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
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.