2 * linux/fs/9p/vfs_dentry.c
4 * This file contians vfs dentry ops for the 9P2000 protocol.
6 * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
7 * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2
11 * as published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to:
20 * Free Software Foundation
21 * 51 Franklin Street, Fifth Floor
22 * Boston, MA 02111-1301 USA
26 #include <linux/module.h>
27 #include <linux/errno.h>
29 #include <linux/file.h>
30 #include <linux/pagemap.h>
31 #include <linux/stat.h>
32 #include <linux/string.h>
33 #include <linux/smp_lock.h>
34 #include <linux/inet.h>
35 #include <linux/namei.h>
36 #include <linux/idr.h>
45 * v9fs_dentry_delete - called when dentry refcount equals 0
46 * @dentry: dentry in question
48 * By returning 1 here we should remove cacheing of unused
53 static int v9fs_dentry_delete(struct dentry *dentry)
55 dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
61 * v9fs_cached_dentry_delete - called when dentry refcount equals 0
62 * @dentry: dentry in question
64 * Only return 1 if our inode is invalid. Only non-synthetic files
65 * (ones without mtime == 0) should be calling this function.
69 static int v9fs_cached_dentry_delete(struct dentry *dentry)
71 struct inode *inode = dentry->d_inode;
72 dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
81 * v9fs_dentry_release - called when dentry is going to be freed
82 * @dentry: dentry that is being release
86 void v9fs_dentry_release(struct dentry *dentry)
90 dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
92 if (dentry->d_fsdata != NULL) {
93 struct list_head *fid_list = dentry->d_fsdata;
94 struct v9fs_fid *temp = NULL;
95 struct v9fs_fid *current_fid = NULL;
97 list_for_each_entry_safe(current_fid, temp, fid_list, list) {
98 err = v9fs_t_clunk(current_fid->v9ses, current_fid->fid);
101 dprintk(DEBUG_ERROR, "clunk failed: %d name %s\n",
102 err, dentry->d_iname);
104 v9fs_fid_destroy(current_fid);
107 kfree(dentry->d_fsdata); /* free the list_head */
111 struct dentry_operations v9fs_cached_dentry_operations = {
112 .d_delete = v9fs_cached_dentry_delete,
113 .d_release = v9fs_dentry_release,
116 struct dentry_operations v9fs_dentry_operations = {
117 .d_delete = v9fs_dentry_delete,
118 .d_release = v9fs_dentry_release,