1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6#ifndef	__XFS_TRANS_RESV_H__
7#define	__XFS_TRANS_RESV_H__
8
9struct xfs_mount;
10
11/*
12 * structure for maintaining pre-calculated transaction reservations.
13 */
14struct xfs_trans_res {
15	uint	tr_logres;	/* log space unit in bytes per log ticket */
16	int	tr_logcount;	/* number of log operations per log ticket */
17	int	tr_logflags;	/* log flags, currently only used for indicating
18				 * a reservation request is permanent or not */
19};
20
21struct xfs_trans_resv {
22	struct xfs_trans_res	tr_write;	/* extent alloc trans */
23	struct xfs_trans_res	tr_itruncate;	/* truncate trans */
24	struct xfs_trans_res	tr_rename;	/* rename trans */
25	struct xfs_trans_res	tr_link;	/* link trans */
26	struct xfs_trans_res	tr_remove;	/* unlink trans */
27	struct xfs_trans_res	tr_symlink;	/* symlink trans */
28	struct xfs_trans_res	tr_create;	/* create trans */
29	struct xfs_trans_res	tr_create_tmpfile; /* create O_TMPFILE trans */
30	struct xfs_trans_res	tr_mkdir;	/* mkdir trans */
31	struct xfs_trans_res	tr_ifree;	/* inode free trans */
32	struct xfs_trans_res	tr_ichange;	/* inode update trans */
33	struct xfs_trans_res	tr_growdata;	/* fs data section grow trans */
34	struct xfs_trans_res	tr_addafork;	/* add inode attr fork trans */
35	struct xfs_trans_res	tr_writeid;	/* write setuid/setgid file */
36	struct xfs_trans_res	tr_attrinval;	/* attr fork buffer
37						 * invalidation */
38	struct xfs_trans_res	tr_attrsetm;	/* set/create an attribute at
39						 * mount time */
40	struct xfs_trans_res	tr_attrsetrt;	/* set/create an attribute at
41						 * runtime */
42	struct xfs_trans_res	tr_attrrm;	/* remove an attribute */
43	struct xfs_trans_res	tr_clearagi;	/* clear agi unlinked bucket */
44	struct xfs_trans_res	tr_growrtalloc;	/* grow realtime allocations */
45	struct xfs_trans_res	tr_growrtzero;	/* grow realtime zeroing */
46	struct xfs_trans_res	tr_growrtfree;	/* grow realtime freeing */
47	struct xfs_trans_res	tr_qm_setqlim;	/* adjust quota limits */
48	struct xfs_trans_res	tr_qm_dqalloc;	/* allocate quota on disk */
49	struct xfs_trans_res	tr_sb;		/* modify superblock */
50	struct xfs_trans_res	tr_fsyncts;	/* update timestamps on fsync */
51};
52
53/* shorthand way of accessing reservation structure */
54#define M_RES(mp)	(&(mp)->m_resv)
55
56/*
57 * Per-directory log reservation for any directory change.
58 * dir blocks: (1 btree block per level + data block + free block) * dblock size
59 * bmap btree: (levels + 2) * max depth * block size
60 * v2 directory blocks can be fragmented below the dirblksize down to the fsb
61 * size, so account for that in the DAENTER macros.
62 */
63#define	XFS_DIROP_LOG_RES(mp)	\
64	(XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
65	 (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
66#define	XFS_DIROP_LOG_COUNT(mp)	\
67	(XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
68	 XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
69
70/*
71 * Various log count values.
72 */
73#define	XFS_DEFAULT_LOG_COUNT		1
74#define	XFS_DEFAULT_PERM_LOG_COUNT	2
75#define	XFS_ITRUNCATE_LOG_COUNT		2
76#define XFS_INACTIVE_LOG_COUNT		2
77#define	XFS_CREATE_LOG_COUNT		2
78#define	XFS_CREATE_TMPFILE_LOG_COUNT	2
79#define	XFS_MKDIR_LOG_COUNT		3
80#define	XFS_SYMLINK_LOG_COUNT		3
81#define	XFS_REMOVE_LOG_COUNT		2
82#define	XFS_LINK_LOG_COUNT		2
83#define	XFS_RENAME_LOG_COUNT		2
84#define	XFS_WRITE_LOG_COUNT		2
85#define	XFS_ADDAFORK_LOG_COUNT		2
86#define	XFS_ATTRINVAL_LOG_COUNT		1
87#define	XFS_ATTRSET_LOG_COUNT		3
88#define	XFS_ATTRRM_LOG_COUNT		3
89
90/*
91 * Original log operation counts were overestimated in the early days of
92 * reflink.  These are retained here purely for minimum log size calculations
93 * and must not be used for runtime reservations.
94 */
95#define	XFS_ITRUNCATE_LOG_COUNT_REFLINK	8
96#define	XFS_WRITE_LOG_COUNT_REFLINK	8
97
98void xfs_trans_resv_calc(struct xfs_mount *mp, struct xfs_trans_resv *resp);
99uint xfs_allocfree_block_count(struct xfs_mount *mp, uint num_ops);
100
101unsigned int xfs_calc_itruncate_reservation_minlogsize(struct xfs_mount *mp);
102unsigned int xfs_calc_write_reservation_minlogsize(struct xfs_mount *mp);
103unsigned int xfs_calc_qm_dqalloc_reservation_minlogsize(struct xfs_mount *mp);
104
105#endif	/* __XFS_TRANS_RESV_H__ */
106