md/linear: avoid corrupting structure while waiting for rcu_free to complete.

I don't know what I was thinking putting 'rcu' after a dynamically
sized array!  The array could still be in use when we call rcu_free()
(That is the point) so we mustn't corrupt it.

Cc: stable@kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/linear.h b/drivers/md/linear.h
index 0ce29b61605a..2f2da05b2ce9 100644
--- a/drivers/md/linear.h
+++ b/drivers/md/linear.h
@@ -10,9 +10,9 @@ typedef struct dev_info dev_info_t;
 
 struct linear_private_data
 {
+        struct rcu_head         rcu;
         sector_t                array_sectors;
         dev_info_t              disks[0];
-        struct rcu_head         rcu;
 };