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Subject[PATCH] list: add list_last_entry macros
Handy to get last item in a list. Also corrected parameter name for
list_first_entry.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>

diff --git a/include/linux/list.h b/include/linux/list.h
index 3a54266..e10862e 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -352,14 +352,25 @@ static inline void list_splice_tail_init(struct list_head *list,

/**
* list_first_entry - get the first element from a list
- * @ptr: the list head to take the element from.
+ * @head: 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)
+#define list_first_entry(head, type, member) \
+ list_entry((head)->next, type, member)
+
+/**
+ * list_last_entry - get the last element from a list
+ * @head: 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_last_entry(head, type, member) \
+ list_entry((head)->prev, type, member)

/**
* list_for_each - iterate over a list
diff --git a/include/linux/rculist.h b/include/linux/rculist.h
index 2dea94f..2cfa99f 100644
--- a/include/linux/rculist.h
+++ b/include/linux/rculist.h
@@ -229,7 +229,7 @@ static inline void list_splice_init_rcu(struct list_head *list,

/**
* list_first_entry_rcu - get the first element from a list
- * @ptr: the list head to take the element from.
+ * @head: 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.
*
@@ -238,8 +238,23 @@ static inline void list_splice_init_rcu(struct list_head *list,
* This primitive may safely run concurrently with the _rcu list-mutation
* primitives such as list_add_rcu() as long as it's guarded by rcu_read_lock().
*/
-#define list_first_entry_rcu(ptr, type, member) \
- list_entry_rcu((ptr)->next, type, member)
+#define list_first_entry_rcu(head, type, member) \
+ list_entry_rcu((head)->next, type, member)
+
+/**
+ * list_last_entry_rcu - get the last element from a list
+ * @head: 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.
+ *
+ * This primitive may safely run concurrently with the _rcu list-mutation
+ * primitives such as list_add_rcu() as long as it's guarded by rcu_read_lock().
+ */
+
+#define list_last_entry_rcu(head, type, member) \
+ list_entry_rcu((head)->prev, type, member)

/**
* list_for_each_entry_rcu - iterate over rcu list of given type

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