1 files changed, 1 insertions, 0 deletions
diff --git a/commit.h b/commit.h
index 33c66b2177..251d877fcf 100644
--- a/commit.h
+++ b/commit.h
@@ -14,6 +14,7 @@
 #define GENERATION_NUMBER_INFINITY ((1ULL << 63) - 1)
 #define GENERATION_NUMBER_V1_MAX 0x3FFFFFFF
 #define GENERATION_NUMBER_ZERO 0
+#define GENERATION_NUMBER_V2_OFFSET_MAX ((1ULL << 31) - 1)
 
 struct commit_list {
 	struct commit *item;