On Mon, Sep 13, 2021 at 09:54:54AM +0530, Praveen Kumar wrote: > >> +EXPORT_SYMBOL_GPL(blk_mq_submit_bio); > >> > > > > Where is the code that used this API ? > > > > Thanks Chaitanya for your response. Please check my response to Christoph. > That should give overall understanding of the use-case. Which really doesn't matter, while you keep ingoring the relevant question. If you code is not upstream or at least actively being submitted upstream your questions have no relevance whatsoever. If you do not undertand that basic fact your are in the wrong place here.