blk_queue_bypass_start - enter queue bypass mode
void blk_queue_bypass_start(struct request_queue * q);
In bypass mode, only the dispatch FIFO queue of q is used. This function makes q enter bypass mode and drains all requests which were throttled or issued before. On return, it's guaranteed that no request is being throttled or has ELVPRIV set and blk_queue_bypass true inside queue or RCU read lock.
|January 2017||Kernel Hackers Manual 4.8.|