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yaml
---
r: 9903
b: refs/heads/master
c: b24d18a
h: refs/heads/master
i:
  9901: 4de8184
  9899: c5af920
  9895: adc0c52
  9887: 5dfa2c0
v: v3
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Herbert Xu authored and Linus Torvalds committed Oct 17, 2005
1 parent 254ab28 commit 27dd995
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Showing 2 changed files with 23 additions and 18 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 3d80636a0d5f056ffc26472d05b6027a7a9f6e1c
refs/heads/master: b24d18aa743dad0c42918157c5d717686269d3a8
39 changes: 22 additions & 17 deletions trunk/include/linux/list.h
Original file line number Diff line number Diff line change
Expand Up @@ -442,12 +442,14 @@ static inline void list_splice_init(struct list_head *list,
* as long as the traversal is guarded by rcu_read_lock().
*/
#define list_for_each_rcu(pos, head) \
for (pos = (head)->next; prefetch(pos->next), pos != (head); \
pos = rcu_dereference(pos->next))
for (pos = (head)->next; \
prefetch(rcu_dereference(pos)->next), pos != (head); \
pos = pos->next)

#define __list_for_each_rcu(pos, head) \
for (pos = (head)->next; pos != (head); \
pos = rcu_dereference(pos->next))
for (pos = (head)->next; \
rcu_dereference(pos) != (head); \
pos = pos->next)

/**
* list_for_each_safe_rcu - iterate over an rcu-protected list safe
Expand All @@ -461,8 +463,9 @@ static inline void list_splice_init(struct list_head *list,
* as long as the traversal is guarded by rcu_read_lock().
*/
#define list_for_each_safe_rcu(pos, n, head) \
for (pos = (head)->next, n = pos->next; pos != (head); \
pos = rcu_dereference(n), n = pos->next)
for (pos = (head)->next; \
n = rcu_dereference(pos)->next, pos != (head); \
pos = n)

/**
* list_for_each_entry_rcu - iterate over rcu list of given type
Expand All @@ -474,11 +477,11 @@ static inline void list_splice_init(struct list_head *list,
* the _rcu list-mutation primitives such as list_add_rcu()
* as long as the traversal is guarded by rcu_read_lock().
*/
#define list_for_each_entry_rcu(pos, head, member) \
for (pos = list_entry((head)->next, typeof(*pos), member); \
prefetch(pos->member.next), &pos->member != (head); \
pos = rcu_dereference(list_entry(pos->member.next, \
typeof(*pos), member)))
#define list_for_each_entry_rcu(pos, head, member) \
for (pos = list_entry((head)->next, typeof(*pos), member); \
prefetch(rcu_dereference(pos)->member.next), \
&pos->member != (head); \
pos = list_entry(pos->member.next, typeof(*pos), member))


/**
Expand All @@ -492,8 +495,9 @@ static inline void list_splice_init(struct list_head *list,
* as long as the traversal is guarded by rcu_read_lock().
*/
#define list_for_each_continue_rcu(pos, head) \
for ((pos) = (pos)->next; prefetch((pos)->next), (pos) != (head); \
(pos) = rcu_dereference((pos)->next))
for ((pos) = (pos)->next; \
prefetch(rcu_dereference((pos))->next), (pos) != (head); \
(pos) = (pos)->next)

/*
* Double linked lists with a single pointer list head.
Expand Down Expand Up @@ -696,8 +700,9 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev,
pos = n)

#define hlist_for_each_rcu(pos, head) \
for ((pos) = (head)->first; pos && ({ prefetch((pos)->next); 1; }); \
(pos) = rcu_dereference((pos)->next))
for ((pos) = (head)->first; \
rcu_dereference((pos)) && ({ prefetch((pos)->next); 1; }); \
(pos) = (pos)->next)

/**
* hlist_for_each_entry - iterate over list of given type
Expand Down Expand Up @@ -762,9 +767,9 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev,
*/
#define hlist_for_each_entry_rcu(tpos, pos, head, member) \
for (pos = (head)->first; \
pos && ({ prefetch(pos->next); 1;}) && \
rcu_dereference(pos) && ({ prefetch(pos->next); 1;}) && \
({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
pos = rcu_dereference(pos->next))
pos = pos->next)

#else
#warning "don't include kernel headers in userspace"
Expand Down

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