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[Xen-devel] [PATCH] linux-2.6.18: add list_first_entry()
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|---|---|
| Subject: | [Xen-devel] [PATCH] linux-2.6.18: add list_first_entry() |
| From: | "Jan Beulich" <JBeulich@xxxxxxxxxx> |
| Date: | Wed, 03 Nov 2010 14:32:43 +0000 |
| Delivery-date: | Wed, 03 Nov 2010 07:33:24 -0700 |
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... to address build failure after c/s 1045:bd2bf7a84686.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -354,6 +354,17 @@ static inline void list_splice_init(stru
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.
* @head: the head for your list.
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