feat: vfs - path walking and dnode caching.

[lunaix-os.git] / lunaix-os / includes / lunaix / ds / llist.h

diff --git a/lunaix-os/includes/lunaix/ds/llist.h b/lunaix-os/includes/lunaix/ds/llist.h
index 5afc36ad43b48ec822919a7dbb6a94008b130e44..9af9dd1fba4ebe90fe86090e3e72438492cea95e 100644 (file)
--- a/lunaix-os/includes/lunaix/ds/llist.h
+++ b/lunaix-os/includes/lunaix/ds/llist.h
@@ -87,4 +87,27 @@ llist_empty(struct llist_header* elem)
          &pos->member != (head);                                               \
          pos = n, n = list_entry(n->member.next, typeof(*n), member))
 
          &pos->member != (head);                                               \
          pos = n, n = list_entry(n->member.next, typeof(*n), member))
 

+struct hlist_node
+{
+    struct hlist_node *next, **pprev;
+};
+
+static inline void
+hlist_del(struct hlist_node* node)
+{
+    *node->pprev = node->next;
+    node->next = 0;
+    node->pprev = 0;
+}
+
+static inline void
+hlist_add(struct hlist_node** head, struct hlist_node* node)
+{
+    node->next = *head;
+    if (*head) {
+        (*head)->pprev = &node->next;
+    }
+    node->pprev = head;
+    *head = node;
+}

 #endif /* __LUNAIX_LLIST_H */
 #endif /* __LUNAIX_LLIST_H */