Merge branch 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[cascardo/linux.git] / include / uapi / linux / virtio_blk.h

diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h
index 6d8e61c..9ad67b2 100644 (file)
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -40,6 +40,7 @@
 #define VIRTIO_BLK_F_WCE       9       /* Writeback mode enabled after reset */
 #define VIRTIO_BLK_F_TOPOLOGY  10      /* Topology information is available */
 #define VIRTIO_BLK_F_CONFIG_WCE        11      /* Writeback mode available in config */
+#define VIRTIO_BLK_F_MQ                12      /* support more than one vq */
 
 #ifndef __KERNEL__
 /* Old (deprecated) name for VIRTIO_BLK_F_WCE. */
@@ -77,6 +78,10 @@ struct virtio_blk_config {
 
        /* writeback mode (if VIRTIO_BLK_F_CONFIG_WCE) */
        __u8 wce;
+       __u8 unused;
+
+       /* number of vqs, only available when VIRTIO_BLK_F_MQ is set */
+       __u16 num_queues;
 } __attribute__((packed));
 
 /*