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    Subject[RFC PATCH v2 02/25] rbtree: add rbtree_postorder_for_each_entry_safe() helper.
    Date
    Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
    ---
    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 */
    --
    1.8.2.1


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