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 4.8.                 January 2017                      BLK_ADD_TRACE_BIO(9)