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Subject[PATCH v2 2/2] test_maple_tree: Add test for mas_spanning_rebalance() on insufficient data
Date
Add a test to the maple tree test suite for the spanning rebalance
insufficient node issue does not go undetected again.

Cc: Andrei Vagin <avagin@gmail.com>
Cc: usama.anjum@collabora.com
CC: stable@vger.kernel.org
Cc: Mike Rapoport <rppt@kernel.org>
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
---
lib/test_maple_tree.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/lib/test_maple_tree.c b/lib/test_maple_tree.c
index f425f169ef08..497fc93ccf9e 100644
--- a/lib/test_maple_tree.c
+++ b/lib/test_maple_tree.c
@@ -2498,6 +2498,25 @@ static noinline void check_dup(struct maple_tree *mt)
}
}

+static noinline void check_bnode_min_spanning(struct maple_tree *mt)
+{
+ int i = 50;
+ MA_STATE(mas, mt, 0, 0);
+
+ mt_set_non_kernel(9999);
+ mas_lock(&mas);
+ do {
+ mas_set_range(&mas, i*10, i*10+9);
+ mas_store(&mas, check_bnode_min_spanning);
+ } while (i--);
+
+ mas_set_range(&mas, 240, 509);
+ mas_store(&mas, NULL);
+ mas_unlock(&mas);
+ mas_destroy(&mas);
+ mt_set_non_kernel(0);
+}
+
static DEFINE_MTREE(tree);
static int maple_tree_seed(void)
{
@@ -2742,6 +2761,10 @@ static int maple_tree_seed(void)
check_dup(&tree);
mtree_destroy(&tree);

+ mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
+ check_bnode_min_spanning(&tree);
+ mtree_destroy(&tree);
+
#if defined(BENCH)
skip:
#endif
--
2.35.1
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