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328970de | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
fa60ce2c | 2 | /* |
ccd979bd MF |
3 | * uptodate.h |
4 | * | |
5 | * Cluster uptodate tracking | |
6 | * | |
7 | * Copyright (C) 2002, 2004, 2005 Oracle. All rights reserved. | |
ccd979bd MF |
8 | */ |
9 | ||
10 | #ifndef OCFS2_UPTODATE_H | |
11 | #define OCFS2_UPTODATE_H | |
12 | ||
6e5a3d75 JB |
13 | /* |
14 | * The caching code relies on locking provided by the user of | |
15 | * struct ocfs2_caching_info. These operations connect that up. | |
16 | */ | |
17 | struct ocfs2_caching_operations { | |
18 | /* | |
19 | * A u64 representing the owning structure. Usually this | |
20 | * is the block number (i_blkno or whatnot). This is used so | |
21 | * that caching log messages can identify the owning structure. | |
22 | */ | |
23 | u64 (*co_owner)(struct ocfs2_caching_info *ci); | |
24 | ||
8cb471e8 JB |
25 | /* The superblock is needed during I/O. */ |
26 | struct super_block *(*co_get_super)(struct ocfs2_caching_info *ci); | |
6e5a3d75 JB |
27 | /* |
28 | * Lock and unlock the caching data. These will not sleep, and | |
29 | * should probably be spinlocks. | |
30 | */ | |
31 | void (*co_cache_lock)(struct ocfs2_caching_info *ci); | |
32 | void (*co_cache_unlock)(struct ocfs2_caching_info *ci); | |
33 | ||
34 | /* | |
35 | * Lock and unlock for disk I/O. These will sleep, and should | |
36 | * be mutexes. | |
37 | */ | |
38 | void (*co_io_lock)(struct ocfs2_caching_info *ci); | |
39 | void (*co_io_unlock)(struct ocfs2_caching_info *ci); | |
40 | }; | |
41 | ||
ccd979bd | 42 | int __init init_ocfs2_uptodate_cache(void); |
0c6c98fb | 43 | void exit_ocfs2_uptodate_cache(void); |
ccd979bd | 44 | |
47460d65 | 45 | void ocfs2_metadata_cache_init(struct ocfs2_caching_info *ci, |
6e5a3d75 | 46 | const struct ocfs2_caching_operations *ops); |
8cb471e8 | 47 | void ocfs2_metadata_cache_purge(struct ocfs2_caching_info *ci); |
66fb345d | 48 | void ocfs2_metadata_cache_exit(struct ocfs2_caching_info *ci); |
ccd979bd | 49 | |
8cb471e8 | 50 | u64 ocfs2_metadata_cache_owner(struct ocfs2_caching_info *ci); |
8cb471e8 JB |
51 | void ocfs2_metadata_cache_io_lock(struct ocfs2_caching_info *ci); |
52 | void ocfs2_metadata_cache_io_unlock(struct ocfs2_caching_info *ci); | |
53 | ||
54 | int ocfs2_buffer_uptodate(struct ocfs2_caching_info *ci, | |
ccd979bd | 55 | struct buffer_head *bh); |
8cb471e8 | 56 | void ocfs2_set_buffer_uptodate(struct ocfs2_caching_info *ci, |
ccd979bd | 57 | struct buffer_head *bh); |
8cb471e8 | 58 | void ocfs2_set_new_buffer_uptodate(struct ocfs2_caching_info *ci, |
ccd979bd | 59 | struct buffer_head *bh); |
8cb471e8 | 60 | void ocfs2_remove_from_cache(struct ocfs2_caching_info *ci, |
ccd979bd | 61 | struct buffer_head *bh); |
8cb471e8 | 62 | void ocfs2_remove_xattr_clusters_from_cache(struct ocfs2_caching_info *ci, |
ac11c827 TM |
63 | sector_t block, |
64 | u32 c_len); | |
8cb471e8 | 65 | int ocfs2_buffer_read_ahead(struct ocfs2_caching_info *ci, |
aa958874 | 66 | struct buffer_head *bh); |
ccd979bd MF |
67 | |
68 | #endif /* OCFS2_UPTODATE_H */ |