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-rw-r--r--drivers/md/bitmap.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/md/bitmap.h b/drivers/md/bitmap.h
index f1f4dd01090d..8731fa06855f 100644
--- a/drivers/md/bitmap.h
+++ b/drivers/md/bitmap.h
@@ -9,8 +9,10 @@
#define BITMAP_MAJOR_LO 3
/* version 4 insists the bitmap is in little-endian order
* with version 3, it is host-endian which is non-portable
+ * Version 5 is currently set only for clustered devices
*/
#define BITMAP_MAJOR_HI 4
+#define BITMAP_MAJOR_CLUSTERED 5
#define BITMAP_MAJOR_HOSTENDIAN 3
/*