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seq_file: add RCU versions of new hlist/list iterators (v3)

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Many usages of seq_file use RCU protected lists, so non RCU
iterators will not work safely.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2010-02-22 07:57:17 +00:00 • committed by David S. Miller
parent 35e2da46d2
commit 1cc523271e
3 changed files with 86 additions and 3 deletions
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13
include/linux/seq_file.h
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@ -140,10 +140,17 @@ extern struct list_head *seq_list_next(void *v, struct list_head *head,
*/
extern struct hlist_node *seq_hlist_start(struct hlist_head *head,
loff_t pos);
loff_t pos);
extern struct hlist_node *seq_hlist_start_head(struct hlist_head *head,
loff_t pos);
loff_t pos);
extern struct hlist_node *seq_hlist_next(void *v, struct hlist_head *head,
loff_t *ppos);
loff_t *ppos);
extern struct hlist_node *seq_hlist_start_rcu(struct hlist_head *head,
loff_t pos);
extern struct hlist_node *seq_hlist_start_head_rcu(struct hlist_head *head,
loff_t pos);
extern struct hlist_node *seq_hlist_next_rcu(void *v,
struct hlist_head *head,
loff_t *ppos);
#endif