On Fri, Nov 16, 2018 at 12:37:32AM -0800, Omar Sandoval wrote: > On Fri, Nov 16, 2018 at 09:10:05AM +0100, Christoph Hellwig wrote: > > blk_mq_stop_hw_queues doesn't need any locking, and the ide > > dev_flags field isn't protected by it either. > > Is it a bug that dev_flags is no longer protected by queue_lock after > the mq conversion?
Most if not all users weren't under queue_lock before. As far as I can tell it generally is set in the probe path, and without any obvious locking.
