xref: /openbmc/linux/fs/xfs/libxfs/xfs_trans_resv.h (revision 6ed7e509)
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 
9 struct xfs_mount;
10 
11 /*
12  * structure for maintaining pre-calculated transaction reservations.
13  */
14 struct 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 
21 struct 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 
98 void xfs_trans_resv_calc(struct xfs_mount *mp, struct xfs_trans_resv *resp);
99 uint xfs_allocfree_block_count(struct xfs_mount *mp, uint num_ops);
100 
101 unsigned int xfs_calc_itruncate_reservation_minlogsize(struct xfs_mount *mp);
102 unsigned int xfs_calc_write_reservation_minlogsize(struct xfs_mount *mp);
103 unsigned int xfs_calc_qm_dqalloc_reservation_minlogsize(struct xfs_mount *mp);
104 
105 #endif	/* __XFS_TRANS_RESV_H__ */
106