Merge tag 'v3.6-rc4'
[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / nfs / sysctl.c
1 /*
2  * linux/fs/nfs/sysctl.c
3  *
4  * Sysctl interface to NFS parameters
5  */
6 #include <linux/types.h>
7 #include <linux/linkage.h>
8 #include <linux/ctype.h>
9 #include <linux/fs.h>
10 #include <linux/sysctl.h>
11 #include <linux/module.h>
12 #include <linux/nfs_fs.h>
13
14 static struct ctl_table_header *nfs_callback_sysctl_table;
15
16 static ctl_table nfs_cb_sysctls[] = {
17         {
18                 .procname       = "nfs_mountpoint_timeout",
19                 .data           = &nfs_mountpoint_expiry_timeout,
20                 .maxlen         = sizeof(nfs_mountpoint_expiry_timeout),
21                 .mode           = 0644,
22                 .proc_handler   = proc_dointvec_jiffies,
23         },
24         {
25                 .procname       = "nfs_congestion_kb",
26                 .data           = &nfs_congestion_kb,
27                 .maxlen         = sizeof(nfs_congestion_kb),
28                 .mode           = 0644,
29                 .proc_handler   = proc_dointvec,
30         },
31         { }
32 };
33
34 static ctl_table nfs_cb_sysctl_dir[] = {
35         {
36                 .procname = "nfs",
37                 .mode = 0555,
38                 .child = nfs_cb_sysctls,
39         },
40         { }
41 };
42
43 static ctl_table nfs_cb_sysctl_root[] = {
44         {
45                 .procname = "fs",
46                 .mode = 0555,
47                 .child = nfs_cb_sysctl_dir,
48         },
49         { }
50 };
51
52 int nfs_register_sysctl(void)
53 {
54         nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root);
55         if (nfs_callback_sysctl_table == NULL)
56                 return -ENOMEM;
57         return 0;
58 }
59
60 void nfs_unregister_sysctl(void)
61 {
62         unregister_sysctl_table(nfs_callback_sysctl_table);
63         nfs_callback_sysctl_table = NULL;
64 }