suse man page for blk_queue_invalidate_tags

BLK_QUEUE_INVALIDATE(9) 					   Block Devices					   BLK_QUEUE_INVALIDATE(9)

NAME
       blk_queue_invalidate_tags - invalidate all pending tags

SYNOPSIS
       void blk_queue_invalidate_tags(struct request_queue * q);

ARGUMENTS
       q
	   the request queue for the device

DESCRIPTION
       Hardware conditions may dictate a need to stop all pending requests. In this case, we will safely clear the block side of the tag queue and
       readd all requests to the request queue in the right order.

NOTES
       queue lock must be held.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010						   BLK_QUEUE_INVALIDATE(9)