From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 01/12] add list_is_singular
Date: Wed, 15 Feb 2012 09:22:34 +0100 [thread overview]
Message-ID: <1329294165-12089-2-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1329294165-12089-1-git-send-email-s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
include/linux/list.h | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/include/linux/list.h b/include/linux/list.h
index 15ed499..5ae90b4 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -210,6 +210,15 @@ static inline int list_empty_careful(const struct list_head *head)
return (next == head) && (next == head->prev);
}
+/**
+ * list_is_singular - tests whether a list has just one entry.
+ * @head: the list to test.
+ */
+static inline int list_is_singular(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)
{
--
1.7.9
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next prev parent reply other threads:[~2012-02-15 8:22 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-15 8:22 cleanup filesystem core Sascha Hauer
2012-02-15 8:22 ` Sascha Hauer [this message]
2012-02-15 8:22 ` [PATCH 02/12] dos partitions: Do not register as fixed partitions Sascha Hauer
2012-02-15 8:22 ` [PATCH 03/12] fs: Store mtab entries in list Sascha Hauer
2012-02-15 8:22 ` [PATCH 04/12] fs: make locally used function get_mtab_entry_by_path static Sascha Hauer
2012-02-15 8:22 ` [PATCH 05/12] fs: Store mtab path in allocated string Sascha Hauer
2012-02-15 8:22 ` [PATCH 06/12] fs: remove unused function fsdev_get_mountpoint Sascha Hauer
2012-02-15 8:22 ` [PATCH 07/12] fs: simplify get_mtab_entry_by_path Sascha Hauer
2012-02-15 8:22 ` [PATCH 08/12] fs: remove only once used variable Sascha Hauer
2012-02-15 8:22 ` [PATCH 09/12] fs: remove fs devices list Sascha Hauer
2012-02-15 8:22 ` [PATCH 10/12] fs: put fs devices on its own bus Sascha Hauer
2012-02-15 8:22 ` [PATCH 11/12] fs: allow to mount on subdirectories Sascha Hauer
2012-02-15 8:22 ` [PATCH 12/12] devices: unregister children when unregistering a device Sascha Hauer
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