block: Avoid unecessary drv->bdrv_getlength() calls

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

diff --git a/block/raw-posix.c b/block/raw-posix.c
index 6f03fbf7931f1038893b48ec8490178055865485..f6d48bbdb2d685074d547e6a28493c7f4519f9a2 100644 (file)
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -1715,7 +1715,8 @@ static BlockDriver bdrv_host_floppy = {
     .bdrv_aio_flush    = raw_aio_flush,
 
     .bdrv_truncate      = raw_truncate,
-    .bdrv_getlength    = raw_getlength,
+    .bdrv_getlength      = raw_getlength,
+    .has_variable_length = true,
     .bdrv_get_allocated_file_size
                         = raw_get_allocated_file_size,
 
@@ -1824,7 +1825,8 @@ static BlockDriver bdrv_host_cdrom = {
     .bdrv_aio_flush    = raw_aio_flush,
 
     .bdrv_truncate      = raw_truncate,
-    .bdrv_getlength     = raw_getlength,
+    .bdrv_getlength      = raw_getlength,
+    .has_variable_length = true,
     .bdrv_get_allocated_file_size
                         = raw_get_allocated_file_size,
 
@@ -1951,7 +1953,8 @@ static BlockDriver bdrv_host_cdrom = {
     .bdrv_aio_flush    = raw_aio_flush,
 
     .bdrv_truncate      = raw_truncate,
-    .bdrv_getlength     = raw_getlength,
+    .bdrv_getlength      = raw_getlength,
+    .has_variable_length = true,
     .bdrv_get_allocated_file_size
                         = raw_get_allocated_file_size,