFS_TRANS_SPACE_H

#ident "$Revision$"

/*
 * Components of space reservations.
 */
#define	XFS_EXTENTADD_SPACE_RES(mp,w)	(XFS_BM_MAXLEVELS(mp,w) - 1)
#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,n)	\
	((mp->m_sb.sb_blocksize == 512 && \
	  strlen(n) >= XFS_DIR_LEAF_CAN_DOUBLE_SPLIT_LEN) ? 2 : 1)
#define	XFS_DIRENTER_SPACE_RES(mp,n)	\
	(XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \
	 XFS_DIRENTER_MAX_SPLIT(mp,n))
#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)
#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,n)	\
	(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,n))
#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_LINK_SPACE_RES(mp,n)	\
	XFS_DIRENTER_SPACE_RES(mp,n)
#define	XFS_MKDIR_SPACE_RES(mp,n)	\
	(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,n))
#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,n)	\
	(XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,n))
#define	XFS_SYMLINK_SPACE_RES(mp,n,b)	\
	(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,n) + (b))

#endif	/* _XFS_TRANS_SPACE_H */