linux-kernel - Re: Kernel size increase of +256 KiB (was: Re: RPCSEC_GSS: Share all credential caches on a per-transport basis)

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Date:	Fri, 13 Sep 2013 08:23:54 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	"Myklebust, Trond" <Trond.Myklebust@...app.com>
Cc:	"Linux/m68k" <linux-m68k@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Kernel size increase of +256 KiB (was: Re: RPCSEC_GSS: Share all
 credential caches on a per-transport basis)

On Thu, Sep 12, 2013 at 10:17 PM, Myklebust, Trond
<Trond.Myklebust@...app.com> wrote:
>> Only for the modular case. What about builtin, e.g. for nfsroot?
>>
>> Or is it better to not build in NFS_V4 support in that case?
>>
>> config NFS_V4
>>           If unsure, say Y.
>>
>> config NFSD_V4
>>           If unsure, say N.
>>
>> So that's why my defconfig has NFS_V4 but not NFSD_V4.
>
> It should be possible now to compile in NFSv3 support (and/or NFSv2),
> while keeping NFSv4 a module. That will usually result in
> CONFIG_SUNRPC_GSS=m...

Indeed. Making NFS_V4 modular saves 102 KiB, i.e. 2.5% of a typical
almost-4-MiB kernel image!

> Of course, if your defconfig doesn't have module support then, yes, your
> only option to avoid compiling in rpcsec_gss is to not select NFSv4 at
> all.

It has. But it needs everything to boot (block, net, nfs) as built-in.

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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