*/
max_depth = bqt->max_depth;
if (!rq_is_sync(rq) && max_depth > 1) {
- max_depth -= 2;
- if (!max_depth)
+ switch (max_depth) {
+ case 2:
max_depth = 1;
+ break;
+ case 3:
+ max_depth = 2;
+ break;
+ default:
+ max_depth -= 2;
+ }
if (q->in_flight[BLK_RW_ASYNC] > max_depth)
return 1;
}