BLK_QUEUE_PREP_RQ(9) Block Devices BLK_QUEUE_PREP_RQ(9)
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.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 BLK_QUEUE_PREP_RQ(9)
