sysmo-bts
/
barebox
9
0
Fork 0
Code Releases Activity

add list_is_singular 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2012-02-11 14:41:08 +01:00
parent 4b06ebc820
commit 6ca081d53d
1 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
include/linux/list.h
View File

@ -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)
{