On 2020-06-17 11:49, Simon Arlott wrote: > @@ -3576,9 +3582,19 @@ static void sd_shutdown(struct device *dev) > sd_sync_cache(sdkp, NULL); > } > > - if (system_state != SYSTEM_RESTART && sdkp->device->manage_start_stop) { > - sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n"); > - sd_start_stop_device(sdkp, 0); > + if (sdkp->device->manage_start_stop) { > + bool stop_disk = (system_state != SYSTEM_RESTART); > + > + if (stop_before_reboot > 1) { /* stop all disks */ > + stop_disk = true; > + } else if (stop_before_reboot) { /* non-rotational only */ > + stop_disk |= blk_queue_nonrot(sdkp->disk->queue); > + } > + > + if (stop_disk) { > + sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n"); > + sd_start_stop_device(sdkp, 0); > + } > } > } Is introduction of a new kernel module parameter essential? Or in other words, has it been considered to apply the new behavior to all SSDs? Thanks, Bart.