6 files changed, 7 insertions, 0 deletions
diff --git a/ANNOUNCE-2.6.3 b/ANNOUNCE-2.6.3
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/ANNOUNCE-2.6.3
diff --git a/ChangeLog b/ChangeLog
index 10ddcf0..71d19f4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 Changes Prior to this release
     -   allow --write-behind to be set for --grow.
+    -   When adding new disk to an array, don't reserve so much bitmap
+        space that the disk cannot store the required data. (Needed when
+	1.x array was created with older mdadm).
 
 Changes Prior to 2.6.2 release
     -   --fail detached and --remove faulty can be used to fail and
diff --git a/crc32.c b/crc32.c
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/crc32.c
diff --git a/crc32.h b/crc32.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/crc32.h
diff --git a/super-ddf.c b/super-ddf.c
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/super-ddf.c
diff --git a/super1.c b/super1.c
index 0ff11fb..cf46a2f 100644
--- a/super1.c
+++ b/super1.c
@@ -917,12 +917,16 @@ static int write_init_super1(struct supertype *st, void *sbv,
 		break;
 	case 1:
 		sb->super_offset = __cpu_to_le64(0);
+		if (4*2 + bm_space + __le64_to_cpu(sb->size) > dsize)
+			bm_space = dsize - __le64_to_cpu(sb->size) - 4*2;
 		sb->data_offset = __cpu_to_le64(bm_space + 4*2);
 		sb->data_size = __cpu_to_le64(dsize - bm_space - 4*2);
 		break;
 	case 2:
 		sb_offset = 4*2;
 		sb->super_offset = __cpu_to_le64(4*2);
+		if (4*2 + 4*2 + bm_space + __le64_to_cpu(sb->size) > dsize)
+			bm_space = dsize - __le64_to_cpu(sb->size) - 4*2 - 4*2;
 		sb->data_offset = __cpu_to_le64(4*2 + 4*2 + bm_space);
 		sb->data_size = __cpu_to_le64(dsize - 4*2 - 4*2 - bm_space );
 		break;