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.