[deliverable/linux.git] / fs / xfs / libxfs / xfs_trans_resv.h

/*
 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef	__XFS_TRANS_RESV_H__
#define	__XFS_TRANS_RESV_H__

struct xfs_mount;

/*
 * structure for maintaining pre-calculated transaction reservations.
 */
struct xfs_trans_res {
	uint	tr_logres;	/* log space unit in bytes per log ticket */
	int	tr_logcount;	/* number of log operations per log ticket */
	int	tr_logflags;	/* log flags, currently only used for indicating
				 * a reservation request is permanent or not */
};

struct xfs_trans_resv {
	struct xfs_trans_res	tr_write;	/* extent alloc trans */
	struct xfs_trans_res	tr_itruncate;	/* truncate trans */
	struct xfs_trans_res	tr_rename;	/* rename trans */
	struct xfs_trans_res	tr_link;	/* link trans */
	struct xfs_trans_res	tr_remove;	/* unlink trans */
	struct xfs_trans_res	tr_symlink;	/* symlink trans */
	struct xfs_trans_res	tr_create;	/* create trans */
	struct xfs_trans_res	tr_create_tmpfile; /* create O_TMPFILE trans */
	struct xfs_trans_res	tr_mkdir;	/* mkdir trans */
	struct xfs_trans_res	tr_ifree;	/* inode free trans */
	struct xfs_trans_res	tr_ichange;	/* inode update trans */
	struct xfs_trans_res	tr_growdata;	/* fs data section grow trans */
	struct xfs_trans_res	tr_addafork;	/* add inode attr fork trans */
	struct xfs_trans_res	tr_writeid;	/* write setuid/setgid file */
	struct xfs_trans_res	tr_attrinval;	/* attr fork buffer
						 * invalidation */
	struct xfs_trans_res	tr_attrsetm;	/* set/create an attribute at
						 * mount time */
	struct xfs_trans_res	tr_attrsetrt;	/* set/create an attribute at
						 * runtime */
	struct xfs_trans_res	tr_attrrm;	/* remove an attribute */
	struct xfs_trans_res	tr_clearagi;	/* clear agi unlinked bucket */
	struct xfs_trans_res	tr_growrtalloc;	/* grow realtime allocations */
	struct xfs_trans_res	tr_growrtzero;	/* grow realtime zeroing */
	struct xfs_trans_res	tr_growrtfree;	/* grow realtime freeing */
	struct xfs_trans_res	tr_qm_setqlim;	/* adjust quota limits */
	struct xfs_trans_res	tr_qm_dqalloc;	/* allocate quota on disk */
	struct xfs_trans_res	tr_qm_quotaoff;	/* turn quota off */
	struct xfs_trans_res	tr_qm_equotaoff;/* end of turn quota off */
	struct xfs_trans_res	tr_sb;		/* modify superblock */
	struct xfs_trans_res	tr_fsyncts;	/* update timestamps on fsync */
};

/* shorthand way of accessing reservation structure */
#define M_RES(mp)	(&(mp)->m_resv)

/*
 * Per-extent log reservation for the allocation btree changes
 * involved in freeing or allocating an extent.
 * 2 trees * (2 blocks/level * max depth - 1) * block size
 */
#define	XFS_ALLOCFREE_LOG_RES(mp,nx) \
	((nx) * (2 * XFS_FSB_TO_B((mp), 2 * (mp)->m_ag_maxlevels - 1)))
#define	XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
	((nx) * (2 * (2 * (mp)->m_ag_maxlevels - 1)))

/*
 * Per-directory log reservation for any directory change.
 * dir blocks: (1 btree block per level + data block + free block) * dblock size
 * bmap btree: (levels + 2) * max depth * block size
 * v2 directory blocks can be fragmented below the dirblksize down to the fsb
 * size, so account for that in the DAENTER macros.
 */
#define	XFS_DIROP_LOG_RES(mp)	\
	(XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
	 (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
#define	XFS_DIROP_LOG_COUNT(mp)	\
	(XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
	 XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)

/*
 * Various log count values.
 */
#define	XFS_DEFAULT_LOG_COUNT		1
#define	XFS_DEFAULT_PERM_LOG_COUNT	2
#define	XFS_ITRUNCATE_LOG_COUNT		2
#define XFS_INACTIVE_LOG_COUNT		2
#define	XFS_CREATE_LOG_COUNT		2
#define	XFS_CREATE_TMPFILE_LOG_COUNT	2
#define	XFS_MKDIR_LOG_COUNT		3
#define	XFS_SYMLINK_LOG_COUNT		3
#define	XFS_REMOVE_LOG_COUNT		2
#define	XFS_LINK_LOG_COUNT		2
#define	XFS_RENAME_LOG_COUNT		2
#define	XFS_WRITE_LOG_COUNT		2
#define	XFS_ADDAFORK_LOG_COUNT		2
#define	XFS_ATTRINVAL_LOG_COUNT		1
#define	XFS_ATTRSET_LOG_COUNT		3
#define	XFS_ATTRRM_LOG_COUNT		3

void xfs_trans_resv_calc(struct xfs_mount *mp, struct xfs_trans_resv *resp);

#endif	/* __XFS_TRANS_RESV_H__ */
Commit	Line	Data
7fd36c44 DC	1	/*
	2	* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
	3	* All Rights Reserved.
	4	*
	5	* This program is free software; you can redistribute it and/or
	6	* modify it under the terms of the GNU General Public License as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it would be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write the Free Software Foundation,
	16	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	17	*/
	18	#ifndef __XFS_TRANS_RESV_H__
	19	#define __XFS_TRANS_RESV_H__
	20
	21	struct xfs_mount;
	22
	23	/*
	24	* structure for maintaining pre-calculated transaction reservations.
	25	*/
0eadd102 JL	26	struct xfs_trans_res {
	27	uint tr_logres; /* log space unit in bytes per log ticket */
	28	int tr_logcount; /* number of log operations per log ticket */
	29	int tr_logflags; /* log flags, currently only used for indicating
	30	* a reservation request is permanent or not */
	31	};
	32
7fd36c44	33	struct xfs_trans_resv {
0eadd102 JL	34	struct xfs_trans_res tr_write; /* extent alloc trans */
	35	struct xfs_trans_res tr_itruncate; /* truncate trans */
	36	struct xfs_trans_res tr_rename; /* rename trans */
	37	struct xfs_trans_res tr_link; /* link trans */
	38	struct xfs_trans_res tr_remove; /* unlink trans */
	39	struct xfs_trans_res tr_symlink; /* symlink trans */
	40	struct xfs_trans_res tr_create; /* create trans */
99b6436b	41	struct xfs_trans_res tr_create_tmpfile; /* create O_TMPFILE trans */
0eadd102 JL	42	struct xfs_trans_res tr_mkdir; /* mkdir trans */
	43	struct xfs_trans_res tr_ifree; /* inode free trans */
	44	struct xfs_trans_res tr_ichange; /* inode update trans */
	45	struct xfs_trans_res tr_growdata; /* fs data section grow trans */
0eadd102 JL	46	struct xfs_trans_res tr_addafork; /* add inode attr fork trans */
	47	struct xfs_trans_res tr_writeid; /* write setuid/setgid file */
	48	struct xfs_trans_res tr_attrinval; /* attr fork buffer
	49	* invalidation */
	50	struct xfs_trans_res tr_attrsetm; /* set/create an attribute at
	51	* mount time */
	52	struct xfs_trans_res tr_attrsetrt; /* set/create an attribute at
	53	* runtime */
	54	struct xfs_trans_res tr_attrrm; /* remove an attribute */
	55	struct xfs_trans_res tr_clearagi; /* clear agi unlinked bucket */
	56	struct xfs_trans_res tr_growrtalloc; /* grow realtime allocations */
	57	struct xfs_trans_res tr_growrtzero; /* grow realtime zeroing */
	58	struct xfs_trans_res tr_growrtfree; /* grow realtime freeing */
0eadd102 JL	59	struct xfs_trans_res tr_qm_setqlim; /* adjust quota limits */
	60	struct xfs_trans_res tr_qm_dqalloc; /* allocate quota on disk */
	61	struct xfs_trans_res tr_qm_quotaoff; /* turn quota off */
	62	struct xfs_trans_res tr_qm_equotaoff;/* end of turn quota off */
	63	struct xfs_trans_res tr_sb; /* modify superblock */
20996c93	64	struct xfs_trans_res tr_fsyncts; /* update timestamps on fsync */
7fd36c44 DC	65	};
7fd36c44 DC	66
3d3c8b52 JL	67	/* shorthand way of accessing reservation structure */
	68	#define M_RES(mp) (&(mp)->m_resv)
	69
7fd36c44 DC	70	/*
	71	* Per-extent log reservation for the allocation btree changes
	72	* involved in freeing or allocating an extent.
	73	* 2 trees * (2 blocks/level * max depth - 1) * block size
	74	*/
	75	#define XFS_ALLOCFREE_LOG_RES(mp,nx) \
496817b4	76	((nx) * (2 * XFS_FSB_TO_B((mp), 2 * (mp)->m_ag_maxlevels - 1)))
7fd36c44	77	#define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
496817b4	78	((nx) * (2 * (2 * (mp)->m_ag_maxlevels - 1)))
7fd36c44 DC	79
	80	/*
	81	* Per-directory log reservation for any directory change.
	82	* dir blocks: (1 btree block per level + data block + free block) * dblock size
	83	* bmap btree: (levels + 2) * max depth * block size
	84	* v2 directory blocks can be fragmented below the dirblksize down to the fsb
	85	* size, so account for that in the DAENTER macros.
	86	*/
	87	#define XFS_DIROP_LOG_RES(mp) \
	88	(XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
	89	(XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
	90	#define XFS_DIROP_LOG_COUNT(mp) \
	91	(XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
	92	XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
	93
7fd36c44 DC	94	/*
	95	* Various log count values.
	96	*/
	97	#define XFS_DEFAULT_LOG_COUNT 1
	98	#define XFS_DEFAULT_PERM_LOG_COUNT 2
	99	#define XFS_ITRUNCATE_LOG_COUNT 2
	100	#define XFS_INACTIVE_LOG_COUNT 2
	101	#define XFS_CREATE_LOG_COUNT 2
99b6436b	102	#define XFS_CREATE_TMPFILE_LOG_COUNT 2
7fd36c44 DC	103	#define XFS_MKDIR_LOG_COUNT 3
	104	#define XFS_SYMLINK_LOG_COUNT 3
	105	#define XFS_REMOVE_LOG_COUNT 2
	106	#define XFS_LINK_LOG_COUNT 2
	107	#define XFS_RENAME_LOG_COUNT 2
	108	#define XFS_WRITE_LOG_COUNT 2
	109	#define XFS_ADDAFORK_LOG_COUNT 2
	110	#define XFS_ATTRINVAL_LOG_COUNT 1
	111	#define XFS_ATTRSET_LOG_COUNT 3
	112	#define XFS_ATTRRM_LOG_COUNT 3
	113
	114	void xfs_trans_resv_calc(struct xfs_mount mp, struct xfs_trans_resv resp);
	115
	116	#endif /* __XFS_TRANS_RESV_H__ */