On Sat, 2017-05-27 at 11:16 +0800, Ming Lei wrote: > What is the real motivation for this debug interface, could Bart explain > a bit? As mentioned in the description of this patch, the purpose of this patch is to allow anyone who is working on a block driver to figure out whether or not a request got stuck in a block driver. This means that .queue_rq() got called for a request but the block driver did not trigger a call to .end_io(). Bart.
