1328970deSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*fa60ce2cSMasahiro Yamada /* 3ccd979bdSMark Fasheh * uptodate.h 4ccd979bdSMark Fasheh * 5ccd979bdSMark Fasheh * Cluster uptodate tracking 6ccd979bdSMark Fasheh * 7ccd979bdSMark Fasheh * Copyright (C) 2002, 2004, 2005 Oracle. All rights reserved. 8ccd979bdSMark Fasheh */ 9ccd979bdSMark Fasheh 10ccd979bdSMark Fasheh #ifndef OCFS2_UPTODATE_H 11ccd979bdSMark Fasheh #define OCFS2_UPTODATE_H 12ccd979bdSMark Fasheh 136e5a3d75SJoel Becker /* 146e5a3d75SJoel Becker * The caching code relies on locking provided by the user of 156e5a3d75SJoel Becker * struct ocfs2_caching_info. These operations connect that up. 166e5a3d75SJoel Becker */ 176e5a3d75SJoel Becker struct ocfs2_caching_operations { 186e5a3d75SJoel Becker /* 196e5a3d75SJoel Becker * A u64 representing the owning structure. Usually this 206e5a3d75SJoel Becker * is the block number (i_blkno or whatnot). This is used so 216e5a3d75SJoel Becker * that caching log messages can identify the owning structure. 226e5a3d75SJoel Becker */ 236e5a3d75SJoel Becker u64 (*co_owner)(struct ocfs2_caching_info *ci); 246e5a3d75SJoel Becker 258cb471e8SJoel Becker /* The superblock is needed during I/O. */ 268cb471e8SJoel Becker struct super_block *(*co_get_super)(struct ocfs2_caching_info *ci); 276e5a3d75SJoel Becker /* 286e5a3d75SJoel Becker * Lock and unlock the caching data. These will not sleep, and 296e5a3d75SJoel Becker * should probably be spinlocks. 306e5a3d75SJoel Becker */ 316e5a3d75SJoel Becker void (*co_cache_lock)(struct ocfs2_caching_info *ci); 326e5a3d75SJoel Becker void (*co_cache_unlock)(struct ocfs2_caching_info *ci); 336e5a3d75SJoel Becker 346e5a3d75SJoel Becker /* 356e5a3d75SJoel Becker * Lock and unlock for disk I/O. These will sleep, and should 366e5a3d75SJoel Becker * be mutexes. 376e5a3d75SJoel Becker */ 386e5a3d75SJoel Becker void (*co_io_lock)(struct ocfs2_caching_info *ci); 396e5a3d75SJoel Becker void (*co_io_unlock)(struct ocfs2_caching_info *ci); 406e5a3d75SJoel Becker }; 416e5a3d75SJoel Becker 42ccd979bdSMark Fasheh int __init init_ocfs2_uptodate_cache(void); 430c6c98fbSAdrian Bunk void exit_ocfs2_uptodate_cache(void); 44ccd979bdSMark Fasheh 4547460d65SJoel Becker void ocfs2_metadata_cache_init(struct ocfs2_caching_info *ci, 466e5a3d75SJoel Becker const struct ocfs2_caching_operations *ops); 478cb471e8SJoel Becker void ocfs2_metadata_cache_purge(struct ocfs2_caching_info *ci); 4866fb345dSJoel Becker void ocfs2_metadata_cache_exit(struct ocfs2_caching_info *ci); 49ccd979bdSMark Fasheh 508cb471e8SJoel Becker u64 ocfs2_metadata_cache_owner(struct ocfs2_caching_info *ci); 518cb471e8SJoel Becker void ocfs2_metadata_cache_io_lock(struct ocfs2_caching_info *ci); 528cb471e8SJoel Becker void ocfs2_metadata_cache_io_unlock(struct ocfs2_caching_info *ci); 538cb471e8SJoel Becker 548cb471e8SJoel Becker int ocfs2_buffer_uptodate(struct ocfs2_caching_info *ci, 55ccd979bdSMark Fasheh struct buffer_head *bh); 568cb471e8SJoel Becker void ocfs2_set_buffer_uptodate(struct ocfs2_caching_info *ci, 57ccd979bdSMark Fasheh struct buffer_head *bh); 588cb471e8SJoel Becker void ocfs2_set_new_buffer_uptodate(struct ocfs2_caching_info *ci, 59ccd979bdSMark Fasheh struct buffer_head *bh); 608cb471e8SJoel Becker void ocfs2_remove_from_cache(struct ocfs2_caching_info *ci, 61ccd979bdSMark Fasheh struct buffer_head *bh); 628cb471e8SJoel Becker void ocfs2_remove_xattr_clusters_from_cache(struct ocfs2_caching_info *ci, 63ac11c827STao Ma sector_t block, 64ac11c827STao Ma u32 c_len); 658cb471e8SJoel Becker int ocfs2_buffer_read_ahead(struct ocfs2_caching_info *ci, 66aa958874SMark Fasheh struct buffer_head *bh); 67ccd979bdSMark Fasheh 68ccd979bdSMark Fasheh #endif /* OCFS2_UPTODATE_H */ 69