#ifndef _LINUX_LIST_H
#define _LINUX_LIST_H
-#ifdef __KERNEL__
-
#include <linux/stddef.h>
#include <linux/poison.h>
#include <linux/prefetch.h>
return (next == head) && (next == head->prev);
}
-static inline void __list_splice(struct list_head *list,
+/**
+ * list_is_singular - tests whether a list has just one entry.
+ * @head: the list to test.
+ */
+static inline int list_is_singular(const struct list_head *head)
+{
+ return !list_empty(head) && (head->next == head->prev);
+}
+
+static inline void __list_splice(const struct list_head *list,
struct list_head *head)
{
struct list_head *first = list->next;
* @list: the new list to add.
* @head: the place to add it in the first list.
*/
-static inline void list_splice(struct list_head *list, struct list_head *head)
+static inline void list_splice(const struct list_head *list,
+ struct list_head *head)
{
if (!list_empty(list))
__list_splice(list, head);
({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
pos = rcu_dereference(pos->next))
-#else
-#warning "don't include kernel headers in userspace"
-#endif /* __KERNEL__ */
#endif