rbtree/test: test rbtree_postorder_for_each_entry_safe()

Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/rbtree_test.c b/lib/rbtree_test.c
index df6c125ff5c2..8b3c9dc88262 100644
--- a/lib/rbtree_test.c
+++ b/lib/rbtree_test.c
@@ -114,6 +114,16 @@ static int black_path_count(struct rb_node *rb)
         return count;
 }
 
+static void check_postorder_foreach(int nr_nodes)
+{
+        struct test_node *cur, *n;
+        int count = 0;
+        rbtree_postorder_for_each_entry_safe(cur, n, &root, rb)
+                count++;
+
+        WARN_ON_ONCE(count != nr_nodes);
+}
+
 static void check_postorder(int nr_nodes)
 {
         struct rb_node *rb;
@@ -148,6 +158,7 @@ static void check(int nr_nodes)
         WARN_ON_ONCE(count < (1 << black_path_count(rb_last(&root))) - 1);
 
         check_postorder(nr_nodes);
+        check_postorder_foreach(nr_nodes);
 }
 
 static void check_augmented(int nr_nodes)