On Tue, 2017-04-25 at 14:30 -0700, Omar Sandoval wrote: > Jens, could you ack that dropping the lock is okay? Hello Omar, If you have a look at the block layer history then you will see that the current approach for shutting down block layer queues is an approach that I had introduced myself. See also commits 3f3299d5c026, 807592a4fafb and c246e80d8673. Bart.