[PATCH] md: allow a linear array to have drives added while active
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/linux/raid/linear.h b/include/linux/raid/linear.h
index 7eaf290..ba15469 100644
--- a/include/linux/raid/linear.h
+++ b/include/linux/raid/linear.h
@@ -13,8 +13,10 @@
struct linear_private_data
{
+ struct linear_private_data *prev; /* earlier version */
dev_info_t **hash_table;
sector_t hash_spacing;
+ sector_t array_size;
int preshift; /* shift before dividing by hash_spacing */
dev_info_t disks[0];
};