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-rw-r--r--util/thread-pool.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/util/thread-pool.c b/util/thread-pool.c
index 22f9ba3286..27eb777e85 100644
--- a/util/thread-pool.c
+++ b/util/thread-pool.c
@@ -15,6 +15,7 @@
  * GNU GPL, version 2 or (at your option) any later version.
  */
 #include "qemu/osdep.h"
+#include "qemu/defer-call.h"
 #include "qemu/queue.h"
 #include "qemu/thread.h"
 #include "qemu/coroutine.h"
@@ -175,6 +176,8 @@ static void thread_pool_completion_bh(void *opaque)
     ThreadPool *pool = opaque;
     ThreadPoolElement *elem, *next;
 
+    defer_call_begin(); /* cb() may use defer_call() to coalesce work */
+
 restart:
     QLIST_FOREACH_SAFE(elem, &pool->head, all, next) {
         if (elem->state != THREAD_DONE) {
@@ -208,6 +211,8 @@ restart:
             qemu_aio_unref(elem);
         }
     }
+
+    defer_call_end();
 }
 
 static void thread_pool_cancel(BlockAIOCB *acb)