centos man page for blk_queue_bypass_start

BLK_QUEUE_BYPASS_STA(9) 					   Block Devices					   BLK_QUEUE_BYPASS_STA(9)

NAME
       blk_queue_bypass_start - enter queue bypass mode

SYNOPSIS
       void blk_queue_bypass_start(struct request_queue * q);

ARGUMENTS
       q
	   queue of interest

DESCRIPTION
       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.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   BLK_QUEUE_BYPASS_STA(9)