neigh: reorder fields in struct neighbour
On 64bit arches, there are two 32bit holes that we can remove.
sizeof(struct neighbour) shrinks from 0xf8 to 0xf0 bytes
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 242879b..7d08fd1 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -94,7 +94,7 @@
struct neighbour *next;
struct neigh_table *tbl;
struct neigh_parms *parms;
- struct net_device *dev;
+ struct net_device *dev;
unsigned long used;
unsigned long confirmed;
unsigned long updated;
@@ -102,11 +102,11 @@
__u8 nud_state;
__u8 type;
__u8 dead;
+ atomic_t refcnt;
atomic_t probes;
rwlock_t lock;
unsigned char ha[ALIGN(MAX_ADDR_LEN, sizeof(unsigned long))];
struct hh_cache *hh;
- atomic_t refcnt;
int (*output)(struct sk_buff *skb);
struct sk_buff_head arp_queue;
struct timer_list timer;
@@ -163,7 +163,7 @@
atomic_t entries;
rwlock_t lock;
unsigned long last_rand;
- struct kmem_cache *kmem_cachep;
+ struct kmem_cache *kmem_cachep;
struct neigh_statistics __percpu *stats;
struct neighbour **hash_buckets;
unsigned int hash_mask;