linux-kernel - Re: [PATCH] Use existing helper to convert "on/off" to boolean

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Date:	Fri, 29 Apr 2016 11:21:45 +0200
From:	Michal Hocko <mhocko@...nel.org>
To:	Minfei Huang <mnghuan@...il.com>
Cc:	akpm@...ux-foundation.org, labbott@...oraproject.org,
	rjw@...ysocki.net, mgorman@...hsingularity.net, vbabka@...e.cz,
	rientjes@...gle.com, kirill.shutemov@...ux.intel.com,
	iamjoonsoo.kim@....com, izumi.taku@...fujitsu.com,
	alexander.h.duyck@...hat.com, hannes@...xchg.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Use existing helper to convert "on/off" to boolean

On Fri 29-04-16 17:07:42, Minfei Huang wrote:
> On 04/29/16 at 10:04P, Michal Hocko wrote:
> > On Fri 29-04-16 13:47:04, Minfei Huang wrote:
> > > It's more convenient to use existing function helper to convert string
> > > "on/off" to boolean.
> > 
> > But kstrtobool in linux-next only does "This routine returns 0 iff the
> > first character is one of 'Yy1Nn0'" so it doesn't know about on/off.
> > Or am I missing anything?
> 
> Hi, Michal.
> 
> Thanks for your reply.
> 
> Following is the kstrtobool comment from linus tree, which has explained
> that this function can parse "on"/"off" string. Also Kees Cook has
> posted such patch to fix this issue as well. So I think it's safe to fix
> it.

OK, I was looking at wrong tree and missed a81a5a17d44b ("lib: add
"on"/"off" support to kstrtobool")

Sorry about the confusion. Feel free to add
Acked-by: Michal Hocko <mhocko@...e.com>
-- 
Michal Hocko
SUSE Labs