binder: use of hlist_count_nodes()

Make use of the newly added hlist_count_nodes().

Link: https://lkml.kernel.org/r/20240104164937.424320-3-pierre.gondois@arm.comSigned-off-by: Pierre Gondois <pierre.gondois@arm.com>
Acked-by: Carlos Llamas <cmllamas@google.com>
Acked-by: Marco Elver <elver@google.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Coly Li <colyli@suse.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Cc: Martijn Coenen <maco@android.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Todd Kjos <tkjos@android.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

drivers/android/binder.c

@@ -6086,9 +6086,7 @@ static void print_binder_node_nilocked(struct seq_file *m,
 	struct binder_work *w;
 	int count;
 
-	count = 0;
-	hlist_for_each_entry(ref, &node->refs, node_entry)
-		count++;
+	count = hlist_count_nodes(&node->refs);
 
 	seq_printf(m, "  node %d: u%016llx c%016llx hs %d hw %d ls %d lw %d is %d iw %d tr %d",
 		   node->debug_id, (u64)node->ptr, (u64)node->cookie,