1 files changed, 2 insertions, 2 deletions
diff --git a/mdadm.8 b/mdadm.8
index fb20383..3b6ffa0 100644
--- a/mdadm.8
+++ b/mdadm.8
@@ -614,8 +614,8 @@ When using a file based bitmap, the default is to use the smallest
 size that is at-least 4 and requires no more than 2^21 chunks.
 When using an
 .B internal
-bitmap, the chunksize is automatically determined to make best use of
-available space.
+bitmap, the chunksize defaults to 64Meg, or larger if necessary to
+fit the bitmap into the available space.
 
 .TP
 .BR \-W ", " \-\-write\-mostly