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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - fs/ocfs2/uptodate.h
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
7 * Cluster uptodate tracking
9 * Copyright (C) 2002, 2004, 2005 Oracle. All rights reserved.
12 #ifndef OCFS2_UPTODATE_H
13 #define OCFS2_UPTODATE_H
16 * The caching code relies on locking provided by the user of
17 * struct ocfs2_caching_info. These operations connect that up.
19 struct ocfs2_caching_operations
{
21 * A u64 representing the owning structure. Usually this
22 * is the block number (i_blkno or whatnot). This is used so
23 * that caching log messages can identify the owning structure.
25 u64 (*co_owner
)(struct ocfs2_caching_info
*ci
);
27 /* The superblock is needed during I/O. */
28 struct super_block
*(*co_get_super
)(struct ocfs2_caching_info
*ci
);
30 * Lock and unlock the caching data. These will not sleep, and
31 * should probably be spinlocks.
33 void (*co_cache_lock
)(struct ocfs2_caching_info
*ci
);
34 void (*co_cache_unlock
)(struct ocfs2_caching_info
*ci
);
37 * Lock and unlock for disk I/O. These will sleep, and should
40 void (*co_io_lock
)(struct ocfs2_caching_info
*ci
);
41 void (*co_io_unlock
)(struct ocfs2_caching_info
*ci
);
44 int __init
init_ocfs2_uptodate_cache(void);
45 void exit_ocfs2_uptodate_cache(void);
47 void ocfs2_metadata_cache_init(struct ocfs2_caching_info
*ci
,
48 const struct ocfs2_caching_operations
*ops
);
49 void ocfs2_metadata_cache_purge(struct ocfs2_caching_info
*ci
);
50 void ocfs2_metadata_cache_exit(struct ocfs2_caching_info
*ci
);
52 u64
ocfs2_metadata_cache_owner(struct ocfs2_caching_info
*ci
);
53 void ocfs2_metadata_cache_io_lock(struct ocfs2_caching_info
*ci
);
54 void ocfs2_metadata_cache_io_unlock(struct ocfs2_caching_info
*ci
);
56 int ocfs2_buffer_uptodate(struct ocfs2_caching_info
*ci
,
57 struct buffer_head
*bh
);
58 void ocfs2_set_buffer_uptodate(struct ocfs2_caching_info
*ci
,
59 struct buffer_head
*bh
);
60 void ocfs2_set_new_buffer_uptodate(struct ocfs2_caching_info
*ci
,
61 struct buffer_head
*bh
);
62 void ocfs2_remove_from_cache(struct ocfs2_caching_info
*ci
,
63 struct buffer_head
*bh
);
64 void ocfs2_remove_xattr_clusters_from_cache(struct ocfs2_caching_info
*ci
,
67 int ocfs2_buffer_read_ahead(struct ocfs2_caching_info
*ci
,
68 struct buffer_head
*bh
);
70 #endif /* OCFS2_UPTODATE_H */