linux-kernel - Re: [PATCH] NFSD: hide unused svcxdr

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Date:   Mon, 22 Jan 2018 12:26:20 -0500
From:   "J. Bruce Fields" <bfields@...ldses.org>
To:     Rasmus Villemoes <rasmus.villemoes@...vas.dk>
Cc:     Arnd Bergmann <arnd@...db.de>, Jeff Layton <jlayton@...nel.org>,
        Chuck Lever <chuck.lever@...cle.com>,
        Trond Myklebust <trond.myklebust@...marydata.com>,
        Kinglong Mee <kinglongmee@...il.com>,
        linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] NFSD: hide unused svcxdr_dupstr()

On Fri, Jan 19, 2018 at 10:58:27PM +0100, Rasmus Villemoes wrote:
> On 2018-01-19 15:54, Arnd Bergmann wrote:
> > There is now only one caller left for svcxdr_dupstr() and this is inside
> > of an #ifdef, so we can get a warning when the option is disabled:
> > 
> > fs/nfsd/nfs4xdr.c:241:1: error: 'svcxdr_dupstr' defined but not used [-Werror=unused-function]
> > 
> > This adds another #ifdef around the definition.
> 
> Why not instead do
> 
> -#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
> -       if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
> +       if (IS_ENABLED(CONFIG_NFSD_V4_SECURITY_LABEL) && bmval[2] &
> FATTR4_WORD2_SECURITY_LABEL)
> 
> (sorry for whitespace damage, not a real patch).

That'd be OK with me too.

--b.