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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 LT |
5 | */ |
6 | #ifndef __XFS_RTALLOC_H__ | |
7 | #define __XFS_RTALLOC_H__ | |
8 | ||
c7298202 DC |
9 | /* kernel only definitions and functions */ |
10 | ||
1da177e4 LT |
11 | struct xfs_mount; |
12 | struct xfs_trans; | |
13 | ||
a0e5c435 DW |
14 | /* |
15 | * XXX: Most of the realtime allocation functions deal in units of realtime | |
16 | * extents, not realtime blocks. This looks funny when paired with the type | |
17 | * name and screams for a larger cleanup. | |
18 | */ | |
fb3c3de2 | 19 | struct xfs_rtalloc_rec { |
a0e5c435 DW |
20 | xfs_rtblock_t ar_startext; |
21 | xfs_rtblock_t ar_extcount; | |
fb3c3de2 DW |
22 | }; |
23 | ||
24 | typedef int (*xfs_rtalloc_query_range_fn)( | |
f34061f5 | 25 | struct xfs_mount *mp, |
159eb69d DW |
26 | struct xfs_trans *tp, |
27 | const struct xfs_rtalloc_rec *rec, | |
28 | void *priv); | |
fb3c3de2 | 29 | |
1da177e4 LT |
30 | #ifdef CONFIG_XFS_RT |
31 | /* | |
32 | * Function prototypes for exported functions. | |
33 | */ | |
34 | ||
35 | /* | |
36 | * Allocate an extent in the realtime subvolume, with the usual allocation | |
37 | * parameters. The length units are all in realtime extents, as is the | |
38 | * result block number. | |
39 | */ | |
40 | int /* error */ | |
41 | xfs_rtallocate_extent( | |
42 | struct xfs_trans *tp, /* transaction pointer */ | |
43 | xfs_rtblock_t bno, /* starting block number to allocate */ | |
44 | xfs_extlen_t minlen, /* minimum length to allocate */ | |
45 | xfs_extlen_t maxlen, /* maximum length to allocate */ | |
46 | xfs_extlen_t *len, /* out: actual length allocated */ | |
1da177e4 LT |
47 | int wasdel, /* was a delayed allocation extent */ |
48 | xfs_extlen_t prod, /* extent product factor */ | |
49 | xfs_rtblock_t *rtblock); /* out: start block allocated */ | |
50 | ||
51 | /* | |
52 | * Free an extent in the realtime subvolume. Length is expressed in | |
53 | * realtime extents, as is the block number. | |
54 | */ | |
55 | int /* error */ | |
56 | xfs_rtfree_extent( | |
57 | struct xfs_trans *tp, /* transaction pointer */ | |
58 | xfs_rtblock_t bno, /* starting block number to free */ | |
59 | xfs_extlen_t len); /* length of extent freed */ | |
60 | ||
61 | /* | |
62 | * Initialize realtime fields in the mount structure. | |
63 | */ | |
64 | int /* error */ | |
65 | xfs_rtmount_init( | |
66 | struct xfs_mount *mp); /* file system mount structure */ | |
b93b6e43 CH |
67 | void |
68 | xfs_rtunmount_inodes( | |
69 | struct xfs_mount *mp); | |
1da177e4 LT |
70 | |
71 | /* | |
72 | * Get the bitmap and summary inodes into the mount structure | |
73 | * at mount time. | |
74 | */ | |
75 | int /* error */ | |
76 | xfs_rtmount_inodes( | |
77 | struct xfs_mount *mp); /* file system mount structure */ | |
78 | ||
79 | /* | |
80 | * Pick an extent for allocation at the start of a new realtime file. | |
81 | * Use the sequence number stored in the atime field of the bitmap inode. | |
82 | * Translate this to a fraction of the rtextents, and return the product | |
83 | * of rtextents and the fraction. | |
84 | * The fraction sequence is 0, 1/2, 1/4, 3/4, 1/8, ..., 7/8, 1/16, ... | |
85 | */ | |
86 | int /* error */ | |
87 | xfs_rtpick_extent( | |
88 | struct xfs_mount *mp, /* file system mount point */ | |
89 | struct xfs_trans *tp, /* transaction pointer */ | |
90 | xfs_extlen_t len, /* allocation length (rtextents) */ | |
91 | xfs_rtblock_t *pick); /* result rt extent */ | |
92 | ||
1da177e4 LT |
93 | /* |
94 | * Grow the realtime area of the filesystem. | |
95 | */ | |
96 | int | |
97 | xfs_growfs_rt( | |
98 | struct xfs_mount *mp, /* file system mount structure */ | |
99 | xfs_growfs_rt_t *in); /* user supplied growfs struct */ | |
100 | ||
c963c619 DC |
101 | /* |
102 | * From xfs_rtbitmap.c | |
103 | */ | |
26788097 DW |
104 | int xfs_rtbuf_get(struct xfs_mount *mp, struct xfs_trans *tp, |
105 | xfs_rtblock_t block, int issum, struct xfs_buf **bpp); | |
c963c619 DC |
106 | int xfs_rtcheck_range(struct xfs_mount *mp, struct xfs_trans *tp, |
107 | xfs_rtblock_t start, xfs_extlen_t len, int val, | |
108 | xfs_rtblock_t *new, int *stat); | |
109 | int xfs_rtfind_back(struct xfs_mount *mp, struct xfs_trans *tp, | |
110 | xfs_rtblock_t start, xfs_rtblock_t limit, | |
111 | xfs_rtblock_t *rtblock); | |
112 | int xfs_rtfind_forw(struct xfs_mount *mp, struct xfs_trans *tp, | |
113 | xfs_rtblock_t start, xfs_rtblock_t limit, | |
114 | xfs_rtblock_t *rtblock); | |
115 | int xfs_rtmodify_range(struct xfs_mount *mp, struct xfs_trans *tp, | |
116 | xfs_rtblock_t start, xfs_extlen_t len, int val); | |
afabfd30 ES |
117 | int xfs_rtmodify_summary_int(struct xfs_mount *mp, struct xfs_trans *tp, |
118 | int log, xfs_rtblock_t bbno, int delta, | |
e8222613 | 119 | struct xfs_buf **rbpp, xfs_fsblock_t *rsb, |
afabfd30 | 120 | xfs_suminfo_t *sum); |
c963c619 | 121 | int xfs_rtmodify_summary(struct xfs_mount *mp, struct xfs_trans *tp, int log, |
e8222613 | 122 | xfs_rtblock_t bbno, int delta, struct xfs_buf **rbpp, |
c963c619 DC |
123 | xfs_fsblock_t *rsb); |
124 | int xfs_rtfree_range(struct xfs_mount *mp, struct xfs_trans *tp, | |
125 | xfs_rtblock_t start, xfs_extlen_t len, | |
126 | struct xfs_buf **rbpp, xfs_fsblock_t *rsb); | |
f34061f5 | 127 | int xfs_rtalloc_query_range(struct xfs_mount *mp, struct xfs_trans *tp, |
c02f6529 DW |
128 | const struct xfs_rtalloc_rec *low_rec, |
129 | const struct xfs_rtalloc_rec *high_rec, | |
130 | xfs_rtalloc_query_range_fn fn, void *priv); | |
f34061f5 | 131 | int xfs_rtalloc_query_all(struct xfs_mount *mp, struct xfs_trans *tp, |
fb3c3de2 DW |
132 | xfs_rtalloc_query_range_fn fn, |
133 | void *priv); | |
21ec5416 | 134 | bool xfs_verify_rtbno(struct xfs_mount *mp, xfs_rtblock_t rtbno); |
46d9bfb5 DW |
135 | int xfs_rtalloc_extent_is_free(struct xfs_mount *mp, struct xfs_trans *tp, |
136 | xfs_rtblock_t start, xfs_extlen_t len, | |
137 | bool *is_free); | |
5a605fd6 | 138 | int xfs_rtalloc_reinit_frextents(struct xfs_mount *mp); |
1da177e4 | 139 | #else |
089ec2f8 | 140 | # define xfs_rtallocate_extent(t,b,min,max,l,f,p,rb) (ENOSYS) |
1da177e4 LT |
141 | # define xfs_rtfree_extent(t,b,l) (ENOSYS) |
142 | # define xfs_rtpick_extent(m,t,l,rb) (ENOSYS) | |
143 | # define xfs_growfs_rt(mp,in) (ENOSYS) | |
fb3c3de2 | 144 | # define xfs_rtalloc_query_range(t,l,h,f,p) (ENOSYS) |
f34061f5 | 145 | # define xfs_rtalloc_query_all(m,t,f,p) (ENOSYS) |
26788097 | 146 | # define xfs_rtbuf_get(m,t,b,i,p) (ENOSYS) |
21ec5416 | 147 | # define xfs_verify_rtbno(m, r) (false) |
46d9bfb5 | 148 | # define xfs_rtalloc_extent_is_free(m,t,s,l,i) (ENOSYS) |
5a605fd6 | 149 | # define xfs_rtalloc_reinit_frextents(m) (0) |
32891b29 ES |
150 | static inline int /* error */ |
151 | xfs_rtmount_init( | |
152 | xfs_mount_t *mp) /* file system mount structure */ | |
153 | { | |
154 | if (mp->m_sb.sb_rblocks == 0) | |
155 | return 0; | |
156 | ||
0b932ccc | 157 | xfs_warn(mp, "Not built with CONFIG_XFS_RT"); |
2451337d | 158 | return -ENOSYS; |
32891b29 | 159 | } |
1da177e4 | 160 | # define xfs_rtmount_inodes(m) (((mp)->m_sb.sb_rblocks == 0)? 0 : (ENOSYS)) |
b93b6e43 | 161 | # define xfs_rtunmount_inodes(m) |
1da177e4 LT |
162 | #endif /* CONFIG_XFS_RT */ |
163 | ||
1da177e4 | 164 | #endif /* __XFS_RTALLOC_H__ */ |