@@ -1757,12 +1757,15 @@ void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay)
if (unlikely(current->flags & PF_KTHREAD))
return;
- if (!blk_get_queue(q))
- return;
+ if (current->throttle_queue != q) {
+ if (!blk_get_queue(q))
+ return;
+
+ if (current->throttle_queue)
+ blk_put_queue(current->throttle_queue);
+ current->throttle_queue = q;
+ }
- if (current->throttle_queue)
- blk_put_queue(current->throttle_queue);
- current->throttle_queue = q;
if (use_memdelay)
current->use_memdelay = use_memdelay;
set_notify_resume(current);