Like offset_into_cluster() and size_to_clusters(), but for subclusters. Signed-off-by: Alberto Garcia <be...@igalia.com> Reviewed-by: Eric Blake <ebl...@redhat.com> Reviewed-by: Max Reitz <mre...@redhat.com> --- block/qcow2.h | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/block/qcow2.h b/block/qcow2.h index 2503374677..4fe31adfd3 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -555,11 +555,21 @@ static inline int64_t offset_into_cluster(BDRVQcow2State *s, int64_t offset) return offset & (s->cluster_size - 1); } +static inline int64_t offset_into_subcluster(BDRVQcow2State *s, int64_t offset) +{ + return offset & (s->subcluster_size - 1); +} + static inline uint64_t size_to_clusters(BDRVQcow2State *s, uint64_t size) { return (size + (s->cluster_size - 1)) >> s->cluster_bits; } +static inline uint64_t size_to_subclusters(BDRVQcow2State *s, uint64_t size) +{ + return (size + (s->subcluster_size - 1)) >> s->subcluster_bits; +} + static inline int64_t size_to_l1(BDRVQcow2State *s, int64_t size) { int shift = s->cluster_bits + s->l2_bits; -- 2.20.1