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-rw-r--r--drivers/md/raid10.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/raid10.h b/drivers/md/raid10.h
index 1054cf60234..157d69e83ff 100644
--- a/drivers/md/raid10.h
+++ b/drivers/md/raid10.h
@@ -33,6 +33,11 @@ struct r10conf {
* far_offset, in which case it is
* 1 stripe.
*/
+ int far_set_size; /* The number of devices in a set,
+ * where a 'set' are devices that
+ * contain far/offset copies of
+ * each other.
+ */
int chunk_shift; /* shift from chunks to sectors */
sector_t chunk_mask;
} prev, geo;