Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * linux/fs/nfs/sysctl.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Sysctl interface to NFS parameters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/sysctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/nfs_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static struct ctl_table_header *nfs_callback_sysctl_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static struct ctl_table nfs_cb_sysctls[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 		.procname	= "nfs_mountpoint_timeout",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		.data		= &nfs_mountpoint_expiry_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		.maxlen		= sizeof(nfs_mountpoint_expiry_timeout),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		.mode		= 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		.proc_handler	= proc_dointvec_jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		.procname	= "nfs_congestion_kb",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		.data		= &nfs_congestion_kb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		.maxlen		= sizeof(nfs_congestion_kb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		.mode		= 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		.proc_handler	= proc_dointvec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static struct ctl_table nfs_cb_sysctl_dir[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		.procname = "nfs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		.mode = 0555,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		.child = nfs_cb_sysctls,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static struct ctl_table nfs_cb_sysctl_root[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		.procname = "fs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		.mode = 0555,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 		.child = nfs_cb_sysctl_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) int nfs_register_sysctl(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	if (nfs_callback_sysctl_table == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) void nfs_unregister_sysctl(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	unregister_sysctl_table(nfs_callback_sysctl_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	nfs_callback_sysctl_table = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }