diff options
Diffstat (limited to 'include/linux/list_nulls.h')
| -rw-r--r-- | include/linux/list_nulls.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/list_nulls.h b/include/linux/list_nulls.h index 5d10ae364b5e..f266661d2666 100644 --- a/include/linux/list_nulls.h +++ b/include/linux/list_nulls.h @@ -1,6 +1,9 @@ #ifndef _LINUX_LIST_NULLS_H #define _LINUX_LIST_NULLS_H +#include <linux/poison.h> +#include <linux/const.h> + /* * Special version of lists, where end of list is not a NULL pointer, * but a 'nulls' marker, which can have many different values. @@ -21,8 +24,9 @@ struct hlist_nulls_head { struct hlist_nulls_node { struct hlist_nulls_node *next, **pprev; }; +#define NULLS_MARKER(value) (1UL | (((long)value) << 1)) #define INIT_HLIST_NULLS_HEAD(ptr, nulls) \ - ((ptr)->first = (struct hlist_nulls_node *) (1UL | (((long)nulls) << 1))) + ((ptr)->first = (struct hlist_nulls_node *) NULLS_MARKER(nulls)) #define hlist_nulls_entry(ptr, type, member) container_of(ptr,type,member) /** |