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
21struct xfs_mount;
22
23/*
24 * structure for maintaining pre-calculated transaction reservations.
25 */
26struct 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
33struct xfs_trans_resv {
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 */
41	struct xfs_trans_res	tr_create_tmpfile; /* create O_TMPFILE trans */
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 */
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 */
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 */
64	struct xfs_trans_res	tr_fsyncts;	/* update timestamps on fsync */
65};
66
67/* shorthand way of accessing reservation structure */
68#define M_RES(mp)	(&(mp)->m_resv)
69
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) \
76	((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1)))
77#define	XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
78	((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))
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
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
102#define	XFS_CREATE_TMPFILE_LOG_COUNT	2
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
114void xfs_trans_resv_calc(struct xfs_mount *mp, struct xfs_trans_resv *resp);
115
116#endif	/* __XFS_TRANS_RESV_H__ */
117