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vhost: fix VHOST_GET_BACKEND_FEATURES ioctl request definition

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The _IOC_READ flag fits this ioctl request more because this request
actually only writes to, but doesn't read from userspace.
See NOTEs in include/uapi/asm-generic/ioctl.h for more information.

Fixes: 429711aec2 ("vhost: switch to use new message format")
Signed-off-by: Gleb Fotengauer-Malinovskiy <[email protected]>
Acked-by: Jason Wang <[email protected]>
Acked-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Gleb Fotengauer-Malinovskiy authored and David S. Miller committed 2018-09-03 21:23:24 -07:00
1 parent 9fd0e09a4e
commit c48300c92a
1 file changed
+1 -1
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include/uapi/linux/vhost.h
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@@ -176,7 +176,7 @@ struct vhost_memory {
#define VHOST_BACKEND_F_IOTLB_MSG_V2 0x1
#define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64)
#define VHOST_GET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x26, __u64)
#define VHOST_GET_BACKEND_FEATURES _IOR(VHOST_VIRTIO, 0x26, __u64)
/* VHOST_NET specific defines */