From: Fam Zheng <famz@redhat.com>
Date: Sun, 6 Sep 2015 09:05:42 +0000 (+0800)
Subject: virtio-blk: Allow extended partitions
X-Git-Tag: v4.3-rc2~10^2~6
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5fa3142da14b162f30e4781ff17e1926c47f28fb;p=platform%2Fkernel%2Flinux-exynos.git

virtio-blk: Allow extended partitions

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 <famz@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index ea2c17c..e93899c 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -656,6 +656,7 @@ 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 */