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-rw-r--r--block/backup-top.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/backup-top.c b/block/backup-top.c
index 779956ddc2..6e7e7bf340 100644
--- a/block/backup-top.c
+++ b/block/backup-top.c
@@ -61,7 +61,7 @@ static coroutine_fn int backup_top_cbw(BlockDriverState *bs, uint64_t offset,
off = QEMU_ALIGN_DOWN(offset, s->cluster_size);
end = QEMU_ALIGN_UP(offset + bytes, s->cluster_size);
- return block_copy(s->bcs, off, end - off, true, NULL);
+ return block_copy(s->bcs, off, end - off, true);
}
static int coroutine_fn backup_top_co_pdiscard(BlockDriverState *bs,