linux-kernel - Re: [PATCH 2/2] staging: lustre: hide unused variable

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Date:   Thu, 1 Sep 2016 02:59:21 +0100 (BST)
From:   James Simmons <jsimmons@...radead.org>
To:     Arnd Bergmann <arnd@...db.de>
cc:     Oleg Drokin <oleg.drokin@...el.com>,
        Andreas Dilger <andreas.dilger@...el.com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "John L. Hammond" <john.hammond@...el.com>,
        lustre-devel@...ts.lustre.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] staging: lustre: hide unused variable


> After a code cleanup, we get a harmless warning about a variable
> that is unused when CONFIG_FS_POSIX_ACL is disabled:
> 
> drivers/staging/lustre/lustre/llite/xattr.c: In function 'll_xattr_get_common':
> drivers/staging/lustre/lustre/llite/xattr.c:312:24: error: unused variable 'lli' [-Werror=unused-variable]
> 
> This puts the variable declaration into the same #ifdef.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: 1e1f9ff406fd ("staging: lustre: llite: break ll_getxattr_common into 2 functions")

Reviewed-by: James Simmons <jsimmons@...radead.org>

> ---
>  drivers/staging/lustre/lustre/llite/xattr.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/staging/lustre/lustre/llite/xattr.c b/drivers/staging/lustre/lustre/llite/xattr.c
> index f252c26ec30f..7b8d4699a71a 100644
> --- a/drivers/staging/lustre/lustre/llite/xattr.c
> +++ b/drivers/staging/lustre/lustre/llite/xattr.c
> @@ -309,7 +309,9 @@ static int ll_xattr_get_common(const struct xattr_handler *handler,
>  {
>  	char fullname[strlen(handler->prefix) + strlen(name) + 1];
>  	struct ll_sb_info *sbi = ll_i2sbi(inode);
> +#ifdef CONFIG_FS_POSIX_ACL
>  	struct ll_inode_info *lli = ll_i2info(inode);
> +#endif
>  	int rc;
>  
>  	CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
> -- 
> 2.9.0
> 
>