KEYS: Define a __key_get() wrapper to use rather than atomic_inc()

Define a __key_get() wrapper to use rather than atomic_inc() on the key usage
count as this makes it easier to hook in refcount error debugging.

Signed-off-by: David Howells <dhowells@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index b42f2d4f7f83..87eff32b53f4 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -479,7 +479,7 @@ not_this_keyring:
 
         /* we found a viable match */
 found:
-        atomic_inc(&key->usage);
+        __key_get(key);
         key->last_used_at = ctx->now.tv_sec;
         keyring->last_used_at = ctx->now.tv_sec;
         while (sp > 0)
@@ -573,7 +573,7 @@ key_ref_t __keyring_search_one(key_ref_t keyring_ref,
         return ERR_PTR(-ENOKEY);
 
 found:
-        atomic_inc(&key->usage);
+        __key_get(key);
         keyring->last_used_at = key->last_used_at =
                 current_kernel_time().tv_sec;
         rcu_read_unlock();
@@ -909,7 +909,7 @@ void __key_link(struct key *keyring, struct key *key,
 
         klist = rcu_dereference_locked_keyring(keyring);
 
-        atomic_inc(&key->usage);
+        __key_get(key);
         keyring->last_used_at = key->last_used_at =
                 current_kernel_time().tv_sec;