blk_queue_bypass_start (9) - Linux Manuals
blk_queue_bypass_start: enter queue bypass mode
blk_queue_bypass_start - enter queue bypass mode
void blk_queue_bypass_start(struct request_queue
- queue of interest
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_bypasstrue inside queue or RCU read lock.