xen_disk: open disks with BDRV_O_NOCACHE | BDRV_O_NATIVE_AIO

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

diff --git a/hw/xen_disk.c b/hw/xen_disk.c
index 285a951d879fd790ebf8f6ef6694c4b4083b4a85..16c3e66921a774a4a6bffb777511fdece32fae1c 100644 (file)
--- a/hw/xen_disk.c
+++ b/hw/xen_disk.c
@@ -663,10 +663,10 @@ static int blk_init(struct XenDevice *xendev)
     }
 
     /* read-only ? */
+    qflags = BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_NATIVE_AIO;
     if (strcmp(blkdev->mode, "w") == 0) {
-        qflags = BDRV_O_RDWR;
+        qflags |= BDRV_O_RDWR;
     } else {
-        qflags = 0;
         info  |= VDISK_READONLY;
     }