From 241e3218a72cd099bd635132f7efd354fd222a6f Mon Sep 17 00:00:00 2001
From: James Bottomley <James.Bottomley@suse.de>
Date: Thu, 1 Jul 2010 21:46:36 +0200
Subject: [PATCH] --- yaml --- r: 202543 b: refs/heads/master c:
 12e4d0cc2e0a776a526c93bb2fcb9267abc6e0b1 h: refs/heads/master i:   202541:
 5b87db47505d743351dfce165d02e2e5ddd25252   202539:
 1a1312eb04d72a5a1f5f88fdc9191b4daa5b36e2   202535:
 12fe4536413dfdc6be8c51891bbfeeef7223c467   202527:
 98d28766d006d9faed1eed6457af9e23a6a1fa6c v: v3

---
 [refs]                      |  2 +-
 trunk/include/linux/plist.h | 29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index f6ca8947111a..a46dd4a0c88e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c125e96f044427f38d106fab7bc5e4a5e6a18262
+refs/heads/master: 12e4d0cc2e0a776a526c93bb2fcb9267abc6e0b1
diff --git a/trunk/include/linux/plist.h b/trunk/include/linux/plist.h
index 6898985e7b38..7254eda078e5 100644
--- a/trunk/include/linux/plist.h
+++ b/trunk/include/linux/plist.h
@@ -259,6 +259,23 @@ static inline int plist_node_empty(const struct plist_node *node)
 	container_of(plist_first(head), type, member)
 #endif
 
+/**
+ * plist_last_entry - get the struct for the last entry
+ * @head:	the &struct plist_head pointer
+ * @type:	the type of the struct this is embedded in
+ * @member:	the name of the list_struct within the struct
+ */
+#ifdef CONFIG_DEBUG_PI_LIST
+# define plist_last_entry(head, type, member)	\
+({ \
+	WARN_ON(plist_head_empty(head)); \
+	container_of(plist_last(head), type, member); \
+})
+#else
+# define plist_last_entry(head, type, member)	\
+	container_of(plist_last(head), type, member)
+#endif
+
 /**
  * plist_first - return the first node (and thus, highest priority)
  * @head:	the &struct plist_head pointer
@@ -271,4 +288,16 @@ static inline struct plist_node *plist_first(const struct plist_head *head)
 			  struct plist_node, plist.node_list);
 }
 
+/**
+ * plist_last - return the last node (and thus, lowest priority)
+ * @head:	the &struct plist_head pointer
+ *
+ * Assumes the plist is _not_ empty.
+ */
+static inline struct plist_node *plist_last(const struct plist_head *head)
+{
+	return list_entry(head->node_list.prev,
+			  struct plist_node, plist.node_list);
+}
+
 #endif