block: Avoid unecessary drv->bdrv_getlength() calls

[mirror_qemu.git] / block / raw-win32.c

diff --git a/block/raw-win32.c b/block/raw-win32.c
index 676b5701db6700c6c5a588783bc9a8c7a58a7409..2741e4de10b9989ca916bfe90357680c2f4fbf54 100644 (file)
--- a/block/raw-win32.c
+++ b/block/raw-win32.c
@@ -616,7 +616,9 @@ static BlockDriver bdrv_host_device = {
     .bdrv_aio_writev    = raw_aio_writev,
     .bdrv_aio_flush     = raw_aio_flush,
 
-    .bdrv_getlength    = raw_getlength,
+    .bdrv_getlength      = raw_getlength,
+    .has_variable_length = true,
+
     .bdrv_get_allocated_file_size
                         = raw_get_allocated_file_size,
 };