linux-kernel - Re: [PATCH 15/20] staging: lustre: llite: mark expected switch fall-through

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Date:   Tue, 17 Oct 2017 23:00:02 +0000
From:   "Dilger, Andreas" <andreas.dilger@...el.com>
To:     "Gustavo A. R. Silva" <garsilva@...eddedor.com>
CC:     "Drokin, Oleg" <oleg.drokin@...el.com>,
        James Simmons <jsimmons@...radead.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "lustre-devel@...ts.lustre.org" <lustre-devel@...ts.lustre.org>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 15/20] staging: lustre: llite: mark expected switch
 fall-through


> On Oct 12, 2017, at 10:17, Gustavo A. R. Silva <garsilva@...eddedor.com> wrote:
> 
> In preparation to enabling -Wimplicit-fallthrough, mark switch cases
> where we are expecting to fall through.
> 
> Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>

Not sure why you moved the "for mode = 0" comment to a separate line?
Not the end of the world though.

Reviewed-by: Andreas Dilger <andreas.dilger@...el.com>

> ---
> drivers/staging/lustre/lustre/llite/namei.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/lustre/lustre/llite/namei.c b/drivers/staging/lustre/lustre/llite/namei.c
> index 5cc2b32..55e0d03 100644
> --- a/drivers/staging/lustre/lustre/llite/namei.c
> +++ b/drivers/staging/lustre/lustre/llite/namei.c
> @@ -949,7 +949,9 @@ static int ll_mknod(struct inode *dir, struct dentry *dchild,
> 
> 	switch (mode & S_IFMT) {
> 	case 0:
> -		mode |= S_IFREG; /* for mode = 0 case, fallthrough */
> +		mode |= S_IFREG;
> +		/* for mode = 0 case */
> +		/* fall through */
> 	case S_IFREG:
> 	case S_IFCHR:
> 	case S_IFBLK:
> -- 
> 2.7.4
> 

Cheers, Andreas
--
Andreas Dilger
Lustre Principal Architect
Intel Corporation