centos man page for blk_delay_queue

BLK_DELAY_QUEUE(9)						   Block Devices						BLK_DELAY_QUEUE(9)

NAME
       blk_delay_queue - restart queueing after defined interval

SYNOPSIS
       void blk_delay_queue(struct request_queue * q, unsigned long msecs);

ARGUMENTS
       q
	   The struct request_queue in question

       msecs
	   Delay in msecs

DESCRIPTION
       Sometimes queueing needs to be postponed for a little while, to allow resources to come back. This function will make sure that queueing is
       restarted around the specified time. Queue lock must be held.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							BLK_DELAY_QUEUE(9)