On 3/27/19 9:05 PM, Ming Lei wrote: > loop is one block device, for any bio submitted to this device, > the upper layer does guarantee that pages added to loop's bio won't > go away when the bio is in-flight. > > So mark loop's bvec as ITER_BVEC_FLAG_NO_REF then get_page/put_page > can be saved for serving loop's IO. Curious if this is a noticable win on loop? In any case, looks fine to me, I'll queue it up for 5.2. -- Jens Axboe
