[RFC PATCH v3 53/78] nbd: add fallthrough pseudo-keyword

[Emmanouil Pitsidianakis]

In preparation of raising -Wimplicit-fallthrough to 5, replace all
fall-through comments with the fallthrough attribute pseudo-keyword.

Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
---
 nbd/client.c | 4 ++--
 nbd/common.c | 2 +-
 qemu-nbd.c   | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/nbd/client.c b/nbd/client.c
index 29ffc609a4..04507249b2 100644
--- a/nbd/client.c
+++ b/nbd/client.c
@@ -1051,7 +1051,7 @@ int nbd_receive_negotiate(QIOChannel *ioc, 
QCryptoTLSCreds *tlscreds,
             }
             info->base_allocation = result == 1;
         }
-        /* fall through */
+        fallthrough;
     case NBD_MODE_SIMPLE:
         /* Try NBD_OPT_GO first - if it works, we are done (it
          * also gives us a good message if the server requires
@@ -1074,7 +1074,7 @@ int nbd_receive_negotiate(QIOChannel *ioc, 
QCryptoTLSCreds *tlscreds,
         if (nbd_receive_query_exports(ioc, info->name, errp) < 0) {
             return -EINVAL;
         }
-        /* fall through */
+        fallthrough;
     case NBD_MODE_EXPORT_NAME:
         /* write the export name request */
         if (nbd_send_option_request(ioc, NBD_OPT_EXPORT_NAME, -1, info->name,
diff --git a/nbd/common.c b/nbd/common.c
index 3247c1d618..1140ea0888 100644
--- a/nbd/common.c
+++ b/nbd/common.c
@@ -249,7 +249,7 @@ int nbd_errno_to_system_errno(int err)
         break;
     default:
         trace_nbd_unknown_error(err);
-        /* fallthrough */
+        fallthrough;
     case NBD_EINVAL:
         ret = EINVAL;
         break;
diff --git a/qemu-nbd.c b/qemu-nbd.c
index 186e6468b1..41e50208a5 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -632,7 +632,7 @@ int main(int argc, char **argv)
             break;
         case 'n':
             optarg = (char *) "none";
-            /* fallthrough */
+            fallthrough;
         case QEMU_NBD_OPT_CACHE:
             if (seen_cache) {
                 error_report("-n and --cache can only be specified once");
@@ -708,7 +708,7 @@ int main(int argc, char **argv)
             } else {
                 sn_id_or_name = optarg;
             }
-            /* fall through */
+            fallthrough;
         case 'r':
             readonly = true;
             flags &= ~BDRV_O_RDWR;
-- 
2.39.2