linux-kernel - [PATCH 2/2] maple_tree: Add some alloc node test case

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Date: Wed, 26 Jun 2024 12:06:31 -0400
From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
To: linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>
Cc: Jiazi Li <jqqlijiazi@...il.com>, linux-kernel@...r.kernel.org,
        maple-tree@...ts.infradead.org,
        "Liam R . Howlett" <Liam.Howlett@...cle.com>
Subject: [PATCH 2/2] maple_tree: Add some alloc node test case

From: Jiazi Li <jqqlijiazi@...il.com>

Add some maple_tree alloc node tese case.

Suggested-by: Liam R. Howlett <Liam.Howlett@...cle.com>
Signed-off-by: Jiazi Li <jqqlijiazi@...il.com>
Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---
 tools/testing/radix-tree/maple.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/tools/testing/radix-tree/maple.c b/tools/testing/radix-tree/maple.c
index 11f1efdf83f9..b4b5fd9f294d 100644
--- a/tools/testing/radix-tree/maple.c
+++ b/tools/testing/radix-tree/maple.c
@@ -462,6 +462,28 @@ static noinline void __init check_new_node(struct maple_tree *mt)
 	MT_BUG_ON(mt, mas_allocated(&mas) != 10 + MAPLE_ALLOC_SLOTS - 1);
 	mas_destroy(&mas);
 
+	mas.node = MA_ERROR(-ENOMEM);
+	mas_node_count(&mas, MAPLE_ALLOC_SLOTS + 1); /* Request */
+	mas_nomem(&mas, GFP_KERNEL); /* Fill request */
+	MT_BUG_ON(mt, mas_allocated(&mas) != MAPLE_ALLOC_SLOTS + 1);
+	mas.node = MA_ERROR(-ENOMEM);
+	mas_node_count(&mas, MAPLE_ALLOC_SLOTS * 2 + 2); /* Request */
+	mas_nomem(&mas, GFP_KERNEL); /* Fill request */
+	mas.status = ma_start;
+	MT_BUG_ON(mt, mas_allocated(&mas) != MAPLE_ALLOC_SLOTS * 2 + 2);
+	mas_destroy(&mas);
+
+	mas.node = MA_ERROR(-ENOMEM);
+	mas_node_count(&mas, MAPLE_ALLOC_SLOTS * 2 + 1); /* Request */
+	mas_nomem(&mas, GFP_KERNEL); /* Fill request */
+	MT_BUG_ON(mt, mas_allocated(&mas) != MAPLE_ALLOC_SLOTS * 2 + 1);
+	mas.node = MA_ERROR(-ENOMEM);
+	mas_node_count(&mas, MAPLE_ALLOC_SLOTS * 3 + 2); /* Request */
+	mas_nomem(&mas, GFP_KERNEL); /* Fill request */
+	mas.status = ma_start;
+	MT_BUG_ON(mt, mas_allocated(&mas) != MAPLE_ALLOC_SLOTS * 3 + 2);
+	mas_destroy(&mas);
+
 	mtree_unlock(mt);
 }
 
-- 
2.43.0