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Diffstat (limited to 'net/batman-adv/hash.h')
-rw-r--r--net/batman-adv/hash.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/batman-adv/hash.h b/net/batman-adv/hash.h
index 9490a7ca2ba6..0e36fa1c7c3e 100644
--- a/net/batman-adv/hash.h
+++ b/net/batman-adv/hash.h
@@ -21,6 +21,7 @@
#include "main.h"
+#include <linux/atomic.h>
#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/rculist.h>
@@ -58,6 +59,9 @@ struct batadv_hashtable {
/** @size: size of hashtable */
u32 size;
+
+ /** @generation: current (generation) sequence number */
+ atomic_t generation;
};
/* allocates and clears the hash */
@@ -112,6 +116,7 @@ static inline int batadv_hash_add(struct batadv_hashtable *hash,
/* no duplicate found in list, add new element */
hlist_add_head_rcu(data_node, head);
+ atomic_inc(&hash->generation);
ret = 0;
@@ -154,6 +159,7 @@ static inline void *batadv_hash_remove(struct batadv_hashtable *hash,
data_save = node;
hlist_del_rcu(node);
+ atomic_inc(&hash->generation);
break;
}
spin_unlock_bh(&hash->list_locks[index]);