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ae98043f | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
6c98cd4e KS |
2 | /* |
3 | * sufile.h - NILFS segment usage file. | |
4 | * | |
5 | * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation. | |
6 | * | |
4b420ab4 | 7 | * Written by Koji Sato. |
6c98cd4e KS |
8 | */ |
9 | ||
10 | #ifndef _NILFS_SUFILE_H | |
11 | #define _NILFS_SUFILE_H | |
12 | ||
13 | #include <linux/fs.h> | |
14 | #include <linux/buffer_head.h> | |
6c98cd4e KS |
15 | #include "mdt.h" |
16 | ||
6c98cd4e KS |
17 | |
18 | static inline unsigned long nilfs_sufile_get_nsegments(struct inode *sufile) | |
19 | { | |
0ef28f9a | 20 | return ((struct the_nilfs *)sufile->i_sb->s_fs_info)->ns_nsegments; |
6c98cd4e KS |
21 | } |
22 | ||
ef7d4757 RK |
23 | unsigned long nilfs_sufile_get_ncleansegs(struct inode *sufile); |
24 | ||
619205da | 25 | int nilfs_sufile_set_alloc_range(struct inode *sufile, __u64 start, __u64 end); |
6c98cd4e | 26 | int nilfs_sufile_alloc(struct inode *, __u64 *); |
61a189e9 | 27 | int nilfs_sufile_mark_dirty(struct inode *sufile, __u64 segnum); |
071ec54d | 28 | int nilfs_sufile_set_segment_usage(struct inode *sufile, __u64 segnum, |
fb04b91b | 29 | unsigned long nblocks, time64_t modtime); |
6c98cd4e | 30 | int nilfs_sufile_get_stat(struct inode *, struct nilfs_sustat *); |
f19e78de | 31 | ssize_t nilfs_sufile_get_suinfo(struct inode *, __u64, void *, unsigned int, |
6c98cd4e | 32 | size_t); |
f19e78de | 33 | ssize_t nilfs_sufile_set_suinfo(struct inode *, void *, unsigned int, size_t); |
6c98cd4e | 34 | |
dda54f4b RK |
35 | int nilfs_sufile_updatev(struct inode *, __u64 *, size_t, int, size_t *, |
36 | void (*dofunc)(struct inode *, __u64, | |
37 | struct buffer_head *, | |
38 | struct buffer_head *)); | |
a703018f RK |
39 | int nilfs_sufile_update(struct inode *, __u64, int, |
40 | void (*dofunc)(struct inode *, __u64, | |
41 | struct buffer_head *, | |
42 | struct buffer_head *)); | |
c85399c2 RK |
43 | void nilfs_sufile_do_scrap(struct inode *, __u64, struct buffer_head *, |
44 | struct buffer_head *); | |
a703018f RK |
45 | void nilfs_sufile_do_free(struct inode *, __u64, struct buffer_head *, |
46 | struct buffer_head *); | |
071cb4b8 RK |
47 | void nilfs_sufile_do_cancel_free(struct inode *, __u64, struct buffer_head *, |
48 | struct buffer_head *); | |
a703018f RK |
49 | void nilfs_sufile_do_set_error(struct inode *, __u64, struct buffer_head *, |
50 | struct buffer_head *); | |
51 | ||
4e33f9ea | 52 | int nilfs_sufile_resize(struct inode *sufile, __u64 newnsegs); |
f1e89c86 RK |
53 | int nilfs_sufile_read(struct super_block *sb, size_t susize, |
54 | struct nilfs_inode *raw_inode, struct inode **inodep); | |
82e11e85 | 55 | int nilfs_sufile_trim_fs(struct inode *sufile, struct fstrim_range *range); |
79739565 | 56 | |
c85399c2 RK |
57 | /** |
58 | * nilfs_sufile_scrap - make a segment garbage | |
59 | * @sufile: inode of segment usage file | |
60 | * @segnum: segment number to be freed | |
61 | */ | |
62 | static inline int nilfs_sufile_scrap(struct inode *sufile, __u64 segnum) | |
63 | { | |
64 | return nilfs_sufile_update(sufile, segnum, 1, nilfs_sufile_do_scrap); | |
65 | } | |
66 | ||
a703018f RK |
67 | /** |
68 | * nilfs_sufile_free - free segment | |
69 | * @sufile: inode of segment usage file | |
70 | * @segnum: segment number to be freed | |
71 | */ | |
72 | static inline int nilfs_sufile_free(struct inode *sufile, __u64 segnum) | |
73 | { | |
74 | return nilfs_sufile_update(sufile, segnum, 0, nilfs_sufile_do_free); | |
75 | } | |
76 | ||
071cb4b8 RK |
77 | /** |
78 | * nilfs_sufile_freev - free segments | |
79 | * @sufile: inode of segment usage file | |
80 | * @segnumv: array of segment numbers | |
81 | * @nsegs: size of @segnumv array | |
82 | * @ndone: place to store the number of freed segments | |
83 | */ | |
84 | static inline int nilfs_sufile_freev(struct inode *sufile, __u64 *segnumv, | |
85 | size_t nsegs, size_t *ndone) | |
86 | { | |
87 | return nilfs_sufile_updatev(sufile, segnumv, nsegs, 0, ndone, | |
88 | nilfs_sufile_do_free); | |
89 | } | |
90 | ||
91 | /** | |
92 | * nilfs_sufile_cancel_freev - reallocate freeing segments | |
93 | * @sufile: inode of segment usage file | |
94 | * @segnumv: array of segment numbers | |
95 | * @nsegs: size of @segnumv array | |
96 | * @ndone: place to store the number of cancelled segments | |
97 | * | |
98 | * Return Value: On success, 0 is returned. On error, a negative error codes | |
99 | * is returned. | |
100 | */ | |
101 | static inline int nilfs_sufile_cancel_freev(struct inode *sufile, | |
102 | __u64 *segnumv, size_t nsegs, | |
103 | size_t *ndone) | |
104 | { | |
105 | return nilfs_sufile_updatev(sufile, segnumv, nsegs, 0, ndone, | |
106 | nilfs_sufile_do_cancel_free); | |
107 | } | |
108 | ||
a703018f RK |
109 | /** |
110 | * nilfs_sufile_set_error - mark a segment as erroneous | |
111 | * @sufile: inode of segment usage file | |
112 | * @segnum: segment number | |
113 | * | |
114 | * Description: nilfs_sufile_set_error() marks the segment specified by | |
115 | * @segnum as erroneous. The error segment will never be used again. | |
116 | * | |
117 | * Return Value: On success, 0 is returned. On error, one of the following | |
118 | * negative error codes is returned. | |
119 | * | |
120 | * %-EIO - I/O error. | |
121 | * | |
122 | * %-ENOMEM - Insufficient amount of memory available. | |
123 | * | |
124 | * %-EINVAL - Invalid segment usage number. | |
125 | */ | |
126 | static inline int nilfs_sufile_set_error(struct inode *sufile, __u64 segnum) | |
127 | { | |
128 | return nilfs_sufile_update(sufile, segnum, 0, | |
129 | nilfs_sufile_do_set_error); | |
130 | } | |
6c98cd4e KS |
131 | |
132 | #endif /* _NILFS_SUFILE_H */ |