The patch titled
lists: add list splice tail
has been added to the -mm tree. Its filename is
lists-add-list-splice-tail.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: lists: add list splice tail
From: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Add a list_splice_tail variant of list_splice.
Signed-off-by: Con Kolivas <kernel@xxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Cc: "Siddha, Suresh B" <suresh.b.siddha@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/list.h | 42 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff -puN include/linux/list.h~lists-add-list-splice-tail include/linux/list.h
--- a/include/linux/list.h~lists-add-list-splice-tail
+++ a/include/linux/list.h
@@ -333,6 +333,20 @@ static inline void __list_splice(struct
at->prev = last;
}
+static inline void __list_splice_tail(struct list_head *list,
+ struct list_head *head)
+{
+ struct list_head *first = list->next;
+ struct list_head *last = list->prev;
+ struct list_head *at = head->prev;
+
+ first->prev = at;
+ at->next = first;
+
+ last->next = head;
+ head->prev = last;
+}
+
/**
* list_splice - join two lists
* @list: the new list to add.
@@ -345,6 +359,18 @@ static inline void list_splice(struct li
}
/**
+ * list_splice_tail - join two lists at one's tail
+ * @list: the new list to add.
+ * @head: the place to add it in the first list.
+ */
+static inline void list_splice_tail(struct list_head *list,
+ struct list_head *head)
+{
+ if (!list_empty(list))
+ __list_splice_tail(list, head);
+}
+
+/**
* list_splice_init - join two lists and reinitialise the emptied list.
* @list: the new list to add.
* @head: the place to add it in the first list.
@@ -417,6 +443,22 @@ static inline void list_splice_init_rcu(
}
/**
+ * list_splice_tail_init - join 2 lists at one's tail & reinitialise emptied
+ * @list: the new list to add.
+ * @head: the place to add it in the first list.
+ *
+ * The list at @list is reinitialised
+ */
+static inline void list_splice_tail_init(struct list_head *list,
+ struct list_head *head)
+{
+ if (!list_empty(list)) {
+ __list_splice_tail(list, head);
+ INIT_LIST_HEAD(list);
+ }
+}
+
+/**
* list_entry - get the struct for this entry
* @ptr: the &struct list_head pointer.
* @type: the type of the struct this is embedded in.
_
Patches currently in -mm which might be from a.p.zijlstra@xxxxxxxxx are
nfs-fix-congestion-control-v4.patch
lumpy-reclaim-v4.patch
exec-fix-remove_arg_zero-add-comment.patch
lists-add-list-splice-tail.patch
nfs-fix-congestion-control-use-atomic_longs.patch
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