common/WorkQueue: Make decrease thread num to zero.

Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>

diff --git a/src/common/WorkQueue.cc b/src/common/WorkQueue.cc
index 85150e42471a653131b3460680806b78e8801e22..16b34624b6c9fa17891572254616f8e48912bcbe 100644 (file)
--- a/src/common/WorkQueue.cc
+++ b/src/common/WorkQueue.cc
@@ -78,7 +78,7 @@ void ThreadPool::handle_conf_change(const struct md_config_t *conf,
     assert(r >= 0);
     int v = atoi(buf);
     free(buf);
-    if (v > 0) {
+    if (v >= 0) {
       _lock.Lock();
       _num_threads = v;
       start_threads();