The patch titled
list.h: add list_singleton
has been added to the -mm tree. Its filename is
listh-add-list_singleton.patch
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See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: list.h: add list_singleton
From: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Add list_singleton to check a list has just one entry.
list_singleton is useful to check whether a list_head which have been
temporarily allocated for listing objects can be released or not.
Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/list.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff -puN include/linux/list.h~listh-add-list_singleton include/linux/list.h
--- a/include/linux/list.h~listh-add-list_singleton
+++ a/include/linux/list.h
@@ -211,6 +211,15 @@ static inline int list_empty_careful(con
return (next == head) && (next == head->prev);
}
+/**
+ * list_singleton - tests whether a list has just one entry.
+ * @head: the list to test.
+ */
+static inline int list_singleton(const struct list_head *head)
+{
+ return !list_empty(head) && (head->next == head->prev);
+}
+
static inline void __list_splice(struct list_head *list,
struct list_head *head)
{
_
Patches currently in -mm which might be from mhiramat@xxxxxxxxxx are
kprobes-kprobe-booster-for-ia64.patch
kprobes-kprobe-booster-for-ia64-fix.patch
listh-add-list_singleton.patch
kprobes-add-unregister_kprobes-for-batch-registration.patch
kprobes-add-unregister_kretprobes-for-batch-registration.patch
kprobes-add-unregister_jprobes-for-batch-registration.patch
kprobes-update-document-about-batch-registration.patch
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