void blk_queue_prep_rq (request_queue_t * q, prep_rq_fn * pfn);
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.
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If you have comments on the formatting of this manpage, then please contact Michael Still (mikal@stillhq.com).
This documentation was generated with kernel version 2.5.70.