[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>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/raid/linear.h b/include/linux/raid/linear.h
index 7eaf290e10e7..ba15469daf11 100644
--- a/include/linux/raid/linear.h
+++ b/include/linux/raid/linear.h
@@ -13,8 +13,10 @@ typedef struct dev_info dev_info_t;
 
 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];
 };