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-rw-r--r--block/qcow2.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/qcow2.c b/block/qcow2.c
index 62febfc..a6012dc 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -2412,7 +2412,7 @@ static bool is_zero_cluster(BlockDriverState *bs, int64_t start)
BlockDriverState *file;
int64_t res = bdrv_get_block_status_above(bs, NULL, start,
s->cluster_sectors, &nr, &file);
- return res >= 0 && ((res & BDRV_BLOCK_ZERO) || !(res & BDRV_BLOCK_DATA));
+ return res >= 0 && (res & BDRV_BLOCK_ZERO);
}
static bool is_zero_cluster_top_locked(BlockDriverState *bs, int64_t start)