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Date: Sat, 13 Jun 2009 15:09:41 +0200 (MEST) From: Patrick McHardy <kaber@...sh.net> To: davem@...emloft.net Cc: netdev@...r.kernel.org, Patrick McHardy <kaber@...sh.net>, netfilter-devel@...r.kernel.org Subject: list_nulls 05/07: add hlist_nulls_add_head and hlist_nulls_del commit d219dce76c64f2c883dad0537fa09a56d5ff0a10 Author: Pablo Neira Ayuso <pablo@...filter.org> Date: Sat Jun 13 12:28:57 2009 +0200 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@...filter.org> Acked-by: Eric Dumazet <eric.dumazet@...il.com> Signed-off-by: Patrick McHardy <kaber@...sh.net> diff --git a/include/linux/list_nulls.h b/include/linux/list_nulls.h index 93150ec..5d10ae3 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. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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