linux-kernel - Re: [PATCH 1/2] scatterlist: add sg

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Message-ID: <CAMuHMdU1MRhgbqzgTGbJgK15=_BR3aE18UO_JpC_FtseJ9qM1A@mail.gmail.com>
Date:	Thu, 11 Oct 2012 12:28:57 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Maxim Levitsky <maximlevitsky@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Alex Dubov <oakad@...oo.com>, linux-kernel@...r.kernel.org,
	Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH 1/2] scatterlist: add sg_nents

On Thu, Oct 11, 2012 at 12:27 PM, Geert Uytterhoeven
<geert@...ux-m68k.org> wrote:
> On Wed, Sep 26, 2012 at 11:49 AM, Maxim Levitsky
> <maximlevitsky@...il.com> wrote:
>> +int sg_nents(struct scatterlist *sg)
>
> unsigned int?

and "const struct scatterlist *sg"? Ah no, that won't work as
sg_next() treats non-const pointers :-(

>> +{
>> +       int nents = 0;
>> +       while (sg) {
>> +               nents++;
>> +               sg = sg_next(sg);
>> +       }
>> +
>> +       return nents;
>> +}

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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