diff options
| -rw-r--r-- | block/file-win32.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/block/file-win32.c b/block/file-win32.c index a6b0dda5c3..fa569685d8 100644 --- a/block/file-win32.c +++ b/block/file-win32.c @@ -408,6 +408,9 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags, win32_aio_attach_aio_context(s->aio, bdrv_get_aio_context(bs)); } + /* When extending regular files, we get zeros from the OS */ + bs->supported_truncate_flags = BDRV_REQ_ZERO_WRITE; + ret = 0; fail: qemu_opts_del(opts); |