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.