// SPDX-License-Identifier: GPL-2.0/* * linux/fs/nfs/sysctl.c * * Sysctl interface to NFS parameters */#include <linux/types.h>#include <linux/linkage.h>#include <linux/ctype.h>#include <linux/fs.h>#include <linux/sysctl.h>#include <linux/module.h>#include <linux/nfs_fs.h> static struct ctl_table_header *nfs_callback_sysctl_table; static const struct ctl_table nfs_cb_sysctls[] = {	{		.procname	= "nfs_mountpoint_timeout",		.data		= &nfs_mountpoint_expiry_timeout,		.maxlen		= sizeof(nfs_mountpoint_expiry_timeout),		.mode		= 0644,		.proc_handler	= proc_dointvec_jiffies,	},	{		.procname	= "nfs_congestion_kb",		.data		= &nfs_congestion_kb,		.maxlen		= sizeof(nfs_congestion_kb),		.mode		= 0644,		.proc_handler	= proc_dointvec,	},}; int nfs_register_sysctl(void){	nfs_callback_sysctl_table = register_sysctl("fs/nfs", nfs_cb_sysctls);	if (nfs_callback_sysctl_table == NULL)		return -ENOMEM;	return 0;} void nfs_unregister_sysctl(void){	unregister_sysctl_table(nfs_callback_sysctl_table);	nfs_callback_sysctl_table = NULL;}