author: Tejun Heo <htejun@gmail.com> 2008-04-22 18:58:46 +0900
committer: Greg Kroah-Hartman <gregkh@suse.de> 2008-04-30 16:52:47 -0700
commit: 93dd40013f4f7f4b18d19d0d77855f025bcc57c3
parent: 1da43e4a9ee942c9c967dbe8839476571df0c3ed
Commit Summary:
Diffstat:
1 file changed, 29 insertions, 0 deletions
diff --git a/lib/klist.c b/lib/klist.c
index 120bd175aa78..ebba9488046e 100644
--- a/lib/klist.c
+++ b/lib/klist.c
@@ -120,6 +120,39 @@ void klist_add_tail(struct klist_node * n, struct klist * k)
EXPORT_SYMBOL_GPL(klist_add_tail);
+/**
+ * klist_add_after - Init a klist_node and add it after an existing node
+ * @n: node we're adding.
+ * @pos: node to put @n after
+ */
+void klist_add_after(struct klist_node *n, struct klist_node *pos)
+{
+ struct klist *k = pos->n_klist;
+
+ klist_node_init(k, n);
+ spin_lock(&k->k_lock);
+ list_add(&n->n_node, &pos->n_node);
+ spin_unlock(&k->k_lock);
+}
+EXPORT_SYMBOL_GPL(klist_add_after);
+
+/**
+ * klist_add_before - Init a klist_node and add it before an existing node
+ * @n: node we're adding.
+ * @pos: node to put @n after
+ */
+void klist_add_before(struct klist_node *n, struct klist_node *pos)
+{
+ struct klist *k = pos->n_klist;
+
+ klist_node_init(k, n);
+ spin_lock(&k->k_lock);
+ list_add_tail(&n->n_node, &pos->n_node);
+ spin_unlock(&k->k_lock);
+}
+EXPORT_SYMBOL_GPL(klist_add_before);
+
+
static void klist_release(struct kref * kref)
{
struct klist_node * n = container_of(kref, struct klist_node, n_ref);