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path: root/block/vvfat.c
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Diffstat (limited to 'block/vvfat.c')
-rw-r--r--block/vvfat.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/block/vvfat.c b/block/vvfat.c
index c6bf67e..7f230be 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -2968,6 +2968,7 @@ static void write_target_close(BlockDriverState *bs) {
static BlockDriver vvfat_write_target = {
.format_name = "vvfat_write_target",
+ .instance_size = sizeof(void*),
.bdrv_co_pwritev = write_target_commit,
.bdrv_close = write_target_close,
};
@@ -3036,14 +3037,13 @@ static int enable_write_target(BlockDriverState *bs, Error **errp)
unlink(s->qcow_filename);
#endif
- backing = bdrv_new();
+ backing = bdrv_new_open_driver(&vvfat_write_target, NULL, BDRV_O_ALLOW_RDWR,
+ &error_abort);
+ *(void**) backing->opaque = s;
+
bdrv_set_backing_hd(s->bs, backing);
bdrv_unref(backing);
- s->bs->backing->bs->drv = &vvfat_write_target;
- s->bs->backing->bs->opaque = g_new(void *, 1);
- *(void**)s->bs->backing->bs->opaque = s;
-
return 0;
err: