commit/stream: Reset delay_ns

Streaming and the commit block job only want to apply throttling when
they actually copied data instead of skipping it, so they made the
calculation of delay_ns conditional. However, delay_ns isn't reset when
skipping some sectors, so instead of not waiting, the old delay is
applied again.

Properly reset delay_ns where needed.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/block/commit.c b/block/commit.c
index ab4fa3c3cf..1432baeef4 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -202,6 +202,8 @@ static void coroutine_fn commit_run(void *opaque)
 
         if (copy && s->common.speed) {
             delay_ns = ratelimit_calculate_delay(&s->limit, n);
+        } else {
+            delay_ns = 0;
         }
     }