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authorPavel Emelyanov <xemul@openvz.org>2007-09-19 00:20:41 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-11 03:51:35 +0400
commit768f3591e2b1cc309fd6f10d6579b216026d7817 (patch)
tree0328abd6a6a306e648120ac2ef20332954e852e0 /include/linux/list.h
parent1a348ccc1047a00507e554826775a3d81f7f3437 (diff)
downloadlinux-768f3591e2b1cc309fd6f10d6579b216026d7817.tar.xz
[NETNS]: Cleanup list walking in setup_net and cleanup_net
I proposed introducing a list_for_each_entry_continue_reverse macro to be used in setup_net() when unrolling the failed ->init callback. Here is the macro and some more cleanup in the setup_net() itself to remove one variable from the stack :) The same thing is for the cleanup_net() - the existing list_for_each_entry_reverse() is used. Minor, but the code looks nicer. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/list.h')
-rw-r--r--include/linux/list.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/list.h b/include/linux/list.h
index f29fc9c1a964..ad9dcb9e3375 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -525,6 +525,20 @@ static inline void list_splice_init_rcu(struct list_head *list,
pos = list_entry(pos->member.next, typeof(*pos), member))
/**
+ * list_for_each_entry_continue_reverse - iterate backwards from the given point
+ * @pos: the type * to use as a loop cursor.
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ *
+ * Start to iterate over list of given type backwards, continuing after
+ * the current position.
+ */
+#define list_for_each_entry_continue_reverse(pos, head, member) \
+ for (pos = list_entry(pos->member.prev, typeof(*pos), member); \
+ prefetch(pos->member.prev), &pos->member != (head); \
+ pos = list_entry(pos->member.prev, typeof(*pos), member))
+
+/**
* list_for_each_entry_from - iterate over list of given type from the current point
* @pos: the type * to use as a loop cursor.
* @head: the head for your list.