virtio-blk: return VIRTIO_BLK_F_FLUSH to header.

This got renamed and clarified, but let's not break any userspace out there.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/include/linux/virtio_blk.h b/include/linux/virtio_blk.h
index e2aba15..6d8e61c 100644 (file)
--- a/include/linux/virtio_blk.h
+++ b/include/linux/virtio_blk.h
@@ -41,6 +41,11 @@
 #define VIRTIO_BLK_F_TOPOLOGY  10      /* Topology information is available */
 #define VIRTIO_BLK_F_CONFIG_WCE        11      /* Writeback mode available in config */
 
+#ifndef __KERNEL__
+/* Old (deprecated) name for VIRTIO_BLK_F_WCE. */
+#define VIRTIO_BLK_F_FLUSH VIRTIO_BLK_F_WCE
+#endif
+
 #define VIRTIO_BLK_ID_BYTES    20      /* ID string length */
 
 struct virtio_blk_config {