}
EXPORT_SYMBOL(sock_kmalloc);
-/*
- * Free an option memory block.
+/* Free an option memory block. Note, we actually want the inline
+ * here as this allows gcc to detect the nullify and fold away the
+ * condition entirely.
*/
-void sock_kfree_s(struct sock *sk, void *mem, int size)
+static inline void __sock_kfree_s(struct sock *sk, void *mem, int size,
+ const bool nullify)
{
if (WARN_ON_ONCE(!mem))
return;
- kfree(mem);
+ if (nullify)
+ kzfree(mem);
+ else
+ kfree(mem);
atomic_sub(size, &sk->sk_omem_alloc);
}
+
+void sock_kfree_s(struct sock *sk, void *mem, int size)
+{
+ __sock_kfree_s(sk, mem, size, false);
+}
EXPORT_SYMBOL(sock_kfree_s);
+void sock_kzfree_s(struct sock *sk, void *mem, int size)
+{
+ __sock_kfree_s(sk, mem, size, true);
+}
+EXPORT_SYMBOL(sock_kzfree_s);
+
/* It is almost wait_for_tcp_memory minus release_sock/lock_sock.
I think, these locks should be removed for datagram sockets.
*/