Re: [PATCH v14 08/11] livepatch: Remove Nop structures when unused

From: Josh Poimboeuf
Date: Thu Dec 13 2018 - 18:00:53 EST


On Thu, Nov 29, 2018 at 10:44:28AM +0100, Petr Mladek wrote:
> +static void __klp_free_funcs(struct klp_object *obj, bool free_all)
> {
> - struct klp_func *func;
> + struct klp_func *func, *tmp_func;
> +
> + klp_for_each_func_safe(obj, func, tmp_func) {
> + if (!free_all && !func->nop)
> + continue;

I suspect that changing 'free_all" to 'nops_only' (and inverting the
condition) would make the code more readable.

And a similar suggestion for __klp_free_objects().

> +
> + /*
> + * Avoid double free. It would be tricky to wait for kobject
> + * callbacks when only NOPs are handled.
> + */
> + list_del(&func->node);

I've read this comment several times but I still have no idea how it
relates to the code :-)

And a similar comment for __klp_free_objects().

--
Josh