linux-kernel - Re: [PATCH 077/141] dm raid: Fix fall-through warnings for Clang

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Message-ID: <20210420221322.GA16676@redhat.com>
Date:   Tue, 20 Apr 2021 18:13:23 -0400
From:   Mike Snitzer <snitzer@...hat.com>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Alasdair Kergon <agk@...hat.com>, dm-devel@...hat.com,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH 077/141] dm raid: Fix fall-through warnings for Clang

On Tue, Apr 20 2021 at  4:15pm -0400,
Gustavo A. R. Silva <gustavo@...eddedor.com> wrote:

> Hi all,
> 
> Friendly ping: who can take this, please?
> 
> Thanks
> --
> Gustavo
> 
> On 11/20/20 12:35, Gustavo A. R. Silva wrote:
> > In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
> > by explicitly adding a break statement instead of letting the code fall
> > through to the next case.
> > 
> > Link: https://github.com/KSPP/linux/issues/115
> > Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
> > ---
> >  drivers/md/dm-raid.c | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
> > index 9c1f7c4de65b..e98af0b9d00c 100644
> > --- a/drivers/md/dm-raid.c
> > +++ b/drivers/md/dm-raid.c
> > @@ -1854,6 +1854,7 @@ static int rs_check_takeover(struct raid_set *rs)
> >  		    ((mddev->layout == ALGORITHM_PARITY_N && mddev->new_layout == ALGORITHM_PARITY_N) ||
> >  		     __within_range(mddev->new_layout, ALGORITHM_LEFT_ASYMMETRIC, ALGORITHM_RIGHT_SYMMETRIC)))
> >  			return 0;
> > +		break;
> >  
> >  	default:
> >  		break;
> > 
> 

I've picked it up for 5.13, thanks.

Mike