/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* uptodate . h
*
* Cluster uptodate tracking
*
* Copyright ( C ) 2002 , 2004 , 2005 Oracle . All rights reserved .
*/
#ifndef OCFS2_UPTODATE_H
#define OCFS2_UPTODATE_H
/*
* The caching code relies on locking provided by the user of
* struct ocfs2_caching_info . These operations connect that up .
*/
struct ocfs2_caching_operations {
/*
* A u64 representing the owning structure . Usually this
* is the block number ( i_blkno or whatnot ) . This is used so
* that caching log messages can identify the owning structure .
*/
u64 (*co_owner)(struct ocfs2_caching_info *ci);
/* The superblock is needed during I/O. */
struct super_block *(*co_get_super)(struct ocfs2_caching_info *ci);
/*
* Lock and unlock the caching data . These will not sleep , and
* should probably be spinlocks .
*/
void (*co_cache_lock)(struct ocfs2_caching_info *ci);
void (*co_cache_unlock)(struct ocfs2_caching_info *ci);
/*
* Lock and unlock for disk I / O . These will sleep , and should
* be mutexes .
*/
void (*co_io_lock)(struct ocfs2_caching_info *ci);
void (*co_io_unlock)(struct ocfs2_caching_info *ci);
};
int __init init_ocfs2_uptodate_cache(void );
void exit_ocfs2_uptodate_cache(void );
void ocfs2_metadata_cache_init(struct ocfs2_caching_info *ci,
const struct ocfs2_caching_operations *ops);
void ocfs2_metadata_cache_purge(struct ocfs2_caching_info *ci);
void ocfs2_metadata_cache_exit(struct ocfs2_caching_info *ci);
u64 ocfs2_metadata_cache_owner(struct ocfs2_caching_info *ci);
void ocfs2_metadata_cache_io_lock(struct ocfs2_caching_info *ci);
void ocfs2_metadata_cache_io_unlock(struct ocfs2_caching_info *ci);
int ocfs2_buffer_uptodate(struct ocfs2_caching_info *ci,
struct buffer_head *bh);
void ocfs2_set_buffer_uptodate(struct ocfs2_caching_info *ci,
struct buffer_head *bh);
void ocfs2_set_new_buffer_uptodate(struct ocfs2_caching_info *ci,
struct buffer_head *bh);
void ocfs2_remove_from_cache(struct ocfs2_caching_info *ci,
struct buffer_head *bh);
void ocfs2_remove_xattr_clusters_from_cache(struct ocfs2_caching_info *ci,
sector_t block,
u32 c_len);
int ocfs2_buffer_read_ahead(struct ocfs2_caching_info *ci,
struct buffer_head *bh);
#endif /* OCFS2_UPTODATE_H */
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(vorverarbeitet am 2026-09-28)
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