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author | Sascha Hauer <s.hauer@pengutronix.de> | 2012-02-11 14:41:08 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-02-17 10:27:15 +0100 |
commit | 6ca081d53dde57475600a9ea65856c6fbbdfd9f0 (patch) | |
tree | 009817d5109697c8e68e55922e67dcbdaf78c854 /include | |
parent | 4b06ebc820aa9a46dfb73c7050b073d8224b4b70 (diff) | |
download | barebox-6ca081d53dde57475600a9ea65856c6fbbdfd9f0.tar.gz barebox-6ca081d53dde57475600a9ea65856c6fbbdfd9f0.tar.xz |
add list_is_singular
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
-rw-r--r-- | 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 1a4cbc49a2..eb1b640e28 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) { |