md: linear: Make array_size sector-based and rename it to array_sectors.

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/include/linux/raid/linear.h b/include/linux/raid/linear.h
index ba15469..7e37511 100644
--- a/include/linux/raid/linear.h
+++ b/include/linux/raid/linear.h
@@ -16,7 +16,7 @@
 	struct linear_private_data *prev;	/* earlier version */
 	dev_info_t		**hash_table;
 	sector_t		hash_spacing;
-	sector_t		array_size;
+	sector_t		array_sectors;
 	int			preshift; /* shift before dividing by hash_spacing */
 	dev_info_t		disks[0];
 };