This will allow up to DISK_MAX_PARTS (256) partitions, with for example
GPT in the guest. Otherwise, the partition scan code will only discover
the first 15 partitions.

Signed-off-by: Fam Zheng <[email protected]>
---
 drivers/block/virtio_blk.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 5ea2f0b..97daa70 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -657,6 +657,7 @@ static int virtblk_probe(struct virtio_device *vdev)
        vblk->disk->private_data = vblk;
        vblk->disk->fops = &virtblk_fops;
        vblk->disk->driverfs_dev = &vdev->dev;
+       vblk->disk->flags |= GENHD_FL_EXT_DEVT;
        vblk->index = index;
 
        /* configure queue flush support */
-- 
2.4.2

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