diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2009-06-13 12:28:57 +0200 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2009-06-13 12:28:57 +0200 |
| commit | d219dce76c64f2c883dad0537fa09a56d5ff0a10 (patch) | |
| tree | 712ae332fbe5ae56524bb5afe2ee09960bbb74ee | |
| parent | 9858a3ae1d4b390fbaa9c30b83cb66d861b76294 (diff) | |
list_nulls: add hlist_nulls_add_head and hlist_nulls_del
This patch adds the hlist_nulls_add_head() function which is
based on hlist_nulls_add_head_rcu() but without the use of
rcu_assign_pointer(). It also adds hlist_nulls_del which is
exactly the same like hlist_nulls_del_rcu().
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
| -rw-r--r-- | include/linux/list_nulls.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/list_nulls.h b/include/linux/list_nulls.h index 93150ecf3ea..5d10ae364b5 100644 --- a/include/linux/list_nulls.h +++ b/include/linux/list_nulls.h @@ -56,6 +56,18 @@ static inline int hlist_nulls_empty(const struct hlist_nulls_head *h) return is_a_nulls(h->first); } +static inline void hlist_nulls_add_head(struct hlist_nulls_node *n, + struct hlist_nulls_head *h) +{ + struct hlist_nulls_node *first = h->first; + + n->next = first; + n->pprev = &h->first; + h->first = n; + if (!is_a_nulls(first)) + first->pprev = &n->next; +} + static inline void __hlist_nulls_del(struct hlist_nulls_node *n) { struct hlist_nulls_node *next = n->next; @@ -65,6 +77,12 @@ static inline void __hlist_nulls_del(struct hlist_nulls_node *n) next->pprev = pprev; } +static inline void hlist_nulls_del(struct hlist_nulls_node *n) +{ + __hlist_nulls_del(n); + n->pprev = LIST_POISON2; +} + /** * hlist_nulls_for_each_entry - iterate over list of given type * @tpos: the type * to use as a loop cursor. |