drbd: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Warning level 2 was used in this case: -Wimplicit-fallthrough=2

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index be9450f..a36a307 100644 (file)
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -2790,6 +2790,7 @@ static int receive_DataRequest(struct drbd_connection *connection, struct packet
                   then we would do something smarter here than reading
                   the block... */
                peer_req->flags |= EE_RS_THIN_REQ;
+               /* fall through */
        case P_RS_DATA_REQUEST:
                peer_req->w.cb = w_e_end_rsdata_req;
                fault_type = DRBD_FAULT_RS_RD;
@@ -2968,6 +2969,7 @@ static int drbd_asb_recover_0p(struct drbd_peer_device *peer_device) __must_hold
                /* Else fall through to one of the other strategies... */
                drbd_warn(device, "Discard younger/older primary did not find a decision\n"
                     "Using discard-least-changes instead\n");
+               /* fall through */
        case ASB_DISCARD_ZERO_CHG:
                if (ch_peer == 0 && ch_self == 0) {
                        rv = test_bit(RESOLVE_CONFLICTS, &peer_device->connection->flags)
@@ -2979,6 +2981,7 @@ static int drbd_asb_recover_0p(struct drbd_peer_device *peer_device) __must_hold
                }
                if (after_sb_0p == ASB_DISCARD_ZERO_CHG)
                        break;
+               /* else: fall through */
        case ASB_DISCARD_LEAST_CHG:
                if      (ch_self < ch_peer)
                        rv = -1;