[PATCH] list_for_each_entry

Rusty Russell (rusty@rustcorp.com.au)
Wed, 28 Aug 2002 11:52:00 +1000


List iteration pain removal patch.

Marcelo, Linus, please apply.
Rusty.

--
  Anyone who quotes me in their sig is an idiot. -- Rusty Russell.

Name: list_for_each_entry patch Author: Rusty Russell Status: Trivial

D: This adds list_for_each_entry, which is the equivalent of D: list_for_each and list_entry, except only one variable is needed.

diff -urpN --exclude TAGS -X /home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal .5652-linux-2.5.31/include/linux/list.h .5652-linux-2.5.31.updated/include/linux/list.h --- .5652-linux-2.5.31/include/linux/list.h 2002-08-02 11:15:10.000000000 +1000 +++ .5652-linux-2.5.31.updated/include/linux/list.h 2002-08-22 10:38:52.000000000 +1000 @@ -211,6 +211,19 @@ static inline void list_splice_init(list for (pos = (head)->next, n = pos->next; pos != (head); \ pos = n, n = pos->next) +/** + * list_for_each_entry - iterate over list of given type + * @pos: the type * to use as a loop counter. + * @head: the head for your list. + * @member: the name of the list_struct within the struct. + */ +#define list_for_each_entry(pos, head, member) \ + for (pos = list_entry((head)->next, typeof(*pos), member), \ + prefetch(pos->member.next); \ + &pos->member != (head); \ + pos = list_entry(pos->member.next, typeof(*pos), member), \ + prefetch(pos->member.next)) + #endif /* __KERNEL__ || _LVM_H_INCLUDE */ #endif - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/