1 files changed, 5 insertions, 0 deletions
diff --git a/block/qcow2.h b/block/qcow2.h
index e4b5e11a91..0940b1b3e8 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -277,6 +277,11 @@ static inline int size_to_l1(BDRVQcowState *s, int64_t size)
     return (size + (1ULL << shift) - 1) >> shift;
 }
 
+static inline int offset_to_l2_index(BDRVQcowState *s, int64_t offset)
+{
+    return (offset >> s->cluster_bits) & (s->l2_size - 1);
+}
+
 static inline int64_t align_offset(int64_t offset, int n)
 {
     offset = (offset + n - 1) & ~(n - 1);