diff options
| -rw-r--r-- | block/io.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/block/io.c b/block/io.c index 02528b3823..6fe1b275b6 100644 --- a/block/io.c +++ b/block/io.c @@ -2282,17 +2282,17 @@ static int coroutine_fn bdrv_co_block_status(BlockDriverState *bs, if (ret & (BDRV_BLOCK_DATA | BDRV_BLOCK_ZERO)) { ret |= BDRV_BLOCK_ALLOCATED; - } else if (want_zero && bs->drv->supports_backing) { + } else if (bs->drv->supports_backing) { BlockDriverState *cow_bs = bdrv_cow_bs(bs); - if (cow_bs) { + if (!cow_bs) { + ret |= BDRV_BLOCK_ZERO; + } else if (want_zero) { int64_t size2 = bdrv_getlength(cow_bs); if (size2 >= 0 && offset >= size2) { ret |= BDRV_BLOCK_ZERO; } - } else { - ret |= BDRV_BLOCK_ZERO; } } |