On 15/07/21 11:47, Yury Kamenev wrote:

+#ifdef CONFIG_VIRTIO_BLK_NO_PART_SCAN
+	if (unlikely(partitions_scanning_disable))
+		/* disable partitions scanning if it was stated in virtio features*/
+		if (virtio_has_feature(vdev, VIRTIO_BLK_F_NO_PART_SCAN))
+			vblk->disk->flags |= GENHD_FL_NO_PART_SCAN;
+#endif
+

Has this been added to the spec?  It doesn't seem like a good idea, as 
pointed out by Stefan[1], Christoph[2] and myself[3].

Paolo

[1] 
https://lore.kernel.org/linux-block/20210524145654.GA2632@lst.de/T/#m2697cb41578490aad49ed1d8fa6604bf0924b54d (local)
[2] 
https://lore.kernel.org/linux-block/20210524145654.GA2632@lst.de/T/#mc59329fd824102f94ac2f6b29fe94a652849aca0 (local)
[3] 
https://lore.kernel.org/linux-block/20210524145654.GA2632@lst.de/T/#mee6787c4fd87790b64feccc9e77fd5f618c2c336 (local)