linux-kernel - [PATCH Fix 2/2] test_maple_tree: Add test for spanning store to most of the tree

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Date:   Wed, 29 Jun 2022 15:23:51 +0000
From:   Liam Howlett <liam.howlett@...cle.com>
To:     "maple-tree@...ts.infradead.org" <maple-tree@...ts.infradead.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
CC:     Yu Zhao <yuzhao@...gle.com>
Subject: [PATCH Fix 2/2] test_maple_tree: Add test for spanning store to most
 of the tree

Test spanning almost the entire tree to detect if the root is dead and
the node is placed in the wrong location.

Fixes: 1d3ae73e4e86 (test_maple_tree: Add test for spanning store to most of the tree)
Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---
 lib/test_maple_tree.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/test_maple_tree.c b/lib/test_maple_tree.c
index 8de5705b7b9b..b028f5648857 100644
--- a/lib/test_maple_tree.c
+++ b/lib/test_maple_tree.c
@@ -35685,7 +35685,6 @@ static noinline void check_spanning_write(struct maple_tree *mt)
 	mas_set(&mas, 1205);
 	MT_BUG_ON(mt, mas_walk(&mas) != NULL);
 	mtree_unlock(mt);
-	mt_dump(mt);
 	mt_validate(mt);
 	mtree_destroy(mt);
 
@@ -35817,6 +35816,15 @@ static noinline void check_spanning_write(struct maple_tree *mt)
 	MT_BUG_ON(mt, mas_walk(&mas) != NULL);
 	mtree_unlock(mt);
 	mtree_destroy(mt);
+
+	mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE);
+	for (i = 0; i <= 100; i++)
+		mtree_test_store_range(mt, i * 10, i * 10 + 5, &i);
+
+	mtree_lock(mt);
+	mas_set_range(&mas, 76, 875);
+	mas_store_gfp(&mas, NULL, GFP_KERNEL);
+	mtree_unlock(mt);
 }
 
 static noinline void check_null_expand(struct maple_tree *mt)
-- 
2.35.1