]> git.proxmox.com Git - mirror_zfs-debian.git/blame - include/linux/dcache_compat.h
Fix false ENOENT on snapshot control dentries
[mirror_zfs-debian.git] / include / linux / dcache_compat.h
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8299a1f4
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1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (C) 2011 Lawrence Livermore National Security, LLC.
24 */
25
26#ifndef _ZFS_DCACHE_H
27#define _ZFS_DCACHE_H
28
29#include <linux/dcache.h>
30
31#define dname(dentry) ((char *)((dentry)->d_name.name))
ebe7e575 32#define dlen(dentry) ((int)((dentry)->d_name.len))
8299a1f4 33
6a0936ba
RY
34#ifndef HAVE_D_MAKE_ROOT
35#define d_make_root(inode) d_alloc_root(inode)
36#endif /* HAVE_D_MAKE_ROOT */
37
f1a05fa1
NB
38/*
39 * 2.6.30 API change,
40 * The const keyword was added to the 'struct dentry_operations' in
41 * the dentry structure. To handle this we define an appropriate
42 * dentry_operations_t typedef which can be used.
43 */
44#ifdef HAVE_CONST_DENTRY_OPERATIONS
45typedef const struct dentry_operations dentry_operations_t;
46#else
47typedef struct dentry_operations dentry_operations_t;
48#endif
49
50/*
51 * 2.6.38 API change,
52 * Added d_set_d_op() helper function which sets some flags in
53 * dentry->d_flags based on which operations are defined.
54 */
55#ifndef HAVE_D_SET_D_OP
56static inline void
57d_set_d_op(struct dentry *dentry, dentry_operations_t *op)
58{
59 dentry->d_op = op;
60}
61#endif /* HAVE_D_SET_D_OP */
62
8299a1f4 63#endif /* _ZFS_DCACHE_H */