rculist.h: Add list_tail_rcu() (afa47fdf) · Commits · 戴 / test

This patch adds the macro list_tail_rcu() and documents it. Signed-off-by:

include/linux/rculist.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -40,6 +40,16 @@ static inline void INIT_LIST_HEAD_RCU(struct list_head *list)
		*/
		#define list_next_rcu(list) (((struct list_head __rcu *)(&(list)->next)))

		/**
		* list_tail_rcu - returns the prev pointer of the head of the list
		* @head: the head of the list
		*
		* Note: This should only be used with the list header, and even then
		* only if list_del() and similar primitives are not also used on the
		* list header.
		*/
		#define list_tail_rcu(head) (((struct list_head __rcu *)(&(head)->prev)))

		/*
		* Check during list traversal that we are within an RCU reader
		*/