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
13 extern const struct dentry_operations ocfs2_dentry_ops;
14
15 struct 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
28 int ocfs2_dentry_attach_lock(struct dentry *dentry, struct inode *inode,
29 u64 parent_blkno);
30
31 void ocfs2_dentry_lock_put(struct ocfs2_super *osb,
32 struct ocfs2_dentry_lock *dl);
33
34 struct dentry *ocfs2_find_local_alias(struct inode *inode, u64 parent_blkno,
35 int skip_unhashed);
36
37 void ocfs2_dentry_move(struct dentry *dentry, struct dentry *target,
38 struct inode *old_dir, struct inode *new_dir);
39
40 extern spinlock_t dentry_attach_lock;
41 void ocfs2_dentry_attach_gen(struct dentry *dentry);
42
43 #endif /* OCFS2_DCACHE_H */
44
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