1/* -*- mode: c; c-basic-offset: 8; -*-
 2 * vim: noexpandtab sw=8 ts=8 sts=0:
 3 *
 4 * dcache.h
 5 *
 6 * Function prototypes
 7 *
 8 * Copyright (C) 2002, 2004 Oracle.  All rights reserved.
 9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
24 */
25
26#ifndef OCFS2_DCACHE_H
27#define OCFS2_DCACHE_H
28
29extern const struct dentry_operations ocfs2_dentry_ops;
30
31struct ocfs2_dentry_lock {
32	/* Use count of dentry lock */
33	unsigned int		dl_count;
34	union {
35		/* Linked list of dentry locks to release */
36		struct ocfs2_dentry_lock *dl_next;
37		u64			dl_parent_blkno;
38	};
39
40	/*
41	 * The ocfs2_dentry_lock keeps an inode reference until
42	 * dl_lockres has been destroyed. This is usually done in
43	 * ->d_iput() anyway, so there should be minimal impact.
44	 */
45	struct inode		*dl_inode;
46	struct ocfs2_lock_res	dl_lockres;
47};
48
49int ocfs2_dentry_attach_lock(struct dentry *dentry, struct inode *inode,
50			     u64 parent_blkno);
51
52extern spinlock_t dentry_list_lock;
53
54void ocfs2_dentry_lock_put(struct ocfs2_super *osb,
55			   struct ocfs2_dentry_lock *dl);
56
57void ocfs2_drop_dl_inodes(struct work_struct *work);
58void ocfs2_drop_all_dl_inodes(struct ocfs2_super *osb);
59
60struct dentry *ocfs2_find_local_alias(struct inode *inode, u64 parent_blkno,
61				      int skip_unhashed);
62
63void ocfs2_dentry_move(struct dentry *dentry, struct dentry *target,
64		       struct inode *old_dir, struct inode *new_dir);
65
66extern spinlock_t dentry_attach_lock;
67void ocfs2_dentry_attach_gen(struct dentry *dentry);
68
69#endif /* OCFS2_DCACHE_H */

 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 */