2 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/raid/md.h b/include/linux/raid/md.h
index 8ab630b67fcc..81a1a02d4566 100644
--- a/include/linux/raid/md.h
+++ b/include/linux/raid/md.h
@@ -94,6 +94,7 @@ extern int sync_page_io(struct block_device *bdev, sector_t sector, int size,
 extern void md_do_sync(mddev_t *mddev);
 extern void md_new_event(mddev_t *mddev);
 extern void md_allow_write(mddev_t *mddev);
+extern void md_wait_for_blocked_rdev(mdk_rdev_t *rdev, mddev_t *mddev);
 
 #endif /* CONFIG_MD */
 #endif 
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index 7bb6d1abf71e..812ffa590cff 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -84,6 +84,10 @@ struct mdk_rdev_s
 #define AllReserved     6               /* If whole device is reserved for
                                          * one array */
 #define AutoDetected    7               /* added by auto-detect */
+#define Blocked         8               /* An error occured on an externally
+                                         * managed array, don't allow writes
+                                         * until it is cleared */
+        wait_queue_head_t blocked_wait;
 
         int desc_nr;                    /* descriptor index in the superblock */
         int raid_disk;                  /* role of device in array */