1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/virtio_blk.h b/include/linux/virtio_blk.h
index c75a9e82b924..d4695a3356d0 100644
--- a/include/linux/virtio_blk.h
+++ b/include/linux/virtio_blk.h
@@ -9,6 +9,7 @@
 #define VIRTIO_BLK_F_BARRIER    0       /* Does host support barriers? */
 #define VIRTIO_BLK_F_SIZE_MAX   1       /* Indicates maximum segment size */
 #define VIRTIO_BLK_F_SEG_MAX    2       /* Indicates maximum # of segments */
+#define VIRTIO_BLK_F_GEOMETRY   4       /* Legacy geometry available  */
 
 struct virtio_blk_config
 {
@@ -18,6 +19,12 @@ struct virtio_blk_config
         __le32 size_max;
         /* The maximum number of segments (if VIRTIO_BLK_F_SEG_MAX) */
         __le32 seg_max;
+        /* geometry the device (if VIRTIO_BLK_F_GEOMETRY) */
+        struct virtio_blk_geometry {
+                __le16 cylinders;
+                __u8 heads;
+                __u8 sectors;
+        } geometry;
 } __attribute__((packed));
 
 /* These two define direction. */