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-rw-r--r--drivers/md/md.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 7ab5ea15545..10597bfec00 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -78,6 +78,9 @@ struct mdk_rdev_s
int desc_nr; /* descriptor index in the superblock */
int raid_disk; /* role of device in array */
+ int new_raid_disk; /* role that the device will have in
+ * the array after a level-change completes.
+ */
int saved_raid_disk; /* role that device used to have in the
* array and could again if we did a partial
* resync from the bitmap