* [PATCH RFC] virtio_blk: WCE is assumed on under VIRTIO 1.0
@ 2014-10-23 21:46 Michael S. Tsirkin
0 siblings, 0 replies; only message in thread
From: Michael S. Tsirkin @ 2014-10-23 21:46 UTC (permalink / raw)
To: linux-kernel; +Cc: Rusty Russell, virtualization, Cornelia Huck
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
drivers/block/virtio_blk.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index adfba9f..1f8b111 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -478,7 +478,8 @@ static int virtblk_get_cache_mode(struct virtio_device *vdev)
struct virtio_blk_config, wce,
&writeback);
if (err)
- writeback = virtio_has_feature(vdev, VIRTIO_BLK_F_WCE);
+ writeback = virtio_has_feature(vdev, VIRTIO_BLK_F_WCE) ||
+ virtio_has_feature(vdev, VIRTIO_F_VERSION_1);
return writeback;
}
--
MST
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2014-10-23 21:46 [PATCH RFC] virtio_blk: WCE is assumed on under VIRTIO 1.0 Michael S. Tsirkin
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