55f0d8205d
Al Viro made some suggestions to improve the implementation of commit
0633da48f0 ("fix autofs_sbi() does not check super block type").
The check is unnecessary in all cases except for ioctl usage so placing
the check in the super block accessor function adds a small overhead to
the common case where it isn't needed.
So it's sufficient to do this in the ioctl code only.
Also the check in the ioctl code is needlessly complex.
[akpm@linux-foundation.org: declare autofs_fs_type in .h, not .c]
Link: http://lkml.kernel.org/r/154296970987.9889.1597442413573683096.stgit@pluto-themaw-net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
/*
|
|
* Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
|
|
*
|
|
* This file is part of the Linux kernel and is made available under
|
|
* the terms of the GNU General Public License, version 2, or at your
|
|
* option, any later version, incorporated herein by reference.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include "autofs_i.h"
|
|
|
|
static struct dentry *autofs_mount(struct file_system_type *fs_type,
|
|
int flags, const char *dev_name, void *data)
|
|
{
|
|
return mount_nodev(fs_type, flags, data, autofs_fill_super);
|
|
}
|
|
|
|
struct file_system_type autofs_fs_type = {
|
|
.owner = THIS_MODULE,
|
|
.name = "autofs",
|
|
.mount = autofs_mount,
|
|
.kill_sb = autofs_kill_sb,
|
|
};
|
|
MODULE_ALIAS_FS("autofs");
|
|
MODULE_ALIAS("autofs");
|
|
|
|
static int __init init_autofs_fs(void)
|
|
{
|
|
int err;
|
|
|
|
autofs_dev_ioctl_init();
|
|
|
|
err = register_filesystem(&autofs_fs_type);
|
|
if (err)
|
|
autofs_dev_ioctl_exit();
|
|
|
|
return err;
|
|
}
|
|
|
|
static void __exit exit_autofs_fs(void)
|
|
{
|
|
autofs_dev_ioctl_exit();
|
|
unregister_filesystem(&autofs_fs_type);
|
|
}
|
|
|
|
module_init(init_autofs_fs)
|
|
module_exit(exit_autofs_fs)
|
|
MODULE_LICENSE("GPL");
|