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Diffstat (limited to 'include/linux/rbtree.h')
-rw-r--r--include/linux/rbtree.h16
1 files changed, 13 insertions, 3 deletions
diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h
index fb31765e935a..830c4992088d 100644
--- a/include/linux/rbtree.h
+++ b/include/linux/rbtree.h
@@ -31,6 +31,7 @@
#include <linux/kernel.h>
#include <linux/stddef.h>
+#include <linux/rcupdate.h>
struct rb_node {
unsigned long __rb_parent_color;
@@ -73,11 +74,11 @@ extern struct rb_node *rb_first_postorder(const struct rb_root *);
extern struct rb_node *rb_next_postorder(const struct rb_node *);
/* Fast replacement of a single node without remove/rebalance/add/rebalance */
-extern void rb_replace_node(struct rb_node *victim, struct rb_node *new,
+extern void rb_replace_node(struct rb_node *victim, struct rb_node *new,
struct rb_root *root);
-static inline void rb_link_node(struct rb_node * node, struct rb_node * parent,
- struct rb_node ** rb_link)
+static inline void rb_link_node(struct rb_node *node, struct rb_node *parent,
+ struct rb_node **rb_link)
{
node->__rb_parent_color = (unsigned long)parent;
node->rb_left = node->rb_right = NULL;
@@ -85,6 +86,15 @@ static inline void rb_link_node(struct rb_node * node, struct rb_node * parent,
*rb_link = node;
}
+static inline void rb_link_node_rcu(struct rb_node *node, struct rb_node *parent,
+ struct rb_node **rb_link)
+{
+ node->__rb_parent_color = (unsigned long)parent;
+ node->rb_left = node->rb_right = NULL;
+
+ rcu_assign_pointer(*rb_link, node);
+}
+
#define rb_entry_safe(ptr, type, member) \
({ typeof(ptr) ____ptr = (ptr); \
____ptr ? rb_entry(____ptr, type, member) : NULL; \