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.
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.
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]
23 * Copyright (C) 2011 Lawrence Livermore National Security, LLC.
29 #include <linux/dcache.h>
31 #define dname(dentry) ((char *)((dentry)->d_name.name))
32 #define dlen(dentry) ((int)((dentry)->d_name.len))
34 #ifndef HAVE_D_MAKE_ROOT
35 #define d_make_root(inode) d_alloc_root(inode)
36 #endif /* HAVE_D_MAKE_ROOT */
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.
44 #ifdef HAVE_CONST_DENTRY_OPERATIONS
45 typedef const struct dentry_operations dentry_operations_t
;
47 typedef struct dentry_operations dentry_operations_t
;
52 * Added d_set_d_op() helper function which sets some flags in
53 * dentry->d_flags based on which operations are defined.
55 #ifndef HAVE_D_SET_D_OP
57 d_set_d_op(struct dentry
*dentry
, dentry_operations_t
*op
)
61 #endif /* HAVE_D_SET_D_OP */
64 * 2.6.38 API addition,
65 * Added d_clear_d_op() helper function which clears some flags and the
66 * registered dentry->d_op table. This is required because d_set_d_op()
67 * issues a warning when the dentry operations table is already set.
68 * For the .zfs control directory to work properly we must be able to
69 * override the default operations table and register custom .d_automount
70 * and .d_revalidate callbacks.
73 d_clear_d_op(struct dentry
*dentry
)
75 #ifdef HAVE_D_SET_D_OP
78 ~(DCACHE_OP_HASH
| DCACHE_OP_COMPARE
|
79 DCACHE_OP_REVALIDATE
| DCACHE_OP_DELETE
);
80 #endif /* HAVE_D_SET_D_OP */
83 #endif /* _ZFS_DCACHE_H */