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Date:   Tue, 18 Aug 2020 08:26:37 -0400
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <idryomov@...il.com>, <jlayton@...nel.org>, <davem@...emloft.net>,
        <kuba@...nel.org>, <grandmaster@...klimov.de>
CC:     <ceph-devel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linmiaohe@...wei.com>
Subject: [PATCH] libceph: Convert to use the preferred fallthrough macro

Convert the uses of fallthrough comments to fallthrough macro.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 net/ceph/ceph_hash.c    | 20 ++++++++++----------
 net/ceph/crush/mapper.c |  2 +-
 net/ceph/messenger.c    |  4 ++--
 net/ceph/mon_client.c   |  2 +-
 net/ceph/osd_client.c   |  4 ++--
 5 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/net/ceph/ceph_hash.c b/net/ceph/ceph_hash.c
index 81e1e006c540..16a47c0eef37 100644
--- a/net/ceph/ceph_hash.c
+++ b/net/ceph/ceph_hash.c
@@ -50,35 +50,35 @@ unsigned int ceph_str_hash_rjenkins(const char *str, unsigned int length)
 	switch (len) {
 	case 11:
 		c = c + ((__u32)k[10] << 24);
-		/* fall through */
+		fallthrough;
 	case 10:
 		c = c + ((__u32)k[9] << 16);
-		/* fall through */
+		fallthrough;
 	case 9:
 		c = c + ((__u32)k[8] << 8);
 		/* the first byte of c is reserved for the length */
-		/* fall through */
+		fallthrough;
 	case 8:
 		b = b + ((__u32)k[7] << 24);
-		/* fall through */
+		fallthrough;
 	case 7:
 		b = b + ((__u32)k[6] << 16);
-		/* fall through */
+		fallthrough;
 	case 6:
 		b = b + ((__u32)k[5] << 8);
-		/* fall through */
+		fallthrough;
 	case 5:
 		b = b + k[4];
-		/* fall through */
+		fallthrough;
 	case 4:
 		a = a + ((__u32)k[3] << 24);
-		/* fall through */
+		fallthrough;
 	case 3:
 		a = a + ((__u32)k[2] << 16);
-		/* fall through */
+		fallthrough;
 	case 2:
 		a = a + ((__u32)k[1] << 8);
-		/* fall through */
+		fallthrough;
 	case 1:
 		a = a + k[0];
 		/* case 0: nothing left to add */
diff --git a/net/ceph/crush/mapper.c b/net/ceph/crush/mapper.c
index 07e5614eb3f1..7057f8db4f99 100644
--- a/net/ceph/crush/mapper.c
+++ b/net/ceph/crush/mapper.c
@@ -987,7 +987,7 @@ int crush_do_rule(const struct crush_map *map,
 		case CRUSH_RULE_CHOOSELEAF_FIRSTN:
 		case CRUSH_RULE_CHOOSE_FIRSTN:
 			firstn = 1;
-			/* fall through */
+			fallthrough;
 		case CRUSH_RULE_CHOOSELEAF_INDEP:
 		case CRUSH_RULE_CHOOSE_INDEP:
 			if (wsize == 0)
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index 27d6ab11f9ee..bdfd66ba3843 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -412,7 +412,7 @@ static void ceph_sock_state_change(struct sock *sk)
 	switch (sk->sk_state) {
 	case TCP_CLOSE:
 		dout("%s TCP_CLOSE\n", __func__);
-		/* fall through */
+		fallthrough;
 	case TCP_CLOSE_WAIT:
 		dout("%s TCP_CLOSE_WAIT\n", __func__);
 		con_sock_state_closing(con);
@@ -2751,7 +2751,7 @@ static int try_read(struct ceph_connection *con)
 			switch (ret) {
 			case -EBADMSG:
 				con->error_msg = "bad crc/signature";
-				/* fall through */
+				fallthrough;
 			case -EBADE:
 				ret = -EIO;
 				break;
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index 3d8c8015e976..d633a0aeaa55 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -1307,7 +1307,7 @@ static struct ceph_msg *mon_alloc_msg(struct ceph_connection *con,
 		 * request had a non-zero tid.  Work around this weirdness
 		 * by allocating a new message.
 		 */
-		/* fall through */
+		fallthrough;
 	case CEPH_MSG_MON_MAP:
 	case CEPH_MSG_MDS_MAP:
 	case CEPH_MSG_OSD_MAP:
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index e4fbcad6e7d8..7901ab6c79fd 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -3854,7 +3854,7 @@ static void scan_requests(struct ceph_osd *osd,
 			if (!force_resend && !force_resend_writes)
 				break;
 
-			/* fall through */
+			fallthrough;
 		case CALC_TARGET_NEED_RESEND:
 			cancel_linger_map_check(lreq);
 			/*
@@ -3891,7 +3891,7 @@ static void scan_requests(struct ceph_osd *osd,
 			     !force_resend_writes))
 				break;
 
-			/* fall through */
+			fallthrough;
 		case CALC_TARGET_NEED_RESEND:
 			cancel_map_check(req);
 			unlink_request(osd, req);
-- 
2.19.1

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