radix tree test suite: Fix split/join memory leaks
The last of the memory leaks in the test suite was a couple of places in
the split/join testing where I forgot to free the element being removed
from the tree.
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
diff --git a/tools/testing/radix-tree/multiorder.c b/tools/testing/radix-tree/multiorder.c
index 72d80f7..06c7117 100644
--- a/tools/testing/radix-tree/multiorder.c
+++ b/tools/testing/radix-tree/multiorder.c
@@ -356,6 +356,10 @@ void multiorder_tagged_iteration(void)
item_kill_tree(&tree);
}
+/*
+ * Basic join checks: make sure we can't find an entry in the tree after
+ * a larger entry has replaced it
+ */
static void multiorder_join1(unsigned long index,
unsigned order1, unsigned order2)
{
@@ -374,6 +378,10 @@ static void multiorder_join1(unsigned long index,
item_kill_tree(&tree);
}
+/*
+ * Check that the accounting of exceptional entries is handled correctly
+ * by joining an exceptional entry to a normal pointer.
+ */
static void multiorder_join2(unsigned order1, unsigned order2)
{
RADIX_TREE(tree, GFP_KERNEL);
@@ -387,6 +395,9 @@ static void multiorder_join2(unsigned order1, unsigned order2)
assert(item2 == (void *)0x12UL);
assert(node->exceptional == 1);
+ item2 = radix_tree_lookup(&tree, 0);
+ free(item2);
+
radix_tree_join(&tree, 0, order1, item1);
item2 = __radix_tree_lookup(&tree, 1 << order2, &node, NULL);
assert(item2 == item1);
@@ -472,6 +483,7 @@ static void __multiorder_split(int old_order, int new_order)
void **slot;
struct radix_tree_iter iter;
unsigned alloc;
+ struct item *item;
radix_tree_preload(GFP_KERNEL);
assert(item_insert_order(&tree, 0, old_order) == 0);
@@ -480,7 +492,7 @@ static void __multiorder_split(int old_order, int new_order)
/* Wipe out the preloaded cache or it'll confuse check_mem() */
radix_tree_cpu_dead(0);
- radix_tree_tag_set(&tree, 0, 2);
+ item = radix_tree_tag_set(&tree, 0, 2);
radix_tree_split_preload(old_order, new_order, GFP_KERNEL);
alloc = nr_allocated;
@@ -493,6 +505,7 @@ static void __multiorder_split(int old_order, int new_order)
radix_tree_preload_end();
item_kill_tree(&tree);
+ free(item);
}
static void __multiorder_split2(int old_order, int new_order)