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[PATCH] Remove hlist_for_each_rcu() API, convert existing use to hlist_for_each_entry_rcu

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Remove the hlist_for_each_rcu() API, which is used only in one place, and
is trivially converted to hlist_for_each_entry_rcu(), making the code
shorter and more readable.  Any out-of-tree uses may be similarly
converted.

Signed-off-by: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Paul E. McKenney
2005-11-07 00:59:17 -08:00
committed by Linus Torvalds
parent 9f46080c41
commit 665a7583f3
3 changed files with 8 additions and 17 deletions
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13
include/linux/list.h
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@@ -601,7 +601,7 @@ static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h)
* or hlist_del_rcu(), running on this same list.
* However, it is perfectly legal to run concurrently with
* the _rcu list-traversal primitives, such as
* hlist_for_each_rcu(), used to prevent memory-consistency
* hlist_for_each_entry_rcu(), used to prevent memory-consistency
* problems on Alpha CPUs. Regardless of the type of CPU, the
* list-traversal primitive must be guarded by rcu_read_lock().
*/
@@ -650,7 +650,7 @@ static inline void hlist_add_after(struct hlist_node *n,
* or hlist_del_rcu(), running on this same list.
* However, it is perfectly legal to run concurrently with
* the _rcu list-traversal primitives, such as
* hlist_for_each_rcu(), used to prevent memory-consistency
* hlist_for_each_entry_rcu(), used to prevent memory-consistency
* problems on Alpha CPUs.
*/
static inline void hlist_add_before_rcu(struct hlist_node *n,
@@ -675,7 +675,7 @@ static inline void hlist_add_before_rcu(struct hlist_node *n,
* or hlist_del_rcu(), running on this same list.
* However, it is perfectly legal to run concurrently with
* the _rcu list-traversal primitives, such as
* hlist_for_each_rcu(), used to prevent memory-consistency
* hlist_for_each_entry_rcu(), used to prevent memory-consistency
* problems on Alpha CPUs.
*/
static inline void hlist_add_after_rcu(struct hlist_node *prev,
@@ -699,11 +699,6 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev,
for (pos = (head)->first; pos && ({ n = pos->next; 1; }); \
pos = n)
#define hlist_for_each_rcu(pos, head) \
for ((pos) = (head)->first; \
rcu_dereference((pos)) && ({ prefetch((pos)->next); 1; }); \
(pos) = (pos)->next)
/**
* hlist_for_each_entry - iterate over list of given type
* @tpos: the type * to use as a loop counter.
@@ -756,7 +751,7 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev,
/**
* hlist_for_each_entry_rcu - iterate over rcu list of given type
* @pos: the type * to use as a loop counter.
* @tpos: the type * to use as a loop counter.
* @pos: the &struct hlist_node to use as a loop counter.
* @head: the head for your list.
* @member: the name of the hlist_node within the struct.