[RFC PATCH v3 02/31] rbtree: add rbtree_postorder_for_each_entry_safe() helper.
From: Cody P Schafer
Date: Thu May 02 2013 - 20:03:14 EST
Signed-off-by: Cody P Schafer <cody@xxxxxxxxxxxxxxxxxx>
---
include/linux/rbtree.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h
index 2879e96..1b239ca 100644
--- a/include/linux/rbtree.h
+++ b/include/linux/rbtree.h
@@ -85,4 +85,12 @@ static inline void rb_link_node(struct rb_node * node, struct rb_node * parent,
*rb_link = node;
}
+#define rbtree_postorder_for_each_entry_safe(pos, n, root, field) \
+ for (pos = rb_entry(rb_first_postorder(root), typeof(*pos), field),\
+ n = rb_entry(rb_next_postorder(&pos->field), \
+ typeof(*pos), field); \
+ &pos->field; \
+ pos = n, \
+ n = rb_entry(rb_next_postorder(&pos->field), typeof(*pos), field))
+
#endif /* _LINUX_RBTREE_H */
--
1.8.2.2
--
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