On 12/21/2016 04:59 AM, Bart Van Assche wrote:

Since this patch is the first patch that introduces a call to
blk_queue_exit() from a module other than the block layer core,
shouldn't this patch export the blk_queue_exit() function? An attempt
to build mq-deadline as a module resulted in the following:

ERROR: "blk_queue_exit" [block/mq-deadline.ko] undefined!
make[1]: *** [scripts/Makefile.modpost:91: __modpost] Error 1
make: *** [Makefile:1198: modules] Error 2
Execution failed: make all

Yes, it should. I'll make the export for now, I want to move that check
and free/drop into the generic code so that the schedulers don't have to
worry about it.

-- 
Jens Axboe