1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index c77dca3221ed..5b2102e40286 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -81,6 +81,8 @@ struct mdk_rdev_s
 #define In_sync         2               /* device is in_sync with rest of array */
 #define WriteMostly     4               /* Avoid reading if at all possible */
 #define BarriersNotsupp 5               /* BIO_RW_BARRIER is not supported */
+#define AllReserved     6               /* If whole device is reserved for
+                                         * one array */
 
         int desc_nr;                    /* descriptor index in the superblock */
         int raid_disk;                  /* role of device in array */