batman-adv: Store modification counter via hash helpers (05abd7bc) · Commits · 戴 / test

net/batman-adv/hash.c

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -32,6 +32,8 @@ static void batadv_hash_init(struct batadv_hashtable *hash)
	INIT_HLIST_HEAD(&hash->table[i]);		INIT_HLIST_HEAD(&hash->table[i]);
	spin_lock_init(&hash->list_locks[i]);		spin_lock_init(&hash->list_locks[i]);
	}		}

			atomic_set(&hash->generation, 0);
	}		}

	/**		/**

+6 −0

Original line number	Original line	Diff line number	Diff line
	@@ -21,6 +21,7 @@

	#include "main.h"		#include "main.h"

			#include <linux/atomic.h>
	#include <linux/compiler.h>		#include <linux/compiler.h>
	#include <linux/list.h>		#include <linux/list.h>
	#include <linux/rculist.h>		#include <linux/rculist.h>
	@@ -58,6 +59,9 @@ struct batadv_hashtable {

	/** @size: size of hashtable */		/** @size: size of hashtable */
	u32 size;		u32 size;

			/** @generation: current (generation) sequence number */
			atomic_t generation;
	};		};

	/* allocates and clears the hash */		/* 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 */		/* no duplicate found in list, add new element */
	hlist_add_head_rcu(data_node, head);		hlist_add_head_rcu(data_node, head);
			atomic_inc(&hash->generation);

	ret = 0;		ret = 0;

	@@ -154,6 +159,7 @@ static inline void batadv_hash_remove(struct batadv_hashtable hash,

	data_save = node;		data_save = node;
	hlist_del_rcu(node);		hlist_del_rcu(node);
			atomic_inc(&hash->generation);
	break;		break;
	}		}
	spin_unlock_bh(&hash->list_locks[index]);		spin_unlock_bh(&hash->list_locks[index]);