KEYS: Fix keyring content gc scanner

[platform/adaptation/renesas_rcar/renesas_kernel.git] / security / keys / gc.c

diff --git a/security/keys/gc.c b/security/keys/gc.c
index d67c97b..d3222b6 100644 (file)
--- a/security/keys/gc.c
+++ b/security/keys/gc.c
@@ -131,50 +131,6 @@ void key_gc_keytype(struct key_type *ktype)
 }
 
 /*
- * Garbage collect pointers from a keyring.
- *
- * Not called with any locks held.  The keyring's key struct will not be
- * deallocated under us as only our caller may deallocate it.
- */
-static void key_gc_keyring(struct key *keyring, time_t limit)
-{
-       struct keyring_list *klist;
-       int loop;
-
-       kenter("%x", key_serial(keyring));
-
-       if (keyring->flags & ((1 << KEY_FLAG_INVALIDATED) |
-                             (1 << KEY_FLAG_REVOKED)))
-               goto dont_gc;
-
-       /* scan the keyring looking for dead keys */
-       rcu_read_lock();
-       klist = rcu_dereference(keyring->payload.subscriptions);
-       if (!klist)
-               goto unlock_dont_gc;
-
-       loop = klist->nkeys;
-       smp_rmb();
-       for (loop--; loop >= 0; loop--) {
-               struct key *key = rcu_dereference(klist->keys[loop]);
-               if (key_is_dead(key, limit))
-                       goto do_gc;
-       }
-
-unlock_dont_gc:
-       rcu_read_unlock();
-dont_gc:
-       kleave(" [no gc]");
-       return;
-
-do_gc:
-       rcu_read_unlock();
-
-       keyring_gc(keyring, limit);
-       kleave(" [gc]");
-}
-
-/*
  * Garbage collect a list of unreferenced, detached keys
  */
 static noinline void key_gc_unused_keys(struct list_head *keys)
@@ -392,8 +348,7 @@ found_unreferenced_key:
         */
 found_keyring:
        spin_unlock(&key_serial_lock);
-       kdebug("scan keyring %d", key->serial);
-       key_gc_keyring(key, limit);
+       keyring_gc(key, limit);
        goto maybe_resched;
 
        /* We found a dead key that is still referenced.  Reset its type and