[PATCH] virtio-blk: Allow extended partitions

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From: Fam Zheng <hidden>
Date: 2015-06-23 03:39:14
Also in: lkml
Subsystem: block layer, the rest, virtio block and scsi drivers, virtio core · Maintainers: Jens Axboe, Linus Torvalds, "Michael S. Tsirkin", Jason Wang, Eugenio Pérez

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 <redacted>
---
 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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