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,
                             unsigned int nr_bytes, u32 what);

ARGUMENTS
       q
           queue the io is for

       rq
           the source request

       nr_bytes
           number of completed bytes

       what
           the action

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

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                       BLK_ADD_TRACE_RQ(9)