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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 021110 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 84 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190524100844.756442981@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* uptodate.h
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*
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* Cluster uptodate tracking
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*
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* Copyright (C) 2002, 2004, 2005 Oracle. All rights reserved.
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*/
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#ifndef OCFS2_UPTODATE_H
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#define OCFS2_UPTODATE_H
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/*
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* The caching code relies on locking provided by the user of
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* struct ocfs2_caching_info. These operations connect that up.
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*/
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struct ocfs2_caching_operations {
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/*
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* A u64 representing the owning structure. Usually this
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* is the block number (i_blkno or whatnot). This is used so
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* that caching log messages can identify the owning structure.
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*/
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u64 (*co_owner)(struct ocfs2_caching_info *ci);
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/* The superblock is needed during I/O. */
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struct super_block *(*co_get_super)(struct ocfs2_caching_info *ci);
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/*
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* Lock and unlock the caching data. These will not sleep, and
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* should probably be spinlocks.
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*/
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void (*co_cache_lock)(struct ocfs2_caching_info *ci);
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void (*co_cache_unlock)(struct ocfs2_caching_info *ci);
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/*
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* Lock and unlock for disk I/O. These will sleep, and should
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* be mutexes.
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*/
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void (*co_io_lock)(struct ocfs2_caching_info *ci);
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void (*co_io_unlock)(struct ocfs2_caching_info *ci);
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};
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int __init init_ocfs2_uptodate_cache(void);
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void exit_ocfs2_uptodate_cache(void);
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void ocfs2_metadata_cache_init(struct ocfs2_caching_info *ci,
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const struct ocfs2_caching_operations *ops);
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void ocfs2_metadata_cache_purge(struct ocfs2_caching_info *ci);
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void ocfs2_metadata_cache_exit(struct ocfs2_caching_info *ci);
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u64 ocfs2_metadata_cache_owner(struct ocfs2_caching_info *ci);
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void ocfs2_metadata_cache_io_lock(struct ocfs2_caching_info *ci);
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void ocfs2_metadata_cache_io_unlock(struct ocfs2_caching_info *ci);
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int ocfs2_buffer_uptodate(struct ocfs2_caching_info *ci,
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struct buffer_head *bh);
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void ocfs2_set_buffer_uptodate(struct ocfs2_caching_info *ci,
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struct buffer_head *bh);
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void ocfs2_set_new_buffer_uptodate(struct ocfs2_caching_info *ci,
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struct buffer_head *bh);
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void ocfs2_remove_from_cache(struct ocfs2_caching_info *ci,
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struct buffer_head *bh);
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void ocfs2_remove_xattr_clusters_from_cache(struct ocfs2_caching_info *ci,
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sector_t block,
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u32 c_len);
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int ocfs2_buffer_read_ahead(struct ocfs2_caching_info *ci,
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struct buffer_head *bh);
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#endif /* OCFS2_UPTODATE_H */
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