On 6/14/22 11:57 AM, Bart Van Assche wrote: > Since the introduction of blk_mq_get_hctx_type() the operation type in > the second argument of blk_mq_get_hctx_type() matters. Make sure that > a hardware queue of type HCTX_TYPE_DEFAULT is selected instead of a > hardware queue of type HCTX_TYPE_READ. Just reading this commit message, it only states that we need to make sure that a write vs read queue. But not why that is important. Can you augment it a little bit? -- Jens Axboe