1// SPDX-License-Identifier: GPL-2.0
2/*
3 * linux/fs/nfs/sysctl.c
4 *
5 * Sysctl interface to NFS parameters
6 */
7#include <linux/types.h>
8#include <linux/linkage.h>
9#include <linux/ctype.h>
10#include <linux/fs.h>
11#include <linux/sysctl.h>
12#include <linux/module.h>
13#include <linux/nfs_fs.h>
14
15static struct ctl_table_header *nfs_callback_sysctl_table;
16
17static struct ctl_table nfs_cb_sysctls[] = {
18 {
19 .procname = "nfs_mountpoint_timeout",
20 .data = &nfs_mountpoint_expiry_timeout,
21 .maxlen = sizeof(nfs_mountpoint_expiry_timeout),
22 .mode = 0644,
23 .proc_handler = proc_dointvec_jiffies,
24 },
25 {
26 .procname = "nfs_congestion_kb",
27 .data = &nfs_congestion_kb,
28 .maxlen = sizeof(nfs_congestion_kb),
29 .mode = 0644,
30 .proc_handler = proc_dointvec,
31 },
32 { }
33};
34
35int nfs_register_sysctl(void)
36{
37 nfs_callback_sysctl_table = register_sysctl("fs/nfs", nfs_cb_sysctls);
38 if (nfs_callback_sysctl_table == NULL)
39 return -ENOMEM;
40 return 0;
41}
42
43void nfs_unregister_sysctl(void)
44{
45 unregister_sysctl_table(table: nfs_callback_sysctl_table);
46 nfs_callback_sysctl_table = NULL;
47}
48

source code of linux/fs/nfs/sysctl.c