klist: implement klist_add_{after|before}()

[linux-2.6] / include / linux / klist.h

diff --git a/include/linux/klist.h b/include/linux/klist.h
index 74071254c9d38c348b0bba649d9e8c9ebb4cb049..b49385f13419a8451d44468819b7d987c4801bb6 100644 (file)
--- a/include/linux/klist.h
+++ b/include/linux/klist.h
@@ -25,6 +25,14 @@ struct klist {
        void                    (*put)(struct klist_node *);
 };
 
+#define KLIST_INIT(_name, _get, _put)                                  \
+       { .k_lock       = __SPIN_LOCK_UNLOCKED(_name.k_lock),           \
+         .k_list       = LIST_HEAD_INIT(_name.k_list),                 \
+         .get          = _get,                                         \
+         .put          = _put, }
+
+#define DEFINE_KLIST(_name, _get, _put)                                        \
+       struct klist _name = KLIST_INIT(_name, _get, _put)
 
 extern void klist_init(struct klist * k, void (*get)(struct klist_node *),
                       void (*put)(struct klist_node *));
@@ -38,6 +46,8 @@ struct klist_node {
 
 extern void klist_add_tail(struct klist_node * n, struct klist * k);
 extern void klist_add_head(struct klist_node * n, struct klist * k);
+extern void klist_add_after(struct klist_node *n, struct klist_node *pos);
+extern void klist_add_before(struct klist_node *n, struct klist_node *pos);
 
 extern void klist_del(struct klist_node * n);
 extern void klist_remove(struct klist_node * n);