blk_queue_find_tag (9) - Linux Manuals
blk_queue_find_tag: find a request by its tag and queue
blk_queue_find_tag - find a request by its tag and queue
struct request * blk_queue_find_tag(struct request_queue
* q, int tag);
- The request queue for the device
- The tag of the request
Should be used when a device returns a tag and you want to match it with a request.