On Thu, Apr 06, 2017 at 11:10:45AM -0700, Bart Van Assche wrote: > Hello Jens, > > The five patches in this patch series fix the queue lockup I reported > recently on the linux-block mailing list. Please consider these patches > for inclusion in the upstream kernel. I read the commit log of the 5 patches, looks not found descriptions about root cause of the queue lockup, so could you explain a bit about the reason behind? Thanks, Ming