1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * dcache.h
4 *
5 * Function prototypes
6 *
7 * Copyright (C) 2002, 2004 Oracle.  All rights reserved.
8 */
9
10#ifndef OCFS2_DCACHE_H
11#define OCFS2_DCACHE_H
12
13extern const struct dentry_operations ocfs2_dentry_ops;
14
15struct ocfs2_dentry_lock {
16	unsigned int		dl_count;
17	u64			dl_parent_blkno;
18
19	/*
20	 * The ocfs2_dentry_lock keeps an inode reference until
21	 * dl_lockres has been destroyed. This is usually done in
22	 * ->d_iput() anyway, so there should be minimal impact.
23	 */
24	struct inode		*dl_inode;
25	struct ocfs2_lock_res	dl_lockres;
26};
27
28int ocfs2_dentry_attach_lock(struct dentry *dentry, struct inode *inode,
29			     u64 parent_blkno);
30
31void ocfs2_dentry_lock_put(struct ocfs2_super *osb,
32			   struct ocfs2_dentry_lock *dl);
33
34struct dentry *ocfs2_find_local_alias(struct inode *inode, u64 parent_blkno,
35				      int skip_unhashed);
36
37void ocfs2_dentry_move(struct dentry *dentry, struct dentry *target,
38		       struct inode *old_dir, struct inode *new_dir);
39
40extern spinlock_t dentry_attach_lock;
41void ocfs2_dentry_attach_gen(struct dentry *dentry);
42
43#endif /* OCFS2_DCACHE_H */
44