radix tree test suite: handle exceptional entries

item_kill_tree() assumes that everything in the tree is a pointer to a
struct item, which is annoying when testing the behaviour of exceptional
entries.  Fix it to delete exceptional entries on the assumption they
don't need to be freed.

Link: http://lkml.kernel.org/r/1480369871-5271-45-git-send-email-mawilcox@linuxonhyperv.com
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/tools/testing/radix-tree/test.c b/tools/testing/radix-tree/test.c
index a6e8099eaf4f27e6f58c67565fa2344578831043..6f8dafc797ce84e8988abed16aba785d938be95c 100644 (file)
--- a/tools/testing/radix-tree/test.c
+++ b/tools/testing/radix-tree/test.c
@@ -200,9 +200,16 @@ void verify_tag_consistency(struct radix_tree_root *root, unsigned int tag)
 
 void item_kill_tree(struct radix_tree_root *root)
 {
+       struct radix_tree_iter iter;
+       void **slot;
        struct item *items[32];
        int nfound;
 
+       radix_tree_for_each_slot(slot, root, &iter, 0) {
+               if (radix_tree_exceptional_entry(*slot))
+                       radix_tree_delete(root, iter.index);
+       }
+
        while ((nfound = radix_tree_gang_lookup(root, (void **)items, 0, 32))) {
                int i;