linux-kernel - Re: [PATCH 1/3] livepatch: introduce shadow variable API

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Message-ID: <alpine.LSU.2.20.1706191805340.5419@pobox.suse.cz>
Date:   Mon, 19 Jun 2017 18:09:58 +0200 (CEST)
From:   Miroslav Benes <mbenes@...e.cz>
To:     Petr Mladek <pmladek@...e.com>
cc:     Joe Lawrence <joe.lawrence@...hat.com>,
        live-patching@...r.kernel.org, linux-kernel@...r.kernel.org,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Jessica Yu <jeyu@...hat.com>, Jiri Kosina <jikos@...nel.org>
Subject: Re: [PATCH 1/3] livepatch: introduce shadow variable API


> > +struct klp_shadow {
> > +	struct hlist_node node;
> > +	struct rcu_head rcu_head;
> > +	void *obj;
> > +	char *var;
> > +	void *data;
> 
> I would make the meaning more obvious. What about renaming?
> 
>   var -> key or id
>   data -> shadow_obj or new_obj

But var is not a key to a hash table. obj is. Renaming obj to key would be 
misleading in my opinion, because it IS a pointer to an object. And data 
is ok too, as far as I'm concerned. Just saying.

But yes, I'd welcome a description too.

Miroslav