centos man page for blk_add_trace_rq_remap

BLK_ADD_TRACE_RQ_REM(9) 					   Block Devices					   BLK_ADD_TRACE_RQ_REM(9)

NAME
       blk_add_trace_rq_remap - Add a trace for a request-remap operation

SYNOPSIS
       void blk_add_trace_rq_remap(void * ignore, struct request_queue * q, struct request * rq, dev_t dev, sector_t from);

ARGUMENTS
       ignore
	   trace callback data parameter (not used)

       q
	   queue the io is for

       rq
	   the source request

       dev
	   target device

       from
	   source sector

DESCRIPTION
       Device mapper remaps request to other devices. Add a trace for that action.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   BLK_ADD_TRACE_RQ_REM(9)