From: "Gustavo A. R. Silva" <garsilva@embeddedor.com>
Date: Sun, 15 Oct 2017 12:55:23 -0500
Subject: ceph: mark expected switch fall-throughs
Git-commit: 18370b36b28a6c1b059392e9b8f9a80332e51e7c
Patch-mainline: v4.15-rc1
References: FATE#324714
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
[idryomov@gmail.com: amended "Older OSDs" comment]
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Luis Henriques <lhenriques@suse.com>
---
net/ceph/ceph_hash.c | 12 +++++++++++-
net/ceph/messenger.c | 1 +
net/ceph/mon_client.c | 5 +++--
3 files changed, 15 insertions(+), 3 deletions(-)
--- a/net/ceph/ceph_hash.c
+++ b/net/ceph/ceph_hash.c
@@ -47,28 +47,38 @@ unsigned int ceph_str_hash_rjenkins(cons
/* handle the last 11 bytes */
c = c + length;
- switch (len) { /* all the case statements fall through */
+ switch (len) {
case 11:
c = c + ((__u32)k[10] << 24);
+ /* fall through */
case 10:
c = c + ((__u32)k[9] << 16);
+ /* fall through */
case 9:
c = c + ((__u32)k[8] << 8);
/* the first byte of c is reserved for the length */
+ /* fall through */
case 8:
b = b + ((__u32)k[7] << 24);
+ /* fall through */
case 7:
b = b + ((__u32)k[6] << 16);
+ /* fall through */
case 6:
b = b + ((__u32)k[5] << 8);
+ /* fall through */
case 5:
b = b + k[4];
+ /* fall through */
case 4:
a = a + ((__u32)k[3] << 24);
+ /* fall through */
case 3:
a = a + ((__u32)k[2] << 16);
+ /* fall through */
case 2:
a = a + ((__u32)k[1] << 8);
+ /* fall through */
case 1:
a = a + k[0];
/* case 0: nothing left to add */
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -429,6 +429,7 @@ static void ceph_sock_state_change(struc
switch (sk->sk_state) {
case TCP_CLOSE:
dout("%s TCP_CLOSE\n", __func__);
+ /* fall through */
case TCP_CLOSE_WAIT:
dout("%s TCP_CLOSE_WAIT\n", __func__);
con_sock_state_closing(con);
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -1278,9 +1278,10 @@ static struct ceph_msg *mon_alloc_msg(st
/*
* Older OSDs don't set reply tid even if the orignal
- * request had a non-zero tid. Workaround this weirdness
- * by falling through to the allocate case.
+ * request had a non-zero tid. Work around this weirdness
+ * by allocating a new message.
*/
+ /* fall through */
case CEPH_MSG_MON_MAP:
case CEPH_MSG_MDS_MAP:
case CEPH_MSG_OSD_MAP: