On 09-09-2021 21:46, Chaitanya Kulkarni wrote: > >> diff --git a/block/blk-mq.c b/block/blk-mq.c >> index 65d3a63aecc6..40a9b085f029 100644 >> --- a/block/blk-mq.c >> +++ b/block/blk-mq.c >> @@ -2283,6 +2283,7 @@ blk_qc_t blk_mq_submit_bio(struct bio *bio) >> blk_queue_exit(q); >> return BLK_QC_T_NONE; >> } >> +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. Regards, ~Praveen.