[PATCH v2 2/3] IB/core: Shuffle locks in ib_port_data to save memory

[Anand Khoje]

pahole shows two 4-byte holes in struct ib_port_data after
pkey_list_lock and netdev_lock respectively.

Shuffling the netdev_lock to be after pkey_list_lock, this 
shaves off eight bytes from the struct.

Suggested-by: Haakon Bugge <haakon.bugge@xxxxxxxxxx>
Signed-off-by: Anand Khoje <anand.a.khoje@xxxxxxxxxx>
---
 include/rdma/ib_verbs.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 7e2f369..41cbec5 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2175,11 +2175,13 @@ struct ib_port_data {
 	struct ib_port_immutable immutable;
 
 	spinlock_t pkey_list_lock;
+
+	spinlock_t netdev_lock;
+
 	struct list_head pkey_list;
 
 	struct ib_port_cache cache;
 
-	spinlock_t netdev_lock;
 	struct net_device __rcu *netdev;
 	struct hlist_node ndev_hash_link;
 	struct rdma_port_counter port_counter;
-- 
1.8.3.1