On Thu, 2018-03-22 at 18:56 +0800, Shawn Lin wrote:
> dd if=/dev/urandom of=/dev/mmcblk1 bs=4k count=10000
> with a SD card hotplug during transfer reports a warning below
> introduced by commit a063057d7c73 ("block: Fix a race between
> request queue removal and the block cgroup controller"). So we
> should now remove the disk, partition and bdi sysfs attributes
> before cleaning up the request queue associated with the disk.
Since del_gendisk() may submit I/O calling blk_cleanup_queue() before
del_gendisk() has never been safe so this requirement is not really new.
Anyway, thanks for this patch.
Reviewed-by: Bart Van Assche <bart.vanassche@xxxxxxx>
