linux-2.6.18: add list_first_entry()

... to address build failure after c/s 1045:bd2bf7a84686.

Signed-off-by: Jan Beulich <jbeulich@novell.com>

diff --git a/include/linux/list.h b/include/linux/list.h
index 65a5b5ceda4947d1478bba79abbda826963d128e..3beb546ee4db4cf940f5312dc3208cfe55145570 100644 (file)
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -353,6 +353,17 @@ static inline void list_splice_init(struct list_head *list,
 #define list_entry(ptr, type, member) \
        container_of(ptr, type, member)
 
+/**
+ * list_first_entry - get the first element from a list
+ * @ptr:       the list head to take the element from.
+ * @type:      the type of the struct this is embedded in.
+ * @member:    the name of the list_struct within the struct.
+ *
+ * Note, that list is expected to be not empty.
+ */
+#define list_first_entry(ptr, type, member) \
+       list_entry((ptr)->next, type, member)
+
 /**
  * list_for_each       -       iterate over a list
  * @pos:       the &struct list_head to use as a loop cursor.