1 files changed, 11 insertions, 0 deletions

diff --git a/security/keys/sysctl.c b/security/keys/sysctl.c
index ee32d181764a..8c0af08760c8 100644
--- a/security/keys/sysctl.c
+++ b/security/keys/sysctl.c
@@ -61,5 +61,16 @@ ctl_table key_sysctls[] = {
                 .extra1 = (void *) &zero,
                 .extra2 = (void *) &max,
         },
+#ifdef CONFIG_PERSISTENT_KEYRINGS
+        {
+                .procname = "persistent_keyring_expiry",
+                .data = &persistent_keyring_expiry,
+                .maxlen = sizeof(unsigned),
+                .mode = 0644,
+                .proc_handler = proc_dointvec_minmax,
+                .extra1 = (void *) &zero,
+                .extra2 = (void *) &max,
+        },
+#endif
         { }
 };