linux-kernel - Re: [RFC v2 2/2] kernel/sysctl: support handling command line aliases

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Message-ID: <20200325142936.GC19542@dhcp22.suse.cz>
Date:   Wed, 25 Mar 2020 15:29:36 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Vlastimil Babka <vbabka@...e.cz>
Cc:     Luis Chamberlain <mcgrof@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Iurii Zaikin <yzaikin@...gle.com>,
        linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
        linux-mm@...ck.org, Ivan Teterevkov <ivan.teterevkov@...anix.com>,
        David Rientjes <rientjes@...gle.com>,
        Matthew Wilcox <willy@...radead.org>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        "Guilherme G . Piccoli" <gpiccoli@...onical.com>
Subject: Re: [RFC v2 2/2] kernel/sysctl: support handling command line aliases

Both patches look really great to me. I haven't really checked all the
details but from a quick glance they both seem ok.

I would just add a small clarification here. Unless I am mistaken
early_param is called earlier than it would be now. But that shouldn't
cause any problems because the underlying implementation is just a noop
for backward compatibility.

Thanks a lot this looks like a very nice improvement.

On Wed 25-03-20 13:03:45, Vlastimil Babka wrote:
[...]
> -static __init int setup_numa_zonelist_order(char *s)
> -{
> -	if (!s)
> -		return 0;
> -
> -	return __parse_numa_zonelist_order(s);
> -}
> -early_param("numa_zonelist_order", setup_numa_zonelist_order);
> -
>  char numa_zonelist_order[] = "Node";
>  
>  /*
> -- 
> 2.25.1

-- 
Michal Hocko
SUSE Labs