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list: introduce list_for_each_continue()

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As other *continue() helpers, this continues iteration from a given
position.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2019-11-29 00:11:54 +03:00 committed by Jens Axboe
parent 7d30a62102
commit 28ca0d6d39
1 changed files with 10 additions and 0 deletions
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include/linux/list.h
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@ -538,6 +538,16 @@ static inline void list_splice_tail_init(struct list_head *list,
#define list_for_each(pos, head) \
for (pos = (head)->next; pos != (head); pos = pos->next)
/**
* list_for_each_continue - continue iteration over a list
* @pos: the &struct list_head to use as a loop cursor.
* @head: the head for your list.
*
* Continue to iterate over a list, continuing after the current position.
*/
#define list_for_each_continue(pos, head) \
for (pos = pos->next; pos != (head); pos = pos->next)
/**
* list_for_each_prev - iterate over a list backwards
* @pos: the &struct list_head to use as a loop cursor.