centos man page for blk_add_trace_bio

BLK_ADD_TRACE_BIO(9)						   Block Devices					      BLK_ADD_TRACE_BIO(9)

NAME
       blk_add_trace_bio - Add a trace for a bio oriented action

SYNOPSIS
       void blk_add_trace_bio(struct request_queue * q, struct bio * bio, u32 what, int error);

ARGUMENTS
       q
	   queue the io is for

       bio
	   the source bio

       what
	   the action

       error
	   error, if any

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

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						      BLK_ADD_TRACE_BIO(9)