1 files changed, 2 insertions, 0 deletions
diff --git a/mdadm.h b/mdadm.h
index 0424331b..73881e2d 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -530,6 +530,8 @@ extern int enough(int level, int raid_disks, int layout, int clean,
 extern int ask(char *mesg);
 extern unsigned long long get_component_size(int fd);
 extern void remove_partitions(int fd);
+extern unsigned long long calc_array_size(int level, int raid_disks, int layout,
+				   int chunksize, unsigned long long devsize);
 
 
 extern char *human_size(long long bytes);