centos man page for blk_add_trace_rq

BLK_ADD_TRACE_RQ(9)						   Block Devices					       BLK_ADD_TRACE_RQ(9)

NAME
       blk_add_trace_rq - Add a trace for a request oriented action

SYNOPSIS
       void blk_add_trace_rq(struct request_queue * q, struct request * rq, u32 what);

ARGUMENTS
       q
	   queue the io is for

       rq
	   the source request

       what
	   the action

DESCRIPTION
       Records an action against a request. Will log the bio offset + size.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						       BLK_ADD_TRACE_RQ(9)