[Qemu-block] [PATCH 2/3] mirror: Use block_job_relax_cpu during bitmap scanning

[Fam Zheng]

Sleeping for 0 second may not be as effective as we want, use
block_job_relax_cpu.

Signed-off-by: Fam Zheng <address@hidden>
---
 block/mirror.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/mirror.c b/block/mirror.c
index 62db031..ca55578 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -438,7 +438,7 @@ static void coroutine_fn mirror_run(void *opaque)
 
             if (now - last_pause_ns > SLICE_TIME) {
                 last_pause_ns = now;
-                block_job_sleep_ns(&s->common, QEMU_CLOCK_REALTIME, 0);
+                block_job_relax_cpu(&s->common);
             }
 
             if (block_job_is_cancelled(&s->common)) {
-- 
2.4.3