From 80d73629bfca732e6bb847708689c8a03933b963 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nils=20O=2E=20Sel=C3=A5sdal?= <noselasd@fiane.dyndns.org>
Date: Thu, 28 Nov 2013 20:01:25 +0100
Subject: [PATCH] add uc_tailq_link() and use it in uc_tailq_remove()

---
 include/ucore/tailq.h | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/include/ucore/tailq.h b/include/ucore/tailq.h
index 08a2d47..ab4f0e2 100644
--- a/include/ucore/tailq.h
+++ b/include/ucore/tailq.h
@@ -85,13 +85,20 @@ static UC_INLINE void uc_tailq_insert_head(struct TailQ *head, struct TailQ *ent
     uc_tailq_insert(entry, head, head->next);
 }
 
+/** Link the first and second entry together,
+ */
+static UC_INLINE void uc_tailq_link(struct TailQ *first, struct TailQ *second)
+{
+    first->next = second;
+    second->prev = first;
+}
+
 /** Remove the entry from the list it is part of.
  * (It *must* already be part of a list.
  */
 static UC_INLINE void uc_tailq_remove(struct TailQ *entry)
 {
-    entry->prev->next = entry->next;
-    entry->next->prev = entry->prev;
+    uc_tailq_link(entry->prev, entry->next);
 
 //help catch illegal use:
     entry->next = (void*)0x101;