Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /* -*- mode: c; c-basic-offset: 8; -*-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * vim: noexpandtab sw=8 ts=8 sts=0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * uptodate.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Cluster uptodate tracking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * Copyright (C) 2002, 2004, 2005 Oracle.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #ifndef OCFS2_UPTODATE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define OCFS2_UPTODATE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * The caching code relies on locking provided by the user of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * struct ocfs2_caching_info.  These operations connect that up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct ocfs2_caching_operations {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	 * A u64 representing the owning structure.  Usually this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	 * is the block number (i_blkno or whatnot).  This is used so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	 * that caching log messages can identify the owning structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	u64	(*co_owner)(struct ocfs2_caching_info *ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	/* The superblock is needed during I/O. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	struct super_block *(*co_get_super)(struct ocfs2_caching_info *ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	 * Lock and unlock the caching data.  These will not sleep, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	 * should probably be spinlocks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	void	(*co_cache_lock)(struct ocfs2_caching_info *ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	void	(*co_cache_unlock)(struct ocfs2_caching_info *ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	 * Lock and unlock for disk I/O.  These will sleep, and should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	 * be mutexes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	void	(*co_io_lock)(struct ocfs2_caching_info *ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	void	(*co_io_unlock)(struct ocfs2_caching_info *ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int __init init_ocfs2_uptodate_cache(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) void exit_ocfs2_uptodate_cache(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) void ocfs2_metadata_cache_init(struct ocfs2_caching_info *ci,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 			       const struct ocfs2_caching_operations *ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) void ocfs2_metadata_cache_purge(struct ocfs2_caching_info *ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) void ocfs2_metadata_cache_exit(struct ocfs2_caching_info *ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u64 ocfs2_metadata_cache_owner(struct ocfs2_caching_info *ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) void ocfs2_metadata_cache_io_lock(struct ocfs2_caching_info *ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) void ocfs2_metadata_cache_io_unlock(struct ocfs2_caching_info *ci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) int ocfs2_buffer_uptodate(struct ocfs2_caching_info *ci,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 			  struct buffer_head *bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) void ocfs2_set_buffer_uptodate(struct ocfs2_caching_info *ci,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 			       struct buffer_head *bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) void ocfs2_set_new_buffer_uptodate(struct ocfs2_caching_info *ci,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 				   struct buffer_head *bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) void ocfs2_remove_from_cache(struct ocfs2_caching_info *ci,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 			     struct buffer_head *bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) void ocfs2_remove_xattr_clusters_from_cache(struct ocfs2_caching_info *ci,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 					    sector_t block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 					    u32 c_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) int ocfs2_buffer_read_ahead(struct ocfs2_caching_info *ci,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 			    struct buffer_head *bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #endif /* OCFS2_UPTODATE_H */