[PATCH] knfsd: lockd: optionally use hostnames for identifying peers

[firefly-linux-kernel-4.4.55.git] / fs / lockd / svc.c

diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 3cc369e5693f2d9af1c34e605c1ba2c615a21eae..a3b7602cd3830f52675f66fc51da42ddfe3fd2e8 100644 (file)
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -61,6 +61,7 @@ static DECLARE_WAIT_QUEUE_HEAD(lockd_exit);
 static unsigned long           nlm_grace_period;
 static unsigned long           nlm_timeout = LOCKD_DFLT_TIMEO;
 static int                     nlm_udpport, nlm_tcpport;
+int                            nsm_use_hostnames = 0;
 
 /*
  * Constants needed for the sysctl interface.
@@ -395,6 +396,14 @@ static ctl_table nlm_sysctls[] = {
                .extra1         = (int *) &nlm_port_min,
                .extra2         = (int *) &nlm_port_max,
        },
+       {
+               .ctl_name       = CTL_UNNUMBERED,
+               .procname       = "nsm_use_hostnames",
+               .data           = &nsm_use_hostnames,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec,
+       },
        { .ctl_name = 0 }
 };
 
@@ -483,6 +492,7 @@ module_param_call(nlm_udpport, param_set_port, param_get_int,
                  &nlm_udpport, 0644);
 module_param_call(nlm_tcpport, param_set_port, param_get_int,
                  &nlm_tcpport, 0644);
+module_param(nsm_use_hostnames, bool, 0644);
 
 /*
  * Initialising and terminating the module.