Name

blk_queue_prep_rq — set a prepare_request function for queue

Synopsis

void blk_queue_prep_rq (struct request_queue * q,
 prep_rq_fn * pfn);
 

Arguments

q

queue

pfn

prepare_request function

Description

It's possible for a queue to register a prepare_request callback which is invoked before the request is handed to the request_fn. The goal of the function is to prepare a request for I/O, it can be used to build a cdb from the request data for instance.