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-rw-r--r--block/mirror.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/mirror.c b/block/mirror.c
index 9347533b9b..a62ad86c28 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -305,7 +305,7 @@ static void coroutine_fn mirror_run(void *opaque)
}
s->common.len = bdrv_getlength(bs);
- if (s->common.len < 0) {
+ if (s->common.len <= 0) {
block_job_completed(&s->common, s->common.len);
return;
}