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Date:   Tue, 20 Apr 2021 15:25:51 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Philipp Reisner <philipp.reisner@...bit.com>,
        Lars Ellenberg <lars.ellenberg@...bit.com>,
        Jens Axboe <axboe@...nel.dk>
Cc:     drbd-dev@...ts.linbit.com, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH 027/141] drbd: Fix fall-through warnings for Clang

Hi all,

Friendly ping: who can take this, please?

Thanks
--
Gustavo

On 11/20/20 12:28, Gustavo A. R. Silva wrote:
> In preparation to enable -Wimplicit-fallthrough for Clang, fix a couple
> of warnings by explicitly adding a break statement instead of just
> letting the code fall through to the next, and by adding a fallthrough
> pseudo-keyword in places whre the code is intended to fall through.
> 
> Link: https://github.com/KSPP/linux/issues/115
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
> ---
>  drivers/block/drbd/drbd_receiver.c | 1 +
>  drivers/block/drbd/drbd_req.c      | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
> index dc333dbe5232..c19bb74ac935 100644
> --- a/drivers/block/drbd/drbd_receiver.c
> +++ b/drivers/block/drbd/drbd_receiver.c
> @@ -5863,6 +5863,7 @@ static int got_NegRSDReply(struct drbd_connection *connection, struct packet_inf
>  		switch (pi->cmd) {
>  		case P_NEG_RS_DREPLY:
>  			drbd_rs_failed_io(device, sector, size);
> +			break;
>  		case P_RS_CANCEL:
>  			break;
>  		default:
> diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
> index 330f851cb8f0..9f212a923a3c 100644
> --- a/drivers/block/drbd/drbd_req.c
> +++ b/drivers/block/drbd/drbd_req.c
> @@ -750,6 +750,7 @@ int __req_mod(struct drbd_request *req, enum drbd_req_event what,
>  
>  	case WRITE_ACKED_BY_PEER_AND_SIS:
>  		req->rq_state |= RQ_NET_SIS;
> +		fallthrough;
>  	case WRITE_ACKED_BY_PEER:
>  		/* Normal operation protocol C: successfully written on peer.
>  		 * During resync, even in protocol != C,
> 

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