KEYS: Move the unreferenced key reaper to the keys garbage collector file

Move the unreferenced key reaper function to the keys garbage collector file
as that's a more appropriate place with the dead key link reaper.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/keys/internal.h b/security/keys/internal.h
index f375152..a7cd1a6 100644
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -75,6 +75,7 @@
 #define KEYQUOTA_LINK_BYTES	4		/* a link in a keyring is worth 4 bytes */
 
 
+extern struct kmem_cache *key_jar;
 extern struct rb_root key_serial_tree;
 extern spinlock_t key_serial_lock;
 extern struct mutex key_construction_mutex;
@@ -146,6 +147,7 @@
 
 extern long join_session_keyring(const char *name);
 
+extern struct work_struct key_gc_unused_work;
 extern unsigned key_gc_delay;
 extern void keyring_gc(struct key *keyring, time_t limit);
 extern void key_schedule_gc(time_t expiry_at);