You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
115 lines
2.8 KiB
115 lines
2.8 KiB
/*
|
|
* linux/fs/9p/vfs_dentry.c
|
|
*
|
|
* This file contians vfs dentry ops for the 9P2000 protocol.
|
|
*
|
|
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
|
|
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to:
|
|
* Free Software Foundation
|
|
* 51 Franklin Street, Fifth Floor
|
|
* Boston, MA 02111-1301 USA
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/file.h>
|
|
#include <linux/pagemap.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/string.h>
|
|
#include <linux/inet.h>
|
|
#include <linux/namei.h>
|
|
#include <linux/idr.h>
|
|
#include <linux/sched.h>
|
|
#include <net/9p/9p.h>
|
|
#include <net/9p/client.h>
|
|
|
|
#include "v9fs.h"
|
|
#include "v9fs_vfs.h"
|
|
#include "fid.h"
|
|
|
|
/**
|
|
* v9fs_dentry_delete - called when dentry refcount equals 0
|
|
* @dentry: dentry in question
|
|
*
|
|
* By returning 1 here we should remove cacheing of unused
|
|
* dentry components.
|
|
*
|
|
*/
|
|
|
|
static int v9fs_dentry_delete(struct dentry *dentry)
|
|
{
|
|
P9_DPRINTK(P9_DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_name.name,
|
|
dentry);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* v9fs_cached_dentry_delete - called when dentry refcount equals 0
|
|
* @dentry: dentry in question
|
|
*
|
|
* Only return 1 if our inode is invalid. Only non-synthetic files
|
|
* (ones without mtime == 0) should be calling this function.
|
|
*
|
|
*/
|
|
|
|
static int v9fs_cached_dentry_delete(struct dentry *dentry)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
P9_DPRINTK(P9_DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_name.name,
|
|
dentry);
|
|
|
|
if(!inode)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* v9fs_dentry_release - called when dentry is going to be freed
|
|
* @dentry: dentry that is being release
|
|
*
|
|
*/
|
|
|
|
void v9fs_dentry_release(struct dentry *dentry)
|
|
{
|
|
struct v9fs_dentry *dent;
|
|
struct p9_fid *temp, *current_fid;
|
|
|
|
P9_DPRINTK(P9_DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_name.name,
|
|
dentry);
|
|
dent = dentry->d_fsdata;
|
|
if (dent) {
|
|
list_for_each_entry_safe(current_fid, temp, &dent->fidlist,
|
|
dlist) {
|
|
p9_client_clunk(current_fid);
|
|
}
|
|
|
|
kfree(dent);
|
|
dentry->d_fsdata = NULL;
|
|
}
|
|
}
|
|
|
|
const struct dentry_operations v9fs_cached_dentry_operations = {
|
|
.d_delete = v9fs_cached_dentry_delete,
|
|
.d_release = v9fs_dentry_release,
|
|
};
|
|
|
|
const struct dentry_operations v9fs_dentry_operations = {
|
|
.d_delete = v9fs_dentry_delete,
|
|
.d_release = v9fs_dentry_release,
|
|
};
|
|
|